Fix signal for ComboBox

FIX broken signals in export-dialog

CMakeLists.txt

@@ -16,7 +16,7 @@
 
 include(cmake/hoto_update_cmake_message.cmake)
 
-cmake_minimum_required(VERSION 3.14...3.19 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.21.1 FATAL_ERROR)
 
 project(qelectrotech
   VERSION 0.9.0
@@ -27,6 +27,13 @@ project(qelectrotech
 include(cmake/copyright_message.cmake)
 
 set(QET_DIR ${PROJECT_SOURCE_DIR})
+include(cmake/qet_compilation_vars.cmake)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(Qt6 REQUIRED COMPONENTS ${QET_COMPONENTS})
+qt_standard_project_setup()
 
 # Add sub directories
 option(PACKAGE_TESTS "Build the tests" ON)
@@ -43,42 +50,17 @@ 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)
 
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
-set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
-set(CMAKE_AUTOUIC ON)
-
-SET(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
-find_package(
-  QT
- NAMES
-  Qt6
-  Qt5
- COMPONENTS
-  ${QET_COMPONENTS}
- REQUIRED
- )
-
-find_package(
-  Qt${QT_VERSION_MAJOR}
- COMPONENTS
- ${QET_COMPONENTS}
- REQUIRED)
 
 set(CMAKE_AUTOUIC_SEARCH_PATHS ${QET_DIR}/sources/ui)
-qt5_create_translation(QM_FILES ${CMAKE_SOURCE_DIR} ${TS_FILES})
-set_source_files_properties(${TS_FILES} PROPERTIES OUTPUT_LOCATION "${QET_DIR}/lang")
-qt5_add_translation(QM_FILES ${TS_FILES})
 
 # als laatse
 include(cmake/define_definitions.cmake)
 
-add_executable(
+qt_add_executable(
   ${PROJECT_NAME}
   ${QET_RES_FILES}
   ${QET_SRC_FILES}
@@ -86,13 +68,24 @@ add_executable(
   ${QET_DIR}/qelectrotech.qrc
   )
 
+if(QMFILES_AS_RESOURCE)
+  qt_add_translations(${PROJECT_NAME} TS_FILES ${TS_FILES} RESOURCE_PREFIX "/lang")
+else()
+  qt_create_translation(QM_FILES ${CMAKE_SOURCE_DIR} ${TS_FILES})
+  set_source_files_properties(${TS_FILES} PROPERTIES OUTPUT_LOCATION "${QET_DIR}/lang")
+  qt_add_translation(QM_FILES ${TS_FILES})
+endif()
+
+find_package(SQLite3 REQUIRED)
+
 target_link_libraries(
   ${PROJECT_NAME}
   PUBLIC
   PRIVATE
   pugixml::pugixml
   SingleApplication::SingleApplication
-  ${KF5_PRIVATE_LIBRARIES}
+  SQLite::SQLite3
+  ${KF6_PRIVATE_LIBRARIES}
   ${QET_PRIVATE_LIBRARIES}
   )
 
@@ -149,6 +142,7 @@ install(FILES LICENSE ELEMENTS.LICENSE CREDIT README ChangeLog DESTINATION share
 install(FILES misc/org.qelectrotech.qelectrotech.desktop DESTINATION share/applications)
 install(FILES misc/qelectrotech.xml DESTINATION share/mime/packages)
 install(FILES misc/qelectrotech.appdata.xml DESTINATION ${QET_APPDATA_PATH})
+if(NOT QMFILES_AS_RESOURCE)
   install(FILES ${QM_FILES} DESTINATION ${QET_LANG_PATH})
-
+endif()
 endif()

cmake/define_definitions.cmake

@@ -62,10 +62,15 @@ message("PROJECT_SOURCE_DIR        :" ${PROJECT_SOURCE_DIR})
 message("QET_DIR                   :" ${QET_DIR})
 message("GIT_COMMIT_SHA            :" ${GIT_COMMIT_SHA})
 
-if(BUILD_WITH_KF5)
+if(BUILD_WITH_KF6 AND BUILD_KF6)
-  message("KF5_GIT_TAG               :" ${KF5_GIT_TAG})
+  message("KF6_GIT_TAG               :" ${KF6_GIT_TAG})
-else()
+endif()
-  add_definitions(-DBUILD_WITHOUT_KF5)
+if(NOT BUILD_WITH_KF6)
+  add_definitions(-DBUILD_WITHOUT_KF6)
 endif()
 message("QET_COMPONENTS            :" ${QET_COMPONENTS})
-message("QT_VERSION_MAJOR          :" ${QT_VERSION_MAJOR})
+message("Qt version                :" ${Qt6_VERSION})
+
+if(QMFILES_AS_RESOURCE)
+  add_definitions(-DQMFILES_AS_RESOURCE)
+endif()

cmake/developer_options.cmake

@@ -31,5 +31,8 @@ add_definitions(-DQT_MESSAGELOGCONTEXT)
 # In order to do so, uncomment the following line.
 #add_definitions(-DTODO_LIST)
 
-# Build with KF5
+# Build with KF6
-option(BUILD_WITH_KF5 "Build with KF5" ON)
+option(BUILD_WITH_KF6 "Build with KF6" ON)
+
+# Use translations as a Qt resource
+option(QMFILES_AS_RESOURCE "Use .qm files as Qt resource" ON)

cmake/fetch_kdeaddons.cmake

@@ -14,54 +14,47 @@
 # You should have received a copy of the GNU General Public License
 # along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
 
-message(" - fetch_kdeaddons")
+message(STATUS "fetch_kdeaddons")
 
-if(DEFINED BUILD_WITH_KF5)
+if(BUILD_WITH_KF6)
+  option(BUILD_KF6 "Build KF6 libraries, use system ones otherwise" OFF)
+  block(PROPAGATE KF6_GIT_TAG)
+  set(BUILD_TESTING OFF)
+  set(KDE_SKIP_TEST_SETTINGS ON)
+  set(BUILD_DESIGNERPLUGIN OFF)
+  set(KCOREADDONS_USE_QML OFF)
+  set(BUILD_QCH OFF)
+  set(BUILD_SHARED_LIBS OFF)
+  find_package(ECM 6.8.0 REQUIRED NO_MODULE)
+  list(APPEND CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
+
+  if(BUILD_KF6)
     Include(FetchContent)
 
-  option(BUILD_KF5 "Build KF5 libraries, use system ones otherwise" YES)
+    if(NOT DEFINED KF6_GIT_TAG)
-
+      set(KF6_GIT_TAG v6.8.0)
-  if(BUILD_KF5)
-
-    if(NOT DEFINED KF5_GIT_TAG)
-      #https://qelectrotech.org/forum/viewtopic.php?pid=13924#p13924
-      set(KF5_GIT_TAG v5.77.0)
     endif()
 
-    # 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(
       kcoreaddons
       GIT_REPOSITORY https://invent.kde.org/frameworks/kcoreaddons.git
-      GIT_TAG        ${KF5_GIT_TAG})
+      GIT_TAG        ${KF6_GIT_TAG})
     FetchContent_MakeAvailable(kcoreaddons)
+    get_target_property(kca_version KF6::CoreAddons VERSION)
 
-    FetchContent_Declare(
-      kwidgetsaddons
-      GIT_REPOSITORY https://invent.kde.org/frameworks/kwidgetsaddons.git
-      GIT_TAG        ${KF5_GIT_TAG})
-    FetchContent_MakeAvailable(kwidgetsaddons)
   else()
-    find_package(KF5CoreAddons REQUIRED)
+    find_package(KF6CoreAddons REQUIRED)
-    find_package(KF5WidgetsAddons REQUIRED)
+    set(kca_version ${KF6CoreAddons_VERSION})
   endif()
 
-  set(KF5_PRIVATE_LIBRARIES
+  get_target_property(kwa_type KF6::CoreAddons TYPE)
-    KF5::WidgetsAddons
+
-    KF5::CoreAddons
+  message(NOTICE "ecm version            : " ${ECM_VERSION})
+  message(NOTICE "kcoreaddons library    : " ${kca_type})
+  message(NOTICE "kcoreaddons version    : " ${kca_version})
+  endblock()
+
+  set(KF6_PRIVATE_LIBRARIES
+    KF6::CoreAddons
     )
 endif()

cmake/fetch_pugixml.cmake

@@ -25,7 +25,7 @@ if(BUILD_PUGIXML)
   FetchContent_Declare(
     pugixml
     GIT_REPOSITORY https://github.com/zeux/pugixml.git
-    GIT_TAG        v1.11.4)
+    GIT_TAG        v1.14)
 
   FetchContent_MakeAvailable(pugixml)
 else()

cmake/fetch_singleapplication.cmake

@@ -26,6 +26,6 @@ Include(FetchContent)
 FetchContent_Declare(
   SingleApplication
   GIT_REPOSITORY https://github.com/itay-grudev/SingleApplication.git
-  GIT_TAG        v3.2.0)
+  GIT_TAG        v3.5.1)
 
 FetchContent_MakeAvailable(SingleApplication)

cmake/qet_compilation_vars.cmake

@@ -17,6 +17,8 @@
 message(" - qet_compilation_vars")
 
 set(QET_COMPONENTS
+  Core
+  Gui
   LinguistTools
   PrintSupport
   Xml
@@ -109,6 +111,12 @@ set(QET_SRC_FILES
   ${QET_DIR}/sources/borderproperties.h
   ${QET_DIR}/sources/bordertitleblock.cpp
   ${QET_DIR}/sources/bordertitleblock.h
+  ${QET_DIR}/sources/colorbutton.cpp
+  ${QET_DIR}/sources/colorbutton.h
+  ${QET_DIR}/sources/colorcombobox.cpp
+  ${QET_DIR}/sources/colorcombobox.h
+  ${QET_DIR}/sources/colorcomboboxdelegate.cpp
+  ${QET_DIR}/sources/colorcomboboxdelegate.h
   ${QET_DIR}/sources/conductorautonumerotation.cpp
   ${QET_DIR}/sources/conductorautonumerotation.h
   ${QET_DIR}/sources/conductornumexport.cpp
@@ -710,7 +718,6 @@ set(QET_SRC_FILES
 
 set(TS_FILES
   ${QET_DIR}/lang/qet_ar.ts
-  ${QET_DIR}/lang/qet_be.ts
   ${QET_DIR}/lang/qet_ca.ts
   ${QET_DIR}/lang/qet_cs.ts
   ${QET_DIR}/lang/qet_da.ts
@@ -727,6 +734,7 @@ set(TS_FILES
   ${QET_DIR}/lang/qet_mn.ts
   ${QET_DIR}/lang/qet_nb.ts
   ${QET_DIR}/lang/qet_nl.ts
+  ${QET_DIR}/lang/qet_nl_BE.ts
   ${QET_DIR}/lang/qet_no.ts
   ${QET_DIR}/lang/qet_pl.ts
   ${QET_DIR}/lang/qet_pt.ts

cmake/start_options.cmake

@@ -29,4 +29,4 @@ add_definitions(-DQET_ALLOW_OVERRIDE_CD_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
+add_definitions(-DQET_EXPORT_PROJECT_DB)

misc/MacQetDeploy_arm64.sh

@@ -294,7 +294,7 @@ echo
 echo "______________________________________________________________"
 echo "Re Create zip tarball:"
 
-/usr/bin/ditto -c -k --sequesterRsrc --keepParent $BUNDLE "build-aux/mac-osx/${APPNAME}-$VERSION-r$HEAD-arm64.zip"
+/usr/bin/ditto -c -k --keepParent $BUNDLE "build-aux/mac-osx/${APPNAME}-$VERSION-r$HEAD-arm64.zip"
 
 
 # Clean up disk folder

misc/org.qelectrotech.qelectrotech.desktop

@@ -10,37 +10,37 @@ MimeType=application/x-qet-project;application/x-qet-element;application/x-qet-t
 Categories=Graphics;Qt;VectorGraphics;Science;Electricity;Engineering;
 Keywords=Graphics;Science;Electricity;Engineering;
 Comment=Edit electrical diagrams.
-Comment[ar]=تحرير مخططات كهربائية
-Comment[be]=Bewerken elektrisch schema.
-Comment[ca]=Editar esquemes elèctrics.
-Comment[cs]=Editor výkresů elektrických obvodů
-Comment[da]=Rediger elektriske diagrammer.
 Comment[de]=Elektroschaltpläne erstellen und bearbeiten.
-Comment[el]=Επεξεργασία ηλεκτρικών διαγραμμάτων
-Comment[es]=Editar esquemas eléctricos
 Comment[fr]=Éditer des schémas électriques.
-Comment[hr]=Uredi elektro sheme
+Comment[ar]=تحرير مخططات كهربائية
-Comment[it]=Disegnare schemi elettrici
+Comment[es]=Editar esquemas eléctricos
-Comment[ja]=電気回路図の編集。
-Comment[nl]=Bewerken bedradingsdiagrammen.
-Comment[pl]=Edycja schematów elektrycznych
-Comment[pt]=Criar esquemas eléctricos.
 Comment[ru]=Создание и редактирование электрических схем.
+Comment[ca]=Editar esquemes elèctrics.
+Comment[pt]=Criar esquemas eléctricos.
+Comment[cs]=Editor výkresů elektrických obvodů
+Comment[pl]=Edycja schematów elektrycznych
+Comment[it]=Disegnare schemi elettrici
+Comment[hr]=Uredi elektro sheme
+Comment[el]=Επεξεργασία ηλεκτρικών διαγραμμάτων
+Comment[nl]=Bewerken bedradingsdiagrammen.
+Comment[be]=Bewerken elektrisch schema.
+Comment[da]=Rediger elektriske diagrammer.
+Comment[ja]=電気回路図の編集。
 Comment[sk]=Úprava elektrických schém.
 GenericName=Electrical diagram editor
-GenericName[ar]=مُحرّر مخططات كهربائية
-GenericName[be]=Elektrische schema editor
-GenericName[cs]=Editor výkresů elektrických obvodů
-GenericName[da]=Elektrisk diagram redigering
 GenericName[de]=Schaltplaneditor
-GenericName[el]=Επεξεργαστής ηλεκτρικών διαγραμμάτων
-GenericName[es]=Editor de esquemas eléctricos
 GenericName[fr]=Éditeur de schémas électriques
-GenericName[hr]=Editor elektro sheme
+GenericName[ar]=مُحرّر مخططات كهربائية
-GenericName[it]=Programma per disegnare schemi elettrici
+GenericName[es]=Editor de esquemas eléctricos
-GenericName[ja]=電気回路図エディタ
-GenericName[nl]=Elektrische schema editor
-GenericName[pl]=Edytor schematów elektrycznych
-GenericName[pt]=Editor de esquemas eléctricos.
 GenericName[ru]=Редактор электрических схем
+GenericName[pt]=Editor de esquemas eléctricos.
+GenericName[cs]=Editor výkresů elektrických obvodů
+GenericName[pl]=Edytor schematów elektrycznych
+GenericName[it]=Programma per disegnare schemi elettrici
+GenericName[hr]=Editor elektro sheme
+GenericName[el]=Επεξεργαστής ηλεκτρικών διαγραμμάτων
+GenericName[nl]=Elektrische schema editor
+GenericName[be]=Elektrische schema editor
+GenericName[da]=Elektrisk diagram redigering
+GenericName[ja]=電気回路図エディタ
 GenericName[sk]=Editor elektrických schém

sources/ElementsCollection/elementscollectionmodel.cpp

@@ -26,11 +26,8 @@
 #include "xmlprojectelementcollectionitem.h"
 
 #include <QFutureWatcher>
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) // ### Qt 6: remove
 #include <QtConcurrentMap>
-#else
+
-#include <QtConcurrentRun>
-#endif
 
 /**
 	@brief ElementsCollectionModel::ElementsCollectionModel
@@ -296,15 +293,9 @@ void ElementsCollectionModel::loadCollections(bool common_collection,
 		&QFutureWatcher<void>::finished,
 		watcher,
 		&QFutureWatcher<void>::deleteLater);
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) // ### Qt 6: remove
+
 	m_future = QtConcurrent::map(m_items_list_to_setUp, setUpData);
-#else
+
-#	if TODO_LIST
-#		pragma message("@TODO remove code for QT 6 or later")
-#	endif
-	qDebug() << "Help code for QT 6 or later"
-			 << "QtConcurrent::run its backwards now...function, object, args";
-#endif
 	watcher->setFuture(m_future);
 }
 

sources/ElementsCollection/elementscollectionwidget.cpp

@@ -765,7 +765,7 @@ void ElementsCollectionWidget::search()
 	}
 
 		//start the search when text have at least 3 letters.
-	if (text.count() < 3) {
+	if (text.length() < 3) {
 		return;
 	}
 

sources/ElementsCollection/elementslocation.cpp

@@ -805,15 +805,15 @@ bool ElementsLocation::setXml(const QDomDocument &xml_document) const
 			qDebug() << "Help code for QT 6 or later";
 
 			QString			   path_ = collectionPath(false);
-			QRegularExpression rx("^(.*)/(.*\\.elmt)$");
+			QRegularExpression rx(QRegularExpression::anchoredPattern("(.*)/(.*\\.elmt)"));
-
+			QRegularExpressionMatch match = rx.match(path_);
-			if (rx.exactMatch(path_))
+			if (match.hasMatch())
 			{
 				return project()
 					->embeddedElementCollection()
 					->addElementDefinition(
-						rx.cap(1),
+						match.captured(1),
-						rx.cap(2),
+						match.captured(2),
 						xml_document.documentElement());
 			}
 			else

sources/ElementsCollection/xmlelementcollection.cpp

@@ -46,64 +46,125 @@ XmlElementCollection::XmlElementCollection(QETProject *project) :
 	collection.appendChild(import);
 
 	NamesList names;
-	const QChar chinese_data[4] ={
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) // ### Qt 6: remove
-		QChar(0x5BFC), QChar(0x5165), QChar(0x5143), QChar(0x4EF6)};
+
-	const QChar greek_data[18] = {
-		QChar(0x0395), QChar(0x03b9), QChar(0x03c3), QChar(0x03b7),
-		QChar(0x03b3), QChar(0x03bc), QChar(0x03ad), QChar(0x03bd),
-		QChar(0x03b1), QChar(0x0020), QChar(0x03c3), QChar(0x03c4),
-		QChar(0x03bf), QChar(0x03b9), QChar(0x03c7), QChar(0x03b5),
-		QChar(0x03af), QChar(0x03b1)};
-	const QChar japanese_data[10] = {
-		QChar(0x30A4), QChar(0x30F3), QChar(0x30D0), QChar(0x30FC),
-		QChar(0x30C8), QChar(0x3055), QChar(0x308C), QChar(0x305F),
-		QChar(0x8981), QChar(0x7D20)};
 	const QChar russian_data[24] = {
-		QChar(0x0418), QChar(0x043C), QChar(0x043F), QChar(0x043E),
+		0x0418, 0x043C, 0x043F, 0x043E, 0x0440, 0x0442, 0x0438, 0x0440,
-		QChar(0x0440), QChar(0x0442), QChar(0x0438), QChar(0x0440),
+		0x043E, 0x0432, 0x0430, 0x043D, 0x043D, 0x044B, 0x0435, 0x0020,
-		QChar(0x043E), QChar(0x0432), QChar(0x0430), QChar(0x043D),
+		0x044D, 0x043B, 0x0435, 0x043C, 0x0435, 0x043D, 0x0442, 0x044B};
-		QChar(0x043D), QChar(0x044B), QChar(0x0435), QChar(0x0020),
+	const QChar greek_data[18] = {
-		QChar(0x044D), QChar(0x043B), QChar(0x0435), QChar(0x043C),
+		0x0395,
-		QChar(0x0435), QChar(0x043D), QChar(0x0442), QChar(0x044B)};
+		0x03b9,
+		0x03c3,
+		0x03b7,
+		0x03b3,
+		0x03bc,
+		0x03ad,
+		0x03bd,
+		0x03b1,
+		0x0020,
+		0x03c3,
+		0x03c4,
+		0x03bf,
+		0x03b9,
+		0x03c7,
+		0x03b5,
+		0x03af,
+		0x03b1};
 	const QChar turkish_data[12] = {
-		QChar(0x0130), QChar(0x0074), QChar(0x0068), QChar(0x0061),
+		0x0130,
-		QChar(0x006C), QChar(0x0020), QChar(0x00F6), QChar(0x011F),
+		0x0074,
-		QChar(0x0065), QChar(0x006C), QChar(0x0065), QChar(0x0072)};
+		0x0068,
+		0x0061,
+		0x006C,
+		0x0020,
+		0x00F6,
+		0x011F,
+		0x0065,
+		0x006C,
+		0x0065,
+		0x0072};
 	const QChar ukrainian_data[20] = {
-		QChar(0x0406), QChar(0x043c), QChar(0x043f), QChar(0x043e),
+		0x0406,
-		QChar(0x0440), QChar(0x0442), QChar(0x043e), QChar(0x0432),
+		0x043c,
-		QChar(0x0430), QChar(0x043d), QChar(0x0456), QChar(0x0020),
+		0x043f,
-		QChar(0x0435), QChar(0x043b), QChar(0x0435), QChar(0x043c),
+		0x043e,
-		QChar(0x0435), QChar(0x043d), QChar(0x0442), QChar(0x0438)};
+		0x0440,
+		0x0442,
+		0x043e,
+		0x0432,
+		0x0430,
+		0x043d,
+		0x0456,
+		0x0020,
+		0x0435,
+		0x043b,
+		0x0435,
+		0x043c,
+		0x0435,
+		0x043d,
+		0x0442,
+		0x0438};
+	const QChar japanese_data[10] = {
+		0x30A4,
+		0x30F3,
+		0x30D0,
+		0x30FC,
+		0x30C8,
+		0x3055,
+		0x308C,
+		0x305F,
+		0x8981,
+		0x7D20};
+
 	names.addName("ca",    "Elements importats");
 	names.addName("cs",    "Zavedené prvky");
 	names.addName("da",    "Importerede elementer");
-	names.addName("de",    "Importierte Elemente");
+	names.addName("de",    "Importierte elemente");
 	names.addName("el",    QString(greek_data, 18));
-	//names.addName("el",    "Εισηγμένα στοιχεία);
 	names.addName("en",    "Imported elements");
 	names.addName("es",    "Elementos importados");
 	names.addName("fr",    "Éléments importés");
 	names.addName("hr",    "Uvezeni elementi");
 	names.addName("it",    "Elementi importati");
 	names.addName("ja",    QString(japanese_data, 10));
-	//names.addName("ja",    "インバートされた要素");
-	names.addName("nl",    "Elementen geïmporteerd");
 	names.addName("nl_BE", "Elementen geïmporteerd");
+	names.addName("nl",    "Elementen geïmporteerd");
 	names.addName("pl",    "Elementy importowane");
-	names.addName("pt",    "Elementos importados");
+	names.addName("pt_BR", "elementos importados");
-	names.addName("pt_BR", "Elementos importados");
+	names.addName("pt",    "elementos importados");
 	names.addName("ro",    "Elemente importate");
 	names.addName("ru",    QString(russian_data, 24));
-	//names.addName("ru",    "Импортированные элементы");
 	names.addName("sl",    "Uvoženi elementi");
-	names.addName("sv",    "Importerade element");
 	names.addName("tr",    QString(turkish_data, 12));
-	//names.addName("tr",    "İthal öğeler");
 	names.addName("uk",    QString(ukrainian_data, 20));
-	//names.addName("uk",    "Імпортовані елементи");
+#else
-	names.addName("zh",    QString(chinese_data, 4));
+#	if TODO_LIST
-	//names.addName("zh",    "导入元件");
+#		pragma message("@TODO remove code for QT 6 or later")
+#	endif
+	qDebug() << "Help code for QT 6 or later";
+	names.addName("ca",    "Elements importats");
+	names.addName("cs",    "Zavedené prvky");
+	names.addName("da",    "Importerede elementer");
+	names.addName("de",    "Importierte elemente");
+	names.addName("el",    "Εισηγμένα στοιχεία");
+	names.addName("en",    "Imported elements");
+	names.addName("es",    "Elementos importados");
+	names.addName("fr",    "Éléments importés");
+	names.addName("hr",    "Uvezeni elementi");
+	names.addName("it",    "Elementi importati");
+	names.addName("ja",    "インバートされた要素");
+	names.addName("nl_BE", "Elementen geïmporteerd");
+	names.addName("nl",    "Elementen geïmporteerd");
+	names.addName("pl",    "Elementy importowane");
+	names.addName("pt_BR", "elementos importados");
+	names.addName("pt",    "elementos importados");
+	names.addName("ro",    "Elemente importate");
+	names.addName("ru",    "Импортированные элементы");
+	names.addName("sl",    "Uvoženi elementi");
+	names.addName("tr",    "İthal öğeler");
+	names.addName("uk",    "Імпортовані елементи");
+#endif
 
 	import.appendChild(names.toXml(m_dom_document));
 }

sources/TerminalStrip/GraphicsItem/terminalstripdrawer.cpp

@@ -17,6 +17,7 @@
 */
 #include "terminalstripdrawer.h"
 #include <QPainter>
+#include <QHash>
 
 namespace TerminalStripDrawer {
 
@@ -202,7 +203,7 @@ void TerminalStripDrawer::paint(QPainter *painter)
 		painter->restore();
 
 			//Draw the bridges
-		for (const auto &points_ : qAsConst(bridges_anchor_points))
+		for (const auto &points_ : std::as_const(bridges_anchor_points))
 		{
 			painter->save();
 			auto pen_{painter->pen()};

sources/TerminalStrip/UndoCommand/addterminaltostripcommand.cpp

@@ -126,7 +126,7 @@ void RemoveTerminalFromStripCommand::redo()
 	if (m_strip)
 	{
 		QVector<QSharedPointer<RealTerminal>> real_t;
-		for (const auto &real_t_vector : qAsConst(m_terminals)) {
+		for (const auto &real_t_vector : std::as_const(m_terminals)) {
 			real_t.append(real_t_vector);
 		}
 

sources/TerminalStrip/UndoCommand/groupterminalscommand.cpp

@@ -68,7 +68,7 @@ void UnGroupTerminalsCommand::undo()
 			m_terminal_strip->groupTerminals(key, m_physical_real_H.value(key));
 		}
 			//Second, set level.
-		for (const auto &pair : qAsConst(m_real_t_level)) {
+		for (const auto &pair : std::as_const(m_real_t_level)) {
 			m_terminal_strip->setLevel(pair.first, pair.second);
 		}
 	}
@@ -78,7 +78,7 @@ void UnGroupTerminalsCommand::redo()
 {
 	if (m_terminal_strip)
 	{
-		for (const auto &value : qAsConst(m_physical_real_H)) {
+		for (const auto &value : std::as_const(m_physical_real_H)) {
 			m_terminal_strip->unGroupTerminals(value);
 		}
 	}

sources/TerminalStrip/physicalterminal.cpp

@@ -131,7 +131,7 @@ bool PhysicalTerminal::setLevelOf(const QSharedPointer<RealTerminal> &terminal,
 	if (i >= 0)
 	{
 #if QT_VERSION >= QT_VERSION_CHECK(5,14,0)
-		m_real_terminal.swapItemsAt(i, std::min(level, m_real_terminal.size()-1));
+		m_real_terminal.swapItemsAt(i, std::min((qsizetype)level, 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]);

sources/TerminalStrip/terminalstrip.cpp

@@ -466,7 +466,7 @@ QSharedPointer<RealTerminal> TerminalStrip::realTerminalForUuid(const QUuid &uui
 QVector<QSharedPointer<RealTerminal>> TerminalStrip::realTerminals() const
 {
 	QVector<QSharedPointer<RealTerminal>> vector_;
-	for (const auto &phy : qAsConst(m_physical_terminals)) {
+	for (const auto &phy : std::as_const(m_physical_terminals)) {
 		vector_.append(phy->realTerminals());
 	}
 	return vector_;
@@ -639,7 +639,7 @@ bool TerminalStrip::isBridgeable(const QVector<QSharedPointer<RealTerminal>> &re
 		// Get the physical terminal and pos
 	auto first_physical_terminal = first_real_terminal->physicalTerminal();
 	QVector<shared_physical_terminal> physical_vector{first_physical_terminal};
-	QVector<int> pos_vector{m_physical_terminals.indexOf(first_physical_terminal)};
+	QVector<qsizetype> pos_vector{m_physical_terminals.indexOf(first_physical_terminal)};
 
 	auto bridge_ = isBridged(first_real_terminal);
 		//bool to know at the end of this function if at least one terminal is not bridged
@@ -856,7 +856,7 @@ QSharedPointer<TerminalStripBridge> TerminalStrip::isBridged(const QSharedPointe
 {
 	if (real_terminal)
 	{
-		for (const auto &bridge_ : qAsConst(m_bridge)) {
+		for (const auto &bridge_ : std::as_const(m_bridge)) {
 			if (bridge_->realTerminals().contains(real_terminal))
 				return bridge_;
 		}
@@ -983,7 +983,7 @@ QDomElement TerminalStrip::toXml(QDomDocument &parent_document)
 	}
 	root_elmt.appendChild(xml_layout);
 
-	for (const auto &bridge_ : qAsConst(m_bridge)) {
+	for (const auto &bridge_ : std::as_const(m_bridge)) {
 		root_elmt.appendChild(bridge_->toXml(parent_document));
 	}
 
@@ -1024,7 +1024,7 @@ bool TerminalStrip::fromXml(QDomElement &xml_element)
 			for (auto &xml_real : QETXML::findInDomElement(xml_physical, RealTerminal::xmlTagName()))
 			{
 				const auto uuid_ = QUuid(xml_real.attribute(QStringLiteral("element_uuid")));
-				for (auto terminal_elmt : qAsConst(free_terminals))
+				for (auto terminal_elmt : std::as_const(free_terminals))
 				{
 					if (terminal_elmt->uuid() == uuid_)
 					{

sources/TerminalStrip/terminalstripbridge.cpp

@@ -85,7 +85,7 @@ QDomElement TerminalStripBridge::toXml(QDomDocument &parent_document) const
 	root_elmt.setAttribute(QStringLiteral("color"), m_color.name());
 
 	auto terminals_elmt = parent_document.createElement(QStringLiteral("real_terminals"));
-	for (const auto &real_t : qAsConst(m_real_terminals))
+	for (const auto &real_t : std::as_const(m_real_terminals))
 	{
 		if (real_t)
 		{
@@ -106,7 +106,7 @@ void TerminalStripBridge::fromXml(const QDomElement &dom_element)
 	}
 
 	m_uuid = QUuid(dom_element.attribute(QStringLiteral("uuid"), m_uuid.toString()));
-	m_color.setNamedColor(dom_element.attribute(QStringLiteral("color")));
+	m_color = QColor::fromString(dom_element.attribute(QStringLiteral("color")));
 
 	const auto real_t_vector = QETXML::subChild(dom_element,
 										 QStringLiteral("real_terminals"),

sources/TerminalStrip/ui/terminalstripeditor.ui

@@ -69,7 +69,7 @@
            </widget>
           </item>
           <item row="12" column="1" colspan="2">
-           <widget class="KColorCombo" name="m_bridge_color_cb"/>
+           <widget class="ColorComboBox" name="m_bridge_color_cb"/>
           </item>
           <item row="5" column="0">
            <widget class="QLabel" name="label_6">
@@ -323,9 +323,9 @@
  </widget>
  <customwidgets>
   <customwidget>
-   <class>KColorCombo</class>
+   <class>ColorComboBox</class>
    <extends>QComboBox</extends>
-   <header>kcolorcombo.h</header>
+   <header>../../colorcombobox.h</header>
   </customwidget>
  </customwidgets>
  <resources>

sources/TerminalStrip/ui/terminalstripmodel.cpp

@@ -535,7 +535,7 @@ modelRealTerminalData TerminalStripModel::dataAtRow(int row) const
 	else
 	{
 		auto current_row = 0;
-		for (const auto &physical_data : qAsConst(m_physical_data))
+		for (const auto &physical_data : std::as_const(m_physical_data))
 		{
 			for (const auto &real_data : physical_data.real_data)
 			{
@@ -567,7 +567,7 @@ void TerminalStripModel::replaceDataAtRow(modelRealTerminalData data, int row)
 		auto current_row = 0;
 		auto current_physical = 0;
 
-		for (const auto &physical_data : qAsConst(m_physical_data))
+		for (const auto &physical_data : std::as_const(m_physical_data))
 		{
 			auto current_real = 0;
 			for (int i=0 ; i<physical_data.real_data.count() ; ++i)
@@ -606,7 +606,7 @@ modelPhysicalTerminalData TerminalStripModel::physicalDataAtIndex(int index) con
 	int current_phy = -1;
 	bool match_ = false;
 
-	for (const auto &ptd_ : qAsConst(m_physical_data))
+	for (const auto &ptd_ : std::as_const(m_physical_data))
 	{
 		current_checked_index += ptd_.real_data.size();
 		++current_phy;
@@ -637,9 +637,9 @@ modelRealTerminalData TerminalStripModel::realDataAtIndex(int index) const
 
 	int current_checked_index = -1;
 
-	for (const auto & ptd_ : qAsConst(m_physical_data))
+	for (const auto & ptd_ : std::as_const(m_physical_data))
 	{
-		for (const auto & rtd_ : qAsConst(ptd_.real_data)) {
+		for (const auto & rtd_ : std::as_const(ptd_.real_data)) {
 			++current_checked_index;
 			if (current_checked_index == index) {
 				return rtd_;

sources/TerminalStrip/ui/terminalstripmodel.h

@@ -29,12 +29,12 @@
 #include "modelTerminalData.h"
 
 //Code to use QColor as key for QHash
-inline uint qHash(const QColor &key, uint seed) {
+inline size_t qHash(const QColor &key, size_t seed) {
 	return qHash(key.name(), seed);
 }
 
 //needed to use QPointer<Element> as key of QHash
-inline uint qHash(const QPointer<Element> &key, uint seed) {
+inline size_t qHash(const QPointer<Element> &key, size_t seed) {
 	if (key)
 		return qHash(key->uuid(), seed);
 	else

sources/TerminalStrip/ui/terminalstriptreedockwidget.cpp

@@ -60,7 +60,7 @@ void TerminalStripTreeDockWidget::reload()
 	m_uuid_terminal_H.clear();
 	m_uuid_strip_H.clear();
 
-	for (const auto &connection_ : qAsConst(m_strip_changed_connection)) {
+	for (const auto &connection_ : std::as_const(m_strip_changed_connection)) {
 		disconnect(connection_);
 	}
 	m_strip_changed_connection.clear();
@@ -222,7 +222,7 @@ void TerminalStripTreeDockWidget::buildTree()
 		return a->name() < b->name();
 	});
 
-	for (const auto &ts : qAsConst(ts_vector)) {
+	for (const auto &ts : std::as_const(ts_vector)) {
 		addTerminalStrip(ts);
 	}
 	addFreeTerminal();
@@ -324,7 +324,7 @@ void TerminalStripTreeDockWidget::addFreeTerminal()
 
 	auto free_terminal_item = ui->m_tree_view->topLevelItem(1);
 
-	for (const auto terminal : qAsConst(vector_))
+	for (const auto terminal : std::as_const(vector_))
 	{
 		QUuid uuid_ = terminal->uuid();
 		QStringList strl{terminal->actualLabel()};

sources/autoNum/assignvariables.cpp

@@ -656,7 +656,7 @@ namespace autonum
 			dirLevel = 0;
 		}
 
-		// Create Custom labels if qet_labels.xml exits in customElementsDir
+		// Create Custom labels if qet_labels.xml if exit in customElementsDir
 		if (current_location.fileName() != "10_electric"){
 		QString custom_labels = "qet_labels.xml";
 		QString customfilepath = QETApp::customElementsDir().append(custom_labels);

sources/autoNum/numerotationcontext.cpp

@@ -57,9 +57,9 @@ bool NumerotationContext::addValue(const QString &type,
 				   const QVariant &value,
 				   const int increase,
 				   const int initialvalue) {
-	if (!keyIsAcceptable(type) && !value.canConvert(QVariant::String))
+	if (!keyIsAcceptable(type) && !value.canConvert<QString>())
 		return false;
-	if (keyIsNumber(type) && !value.canConvert(QVariant::Int))
+	if (keyIsNumber(type) && !value.canConvert<int>())
 		return false;
 
 	QString valuestr = value.toString();

sources/bordertitleblock.cpp

@@ -55,11 +55,8 @@ BorderTitleBlock::BorderTitleBlock(QObject *parent) :
 	m_titleblock_template_renderer = new TitleBlockTemplateRenderer(this);
 	m_titleblock_template_renderer -> setTitleBlockTemplate(QETApp::defaultTitleBlockTemplate());
 
-	// disable the QPicture-based cache from Qt 4.8 to avoid rendering errors and crashes
+	// disable the QPicture-based cache to avoid rendering errors and crashes
-#if QT_VERSION < QT_VERSION_CHECK(4, 8, 0)	// ### Qt 6: remove
-#else
 	m_titleblock_template_renderer -> setUseCache(false);
-#endif
 
 	// dimensions par defaut du schema
 	importBorder(BorderProperties());
@@ -239,6 +236,7 @@ void BorderTitleBlock::borderToXml(QDomElement &xml_elmt) {
 	xml_elmt.setAttribute("displayrows", rowsAreDisplayed() ? "true" : "false");
 
 	// attribut datant de la version 0.1 - laisse pour retrocompatibilite
+	// attribute from version 0.1 - leave for backwards-compatibility
 	xml_elmt.setAttribute("height",      QString("%1").arg(diagramHeight()));
 }
 
@@ -949,7 +947,7 @@ QString BorderTitleBlock::incrementLetters(const QString &string) {
 			last_digit = (char)(string[string.length()-1].unicode()) + 1;
 			return(first_digits + QString(last_digit));
 		} else {
-			return(incrementLetters(first_digits) + "A");
+			return(incrementLetters(first_digits) % "A");
 		}
 	}
 }

sources/colorbutton.cpp

@@ -0,0 +1,90 @@
+/*
+	Copyright 2006-2025 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 "colorbutton.h"
+
+#include <QColorDialog>
+#include <QPainter>
+
+/**
+	@brief ColorButton::ColorButton
+	Simple constructor
+	@param parent QObject parent of the ColorButton
+*/
+ColorButton::ColorButton(QWidget *parent) : QPushButton(parent)
+{
+	connect(this, &QPushButton::clicked, this, &ColorButton::clicked);
+}
+
+/**
+	@brief Getter for current color
+	@return The current selected color
+*/
+const QColor ColorButton::color()
+{
+	return m_color;
+}
+
+/**
+	@brief Setter for current color
+*/
+void ColorButton::setColor(const QColor &color)
+{
+    m_color = color;
+	update();
+}
+
+/**
+	@brief ColorButton::clicked
+	Opens a color selection dialog and lets the user select a color.
+	@param checked Not used
+*/
+void ColorButton::clicked(bool checked)
+{
+	// Open color selection dialog
+	auto new_color = QColorDialog::getColor(m_color, this, tr("Select color"), QColorDialog::DontUseNativeDialog);
+
+	// Validate user input
+	if (new_color.isValid()) {
+		m_color = new_color;
+		emit changed(new_color);
+		update();
+	}
+}
+
+/**
+	@brief ColorButton::paintEvent
+	Paints a filled rectangle with the current selected color on the button surface.
+	@param e Paint event context
+*/
+void ColorButton::paintEvent(QPaintEvent *e) {
+	QPushButton::paintEvent(e);
+
+	// Padding for the color indicator
+	const int padding_x = 5;
+	const int padding_y = 5;
+
+	QPainter painter(this);
+
+	// Get dimensions of the button paint surface
+	auto r_width = painter.device()->width();
+	auto r_height = painter.device()->height();
+
+	// Paint a rectangle with a margin of 5
+	auto color_indicator = QRect(padding_x, padding_y, r_width - padding_x * 2, r_height - padding_y * 2);
+	painter.fillRect(color_indicator, m_color);
+}

sources/colorbutton.h

@@ -0,0 +1,53 @@
+/*
+	Copyright 2006-2025 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 COLORBUTTON_H
+#define COLORBUTTON_H
+
+#include <QColor>
+#include <QObject>
+#include <QPushButton>
+#include <Qt>
+
+/**
+	@brief The ColorButton class
+*/
+class ColorButton : public QPushButton
+{
+	    Q_OBJECT
+
+	public:
+    	ColorButton(QWidget * = nullptr);
+
+		const QColor color();
+		void setColor(const QColor &);
+
+	public slots:
+		void clicked(bool = false);
+
+	protected:
+		void paintEvent(QPaintEvent *) override;
+
+	signals:
+		void changed(const QColor &);
+
+	private:
+    	/// @brief Current selected color
+    	QColor m_color = Qt::black;
+};
+
+#endif

sources/colorcombobox.cpp

@@ -0,0 +1,98 @@
+/*
+	Copyright 2006-2025 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 "colorcombobox.h"
+
+#include "colorcomboboxdelegate.h"
+
+#include <QColorDialog>
+#include <QPainter>
+#include <QStylePainter>
+#include <Qt>
+
+
+/**
+	@brief ColorComboBox::ColorComboBox
+	Simple constructor
+	@param parent QObject parent of the ColorComboBox
+*/
+ColorComboBox::ColorComboBox(QWidget *parent) : QComboBox(parent)
+{
+	connect(this, &QComboBox::activated, this, &ColorComboBox::colorSelected);
+	setItemDelegate(new ColorComboBoxDelegate());
+}
+
+/**
+	@brief ColorComboBox::setColors
+	Sets the colors of the combo box. An item at the top will be added to allow selection
+	of a custom color.
+	@param colors Vector of colors to add to the combo box
+*/
+void ColorComboBox::setColors(const QVector<QColor> &colors)
+{
+	addItem(tr("[Custom color...]"), QColor(Qt::black));
+	for(auto &color : colors) {
+		addItem(color.name(), color);
+	}
+}
+
+/**
+	@brief ColorComboBox::colorSelected
+	Opens a color selection dialog and lets the user select a color.
+	@param checked Not used
+*/
+void ColorComboBox::colorSelected(int index)
+{
+	if (index == 0) {
+		// Open color selection dialog if custom color is selected
+		auto new_color = QColorDialog::getColor(itemData(index).value<QColor>(), this, tr("Select color"), QColorDialog::DontUseNativeDialog);
+
+		// Validate and emit user input color
+		if (new_color.isValid()) {
+			setItemData(index, new_color);
+			emit activated(new_color);
+		}
+	} else {
+		// Emit color from selected combo box row
+		emit activated(itemData(index).value<QColor>());
+	}
+}
+
+/**
+	@brief ColorComboBox::paintEvent
+	Paints a filled rectangle with the current selected color on the combo box surface.
+	@param e Paint event context
+*/
+void ColorComboBox::paintEvent(QPaintEvent *e) {
+	// Padding for the color indicator
+	const int padding_x = 5;
+	const int padding_y = 5;
+
+	// Create painter and draw a vanilla combobox
+	QStylePainter painter(this);
+	QStyleOptionComboBox opt;
+    initStyleOption(&opt);
+	painter.drawComplexControl(QStyle::CC_ComboBox, opt);
+    
+	// Get dimensions of the combo box paint surface
+	auto r_width = painter.device()->width();
+	auto r_height = painter.device()->height();
+
+	// Paint a rectangle with a margin
+	auto color_indicator = QRect(padding_x, padding_y, r_width - padding_x * 2, r_height - padding_y * 2);
+	painter.fillRect(color_indicator, itemData(currentIndex()).value<QColor>());
+}

sources/colorcombobox.h

@@ -0,0 +1,49 @@
+/*
+	Copyright 2006-2025 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 COLORCOMBOBOX_H
+#define COLORCOMBOBOX_H
+
+#include <QColor>
+#include <QObject>
+#include <QComboBox>
+#include <QVector>
+#include <Qt>
+
+/**
+	@brief The ColorComboBox class
+*/
+class ColorComboBox : public QComboBox
+{
+	    Q_OBJECT
+
+	public:
+    	ColorComboBox(QWidget * = nullptr);
+
+		void setColors(const QVector<QColor> &);
+
+	public slots:
+		void colorSelected(int);
+
+	protected:
+		void paintEvent(QPaintEvent *) override;
+
+	signals:
+		void activated(const QColor &);
+};
+
+#endif

sources/colorcomboboxdelegate.cpp

@@ -0,0 +1,62 @@
+/*
+	Copyright 2006-2025 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 "colorcomboboxdelegate.h"
+
+#include <QColor>
+#include <QPainter>
+#include <QPalette>
+#include <QtDebug>
+
+/**
+	@brief ColorComboBoxDelegate::paint
+	Paints a filled rectangle on the drop down item with the items color.
+	@param painter Painter context
+	@param option Style options
+	@param index Index of the item to paint
+
+ */
+void ColorComboBoxDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+	// Padding for the color indicator
+	const int padding_x = 5;
+	const int padding_y = 2;
+
+	painter->save();
+
+	if (index.row() > 0)
+	{
+		auto rect = option.rect;
+
+		// Draw mouseover background
+		if (option.state & QStyle::State_MouseOver)
+		{
+			auto pal = option.widget->palette();
+			painter->fillRect(rect, pal.color(QPalette::Highlight));
+		}
+
+		// Draw color indicator rectangle
+		auto color = qvariant_cast<QColor>(index.data());
+		rect.adjust(padding_x, padding_y, -padding_x, -padding_y);
+		painter->fillRect(rect, color);
+	} else {
+		// Draw a normal drop down item for custom color
+		QStyledItemDelegate::paint(painter, option, index);
+	}
+
+	painter->restore();
+}

sources/colorcomboboxdelegate.h

@@ -0,0 +1,35 @@
+/*
+	Copyright 2006-2025 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 COLORCOMBOBOXDELEGATE_H
+#define COLORCOMBOBOXDELEGATE_H
+
+#include <QStyledItemDelegate>
+
+/**
+	@brief The ColorComboBoxDelegate class
+	Handles drawing of items in the drop down list of ColorComboBox.
+*/
+class ColorComboBoxDelegate : public QStyledItemDelegate
+{
+		Q_OBJECT
+
+	public:
+		void paint(QPainter *, const QStyleOptionViewItem &, const QModelIndex &) const override;
+};
+
+#endif

sources/conductornumexport.cpp

@@ -72,14 +72,7 @@ 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;

sources/conductorproperties.cpp

@@ -376,31 +376,31 @@ void ConductorProperties::fromXml(QDomElement &e)
 */
 void ConductorProperties::toSettings(QSettings &settings, const QString &prefix) const
 {
-	settings.setValue(prefix + "color", color.name());
+	settings.setValue(prefix % "color", color.name());
-	settings.setValue(prefix + "bicolor", m_bicolor);
+	settings.setValue(prefix % "bicolor", m_bicolor);
-	settings.setValue(prefix + "color2", m_color_2.name());
+	settings.setValue(prefix % "color2", m_color_2.name());
-	settings.setValue(prefix + "dash-size", m_dash_size);
+	settings.setValue(prefix % "dash-size", m_dash_size);
-	settings.setValue(prefix + "style", writeStyle());
+	settings.setValue(prefix % "style", writeStyle());
-	settings.setValue(prefix + "type", typeToString(type));
+	settings.setValue(prefix % "type", typeToString(type));
-	settings.setValue(prefix + "text", text);
+	settings.setValue(prefix % "text", text);
-	settings.setValue(prefix + "text_color", text_color.name());
+	settings.setValue(prefix % "text_color", text_color.name());
-	settings.setValue(prefix + "formula", m_formula);
+	settings.setValue(prefix % "formula", m_formula);
-	settings.setValue(prefix + "cable", m_cable);
+	settings.setValue(prefix % "cable", m_cable);
-	settings.setValue(prefix + "bus", m_bus);
+	settings.setValue(prefix % "bus", m_bus);
-	settings.setValue(prefix + "function", m_function);
+	settings.setValue(prefix % "function", m_function);
-	settings.setValue(prefix + "tension_protocol", m_tension_protocol);
+	settings.setValue(prefix % "tension_protocol", m_tension_protocol);
-	settings.setValue(prefix + "conductor_color", m_wire_color);
+	settings.setValue(prefix % "conductor_color", m_wire_color);
-	settings.setValue(prefix + "conductor_section", m_wire_section);
+	settings.setValue(prefix % "conductor_section", m_wire_section);
-	settings.setValue(prefix + "textsize", QString::number(text_size));
+	settings.setValue(prefix % "textsize", QString::number(text_size));
-	settings.setValue(prefix + "size", QString::number(cond_size));
+	settings.setValue(prefix % "size", QString::number(cond_size));
-	settings.setValue(prefix + "displaytext", m_show_text);
+	settings.setValue(prefix % "displaytext", m_show_text);
-	settings.setValue(prefix + "onetextperfolio", m_one_text_per_folio);
+	settings.setValue(prefix % "onetextperfolio", m_one_text_per_folio);
-	settings.setValue(prefix + "vertirotatetext", QString::number(verti_rotate_text));
+	settings.setValue(prefix % "vertirotatetext", QString::number(verti_rotate_text));
-	settings.setValue(prefix + "horizrotatetext", QString::number(horiz_rotate_text));
+	settings.setValue(prefix % "horizrotatetext", QString::number(horiz_rotate_text));
 
 	QMetaEnum me = QMetaEnum::fromType<Qt::Alignment>();
-	settings.setValue(prefix + "horizontal-alignment", me.valueToKey(m_horizontal_alignment));
+	settings.setValue(prefix % "horizontal-alignment", me.valueToKey(m_horizontal_alignment));
-	settings.setValue(prefix + "vertical-alignment", me.valueToKey(m_vertical_alignment));
+	settings.setValue(prefix % "vertical-alignment", me.valueToKey(m_vertical_alignment));
 
 	singleLineProperties.toSettings(settings, prefix);
 }
@@ -417,36 +417,36 @@ void ConductorProperties::fromSettings(QSettings &settings, const QString &prefi
 	QColor settings_color_2 = QColor(settings.value(prefix + "color2").toString());
 	m_color_2 = (settings_color_2.isValid()? settings_color_2 : QColor(Qt::black));
 
-	m_bicolor   = settings.value(prefix + "bicolor", false).toBool();
+	m_bicolor   = settings.value(prefix % "bicolor", false).toBool();
-	m_dash_size = settings.value(prefix + "dash-size", 1).toInt();
+	m_dash_size = settings.value(prefix % "dash-size", 1).toInt();
 
-	QString setting_type = settings.value(prefix + "type", typeToString(Multi)).toString();
+	QString setting_type = settings.value(prefix % "type", typeToString(Multi)).toString();
 	type = (setting_type == typeToString(Single)? Single : Multi);
 
 	singleLineProperties.fromSettings(settings, prefix);
 
-	text                 = settings.value(prefix + "text", "_").toString();
+	text                 = settings.value(prefix % "text", "_").toString();
-	QColor settings_text_color = QColor(settings.value(prefix + "text_color").toString());
+	QColor settings_text_color = QColor(settings.value(prefix % "text_color").toString());
 	text_color = (settings_text_color.isValid()? settings_text_color : QColor(Qt::black));
-	m_formula            = settings.value(prefix + "formula", "").toString();
+	m_formula            = settings.value(prefix % "formula", "").toString();
-	m_cable              = settings.value(prefix + "cable", "").toString();
+	m_cable              = settings.value(prefix % "cable", "").toString();
-	m_bus                = settings.value(prefix + "bus", "").toString();
+	m_bus                = settings.value(prefix % "bus", "").toString();
-	m_function           = settings.value(prefix + "function", "").toString();
+	m_function           = settings.value(prefix % "function", "").toString();
-	m_tension_protocol   = settings.value(prefix + "tension_protocol", "").toString();
+	m_tension_protocol   = settings.value(prefix % "tension_protocol", "").toString();
-	m_wire_color         = settings.value(prefix + "conductor_color", "").toString();
+	m_wire_color         = settings.value(prefix % "conductor_color", "").toString();
-	m_wire_section       = settings.value(prefix + "conductor_section", "").toString();
+	m_wire_section       = settings.value(prefix % "conductor_section", "").toString();
-	text_size            = settings.value(prefix + "textsize", "7").toInt();
+	text_size            = settings.value(prefix % "textsize", "7").toInt();
-	cond_size            = settings.value(prefix + "size", "1").toInt();
+	cond_size            = settings.value(prefix % "size", "1").toInt();
-	m_show_text          = settings.value(prefix + "displaytext", true).toBool();
+	m_show_text          = settings.value(prefix % "displaytext", true).toBool();
-	m_one_text_per_folio = settings.value(prefix + "onetextperfolio", false).toBool();
+	m_one_text_per_folio = settings.value(prefix % "onetextperfolio", false).toBool();
-	verti_rotate_text    = settings.value((prefix + "vertirotatetext"), "270").toDouble();
+	verti_rotate_text    = settings.value((prefix % "vertirotatetext"), "270").toDouble();
-	horiz_rotate_text    = settings.value((prefix + "horizrotatetext"), "0").toDouble();
+	horiz_rotate_text    = settings.value((prefix % "horizrotatetext"), "0").toDouble();
 
 	QMetaEnum me = QMetaEnum::fromType<Qt::Alignment>();
-	m_horizontal_alignment = Qt::Alignment(me.keyToValue(settings.value(prefix + "horizontal-alignment", "AlignBottom").toString().toStdString().data()));
+	m_horizontal_alignment = Qt::Alignment(me.keyToValue(settings.value(prefix % "horizontal-alignment", "AlignBottom").toString().toStdString().data()));
-	m_vertical_alignment = Qt::Alignment(me.keyToValue(settings.value(prefix + "vertical-alignment", "AlignRight").toString().toStdString().data()));
+	m_vertical_alignment = Qt::Alignment(me.keyToValue(settings.value(prefix % "vertical-alignment", "AlignRight").toString().toStdString().data()));
 
-	readStyle(settings.value(prefix + "style").toString());
+	readStyle(settings.value(prefix % "style").toString());
 }
 
 /**
@@ -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())
@@ -896,10 +889,10 @@ int SingleLineProperties::operator!=(const SingleLineProperties &other) const
 void SingleLineProperties::toSettings(QSettings &settings,
 				      const QString &prefix) const
 {
-	settings.setValue(prefix + "hasGround",  hasGround);
+	settings.setValue(prefix % "hasGround",  hasGround);
-	settings.setValue(prefix + "hasNeutral", hasNeutral);
+	settings.setValue(prefix % "hasNeutral", hasNeutral);
-	settings.setValue(prefix + "phases",     phases);
+	settings.setValue(prefix % "phases",     phases);
-	settings.setValue(prefix + "pen",        is_pen);
+	settings.setValue(prefix % "pen",        is_pen);
 }
 
 /**
@@ -908,8 +901,8 @@ void SingleLineProperties::toSettings(QSettings &settings,
 */
 void SingleLineProperties::fromSettings(QSettings &settings,
 					const QString &prefix) {
-	hasGround  = settings.value(prefix + "hasGround",  true).toBool();
+	hasGround  = settings.value(prefix % "hasGround",  true).toBool();
-	hasNeutral = settings.value(prefix + "hasNeutral", true).toBool();
+	hasNeutral = settings.value(prefix % "hasNeutral", true).toBool();
-	phases     = settings.value(prefix + "phases",     1).toInt();
+	phases     = settings.value(prefix % "phases",     1).toInt();
-	is_pen     = settings.value(prefix + "pen",        false).toBool();
+	is_pen     = settings.value(prefix % "pen",        false).toBool();
 }

sources/dataBase/projectdatabase.cpp

@@ -253,9 +253,11 @@ bool projectDataBase::createDataBase()
 		return false;
 	}
 
-	m_data_base.exec("PRAGMA temp_store = MEMORY");
+	QSqlQuery *temp_query = new QSqlQuery(m_data_base);
-	m_data_base.exec("PRAGMA journal_mode = MEMORY");
+	temp_query->exec("PRAGMA temp_store = MEMORY");
-	m_data_base.exec("PRAGMA synchronous = OFF");
+	temp_query->exec("PRAGMA journal_mode = MEMORY");
+	temp_query->exec("PRAGMA synchronous = OFF");
+	delete temp_query;
 
 	QSqlQuery query_(m_data_base);
 	bool first_ = true;

sources/diagram.cpp

@@ -151,7 +151,7 @@ Diagram::~Diagram()
 			continue;
 		deletable_items.append(qgi);
 	}
-	for (const auto &item : qAsConst(deletable_items))
+	for (const auto &item : std::as_const(deletable_items))
 	{
 		removeItem(item);
 		delete item;
@@ -186,7 +186,7 @@ void Diagram::drawBackground(QPainter *p, const QRectF &r) {
 	p -> drawRect(r);
 
 	if (draw_grid_) {
-			/* Draw the points of the grid
+			/* Draw the point of the grid
 			 * if background color is black,
 			 * then grid spots shall be white,
 			 * else they shall be black in color.
@@ -227,27 +227,6 @@ void Diagram::drawBackground(QPainter *p, const QRectF &r) {
 				points << QPoint(gx, gy);
 			}
 		}
-
-		qreal zoom_factor = p->transform().m11();
-		int minWidthPen = settings.value(QStringLiteral("diagrameditor/grid_pointsize_min"), 1).toInt();
-		int maxWidthPen = settings.value(QStringLiteral("diagrameditor/grid_pointsize_max"), 1).toInt();
-		pen.setWidth(minWidthPen);
-		if (minWidthPen != maxWidthPen) {
-			qreal stepPen  = (maxWidthPen - minWidthPen) / (qreal)maxWidthPen;
-			qreal stepZoom = (5.0 - 1.0) / maxWidthPen;
-			for (int n=0; n<maxWidthPen; n++) {
-				if ((zoom_factor > (1.0 + n * stepZoom)) && (zoom_factor <= (1.0 + (n+1) * stepZoom))) {
-					int widthPen = minWidthPen + qRound(n * stepPen);
-					pen.setWidth(widthPen);
-				}
-			}
-			if		(zoom_factor <= 1.0)
-						pen.setWidth(minWidthPen);
-			else if (zoom_factor > (1.0 + stepZoom * maxWidthPen))
-						pen.setWidth(maxWidthPen);
-		}
-		p -> setPen(pen);
-		if (zoom_factor > 0.5) // no grid below ... !
 		p -> drawPoints(points);
 	}
 
@@ -1160,8 +1139,8 @@ Terminal* findTerminal(int conductor_index,
 	assert(conductor_index == 1 || conductor_index == 2);
 
 	auto str_index = QString::number(conductor_index);
-	QString element_index  = QStringLiteral("element")  + str_index;
+	QString element_index  = QStringLiteral("element")  % str_index;
-	QString terminal_index = QStringLiteral("terminal") + str_index;
+	QString terminal_index = QStringLiteral("terminal") % str_index;
 
 	if (f.hasAttribute(element_index)) {
 		QUuid element_uuid = QUuid(f.attribute(element_index));
@@ -1474,13 +1453,13 @@ bool Diagram::fromXml(QDomElement &document,
 	if (position != QPointF())
 	{
 		QVector <QGraphicsItem *> added_items;
-		for (auto element : qAsConst(added_elements   )) added_items << element;
+		for (auto element : std::as_const(added_elements   )) added_items << element;
-		for (auto cond    : qAsConst(added_conductors )) added_items << cond;
+		for (auto cond    : std::as_const(added_conductors )) added_items << cond;
-		for (auto shape   : qAsConst(added_shapes     )) added_items << shape;
+		for (auto shape   : std::as_const(added_shapes     )) added_items << shape;
-		for (auto text    : qAsConst(added_texts      )) added_items << text;
+		for (auto text    : std::as_const(added_texts      )) added_items << text;
-		for (auto image   : qAsConst(added_images     )) added_items << image;
+		for (auto image   : std::as_const(added_images     )) added_items << image;
-		for (auto table   : qAsConst(added_tables     )) added_items << table;
+		for (auto table   : std::as_const(added_tables     )) added_items << table;
-		for (const auto &strip : qAsConst(added_strips)) added_items << strip;
+		for (const auto &strip : std::as_const(added_strips)) added_items << strip;
 
 		//Get the top left corner of the rectangle that contain all added items
 		QRectF items_rect;
@@ -1504,14 +1483,6 @@ 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());
@@ -1522,7 +1493,6 @@ 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);
 	}
 
@@ -1557,9 +1527,9 @@ void Diagram::folioSequentialsFromXml(const QDomElement &root,
 			QStringList list;
 			int i = 1;
 			while (folioseq.hasAttribute(seq
-						     + QString::number(i))) {
+							 % QString::number(i))) {
 				list << folioseq.attribute(
-						seq + QString::number(i));
+						seq % QString::number(i));
 				i++;
 			}
 			hash->insert(title,list);
@@ -1589,11 +1559,11 @@ void Diagram::refreshContents()
 		conductor->refreshText();
 	}
 
-	for (auto &table : qAsConst(dc_.m_tables)) {
+	for (auto &table : std::as_const(dc_.m_tables)) {
 		table->initLink();
 	}
 
-	for (auto &strip :qAsConst(dc_.m_terminal_strip)) {
+	for (auto &strip :std::as_const(dc_.m_terminal_strip)) {
 		strip->refreshPending();
 	}
 }
@@ -1778,7 +1748,7 @@ void Diagram::invertSelection()
 			item_list << item;
 		}
 	}
-	for (auto item : qAsConst(item_list)) {
+	for (auto item : std::as_const(item_list)) {
 		item -> setSelected(!item -> isSelected());
 	}
 

sources/diagramcontent.cpp

@@ -55,7 +55,7 @@ DiagramContent::DiagramContent(Diagram *diagram, bool selected) :
 		item_list = diagram->items();
 	}
 
-	for (const auto &item : qAsConst(item_list))
+	for (const auto &item : std::as_const(item_list))
 	{
 		switch (item->type())
 		{
@@ -391,10 +391,10 @@ QList<QGraphicsItem *> DiagramContent::items(int filter) const
 	if (filter & ElementTextFields) for(auto qgi : m_element_texts) items_list << qgi;
 	if (filter & TextGroup)			for(auto qgi : m_texts_groups)  items_list << qgi;
 	if (filter & Tables)            for(auto qgi : m_tables)        items_list << qgi;
-	if (filter & TerminalStrip)     for(const auto qgi : qAsConst(m_terminal_strip)) items_list << qgi;
+	if (filter & TerminalStrip)     for(const auto qgi : std::as_const(m_terminal_strip)) items_list << qgi;
 
 	if (filter & SelectedOnly) {
-		for(const auto &qgi : qAsConst(items_list)) {
+		for(const auto &qgi : std::as_const(items_list)) {
 			if (!qgi -> isSelected()) items_list.removeOne(qgi);
 		}
 	}
@@ -420,7 +420,7 @@ int DiagramContent::count(int filter) const
 		if (filter & ElementTextFields)  for(auto deti      : m_element_texts)        { if (deti      -> isSelected()) ++ count; }
 		if (filter & TextGroup)          for(auto etig      : m_texts_groups)         { if (etig      -> isSelected()) ++ count; }
 		if (filter & Tables)             for(auto table     : m_tables)               { if (table     -> isSelected()) ++ count;  }
-		if (filter & TerminalStrip)      for(const auto &strip : qAsConst(m_terminal_strip)) {if (strip->isSelected()) ++ count;}
+		if (filter & TerminalStrip)      for(const auto &strip : std::as_const(m_terminal_strip)) {if (strip->isSelected()) ++ count;}
 	}
 	else {
 		if (filter & Elements)           count += m_elements.count();

sources/diagramview.cpp

@@ -93,7 +93,10 @@ DiagramView::DiagramView(Diagram *diagram, QWidget *parent) :
 
 	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()));
+	// TODO: review the following line. Old line commented out, been broken since commit
+	// "27dcd5ef007a282d1a5a7f2f3dcaefc62669d668".
+	// connect(&(m_diagram -> border_and_titleblock), SIGNAL(diagramTitleChanged(const QString &)), this, SLOT(updateWindowTitle()));
+	connect(&(m_diagram->border_and_titleblock), &BorderTitleBlock::informationChanged, this, &DiagramView::updateWindowTitle);
 	connect(diagram, SIGNAL(findElementRequired(ElementsLocation)), this, SIGNAL(findElementRequired(ElementsLocation)));
 
 	QShortcut *edit_conductor_color_shortcut = new QShortcut(QKeySequence(Qt::Key_F2), this);
@@ -203,18 +206,9 @@ void DiagramView::handleElementDrop(QDropEvent *event)
 		return;
 	}
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
-	diagram()->setEventInterface(
-				new DiagramEventAddElement(
-					location, diagram(), mapToScene(event->pos())));
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	diagram()->setEventInterface(
 				new DiagramEventAddElement(
 					location, diagram(), event->position()));
-#endif
 
 		//Set focus to the view to get event
 	this->setFocus();
@@ -283,17 +277,8 @@ void DiagramView::handleTextDrop(QDropEvent *e) {
 		iti -> setHtml (e -> mimeData() -> text());
 	}
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
-
-	m_diagram->undoStack().push(new AddGraphicsObjectCommand(
-									iti, m_diagram, mapToScene(e->pos())));
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	m_diagram->undoStack().push(new AddGraphicsObjectCommand(
 									iti, m_diagram, e->position()));
-#endif
 }
 
 /**
@@ -447,15 +432,7 @@ 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);
@@ -505,14 +482,7 @@ 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();
@@ -573,14 +543,7 @@ 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);
 	}
@@ -614,14 +577,7 @@ void DiagramView::mouseReleaseEvent(QMouseEvent *e)
 			QMenu *menu = new QMenu(this);
 			menu->addAction(act);
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
-			menu->popup(e->globalPos());
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 			menu->popup(e->pos());
-#endif
 		}
 
 		m_free_rubberbanding = false;
@@ -1153,7 +1109,7 @@ void DiagramView::editSelection()
 	QGraphicsItem *item = m_diagram->selectedItems().first();
 
 		//We use dynamic_cast instead of qgraphicsitem_cast for QetGraphicsItem
-		//because they haven't got their own type().
+		//because they haven't got they own type().
 		//Use qgraphicsitem_cast will have weird behavior for this class.
 	if (IndependentTextItem *iti = qgraphicsitem_cast<IndependentTextItem *>(item))
 		iti -> edit();

sources/editor/UndoCommand/openelmtcommand.cpp

@@ -63,9 +63,9 @@ void OpenElmtCommand::redo()
 		m_scene->addItems(m_graphics_item.toVector());
 	}
 
-#pragma message("@TODO uncomment slot_select when fixed, see itemChange function for each primitive")
+#pragma message("@TODO uncommante slot_select when fixed, see itemChange function for each primitive")
-		//Commented because it takes a lot of time
+		//Commented because take a lot of time
-		//when a lot of primitives are loaded!
+		//when a lot of primitive are loaded
-		//needs work
+		//need work
 	//m_scene->slot_select(m_graphics_item);
 }

sources/editor/elementscene.cpp

@@ -478,12 +478,10 @@ const QDomDocument ElementScene::toXml(bool all_parts)
 		root.appendChild(element_info);
 	}
 
-	//complementary information about the element, when available
+	//complementary information about the element
-	if (!(m_element_data.m_drawing_information.trimmed().isEmpty())) {
 	QDomElement informations_element = xml_document.createElement("informations");
 	root.appendChild(informations_element);
 	informations_element.appendChild(xml_document.createTextNode(m_element_data.m_drawing_information.trimmed()));
-	}
 
 	QDomElement description = xml_document.createElement("description");
 
@@ -748,7 +746,7 @@ void ElementScene::addItems(QVector<QGraphicsItem *> items)
  */
 void ElementScene::removeItems(QVector<QGraphicsItem *> items)
 {
-	const int previous_selected_count{selectedItems().size()};
+	const qsizetype previous_selected_count{selectedItems().size()};
 
 		//block signal to avoid multiple emit of selection changed,
 		//we emit this signal only once at the end of this function.

sources/editor/elementview.cpp

@@ -480,7 +480,6 @@ bool ElementView::event(QEvent *e) {
 
 /**
 	Utilise le pincement du trackpad pour zoomer
-	Use trackpad pinch to zoom
 	@brief ElementView::gestureEvent
 	@param event
 	@return
@@ -503,7 +502,6 @@ bool ElementView::gestureEvent(QGestureEvent *event){
 
 /**
 	Dessine l'arriere-plan de l'editeur, cad la grille.
-	Draws the editor background, i.e. the grid.
 	@param p Le QPainter a utiliser pour dessiner
 	@param r Le rectangle de la zone a dessiner
 */
@@ -516,23 +514,20 @@ void ElementView::drawBackground(QPainter *p, const QRectF &r) {
 	p -> setRenderHint(QPainter::SmoothPixmapTransform, false);
 
 	// dessine un fond blanc
-	// draw a white background
 	p -> setPen(Qt::NoPen);
 	p -> setBrush(Qt::white);
 	p -> drawRect(r);
 
 	// determine le zoom en cours
-	// determine the zoom-level
 	qreal zoom_factor = transform().m11();
 
 	// choisit la granularite de la grille en fonction du zoom en cours
-	// selects the grid granularity according to the current zoom level
 	int drawn_x_grid = 1;//scene_ -> xGrid();
 	int drawn_y_grid = 1;//scene_ -> yGrid();
 	bool draw_grid = true;
 	bool draw_cross = false;
 
-	if (zoom_factor < 1.0) { //< no grid
+	if (zoom_factor < (4.0/3.0)) { //< no grid
 		draw_grid = false;
 	} else if (zoom_factor < 4.0) { //< grid 10*10
 		drawn_x_grid *= 10;
@@ -552,43 +547,25 @@ void ElementView::drawBackground(QPainter *p, const QRectF &r) {
 	m_scene->setGrid(drawn_x_grid, drawn_y_grid);
 
 	if (draw_grid) {
-		// draw the dots of the grid
+		// draw the dot of the grid
 		QPen pen(Qt::black);
 		pen.setCosmetic(true);
-		QSettings settings;
-		int minWidthPen = settings.value(QStringLiteral("elementeditor/grid_pointsize_min"), 1).toInt();
-		int maxWidthPen = settings.value(QStringLiteral("elementeditor/grid_pointsize_max"), 1).toInt();
-		pen.setWidth(minWidthPen);
-		if (minWidthPen != maxWidthPen) {
-			qreal stepPen  = (maxWidthPen - minWidthPen) / (qreal)maxWidthPen;
-			qreal stepZoom = (25.0 - 1.0) / maxWidthPen;
-			for (int n=0; n<maxWidthPen; n++) {
-				if ((zoom_factor > (1.0 + n * stepZoom)) && (zoom_factor <= (1.0 + (n+1) * stepZoom))) {
-					int widthPen = minWidthPen + qRound(n * stepPen);
-					pen.setWidth(widthPen);
-				}
-			}
-			if		(zoom_factor <= 1.0)
-						pen.setWidth(minWidthPen);
-			else if (zoom_factor > (1.0 + stepZoom * maxWidthPen))
-						pen.setWidth(maxWidthPen);
-		}
 		p -> setPen(pen);
 		p -> setBrush(Qt::NoBrush);
-		qreal limit_x = r.x() + r.width();
+		qreal limite_x = r.x() + r.width();
-		qreal limit_y = r.y() + r.height();
+		qreal limite_y = r.y() + r.height();
 
 		int g_x = (int)ceil(r.x());
 		while (g_x % drawn_x_grid) ++ g_x;
 		int g_y = (int)ceil(r.y());
 		while (g_y % drawn_y_grid) ++ g_y;
 
-		for (int gx = g_x ; gx < limit_x ; gx += drawn_x_grid) {
+		for (int gx = g_x ; gx < limite_x ; gx += drawn_x_grid) {
-			for (int gy = g_y ; gy < limit_y ; gy += drawn_y_grid) {
+			for (int gy = g_y ; gy < limite_y ; gy += drawn_y_grid) {
 				if (draw_cross) {
 					if (!(gx % 10) && !(gy % 10)) {
-						p -> drawLine(QLineF(gx - (pen.width()/4.0), gy, gx + (pen.width()/4.0), gy));
+						p -> drawLine(QLineF(gx - 0.25, gy, gx + 0.25, gy));
-						p -> drawLine(QLineF(gx, gy - (pen.width()/4.0), gx, gy + (pen.width()/4.0)));
+						p -> drawLine(QLineF(gx, gy - 0.25, gx, gy + 0.25));
 					} else {
 						p -> drawPoint(gx, gy);
 					}

sources/editor/graphicspart/partarc.cpp

@@ -61,7 +61,14 @@ void PartArc::paint(QPainter *painter, const QStyleOptionGraphicsItem *options,
 		//Always remove the brush
 	painter -> setBrush(Qt::NoBrush);
 	QPen t = painter -> pen();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
+	t.setCosmetic(options && options -> levelOfDetail < 1.0);
+#else
+#if TODO_LIST
+#pragma message("@TODO remove code for QT 6 or later")
+#endif
 	t.setCosmetic(options && options -> levelOfDetailFromTransform(painter->worldTransform()) < 1.0);
+#endif
 	painter -> setPen(t);
 
 	if (isSelected())
@@ -168,25 +175,25 @@ void PartArc::setRotation(qreal angle) {
 	qreal diffAngle = qRound((angle - rotation()) * 100.0) / 100.0;
 	m_rot = QET::correctAngle(angle, true);
 // idea taken from QET_ElementScaler:
-	auto p1 = mapToScene(m_rect.x(),m_rect.y());
-	qreal width  = m_rect.height();
-	qreal height = m_rect.width();
-	qreal x; qreal y;
 	if (diffAngle > 0) {
 	m_start_angle += 270.0 * 16;
 	while (m_start_angle < 0) { m_start_angle += (360*16); }
 	while (m_start_angle >= (360*16)) { m_start_angle -= (360*16); }
-		x = (p1.y() + m_rect.height()) * (-1);
+	qreal width  = m_rect.height();
-		y = p1.x();
+	qreal height = m_rect.width();
+	qreal x = (m_rect.y() + m_rect.height()) * (-1);
+	qreal y = m_rect.x();
+	m_rect  = QRectF(x, y, width, height);
 } else {
 	m_start_angle -= 270.0 * 16;
 	while (m_start_angle < 0) { m_start_angle += (360*16); }
 	while (m_start_angle >= (360*16)) { m_start_angle -= (360*16); }
-		x = p1.y();
+	qreal width  = m_rect.height();
-		y = (p1.x() + m_rect.width()) * (-1);
+	qreal height = m_rect.width();
+	qreal x = m_rect.y();
+	qreal y = (m_rect.x() + m_rect.width()) * (-1);
+	m_rect  = QRectF(x, y, width, height);
 	}
-	p1 = mapFromScene(x, y);
-	m_rect  = QRectF(p1.x(), p1.y(), width, height);
 
 	prepareGeometryChange();
 	adjustHandlerPos();
@@ -202,10 +209,8 @@ void PartArc::flip() {
 	m_span_angle  = (-1) * m_span_angle;
 	while (m_start_angle < 0) { m_start_angle += (360*16); }
 	while (m_start_angle >= (360*16)) { m_start_angle -= (360*16); }
-	auto p1 = mapToScene(m_rect.x(),m_rect.y());
+	qreal y = ((-1.0) * m_rect.y()) - m_rect.height();
-	p1.setY(((-1.0) * p1.y()) - m_rect.height());
+	m_rect  = QRectF(m_rect.x(), y, m_rect.width(), m_rect.height());
-	p1 = mapFromScene(p1.x(),p1.y());
-	m_rect  = QRectF(m_rect.x(), p1.y(), m_rect.width(), m_rect.height());
 	prepareGeometryChange();
 	adjustHandlerPos();
 	emit rectChanged();
@@ -216,10 +221,8 @@ void PartArc::mirror() {
 	m_span_angle = (-1) * m_span_angle;
 	while (m_start_angle < 0) { m_start_angle += (360*16); }
 	while (m_start_angle >= (360*16)) { m_start_angle -= (360*16); }
-	auto p1 = mapToScene(m_rect.x(),m_rect.y());
+	qreal x = ((-1.0) * m_rect.x()) - m_rect.width();
-	p1.setX(((-1.0) * p1.x()) - m_rect.width());
+	m_rect  = QRectF(x, m_rect.y(), m_rect.width(), m_rect.height());
-	p1 = mapFromScene(p1.x(), p1.y());
-	m_rect  = QRectF(p1.x(), m_rect.y(), m_rect.width(), m_rect.height());
 	prepareGeometryChange();
 	adjustHandlerPos();
 	emit rectChanged();

sources/editor/graphicspart/partellipse.cpp

@@ -57,7 +57,14 @@ void PartEllipse::paint(QPainter *painter, const QStyleOptionGraphicsItem *optio
 
 	QPen t = painter -> pen();
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
+	t.setCosmetic(options && options -> levelOfDetail < 1.0);
+#else
+#if TODO_LIST
+#pragma message("@TODO remove code for QT 6 or later")
+#endif
 	t.setCosmetic(options && options -> levelOfDetailFromTransform(painter->worldTransform()) < 1.0);
+#endif
 	if (isSelected())
 		t.setColor(Qt::red);
 
@@ -234,19 +241,19 @@ void PartEllipse::setRotation(qreal angle) {
 	qreal diffAngle = qRound((angle - rotation()) * 100.0) / 100.0;
 	m_rot = QET::correctAngle(angle, true);
 // idea taken from QET_ElementScaler:
-	auto p1 = mapToScene(m_rect.x(), m_rect.y());
+	if (diffAngle > 0) {
 		qreal width  = m_rect.height();
 		qreal height = m_rect.width();
-	qreal x; qreal y;
+		qreal x = (m_rect.y() + m_rect.height()) * (-1);
-	if (diffAngle > 0) {
+		qreal y = m_rect.x();
-		x = (p1.y() + m_rect.height()) * (-1);
+		m_rect  = QRectF(x, y, width, height);
-		y = p1.x();
 	} else {
-		x = m_rect.y();
+		qreal width  = m_rect.height();
-		y = (m_rect.x() + m_rect.width()) * (-1);
+		qreal height = m_rect.width();
+		qreal x = m_rect.y();
+		qreal y = (m_rect.x() + m_rect.width()) * (-1);
+		m_rect  = QRectF(x, y, width, height);
 	}
-	p1 = mapFromScene(x, y);
-	m_rect = QRectF(p1.x(), p1.y(), width, height);
 	prepareGeometryChange();
 	adjustHandlerPos();
 	emit rectChanged();
@@ -257,20 +264,16 @@ qreal PartEllipse::rotation() const {
 }
 
 void PartEllipse::flip() {
-	auto p1 = mapToScene(m_rect.x(), m_rect.y());
+	qreal y = ((-1.0) * m_rect.y()) - m_rect.height();
-	p1.setY(((-1.0) * p1.y()) - m_rect.height());
+	m_rect  = QRectF(m_rect.x(), y, m_rect.width(), m_rect.height());
-	p1 = mapFromScene(p1.x(), p1.y());
-	m_rect = QRectF(p1.x(), p1.y(), m_rect.width(), m_rect.height());
 	prepareGeometryChange();
 	adjustHandlerPos();
 	emit rectChanged();
 }
 
 void PartEllipse::mirror() {
-	auto p1 = mapToScene(m_rect.x(), m_rect.y());
+	qreal x = ((-1.0) * m_rect.x()) - m_rect.width();
-	p1.setX(((-1.0) * p1.x()) - m_rect.width());
+	m_rect  = QRectF(x, m_rect.y(), m_rect.width(), m_rect.height());
-	p1 = mapFromScene(p1.x(), p1.y());
-	m_rect = QRectF(p1.x(), p1.y(), m_rect.width(), m_rect.height());
 	prepareGeometryChange();
 	adjustHandlerPos();
 	emit rectChanged();

sources/editor/graphicspart/partline.cpp

@@ -81,7 +81,14 @@ void PartLine::paint(QPainter *painter, const QStyleOptionGraphicsItem *options,
 	QPen t = painter -> pen();
 	t.setJoinStyle(Qt::MiterJoin);
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
+	t.setCosmetic(options && options -> levelOfDetail < 1.0);
+#else
+#if TODO_LIST
+#pragma message("@TODO remove code for QT 6 or later")
+#endif
 	t.setCosmetic(options && options -> levelOfDetailFromTransform(painter->worldTransform()) < 1.0);
+#endif
 	if (isSelected()) t.setColor(Qt::red);
 
 	painter -> setPen(t);
@@ -574,12 +581,8 @@ void PartLine::setSecondEndLength(const qreal &l)
 void PartLine::setRotation(qreal angle) {
 	qreal diffAngle = qRound((angle - rotation()) * 100.0) / 100.0;
 	m_rot = QET::correctAngle(angle, true);
-	auto p1 = mapToScene(m_line.p1());
+	m_line.setP1(QTransform().rotate(diffAngle).map(m_line.p1()));
-	auto p2 = mapToScene(m_line.p2());
+	m_line.setP2(QTransform().rotate(diffAngle).map(m_line.p2()));
-	p1 = QTransform().rotate(diffAngle).map(p1);
-	p2 = QTransform().rotate(diffAngle).map(p2);
-	m_line.setP1(mapFromScene(p1));
-	m_line.setP2(mapFromScene(p2));
 	prepareGeometryChange();
 	setLine(m_line);
 	adjustHandlerPos();
@@ -591,12 +594,8 @@ qreal PartLine::rotation() const {
 }
 
 void PartLine::flip() {
-	auto p1 = mapToScene(m_line.p1());
+	m_line.setP1(QPointF(m_line.p1().x(), (-1) * m_line.p1().y()));
-	auto p2 = mapToScene(m_line.p2());
+	m_line.setP2(QPointF(m_line.p2().x(), (-1) * m_line.p2().y()));
-	p1 = QPointF(p1.x(), (-1) * p1.y());
-	p2 = QPointF(p2.x(), (-1) * p2.y());
-	m_line.setP1(mapFromScene(p1));
-	m_line.setP2(mapFromScene(p2));
 	setLine(m_line);
 	prepareGeometryChange();
 	adjustHandlerPos();
@@ -604,12 +603,8 @@ void PartLine::flip() {
 }
 
 void PartLine::mirror() {
-	auto p1 = mapToScene(m_line.p1());
+	m_line.setP1(QPointF((-1) * m_line.p1().x(), m_line.p1().y()));
-	auto p2 = mapToScene(m_line.p2());
+	m_line.setP2(QPointF((-1) * m_line.p2().x(), m_line.p2().y()));
-	p1 = QPointF((-1) * p1.x(), p1.y());
-	p2 = QPointF((-1) * p2.x(), p2.y());
-	m_line.setP1(mapFromScene(p1));
-	m_line.setP2(mapFromScene(p2));
 	setLine(m_line);
 	prepareGeometryChange();
 	adjustHandlerPos();

sources/editor/graphicspart/partpolygon.cpp

@@ -66,7 +66,14 @@ void PartPolygon::paint(QPainter *painter, const QStyleOptionGraphicsItem *optio
 	applyStylesToQPainter(*painter);
 
 	QPen t = painter -> pen();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
+	t.setCosmetic(options && options -> levelOfDetail < 1.0);
+#else
+#if TODO_LIST
+#pragma message("@TODO remove code for QT 6 or later")
+#endif
 	t.setCosmetic(options && options -> levelOfDetailFromTransform(painter->worldTransform()) < 1.0);
+#endif
 	if (isSelected()) t.setColor(Qt::red);
 	painter -> setPen(t);
 
@@ -292,12 +299,8 @@ void PartPolygon::resetAllHandlerColor()
 void PartPolygon::setRotation(qreal angle) {
 	qreal diffAngle = qRound((angle - rotation()) * 100.0) / 100.0;
 	m_rot = QET::correctAngle(angle, true);
-	for (auto &pt : m_polygon) {
+	QTransform rotation = QTransform().rotate(diffAngle);
-		pt = mapToScene(pt.x(), pt.y());
+	setPolygon(rotation.map(m_polygon));
-		pt = QTransform().rotate(diffAngle).map(pt);
-		pt = mapFromScene(pt.x(), pt.y());
-	}
-	setPolygon(m_polygon);
 	prepareGeometryChange();
 	adjustHandlerPos();
 	emit polygonChanged();
@@ -309,9 +312,7 @@ qreal PartPolygon::rotation() const {
 
 void PartPolygon::flip() {
 	for (auto &pt : m_polygon) {
-		pt = mapToScene(pt.x(), pt.y());
 		pt = QPointF(pt.x(), (-1) * pt.y());
-		pt = mapFromScene(pt.x(), pt.y());
 	}
 	setPolygon(m_polygon);
 	prepareGeometryChange();
@@ -321,9 +322,7 @@ void PartPolygon::flip() {
 
 void PartPolygon::mirror() {
 	for (auto &pt : m_polygon) {
-		pt = mapToScene(pt.x(), pt.y());
 		pt = QPointF((-1) * pt.x(), pt.y());
-		pt = mapFromScene(pt.x(), pt.y());
 	}
 	setPolygon(m_polygon);
 	prepareGeometryChange();

sources/editor/graphicspart/partrectangle.cpp

@@ -54,7 +54,14 @@ void PartRectangle::paint(QPainter *painter, const QStyleOptionGraphicsItem *opt
 	Q_UNUSED(widget);
 	applyStylesToQPainter(*painter);
 	QPen t = painter -> pen();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
+	t.setCosmetic(options && options -> levelOfDetail < 1.0);
+#else
+#if TODO_LIST
+#pragma message("@TODO remove code for QT 6 or later")
+#endif
 	t.setCosmetic(options && options -> levelOfDetailFromTransform(painter->worldTransform()) < 1.0);
+#endif
 	if (isSelected())
 		t.setColor(Qt::red);
 
@@ -163,19 +170,22 @@ void PartRectangle::setYRadius(qreal Y)
 void PartRectangle::setRotation(qreal angle) {
 	qreal diffAngle = qRound((angle - rotation()) * 100.0) / 100.0;
 	m_rot = QET::correctAngle(angle, true);
-	auto p1 = mapToScene(m_rect.x(),m_rect.y());
+	// for whatever reason: with "rect" we need to use scene-positions...
+	auto pos = mapToScene(m_rect.x(),m_rect.y());
 	qreal width  = m_rect.height();
 	qreal height = m_rect.width();
 	qreal x; qreal y;
 	if (diffAngle > 0) {
-		x = (p1.y() + m_rect.height()) * (-1);
+		x = (pos.y() + m_rect.height()) * (-1);
-		y = p1.x();
+		y = pos.x();
 	} else {
-		x = p1.y();
+		x = pos.y();
-		y = (p1.x() + m_rect.width()) * (-1);
+		y = (pos.x() + m_rect.width()) * (-1);
 	}
-	p1 = mapFromScene(x, y);
+
-	m_rect = QRectF(p1.x(), p1.y(), width, height);
+	pos = mapFromScene(x, y);
+	m_rect.setX(pos.x());   m_rect.setY(pos.y());
+	m_rect.setWidth(width); m_rect.setHeight(height);
 	std::swap (m_xRadius, m_yRadius);
 
 	prepareGeometryChange();
@@ -188,13 +198,13 @@ qreal PartRectangle::rotation() const {
 }
 
 void PartRectangle::flip() {
-	auto height = m_rect.height();
+	// for whatever reason: with "rect" we need to use scene-positions...
-	auto p1 = mapToScene(m_rect.x(),m_rect.y());
+	qreal height = m_rect.height();
-	qreal x = p1.x();
+	auto pos = mapToScene(m_rect.x(),m_rect.y());
-	qreal y = ((-1.0) * p1.y()) - height;
+	qreal x = pos.x();
-	p1 = mapFromScene(x, y);
+	qreal y = ((-1.0) * pos.y()) - height;
-	m_rect.setX(p1.x());
+	pos = mapFromScene(x, y);
-	m_rect.setY(p1.y());
+	m_rect.setX(pos.x());   m_rect.setY(pos.y());
 	m_rect.setHeight(height);
 	prepareGeometryChange();
 	adjustHandlerPos();
@@ -202,13 +212,13 @@ void PartRectangle::flip() {
 }
 
 void PartRectangle::mirror() {
-	auto width = m_rect.width();
+	// for whatever reason: with "rect" we need to use scene-positions...
-	auto p1 = mapToScene(m_rect.x(),m_rect.y());
+	qreal width = m_rect.width();
-	qreal x = ((-1.0) * p1.x()) - width;
+	auto pos = mapToScene(m_rect.x(),m_rect.y());
-	qreal y = p1.y();
+	qreal x = ((-1.0) * pos.x()) - width;
-	p1 = mapFromScene(x, y);
+	qreal y = pos.y();
-	m_rect.setX(p1.x());
+	pos = mapFromScene(x, y);
-	m_rect.setY(p1.y());
+	m_rect.setX(pos.x());   m_rect.setY(pos.y());
 	m_rect.setWidth(width);
 	prepareGeometryChange();
 	adjustHandlerPos();

sources/editor/graphicspart/partterminal.cpp

@@ -84,8 +84,18 @@ void PartTerminal::paint(
 	QPen t;
 	t.setWidthF(1.0);
 
-	t.setCosmetic(options && options -> levelOfDetailFromTransform(painter->worldTransform()) < 1.0);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
-
+	t.setCosmetic(options && options -> levelOfDetail < 1.0);
+#else
+#if TODO_LIST
+#pragma message("@TODO remove code for QT 6 or later")
+#endif
+	t.setCosmetic(
+				options
+				&& options->levelOfDetailFromTransform(
+					painter->worldTransform())
+				< 1.0);
+#endif
 	// dessin de la borne en rouge
 	t.setColor(isSelected() ? Terminal::neutralColor : Qt::red);
 	painter -> setPen(t);
@@ -158,20 +168,23 @@ void PartTerminal::setRotation(qreal angle) {
 	else new_ori = Qet::West;
 
 	qreal diffAngle = qRound((angle - rotation()) * 100.0) / 100.0;
+	double tmp, y, x;
+	if (diffAngle > 0) {
+		tmp = d->m_pos.y();
+		y   = d->m_pos.x();
+		x   = (-1) * tmp;
+	} else {
+		tmp = d->m_pos.x();
+		x   = d->m_pos.y();
+		y   = (-1) * tmp;
+	}
+	d->m_pos.setX(x); d->m_pos.setY(y);
 
-	auto p1 = QTransform().rotate(diffAngle).map(pos());
-	d->m_pos.setX(p1.x()); d->m_pos.setY(p1.y());
 	setPos(d->m_pos);
 	setOrientation(new_ori);
-	updateSecondPoint();
-	prepareGeometryChange();
 	emit orientationChanged(); // all terminal-signals call "updateForm"
 }
 
-/**
-	@brief PartTerminal::rotation
-	@return current rotation-angle in degrees
-*/
 qreal PartTerminal::rotation() const {
 	switch (d->m_orientation) {
 		case Qet::North : return 0;
@@ -182,13 +195,9 @@ qreal PartTerminal::rotation() const {
 	return 0;
 }
 
-/**
-	@brief PartTerminal::flip
-	turn part upside down
-*/
 void PartTerminal::flip() {
-	d->m_pos.setX(         pos().x());
+	d->m_pos.setY((-1.0) * d->m_pos.y());
-	d->m_pos.setY((-1.0) * pos().y());
+
 	switch (d->m_orientation) {
 		case Qet::North : setOrientation(Qet::South);
 						  break;
@@ -203,13 +212,8 @@ void PartTerminal::flip() {
 	emit yChanged(); // all terminal-signals call "updateForm"
 }
 
-/**
-	@brief PartTerminal::mirror
-	turn part from left to right
-*/
 void PartTerminal::mirror() {
-	d->m_pos.setX((-1.0) * pos().x());
+	d->m_pos.setX((-1.0) * d->m_pos.x());
-	d->m_pos.setY(         pos().y());
 	switch (d->m_orientation) {
 		case Qet::North : break;
 		case Qet::East  : setOrientation(Qet::West);

sources/editor/ui/dynamictextfieldeditor.cpp

@@ -140,10 +140,7 @@ void DynamicTextFieldEditor::updateForm()
 		ui -> m_user_text_le -> setText(m_text_field.data() -> text());
 		ui -> m_size_sb -> setValue(m_text_field.data() -> font().pointSize());
 		ui->m_keep_visual_rotation_cb->setChecked(m_text_field.data()->keepVisualRotation());
-#ifdef BUILD_WITHOUT_KF5
-#else
 		m_color_kpb -> setColor(m_text_field.data() -> color());
-#endif
 		ui -> m_width_sb -> setValue(m_text_field.data() -> textWidth());
 		ui -> m_font_pb -> setText(m_text_field -> font().family());
 
@@ -169,16 +166,13 @@ void DynamicTextFieldEditor::updateForm()
 
 void DynamicTextFieldEditor::setupWidget()
 {
-#ifdef BUILD_WITHOUT_KF5
+	m_color_kpb = new ColorButton(this);
-#else
-	m_color_kpb = new KColorButton(this);
 	m_color_kpb->setObjectName(QString::fromUtf8("m_color_kpb"));
 
-	connect(m_color_kpb, &KColorButton::changed,
+	connect(m_color_kpb, &ColorButton::changed,
 			this, &DynamicTextFieldEditor::m_color_kpb_changed);
 
 	ui->m_main_grid_layout->addWidget(m_color_kpb, 6, 1, 1, 2);
-#endif
 }
 
 void DynamicTextFieldEditor::setUpConnections()
@@ -312,8 +306,8 @@ void DynamicTextFieldEditor::on_m_width_sb_editingFinished()
 	}
 }
 
-void DynamicTextFieldEditor::on_m_elmt_info_cb_activated(const QString &arg1) {
+void DynamicTextFieldEditor::on_m_elmt_info_cb_activated(int index) {
-	Q_UNUSED(arg1)
+	Q_UNUSED(index)
 
 	QString info = ui -> m_elmt_info_cb -> currentData().toString();
 	for (int i = 0; i < m_parts.length(); i++) {

sources/editor/ui/dynamictextfieldeditor.h

@@ -21,10 +21,7 @@
 #include "../elementitemeditor.h"
 #include "../graphicspart/partdynamictextfield.h"
 
-#ifdef BUILD_WITHOUT_KF5
+#include "../../colorbutton.h"
-#else
-#	include <KColorButton>
-#endif
 
 namespace Ui {
 	class DynamicTextFieldEditor;
@@ -61,7 +58,7 @@ class DynamicTextFieldEditor : public ElementItemEditor {
 		void on_m_size_sb_editingFinished();	
 		void on_m_frame_cb_clicked();
 		void on_m_width_sb_editingFinished();
-		void on_m_elmt_info_cb_activated(const QString &arg1);
+		void on_m_elmt_info_cb_activated(int index);
 		void on_m_text_from_cb_activated(int index);
 		void on_m_composite_text_pb_clicked();
 		void on_m_alignment_pb_clicked();
@@ -77,10 +74,7 @@ class DynamicTextFieldEditor : public ElementItemEditor {
 		QList<PartDynamicTextField*> m_parts;
 		QList<QMetaObject::Connection> m_connection_list;
 
-	#ifdef BUILD_WITHOUT_KF5
+		ColorButton* m_color_kpb = nullptr;
-	#else
-		KColorButton* m_color_kpb = nullptr;
-	#endif
 };
 
 #endif // DYNAMICTEXTFIELDEDITOR_H

sources/editor/ui/qetelementeditor.cpp

@@ -487,7 +487,7 @@ void QETElementEditor::fillPartsList()
 #if TODO_LIST
 #pragma message("@TODO remove code for QT 6 or later")
 #endif
-				qDebug()<<"Help code for QT 6 or later";
+				v.setValue(qgi);
 #endif
 				qlwi -> setData(42, v);
 				m_parts_list -> addItem(qlwi);
@@ -1069,7 +1069,7 @@ void QETElementEditor::updateAction()
 			<< ui->m_revert_selection_action
 			<< ui->m_paste_from_file_action
 			<< ui->m_paste_from_element_action;
-	for (auto action : qAsConst(ro_list)) {
+	for (auto action : std::as_const(ro_list)) {
 		action->setDisabled(m_read_only);
 	}
 
@@ -1084,7 +1084,7 @@ void QETElementEditor::updateAction()
 				<< ui->m_flip_action
 				<< ui->m_mirror_action;
 	auto items_selected = !m_read_only && m_elmt_scene->selectedItems().count();
-	for (auto action : qAsConst(select_list)) {
+	for (auto action : std::as_const(select_list)) {
 		action->setEnabled(items_selected);
 	}
 

sources/editor/ui/terminaleditor.cpp

@@ -229,7 +229,7 @@ void TerminalEditor::activeConnections(bool active)
 		m_editor_connections << connect(ui->m_type_cb, QOverload<int>::of(&QComboBox::activated),
 										this, &TerminalEditor::typeEdited);
 	} else {
-		for (auto const & con : qAsConst(m_editor_connections)) {
+		for (auto const & con : std::as_const(m_editor_connections)) {
 			QObject::disconnect(con);
 		}
 		m_editor_connections.clear();

sources/editor/ui/texteditor.cpp

@@ -62,10 +62,7 @@ void TextEditor::updateForm()
 	m_rotation_sb -> setValue(m_text -> rotation());
 	m_size_sb -> setValue(m_text -> font().pointSize());
 	m_font_pb -> setText(m_text -> font().family());
-#ifdef BUILD_WITHOUT_KF5
-#else
 	m_color_pb -> setColor(m_text -> defaultTextColor());
-#endif
 
 	setUpEditConnection();
 }
@@ -84,7 +81,7 @@ void TextEditor::setUpChangeConnection(QPointer<PartText> part)
 
 void TextEditor::disconnectChangeConnection()
 {
-	for (const auto &connection : qAsConst(m_change_connection)) {
+	for (const auto &connection : std::as_const(m_change_connection)) {
 		disconnect(connection);
 	}
 	m_change_connection.clear();
@@ -344,19 +341,16 @@ void TextEditor::setUpWidget(QWidget *parent)
 	m_line_edit->setPlaceholderText(tr("Entrer votre texte ici"));
 
 	gridLayout->addWidget(m_line_edit, 0, 0, 1, 6);
-#ifdef BUILD_WITHOUT_KF5
+	m_color_pb = new ColorButton(parent);
-#else
-	m_color_pb = new KColorButton(parent);
 	m_color_pb->setObjectName(QString::fromUtf8("m_color_pb"));
 
 	connect(
 		m_color_pb,
-		&KColorButton::changed,
+		&ColorButton::changed,
 		this,
 		&TextEditor::on_m_color_pb_changed);
 
 	gridLayout->addWidget(m_color_pb, 2, 5, 1, 1);
-#endif
 	QLabel *label_5 = new QLabel(parent);
 	label_5->setObjectName(QString::fromUtf8("label_5"));
 

sources/editor/ui/texteditor.h

@@ -25,10 +25,7 @@
 #include <QSpinBox>
 #include <QLineEdit>
 #include <QPushButton>
-#ifdef BUILD_WITHOUT_KF5
+#include "../../colorbutton.h"
-#else
-#include <KColorButton>
-#endif
 class PartText;
 
 class TextEditor : public ElementItemEditor {
@@ -65,10 +62,7 @@ class TextEditor : public ElementItemEditor {
 		QSpinBox *m_size_sb;
 		QLineEdit *m_line_edit;
 		QPushButton *m_font_pb;
-#ifdef BUILD_WITHOUT_KF5
+		ColorButton *m_color_pb;
-#else
-		KColorButton *m_color_pb;
-#endif
 };
 
 #endif // TEXTEDITOR_H

sources/elementprovider.cpp

@@ -59,11 +59,11 @@ QVector <QPointer<Element>> ElementProvider::freeElement(ElementData::Types filt
 	QList<Element *> elmt_list;
 
 		//search in all diagram
-	for (const auto &diagram_ : qAsConst(m_diagram_list))
+	for (const auto &diagram_ : std::as_const(m_diagram_list))
 	{
 			//get all element in diagram d
 		elmt_list = diagram_->elements();
-		for (const auto &elmt_ : qAsConst(elmt_list))
+		for (const auto &elmt_ : std::as_const(elmt_list))
 		{
 			if (filter & elmt_->elementData().m_type &&
 				elmt_->isFree())
@@ -106,7 +106,7 @@ QList <Element *> ElementProvider::fromUuids(QList<QUuid> uuid_list) const
 QVector<QPointer<Element>> ElementProvider::find(ElementData::Types elmt_type) const
 {
 	QVector<QPointer<Element>> returned_vector;
-	for (const auto &diagram_ : qAsConst(m_diagram_list))
+	for (const auto &diagram_ : std::as_const(m_diagram_list))
 	{
 		const auto elmt_list = diagram_->elements();
 		for (const auto &elmt_ : elmt_list)
@@ -198,7 +198,7 @@ QVector<TerminalElement *> ElementProvider::freeTerminal() const
 {
 	QVector<TerminalElement *> vector_;
 
-	for (const auto &diagram : qAsConst(m_diagram_list))
+	for (const auto &diagram : std::as_const(m_diagram_list))
 	{
 		const auto elmt_list{diagram->elements()};
 

sources/elementscollectioncache.cpp

@@ -45,18 +45,19 @@ ElementsCollectionCache::ElementsCollectionCache(const QString &database_path, Q
 		qDebug() << "Unable to open the SQLite database " << database_path << " as " << connection_name << ": " << cache_db_.lastError();
 	else
 	{
-		cache_db_.exec("PRAGMA temp_store = MEMORY");
+		QSqlQuery *temp_query = new QSqlQuery(cache_db_);
-		cache_db_.exec("PRAGMA journal_mode = MEMORY");
+		temp_query->exec("PRAGMA temp_store = MEMORY");
-		cache_db_.exec("PRAGMA page_size = 4096");
+		temp_query->exec("PRAGMA journal_mode = MEMORY");
-		cache_db_.exec("PRAGMA cache_size = 16384");
+		temp_query->exec("PRAGMA page_size = 4096");
-		cache_db_.exec("PRAGMA locking_mode = EXCLUSIVE");
+		temp_query->exec("PRAGMA cache_size = 16384");
-		cache_db_.exec("PRAGMA synchronous = OFF");
+		temp_query->exec("PRAGMA locking_mode = EXCLUSIVE");
+		temp_query->exec("PRAGMA synchronous = OFF");
 
 #if TODO_LIST
 #pragma message("@TODO the tables could already exist, handle that case.")
 #endif
 			//@TODO the tables could already exist, handle that case.
-		cache_db_.exec("CREATE TABLE names"
+		temp_query->exec("CREATE TABLE names"
 					   "("
 					   "path VARCHAR(512) NOT NULL,"
 					   "locale VARCHAR(2) NOT NULL,"
@@ -65,12 +66,13 @@ ElementsCollectionCache::ElementsCollectionCache(const QString &database_path, Q
 					   "PRIMARY KEY(path, locale)"
 					   ");");
 
-		cache_db_.exec("CREATE TABLE pixmaps"
+		temp_query->exec("CREATE TABLE pixmaps"
 					   "("
 					   "path VARCHAR(512) NOT NULL UNIQUE,"
 					   "uuid VARCHAR(512) NOT NULL,"
 					   "pixmap BLOB, PRIMARY KEY(path),"
 					   "FOREIGN KEY(path) REFERENCES names (path) ON DELETE CASCADE);");
+		delete temp_query;
 
 			// prepare queries
 		select_name_   = new QSqlQuery(cache_db_);

sources/elementtextpattern.cpp

@@ -59,7 +59,7 @@ ExportElementTextPattern::ExportElementTextPattern(Element *elmt) :
 		return;
 	
 		//Check if a conf with the same name already exist
-	if (QFileInfo::exists(dir.absoluteFilePath(m_name + ".xml")))
+	if (QFileInfo::exists(dir.absoluteFilePath(m_name % ".xml")))
 	{
 		bool r = QMessageBox::question(parentWidget(),
 									   QObject::tr("Configuration de textes"),
@@ -71,7 +71,7 @@ ExportElementTextPattern::ExportElementTextPattern(Element *elmt) :
 	}
 	
 	QDomDocument doc = xmlConf();
-	QET::writeXmlFile(doc, dir.absoluteFilePath(m_name + ".xml"));
+	QET::writeXmlFile(doc, dir.absoluteFilePath(m_name % ".xml"));
 }
 
 /**
@@ -202,7 +202,7 @@ void ImportElementTextPattern::apply(QString name, bool erase) const
 	if(!name.endsWith(".xml"))
 		name.append(".xml");
 	
-	QFile conf_file(QETApp::configDir() + "/element_texts_pattern/" + name);
+	QFile conf_file(QETApp::configDir() % "/element_texts_pattern/" % name);
 	if(!conf_file.open(QIODevice::ReadOnly | QIODevice::Text))
 		return;
 	

sources/exportdialog.cpp

@@ -128,7 +128,9 @@ int ExportDialog::diagramsToExportCount() const
 
 /**
 	Met en place la liste des schemas
+	Set up the schematics list
 	@return Le widget representant la liste des schemas
+	The widget representing the list of schematics
 */
 QWidget *ExportDialog::initDiagramsListPart()
 {
@@ -139,12 +141,12 @@ QWidget *ExportDialog::initDiagramsListPart()
 	reset_mapper_     = new QSignalMapper(this);
 	clipboard_mapper_ = new QSignalMapper(this);
 	
-	connect(preview_mapper_,   SIGNAL(mapped(int)), this, SLOT(slot_previewDiagram(int)));
+	connect(preview_mapper_,   SIGNAL(mappedInt(int)), this, SLOT(slot_previewDiagram(int)));
-	connect(width_mapper_,     SIGNAL(mapped(int)), this, SLOT(slot_correctHeight(int)));
+	connect(width_mapper_,     SIGNAL(mappedInt(int)), this, SLOT(slot_correctHeight(int)));
-	connect(height_mapper_,    SIGNAL(mapped(int)), this, SLOT(slot_correctWidth(int)));
+	connect(height_mapper_,    SIGNAL(mappedInt(int)), this, SLOT(slot_correctWidth(int)));
-	connect(ratio_mapper_,     SIGNAL(mapped(int)), this, SLOT(slot_keepRatioChanged(int)));
+	connect(ratio_mapper_,     SIGNAL(mappedInt(int)), this, SLOT(slot_keepRatioChanged(int)));
-	connect(reset_mapper_,     SIGNAL(mapped(int)), this, SLOT(slot_resetSize(int)));
+	connect(reset_mapper_,     SIGNAL(mappedInt(int)), this, SLOT(slot_resetSize(int)));
-	connect(clipboard_mapper_, SIGNAL(mapped(int)), this, SLOT(slot_exportToClipBoard(int)));
+	connect(clipboard_mapper_, SIGNAL(mappedInt(int)), this, SLOT(slot_exportToClipBoard(int)));
 	
 	diagrams_list_layout_ = new QGridLayout();
 	
@@ -245,21 +247,28 @@ QSize ExportDialog::diagramSize(Diagram *diagram)
 	Cette methode ajuste la largeur d'un des schemas a exporter en fonction de
 	sa hauteur si et seulement si l'option "Conserver les proportions" est
 	activee pour ce schema.
-	@param diagram_id numero du schema concerne
+	This method adjusts the width of one of the layouts to be exported
+	according to its height if, and only if, the ‘Keep proportions’ option
+	is enabled for this layout.
+	@param diagram_id numero du schema concerne / number of drawing concerned
 */
 void ExportDialog::slot_correctWidth(int diagram_id)
 {
 	// recupere l'ExportDiagramLine concernee
+	// retrieve the ExportDiagramLine concerned
 	ExportDialog::ExportDiagramLine *current_diagram = diagram_lines_[diagram_id];
 	if (!current_diagram) return;
 	
 	// ne fait rien si l'option "Conserver les proportions" n'est pas activee
+	// do nothing if the ‘Keep proportions’ option is not active
 	if (!(current_diagram -> keep_ratio -> isChecked())) return;
 	
 	// recupere les proportions du schema
+	// retrieve the proportions of the diagram
 	qreal diagram_ratio = diagramRatio(current_diagram -> diagram);
 	
 	// ajuste la largeur
+	// adjust the width
 	current_diagram -> width -> blockSignals(true);
 	current_diagram -> width -> setValue(qRound(current_diagram -> height -> value() * diagram_ratio));
 	current_diagram -> width -> blockSignals(false);
@@ -269,21 +278,28 @@ void ExportDialog::slot_correctWidth(int diagram_id)
 	Cette methode ajuste la hauteur d'un des schemas a exporter en fonction de
 	sa largeur si et seulement si l'option "Conserver les proportions" est
 	activee pour ce schema.
-	@param diagram_id numero du schema concerne
+	This method adjusts the height of one of the layouts to be exported
+	according to its width if, and only if, the ‘Keep proportions’ option
+	is enabled for this layout.
+	@param diagram_id numero du schema concerne / number of drawing concerned
 */
 void ExportDialog::slot_correctHeight(int diagram_id)
 {
 	// recupere l'ExportDiagramLine concernee
+	// retrieve the ExportDiagramLine concerned
 	ExportDialog::ExportDiagramLine *current_diagram = diagram_lines_[diagram_id];
 	if (!current_diagram) return;
 	
 	// ne fait rien si l'option "Conserver les proportions" n'est pas activee
+	// do nothing if the ‘Keep proportions’ option is not active
 	if (!(current_diagram -> keep_ratio -> isChecked())) return;
 	
 	// recupere les proportions du schema
+	// retrieve the proportions of the diagram
 	qreal diagram_ratio = diagramRatio(current_diagram -> diagram);
 	
 	// ajuste la hauteur
+	// adjust the height
 	current_diagram -> height -> blockSignals(true);
 	current_diagram -> height -> setValue(qRound(current_diagram -> width -> value() / diagram_ratio));
 	current_diagram -> height -> blockSignals(false);
@@ -297,10 +313,12 @@ void ExportDialog::slot_correctHeight(int diagram_id)
 void ExportDialog::slot_keepRatioChanged(int diagram_id)
 {
 	// recupere l'ExportDiagramLine concernee
+	// retrieve the ExportDiagramLine concerned
 	ExportDialog::ExportDiagramLine *current_diagram = diagram_lines_[diagram_id];
 	if (!current_diagram) return;
 	
 	// gere l'icone du bouton "Conserver les proportions"
+	// manages the ‘Keep proportions’ button icon
 	if (current_diagram -> keep_ratio -> isChecked()) {
 		current_diagram -> keep_ratio -> setIcon(QET::Icons::ObjectLocked);
 	} else {
@@ -308,9 +326,11 @@ void ExportDialog::slot_keepRatioChanged(int diagram_id)
 	}
 	
 	// ne fait rien si l'option "Conserver les proportions" n'est pas activee
+	// do nothing if the ‘Keep proportions’ option is not active
 	if (!(current_diagram -> keep_ratio -> isChecked())) return;
 	
 	// au contraire, si elle est activee, ajuste la hauteur en fonction de la largeur
+	// on the other hand, if it is active, adjusts the height according to the width
 	slot_correctHeight(diagram_id);
 }
 
@@ -770,7 +790,7 @@ void ExportDialog::exportDiagram(ExportDiagramLine *diagram_line) {
 	
 	// recupere le format a utiliser (acronyme et extension)
 	QString format_acronym = export_properties.format;
-	QString format_extension = "." + format_acronym.toLower();
+	QString format_extension = "." % format_acronym.toLower();
 	
 	// determine le nom de fichier a utiliser
 	QString diagram_path = diagram_line -> file_name -> text();
@@ -867,7 +887,7 @@ void ExportDialog::slot_checkDiagramsCount()
 void ExportDialog::slot_changeFilesExtension(bool force_extension) {
 	// recupere le format a utiliser (acronyme et extension)
 	QString format_acronym = epw -> exportProperties().format;
-	QString format_extension = "." + format_acronym.toLower();
+	QString format_extension = "." % format_acronym.toLower();
 
 	// set maximum width / height according limitations in QPainter
 	if ((format_extension == ".bmp") ||
@@ -897,11 +917,11 @@ void ExportDialog::slot_changeFilesExtension(bool force_extension) {
 		// cas 2 : l'extension est absente
 		if (diagram_filename_info.suffix().isEmpty()) {
 			if (force_extension) {
-				diagram_filename = diagram_filename_info.completeBaseName() + format_extension;
+				diagram_filename = diagram_filename_info.completeBaseName() % format_extension;
 			}
 		} else {
 			// cas 3 : l'extension est presente mais erronee
-			diagram_filename = diagram_filename_info.completeBaseName() + format_extension;
+			diagram_filename = diagram_filename_info.completeBaseName() % format_extension;
 		}
 		
 		diagram_line -> file_name -> setText(diagram_filename);
@@ -1014,7 +1034,7 @@ ExportDialog::ExportDiagramLine::ExportDiagramLine(Diagram *dia, QSize diagram_s
 	if (diagram_title.isEmpty()) diagram_title = QObject::tr("Folio sans titre");
 	QString diagram_filename = diagram -> title();
 	if (diagram_filename.isEmpty()) diagram_filename = QObject::tr("schema");
-	diagram_filename = QET::stringToFileName(diagram_index + "_" + diagram_filename);
+	diagram_filename = QET::stringToFileName(diagram_index % "_" % diagram_filename);
 	
 	title_label = new QLabel(diagram_title);
 	

sources/exportproperties.cpp

@@ -54,24 +54,24 @@ ExportProperties::~ExportProperties()
 void ExportProperties::toSettings(QSettings &settings,
 				  const QString &prefix) const
 {
-	settings.setValue(prefix + "path",
+	settings.setValue(prefix % "path",
 			  QDir::toNativeSeparators(
 				  destination_directory.absolutePath()));
-	settings.setValue(prefix + "format",
+	settings.setValue(prefix % "format",
 			  format);
-	settings.setValue(prefix + "drawgrid",
+	settings.setValue(prefix % "drawgrid",
 			  draw_grid);
-	settings.setValue(prefix + "drawborder",
+	settings.setValue(prefix % "drawborder",
 			  draw_border);
-	settings.setValue(prefix + "drawtitleblock",
+	settings.setValue(prefix % "drawtitleblock",
 			  draw_titleblock);
-	settings.setValue(prefix + "drawterminals",
+	settings.setValue(prefix % "drawterminals",
 			  draw_terminals);
-	settings.setValue(prefix + "drawbgtransparent",
+	settings.setValue(prefix % "drawbgtransparent",
 			  draw_bg_transparent);
-	settings.setValue(prefix + "drawcoloredconductors",
+	settings.setValue(prefix % "drawcoloredconductors",
 			  draw_colored_conductors);
-	settings.setValue(prefix + "area",
+	settings.setValue(prefix % "area",
 			  QET::diagramAreaToString(exported_area));
 }
 
@@ -85,30 +85,30 @@ void ExportProperties::fromSettings(QSettings &settings,
 	QString export_path = QETApp::documentDir();
 	destination_directory.setPath(
 				settings.value(
-					prefix + "path",
+					prefix % "path",
 					export_path).toString());
 	if (!destination_directory.exists())
 		destination_directory.setPath(export_path);
 
-	format = settings.value(prefix + "format").toString();
+	format = settings.value(prefix % "format").toString();
 
-	draw_grid = settings.value(prefix + "drawgrid",
+	draw_grid = settings.value(prefix % "drawgrid",
 				   false).toBool();
-	draw_border = settings.value(prefix + "drawborder",
+	draw_border = settings.value(prefix % "drawborder",
 				     true ).toBool();
-	draw_titleblock = settings.value(prefix + "drawtitleblock",
+	draw_titleblock = settings.value(prefix % "drawtitleblock",
 					 true ).toBool();
-	draw_terminals = settings.value(prefix + "drawterminals",
+	draw_terminals = settings.value(prefix % "drawterminals",
 					false).toBool();
-	draw_bg_transparent = settings.value(prefix + "drawbgtransparent",
+	draw_bg_transparent = settings.value(prefix % "drawbgtransparent",
 					false).toBool();
 	draw_colored_conductors = settings.value(
-				prefix + "drawcoloredconductors",
+				prefix % "drawcoloredconductors",
 				true ).toBool();
 
 	exported_area  = QET::diagramAreaFromString(
 				settings.value(
-					prefix + "area",
+					prefix % "area",
 					"border").toString());
 }
 

sources/machine_info.cpp

@@ -55,43 +55,6 @@ void MachineInfo::send_info_to_debug()
 		<< QLibraryInfo::isDebugBuild();
 	qInfo()<< "Qt library version:"
 		<< QLibraryInfo::version();
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
-	qInfo()<< "Qt library location default prefix:"
-		<< QLibraryInfo::location(QLibraryInfo::PrefixPath);
-	qInfo()<< "Qt library location documentation:"
-		<< QLibraryInfo::location(QLibraryInfo::DocumentationPath);
-	qInfo()<< "Qt library location headers:"
-		<< QLibraryInfo::location(QLibraryInfo::HeadersPath);
-	qInfo()<< "Qt library location libraries:"
-		<< QLibraryInfo::location(QLibraryInfo::LibrariesPath);
-	qInfo()<< "Qt library location executables:"
-		<< QLibraryInfo::location(QLibraryInfo::LibraryExecutablesPath);
-	qInfo()<< "Qt library location Qt binaries:"
-		<< QLibraryInfo::location(QLibraryInfo::BinariesPath);
-	qInfo()<< "Qt library location Qt plugins:"
-		<< QLibraryInfo::location(QLibraryInfo::PluginsPath);
-	qInfo()<< "Qt library location installed QML extensions:"
-		<< QLibraryInfo::location(QLibraryInfo::ImportsPath);
-	qInfo()<< "Qt library location installed QML extensions:"
-		<< QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath);
-	qInfo()<< "Qt library location dependent Qt data:"
-		<< QLibraryInfo::location(QLibraryInfo::ArchDataPath);
-	qInfo()<< "Qt library location independent Qt data:"
-		<< QLibraryInfo::location(QLibraryInfo::DataPath);
-	qInfo()<< "Qt library location translation:"
-		<< QLibraryInfo::location(QLibraryInfo::TranslationsPath);
-	qInfo()<< "Qt library location examples:"
-		<< QLibraryInfo::location(QLibraryInfo::ExamplesPath);
-	qInfo()<< "Qt library location Qt testcases:"
-		<< QLibraryInfo::location(QLibraryInfo::TestsPath);
-#ifndef Q_OS_WIN
-	qInfo()<< "Qt library location Qt settings:"
-		<< QLibraryInfo::location(QLibraryInfo::SettingsPath);
-#endif
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
 	qInfo()<< "Qt library path default prefix:"
 		<< QLibraryInfo::path(QLibraryInfo::PrefixPath);
 	qInfo()<< "Qt library path documentation:"
@@ -123,34 +86,33 @@ void MachineInfo::send_info_to_debug()
 #ifndef Q_OS_WIN
 	qInfo()<< "Qt library path Qt settings:"
 		<< QLibraryInfo::path(QLibraryInfo::SettingsPath);
-#endif
 #endif
 	if (strlen(GIT_COMMIT_SHA)) {
-		qInfo() << "GitRevision " + QString(GIT_COMMIT_SHA);
+		qInfo() << "GitRevision " % QString(GIT_COMMIT_SHA);
 	}
-	qInfo()<< "QElectroTech V " + QetVersion::displayedVersion();
+	qInfo()<< "QElectroTech V " % QetVersion::displayedVersion();
-	qInfo()<< QObject::tr("Compilation : ") + pc.built.version;
+	qInfo()<< QObject::tr("Compilation : ") % pc.built.version;
-	qInfo()<< "Built with Qt " + pc.built.QT
+	qInfo()<< "Built with Qt " % pc.built.QT
-		  + " - " + pc.built.arch
+		  % " - " % pc.built.arch
-		  + " - Date : " + pc.built.date
+		  % " - Date : " % pc.built.date
-		  + " : " + pc.built.time;
+		  % " : " % pc.built.time;
-	qInfo()<< "Run with Qt "+ QString(qVersion())
+	qInfo()<< "Run with Qt " % QString(qVersion())
-		  + " using"
+		  % " using"
-		  + QString(" %1 thread(s)").arg(pc.cpu.ThreadCount);
+		  % QString(" %1 thread(s)").arg(pc.cpu.ThreadCount);
-	qInfo()<< "CPU : " + pc.cpu.info;
+	qInfo()<< "CPU : " % pc.cpu.info;
 	qInfo()<< pc.ram.Total;
 	qInfo()<< pc.ram.Available;
-	qInfo()<< "GPU : " + pc.gpu.info;
+	qInfo()<< "GPU : " % pc.gpu.info;
-	qInfo()<< "GPU RAM : " + pc.gpu.RAM;
+	qInfo()<< "GPU RAM : " % pc.gpu.RAM;
 
-	qInfo()<< "OS : " + pc.os.type
+	qInfo()<< "OS : " % pc.os.type
-		  + "  - " + pc.cpu.Architecture
+		  % "  - " % pc.cpu.Architecture
-		  + " - Version : "+pc.os.name
+		  % " - Version : " % pc.os.name
-		  + " - Kernel : "+pc.os.kernel;
+		  % " - Kernel : " % pc.os.kernel;
 	qInfo()<< "";
 	
 	qInfo()<< " OS System language:"<< QLocale::system().name();
-	qInfo()<< " OS System Native Country Name:"<< QLocale::system().nativeCountryName();
+	qInfo()<< " OS System Native Country Name:"<< QLocale::system().nativeTerritoryName();
 	qInfo()<< " OS System Native Language Name:"<< QLocale::system().nativeLanguageName();	
 	qInfo()<< "";
 	qInfo()<< " System language defined in QET configuration:"<< QString(QETApp::langFromSetting().toLatin1());
@@ -171,8 +133,8 @@ void MachineInfo::send_info_to_debug()
 	qInfo()<< " App Config Location:"<< QETApp::configDir();
 	qInfo()<< " For data-files (user-/company-collections, titleblocks, etc.):";
 	qInfo()<< " App Data Location:"<< QETApp::dataDir();
-	qInfo()<< " Directory for project stalefiles:";
+	qInfo()<< " Directory for project's autosave files (stalefiles):";
-	qInfo()<< " Generic Data Location:"<< QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + "/stalefiles/QElectroTech/";
+	qInfo()<< " Autosave:"<< QETApp::autosaveDir() % "/autosave";
 	// qInfo()<< " App Local DataLocation:"<< QStandardPaths::writableLocation(QStandardPaths::ApplicationsLocation);
 	// qInfo()<< " Home Location:"<< QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
 	// qInfo()<< " Runtime Location:"<< QStandardPaths::writableLocation(QStandardPaths::RuntimeLocation);
@@ -188,7 +150,7 @@ void MachineInfo::send_info_to_debug()
 	QDirIterator it1(QETApp::commonElementsDir().toLatin1(),nameFilters,  QDir::Files, QDirIterator::Subdirectories);
 			while (it1.hasNext())
 			{
-				if(it1.next() > 0 )
+				if(it1.next() != "")
 				{
 				commomElementsDir ++;
 				}
@@ -200,7 +162,7 @@ void MachineInfo::send_info_to_debug()
 	QDirIterator it2(QETApp::customElementsDir().toLatin1(), nameFilters, QDir::Files, QDirIterator::Subdirectories);
 			while (it2.hasNext())
 			{
-				if(it2.next() > 0 )
+				if(it2.next() != "")
 				{
 				customElementsDir ++;
 				}
@@ -211,7 +173,7 @@ void MachineInfo::send_info_to_debug()
 	QDirIterator it3(QETApp::companyElementsDir().toLatin1(), nameFilters, QDir::Files, QDirIterator::Subdirectories);
 			while (it3.hasNext())
 			{
-				if(it3.next() > 0 )
+				if(it3.next() != "")
 				{
 				companyElementsDir ++;
 				}
@@ -452,29 +414,29 @@ int32_t MachineInfo::i_max_screen_height() {
 */
 QString MachineInfo::compilation_info()
 {
-	QString compilation_info = "<br />" + QObject::tr("Compilation :   ");
+	QString compilation_info = "<br />" % QObject::tr("Compilation :   ");
 	compilation_info +=pc.built.version;
 	
-	compilation_info += "<br>Built with Qt " + pc.built.QT;
+	compilation_info += "<br>Built with Qt " % pc.built.QT;
-	compilation_info += " - " + pc.built.arch;
+	compilation_info += " - " % pc.built.arch;
-	compilation_info += " - Date : " + pc.built.date;
+	compilation_info += " - Date : " % pc.built.date;
-	compilation_info += " : " + pc.built.time;
+	compilation_info += " : " % pc.built.time;
 	if (strlen(GIT_COMMIT_SHA)) {
-		compilation_info += "<br> Git Revision : " + QString(GIT_COMMIT_SHA);
+		compilation_info += "<br> Git Revision : " % QString(GIT_COMMIT_SHA);
 	}
-	compilation_info += " <br>Run with Qt " + QString(qVersion());
+	compilation_info += " <br>Run with Qt " % QString(qVersion());
 	compilation_info += " using"
 			+ QString(" %1 thread(s)").arg(pc.cpu.ThreadCount);
-	compilation_info +=  "<br> CPU : " + pc.cpu.info;
+	compilation_info +=  "<br> CPU : " % pc.cpu.info;
-	compilation_info += "<br>" + pc.ram.Total;
+	compilation_info += "<br>" % pc.ram.Total;
-	compilation_info += "<br>" + pc.ram.Available;
+	compilation_info += "<br>" % pc.ram.Available;
-	compilation_info += "<br>GPU : " + pc.gpu.info;
+	compilation_info += "<br>GPU : " % pc.gpu.info;
-	compilation_info += "<br>GPU RAM : " + pc.gpu.RAM;
+	compilation_info += "<br>GPU RAM : " % pc.gpu.RAM;
 
-	compilation_info += "<br>  OS : " + pc.os.type;
+	compilation_info += "<br>  OS : " % pc.os.type;
-	compilation_info += "  -   " + pc.cpu.Architecture;
+	compilation_info += "  -   " % pc.cpu.Architecture;
-	compilation_info += " -  Version :    "+pc.os.name;
+	compilation_info += " -  Version :    " % pc.os.name;
-	compilation_info += "</br> -  Kernel :     "+pc.os.kernel;
+	compilation_info += "</br> -  Kernel :     " % pc.os.kernel;
 	compilation_info += "<br>  *** Qt screens *** </br>";
 
 	for (int ii = 0; ii < pc.screen.count; ++ii) {

sources/machine_info.h

@@ -84,12 +84,12 @@ class MachineInfo
 			QString version=
 #ifdef __GNUC__
 #ifdef __APPLE_CC__
-					"CLANG " + QString(__clang_version__);
+					"CLANG " % QString(__clang_version__);
 #else
-					"GCC " + QString(__VERSION__);
+					"GCC " % QString(__VERSION__);
 #endif
 #elif defined(Q_CC_MSVC)
-					"MSVC " + QString(QT_STRINGIFY(_MSC_FULL_VER));
+					"MSVC " % QString(QT_STRINGIFY(_MSC_FULL_VER));
 #endif
 			QString QT=QString(QT_VERSION_STR);
 			QString date=QString(__DATE__);

sources/main.cpp

@@ -23,7 +23,7 @@
 #include "utils/qetsettings.h"
 
 #include <QStyleFactory>
-#include <QtConcurrentRun>
+#include <QThreadPool>
 
 /**
 	@brief myMessageOutput
@@ -216,7 +216,7 @@ QGuiApplication::setHighDpiScaleFactorRoundingPolicy(QetSettings::hdpiScaleFacto
 	QObject::connect(&app, &SingleApplication::receivedMessage,
 			 &qetapp, &QETApp::receiveMessage);
 
-	QtConcurrent::run([=]()
+	QThreadPool::globalInstance()->start([=]()
 	{
 		// for debugging
 		qInstallMessageHandler(myMessageOutput);

sources/print/projectprintwindow.cpp

@@ -24,13 +24,6 @@
 
 #include "ui_projectprintwindow.h"
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) // ### Qt 6: remove
-#	include <QDesktopWidget>
-#else
-#	if TODO_LIST
-#		pragma message("@TODO remove code for QT 6 or later")
-#	endif
-#endif
 #include <QMarginsF>
 #include <QPageSetupDialog>
 #include <QPainter>
@@ -50,14 +43,7 @@ void ProjectPrintWindow::launchDialog(QETProject *project, QPrinter::OutputForma
 	auto printer_ = new QPrinter();
 	QPrinter printer(QPrinter::HighResolution);
 	printer_->setDocName(ProjectPrintWindow::docName(project));
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	printer_->setOrientation(QPrinter::Landscape);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#	endif
 	printer_->setPageOrientation(QPageLayout::Landscape);
-#endif
 
 	if (format == QPrinter::NativeFormat) //To physical printer
 	{
@@ -66,14 +52,7 @@ void ProjectPrintWindow::launchDialog(QETProject *project, QPrinter::OutputForma
 		print_dialog.setWindowFlags(Qt::Sheet);
 #endif
 		print_dialog.setWindowTitle(tr("Options d'impression", "window title"));
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)	// ### Qt 6: remove
+		print_dialog.setOptions(QAbstractPrintDialog::PrintShowPageSize);
-		print_dialog.setEnabledOptions(QAbstractPrintDialog::PrintShowPageSize);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
-		qDebug()<<"Help code for QT 6 or later";
-#endif
 		if (print_dialog.exec() == QDialog::Rejected) {
 			delete  printer_;
 			return;
@@ -82,7 +61,7 @@ void ProjectPrintWindow::launchDialog(QETProject *project, QPrinter::OutputForma
 	else //To pdf file
 	{
 		auto dir_path = project->currentDir();
-		QString file_name = QDir::toNativeSeparators(QDir::cleanPath(dir_path + "/" + printer_->docName()));
+		QString file_name = QDir::toNativeSeparators(QDir::cleanPath(dir_path % "/" % printer_->docName()));
 		if (!file_name.endsWith(".pdf")) {
 			file_name.append(".pdf");
 		}
@@ -190,7 +169,6 @@ ProjectPrintWindow::~ProjectPrintWindow()
  */
 void ProjectPrintWindow::requestPaint()
 {
-	#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
 	#ifdef Q_OS_WIN
 		#ifdef QT_DEBUG
 		qDebug() << "--";
@@ -208,7 +186,6 @@ void ProjectPrintWindow::requestPaint()
 		qDebug() << "--";
 		#endif
 	#endif
-	#endif
 
 	if (!m_project->diagrams().count()) {
 		return;
@@ -259,15 +236,8 @@ void ProjectPrintWindow::printDiagram(Diagram *diagram, bool fit_page, QPainter
 		diagram->render(painter, QRectF(), diagram_rect, Qt::KeepAspectRatio);
 	} else {
 		// Print on one or several pages
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
+		auto printed_rect = full_page ? printer->paperRect(QPrinter::Millimeter)
-		auto printed_rect = full_page ? printer->paperRect() : printer->pageRect();
+									  : printer->pageRect(QPrinter::Millimeter);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
-	qDebug()<<"Help code for QT 6 or later";
-	auto printed_rect = full_page ? printer->paperRect(QPrinter::Millimeter) : printer->pageRect(QPrinter::Millimeter);
-#endif
 		auto used_width  = printed_rect.width();
 		auto used_height = printed_rect.height();
 		auto h_pages_count = horizontalPagesCount(diagram, option, full_page);
@@ -276,24 +246,17 @@ void ProjectPrintWindow::printDiagram(Diagram *diagram, bool fit_page, QPainter
 		QVector<QVector<QRect>> page_grid;
 			//The diagram is printed on a matrix of sheet
 			//scrolls through the rows of the matrix
-		auto y_offset = 0;
+		qreal y_offset = 0;
 		for (auto i=0 ; i<v_pages_count ; ++i)
 		{
 			page_grid << QVector<QRect>();
 				//scrolls through the lines of sheet
-			auto x_offset = 0;
+			qreal x_offset = 0;
 			for (auto j=0 ; j<h_pages_count ; ++j)
 			{
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
 				page_grid.last() << QRect(QPoint(x_offset, y_offset),
 										  QSize(qMin(used_width, diagram_rect.width() - x_offset),
 												qMin(used_height, diagram_rect.height() - y_offset)));
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#endif
-				qDebug()<<"Help code for QT 6 or later";
-#endif
 				x_offset += used_width;
 			}
 			y_offset += used_height;
@@ -358,17 +321,10 @@ int ProjectPrintWindow::horizontalPagesCount(
 		Diagram *diagram, const ExportProperties &option, bool full_page) const
 {
 	QRect printable_area;
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	printable_area = full_page ? m_printer->paperRect() : m_printer->pageRect();
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#	endif
 	printable_area =
 		full_page ?
 			m_printer->pageLayout().fullRectPixels(m_printer->resolution()) :
 			m_printer->pageLayout().paintRectPixels(m_printer->resolution());
-#endif
 	QRect diagram_rect = diagramRect(diagram, option);
 
 	int h_pages_count = int(ceil(qreal(diagram_rect.width()) / qreal(printable_area.width())));
@@ -387,17 +343,10 @@ int ProjectPrintWindow::verticalPagesCount(
 		Diagram *diagram, const ExportProperties &option, bool full_page) const
 {
 	QRect printable_area;
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	printable_area = full_page ? m_printer->paperRect() : m_printer->pageRect();
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#	endif
 	printable_area =
 		full_page ?
 			m_printer->pageLayout().fullRectPixels(m_printer->resolution()) :
 			m_printer->pageLayout().paintRectPixels(m_printer->resolution());
-#endif
 	QRect diagram_rect = diagramRect(diagram, option);
 
 	int v_pages_count = int(ceil(qreal(diagram_rect.height()) / qreal(printable_area.height())));
@@ -468,43 +417,6 @@ void ProjectPrintWindow::loadPageSetupForCurrentPrinter()
 	}
 
 	settings.beginGroup(printer_section);
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	if (settings.contains("orientation")) {
-		QString value = settings.value("orientation", "landscape").toString();
-		m_printer -> setOrientation(value == "landscape" ? QPrinter::Landscape : QPrinter::Portrait);
-	}
-	if (settings.contains("papersize")) {
-		int value = settings.value("papersize", QPrinter::A4).toInt();
-		if (value == QPrinter::Custom) {
-			bool w_ok, h_ok;
-			int w = settings.value("customwidthmm", -1).toInt(&w_ok);
-			int h = settings.value("customheightmm", -1).toInt(&h_ok);
-			if (w_ok && h_ok && w != -1 && h != -1) {
-				m_printer -> setPaperSize(QSizeF(w, h), QPrinter::Millimeter);
-			}
-		} else if (value < QPrinter::Custom) {
-			m_printer -> setPaperSize(static_cast<QPrinter::PaperSize>(value));
-		}
-	}
-
-	qreal margins[4];
-	m_printer -> getPageMargins(&margins[0], &margins[1], &margins[2], &margins[3], QPrinter::Millimeter);
-	QStringList margins_names(QStringList() << "left" << "top" << "right" << "bottom");
-	for (int i = 0 ; i < 4 ; ++ i) {
-		bool conv_ok;
-		qreal value = settings.value("margin" + margins_names.at(i), -1.0).toReal(&conv_ok);
-		if (conv_ok && value != -1.0) margins[i] = value;
-	}
-	m_printer->setPageMargins(
-		margins[0],
-		margins[1],
-		margins[2],
-		margins[3],
-		QPrinter::Millimeter);
-#else
-#if TODO_LIST
-#pragma message("@TODO remove code for QT 6 or later")
-#	endif
 	if (settings.contains("orientation"))
 	{
 		QString value = settings.value("orientation", "landscape").toString();
@@ -550,14 +462,13 @@ void ProjectPrintWindow::loadPageSetupForCurrentPrinter()
 	for (int i = 0; i < 4; ++i)
 	{
 		bool  conv_ok;
-		qreal value = settings.value("margin" + margins_names.at(i), -1.0)
+		qreal value = settings.value("margin" % margins_names.at(i), -1.0)
 						  .toReal(&conv_ok);
 		if (conv_ok && value != -1.0) margins[i] = value;
 	}
 	m_printer->setPageMargins(
 		QMarginsF(margins[0], margins[1], margins[2], margins[3]),
 		QPageLayout::Millimeter);
-#endif
 	m_printer->setFullPage(
 		settings.value("fullpage", "false").toString() == "true");
 
@@ -574,35 +485,6 @@ void ProjectPrintWindow::savePageSetupForCurrentPrinter()
 	settings.beginGroup("printers");
 	settings.beginGroup(printer_section);
 
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 1) // ### Qt 6: remove
-	settings.setValue("orientation", m_printer -> orientation() == QPrinter::Portrait ? "portrait" : "landscape");
-	settings.setValue("papersize", int(m_printer -> paperSize()));
-	if (m_printer -> paperSize() == QPrinter::Custom) {
-		QSizeF size = m_printer -> paperSize(QPrinter::Millimeter);
-		settings.setValue("customwidthmm", size.width());
-		settings.setValue("customheightmm", size.height());
-	} else {
-		settings.remove("customwidthmm");
-		settings.remove("customheightmm");
-	}
-	qreal left, top, right, bottom;
-	m_printer
-		->getPageMargins(&left, &top, &right, &bottom, QPrinter::Millimeter);
-	settings.setValue("marginleft", left);
-	settings.setValue("margintop", top);
-	settings.setValue("marginright", right);
-	settings.setValue("marginbottom", bottom);
-	settings.setValue("fullpage", m_printer->fullPage() ? "true" : "false");
-	settings.endGroup();
-	settings.endGroup();
-	settings.sync();
-
-#else
-#	if TODO_LIST
-#		pragma message("@TODO remove code for QT 6 or later")
-#	endif
-	qDebug() << "Help code for QT 6 or later";
-
 	settings.setValue(
 		"orientation",
 		m_printer->pageLayout().orientation() == QPageLayout::Portrait ?
@@ -633,7 +515,6 @@ void ProjectPrintWindow::savePageSetupForCurrentPrinter()
 	settings.endGroup();
 	settings.endGroup();
 	settings.sync();
-#endif
 }
 
 /**

sources/properties/userproperties.cpp

@@ -44,17 +44,17 @@ QDomElement UserProperties::toXml(QDomDocument &xml_document) const
 
 	for (auto i = m_properties.begin(); i != m_properties.end(); ++i)
 	{
-		auto type = i.value().type();
+		auto type = i.value().typeId();
 		switch(type) {
-		case QVariant::Type::String:
+		case QMetaType::QString:
 			up.appendChild(QETXML::createXmlProperty(i.key(), i.value().toString())); break;
-		case QVariant::Type::Int:
+		case QMetaType::Int:
 			up.appendChild(QETXML::createXmlProperty(i.key(), i.value().toInt())); break;
-		case QVariant::Type::Double:
+		case QMetaType::Double:
 			up.appendChild(QETXML::createXmlProperty(i.key(), i.value().toDouble())); break;
-		case QVariant::Type::Bool:
+		case QMetaType::Bool:
 			up.appendChild(QETXML::createXmlProperty(i.key(), i.value().toBool())); break;
-		case QVariant::Type::Color:
+		case QMetaType::QColor:
 			up.appendChild(QETXML::createXmlProperty(i.key(), QColor(i.value().value<QColor>()))); break;
 		default:
 			break;

sources/qet.cpp

@@ -32,10 +32,6 @@
 	en orientation. Si la chaine fait plusieurs caracteres, seul le
 	premier est pris en compte. En cas d'incoherence, Qet::North est
 	retourne.
-	Used to convert a string of characters (‘n’, ‘s’, ‘e’ or ‘w’)
-	into orientation. If the string is made up of several characters,
-	only the only the first is taken into account. In the event of an
-	inconsistency, Qet::North is returned.
 	@param s Chaine de caractere cense representer une orientation
 	@return l'orientation designee par la chaine de caractere
 */
@@ -64,7 +60,6 @@ QString Qet::orientationToString(Qet::Orientation o) {
 
 /**
 	Indique si deux orientations de Borne sont sur le meme axe (Vertical / Horizontal).
-	Indicates whether two terminal orientations are on the same axis (Vertical / Horizontal).
 	@param a La premiere orientation de Borne
 	@param b La seconde orientation de Borne
 	@return Un booleen a true si les deux orientations de bornes sont sur le meme axe

sources/qetapp.cpp

@@ -45,7 +45,7 @@
 #define STRINGIFY(x) #x
 #include <QProcessEnvironment>
 #include <QRegularExpression>
-#ifdef BUILD_WITHOUT_KF5
+#ifdef BUILD_WITHOUT_KF6
 #else
 #	include <KAutoSaveFile>
 #endif
@@ -222,6 +222,23 @@ void QETApp::setLanguage(const QString &desired_language) {
 
 	// load translations for the QET application
 	// charge les traductions pour l'application QET
+#ifdef QMFILES_AS_RESOURCE
+	if (!qetTranslator.load(QLocale(desired_language), "qet" "_", ":/lang")) {
+		/* in case of failure,
+		 *  we fall back on the native channels for French
+		 * en cas d'echec,
+		 *  on retombe sur les chaines natives pour le francais
+		 */
+		if (desired_language != "fr") {
+			// use of the English version by default
+			// utilisation de la version anglaise par defaut
+			if(!qetTranslator.load(QLocale(desired_language), "qet", "_", ":/lang"))
+				qWarning() << "failed to load"
+						   << ":/lang/qet_en.qm" << "(" << __FILE__
+						   << __LINE__ << __FUNCTION__ << ")";
+		}
+	}
+#else
 	if (!qetTranslator.load("qet_" + desired_language, languages_path)) {
 		/* in case of failure,
 		 *  we fall back on the native channels for French
@@ -237,6 +254,8 @@ void QETApp::setLanguage(const QString &desired_language) {
 						   << __LINE__ << __FUNCTION__ << ")";
 		}
 	}
+#endif
+	qInfo() << "Loaded language file:" << qetTranslator.filePath();
 	qApp->installTranslator(&qetTranslator);
 
 	QString ltr_special_string = tr(
@@ -1234,7 +1253,7 @@ bool QETApp::closeEveryEditor()
 /**
 	@brief QETApp::diagramTextsFont
 	The font to use
-	By default the font is "Sans Serif" and size 9.
+	By default the font is "sans Serif" and size 9.
 	@param size : the size of font
 	@return the font to use
 */
@@ -1243,22 +1262,16 @@ QFont QETApp::diagramTextsFont(qreal size)
 	QSettings settings;
 
 	//Font to use
-	QString diagram_texts_family = settings.value("diagramitemfont",
+	QString diagram_texts_family = settings.value("diagramfont",
 							  "Sans Serif").toString();
-	qreal diagram_texts_size     = settings.value("diagramitemsize",
+	qreal diagram_texts_size     = settings.value("diagramsize",
 							  9.0).toDouble();
-	auto diagram_texts_item_weight =
-			static_cast<QFont::Weight>(
-				settings.value("diagramitemweight", QFont::Normal).toInt());
-	QString diagram_texts_item_style  = settings.value("diagramitemstyle").toString();
 
 	if (size != -1.0) {
 		diagram_texts_size = size;
 	}
 	QFont diagram_texts_font = QFont(diagram_texts_family);
 	diagram_texts_font.setPointSizeF(diagram_texts_size);
-	diagram_texts_font.setWeight(diagram_texts_item_weight);
-	diagram_texts_font.setStyleName(diagram_texts_item_style);
 	if (diagram_texts_size <= 4.0) {
 		diagram_texts_font.setWeight(QFont::Light);
 	}
@@ -1266,7 +1279,7 @@ QFont QETApp::diagramTextsFont(qreal size)
 }
 /**
 	@brief QETApp::diagramTextsItemFont
-	the font to use in independent text items
+	the font for to use in independent text item
 	@param size of font
 	@return
 */
@@ -1281,7 +1294,7 @@ QFont QETApp::diagramTextsItemFont(qreal size)
 							   9.0).toDouble();
 	auto diagram_texts_item_weight =
 			static_cast<QFont::Weight>(
-				settings.value("diagramitemweight", QFont::Normal).toInt());
+				settings.value("diagramitemweight").toInt());
 	QString diagram_texts_item_style  = settings.value("diagramitemstyle",
 							   "normal").toString();
 
@@ -2374,7 +2387,7 @@ void QETApp::buildSystemTrayMenu()
 */
 void QETApp::checkBackupFiles()
 {
-#ifdef BUILD_WITHOUT_KF5
+#ifdef BUILD_WITHOUT_KF6
 	return;
 #else
 	QList<KAutoSaveFile *> stale_files = KAutoSaveFile::allStaleFiles();