update German language-files

Merge pull request #795 from Kellermorph/fix-templates-qt6
Fix crash when expanding templates/macros tree (Qt6 regression)
2026-09-26 03:44:14 +02:00 · 2026-08-27 20:12:23 +02:00 · 2026-08-27 08:14:36 +02:00 · 2026-08-27 08:12:43 +02:00 · 2026-08-27 07:27:25 +02:00 · 2026-08-27 07:16:52 +02:00
216 changed files with 44744 additions and 33995 deletions
@@ -2,7 +2,7 @@ name: Windows Build

 on:
  schedule:
-    - cron: '0 2 * * 1'   # Every Monday at 2:00 UTC
+    - cron: '0 2 1 * *' #
  workflow_dispatch:       # Manual trigger available at any time

 concurrency:
@@ -113,10 +113,10 @@ jobs:
            -DQt5_DIR=/ucrt64/lib/cmake/Qt5 \
            -DQT_VERSION_MAJOR=5 \
            -DCMAKE_DISABLE_FIND_PACKAGE_Qt6=ON \
-            -DBUILD_TESTING=OFF \
+            -DPACKAGE_TESTS=OFF \
            -DCMAKE_POLICY_DEFAULT_CMP0077=NEW \
            -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
-            -DCMAKE_CXX_FLAGS="-DQET_EXPORT_PROJECT_DB" \
+            -DQET_EXPORT_PROJECT_DB=ON \
            -DCMAKE_C_COMPILER_LAUNCHER=/ucrt64/bin/ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=/ucrt64/bin/ccache \
            -DSQLite3_INCLUDE_DIR=/ucrt64/include \
@@ -343,21 +343,21 @@ jobs:
        with:
          name: qelectrotech-${{ steps.qet_version.outputs.base_version }}+git${{ steps.qet_version.outputs.head }}-x86-win64-readytouse
          path: dist/${{ steps.zip_portable.outputs.zip_name }}
-          retention-days: 14
+          retention-days: 40

      - name: Upload NSIS installer
        uses: actions/upload-artifact@v7
        with:
          name: qelectrotech-windows-installer
          path: dist/Installer_*.exe
-          retention-days: 14
+          retention-days: 40

      - name: Upload portable (nom fixe pour le workflow MSI)
        uses: actions/upload-artifact@v7
        with:
          name: qelectrotech-windows-portable
          path: nsis_root/files/
-          retention-days: 14
+          retention-days: 40

  # =============================================================================
  # Job 2: Qt6 build (EXPERIMENTAL track)
@@ -397,6 +397,9 @@ jobs:
            mingw-w64-ucrt-x86_64-qt6-pdf
            mingw-w64-ucrt-x86_64-sqlite3
            mingw-w64-ucrt-x86_64-pkg-config
+            mingw-w64-ucrt-x86_64-kwidgetsaddons
+            mingw-w64-ucrt-x86_64-kcoreaddons
+            mingw-w64-ucrt-x86_64-extra-cmake-modules
            mingw-w64-ucrt-x86_64-nsis
            mingw-w64-ucrt-x86_64-angleproject

@@ -456,11 +459,12 @@ jobs:
            -DCMAKE_PREFIX_PATH=/ucrt64 \
            -DQt6_DIR=/ucrt64/lib/cmake/Qt6 \
            -DQT_VERSION_MAJOR=6 \
-            -DBUILD_WITH_KF5=OFF \
+            -DBUILD_WITH_KF=ON \
+            -DBUILD_KF=OFF \
            -DPACKAGE_TESTS=OFF \
            -DCMAKE_POLICY_DEFAULT_CMP0077=NEW \
            -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
-            -DCMAKE_CXX_FLAGS="-DQET_EXPORT_PROJECT_DB" \
+            -DQET_EXPORT_PROJECT_DB=ON \
            -DCMAKE_C_COMPILER_LAUNCHER=/ucrt64/bin/ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=/ucrt64/bin/ccache \
            -DSQLite3_INCLUDE_DIR=/ucrt64/include \
@@ -687,21 +691,21 @@ jobs:
        with:
          name: qelectrotech-${{ steps.qet_version.outputs.base_version }}+git${{ steps.qet_version.outputs.head }}-x86-win64-readytouse
          path: dist/${{ steps.zip_portable.outputs.zip_name }}
-          retention-days: 14
+          retention-days: 40

      - name: Upload NSIS installer
        uses: actions/upload-artifact@v7
        with:
          name: qelectrotech-windows-installer-qt6
          path: dist/Installer_*.exe
-          retention-days: 14
+          retention-days: 40

      - name: Upload portable (nom fixe pour le workflow MSI)
        uses: actions/upload-artifact@v7
        with:
          name: qelectrotech-windows-portable-qt6
          path: nsis_root/files/
-          retention-days: 14
+          retention-days: 40

  # ---------------------------------------------------------------------------
  # Job 3 : Publie les assets nightly (exe + zip, Qt5 et Qt6) sur la release
@@ -759,8 +763,9 @@ jobs:
            > ⚠️ This is a development version; it introduces new features you want, but may cause bugs that have not yet been identified yet.
            > For stable releases, see the [Releases page](https://github.com/${{ github.repository }}/releases).

-            > 🧪 **Qt6 builds are experimental.** Files tagged `-qt6-` are built against Qt6 and are not yet
-            > as tested as the Qt5 track. Expect rough edges; report issues clearly labelled "Qt6".
+            > 🧪 **Try Qt6 — soon the only track.** Files tagged `-qt6-` are built against Qt6. The Qt5
+            > builds above will be removed from Windows CI soon; please switch and test Qt6 now — report
+            > any issue clearly labelled "Qt6".
          prerelease: true
          make_latest: false
          files: |
@@ -35,7 +35,7 @@ jobs:
          - flavor: qt6
            portable_artifact: qelectrotech-windows-portable-qt6
            version_source: hardcoded    # see note in "Extract version" step
-            label_suffix: "-qt6-EXPERIMENTAL"
+            label_suffix: "-qt6"
            experimental: true

    permissions:
@@ -311,7 +311,7 @@ jobs:
        with:
          name: qelectrotech-windows-msi-${{ matrix.flavor }}
          path: dist\*.msi
-          retention-days: 14
+          retention-days: 40
          if-no-files-found: error

      - name: Delete old nightly .msi asset for this flavor
@@ -319,10 +319,10 @@ jobs:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REPO: ${{ github.repository }}
        run: |
-          $pattern = if ("${{ matrix.flavor }}" -eq "qt6") { "-qt6-EXPERIMENTAL.*\\.msi$" } else { "\\.msi$" }
+          $pattern = if ("${{ matrix.flavor }}" -eq "qt6") { "-qt6.*\\.msi$" } else { "\\.msi$" }
          $names = gh release view nightly --repo $env:REPO --json assets --jq ".assets[] | select(.name | test(`"$pattern`")) | .name"
          foreach ($name in ($names -split "`n" | Where-Object { $_ })) {
-            if ("${{ matrix.flavor }}" -eq "qt5" -and $name -match "-qt6-EXPERIMENTAL") { continue }
+            if ("${{ matrix.flavor }}" -eq "qt5" -and $name -match "-qt6") { continue }
            Write-Host "Deleting old asset: $name"
            gh release delete-asset nightly $name --repo $env:REPO --yes
          }
@@ -48,19 +48,11 @@ endif()
 # INTERFACE_QT_MAJOR_VERSION mismatch at generate time.
 set(QT_DEFAULT_MAJOR_VERSION ${QT_VERSION_MAJOR} CACHE STRING "Qt version to use (5 or 6)" FORCE)

-# Add sub directories
-option(PACKAGE_TESTS "Build the tests" ON)
-if(PACKAGE_TESTS)
-    message("Add sub directory tests")
-    add_subdirectory(tests)
-endif()
-
 include(cmake/paths_compilation_installation.cmake)
 include(cmake/start_options.cmake)
 include(cmake/developer_options.cmake)
 include(cmake/git_update_submodules.cmake)
 include(cmake/git_last_commit_sha.cmake)
-include(cmake/fetch_kdeaddons.cmake)
 include(cmake/fetch_singleapplication.cmake)
 include(cmake/fetch_pugixml.cmake)
 include(cmake/qet_compilation_vars.cmake)
@@ -78,12 +70,43 @@ find_package(
    ${QET_COMPONENTS}
    REQUIRED)

-# Qt6 only creates the Qt::GuiPrivate target (used for QPdfEngine::drawHyperlink)
-# when the GuiPrivate component is explicitly requested. Qt5 has no such
-# component package and creates the target implicitly with Gui, so only
-# request it on Qt6 - requesting it on Qt5 fails the whole configure.
+# <private/qpdf_p.h> (QPdfEngine::drawHyperlink) needs Qt's private GUI module.
+# Qt >= 6.7 ships it as a proper find_package component, but some distro
+# packages (e.g. Ubuntu's qt6-base-private-dev) omit Qt6GuiPrivateConfig.cmake
+# and only provide the implicit Qt6::GuiPrivate target created alongside
+# Qt6::Gui. Try the component quietly, then verify the target below so a
+# missing private-headers package fails here instead of at compile time.
+# Qt5 has no such component as its GuiPrivate target always exists once Gui is found.
 if(QT_VERSION_MAJOR GREATER_EQUAL 6)
-    find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS GuiPrivate)
+    find_package(Qt6 QUIET COMPONENTS GuiPrivate)
+endif()
+
+if(QT_VERSION_MAJOR GREATER_EQUAL 6 AND NOT TARGET Qt6::GuiPrivate)
+    message(FATAL_ERROR
+        "Qt6::GuiPrivate was not found. It is required for PDF hyperlink "
+        "support (<private/qpdf_p.h>). Install the Qt6 private headers "
+        "(e.g. 'qt6-base-private-dev' on Debian/Ubuntu) or use a Qt build "
+        "that provides the GuiPrivate component.")
+endif()
+
+# PDF page import (toolbar "Ajouter un PDF") needs the QtPdf module and,
+# specifically, QPdfDocument::pagePointSize() which only exists since Qt 6.4.
+# Unlike GuiPrivate above, a missing QtPdf module is NOT fatal here: some
+# Qt6 distributions (e.g. the Flatpak org.kde.Platform runtime) don't ship
+# it at all, since it lives in the qtwebengine source tree rather than Qt6
+# core. When it's missing, or too old, the feature is silently disabled -
+# see the QT_VERSION_CHECK / QET_HAS_QTPDF guards in diagrameventaddpdf.*
+# and pdfpagesdialog.*.
+set(QET_HAS_QTPDF FALSE)
+if(QT_VERSION_MAJOR GREATER_EQUAL 6)
+    find_package(Qt6 QUIET COMPONENTS Pdf)
+    if(TARGET Qt6::Pdf AND NOT Qt6_VERSION VERSION_LESS 6.4.0)
+        set(QET_HAS_QTPDF TRUE)
+        list(APPEND QET_PRIVATE_LIBRARIES Qt::Pdf)
+        add_compile_definitions(QET_HAS_QTPDF)
+    else()
+        message(STATUS "QtPdf module not available (or Qt < 6.4): PDF page import feature disabled")
+    endif()
 endif()

 find_package(SQLite3 REQUIRED)
@@ -100,25 +123,19 @@ endif()

 set(CMAKE_AUTOUIC_SEARCH_PATHS ${QET_DIR}/sources/ui)

-# The default build only compiles the tracked .ts files to .qm (lrelease).
-# Refreshing the .ts from the sources (lupdate) is a developer action behind
-# the explicit "update_translations" target below: running lupdate on every
-# build rewrote tracked files as a side effect, and under high parallelism
-# lupdate rewriting a .ts while lrelease read the same file made the build
-# fail with "Premature end of document".
-set_source_files_properties(${TS_FILES} PROPERTIES OUTPUT_LOCATION "${QET_DIR}/lang")
 if(QT_VERSION_MAJOR EQUAL 6)
-    qt6_add_translation(QM_FILES ${TS_FILES})
+    set(KF_MAJOR_VERSION 6)
 else()
-    qt5_add_translation(QM_FILES ${TS_FILES})
+    set(KF_MAJOR_VERSION 5)
 endif()
+include(cmake/fetch_kdeaddons.cmake)

-add_custom_target(update_translations
-    COMMAND $<TARGET_FILE:Qt${QT_VERSION_MAJOR}::lupdate> ${CMAKE_SOURCE_DIR}/sources -ts ${TS_FILES}
-    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-    COMMENT "Updating .ts files from sources/ (lupdate) - developer target, run explicitly"
-    VERBATIM
-)
+# Add sub directories
+option(PACKAGE_TESTS "Build the tests" ON)
+if(PACKAGE_TESTS)
+    message("Add sub directory tests")
+    add_subdirectory(tests)
+endif()

 # als laatse
 include(cmake/define_definitions.cmake)
@@ -145,6 +162,90 @@ else()
    )
 endif()

+# The default build only compiles the tracked .ts files to .qm (lrelease).
+# Refreshing the .ts from the sources (lupdate) is a developer action behind
+# the explicit "update_translations" target below: running lupdate on every
+# build rewrote tracked files as a side effect, and under high parallelism
+# lupdate rewriting a .ts while lrelease read the same file made the build
+# fail with "Premature end of document".
+set_source_files_properties(
+    ${TS_FILES}
+    PROPERTIES OUTPUT_LOCATION "${QET_DIR}/lang"
+)
+if(QT_VERSION_MAJOR EQUAL 6)
+    if(Qt6_VERSION VERSION_LESS "6.2")
+        # Qt 6.0–6.1
+        qt6_add_translation(QM_FILES ${TS_FILES})
+
+        # qt6_add_translation() only creates custom commands. Something must
+        # depend on their outputs for them to run during the default build.
+        add_custom_target(${PROJECT_NAME}_lrelease ALL
+            DEPENDS ${QM_FILES}
+        )
+
+        add_custom_target(update_translations
+            COMMAND
+                $<TARGET_FILE:Qt6::lupdate>
+                "${CMAKE_SOURCE_DIR}/sources"
+                -ts ${TS_FILES}
+            WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+            COMMENT
+                "Updating .ts files from sources/ (lupdate) - developer target"
+            VERBATIM
+        )
+
+    elseif(Qt6_VERSION VERSION_LESS "6.7")
+        # Qt 6.2–6.6: old target-based signature
+        qt_add_lrelease(
+            ${PROJECT_NAME}
+            TS_FILES ${TS_FILES}
+            QM_FILES_OUTPUT_VARIABLE QM_FILES
+        )
+
+        # Automatically creates the update_translations umbrella target.
+        qt_add_lupdate(
+            ${PROJECT_NAME}
+            TS_FILES ${TS_FILES}
+        )
+
+    else()
+        # Qt 6.7+: new signature
+        qt_add_lrelease(
+            TS_FILES ${TS_FILES}
+            LRELEASE_TARGET ${PROJECT_NAME}_lrelease
+            QM_FILES_OUTPUT_VARIABLE QM_FILES
+        )
+
+        qt_add_lupdate(
+            SOURCE_TARGETS ${PROJECT_NAME}
+            TS_FILES ${TS_FILES}
+            LUPDATE_TARGET update_translations
+            NO_GLOBAL_TARGET
+        )
+    endif()
+
+else()
+    # Qt 5
+    qt5_add_translation(QM_FILES ${TS_FILES})
+
+    # Likewise, qt5_add_translation() needs a target depending on its outputs,
+    # unless QM_FILES are already consumed elsewhere.
+    add_custom_target(${PROJECT_NAME}_lrelease ALL
+        DEPENDS ${QM_FILES}
+    )
+
+    add_custom_target(update_translations
+        COMMAND
+            $<TARGET_FILE:Qt5::lupdate>
+            "${CMAKE_SOURCE_DIR}/sources"
+            -ts ${TS_FILES}
+        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+        COMMENT
+            "Updating .ts files from sources/ (lupdate) - developer target"
+        VERBATIM
+    )
+endif()
+
 # Optional precompiled headers -- see QET_ENABLE_PCH in
 # cmake/developer_options.cmake for what this trades away.
 #
@@ -180,7 +281,7 @@ target_link_libraries(
    pugixml::pugixml
    SingleApplication::SingleApplication
    SQLite3::SQLite3
-    ${KF5_PRIVATE_LIBRARIES}
+    ${KF_PRIVATE_LIBRARIES}
    ${QET_PRIVATE_LIBRARIES}
 )

@@ -221,7 +322,7 @@ target_include_directories(
    ${QET_DIR}/sources/svg
 )

-if(NOT BUILD_WITH_KF5)
+if(NOT BUILD_WITH_KF)
    target_include_directories(
        ${PROJECT_NAME}
        PRIVATE
@@ -1,7 +1,7 @@
 {
  "id": "org.qelectrotech.QElectroTech",
  "runtime": "org.kde.Platform",
-  "runtime-version": "5.15-25.08",
+  "runtime-version": "6.11",
  "sdk": "org.kde.Sdk",
  "command": "qelectrotech",
  "rename-desktop-file": "org.qelectrotech.qelectrotech.desktop",
@@ -30,7 +30,20 @@
    "pypi-dependencies.json",
    {
      "name": "qelectrotech",
-      "buildsystem": "qmake",
+      "//qt6-private-headers-note": "qt6-base-private-dev has no Flatpak build-depends equivalent — private Qt6 headers ship inside org.kde.Sdk itself. If the cmake build fails looking for QtCore/private/*.h, the SDK/runtime branch is mismatched with the source tree, not a missing package.",
+      "//sqlite-driver-note": "libqt6sql6-sqlite / libsqlite3-dev have no Flatpak build-depends equivalent either. QET_EXPORT_PROJECT_DB=ON assumes the KDE runtime ships the Qt6 SQLite plugin (libqsqlite.so) already built into QtSql — verified at Debian packaging time this needed an explicit runtime dep there (see debian/control). Test the in-app database export after building; if it silently fails, the runtime's QtSql plugin set needs checking, not a package to add here.",
+      "buildsystem": "cmake",
+      "config-opts": [
+        "-DCMAKE_INSTALL_PREFIX=/app",
+        "-DQT_VERSION_MAJOR=6",
+        "-DBUILD_WITH_KF=ON",
+        "-DBUILD_KF=OFF",
+        "-DPACKAGE_TESTS=OFF",
+        "-DBUILD_PUGIXML=ON",
+        "-DFETCHCONTENT_FULLY_DISCONNECTED=ON",
+        "-DFETCHCONTENT_SOURCE_DIR_PUGIXML=/run/build/qelectrotech/pugixml",
+        "-DQET_EXPORT_PROJECT_DB=ON"
+      ],
      "post-install": [
        "mv ${FLATPAK_DEST}/share/mime/packages/qelectrotech.xml ${FLATPAK_DEST}/share/mime/packages/org.qelectrotech.QElectroTech.xml"
      ],
@@ -38,12 +51,6 @@
        {
          "type": "dir",
          "path": "../.."
-        },
-        {
-          "type": "patch",
-          "paths": [
-            "patches/fix-the-installation-paths.patch"
-          ]
        }
      ]
    }
@@ -5,7 +5,7 @@ Called from windows-msi.yml deploy-pages job.
 Environment variables required:
  DATE, SHORT, REPO, SHA, RUN_URL, RUN_NUMBER,
  INSTALLER_URL, PORTABLE_URL, MSI_URL (optional)
-Optional (Qt6 experimental track — omitted entirely if empty):
+Optional (Qt6 track — omitted entirely if empty):
  INSTALLER_QT6_URL, PORTABLE_QT6_URL, MSI_QT6_URL
 """
 import os
@@ -32,7 +32,7 @@ if msi_url:
 <span class="btn-text">Windows Installer .msi<small>.msi &mdash; for enterprise / GPO deployment</small></span>
 </a>"""

-# Qt6 experimental section — only rendered if at least one Qt6 asset exists.
+# Qt6 section — only rendered if at least one Qt6 asset exists.
 qt6_block = ""
 if installer_qt6_url or portable_qt6_url or msi_qt6_url:
    qt6_msi_btn = ""
@@ -40,30 +40,30 @@ if installer_qt6_url or portable_qt6_url or msi_qt6_url:
        qt6_msi_btn = f"""
 <a class="btn btn-msi" href="{msi_qt6_url}">
 <span class="btn-icon">&#11015;</span>
-<span class="btn-text">Windows Installer .msi (Qt6)<small>.msi &mdash; experimental, for enterprise / GPO deployment</small></span>
+<span class="btn-text">Windows Installer .msi (Qt6)<small>.msi &mdash; for enterprise / GPO deployment</small></span>
 </a>"""
    qt6_installer_btn = ""
    if installer_qt6_url:
        qt6_installer_btn = f"""
 <a class="btn btn-primary" href="{installer_qt6_url}">
 <span class="btn-icon">&#11015;</span>
-<span class="btn-text">Windows Installer (Qt6)<small>.exe &mdash; experimental, includes all dependencies</small></span>
+<span class="btn-text">Windows Installer (Qt6)<small>.exe &mdash; includes all dependencies</small></span>
 </a>"""
    qt6_portable_btn = ""
    if portable_qt6_url:
        qt6_portable_btn = f"""
 <a class="btn btn-secondary" href="{portable_qt6_url}">
 <span class="btn-icon">&#128230;</span>
-<span class="btn-text">Windows Portable (Qt6)<small>.zip &mdash; experimental, no installation required</small></span>
+<span class="btn-text">Windows Portable (Qt6)<small>.zip &mdash; no installation required</small></span>
 </a>"""

    qt6_block = f"""
 <div class="card">
 <h2>&#129514; Windows &mdash; x86_64 &mdash; Qt6 track</h2>
 <div class="warning">
-&#9888;&#65039; <strong>Experimental.</strong> These Qt6-based installer, portable and MSI
-builds are new and not as thoroughly tested as the Qt5 track above. Expect rough
-edges; please report issues and mention &quot;Qt6&quot; explicitly.
+&#129514; <strong>Try Qt6 &mdash; soon the only track.</strong> The Qt5 builds above
+will be removed from Windows CI soon; Qt6 is becoming the sole supported track.
+Please switch and test it now &mdash; report any issue and mention &quot;Qt6&quot; explicitly.
 </div>
 <div class="downloads">
 {qt6_installer_btn}
@@ -1,48 +1,39 @@
 name: qelectrotech
 title: QElectroTech
-base: core22
+base: core24
 adopt-info: qelectrotech
 license: GPL-2.0
 summary: Electrical diagram editor
 description: |
-  QElectroTech, or QET in short, is a libre and open source desktop application 
+  QElectroTech, or QET in short, is a libre and open source desktop application
  to create diagrams and schematics.
-
 grade: stable
 confinement: strict
 compression: lzo

-architectures:
-  - build-on: amd64
-    build-for: amd64
-  - build-on: arm64
-    build-for: arm64
-    
-layout:
-  /usr/local/share/qelectrotech:
-    symlink: $SNAP/usr/local/share/qelectrotech
-  
+platforms:
+  amd64:
+  arm64:

 apps:
  qelectrotech:
-    command: usr/local/bin/qelectrotech
+    command: usr/bin/qelectrotech
    common-id: qelectrotech.desktop
-    extensions: 
-     - kde-neon
+    extensions:
+      - kde-neon-6
    plugs: &plugs [opengl, unity7, home, removable-media, gsettings, network, cups-control, wayland, x11]
    environment: &env
      TCL_LIBRARY: $SNAP/usr/share/tcltk/tcl8.6
      HOME: $SNAP_USER_COMMON
-      PYTHONPATH: $SNAP:$SNAP/lib/python3.10/site-packages:$SNAP/usr/lib/python3.10:$SNAP/usr/lib/python3.10/lib-dynload
+      PYTHONPATH: $SNAP:$SNAP/lib/python3.12/site-packages:$SNAP/usr/lib/python3.12:$SNAP/usr/lib/python3.12/lib-dynload

  qet-tb-generator:
    command: bin/qet_tb_generator
-    extensions: 
-     - kde-neon
+    extensions:
+      - kde-neon-6
    plugs: *plugs
    environment: *env
-      
-  
+
 parts:
  launchers:
    plugin: dump
@@ -55,7 +46,7 @@ parts:
    source: https://github.com/raulroda/qet_tb_generator-plugin.git
    source-tag: v1.31
    python-packages: [PySimpleGUI]
-    stage-packages: 
+    stage-packages:
      - python3-lxml
      - python3-tk
      - libtk8.6
@@ -63,16 +54,17 @@ parts:
  kde-sdk-setup:
    plugin: nil
    build-snaps:
-      - kf5-5-110-qt-5-15-11-core22-sdk
+      - kf6-core24-sdk
+      - kde-qt6-core24-sdk
    build-packages:
      - g++
      - mesa-common-dev
      - libglvnd-dev
      - rsync
    override-build: |
-      rsync -a --ignore-existing /snap/kf5-5-110-qt-5-15-11-core22-sdk/current/ /
+      rsync -a --ignore-existing /snap/kf6-core24-sdk/current/ /
+      rsync -a --ignore-existing /snap/kde-qt6-core24-sdk/current/ /

-  
  qelectrotech:
    after: [kde-sdk-setup]
    plugin: nil
@@ -81,37 +73,48 @@ parts:
      - git
      - sqlite3
      - xdg-user-dirs
-      # libxcb-cursor0 was added as a hard dependency of the Qt5 xcb platform
-      # plugin in Qt 5.15.x.  The kf5-5-110-qt-5-15-11-core22 content snap does
-      # not bundle it, so dlopen() of libqxcb.so fails on Ubuntu 24.04 hosts
-      # with "found but could not load" (issue #373).  Staging the 22.04 build
-      # of this library satisfies the dep without changing base or Qt version.
+      # libxcb-cursor0 workaround was needed against the Qt5/KF5 core22 content
+      # snap (issue #373). Not yet re-verified against kf6-core24 — remove this
+      # if the Qt6 xcb platform plugin loads cleanly without it.
      - libxcb-cursor0
    build-packages:
      - git
+      - cmake
+      - ninja-build
      - libsqlite3-dev
+      - qt6-tools-dev
+      - qt6-base-private-dev
+      - pkgconf
    override-build: |
      displayed_version=$(cat sources/qetversion.cpp | grep "return QVersionNumber{"| head -n 1| awk -F "{" '{ print $2 }' | awk -F "}" '{ print $1 }' | sed -e 's/,/./g' -e 's/ //g')
      snap_version="${displayed_version}-g$(git rev-parse --short=8 HEAD)"
      modified_displayed_version="${snap_version}.snap"
      sed -i -E "s|const QString displayedVersion =.*|const QString displayedVersion =\"$modified_displayed_version\";|" sources/qet.h
      craftctl set version="$snap_version"
-      qmake "$CRAFT_PART_SRC/qelectrotech.pro"
-      make -j${CRAFT_PARALLEL_BUILD_COUNT}
-      make install INSTALL_ROOT="$CRAFT_PART_INSTALL"
+      cmake -G Ninja -B build -S "$CRAFT_PART_SRC" \
+        -DCMAKE_INSTALL_PREFIX=/usr \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DQT_VERSION_MAJOR=6 \
+        -DBUILD_WITH_KF=ON \
+        -DBUILD_KF=OFF \
+        -DPACKAGE_TESTS=OFF \
+        -DBUILD_PUGIXML=ON \
+        -DQET_EXPORT_PROJECT_DB=ON
+      ninja -C build -j${CRAFT_PARALLEL_BUILD_COUNT}
+      DESTDIR="$CRAFT_PART_INSTALL" ninja -C build install
    override-stage: |
      craftctl default
      # patch desktop file with correct icon path
-      SED_CMD="sed -i -E s|^Icon=(.*)|Icon=\${SNAP}/usr/local/share/icons/hicolor/128x128/apps/\1.png|g" 
-      $SED_CMD usr/local/share/applications/org.qelectrotech.qelectrotech.desktop
+      SED_CMD="sed -i -E s|^Icon=(.*)|Icon=\${SNAP}/usr/share/icons/hicolor/128x128/apps/\1.png|g"
+      $SED_CMD usr/share/applications/org.qelectrotech.qelectrotech.desktop

  cleanup:
    after: [qelectrotech, qet-tb-generator]
    plugin: nil
-    build-snaps: [kf5-5-110-qt-5-15-11-core22]
+    build-snaps: [kf6-core24]
    override-prime: |
      set -eux
-      for snap in "kf5-5-110-qt-5-15-11-core22"; do  # List all content-snaps you're using here
+      for snap in "kf6-core24"; do # List all content-snaps you're using here
        cd "/snap/$snap/current" && find . -type f,l -exec rm -f "$CRAFT_PRIME/{}" "$CRAFT_PRIME/usr/{}" \;
      done
      for cruft in bug lintian man; do
@@ -40,8 +40,8 @@ git clone --recursive https://github.com/qelectrotech/qelectrotech-source-mirror
 Here are the technical choices made for the software development:

 *   Integrated development environment: [Qt Framework](https://www.qt.io/ide/)
-*   Libraries: Qt 5.x
-*   [KF5 Framework](https://github.com/KDE)  
+*   Libraries: Qt 5.x / Qt 6.x
+*   [KF5/6 Framework](https://github.com/KDE)  
    [Cmake](https://cmake.org/install/)   
    [kcoreaddons](https://github.com/KDE/kcoreaddons/tree/kf5)   
    [kwidgetsaddons](https://github.com/KDE/kwidgetsaddons/tree/kf5).  
@@ -62,10 +62,10 @@ message("PROJECT_SOURCE_DIR        :" ${PROJECT_SOURCE_DIR})
 message("QET_DIR                   :" ${QET_DIR})
 message("GIT_COMMIT_SHA            :" ${GIT_COMMIT_SHA})

-if(BUILD_WITH_KF5)
-  message("KF5_GIT_TAG               :" ${KF5_GIT_TAG})
+if(BUILD_WITH_KF)
+  message("KF_GIT_TAG               :" ${KF_GIT_TAG})
 else()
-  add_definitions(-DBUILD_WITHOUT_KF5)
+  add_definitions(-DBUILD_WITHOUT_KF)
 endif()
 message("QET_COMPONENTS            :" ${QET_COMPONENTS})
 message("QT_VERSION_MAJOR          :" ${QT_VERSION_MAJOR})
@@ -31,8 +31,11 @@ add_definitions(-DQT_MESSAGELOGCONTEXT)
 # In order to do so, uncomment the following line.
 #add_definitions(-DTODO_LIST)

-# Build with KF5
-option(BUILD_WITH_KF5 "Build with KF5" ON)
+# Build with KDE Frameworks. The major version (KF5/KF6) is derived
+# automatically from QT_VERSION_MAJOR -- KDE Frameworks deliberately
+# mirrors Qt's own major version numbering, so there is no independent
+# choice to make here. See cmake/fetch_kdeaddons.cmake.
+option(BUILD_WITH_KF "Build with KDE Frameworks" ON)

 # Precompiled headers for the Qt umbrella headers.
 #
@@ -16,52 +16,74 @@

 message(" - fetch_kdeaddons")

-if(BUILD_WITH_KF5)
+# TODO remove path as soon as Qt5 gets retired
+if(BUILD_WITH_KF)
  Include(FetchContent)

-  option(BUILD_KF5 "Build KF5 libraries, use system ones otherwise" YES)
+  option(BUILD_KF "Build KF libraries, use system ones otherwise" YES)

-  if(BUILD_KF5)
+  if(BUILD_KF)

-    if(NOT DEFINED KF5_GIT_TAG)
-      #https://qelectrotech.org/forum/viewtopic.php?pid=13924#p13924
-      set(KF5_GIT_TAG v5.77.0)
+    if(KF_MAJOR_VERSION EQUAL 5)
+      if(NOT DEFINED KF_GIT_TAG)
+        #https://qelectrotech.org/forum/viewtopic.php?pid=13924#p13924
+        set(KF_GIT_TAG v5.77.0)
+      endif()
+    else()
+      if(NOT DEFINED KF_GIT_TAG)
+        # this is a more or less random version, taken as an conservative approach
+        set(KF_GIT_TAG v6.10.0)
+      endif()
    endif()
+    # using a function in order to limit the scope of the variables
+    # with CMake >=3.25 we could use a block()
+    function(qet_make_kf_available)
+      # Fix stop the run autotests of kcoreaddons
+      # see
+      # https://invent.kde.org/frameworks/kcoreaddons/-/blob/master/CMakeLists.txt#L98
+      # issue:
+      # CMake Error at /usr/share/ECM/modules/ECMAddTests.cmake:89 (add_executable):
+      # Cannot find source file:
+      # see
+      # https://qelectrotech.org/forum/viewtopic.php?pid=13929#p13929
+      set(KDE_SKIP_TEST_SETTINGS ON)
+      set(BUILD_TESTING OFF)
+    
+      # QElectroTech is a plain QtWidgets application with no QML anywhere in
+      # it; these disable optional features of the fetched KF modules that
+      # would otherwise pull in extra Qt6 components (e.g. Qt6Qml) we don't
+      # have and don't need.
+      set(BUILD_DESIGNERPLUGIN OFF)
+      set(KCOREADDONS_USE_QML OFF)
+      set(BUILD_QCH OFF)
+      set(BUILD_SHARED_LIBS OFF)

-    # Fix stop the run autotests of kcoreaddons
-    # see
-    # https://invent.kde.org/frameworks/kcoreaddons/-/blob/master/CMakeLists.txt#L98
-    # issue:
-    # CMake Error at /usr/share/ECM/modules/ECMAddTests.cmake:89 (add_executable):
-    # Cannot find source file:
-    # see
-    # https://qelectrotech.org/forum/viewtopic.php?pid=13929#p13929
-    set(KDE_SKIP_TEST_SETTINGS "TRUE")
-    set(BUILD_TESTING "0")
-    FetchContent_Declare(
-      ecm
-      GIT_REPOSITORY https://invent.kde.org/frameworks/extra-cmake-modules.git
-      GIT_TAG        ${KF5_GIT_TAG})
-    FetchContent_MakeAvailable(ecm)
+      FetchContent_Declare(
+        ecm
+        GIT_REPOSITORY https://invent.kde.org/frameworks/extra-cmake-modules.git
+        GIT_TAG        ${KF_GIT_TAG})
+      FetchContent_MakeAvailable(ecm)

-    FetchContent_Declare(
-      kcoreaddons
-      GIT_REPOSITORY https://invent.kde.org/frameworks/kcoreaddons.git
-      GIT_TAG        ${KF5_GIT_TAG})
-    FetchContent_MakeAvailable(kcoreaddons)
+      FetchContent_Declare(
+        kcoreaddons
+        GIT_REPOSITORY https://invent.kde.org/frameworks/kcoreaddons.git
+        GIT_TAG        ${KF_GIT_TAG})
+      FetchContent_MakeAvailable(kcoreaddons)

-    FetchContent_Declare(
-      kwidgetsaddons
-      GIT_REPOSITORY https://invent.kde.org/frameworks/kwidgetsaddons.git
-      GIT_TAG        ${KF5_GIT_TAG})
-    FetchContent_MakeAvailable(kwidgetsaddons)
+      FetchContent_Declare(
+        kwidgetsaddons
+        GIT_REPOSITORY https://invent.kde.org/frameworks/kwidgetsaddons.git
+        GIT_TAG        ${KF_GIT_TAG})
+      FetchContent_MakeAvailable(kwidgetsaddons)
+    endfunction()
+    qet_make_kf_available()
  else()
-    find_package(KF5CoreAddons REQUIRED)
-    find_package(KF5WidgetsAddons REQUIRED)
+    find_package(KF${KF_MAJOR_VERSION}CoreAddons REQUIRED)
+    find_package(KF${KF_MAJOR_VERSION}WidgetsAddons REQUIRED)
  endif()

-  set(KF5_PRIVATE_LIBRARIES
-    KF5::WidgetsAddons
-    KF5::CoreAddons
+  set(KF_PRIVATE_LIBRARIES
+    KF${KF_MAJOR_VERSION}::WidgetsAddons
+    KF${KF_MAJOR_VERSION}::CoreAddons
    )
 endif()
@@ -23,6 +23,14 @@ set(QAPPLICATION_CLASS QApplication)

 Include(FetchContent)

+if(EXISTS "${CMAKE_SOURCE_DIR}/SingleApplication/CMakeLists.txt")
+  # Submodule deja present dans l'arbre source (clone --recursive, tarball
+  # de distro deja peuple via "git submodule update", etc.) : on l'utilise
+  # tel quel, sans acces reseau. Necessaire pour les builds hors-ligne
+  # (pbuilder/sbuild avec FETCHCONTENT_FULLY_DISCONNECTED=ON, Launchpad PPA...).
+  set(FETCHCONTENT_SOURCE_DIR_SINGLEAPPLICATION "${CMAKE_SOURCE_DIR}/SingleApplication")
+endif()
+
 FetchContent_Declare(
  SingleApplication
  GIT_REPOSITORY https://github.com/itay-grudev/SingleApplication.git
@@ -20,15 +20,15 @@ message(" - paths_compilation_installation")

 if(UNIX AND NOT APPLE)
  # for Linux, BSD, Solaris, Minix
-  set(COMPIL_PREFIX               "/usr/local/")
-  set(INSTALL_PREFIX              "/usr/local/")
+  set(COMPIL_PREFIX               "${CMAKE_INSTALL_PREFIX}/")
+  set(INSTALL_PREFIX              "${CMAKE_INSTALL_PREFIX}/")
  set(QET_BINARY_PATH             "bin/")
  set(QET_COMMON_COLLECTION_PATH  "share/qelectrotech/elements/")
  set(QET_COMMON_TBT_PATH         "share/qelectrotech/titleblocks/")
  set(QET_LANG_PATH               "share/qelectrotech/lang/")
  set(QET_EXAMPLES_PATH           "share/qelectrotech/examples/")
  set(QET_LICENSE_PATH            "doc/qelectrotech/")
-  set(QET_MIME_PACKAGE_PATH       "../share/mime/packages/")
+  set(QET_MIME_PACKAGE_PATH       "share/mime/packages/")
  set(QET_DESKTOP_PATH            "share/applications/")
  set(QET_ICONS_PATH              "share/icons/hicolor/")
  set(QET_MAN_PATH                "man/")
@@ -33,6 +33,13 @@ set(QET_COMPONENTS
  Widgets
  Concurrent)

+# Note: Pdf is intentionally NOT in this list. Some Qt6 distributions
+# (notably the Flatpak org.kde.Platform runtime) don't ship the QtPdf
+# module at all - it lives in the qtwebengine source tree, not Qt6 core.
+# Requesting it here as a REQUIRED component would fail the whole
+# configure on those setups. It is probed separately, QUIET and
+# non-fatal, right after the main find_package() call below.
+
 set(QET_PRIVATE_LIBRARIES
  Qt::PrintSupport
  Qt::Gui
@@ -45,6 +52,9 @@ set(QET_PRIVATE_LIBRARIES
  Qt::Concurrent
  )

+# Qt::Pdf is appended conditionally in CMakeLists.txt, once we know
+# whether the module was actually found (see QET_HAS_QTPDF).
+
 set(QET_RES_FILES
  ${QET_DIR}/sources/autoNum/ui/autonumberingdockwidget.ui
  ${QET_DIR}/sources/autoNum/ui/autonumberingmanagementw.ui
@@ -91,7 +101,6 @@ set(QET_RES_FILES
  ${QET_DIR}/sources/ui/configsaveloaderwidget.ui
  ${QET_DIR}/sources/ui/diagramcontextwidget.ui
  ${QET_DIR}/sources/ui/diagrameditorhandlersizewidget.ui
-  ${QET_DIR}/sources/ui/diagramselection.ui
  ${QET_DIR}/sources/ui/dialogwaiting.ui
  ${QET_DIR}/sources/ui/dynamicelementtextitemeditor.ui
  ${QET_DIR}/sources/ui/elementinfopartwidget.ui
@@ -177,6 +186,8 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/configdialog.h
  ${QET_DIR}/sources/createdxf.cpp
  ${QET_DIR}/sources/createdxf.h
+  ${QET_DIR}/sources/dxfpaintdevice.cpp
+  ${QET_DIR}/sources/dxfpaintdevice.h
  ${QET_DIR}/sources/diagramcommands.cpp
  ${QET_DIR}/sources/diagramcommands.h
  ${QET_DIR}/sources/diagramcontent.cpp
@@ -215,6 +226,8 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/exportpropertieswidget.h
  ${QET_DIR}/sources/genericpanel.cpp
  ${QET_DIR}/sources/genericpanel.h
+  ${QET_DIR}/sources/lastusedstyle.cpp
+  ${QET_DIR}/sources/lastusedstyle.h
  ${QET_DIR}/sources/machine_info.cpp
  ${QET_DIR}/sources/machine_info.h
  ${QET_DIR}/sources/main.cpp
@@ -296,6 +309,9 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/dataBase/ui/summaryquerywidget.cpp
  ${QET_DIR}/sources/dataBase/ui/summaryquerywidget.h

+  ${QET_DIR}/sources/autobreakconductor.cpp
+  ${QET_DIR}/sources/autobreakconductor.h
+
  ${QET_DIR}/sources/diagramevent/diagrameventaddelement.cpp
  ${QET_DIR}/sources/diagramevent/diagrameventaddelement.h
  ${QET_DIR}/sources/diagramevent/diagrameventaddimage.cpp
@@ -682,8 +698,6 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/ui/diagrampropertiesdialog.h
  ${QET_DIR}/sources/ui/diagrampropertieseditordockwidget.cpp
  ${QET_DIR}/sources/ui/diagrampropertieseditordockwidget.h
-  ${QET_DIR}/sources/ui/diagramselection.cpp
-  ${QET_DIR}/sources/ui/diagramselection.h
  ${QET_DIR}/sources/ui/backupdialog.cpp
  ${QET_DIR}/sources/ui/backupdialog.h
  ${QET_DIR}/sources/ui/dialogwaiting.cpp
@@ -796,7 +810,7 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/xml/terminalstriplayoutpatternxml.h
  )

-if(NOT BUILD_WITH_KF5)
+if(NOT BUILD_WITH_KF)
  list(APPEND QET_SRC_FILES
    ${QET_DIR}/sources/ui/nokde/kautosavefile.cpp
    ${QET_DIR}/sources/ui/nokde/kautosavefile.h
@@ -807,6 +821,16 @@ if(NOT BUILD_WITH_KF5)
  )
 endif()

+# Qt6-only: PDF page import files
+if(QT_VERSION_MAJOR GREATER_EQUAL 6)
+  list(APPEND QET_SRC_FILES
+    ${QET_DIR}/sources/diagramevent/diagrameventaddpdf.cpp
+    ${QET_DIR}/sources/diagramevent/diagrameventaddpdf.h
+    ${QET_DIR}/sources/ui/pdfpagesdialog.cpp
+    ${QET_DIR}/sources/ui/pdfpagesdialog.h
+  )
+endif()
+
 set(TS_FILES
  ${QET_DIR}/lang/qet_ar.ts
  ${QET_DIR}/lang/qet_ca.ts
@@ -28,5 +28,9 @@ add_definitions(-DQET_ALLOW_OVERRIDE_CD_OPTION)
 # Comment the line below to deactivate the --data-dir option
 add_definitions(-DQET_ALLOW_OVERRIDE_DD_OPTION)

-#comment the line below to disable the project database export
-#add_definitions(-DQET_EXPORT_PROJECT_DB) #error Todo
+# Enable project database export when requested by the build system.
+option(QET_EXPORT_PROJECT_DB "Enable project database export" OFF)
+
+if(QET_EXPORT_PROJECT_DB)
+    add_compile_definitions(QET_EXPORT_PROJECT_DB)
+endif()
@@ -140,6 +140,7 @@
        <file>ico/22x22/go-up.png</file>
        <file>ico/22x22/hotspot.png</file>
        <file>ico/22x22/insert-image.png</file>
+        <file>ico/22x22/pdf-import.png</file>
        <file>ico/22x22/label.png</file>
        <file>ico/22x22/landscape.png</file>
        <file>ico/22x22/line.png</file>
@@ -38,6 +38,20 @@ ElementsCollectionModel::ElementsCollectionModel(QObject *parent) :
 {
 }

+/**
+	@brief ElementsCollectionModel::~ElementsCollectionModel
+	Destructor. loadCollections() may still have background threads
+	(via QtConcurrent::map()) running setUpData() on this model's items
+	when the model is destroyed (e.g. the user cancels the dialog before
+	loading finishes). Wait for them here so QStandardItemModel's
+	destructor doesn't free items out from under them, which used to
+	crash the whole application (bugtracker #291).
+*/
+ElementsCollectionModel::~ElementsCollectionModel()
+{
+	m_future.waitForFinished();
+}
+
 /**
 	@brief ElementsCollectionModel::data
 	Reimplemented from QStandardItemModel
@@ -49,6 +63,7 @@ QVariant ElementsCollectionModel::data(const QModelIndex &index, int role) const
 {
 	if (role == Qt::DecorationRole) {
 		QStandardItem *item = itemFromIndex(index);
+		if (!item) return QStandardItemModel::data(index, role);

 		if (item->type() == FileElementCollectionItem::Type)
 			static_cast<FileElementCollectionItem*>(item)->setUpIcon();
@@ -316,7 +331,6 @@ void ElementsCollectionModel::loadMacrosCollection()
 void ElementsCollectionModel::addMacrosCollection(bool set_data)
 {
 	QString macrosPath = QETApp::userMacrosDir();
-	qDebug() << "=== MAKRO PFAD CHECK ===" << macrosPath;
 	if (macrosPath.endsWith("/")) {
 		macrosPath.remove(macrosPath.length() - 1, 1);
 	}
@@ -35,6 +35,7 @@ class ElementsCollectionModel : public QStandardItemModel

 	public:
 		ElementsCollectionModel(QObject *parent = Q_NULLPTR);
+		~ElementsCollectionModel() override;

 		QVariant data(const QModelIndex &index, int role) const override;
 		QMimeData *mimeData(const QModelIndexList &indexes) const override;
@@ -949,14 +949,7 @@ void ElementsCollectionWidget::search()
 	}

 	hideCollection(true);
-#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)	// ### Qt 6: remove
-	const QStringList text_list = text.split("+", QString::SkipEmptyParts);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.14 or later")
-#endif
 	const QStringList text_list = text.split("+", Qt::SkipEmptyParts);
-#endif
 	QModelIndexList match_index;
 	for (QString txt : text_list) {
 		match_index << m_model->match(m_showed_index.isValid()
@@ -143,11 +143,7 @@ void ElementsTreeView::startElementDrag(const ElementsLocation &location)
 								QString file_name = (last_slash != -1) ? path.mid(last_slash + 1) : path;

 								if (!dir_path.isEmpty()) {
-									#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
-									QStringList parts = dir_path.split('/', QString::SkipEmptyParts);
-									#else
 									QStringList parts = dir_path.split('/', Qt::SkipEmptyParts);
-									#endif
 									QString current_path = "";
 									for (const QString &part : parts) {
 										QString parent_path = current_path;
@@ -430,7 +430,7 @@ void FileElementCollectionItem::setUpData()
 */
 void FileElementCollectionItem::setUpIcon()
 {
-		// Must return unconditionally once an icon is set: setIcon() calls
+		// Must return unconditionally once setUpIcon has run: setIcon() calls
 		// setData(), which emits dataChanged() regardless of whether the new
 		// icon differs from the old one (QIcon has no meaningful equality).
 		// QTreeView responds to dataChanged() by recomputing the row's size
@@ -438,13 +438,18 @@ void FileElementCollectionItem::setUpIcon()
 		// guard, any repeated setIcon() here recurses until the stack
 		// overflows. Confirmed by crash report on PR #633.
 		//
+		// We use a dedicated bool instead of icon().isNull() because
+		// some items intentionally keep a null icon (e.g. .qetmak),
+		// which would bypass a null-based guard and still recurse.
+		//
 		// This item's m_qet_directory_unreadable is already final by the time
 		// this can run at all: ElementsCollectionModel only attaches itself
 		// to the tree view (making data() reachable) from loadingFinished(),
 		// which fires after the QtConcurrent::map over every item -- this one
 		// included -- has completed. So there is no race to work around here.
-	if (!icon().isNull())
+	if (m_icon_initialized)
 		return;
+	m_icon_initialized = true;

 	if (isCollectionRoot()) {
 		QString macrosPath = QETApp::userMacrosDir();
@@ -69,6 +69,7 @@ class FileElementCollectionItem : public ElementCollectionItem
 			/// rather than acted on in localName(), because setUpData() resets
 			/// the tooltip afterwards and would otherwise discard it.
 		bool m_qet_directory_unreadable = false;
+		bool m_icon_initialized = false;
 };

 #endif // FILEELEMENTCOLLECTIONITEM2_H
@@ -46,6 +46,18 @@ class PropertiesEditorDialog : public QDialog
 		PropertiesEditorDialog(T editor, QWidget *parent = nullptr) :
 		QDialog (parent)
 		{
+			// Without this, a QWidget-modal QDialog with a parent falls
+			// back to macOS's automatic sheet presentation, which some
+			// Qt/Cocoa versions render stuck centered on screen and
+			// non-draggable rather than as a proper attached sheet
+			// (bugtracker #275). Other dialogs in this codebase already
+			// opt in explicitly (see ElementDialog, DiagramPropertiesDialog)
+			// -- this one was missing it.
+			setWindowModality(Qt::WindowModal);
+#ifdef Q_OS_MACOS
+			setWindowFlags(Qt::Sheet);
+#endif
+
 			//Set dialog title
 			setWindowTitle(editor->title());
 			// Reparent the editor,
@@ -1020,6 +1020,7 @@ void SearchAndReplaceWidget::on_m_tree_widget_currentItemChanged(
 		{
 			m_highlighted_element = elmt;
 			elmt.data()->setHighlighted(true);
+			elmt.data()->ensureVisible();
 		}
 	}
 	else if (m_text_hash.contains(current))
@@ -1029,6 +1030,7 @@ void SearchAndReplaceWidget::on_m_tree_widget_currentItemChanged(
 		{
 			text.data()->setSelected(true);
 			m_last_selected = text;
+			text.data()->ensureVisible();
 		}
 	}
 	else if (m_conductor_hash.contains(current))
@@ -1038,6 +1040,7 @@ void SearchAndReplaceWidget::on_m_tree_widget_currentItemChanged(
 		{
 			cond.data()->setSelected(true);
 			m_last_selected = cond;
+			cond.data()->ensureVisible();
 		}
 	}

@@ -19,6 +19,7 @@
 #define TERMINALSTRIPDRAWER_H

 #include <QPointer>
+#include <QUuid>

 #include "properties/terminalstriplayoutpattern.h"

@@ -130,12 +130,7 @@ bool PhysicalTerminal::setLevelOf(const QSharedPointer<RealTerminal> &terminal,
 	const int i = m_real_terminal.indexOf(terminal);
 	if (i >= 0)
 	{
-#if QT_VERSION >= QT_VERSION_CHECK(5,14,0)
 		m_real_terminal.swapItemsAt(i, std::min<int>(level, static_cast<int>(m_real_terminal.size())-1));
-#else
-		auto j = std::min(level, m_real_terminal.size()-1);
-		std::swap(m_real_terminal.begin()[i], m_real_terminal.begin()[j]);
-#endif
 		return true;
 	}
 	return false;
@@ -64,11 +64,8 @@ bool TerminalStripData::fromXml(const QDomElement &xml_element)
 					"due to wrong tag name. Expected " << this->xmlTagName() << " used " << xml_element.tagName();
 		return false;
 	}
-#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+
 	m_uuid = QUuid::fromString(xml_element.attribute(QStringLiteral("uuid")));
-#else
-	m_uuid = QUuid(xml_element.attribute(QStringLiteral("uuid")));
-#endif

 	for (auto &xml_info :
 		 QETXML::findInDomElement(xml_element.firstChildElement(QStringLiteral("informations")),
@@ -28,6 +28,8 @@
 #include "../terminalstrip.h"
 #include "../../qetinformation.h"

+#include <QUuid>
+
 TerminalStripTreeDockWidget::TerminalStripTreeDockWidget(QETProject *project, QWidget *parent) :
 	QDockWidget(parent),
    ui(new Ui::TerminalStripTreeDockWidget)
@@ -35,11 +37,7 @@ TerminalStripTreeDockWidget::TerminalStripTreeDockWidget(QETProject *project, QW
 	ui->setupUi(this);
    setProject(project);

-#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
 	ui->m_tree_view->expandRecursively(ui->m_tree_view->rootIndex());
-#else
-	ui->m_tree_view->expandAll();
-#endif
 }

 TerminalStripTreeDockWidget::~TerminalStripTreeDockWidget()
@@ -93,11 +91,7 @@ void TerminalStripTreeDockWidget::reload()

 	buildTree();

-#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
 	ui->m_tree_view->expandRecursively(ui->m_tree_view->rootIndex());
-#else
-	ui->m_tree_view->expandAll();
-#endif

 		//Reselect the tree widget item of the current edited strip
   auto item = m_item_strip_H.key(current_);
@@ -20,6 +20,7 @@

 #include <QDockWidget>
 #include <QPointer>
+#include <QHash>

 class QETProject;
 class QTreeWidgetItem;
@@ -220,6 +220,24 @@ void NumerotationContext::replaceValue(int index, QString content) {
 	content_[index] = type + "|" + value + "|" + increase + "|" + initvalue + "|" + modulus + "|" + format;
 }

+/**
+	@brief NumerotationContext::replaceIncrease
+	Change how much this part advances per step, leaving its current value,
+	initial value, modulus and format untouched. Sibling to replaceValue(),
+	which deliberately never touches this field.
+	@param index of NC item
+	@param increase new increase for that item
+*/
+void NumerotationContext::replaceIncrease(int index, int increase) {
+	QStringList strl = content_[index].split("|");
+	QString type = strl.at(0);
+	QString value = strl.at(1);
+	QString initvalue = strl.at(3);
+	QString modulus = strl.size() > 4 ? strl.at(4) : QStringLiteral("0");
+	QString format  = strl.size() > 5 ? strl.at(5) : QString();
+	content_[index] = type + "|" + value + "|" + QString::number(increase) + "|" + initvalue + "|" + modulus + "|" + format;
+}
+
 /**
 	@brief NumerotationContext::formatOf
 	@param item : a context item as returned by itemAt()
@@ -230,3 +248,30 @@ QString NumerotationContext::formatOf(const QStringList &item)
 {
 	return item.size() > 5 ? item.at(5) : QString();
 }
+
+/**
+	@brief NumerotationContext::formatValue
+	@param item : a context item as returned by itemAt()
+	@return the part's value, zero-padded exactly as
+	autonum::setSequentialToList() pads it when composing a real label: an
+	explicit format mask wins, then "ten"/"hundred" parts get their
+	implicit 2/3-digit width, "alpha" is used as-is, everything else is a
+	plain number. Kept in step with that function by hand since the two
+	cannot share code without exposing an assignvariables.cpp-local helper.
+*/
+QString NumerotationContext::formatValue(const QStringList &item)
+{
+	const QString &type = item.at(0);
+	const QString &value = item.at(1);
+	if (type == QLatin1String("alpha"))
+		return value;
+
+	const QString mask = formatOf(item);
+	if (!mask.isEmpty())
+		return QString("%1").arg(value.toInt(), mask.length(), 10, QChar('0'));
+	if (type == QLatin1String("ten") || type == QLatin1String("tenfolio"))
+		return QString("%1").arg(value.toInt(), 2, 10, QChar('0'));
+	if (type == QLatin1String("hundred") || type == QLatin1String("hundredfolio"))
+		return QString("%1").arg(value.toInt(), 3, 10, QChar('0'));
+	return QString::number(value.toInt());
+}
@@ -54,6 +54,11 @@ class NumerotationContext
 	QDomElement toXml(QDomDocument &, const QString&);
 	void fromXml(QDomElement &);
 	void replaceValue(int, QString);
+	void replaceIncrease(int, int);
+		/// Zero-pad a part's value the same way the real numbering engine
+		/// does (autonum::setSequentialToList in assignvariables.cpp), so a
+		/// UI preview of a part's value matches what actually gets rendered.
+	static QString formatValue(const QStringList &item);

 	private:
 	QStringList content_;
@@ -24,10 +24,14 @@
 #include "../../titleblockproperties.h"
 #include "../../ui/projectpropertiesdialog.h"
 #include "../numerotationcontext.h"
+#include "../numerotationcontextcommands.h"
 #include "ui_autonumberingdockwidget.h"
+#include "../../undocommand/changetitleblockcommand.h"

 #include <QComboBox>
 #include <QLineEdit>
+#include <QSignalBlocker>
+#include <QSpinBox>

 /**
 	@brief AutoNumberingDockWidget::AutoNumberingDockWidget
@@ -64,6 +68,29 @@ void AutoNumberingDockWidget::clear()
 	ui->m_conductor_value_le->clear();
 	ui->m_element_value_le->clear();
 	ui->m_folio_value_le->clear();
+	ui->m_conductor_next_le->clear();
+	ui->m_element_next_le->clear();
+	ui->m_folio_next_le->clear();
+}
+
+/**
+	@brief AutoNumberingDockWidget::rowFor
+	@return the combo/value/increase/next widgets that make up category's row.
+*/
+AutoNumberingDockWidget::Row AutoNumberingDockWidget::rowFor(AutoNumCategory category) const
+{
+	switch (category) {
+		case AutoNumCategory::Conductor:
+			return {ui->m_conductor_cb, ui->m_conductor_value_le,
+				ui->m_conductor_increase_sb, ui->m_conductor_next_le};
+		case AutoNumCategory::Element:
+			return {ui->m_element_cb, ui->m_element_value_le,
+				ui->m_element_increase_sb, ui->m_element_next_le};
+		case AutoNumCategory::Folio:
+			return {ui->m_folio_cb, ui->m_folio_value_le,
+				ui->m_folio_increase_sb, ui->m_folio_next_le};
+	}
+	return {nullptr, nullptr, nullptr, nullptr};
 }

 void AutoNumberingDockWidget::projectClosed()
@@ -86,33 +113,19 @@ void AutoNumberingDockWidget::setProject(QETProject *project,
 		//Disconnect previous project
 	if (m_project && m_project_view)
 	{
-			//Conductor Signals
-		disconnect(m_project, SIGNAL(conductorAutoNumChanged()),
-			   this,SLOT(conductorAutoNumChanged()));
-		disconnect (m_project,SIGNAL(conductorAutoNumRemoved()),
-			    this,SLOT(conductorAutoNumChanged()));
-		disconnect (m_project,SIGNAL(conductorAutoNumAdded()),
-			    this,SLOT(conductorAutoNumChanged()));
-		disconnect(m_project_view,SIGNAL(diagramActivated(DiagramView*)),
-			   this,SLOT(setConductorActive(DiagramView*)));
-	
-			//Element Signals
-		disconnect (m_project,SIGNAL(elementAutoNumRemoved(QString)),
-			    this,SLOT(elementAutoNumChanged()));
-		disconnect (m_project,SIGNAL(elementAutoNumAdded(QString)),
-			    this,SLOT(elementAutoNumChanged()));
+		disconnect(m_project, &QETProject::conductorAutoNumChanged, this, &AutoNumberingDockWidget::conductorAutoNumChanged);
+		disconnect(m_project, &QETProject::conductorAutoNumRemoved, this, &AutoNumberingDockWidget::conductorAutoNumChanged);
+		disconnect(m_project, &QETProject::conductorAutoNumAdded, this, &AutoNumberingDockWidget::conductorAutoNumChanged);
+		disconnect(m_project_view, &ProjectView::diagramActivated, this, &AutoNumberingDockWidget::setConductorActive);
+
+		//Element Signals
+		disconnect(m_project, &QETProject::elementAutoNumRemoved, this, &AutoNumberingDockWidget::elementAutoNumChanged);
+		disconnect(m_project, &QETProject::elementAutoNumAdded, this, &AutoNumberingDockWidget::elementAutoNumChanged);
 	
 			//Folio Signals
-		disconnect (m_project,SIGNAL(folioAutoNumRemoved()),
-			    this,SLOT(folioAutoNumChanged()));
-		disconnect (m_project,SIGNAL(folioAutoNumAdded()),
-			    this,SLOT(folioAutoNumChanged()));
-		disconnect (this,
-			    SIGNAL(folioAutoNumChanged(QString)),
-			    &m_project_view->currentDiagram()->diagram()->border_and_titleblock,
-			    SLOT (slot_setAutoPageNum(QString)));
-		disconnect(m_project, SIGNAL(defaultTitleBlockPropertiesChanged()),
-			   this,SLOT(setActive()));
+		disconnect(m_project, &QETProject::folioAutoNumRemoved, this, qOverload<>(&AutoNumberingDockWidget::folioAutoNumChanged));
+		disconnect(m_project, &QETProject::folioAutoNumAdded, this, qOverload<>(&AutoNumberingDockWidget::folioAutoNumChanged));
+		disconnect(m_project, &QETProject::defaultTitleBlockPropertiesChanged, this, &AutoNumberingDockWidget::setActive);
 	
 			//Conductor, Element and Folio Signals
 		disconnect(m_project, &QETProject::autoNumContextUpdated,
@@ -125,33 +138,19 @@ void AutoNumberingDockWidget::setProject(QETProject *project,
 	m_project_view = projectview;
 	this->setEnabled(true);

-		//Conductor Signals
-	connect(m_project, SIGNAL(conductorAutoNumChanged()),
-		this,SLOT(conductorAutoNumChanged()));
-	connect(m_project,SIGNAL(conductorAutoNumRemoved()),
-		this,SLOT(conductorAutoNumChanged()));
-	connect(m_project,SIGNAL(conductorAutoNumAdded()),
-		this,SLOT(conductorAutoNumChanged()));
-	connect(m_project_view,SIGNAL(diagramActivated(DiagramView*)),
-		this,SLOT(setConductorActive(DiagramView*)));
+	connect(m_project, &QETProject::conductorAutoNumChanged, this, &AutoNumberingDockWidget::conductorAutoNumChanged);
+	connect(m_project, &QETProject::conductorAutoNumRemoved, this, &AutoNumberingDockWidget::conductorAutoNumChanged);
+	connect(m_project, &QETProject::conductorAutoNumAdded, this, &AutoNumberingDockWidget::conductorAutoNumChanged);
+	connect(m_project_view, &ProjectView::diagramActivated, this, &AutoNumberingDockWidget::setConductorActive);

-		//Element Signals
-	connect (m_project,SIGNAL(elementAutoNumRemoved(QString)),
-		 this,SLOT(elementAutoNumChanged()));
-	connect (m_project,SIGNAL(elementAutoNumAdded(QString)),
-		 this,SLOT(elementAutoNumChanged()));
+	//Element Signals
+	connect(m_project, &QETProject::elementAutoNumRemoved, this, &AutoNumberingDockWidget::elementAutoNumChanged);
+	connect(m_project, &QETProject::elementAutoNumAdded, this, &AutoNumberingDockWidget::elementAutoNumChanged);

 		//Folio Signals
-	connect (m_project,SIGNAL(folioAutoNumRemoved()),
-		 this,SLOT(folioAutoNumChanged()));
-	connect (m_project,SIGNAL(folioAutoNumAdded()),
-		 this,SLOT(folioAutoNumChanged()));
-	connect (this,
-		 SIGNAL(folioAutoNumChanged(QString)),
-		 &m_project_view->currentDiagram()->diagram()->border_and_titleblock,
-		 SLOT (slot_setAutoPageNum(QString)));
-	connect(m_project, SIGNAL(defaultTitleBlockPropertiesChanged()),
-		this,SLOT(setActive()));
+	connect(m_project, &QETProject::folioAutoNumRemoved, this, qOverload<>(&AutoNumberingDockWidget::folioAutoNumChanged));
+	connect(m_project, &QETProject::folioAutoNumAdded, this, qOverload<>(&AutoNumberingDockWidget::folioAutoNumChanged));
+	connect(m_project, &QETProject::defaultTitleBlockPropertiesChanged, this, &AutoNumberingDockWidget::setActive);

 		//Conductor, Element and Folio Signals
 	connect(m_project, &QETProject::autoNumContextUpdated,
@@ -201,9 +200,9 @@ void AutoNumberingDockWidget::setContext()

 		//The combo boxes have just been repopulated, so the value fields next
 		//to them are showing whatever the previous project left there.
-	refreshValueField(ui->m_conductor_cb, ui->m_conductor_value_le, AutoNumCategory::Conductor);
-	refreshValueField(ui->m_element_cb, ui->m_element_value_le, AutoNumCategory::Element);
-	refreshValueField(ui->m_folio_cb, ui->m_folio_value_le, AutoNumCategory::Folio);
+	refreshRow(AutoNumCategory::Conductor);
+	refreshRow(AutoNumCategory::Element);
+	refreshRow(AutoNumCategory::Folio);

 	this->setActive();
 }
@@ -279,7 +278,7 @@ void AutoNumberingDockWidget::on_m_conductor_cb_activated(int)
 	m_project->setCurrentConductorAutoNum(current_autonum);
 	m_project_view->currentDiagram()->diagram()->setConductorsAutonumName(current_autonum);
 	m_project_view->currentDiagram()->diagram()->loadCndFolioSeq();
-	refreshValueField(ui->m_conductor_cb, ui->m_conductor_value_le, AutoNumCategory::Conductor);
+	refreshRow(AutoNumCategory::Conductor);
 }

 /**
@@ -308,7 +307,7 @@ void AutoNumberingDockWidget::on_m_element_cb_activated(int)
 {
 	m_project->setCurrrentElementAutonum(ui->m_element_cb->currentText());
 	m_project_view->currentDiagram()->diagram()->loadElmtFolioSeq();
-	refreshValueField(ui->m_element_cb, ui->m_element_value_le, AutoNumCategory::Element);
+	refreshRow(AutoNumCategory::Element);
 }

 /**
@@ -345,8 +344,17 @@ void AutoNumberingDockWidget::on_m_folio_cb_activated(int) {
 		ip.folio = "%id/%total";
 		m_project->setDefaultTitleBlockProperties(ip);
 	}
-		emit(folioAutoNumChanged(current_autonum));
-	refreshValueField(ui->m_folio_cb, ui->m_folio_value_le, AutoNumCategory::Folio);
+
+	if (m_project_view && m_project_view->currentDiagram()) {
+		Diagram *diagram = m_project_view->currentDiagram()->diagram();
+		TitleBlockProperties old_properties = diagram->border_and_titleblock.exportTitleBlock();
+		TitleBlockProperties new_properties = old_properties;
+		new_properties.auto_page_num = ip.auto_page_num;
+		new_properties.folio = ip.folio;
+		if (new_properties != old_properties)
+			diagram->undoStack().push(new ChangeTitleBlockCommand(diagram, old_properties, new_properties));
+	}
+	refreshRow(AutoNumCategory::Folio);
 }

 void AutoNumberingDockWidget::on_m_configure_pb_clicked()
@@ -389,6 +397,21 @@ void AutoNumberingDockWidget::on_m_folio_value_le_editingFinished()
 	applyValueField(ui->m_folio_cb, ui->m_folio_value_le, AutoNumCategory::Folio);
 }

+void AutoNumberingDockWidget::on_m_conductor_increase_sb_valueChanged(int)
+{
+	applyIncreaseField(ui->m_conductor_cb, ui->m_conductor_increase_sb, AutoNumCategory::Conductor);
+}
+
+void AutoNumberingDockWidget::on_m_element_increase_sb_valueChanged(int)
+{
+	applyIncreaseField(ui->m_element_cb, ui->m_element_increase_sb, AutoNumCategory::Element);
+}
+
+void AutoNumberingDockWidget::on_m_folio_increase_sb_valueChanged(int)
+{
+	applyIncreaseField(ui->m_folio_cb, ui->m_folio_increase_sb, AutoNumCategory::Folio);
+}
+
 /**
 	@brief AutoNumberingDockWidget::contextFor
 	@return the numerotation context named by combo_box, for category
@@ -455,17 +478,21 @@ int AutoNumberingDockWidget::counterIndex(const NumerotationContext &context)
 */
 void AutoNumberingDockWidget::refreshValueFields()
 {
-		//Leave alone a field the user is typing in: numbering an element
-		//refreshes all three, and overwriting a half-typed value under the
-		//cursor is worse than showing it a moment out of date. Only this
-		//automatic path skips; an explicit refresh after a reset or an edit
-		//still writes, so the field always ends up canonical.
-	if (!ui->m_conductor_value_le->hasFocus())
-		refreshValueField(ui->m_conductor_cb, ui->m_conductor_value_le, AutoNumCategory::Conductor);
-	if (!ui->m_element_value_le->hasFocus())
-		refreshValueField(ui->m_element_cb, ui->m_element_value_le, AutoNumCategory::Element);
-	if (!ui->m_folio_value_le->hasFocus())
-		refreshValueField(ui->m_folio_cb, ui->m_folio_value_le, AutoNumCategory::Folio);
+		//Leave alone a row the user is typing in: numbering an element
+		//refreshes all three rows, and overwriting a half-typed value or
+		//increment under the cursor is worse than showing it a moment out
+		//of date. Only this automatic path skips; an explicit refresh after
+		//a reset or an edit still writes, so the row always ends up
+		//canonical. The next-value preview has no such guard: it is
+		//read-only, so there is nothing a refresh could clobber.
+	for (AutoNumCategory category : {AutoNumCategory::Conductor,
+					 AutoNumCategory::Element,
+					 AutoNumCategory::Folio})
+	{
+		const Row row = rowFor(category);
+		if (!row.value->hasFocus() && !row.increase->hasFocus())
+			refreshRow(category);
+	}
 }

 /**
@@ -507,13 +534,114 @@ void AutoNumberingDockWidget::applyValueField(QComboBox *combo_box, QLineEdit *l
 	const QString typed = line_edit->text();
 	if (typed.isEmpty() || typed == context.itemAt(index).at(1))
 	{
-		refreshValueField(combo_box, line_edit, category);
+		refreshRow(category);
 		return;
 	}

 	context.replaceValue(index, typed);
 	storeContext(combo_box, category, context);
-	refreshValueField(combo_box, line_edit, category);
+	refreshRow(category);
+}
+
+/**
+	@brief AutoNumberingDockWidget::refreshIncreaseField
+	Show the counter's current step size (bug #331: previously only
+	reachable from the full configuration dialog, via "Configurer").
+*/
+void AutoNumberingDockWidget::refreshIncreaseField(QComboBox *combo_box, QSpinBox *increase_sb, AutoNumCategory category)
+{
+		//QSpinBox::setValue() emits valueChanged() even when called
+		//programmatically. Without blocking it, this refresh would
+		//immediately re-trigger on_..._increase_sb_valueChanged() ->
+		//applyIncreaseField() -> storeContext() -> the project's
+		//autoNumContextUpdated signal -> refreshValueFields() -> back here.
+	const QSignalBlocker blocker(increase_sb);
+	if (!m_project || combo_box->currentText().isEmpty())
+	{
+		increase_sb->setEnabled(false);
+		increase_sb->setValue(increase_sb->minimum());
+		return;
+	}
+
+	const NumerotationContext context = contextFor(combo_box, category);
+	const int index = counterIndex(context);
+	increase_sb->setEnabled(index >= 0);
+	increase_sb->setValue(index >= 0 ? context.itemAt(index).at(2).toInt()
+					 : increase_sb->minimum());
+}
+
+/**
+	@brief AutoNumberingDockWidget::applyIncreaseField
+	Write the spin box's step size to the counter it displays (bug #331).
+*/
+void AutoNumberingDockWidget::applyIncreaseField(QComboBox *combo_box, QSpinBox *increase_sb, AutoNumCategory category)
+{
+	if (!m_project || combo_box->currentText().isEmpty())
+		return;
+
+	NumerotationContext context = contextFor(combo_box, category);
+	const int index = counterIndex(context);
+	if (index < 0)
+		return;
+
+	if (increase_sb->value() == context.itemAt(index).at(2).toInt())
+		return;
+
+	context.replaceIncrease(index, increase_sb->value());
+	storeContext(combo_box, category, context);
+	refreshRow(category);
+}
+
+/**
+	@brief AutoNumberingDockWidget::refreshNextField
+	Show what this counter will read after one more step (bug #331: "visualiser
+	la prochaine numérotation qui sera appliquée"). Advances a copy of the
+	whole context through NumerotationContextCommands -- the same engine the
+	Suivant button in the full configuration dialog uses to step a context --
+	so wrap-and-carry into this part from a following part, or out of it into
+	a preceding one, comes out identical to what will actually happen when the
+	number is next consumed.
+*/
+void AutoNumberingDockWidget::refreshNextField(QComboBox *combo_box, QLineEdit *next_edit, AutoNumCategory category)
+{
+	if (!m_project || combo_box->currentText().isEmpty())
+	{
+		next_edit->clear();
+		next_edit->setEnabled(false);
+		return;
+	}
+
+	const NumerotationContext context = contextFor(combo_box, category);
+	const int index = counterIndex(context);
+	if (index < 0)
+	{
+		next_edit->clear();
+		next_edit->setEnabled(false);
+		return;
+	}
+
+	Diagram *diagram = (m_project_view && m_project_view->currentDiagram())
+				    ? m_project_view->currentDiagram()->diagram()
+				    : nullptr;
+	NumerotationContextCommands ncc(context, diagram);
+	const NumerotationContext next_context = ncc.next();
+
+	next_edit->setEnabled(true);
+	next_edit->setText(NumerotationContext::formatValue(next_context.itemAt(index)));
+}
+
+/**
+	@brief AutoNumberingDockWidget::refreshRow
+	Refresh a category's value, increment and next-value preview together --
+	every call site that used to refresh just the value field needs the
+	other two kept in step with it as well.
+*/
+void AutoNumberingDockWidget::refreshRow(AutoNumCategory category)
+{
+	const Row row = rowFor(category);
+	refreshValueField(row.combo, row.value, category);
+	refreshIncreaseField(row.combo, row.increase, category);
+	refreshNextField(row.combo, row.next, category);
 }

 /**
@@ -557,10 +685,5 @@ void AutoNumberingDockWidget::resetAutoNum(QComboBox *combo_box, AutoNumCategory
 	}

 	storeContext(combo_box, category, context);
-
-	switch (category) {
-		case AutoNumCategory::Conductor: refreshValueField(combo_box, ui->m_conductor_value_le, category); break;
-		case AutoNumCategory::Element:   refreshValueField(combo_box, ui->m_element_value_le, category);   break;
-		case AutoNumCategory::Folio:     refreshValueField(combo_box, ui->m_folio_value_le, category);     break;
-	}
+	refreshRow(category);
 }
@@ -25,6 +25,7 @@

 class QComboBox;
 class QLineEdit;
+class QSpinBox;

 namespace Ui {
 	class AutoNumberingDockWidget;
@@ -66,12 +67,27 @@ class AutoNumberingDockWidget : public QDockWidget
 		void on_m_element_value_le_editingFinished();
 		void on_m_folio_value_le_editingFinished();

+		void on_m_conductor_increase_sb_valueChanged(int);
+		void on_m_element_increase_sb_valueChanged(int);
+		void on_m_folio_increase_sb_valueChanged(int);
+
 	signals:
-		void folioAutoNumChanged(QString);

 	private:
 		enum class AutoNumCategory { Conductor, Element, Folio };

+			/// The four widgets that make up one category's row, bundled so
+			/// refreshRow() can be called with just a category instead of
+			/// four pointers that must always be passed in matching sets.
+		struct Row
+		{
+			QComboBox *combo;
+			QLineEdit *value;
+			QSpinBox  *increase;
+			QLineEdit *next;
+		};
+		Row rowFor(AutoNumCategory category) const;
+
 		/**
 			@brief resetAutoNum
 			Reset the numerotation context currently selected in combo_box
@@ -93,6 +109,23 @@ class AutoNumberingDockWidget : public QDockWidget
 		void refreshValueField(QComboBox *combo_box, QLineEdit *line_edit, AutoNumCategory category);
 		void applyValueField(QComboBox *combo_box, QLineEdit *line_edit, AutoNumCategory category);

+			/// Refresh/apply the increment spin box the same way.
+		void refreshIncreaseField(QComboBox *combo_box, QSpinBox *increase_sb, AutoNumCategory category);
+		void applyIncreaseField(QComboBox *combo_box, QSpinBox *increase_sb, AutoNumCategory category);
+
+			/// Show what the counter will read after one more step, using
+			/// the same NumerotationContextCommands engine the Suivant
+			/// button in the full configuration dialog already advances
+			/// the whole context with -- so the preview can never disagree
+			/// with what actually happens when the number is next consumed.
+		void refreshNextField(QComboBox *combo_box, QLineEdit *next_edit, AutoNumCategory category);
+
+			/// Refresh a whole row -- value, increment and next-value
+			/// preview -- in one call. Every refresh call site needs the
+			/// increment and preview kept in step with the value now, so
+			/// this replaces refreshValueField() at each of them.
+		void refreshRow(AutoNumCategory category);
+
 		Ui::AutoNumberingDockWidget *ui;
 		QETProject* m_project = nullptr;
 		ProjectView* m_project_view = nullptr;
@@ -15,6 +15,36 @@
  </property>
  <widget class="QWidget" name="dockWidgetContents">
   <layout class="QGridLayout" name="gridLayout">
+    <item row="0" column="3">
+     <widget class="QLabel" name="value_header_label">
+      <property name="text">
+       <string>Valeur</string>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="4">
+     <widget class="QLabel" name="increase_header_label">
+      <property name="text">
+       <string>Incrément</string>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="5">
+     <widget class="QLabel" name="next_header_label">
+      <property name="text">
+       <string>Suivant</string>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+     </widget>
+    </item>
    <item row="3" column="1">
     <widget class="QComboBox" name="m_element_cb"/>
    </item>
@@ -61,6 +91,47 @@
      </property>
     </widget>
    </item>
+    <item row="2" column="4">
+     <widget class="QSpinBox" name="m_conductor_increase_sb">
+      <property name="maximumSize">
+       <size>
+        <width>55</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="toolTip">
+       <string>Incrément : valeur ajoutée au compteur à chaque nouvelle numérotation</string>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+      <property name="accelerated">
+       <bool>true</bool>
+      </property>
+      <property name="minimum">
+       <number>0</number>
+      </property>
+     </widget>
+    </item>
+    <item row="2" column="5">
+     <widget class="QLineEdit" name="m_conductor_next_le">
+      <property name="maximumSize">
+       <size>
+        <width>70</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="toolTip">
+       <string>Prochaine valeur qui sera appliquée avec cet incrément</string>
+      </property>
+      <property name="readOnly">
+       <bool>true</bool>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+     </widget>
+    </item>
    <item row="3" column="0">
     <widget class="QLabel" name="label">
      <property name="text">
@@ -108,6 +179,47 @@
      </property>
     </widget>
    </item>
+    <item row="3" column="4">
+     <widget class="QSpinBox" name="m_element_increase_sb">
+      <property name="maximumSize">
+       <size>
+        <width>55</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="toolTip">
+       <string>Incrément : valeur ajoutée au compteur à chaque nouvelle numérotation</string>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+      <property name="accelerated">
+       <bool>true</bool>
+      </property>
+      <property name="minimum">
+       <number>0</number>
+      </property>
+     </widget>
+    </item>
+    <item row="3" column="5">
+     <widget class="QLineEdit" name="m_element_next_le">
+      <property name="maximumSize">
+       <size>
+        <width>70</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="toolTip">
+       <string>Prochaine valeur qui sera appliquée avec cet incrément</string>
+      </property>
+      <property name="readOnly">
+       <bool>true</bool>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+     </widget>
+    </item>
    <item row="4" column="1">
     <widget class="QComboBox" name="m_folio_cb"/>
    </item>
@@ -144,6 +256,47 @@
      </property>
     </widget>
    </item>
+    <item row="4" column="4">
+     <widget class="QSpinBox" name="m_folio_increase_sb">
+      <property name="maximumSize">
+       <size>
+        <width>55</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="toolTip">
+       <string>Incrément : valeur ajoutée au compteur à chaque nouvelle numérotation</string>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+      <property name="accelerated">
+       <bool>true</bool>
+      </property>
+      <property name="minimum">
+       <number>0</number>
+      </property>
+     </widget>
+    </item>
+    <item row="4" column="5">
+     <widget class="QLineEdit" name="m_folio_next_le">
+      <property name="maximumSize">
+       <size>
+        <width>70</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="toolTip">
+       <string>Prochaine valeur qui sera appliquée avec cet incrément</string>
+      </property>
+      <property name="readOnly">
+       <bool>true</bool>
+      </property>
+      <property name="alignment">
+       <set>Qt::AlignCenter</set>
+      </property>
+     </widget>
+    </item>
    <item row="6" column="0">
     <spacer name="verticalSpacer">
      <property name="orientation">
@@ -112,7 +112,7 @@ void SelectAutonumW::setContext(const NumerotationContext &context)
 	else {
 		for (int i=0; i<m_context.size(); ++i) { //build with the content of @context
 			NumPartEditorW *part= new NumPartEditorW(m_context, i, m_edited_type, this);
-			connect (part, SIGNAL(changed()), this, SLOT(applyEnable()));
+			connect(part, &NumPartEditorW::changed, this, [this]() { applyEnable(); });
 			num_part_list_ << part;
 			ui -> editor_layout -> addWidget(part);
 		}
@@ -145,7 +145,7 @@ void SelectAutonumW::on_add_button_clicked()
 {
 	applyEnable(false);
 	NumPartEditorW *part = new NumPartEditorW(m_edited_type, this);
-	connect (part, SIGNAL(changed()), this, SLOT(applyEnable()));
+	connect(part, &NumPartEditorW::changed, this, [this]() { applyEnable(); });
 	num_part_list_ << part;
 	ui -> editor_layout -> addWidget(part);
 	ui -> remove_button -> setEnabled(true);
@@ -160,7 +160,7 @@ void SelectAutonumW::on_remove_button_clicked()
 	//remove if @num_part_list contains more than one item
 	if (num_part_list_.size() > 1) {
 		NumPartEditorW *part = num_part_list_.takeLast();
-		disconnect(part, SIGNAL(changed()), this, SLOT(applyEnable()));
+		// deliberately not disconnecting as not possible to resolve with lambda and will happen automatically when the object "part" is destroyed.
 		delete part;
 		if (num_part_list_.size() == 1) {
 			ui -> remove_button -> setDisabled(true);
@@ -0,0 +1,237 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "autobreakconductor.h"
+
+#include "diagram.h"
+#include "qetproject.h"
+#include "conductorautonumerotation.h"
+#include "qetgraphicsitem/element.h"
+#include "qetgraphicsitem/terminal.h"
+#include "qetgraphicsitem/conductor.h"
+#include "undocommand/addgraphicsobjectcommand.h"
+#include "undocommand/deleteqgraphicsitemcommand.h"
+
+#include <QPainterPath>
+#include <QMap>
+#include <limits>
+
+namespace {
+
+/**
+	@brief distanceToSegment
+	@param point : point to measure from
+	@param segment : the finite segment (not the infinite line through it)
+	@return the distance from @a point to the closest point actually on
+	@a segment.  Unlike QET::orthogonalProjection(), which reports a hit
+	for any point on the segment's infinite extension, this clamps the
+	projection to the segment itself: a point collinear with a wire but
+	past its actual drawn end is correctly reported as far away, not "on"
+	the wire.
+*/
+qreal distanceToSegment(const QPointF &point, const QLineF &segment)
+{
+	const QPointF a = segment.p1();
+	const QPointF b = segment.p2();
+	const QPointF ab = b - a;
+	const qreal len2 = QPointF::dotProduct(ab, ab);
+
+	if (len2 <= 0.0)
+		return QLineF(point, a).length();
+
+	qreal t = QPointF::dotProduct(point - a, ab) / len2;
+	t = qBound(0.0, t, 1.0);
+	return QLineF(point, a + t * ab).length();
+}
+
+} // anonymous namespace
+
+/**
+	@brief autoBreakConductors
+	For each terminal of @a element, check if its dock point lies on an
+	existing conductor.  If so, break the conductor and reconnect through
+	the element's terminal.  Broken conductors from the same circuit
+	(sharing the same far-end endpoint) are broken together; independent
+	crossing conductors are left untouched.
+*/
+QSet<Terminal *> autoBreakConductors(
+	Diagram *diagram,
+	Element *element,
+	QUndoCommand *parent,
+	QList<Conductor *> &conductors_handled,
+	QSet<Terminal *> &used_terminals)
+{
+	QSet<Terminal *> broken_endpoints;
+
+	if (!diagram->project()->autoBreakConductor())
+		return broken_endpoints;
+
+	foreach (Terminal *t, element->terminals())
+	{
+		if (used_terminals.contains(t))
+			continue;
+
+		QPointF t_dock = t->dockConductor();
+
+		struct ConductorMatch {
+			Conductor *conductor;
+			Terminal *connect_to;
+			Terminal *other;
+		};
+		QList<ConductorMatch> all_matches;
+
+		foreach (Conductor *c, diagram->conductors())
+		{
+			if (conductors_handled.contains(c) ||
+			    c->terminal1->parentElement() == element ||
+			    c->terminal2->parentElement() == element)
+				continue;
+
+			QPointF local_dock = c->mapFromScene(t_dock);
+			bool point_on_conductor = false;
+			QPainterPath path = c->path();
+			for (int i = 0; i < path.elementCount() - 1; ++i)
+			{
+				const QPainterPath::Element &e1 = path.elementAt(i);
+				const QPainterPath::Element &e2 = path.elementAt(i + 1);
+				QLineF segment(QPointF(e1.x, e1.y), QPointF(e2.x, e2.y));
+				if (distanceToSegment(local_dock, segment) < 5.0)
+				{
+					point_on_conductor = true;
+					break;
+				}
+			}
+
+			if (!point_on_conductor)
+				continue;
+
+			Terminal *c1 = c->terminal1;
+			Terminal *c2 = c->terminal2;
+			QPointF c1_dock = c1->dockConductor();
+			QPointF c2_dock = c2->dockConductor();
+
+			Terminal *connect_to = nullptr;
+			Terminal *other = nullptr;
+
+			switch (t->orientation()) {
+				case Qet::North:
+					if (c1_dock.y() < t_dock.y()) { connect_to = c1; other = c2; }
+					else if (c2_dock.y() < t_dock.y()) { connect_to = c2; other = c1; }
+					break;
+				case Qet::South:
+					if (c1_dock.y() > t_dock.y()) { connect_to = c1; other = c2; }
+					else if (c2_dock.y() > t_dock.y()) { connect_to = c2; other = c1; }
+					break;
+				case Qet::East:
+					if (c1_dock.x() > t_dock.x()) { connect_to = c1; other = c2; }
+					else if (c2_dock.x() > t_dock.x()) { connect_to = c2; other = c1; }
+					break;
+				case Qet::West:
+					if (c1_dock.x() < t_dock.x()) { connect_to = c1; other = c2; }
+					else if (c2_dock.x() < t_dock.x()) { connect_to = c2; other = c1; }
+					break;
+			}
+
+			if (!connect_to) {
+				qreal d1 = QLineF(t_dock, c1_dock).length();
+				qreal d2 = QLineF(t_dock, c2_dock).length();
+				if (d1 <= d2) { connect_to = c1; other = c2; }
+				else { connect_to = c2; other = c1; }
+			}
+
+			all_matches.append({c, connect_to, other});
+		}
+
+		if (all_matches.isEmpty())
+			continue;
+
+		QMap<Terminal *, QList<ConductorMatch>> groups;
+		for (const auto &m : all_matches) {
+			groups[m.other].append(m);
+		}
+		Terminal *best_other = nullptr;
+		int best_count = 0;
+		for (auto it = groups.constBegin(); it != groups.constEnd(); ++it) {
+			if (it.value().size() > best_count) {
+				best_count = it.value().size();
+				best_other = it.key();
+			}
+		}
+
+		const QList<ConductorMatch> &matches = groups[best_other];
+
+		used_terminals.insert(t);
+
+		DiagramContent content;
+		for (const auto &m : matches) {
+			content.m_other_conductors.append(m.conductor);
+			conductors_handled.append(m.conductor);
+		}
+		new DeleteQGraphicsItemCommand(diagram, content, parent);
+
+		for (const auto &m : matches) {
+			Conductor *new_c = new Conductor(m.connect_to, t);
+			new AddGraphicsObjectCommand(new_c, diagram, QPointF(), parent);
+			ConductorAutoNumerotation can(new_c, diagram, parent);
+			can.numerate();
+			if (diagram->freezeNewConductors() || diagram->project()->isFreezeNewConductors())
+				new_c->setFreezeLabel(true);
+
+			broken_endpoints.insert(m.connect_to);
+		}
+
+		QPointF other_dock = best_other->dockConductor();
+		Terminal *other_terminal = nullptr;
+		qreal best_dist = std::numeric_limits<qreal>::max();
+		foreach (Terminal *ot, element->terminals())
+		{
+			if (used_terminals.contains(ot))
+				continue;
+
+			QPointF ot_dock = ot->dockConductor();
+			bool orientation_ok = false;
+			switch (ot->orientation()) {
+				case Qet::North: orientation_ok = other_dock.y() < ot_dock.y(); break;
+				case Qet::South: orientation_ok = other_dock.y() > ot_dock.y(); break;
+				case Qet::East:  orientation_ok = other_dock.x() > ot_dock.x(); break;
+				case Qet::West:  orientation_ok = other_dock.x() < ot_dock.x(); break;
+			}
+			if (!orientation_ok)
+				continue;
+
+			qreal dist = QLineF(ot_dock, other_dock).length();
+			if (dist < best_dist) {
+				best_dist = dist;
+				other_terminal = ot;
+			}
+		}
+
+		if (other_terminal) {
+			Conductor *new_c2 = new Conductor(best_other, other_terminal);
+			new AddGraphicsObjectCommand(new_c2, diagram, QPointF(), parent);
+			ConductorAutoNumerotation can2(new_c2, diagram, parent);
+			can2.numerate();
+			if (diagram->freezeNewConductors() || diagram->project()->isFreezeNewConductors())
+				new_c2->setFreezeLabel(true);
+
+			broken_endpoints.insert(best_other);
+			used_terminals.insert(other_terminal);
+		}
+	}
+
+	return broken_endpoints;
+}
@@ -0,0 +1,57 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef AUTOBREAKCONDUCTOR_H
+#define AUTOBREAKCONDUCTOR_H
+
+#include <QSet>
+#include <QList>
+
+class Diagram;
+class Element;
+class Terminal;
+class Conductor;
+class QUndoCommand;
+
+/**
+	@brief autoBreakConductors
+	For each terminal of @a element, check if its dock point lies on an
+	existing conductor. If so, break the conductor and reconnect through the
+	element's terminal.  Broken conductors from the same circuit (sharing the
+	same far-end endpoint) are broken together; independent crossing
+	conductors are left untouched.
+	@param diagram            the diagram containing the conductors
+	@param element            the element whose terminals trigger breaks
+	@param parent             undo command under which break/reconnect
+	                          sub-commands are created
+	@param conductors_handled shared list of conductors already claimed by
+	                          a previous call in the same batch (prevents
+	                          double-processing when multiple elements are
+	                          broken in one pass)
+	@param used_terminals     shared set of terminals already used as
+	                          connect_to or other_terminal in the same batch
+	@return set of terminals that were connected to a broken conductor's
+	        far-end (useful for preventing duplicate auto-connect)
+*/
+QSet<Terminal *> autoBreakConductors(
+	Diagram *diagram,
+	Element *element,
+	QUndoCommand *parent,
+	QList<Conductor *> &conductors_handled,
+	QSet<Terminal *> &used_terminals);
+
+#endif // AUTOBREAKCONDUCTOR_H
@@ -73,6 +73,8 @@ class BorderTitleBlock : public QObject
 			return(rows_count_ * rows_height_); }
 		/// @return la rows header width, in pixels
 		qreal rowsHeaderWidth() const { return(rows_header_width_); }
+		/// @return the edge where title block is docked
+		Qt::Edge titleBlockEdge() const { return(m_edge); }
 	
 		// border - title block = diagram
 		/**
@@ -72,14 +72,8 @@ bool ConductorNumExport::toCsv()
 		if (file.open(QIODevice::WriteOnly | QIODevice::Text))
 		{
 			QTextStream stream(&file);
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)	// ### Qt 6: remove
-			stream << wiresNum() << endl;
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.15 or later")
-#endif
+
 			stream << wiresNum() << &Qt::endl(stream);
-#endif
 		}
 		else {
 			return false;
@@ -811,14 +811,7 @@ void ConductorProperties::readStyle(const QString &style_string) {
 	if (style_string.isEmpty()) return;

 	// recupere la liste des couples style / valeur
-#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)	// ### Qt 6: remove
-	QStringList styles = style_string.split(";", QString::SkipEmptyParts);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code QString::SkipEmptyParts for QT 5.14 or later")
-#endif
 	QStringList styles = style_string.split(";", Qt::SkipEmptyParts);
-#endif

 	QRegularExpression Rx("^(?<name>[a-z-]+): (?<value>[a-z-]+)$");
 	if (!Rx.isValid())
@@ -74,10 +74,9 @@ ConfigDialog::ConfigDialog(QWidget *parent) : QDialog(parent) {
 	setLayout(dialog_layout);

 	// connexion signaux / slots
-	connect(buttons, SIGNAL(accepted()), this, SLOT(applyConf()));
-	connect(buttons, SIGNAL(rejected()), this, SLOT(reject()));
-	connect(pages_list, SIGNAL(currentRowChanged(int)),
-		pages_widget, SLOT(setCurrentIndex(int)));
+	connect(buttons, &QDialogButtonBox::accepted, this, &ConfigDialog::applyConf);
+	connect(buttons, &QDialogButtonBox::rejected, this, &ConfigDialog::reject);
+	connect(pages_list, &QListWidget::currentRowChanged, pages_widget, &QStackedWidget::setCurrentIndex);

 	// set maximum a bit smaller than available size = (screen-size - Task-Bar):
 	setMaximumSize((int)(0.94 * MachineInfo::instance()->i_max_available_width()),
@@ -21,7 +21,9 @@
 #include "../diagramposition.h"
 #include "../elementprovider.h"
 #include "../qetapp.h"
+#include "../qetgraphicsitem/conductor.h"
 #include "../qetgraphicsitem/element.h"
+#include "../qetgraphicsitem/terminal.h"
 #include "../qetinformation.h"
 #include "../qetproject.h"

@@ -87,6 +89,7 @@ void projectDataBase::updateDB()
 	populateDiagramInfoTable();
 	populateElementTable();
 	populateElementInfoTable();
+	populateConductorTable();
 	emit dataBaseUpdated();
 }

@@ -245,6 +248,132 @@ void projectDataBase::diagramOrderChanged()
 {
 }

+/**
+	@brief projectDataBase::addConductor
+	@param conductor
+*/
+void projectDataBase::addConductor(Conductor *conductor)
+{
+	if (!conductor || !conductor->diagram()) {
+		qDebug() << "projectDataBase::addConductor: null conductor or diagram";
+		return;
+	}
+
+		//Both endpoints must belong to an element: the terminal table is keyed
+		//on (terminal, element) and a terminal with no parent has no identity
+		//to key on. Terminals whose *definition* predates terminal uuids are
+		//fine -- Terminal::stableUuid() derives one from the terminal's local
+		//position, which is what the project format itself matches on.
+	if (!conductor->terminal1->parentElement()
+		|| !conductor->terminal2->parentElement()) {
+		return;
+	}
+
+	insertTerminal(conductor->terminal1);
+	insertTerminal(conductor->terminal2);
+
+	watchConductor(conductor);
+	bindConductorValues(m_insert_conductor_query, conductor, conductor->diagram());
+	if (!m_insert_conductor_query.exec()) {
+		qDebug() << "projectDataBase::addConductor insert error : " << m_insert_conductor_query.lastError();
+	} else {
+		emit dataBaseUpdated();
+	}
+}
+
+/**
+	@brief projectDataBase::removeConductor
+	@param conductor
+*/
+void projectDataBase::removeConductor(Conductor *conductor)
+{
+	m_remove_conductor_query.bindValue(":uuid", conductor->uuid().toString());
+	if (!m_remove_conductor_query.exec()) {
+		qDebug() << "projectDataBase::removeConductor delete error : " << m_remove_conductor_query.lastError();
+	} else {
+		emit dataBaseUpdated();
+	}
+}
+
+/**
+	@brief projectDataBase::updateConductor
+	Refresh the mutable columns of an already-inserted conductor.
+
+	Only the text (the wire number) can change without the conductor being
+	removed and re-added: its endpoints are fixed for its lifetime. Without
+	this, renaming a wire left the database holding the old number and the
+	wiring list showed a stale value until the next full repopulate.
+	@param conductor
+*/
+void projectDataBase::updateConductor(Conductor *conductor)
+{
+	if (!conductor) {
+		return;
+	}
+
+	m_update_conductor_query.bindValue(QStringLiteral(":uuid"), conductor->uuid().toString());
+	m_update_conductor_query.bindValue(QStringLiteral(":text"), conductor->properties().text);
+	if (!m_update_conductor_query.exec()) {
+		qDebug() << "projectDataBase::updateConductor update error : " << m_update_conductor_query.lastError();
+	}
+
+		//Deliberately no dataBaseUpdated() here, unlike add/remove. The only
+		//column this touches is the wire text, which no view watched by
+		//ProjectDBModel displays -- the nomenclature shows elements, and its
+		//wire_count changes when a conductor appears or disappears, not when
+		//it is renamed. Emitting would make every ProjectDBModel re-run its
+		//query, and auto-numbering renames every conductor in the project in
+		//one pass.
+}
+
+/**
+	@brief projectDataBase::watchConductor
+	Keep this conductor's row in step with its properties.
+
+	Conductor::setProperties() has a dozen call sites (auto-numbering, the
+	properties dialog, element moves, deletion re-links...), so listening to
+	the signal it already emits is the only way to catch them all -- and the
+	only way to catch the ones added later. Qt::UniqueConnection makes a
+	repeated insert or a full repopulate harmless.
+	@param conductor
+*/
+void projectDataBase::watchConductor(Conductor *conductor)
+{
+	connect(conductor, &Conductor::propertiesChange,
+			this, &projectDataBase::conductorPropertiesChanged,
+			Qt::UniqueConnection);
+}
+
+/**
+	@brief projectDataBase::conductorPropertiesChanged
+*/
+void projectDataBase::conductorPropertiesChanged()
+{
+	if (auto *conductor = qobject_cast<Conductor *>(sender())) {
+		updateConductor(conductor);
+	}
+}
+
+/**
+	@brief projectDataBase::bindConductorValues
+	One binder for both insert paths, so a conductor added to a live diagram
+	and one read from a file can never drift apart -- the same reason
+	bindElementValues() exists for elements.
+	@param query
+	@param conductor
+	@param diagram : the diagram the conductor belongs to
+*/
+void projectDataBase::bindConductorValues(QSqlQuery &query, Conductor *conductor, Diagram *diagram)
+{
+	query.bindValue(QStringLiteral(":uuid"), conductor->uuid().toString());
+	query.bindValue(QStringLiteral(":diagram_uuid"), diagram->uuid().toString());
+	query.bindValue(QStringLiteral(":terminal1_uuid"), conductor->terminal1->stableUuid().toString());
+	query.bindValue(QStringLiteral(":terminal1_element_uuid"), conductor->terminal1->parentElement()->uuid().toString());
+	query.bindValue(QStringLiteral(":terminal2_uuid"), conductor->terminal2->stableUuid().toString());
+	query.bindValue(QStringLiteral(":terminal2_element_uuid"), conductor->terminal2->parentElement()->uuid().toString());
+	query.bindValue(QStringLiteral(":text"), conductor->properties().text);
+}
+
 /**
 	@brief projectDataBase::createDataBase
 	Create the data base
@@ -323,6 +452,57 @@ bool projectDataBase::createDataBase()
 		qDebug() << " element_info_table query : " << query_.lastError();
 	}

+	//Create the terminal table.
+	//Terminal::uuid() is the terminal-position id baked into the catalog
+	//.elmt definition (e.g. "the top terminal") -- identical across every
+	//placed instance of that catalog element, not a per-instance id. A
+	//terminal instance is only uniquely identified by (uuid, element_uuid)
+	//together, so that pair is the primary key here, not uuid alone.
+	QString terminal_table("CREATE TABLE terminal"
+						  "( "
+						  "uuid VARCHAR(50) NOT NULL, "
+						  "element_uuid VARCHAR(50) NOT NULL,"
+						  "name VARCHAR(50),"
+						  "PRIMARY KEY (uuid, element_uuid),"
+						  "FOREIGN KEY (element_uuid) REFERENCES element (uuid)"
+						  ")");
+	if (!query_.exec(terminal_table)) {
+		qDebug() << "terminal_table query : "<< query_.lastError();
+	}
+
+	//Create the conductor table
+	QString conductor_table("CREATE TABLE conductor"
+						  "( "
+						  "uuid VARCHAR(50) PRIMARY KEY NOT NULL, "
+						  "diagram_uuid VARCHAR(50) NOT NULL,"
+						  "terminal1_uuid VARCHAR(50) NOT NULL,"
+						  "terminal1_element_uuid VARCHAR(50) NOT NULL,"
+						  "terminal2_uuid VARCHAR(50) NOT NULL,"
+						  "terminal2_element_uuid VARCHAR(50) NOT NULL,"
+						  "text VARCHAR(100),"
+						  "FOREIGN KEY (diagram_uuid) REFERENCES diagram (uuid),"
+						  "FOREIGN KEY (terminal1_uuid, terminal1_element_uuid) REFERENCES terminal (uuid, element_uuid),"
+						  "FOREIGN KEY (terminal2_uuid, terminal2_element_uuid) REFERENCES terminal (uuid, element_uuid)"
+						  ")");
+	if (!query_.exec(conductor_table)) {
+		qDebug() << "conductor_table query : "<< query_.lastError();
+	}
+
+		//The element-facing columns are looked up per element row, not per
+		//conductor row: element_nomenclature_view carries a correlated
+		//subquery counting the wires touching each element. Without these
+		//indexes each element row full-scans the conductor table, which grows
+		//as elements x conductors.
+	for (const QString &index_ : {
+			QStringLiteral("CREATE INDEX idx_conductor_terminal1_element ON conductor (terminal1_element_uuid)"),
+			QStringLiteral("CREATE INDEX idx_conductor_terminal2_element ON conductor (terminal2_element_uuid)"),
+			QStringLiteral("CREATE INDEX idx_conductor_diagram ON conductor (diagram_uuid)") })
+	{
+		if (!query_.exec(index_)) {
+			qDebug() << "conductor index query : " << query_.lastError();
+		}
+	}
+
 	createElementNomenclatureView();
 	createSummaryView();
 	prepareQuery();
@@ -534,6 +714,58 @@ void projectDataBase::populateDiagramInfoTable()
 	}
 }

+/**
+	@brief projectDataBase::populateConductorTable
+	Populate the terminal and conductor tables. Terminals only matter here
+	in the context of a conductor referencing them, so their population is
+	folded into this method rather than tracked independently.
+*/
+void projectDataBase::populateConductorTable()
+{
+	QSqlQuery query(m_data_base);
+	query.exec(QStringLiteral("DELETE FROM conductor"));
+	query.exec(QStringLiteral("DELETE FROM terminal"));
+
+	for (auto *diagram : m_project->diagrams())
+	{
+		const auto conductor_list = diagram->conductors();
+		for (auto *conductor : conductor_list)
+		{
+				//See addConductor(): only a terminal with no parent element is
+				//skipped. A missing terminal uuid is handled by stableUuid().
+			if (!conductor->terminal1->parentElement()
+				|| !conductor->terminal2->parentElement()) {
+				continue;
+			}
+
+			insertTerminal(conductor->terminal1);
+			insertTerminal(conductor->terminal2);
+
+			watchConductor(conductor);
+			bindConductorValues(m_insert_conductor_query, conductor, diagram);
+			if (!m_insert_conductor_query.exec()) {
+				qDebug() << "projectDataBase::populateConductorTable insert error : " << m_insert_conductor_query.lastError();
+			}
+		}
+	}
+}
+
+/**
+	@brief projectDataBase::insertTerminal
+	Insert (or, if already present -- e.g. a junction shared by several
+	conductors -- silently keep) @terminal in the terminal table.
+	@param terminal
+*/
+void projectDataBase::insertTerminal(Terminal *terminal)
+{
+	m_insert_terminal_query.bindValue(":uuid", terminal->stableUuid().toString());
+	m_insert_terminal_query.bindValue(":element_uuid", terminal->parentElement()->uuid().toString());
+	m_insert_terminal_query.bindValue(":name", terminal->name());
+	if (!m_insert_terminal_query.exec()) {
+		qDebug() << "projectDataBase::insertTerminal insert error : " << m_insert_terminal_query.lastError();
+	}
+}
+
 void projectDataBase::prepareQuery()
 {
 		//INSERT DIAGRAM
@@ -606,6 +838,23 @@ void projectDataBase::prepareQuery()
 	update_str.append(" WHERE element_uuid = :uuid");
 	m_update_element_query = QSqlQuery(m_data_base);
 	m_update_element_query.prepare(update_str);
+
+		//INSERT TERMINAL
+	m_insert_terminal_query = QSqlQuery(m_data_base);
+	m_insert_terminal_query.prepare("INSERT OR IGNORE INTO terminal (uuid, element_uuid, name) VALUES (:uuid, :element_uuid, :name)");
+
+		//INSERT CONDUCTOR
+	m_insert_conductor_query = QSqlQuery(m_data_base);
+	m_insert_conductor_query.prepare("INSERT INTO conductor (uuid, diagram_uuid, terminal1_uuid, terminal1_element_uuid, terminal2_uuid, terminal2_element_uuid, text) "
+					  "VALUES (:uuid, :diagram_uuid, :terminal1_uuid, :terminal1_element_uuid, :terminal2_uuid, :terminal2_element_uuid, :text)");
+
+		//UPDATE CONDUCTOR
+	m_update_conductor_query = QSqlQuery(m_data_base);
+	m_update_conductor_query.prepare(QStringLiteral("UPDATE conductor SET text = :text WHERE uuid = :uuid"));
+
+		//REMOVE CONDUCTOR
+	m_remove_conductor_query = QSqlQuery(m_data_base);
+	m_remove_conductor_query.prepare("DELETE FROM conductor WHERE uuid=:uuid");
 }

 /**
@@ -27,6 +27,8 @@
 class Element;
 class QETProject;
 class Diagram;
+class Conductor;
+class Terminal;
 class sqlite3;

 /**
@@ -58,6 +60,16 @@ class projectDataBase : public QObject
 		void diagramInfoChanged (Diagram *diagram);
 		void diagramOrderChanged();

+		void addConductor       (Conductor *conductor);
+		void removeConductor    (Conductor *conductor);
+		void updateConductor    (Conductor *conductor);
+
+	private slots:
+			//Refresh the sender()'s row after Conductor::setProperties().
+		void conductorPropertiesChanged();
+
+	public:
+
 	signals:
 		void dataBaseUpdated();

@@ -69,6 +81,10 @@ class projectDataBase : public QObject
 		void populateElementTable();
 		void populateElementInfoTable();
 		void populateDiagramInfoTable();
+		void populateConductorTable();
+		void bindConductorValues(QSqlQuery &query, Conductor *conductor, Diagram *diagram);
+		void watchConductor(Conductor *conductor);
+		void insertTerminal(Terminal *terminal);
 		void prepareQuery();
 		static QHash<QString, QString> elementInfoToString(
 				Element *elmt);
@@ -86,7 +102,11 @@ class projectDataBase : public QObject
 				  m_insert_diagram_info_query,
 				  m_update_diagram_info_query,
 				  m_diagram_order_changed,
-				  m_diagram_info_order_changed;
+				  m_diagram_info_order_changed,
+				  m_insert_terminal_query,
+				  m_insert_conductor_query,
+				  m_update_conductor_query,
+				  m_remove_conductor_query;

 #ifdef QET_EXPORT_PROJECT_DB
 	public:
@@ -48,14 +48,8 @@ ElementQueryWidget::ElementQueryWidget(QWidget *parent) :
 	m_button_group.addButton(ui->m_protection_cb, 5);
 	m_button_group.addButton(ui->m_thumbnail_cb, 6);
 	m_button_group.addButton(ui->m_plc_cb, 7);
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)	// ### Qt 6: remove
-	connect(&m_button_group, static_cast<void (QButtonGroup::*)(int)>(&QButtonGroup::buttonClicked), [this](int id)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.15 or later")
-#endif
 	connect(&m_button_group, static_cast<void (QButtonGroup::*)(int)>(&QButtonGroup::idClicked), [this](int id)
-#endif
+
 	{
 		auto check_box = static_cast<QCheckBox *>(m_button_group.button(0));
 		if (id == 0)
@@ -384,10 +378,10 @@ QString ElementQueryWidget::queryStr() const
 		where.clear();
 	}

-	QString exclude_condition = "(exclude_from_bom IS NULL OR exclude_from_bom != '1')";
-
-	filter_ += " AND " + exclude_condition;
-	// -------------------------------------------------------------
+	// exclude_from_bom is already filtered by element_nomenclature_view
+	// (see createElementNomenclatureView() in projectdatabase.cpp); this
+	// widget's query reads FROM that view, so a flagged element never
+	// reaches this point in the first place.

 	if (where.isEmpty() && !filter_.isEmpty()) {
 		filter_.remove(0, 4); //Remove the first " AND" of filter.
@@ -67,6 +67,7 @@ Diagram::Diagram(QETProject *project) :
 	m_project                (project),
 	use_border_              (true),
 	draw_terminals_          (true),
+	draw_terminal_names_     (true),
 	draw_colored_conductors_ (true),
 	m_event_interface        (nullptr),
 	m_freeze_new_elements    (false),
@@ -1555,14 +1556,6 @@ bool Diagram::fromXml(QDomElement &document,
 	if (content_ptr) {
 		content_ptr -> m_elements           = added_elements;
 		content_ptr -> m_conductors_to_move = added_conductors;
-#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)	// ### Qt 6: remove
-		content_ptr -> m_text_fields        = added_texts.toSet();
-		content_ptr -> m_images			    = added_images.toSet();
-		content_ptr -> m_shapes			    = added_shapes.toSet();
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.14 or later")
-#endif
 		content_ptr -> m_text_fields	= QSet<IndependentTextItem *>(
 					added_texts.begin(),
 					added_texts.end());
@@ -1573,7 +1566,6 @@ bool Diagram::fromXml(QDomElement &document,
 					added_shapes.begin(),
 					added_shapes.end());
 		content_ptr->m_terminal_strip.swap(added_strips);
-#endif
 		content_ptr->m_tables.swap(added_tables);
 	}

@@ -1674,6 +1666,7 @@ void Diagram::addItem(QGraphicsItem *item)
 			conductor->terminal1->addConductor(conductor);
 			conductor->terminal2->addConductor(conductor);
 			conductor->calculateTextItemPosition();
+			m_project->dataBase()->addConductor(conductor);
 			break;
 		}
 		default: {break;}
@@ -1704,6 +1697,7 @@ void Diagram::removeItem(QGraphicsItem *item)
 			Conductor *conductor = static_cast<Conductor *>(item);
 			conductor->terminal1->removeConductor(conductor);
 			conductor->terminal2->removeConductor(conductor);
+			m_project->dataBase()->removeConductor(conductor);
 			break;
 		}
 		default: {break;}
@@ -2319,6 +2313,7 @@ ExportProperties Diagram::applyProperties(
 	old_properties.draw_border = border_and_titleblock.borderIsDisplayed();
 	old_properties.draw_titleblock = border_and_titleblock.titleBlockIsDisplayed();
 	old_properties.draw_terminals          = drawTerminals();
+	old_properties.draw_terminal_names     = drawTerminalNames();
 	old_properties.draw_colored_conductors = drawColoredConductors();
 	old_properties.exported_area = useBorder() ? QET::BorderArea
 						   : QET::ElementsArea;
@@ -2327,6 +2322,7 @@ ExportProperties Diagram::applyProperties(
 	// applique les nouvelles options de rendu
 	setUseBorder             (new_properties.exported_area == QET::BorderArea);
 	setDrawTerminals         (new_properties.draw_terminals);
+	setDrawTerminalNames     (new_properties.draw_terminal_names);
 	setDrawColoredConductors (new_properties.draw_colored_conductors);
 	setDisplayGrid           (new_properties.draw_grid);
 	setDisplayGuides         (new_properties.draw_guides);
@@ -2397,9 +2393,24 @@ QPointF Diagram::snapToGrid(const QPointF &p)
 	\~French true pour afficher les bornes, false sinon
 */
 void Diagram::setDrawTerminals(bool dt) {
+	draw_terminals_ = dt;
 	foreach(QGraphicsItem *qgi, items()) {
 		if (Terminal *t = qgraphicsitem_cast<Terminal *>(qgi)) {
-			t -> setVisible(dt);
+			t -> update();
+		}
+	}
+}
+
+/**
+	@brief Diagram::setDrawTerminalNames
+	Defines whether or not to display the terminal names/labels
+	@param dt : true to display the terminal names, false otherwise
+*/
+void Diagram::setDrawTerminalNames(bool dt) {
+	draw_terminal_names_ = dt;
+	foreach(QGraphicsItem *qgi, items()) {
+		if (Terminal *t = qgraphicsitem_cast<Terminal *>(qgi)) {
+			t -> update();
 		}
 	}
 }
@@ -127,6 +127,7 @@ class Diagram : public QGraphicsScene
 		bool draw_guides_;
 		QList<Diagram::Guide> m_guides_list;
 		bool draw_terminals_;
+		bool draw_terminal_names_;
 		bool draw_colored_conductors_;

 		QString m_conductors_autonum_name;
@@ -226,6 +227,8 @@ class Diagram : public QGraphicsScene
 	
 		bool drawTerminals() const;
 		void setDrawTerminals(bool);
+		bool drawTerminalNames() const;
+		void setDrawTerminalNames(bool);
 		bool drawColoredConductors() const;
 		void setDrawColoredConductors(bool);
 	
@@ -426,6 +429,15 @@ inline bool Diagram::drawTerminals() const
 	return(draw_terminals_);
 }

+/**
+	@brief Diagram::drawTerminalNames
+	@return true if terminal names are rendered, false otherwise
+*/
+inline bool Diagram::drawTerminalNames() const
+{
+	return(draw_terminal_names_);
+}
+
 /**
 	@brief Diagram::drawColoredConductors
 	@return true if conductors colors are rendered, false otherwise.
@@ -75,6 +75,13 @@ void PasteDiagramCommand::redo()
 	{
 		first_redo = false;

+		//make new uuid for every pasted conductor, because old uuid are
+		//the uuid of the copied conductor
+		const QList <Conductor *> all_pasted_conductors = content.conductors();
+		for (Conductor *c : all_pasted_conductors) {
+			c -> newUuid();
+		}
+
 		//this is the first paste, we do some actions for the new element
 		const QList <Element *> elmts_list = content.m_elements;
 		for (Element *e : elmts_list)
@@ -92,12 +99,18 @@ void PasteDiagramCommand::redo()
 				dc.addValue("location", "");
 				e->setElementInformations(dc);
 				
-				//Reset the text of conductors
+				//Reset the text of conductors, the same way the label/comment/
+				//location above are reset to "" rather than to some other
+				//value - "erase on copy" means erase, not "replace with the
+				//project's default new-conductor text" (which happens to
+				//default to a literal "_" character, unrelated to whether the
+				//user wanted this copy's old label kept or cleared; see
+				//issue #413).
 				const QList <Conductor *> conductors_list = content.m_conductors_to_move;
 				for (Conductor *c : conductors_list)
 				{
 					ConductorProperties cp = c -> properties();
-					cp.text = c->diagram() ? c -> diagram() -> defaultConductorProperties.text : "_";
+					cp.text = "";
 					c -> setProperties(cp);
 				}
 			}
@@ -20,11 +20,17 @@
 #include "../conductorautonumerotation.h"
 #include "../diagram.h"
 #include "../undocommand/addgraphicsobjectcommand.h"
+#include "../undocommand/deleteqgraphicsitemcommand.h"
 #include "../factory/elementfactory.h"
 #include "../qetapp.h"
 #include "../qetdiagrameditor.h"
 #include "../qetgraphicsitem/element.h"
 #include "../qetgraphicsitem/conductor.h"
+#include "../qetgraphicsitem/terminal.h"
+#include "../qet.h"
+#include "../autobreakconductor.h"
+#include <QPainterPath>
+#include <limits>

 /**
 	@brief DiagramEventAddElement::DiagramEventAddElement
@@ -248,16 +254,32 @@ void DiagramEventAddElement::addElement()
 	QUndoCommand *undo_object = new QUndoCommand(tr("Ajouter %1").arg(element->name()));
 	new AddGraphicsObjectCommand(element, m_diagram, m_element -> pos(), undo_object);

-		//When we search for free aligned terminal we temporally remove m_element to
-		//avoid any interaction with the function Element::AlignedFreeTerminals
-		//This is useful when an element has two (or more) terminals on opposite sides,
-		//because m_element is exactly at the same pos of the new element
-		//added to the scene so new conductor are created between terminal of the new element
-		//and the opposite terminal of m_element.
+	//When we search for free aligned terminal we temporally remove m_element to
+	//avoid any interaction with the function Element::AlignedFreeTerminals
+	//This is useful when an element has two (or more) terminals on opposite sides,
+	//because m_element is exactly at the same pos of the new element
+	//added to the scene so new conductor are created between terminal of the new element
+	//and the opposite terminal of m_element.
 	m_diagram->removeItem(m_element);
-	while (!element -> AlignedFreeTerminals().isEmpty() && m_diagram -> project() -> autoConductor())
+
+		//Auto break conductor: if a terminal of the new element lies on an existing
+		//conductor, break the conductor and reconnect through the new element's terminal.
+		//Track the endpoints of broken conductors so auto-connect doesn't create duplicates.
+	QList<Conductor *> conductors_handled;
+	QSet<Terminal *> used_terminals;
+	QSet<Terminal *> broken_endpoints = autoBreakConductors(m_diagram, element, undo_object,
+							    conductors_handled, used_terminals);
+
+		//Auto-connect: collect all aligned pairs first, then filter and process.
+	QList<QPair<Terminal *, Terminal *>> aligned_pairs;
+	if (m_diagram->project()->autoConductor())
+		aligned_pairs = element->AlignedFreeTerminals();
+
+	for (const QPair<Terminal *, Terminal *> &pair : aligned_pairs)
 	{
-		QPair <Terminal *, Terminal *> pair = element -> AlignedFreeTerminals().takeFirst();
+			//Skip if the other terminal was an endpoint of a broken conductor
+		if (broken_endpoints.contains(pair.second))
+			continue;

 		Conductor *conductor = new Conductor(pair.first, pair.second);
 		new AddGraphicsObjectCommand(conductor, m_diagram, QPointF(), undo_object);
@@ -43,11 +43,7 @@ m_preview_item(nullptr)
 					QString file_name = (last_slash != -1) ? path.mid(last_slash + 1) : path;

 					if (!dir_path.isEmpty()) {
-						#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
-						QStringList parts = dir_path.split('/', QString::SkipEmptyParts);
-						#else
 						QStringList parts = dir_path.split('/', Qt::SkipEmptyParts);
-						#endif
 						QString current_path = "";
 						for (const QString &part : parts) {
 							QString parent_path = current_path;
@@ -202,11 +198,7 @@ bool DiagramEventAddMacro::loadMacro()
 				QString file_name = (last_slash != -1) ? path.mid(last_slash + 1) : path;

 				if (!dir_path.isEmpty()) {
-					#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
-					QStringList parts = dir_path.split('/', QString::SkipEmptyParts);
-					#else
 					QStringList parts = dir_path.split('/', Qt::SkipEmptyParts);
-					#endif
 					QString current_path = "";
 					for (const QString &part : parts) {
 						QString parent_path = current_path;
@@ -0,0 +1,250 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "diagrameventaddpdf.h"
+
+// Whole file is a no-op unless QtPdf is available (see diagrameventaddpdf.h).
+#ifdef QET_HAS_QTPDF
+
+#include "../qetapp.h"
+#include "../diagram.h"
+#include "../undocommand/addgraphicsobjectcommand.h"
+#include "../qetgraphicsitem/diagramimageitem.h"
+#include "../ui/pdfpagesdialog.h"
+
+#include <QPdfDocument>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QPainter>
+
+/**
+	@brief DiagramEventAddPdf::DiagramEventAddPdf
+	Constructor
+	@param diagram the diagram where this event operates
+*/
+DiagramEventAddPdf::DiagramEventAddPdf(Diagram *diagram) :
+	DiagramEventInterface(diagram),
+	m_image(nullptr),
+	m_is_added(false)
+{
+	openDialog();
+}
+
+/**
+	@brief DiagramEventAddPdf::~DiagramEventAddPdf
+	Destructor
+*/
+DiagramEventAddPdf::~DiagramEventAddPdf()
+{
+	if (m_running || m_abort)
+	{
+		if (m_is_added) m_diagram->removeItem(m_image);
+		delete m_image;
+	}
+
+	foreach (QGraphicsView *view, m_diagram->views())
+		view->setContextMenuPolicy((Qt::DefaultContextMenu));
+}
+
+/**
+	@brief DiagramEventAddPdf::mousePressEvent
+	Action when mouse is pressed
+	@param event event of mouse pressed
+*/
+void DiagramEventAddPdf::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+	if (m_image && event->button() == Qt::LeftButton)
+	{
+		QPointF pos = event->scenePos();
+		pos.rx() -= m_image->boundingRect().width()/2;
+		pos.ry() -= m_image->boundingRect().height()/2;
+		m_diagram->undoStack().push(new AddGraphicsObjectCommand(m_image, m_diagram, pos));
+
+		for (QGraphicsView *view : m_diagram->views()) {
+			view->setContextMenuPolicy((Qt::DefaultContextMenu));
+		}
+
+		m_running = false;
+		emit finish();
+		event->setAccepted(true);
+	}
+	else if (m_image && event->button() == Qt::RightButton)
+	{
+		m_image->setRotation(m_image->rotation() + 90);
+		event->setAccepted(true);
+	}
+}
+
+/**
+	@brief DiagramEventAddPdf::mouseMoveEvent
+	Action when mouse moves
+	@param event event of mouse move
+*/
+void DiagramEventAddPdf::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
+{
+	if (!m_image || event->buttons() != Qt::NoButton) {
+		return;
+	}
+
+	QPointF pos = event->scenePos();
+
+	if (!m_is_added)
+	{
+		for (QGraphicsView *view : m_diagram->views()) {
+			view->setContextMenuPolicy((Qt::NoContextMenu));
+		}
+
+		m_diagram->addItem(m_image);
+		m_is_added = true;
+	}
+
+	m_image->setPos(pos - m_image->boundingRect().center());
+	event->setAccepted(true);
+}
+
+/**
+	@brief DiagramEventAddPdf::mouseDoubleClickEvent
+	Overwrite double click to prevent opening properties dialog.
+	@param event event of mouse double click
+*/
+void DiagramEventAddPdf::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
+	event->setAccepted(true);
+}
+
+/**
+	@brief DiagramEventAddPdf::wheelEvent
+	Action when mouse wheel is rotated (CTRL+wheel to scale)
+	@param event event of mouse wheel
+*/
+void DiagramEventAddPdf::wheelEvent(QGraphicsSceneWheelEvent *event)
+{
+	if (!m_is_added || !m_image || event->modifiers() != Qt::CTRL) {
+		return;
+	}
+
+	qreal scaling = m_image->scale();
+	event->delta() > 1 ? scaling += 0.01 : scaling -= 0.01;
+	if (scaling > 0.01 && scaling <= 2) {
+		m_image->setScale(scaling);
+	}
+
+	event->setAccepted(true);
+}
+
+/**
+	@brief DiagramEventAddPdf::isNull
+	@return true if the PDF image couldn't be loaded, false otherwise
+*/
+bool DiagramEventAddPdf::isNull() const
+{
+	if (!m_image) return true;
+	return false;
+}
+
+/**
+	@brief DiagramEventAddPdf::openDialog
+	Opens a file dialog to select a PDF file, then opens a page selection
+	dialog with DPI options. The selected page is rendered to a QImage at
+	the chosen DPI and converted to a DiagramImageItem.
+*/
+void DiagramEventAddPdf::openDialog()
+{
+	if (m_diagram->isReadOnly()) return;
+
+	// Open file dialog to select a PDF file
+	QString pathPDFs = QETApp::documentDir();
+	QString fileName = QFileDialog::getOpenFileName(
+		m_diagram->views().isEmpty() ? nullptr : m_diagram->views().first(),
+		QObject::tr("Sélectionner un fichier PDF..."),
+		pathPDFs,
+		QObject::tr("Fichiers PDF (*.pdf)")
+	);
+
+	if (fileName.isEmpty()) return;
+
+	// Load the PDF document
+	QPdfDocument document;
+	document.load(fileName);
+
+	if (document.status() != QPdfDocument::Status::Ready)
+	{
+		QMessageBox::critical(
+			m_diagram->views().isEmpty() ? nullptr : m_diagram->views().first(),
+			QObject::tr("Erreur"),
+			QObject::tr("Impossible de charger le fichier PDF.")
+		);
+		return;
+	}
+
+	int pageCount = document.pageCount();
+	if (pageCount <= 0)
+	{
+		QMessageBox::critical(
+			m_diagram->views().isEmpty() ? nullptr : m_diagram->views().first(),
+			QObject::tr("Erreur"),
+			QObject::tr("Le fichier PDF ne contient aucune page.")
+		);
+		return;
+	}
+
+	// Always show the dialog so the user can choose page and DPI
+	PdfPagesDialog dialog(document,
+		m_diagram->views().isEmpty() ? nullptr : m_diagram->views().first());
+	if (dialog.exec() != QDialog::Accepted) return;
+	int pageIndex = dialog.selectedPage() - 1; // Convert to 0-based index
+	int dpi = dialog.selectedDpi();
+
+	// Calculate pixel size from PDF points at the user-selected DPI
+	// PDF point = 1/72 inch
+	QSizeF pageSize = document.pagePointSize(pageIndex);
+	int pixelWidth  = qRound((pageSize.width()  / 72.0) * dpi);
+	int pixelHeight = qRound((pageSize.height() / 72.0) * dpi);
+
+	if (pixelWidth <= 0 || pixelHeight <= 0)
+	{
+		QMessageBox::critical(
+			m_diagram->views().isEmpty() ? nullptr : m_diagram->views().first(),
+			QObject::tr("Erreur"),
+			QObject::tr("Impossible de déterminer la taille de la page PDF.")
+		);
+		return;
+	}
+
+	// Render PDF page to QImage
+	QImage image = document.render(pageIndex, QSize(pixelWidth, pixelHeight));
+	if (image.isNull())
+	{
+		QMessageBox::critical(
+			m_diagram->views().isEmpty() ? nullptr : m_diagram->views().first(),
+			QObject::tr("Erreur"),
+			QObject::tr("Impossible de rendre la page PDF.")
+		);
+		return;
+	}
+
+	// Fill white background to handle transparent PDFs
+	QImage background(image.size(), QImage::Format_ARGB32_Premultiplied);
+	background.fill(Qt::white);
+	QPainter painter(&background);
+	painter.drawImage(0, 0, image);
+	painter.end();
+
+	m_image = new DiagramImageItem(QPixmap::fromImage(background));
+	m_running = true;
+}
+
+#endif // QET_HAS_QTPDF
@@ -0,0 +1,61 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef DIAGRAMEVENTADDPDF_H
+#define DIAGRAMEVENTADDPDF_H
+
+// PDF page import needs the QtPdf module (QET_HAS_QTPDF, set by CMake
+// only when QtPdf is present AND Qt >= 6.4, for QPdfDocument::pagePointSize()).
+#ifdef QET_HAS_QTPDF
+
+#include "diagrameventinterface.h"
+
+class Diagram;
+class DiagramImageItem;
+
+/**
+	@brief The DiagramEventAddPdf class
+	This diagram event handles the adding of a PDF page as an image in a diagram.
+	The selected PDF page is rendered to a QImage at 150 DPI and added as a
+	DiagramImageItem. The placement, rotation and scaling behavior is identical
+	to the existing image import.
+*/
+class DiagramEventAddPdf : public DiagramEventInterface
+{
+	Q_OBJECT
+
+	public:
+		DiagramEventAddPdf(Diagram *diagram);
+		~DiagramEventAddPdf() override;
+
+		void mousePressEvent       (QGraphicsSceneMouseEvent *event) override;
+		void mouseMoveEvent        (QGraphicsSceneMouseEvent *event) override;
+		void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event) override;
+		void wheelEvent            (QGraphicsSceneWheelEvent *event) override;
+
+		bool isNull() const;
+
+	private:
+		void openDialog();
+
+		DiagramImageItem *m_image;
+		bool m_is_added;
+};
+
+#endif // QET_HAS_QTPDF
+
+#endif // DIAGRAMEVENTADDPDF_H
@@ -18,6 +18,7 @@
 #include "diagrameventaddshape.h"

 #include "../diagram.h"
+#include "../lastusedstyle.h"
 #include "../undocommand/addgraphicsobjectcommand.h"

 /**
@@ -77,6 +78,14 @@ void DiagramEventAddShape::mousePressEvent(QGraphicsSceneMouseEvent *event)
 		if (!m_shape_item)
 		{
 			m_shape_item = new QetShapeItem(pos, pos, m_shape_type);
+				//Start from whatever pen/brush was last applied this
+				//session, rather than always the hardcoded default.
+			if (LastUsedStyle::hasShapePen()) {
+				m_shape_item->setPen(LastUsedStyle::shapePen());
+			}
+			if (LastUsedStyle::hasShapeBrush()) {
+				m_shape_item->setBrush(LastUsedStyle::shapeBrush());
+			}
 			m_diagram->addItem (m_shape_item);
 			event->setAccepted(true);
 			return;
@@ -79,7 +79,7 @@ DiagramView::DiagramView(Diagram *diagram, QWidget *parent) :
 	m_diagram->loadCndFolioSeq();

 	m_paste_here = new QAction(QET::Icons::EditPaste, tr("Coller ici", "context menu action"), this);
-	connect(m_paste_here, SIGNAL(triggered()), this, SLOT(pasteHere()));
+	connect(m_paste_here, &QAction::triggered, this, &DiagramView::pasteHere);

 	m_multi_paste = new QAction(QET::Icons::EditPaste, tr("Collage multiple"), this);
 	connect(m_multi_paste, &QAction::triggered, [this]() {
@@ -89,7 +89,7 @@ DiagramView::DiagramView(Diagram *diagram, QWidget *parent) :

 	// Setup the action to create a template
 	m_create_template = new QAction(tr("Créer un template", "context menu action"), this);
-	connect(m_create_template, SIGNAL(triggered()), this, SLOT(createTemplateFromSelection()));
+	connect(m_create_template, &QAction::triggered, this, &DiagramView::createTemplateFromSelection);

 		//setup three separators, to be use in context menu
 	for(int i=0 ; i<3 ; ++i)
@@ -98,10 +98,10 @@ DiagramView::DiagramView(Diagram *diagram, QWidget *parent) :
 		m_separators.last()->setSeparator(true);
 	}

-	connect(m_diagram, SIGNAL(showDiagram(Diagram*)), this, SIGNAL(showDiagram(Diagram*)));
-	connect(m_diagram, SIGNAL(sceneRectChanged(QRectF)), this, SLOT(adjustSceneRect()));
-	connect(&(m_diagram -> border_and_titleblock), SIGNAL(diagramTitleChanged(const QString &)), this, SLOT(updateWindowTitle()));
-	connect(diagram, SIGNAL(findElementRequired(ElementsLocation)), this, SIGNAL(findElementRequired(ElementsLocation)));
+	connect(m_diagram, &Diagram::showDiagram, this, &DiagramView::showDiagram);
+	connect(m_diagram, &QGraphicsScene::sceneRectChanged, this, &DiagramView::adjustSceneRect);
+	connect(&(m_diagram -> border_and_titleblock), &BorderTitleBlock::informationChanged, this, &DiagramView::updateWindowTitle);
+	connect(diagram, &Diagram::findElementRequired, this, &DiagramView::findElementRequired);

 	QShortcut *edit_conductor_color_shortcut = new QShortcut(QKeySequence(Qt::Key_F2), this);
 	connect(edit_conductor_color_shortcut, &QShortcut::activated, [this]()
@@ -458,14 +458,7 @@ void DiagramView::mousePressEvent(QMouseEvent *e)
 	if (m_event_interface && m_event_interface->mousePressEvent(e)) return;

 		//Start drag view when hold the middle button
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (e->button() == Qt::MidButton)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	if (e->button() == Qt::MiddleButton)
-#endif
 	{
 		m_drag_last_pos = e->pos();
 		viewport()->setCursor(Qt::ClosedHandCursor);
@@ -515,14 +508,7 @@ void DiagramView::mouseMoveEvent(QMouseEvent *e)
 	if (m_event_interface && m_event_interface->mouseMoveEvent(e)) return;

 		// Drag the view
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (e->buttons() == Qt::MidButton)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	if (e->buttons() == Qt::MiddleButton)
-#endif
 	{
 		QScrollBar *h = horizontalScrollBar();
 		QScrollBar *v = verticalScrollBar();
@@ -583,14 +569,7 @@ void DiagramView::mouseReleaseEvent(QMouseEvent *e)
 	if (m_event_interface && m_event_interface->mouseReleaseEvent(e)) return;

 		// Stop drag view
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (e->button() == Qt::MidButton)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	if (e->button() == Qt::MiddleButton)
-#endif
 	{
 		viewport()->setCursor(Qt::ArrowCursor);
 	}
@@ -0,0 +1,269 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "dxfpaintdevice.h"
+#include "createdxf.h"
+
+#include <QPainterPath>
+#include <QTextItem>
+#include <QtMath>
+#include <QDebug>
+
+/**
+	@brief DxfPaintEngine::DxfPaintEngine
+	@param filepath path of the already-open DXF file entities are
+	appended to (see Createdxf::dxfBegin()/dxfEnd()).
+*/
+DxfPaintEngine::DxfPaintEngine(const QString &filepath) :
+	QPaintEngine(QPaintEngine::AllFeatures),
+	m_filepath(filepath)
+{
+}
+
+bool DxfPaintEngine::begin(QPaintDevice *pdev)
+{
+	Q_UNUSED(pdev)
+	setActive(true);
+	return true;
+}
+
+bool DxfPaintEngine::end()
+{
+	setActive(false);
+	return true;
+}
+
+/**
+	@brief DxfPaintEngine::updateState
+	Track the properties this engine cares about. Everything drawn is
+	mapped through the transform in effect at draw time - this is what
+	lets an item's paint() be replayed unmodified at whatever scene
+	position/rotation it actually has, exactly as QPainter does for
+	on-screen painting.
+*/
+void DxfPaintEngine::updateState(const QPaintEngineState &state)
+{
+	QPaintEngine::DirtyFlags flags = state.state();
+
+	if (flags & QPaintEngine::DirtyTransform)
+		m_world_transform = state.transform();
+	if (flags & QPaintEngine::DirtyPen)
+		m_pen = state.pen();
+	if (flags & QPaintEngine::DirtyBrush)
+		m_brush = state.brush();
+	if (flags & QPaintEngine::DirtyFont)
+		m_font = state.font();
+}
+
+QPointF DxfPaintEngine::toDxf(const QPointF &local_point) const
+{
+	// Createdxf's QRectF/QLineF/QPolygonF/QPointF convenience overloads
+	// each apply xScale/yScale and the sheetHeight Y-flip internally, so
+	// this engine's whole job is composing the world transform - not
+	// touching DXF units at all.
+	return m_world_transform.map(local_point);
+}
+
+void DxfPaintEngine::strokePolygon(const QPolygonF &poly, bool close)
+{
+	if (poly.size() < 2)
+		return;
+	if (m_pen.style() == Qt::NoPen)
+		return;
+
+	QPolygonF mapped;
+	mapped.reserve(poly.size());
+	for (const QPointF &p : poly)
+		mapped << toDxf(p);
+
+	if (close && mapped.first() != mapped.last())
+		mapped << mapped.first();
+
+	Createdxf::drawPolyline(m_filepath, mapped, Createdxf::dxfColor(m_pen));
+}
+
+void DxfPaintEngine::drawLines(const QLineF *lines, int lineCount)
+{
+	if (m_pen.style() == Qt::NoPen)
+		return;
+	for (int i = 0; i < lineCount; ++i)
+	{
+		QLineF mapped(toDxf(lines[i].p1()), toDxf(lines[i].p2()));
+		Createdxf::drawLine(m_filepath, mapped, Createdxf::dxfColor(m_pen));
+	}
+}
+
+void DxfPaintEngine::drawRects(const QRectF *rects, int rectCount)
+{
+	for (int i = 0; i < rectCount; ++i)
+	{
+		QPolygonF corners;
+		corners << rects[i].topLeft() << rects[i].topRight()
+				<< rects[i].bottomRight() << rects[i].bottomLeft();
+
+		// No HATCH support in v1 (see the design note in the header) - a
+		// filled rect is emitted as its outline only, same as an unfilled
+		// one. Still emitted (not skipped) when there's no pen but there
+		// is a brush, so a filled-only shape isn't dropped entirely.
+		if (m_pen.style() != Qt::NoPen || m_brush.style() != Qt::NoBrush)
+			strokePolygon(corners, true);
+	}
+}
+
+void DxfPaintEngine::drawEllipse(const QRectF &rect)
+{
+	if (m_pen.style() == Qt::NoPen && m_brush.style() == Qt::NoBrush)
+		return;
+
+	// A non axis-aligned ellipse (rotation baked into m_world_transform)
+	// can't be expressed as Createdxf::drawEllipse(), which only accepts
+	// an axis-aligned QRectF. Approximate with a flattened polygon in
+	// that case; use the exact CIRCLE/ELLIPSE entity when the transform
+	// is axis-aligned, matching what the existing hand-written exporters
+	// already produce for unrotated shapes.
+	const bool axis_aligned = qFuzzyIsNull(m_world_transform.m12())
+							&& qFuzzyIsNull(m_world_transform.m21());
+	if (axis_aligned)
+	{
+		QRectF mapped = m_world_transform.mapRect(rect);
+		Createdxf::drawEllipse(m_filepath, mapped, Createdxf::dxfColor(m_pen));
+		return;
+	}
+
+	QPainterPath path;
+	path.addEllipse(rect);
+	const auto polygons = path.toSubpathPolygons();
+	for (const QPolygonF &poly : polygons)
+		strokePolygon(poly, true);
+}
+
+/**
+	@brief DxfPaintEngine::drawPath
+	Handles drawArc()/drawPie() (QPainterPath::Arc elements - emitted as
+	chord segments, since Createdxf's ARC-equivalent
+	(drawArcEllipse()) only takes an axis-aligned ellipse + angle pair,
+	which doesn't compose with an arbitrary path transform) and
+	fillPath()/generic paths (flattened to polylines).
+*/
+void DxfPaintEngine::drawPath(const QPainterPath &path)
+{
+	if (m_pen.style() == Qt::NoPen && m_brush.style() == Qt::NoBrush)
+		return;
+
+	const auto polygons = path.toSubpathPolygons();
+	for (const QPolygonF &poly : polygons)
+		strokePolygon(poly, path.isEmpty() ? false : true);
+}
+
+void DxfPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
+{
+	if (pointCount < 2)
+		return;
+	QPolygonF poly;
+	poly.reserve(pointCount);
+	for (int i = 0; i < pointCount; ++i)
+		poly << points[i];
+
+	strokePolygon(poly, mode != PolylineMode);
+}
+
+void DxfPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
+{
+	qreal font_size = textItem.font().pointSizeF();
+	if (font_size < 0)
+		font_size = textItem.font().pixelSize();
+
+	// Rotation: extract the angle baked into the world transform by
+	// mapping a unit vector, the same approach used to compute rotation
+	// for the existing element-text DXF export in exportdialog.cpp.
+	QPointF origin = m_world_transform.map(p);
+	QPointF right  = m_world_transform.map(p + QPointF(1, 0));
+	qreal angle = qRadiansToDegrees(qAtan2(-(right.y() - origin.y()), right.x() - origin.x()));
+
+	Createdxf::drawText(m_filepath, textItem.text(), toDxf(p), font_size,
+						 angle, Createdxf::dxfColor(m_pen), 0.72);
+}
+
+/**
+	@brief DxfPaintEngine::drawPixmap
+	Not implemented in v1 - out of scope per the design note in the
+	header (CrossRefItem, the only item exported through this engine so
+	far, never draws a pixmap). qWarning() rather than a hard failure, so
+	an item that does call this in the future degrades to "one entity
+	missing" instead of crashing the whole export.
+*/
+void DxfPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
+{
+	Q_UNUSED(r)
+	Q_UNUSED(pm)
+	Q_UNUSED(sr)
+	qWarning() << "DxfPaintEngine::drawPixmap: not supported, entity skipped";
+}
+
+/**
+	@brief DxfPaintDevice::DxfPaintDevice
+	@param filepath path of the already-open DXF file (see
+	Createdxf::dxfBegin()/dxfEnd() - this device only appends entities in
+	between, it does not open/close the file itself).
+*/
+DxfPaintDevice::DxfPaintDevice(const QString &filepath) :
+	QPaintDevice(),
+	m_filepath(filepath),
+	m_engine(new DxfPaintEngine(filepath))
+{
+}
+
+DxfPaintDevice::~DxfPaintDevice()
+{
+	delete m_engine;
+}
+
+QPaintEngine *DxfPaintDevice::paintEngine() const
+{
+	return m_engine;
+}
+
+int DxfPaintDevice::metric(PaintDeviceMetric metric) const
+{
+	// A DXF document has no pixel grid or physical size in the sense
+	// QPaintDevice::metric() expects - large-but-finite values here are
+	// enough to keep QPainter's own bookkeeping (e.g. clip region setup)
+	// from misbehaving; nothing in this engine actually consults them.
+	switch (metric)
+	{
+		case PdmWidth:
+		case PdmHeight:
+			return 1000000;
+		case PdmDpiX:
+		case PdmDpiY:
+		case PdmPhysicalDpiX:
+		case PdmPhysicalDpiY:
+			return 96;
+		case PdmWidthMM:
+		case PdmHeightMM:
+			return 1000000;
+		case PdmNumColors:
+			return 16777216;
+		case PdmDepth:
+			return 24;
+		case PdmDevicePixelRatio:
+		case PdmDevicePixelRatioScaled:
+			return 1;
+		default:
+			return 0;
+	}
+}
@@ -0,0 +1,117 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef DXFPAINTDEVICE_H
+#define DXFPAINTDEVICE_H
+
+#include <QPaintDevice>
+#include <QPaintEngine>
+#include <QPen>
+#include <QBrush>
+#include <QFont>
+#include <QString>
+
+/**
+	@brief The DxfPaintEngine class
+	A QPaintEngine that translates the small set of QPainter calls made by
+	QGraphicsItem::paint() implementations (drawLines, drawRects,
+	drawEllipse, drawPolygon/drawPolyline, drawTextItem) into DXF entities
+	written through Createdxf, instead of pixels.
+
+	This exists so that an item's existing, already-correct paint() code
+	can be reused unmodified to produce a DXF export: construct a QPainter
+	on a DxfPaintDevice targeting the item, call painter.begin()/end()
+	around item->paint(&painter, ...), and every primitive the item draws
+	becomes a DXF entity at the item's scene position instead of a pixel
+	on screen.
+
+	Scope (deliberately not the full QPainter surface - only what
+	QElectroTech's own paint() implementations are observed to call):
+	  - drawLines      -> LINE
+	  - drawRects      -> LWPOLYLINE (closed 4-point outline; DXF has no
+	                       filled-rect primitive in the AC1006 dialect this
+	                       exporter targets, so brush fill is not emitted -
+	                       see fillPath below)
+	  - drawEllipse    -> Createdxf::drawArcEllipse (full sweep) or CIRCLE
+	  - drawPath       -> arcs (from QPainterPath::Arc elements, used by
+	                       drawArc/drawPie) become a sequence of LINE chords;
+	                       anything else in the path is flattened to
+	                       polyline segments via QPainterPath::toSubpathPolygons
+	  - drawPolygon    -> LWPOLYLINE
+	  - drawTextItem   -> TEXT (drawText() calls route through this)
+	  - fillPath       -> same outline-only handling as drawRects; no HATCH
+	                       support in v1 (see design note in the PR)
+
+	Anything outside this list (images, gradients, etc.) is intentionally
+	unimplemented and asserts in debug builds rather than silently
+	producing an incomplete drawing - callers should know immediately if
+	an item they're exporting uses something this engine doesn't cover
+	yet, rather than getting a DXF file quietly missing content.
+*/
+class DxfPaintEngine : public QPaintEngine
+{
+	public:
+		explicit DxfPaintEngine(const QString &filepath);
+
+		bool begin(QPaintDevice *pdev) override;
+		bool end() override;
+		void updateState(const QPaintEngineState &state) override;
+
+		void drawLines(const QLineF *lines, int lineCount) override;
+		void drawRects(const QRectF *rects, int rectCount) override;
+		void drawEllipse(const QRectF &rect) override;
+		void drawPath(const QPainterPath &path) override;
+		void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) override;
+		void drawTextItem(const QPointF &p, const QTextItem &textItem) override;
+		void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) override;
+
+		Type type() const override { return QPaintEngine::User; }
+
+	private:
+		QPointF toDxf(const QPointF &scene_point) const;
+		void strokePolygon(const QPolygonF &poly, bool close);
+
+		QString m_filepath;
+		QTransform m_world_transform;
+		QPen m_pen;
+		QBrush m_brush;
+		QFont m_font;
+};
+
+/**
+	@brief The DxfPaintDevice class
+	Pairs with DxfPaintEngine. One instance targets one already-open DXF
+	file (Createdxf::dxfBegin()/dxfEnd() bracket the whole export, same as
+	today - this device only ever appends entities in between).
+*/
+class DxfPaintDevice : public QPaintDevice
+{
+	public:
+		explicit DxfPaintDevice(const QString &filepath);
+		~DxfPaintDevice() override;
+
+		QPaintEngine *paintEngine() const override;
+
+	protected:
+		int metric(PaintDeviceMetric metric) const override;
+
+	private:
+		QString m_filepath;
+		DxfPaintEngine *m_engine;
+};
+
+#endif // DXFPAINTDEVICE_H
@@ -276,14 +276,7 @@ void ChangeZValueCommand::applyRaise(const QList<QGraphicsItem *> &items_list) {
 	for (int i = my_items_list.count() - 2 ; i >= 0 ; -- i) {
 		if (my_items_list[i] -> isSelected()) {
 			if (!my_items_list[i +1] -> isSelected()) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 13, 0)	// ### Qt 6: remove
-				my_items_list.swap(i, i + 1);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.13 or later")
-#endif
 				my_items_list.swapItemsAt(i, i + 1);
-#endif
 			}
 		}
 	}
@@ -301,14 +294,7 @@ void ChangeZValueCommand::applyLower(const QList<QGraphicsItem *> &items_list) {
 	for (int i = 1 ; i < my_items_list.count() ; ++ i) {
 		if (my_items_list[i] -> isSelected()) {
 			if (!my_items_list[i - 1] -> isSelected()) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 13, 0)	// ### Qt 6: remove
-				my_items_list.swap(i, i - 1);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.13 or later")
-#endif
 				my_items_list.swapItemsAt(i, i - 1);
-#endif
 			}
 		}
 	}
@@ -69,10 +69,8 @@ ElementScene::ElementScene(QETElementEditor *editor, QObject *parent) :
 	initPasteArea();
 	m_undo_stack.setClean();
 	m_decorator_lock = new QMutex();
-	connect(&m_undo_stack, SIGNAL(indexChanged(int)),
-		this, SLOT(managePrimitivesGroups()));
-	connect(this, SIGNAL(selectionChanged()),
-			this, SLOT(managePrimitivesGroups()));
+	connect(&m_undo_stack, &QUndoStack::indexChanged, this, &ElementScene::managePrimitivesGroups);
+	connect(this, &ElementScene::selectionChanged, this, &ElementScene::managePrimitivesGroups);
 }

 /**
@@ -102,8 +100,7 @@ void ElementScene::setElementData(ElementData data)
 ElementScene::~ElementScene()
 {
 	//Disconnect to avoid crash, see bug report N° 122.
-	disconnect(&m_undo_stack, SIGNAL(indexChanged(int)),
-		   this, SLOT(managePrimitivesGroups()));
+	disconnect(&m_undo_stack, &QUndoStack::indexChanged, this, &ElementScene::managePrimitivesGroups);
 	delete m_decorator_lock;

 	if (m_event_interface)
@@ -124,7 +121,7 @@ void ElementScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e)
 {
 	if (m_event_interface) {
 		if (m_event_interface -> mouseMoveEvent(e)) {
-			emit mouseMoved(e -> scenePos());
+			emit mouseMoved(snapToGrid(e->scenePos()));
 			if (m_event_interface->isFinish()) {
 				delete m_event_interface;
 				m_event_interface = nullptr;
@@ -907,8 +904,8 @@ void ElementScene::slot_editAuthorInformations()
 						   QDialogButtonBox::Ok
 						   | QDialogButtonBox::Cancel);
 	dialog_layout -> addWidget(dialog_buttons);
-	connect(dialog_buttons, SIGNAL(accepted()),&dialog_author, SLOT(accept()));
-	connect(dialog_buttons, SIGNAL(rejected()),&dialog_author, SLOT(reject()));
+	connect(dialog_buttons, &QDialogButtonBox::accepted, &dialog_author, &QDialog::accept);
+	connect(dialog_buttons, &QDialogButtonBox::rejected, &dialog_author, &QDialog::reject);

 	// start the dialogue
 	// lance le dialogue
@@ -1399,9 +1396,7 @@ void ElementScene::managePrimitivesGroups()
 	if (!m_decorator)
 	{
 		m_decorator = new ElementPrimitiveDecorator();
-		connect(m_decorator,
-			SIGNAL(actionFinished(ElementEditionCommand*)),
-			this, SLOT(stackAction(ElementEditionCommand *)));
+		connect(m_decorator, &ElementPrimitiveDecorator::actionFinished, this, &ElementScene::stackAction);
 		addItem(m_decorator);
 		m_decorator -> hide();
 	}
@@ -37,8 +37,8 @@ ElementView::ElementView(ElementScene *scene, QWidget *parent) :
 	setResizeAnchor(QGraphicsView::AnchorUnderMouse);
 	setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
 	zoomReset();
-	connect(m_scene, SIGNAL(pasteAreaDefined(const QRectF &)), this, SLOT(pasteAreaDefined(const QRectF &)));
-	connect(m_scene, SIGNAL(needZoomFit()), this, SLOT(zoomFit()));
+	connect(m_scene, &ElementScene::pasteAreaDefined, this, &ElementView::pasteAreaDefined);
+	connect(m_scene, &ElementScene::needZoomFit, this, &ElementView::zoomFit);	
 }

 /// Destructeur
@@ -372,14 +372,7 @@ ElementContent ElementView::pasteWithOffset(const QDomDocument &xml_document) {
 */
 void ElementView::mousePressEvent(QMouseEvent* e)
 {
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (e->button() == Qt::MidButton)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	if (e->button() == Qt::MiddleButton)
-#endif
 	{
 		setCursor( (Qt::ClosedHandCursor));
 		reference_view_ = e->pos();
@@ -394,14 +387,7 @@ void ElementView::mousePressEvent(QMouseEvent* e)
 */
 void ElementView::mouseMoveEvent(QMouseEvent* e)
 {
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (e->buttons() == Qt::MidButton)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	if (e->buttons() == Qt::MiddleButton)
-#endif
 	{
 		QScrollBar *h = horizontalScrollBar();
 		QScrollBar *v = verticalScrollBar();
@@ -420,14 +406,7 @@ void ElementView::mouseMoveEvent(QMouseEvent* e)
 */
 void ElementView::mouseReleaseEvent(QMouseEvent* e)
 {
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (e->button() == Qt::MidButton)
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	if (e->button() == Qt::MiddleButton)
-#endif
 	{
 		setCursor(Qt::ArrowCursor);
 		adjustSceneRect();
@@ -521,14 +521,7 @@ void CustomElementGraphicPart::stylesFromXml(const QDomElement &qde)
 	resetStyles();

 		//Get the list of pair style/value
-#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)	// ### Qt 6: remove
-	QStringList styles = qde.attribute("style").split(";", QString::SkipEmptyParts);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 5.14 or later")
-#endif
 	QStringList styles = qde.attribute("style").split(";", Qt::SkipEmptyParts);
-#endif

 		//Check each pair of style
 	QRegularExpression rx("^\\s*([a-z-]+)\\s*:\\s*([a-zA-Z-]+)\\s*$");
@@ -148,6 +148,7 @@ const QDomElement PartDynamicTextField::toXml(QDomDocument &dom_doc) const
 	root_element.setAttribute("frame", m_frame? "true" : "false");
 	root_element.setAttribute("text_width", QString::number(m_text_width));
 	root_element.setAttribute("keep_visual_rotation", m_keep_visual_rotation ? "true" : "false");
+	root_element.setAttribute("rotation_point_center", m_rotation_point_center ? "true" : "false");

 	QMetaEnum me = DynamicElementTextItem::textFromMetaEnum();
 	root_element.setAttribute("text_from", me.valueToKey(m_text_from));
@@ -212,6 +213,7 @@ void PartDynamicTextField::fromXml(const QDomElement &dom_elmt) {
 	setZValue(dom_elmt.attribute("z", QString::number(zValue())).toDouble());
 	QGraphicsObject::setRotation(QET::correctAngle(dom_elmt.attribute("rotation", QString::number(0)).toDouble()));
 	setKeepVisualRotation(dom_elmt.attribute("keep_visual_rotation", "true") == "true"? true : false);
+	setRotationPointCenter(dom_elmt.attribute("rotation_point_center", "false") == "true"? true : false);

 	if (dom_elmt.hasAttribute("font")) {
 		QFont font_;
@@ -492,6 +494,20 @@ bool PartDynamicTextField::keepVisualRotation() const {
 	return m_keep_visual_rotation;
 }

+void PartDynamicTextField::setRotationPointCenter(const bool &center)
+{
+	if (center == this->m_rotation_point_center) {
+		return;
+	}
+
+	m_rotation_point_center = center;
+	emit rotationPointCenterChanged(center);
+}
+
+bool PartDynamicTextField::rotationPointCenter() const {
+	return m_rotation_point_center;
+}
+
 /**
 	@brief PartDynamicTextField::mouseMoveEvent
 	@param event
@@ -44,6 +44,7 @@ class PartDynamicTextField : public QGraphicsTextItem, public CustomElementPart
 	Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)
 	Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)
 	Q_PROPERTY(bool keepVisualRotation READ keepVisualRotation WRITE setKeepVisualRotation NOTIFY keepVisualRotationChanged)
+	Q_PROPERTY(bool rotationPointCenter READ rotationPointCenter WRITE setRotationPointCenter NOTIFY rotationPointCenterChanged)

 	public:
 			///PROPERTY
@@ -62,6 +63,7 @@ class PartDynamicTextField : public QGraphicsTextItem, public CustomElementPart
 		void alignmentChanged(Qt::Alignment alignment);
 		void fontChanged(QFont font);
 		void keepVisualRotationChanged(bool keep);
+		void rotationPointCenterChanged(bool center);

 	public:
 		PartDynamicTextField(QETElementEditor *editor, QGraphicsItem *parent = nullptr);
@@ -100,6 +102,8 @@ class PartDynamicTextField : public QGraphicsTextItem, public CustomElementPart
 		void setFont(const QFont &font);
 		void setKeepVisualRotation(const bool &keep);
 		bool keepVisualRotation() const;
+		void setRotationPointCenter(const bool &center);
+		bool rotationPointCenter() const;

 		void setRotation(qreal angle);
 		void mirror();
@@ -129,7 +133,8 @@ class PartDynamicTextField : public QGraphicsTextItem, public CustomElementPart
 		bool m_frame = false,
 			 m_first_add = true,
 			 m_block_alignment = false,
-			 m_keep_visual_rotation = false;
+			 m_keep_visual_rotation = false,
+			 m_rotation_point_center = false;
 		qreal m_text_width = -1;
 		Qt::Alignment m_alignment = Qt::AlignTop|Qt::AlignLeft;
 		QRectF m_alignment_rect;
@@ -50,14 +50,14 @@ PartText::PartText(QETElementEditor *editor, QGraphicsItem *parent) :

 	adjustItemPosition(1);
 	// adjust textfield position after line additions/deletions
+	connect(document(), 
+		&QTextDocument::blockCountChanged, 
+		this, 
+		&PartText::adjustItemPosition);
 	connect(document(),
-		SIGNAL(blockCountChanged(int)),
+		&QTextDocument::contentsChanged,
 		this,
-		SLOT(adjustItemPosition(int)));
-	connect(document(),
-		SIGNAL(contentsChanged()),
-		this,
-		SLOT(adjustItemPosition()));
+		[this]() { adjustItemPosition(); });
 }

 /// Destructeur
@@ -440,6 +440,14 @@ void PartText::setFont(const QFont &font) {
 		// at a different spot after save/reopen (the position recomputes from
 		// the saved font on load). See #158.
 		adjustItemPosition();
+		// Keep real_font_size_ in sync with the actual font. It's the base
+		// size startUserTransformation()/handleUserTransformation() scale
+		// from when the user drags a resize handle, and flip() also reads it
+		// to reposition the item. Left stale here, either one computes from
+		// whatever size the item had when it was first created, ignoring any
+		// size set since (toolbar, property editor, or loaded from XML) -
+		// found investigating #158.
+		real_font_size_ = font.pointSize();
 		emit fontChanged(font);
 	}
 }
@@ -582,17 +582,25 @@ bool StyleEditor::isStyleEditable(QList<CustomElementPart *> cep_list)
 */
 void StyleEditor::activeConnections(bool active) {
 	if (active) {
-		connect (outline_color, SIGNAL(activated(int)),    this, SLOT(updatePartColor()));
-		connect(line_style,     SIGNAL(activated(int)),    this, SLOT(updatePartLineStyle()));
-		connect(size_weight,    SIGNAL(activated(int)),    this, SLOT(updatePartLineWeight()));
-		connect(filling_color,  SIGNAL(activated(int)),    this, SLOT(updatePartFilling()));
-		connect(antialiasing,   SIGNAL(stateChanged(int)), this, SLOT(updatePartAntialiasing()));
+		connect(outline_color, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartColor);
+		connect(line_style, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartLineStyle);
+		connect(size_weight, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartLineWeight);
+		connect(filling_color, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartFilling);
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0) // TODO Qt 6.7: remove, checkStateChanged() always available
+		connect(antialiasing, &QCheckBox::stateChanged, this, &StyleEditor::updatePartAntialiasing);
+#else
+		connect(antialiasing, &QCheckBox::checkStateChanged, this, &StyleEditor::updatePartAntialiasing);
+#endif
 	} else {
-		disconnect(outline_color, SIGNAL(activated(int)),    this, SLOT(updatePartColor()));
-		disconnect(line_style,    SIGNAL(activated(int)),    this, SLOT(updatePartLineStyle()));
-		disconnect(size_weight,   SIGNAL(activated(int)),    this, SLOT(updatePartLineWeight()));
-		disconnect(filling_color, SIGNAL(activated(int)),    this, SLOT(updatePartFilling()));
-		disconnect(antialiasing,  SIGNAL(stateChanged(int)), this, SLOT(updatePartAntialiasing()));
+		disconnect(outline_color, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartColor);
+		disconnect(line_style, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartLineStyle);
+		disconnect(size_weight, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartLineWeight);
+		disconnect(filling_color, qOverload<int>(&QComboBox::activated), this, &StyleEditor::updatePartFilling);
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0) // TODO Qt 6.7: remove, checkStateChanged() always available
+		disconnect(antialiasing, &QCheckBox::stateChanged, this, &StyleEditor::updatePartAntialiasing);
+#else
+		disconnect(antialiasing, &QCheckBox::checkStateChanged, this, &StyleEditor::updatePartAntialiasing);
+#endif
 	}
 }

--- a/Show More
+++ b/Show More