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qelectrotech-source-mirror/sources/ui/duplicateoffsetdialog.h
T
ispyisail fa213d90d9 Add Ctrl+D: duplicate the selection, offset by a configured grid step (#991)
Split from #913's second suggestion. There was no shortcut for the common
"duplicate with offset" convention; the nearest existing feature,
"Collage multiple", is a different workflow (a dialog for repeating a
paste in a grid pattern, not a one-shot duplicate).

Ctrl+D copies the selection and places it immediately, offset by a
configured spacing and direction -- no interactive follow-the-cursor
step, unlike Ctrl+V. The first press (or after the setting is explicitly
reopened) shows DuplicateOffsetDialog: spacing in grid steps, direction
up/down/left/right. Every later press reuses whatever was confirmed then,
silently, so a row of copies is one key held down and tapped, not a
dialog every time -- unattended, repeatable stamping is the actual point
of a duplicate shortcut, which a dialog or an interactive placement step
on every press would defeat. A separate "Configurer la duplication..."
entry reopens the dialog on demand to change the setting later. Cancel
leaves the diagram untouched -- verified, not assumed: qet_diff against
the saved file shows 0 added.

Chaining ("keep tapping to lay out a row") needs no special handling:
QET already reselects whatever a paste just added
(PasteDiagramCommand::redo()), so the next Ctrl+D naturally continues
from the copy just placed rather than the original.

The offset is applied by hand rather than by asking paste()/fromXml() to
place the copy at a target position. Both of those feed the position
through Diagram::snapToGrid(), which reads
QApplication::keyboardModifiers() and rounds to the nearest PIXEL instead
of the grid whenever Ctrl is held -- and Ctrl is always held here, this
action's own shortcut being Ctrl+D. Measured before settling on this:
routing the offset through paste() first produced copies off-grid on both
axes, by an amount that tracked the selection's own bounding-box geometry
rather than being a fixed error -- caught by qet-mcp's qet_elements
against the saved file, not by eye. fromXml() is instead called with no
position argument at all (leaves every item at its source coordinates,
landing the copy on top of the originals -- (0,0) is not a position, this
is "keep the source coordinates"), and the offset is added directly with
setPos(). A plain addition cannot be off by a rounding rule that never
runs.

Conductors are not in the hand-translated set: fromXml() itself does not
reposition them either -- they load after elements are already in their
final place and take their geometry from their terminals, which have
already moved with the elements that own them. Verified this holds: drew
a conductor by hand between two elements (drag, not click-click),
selected both, Ctrl+D, and the new conductor correctly joins the two new
elements via qet_conductors -- not the originals, not a mix.

Verified end-to-end on a built binary via qet-mcp, not by eye:

  before          L2 (303,207)  L9 (512,196)     -- deliberately off-grid
  spacing=2, down    (303,227)     (512,216)      -- +0,+20 exactly
  same again, 2nd    (303,247)     (512,236)      -- +0,+20 again, chained

Both elements land exactly the configured offset from their immediate
source regardless of the selection's own alignment. Qt 6.10.2, ctest
11/11.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-23 11:30:30 +12:00

66 lines
2.2 KiB
C++

/*
Copyright 2006-2026 The QElectroTech Team
This file is part of QElectroTech.
QElectroTech is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
QElectroTech is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DUPLICATEOFFSETDIALOG_H
#define DUPLICATEOFFSETDIALOG_H
#include <QDialog>
#include <QPoint>
class QSpinBox;
class QComboBox;
/**
@brief The DuplicateOffsetDialog class
Asks how far, and in which of the four cardinal directions, Ctrl+D
(DiagramView::duplicate(), bugtracker #991) should offset a copy from
its source. Shown once, then remembered: the answer is stored in
QSettings and reused by every later Ctrl+D press without asking
again, until this dialog is reopened deliberately.
*/
class DuplicateOffsetDialog : public QDialog
{
Q_OBJECT
public:
enum Direction { Up, Down, Left, Right };
explicit DuplicateOffsetDialog(QWidget *parent = nullptr);
/// The offset in grid steps, positive along X to the right
/// and positive along Y downward -- QET's own scene axes,
/// matching the sign convention setPos() already uses
/// everywhere else in this codebase.
QPoint stepOffset() const;
/// Reads the last-confirmed spacing/direction from QSettings,
/// or the default (1 step, right) if none was ever set.
static QPoint savedStepOffset();
/// Writes @p steps to QSettings, in the same X/Y convention
/// as stepOffset().
static void saveStepOffset(const QPoint &steps);
/// Whether a direction/spacing has already been confirmed
/// once, i.e. whether Ctrl+D can skip the dialog.
static bool hasSavedStepOffset();
private:
QSpinBox *m_spacing = nullptr;
QComboBox *m_direction = nullptr;
};
#endif // DUPLICATEOFFSETDIALOG_H