daniel/QTeletextMaker
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Implement mosaic shifting

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When a selection box is dragged, holding Ctrl while pressing the arrow
keys will shift the mosaics one sixel at a time.

If a shifting sixel encounters a non-mosaic cell it will pass through to
the other side of it.
This commit is contained in:
G.K.MacGregor
2024-07-10 21:13:54 +01:00
parent 9045160d3a
commit d184c50246
4 changed files with 245 additions and 4 deletions
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51
mainwidget.cpp
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@@ -32,6 +32,7 @@
#include <QMimeData>
#include <QPainter>
#include <QPair>
#include <QSet>
#include <QUndoCommand>
#include <QWidget>
#include <vector>
@@ -318,6 +319,7 @@ void TeletextWidget::keyPressEvent(QKeyEvent *event)
setCharacter(mappedKeyPress);
return;
}
switch (event->key()) {
case Qt::Key_Backspace:
m_teletextDocument->undoStack()->push(new BackspaceKeyCommand(m_teletextDocument, m_insertMode));
@@ -333,16 +335,28 @@ void TeletextWidget::keyPressEvent(QKeyEvent *event)
break;
case Qt::Key_Up:
m_teletextDocument->cursorUp(event->modifiers() & Qt::ShiftModifier);
if (event->modifiers() & Qt::ControlModifier)
shiftMosaics(event->key());
else
m_teletextDocument->cursorUp(event->modifiers() & Qt::ShiftModifier);
break;
case Qt::Key_Down:
m_teletextDocument->cursorDown(event->modifiers() & Qt::ShiftModifier);
if (event->modifiers() & Qt::ControlModifier)
shiftMosaics(event->key());
else
m_teletextDocument->cursorDown(event->modifiers() & Qt::ShiftModifier);
break;
case Qt::Key_Left:
m_teletextDocument->cursorLeft(event->modifiers() & Qt::ShiftModifier);
if (event->modifiers() & Qt::ControlModifier)
shiftMosaics(event->key());
else
m_teletextDocument->cursorLeft(event->modifiers() & Qt::ShiftModifier);
break;
case Qt::Key_Right:
m_teletextDocument->cursorRight(event->modifiers() & Qt::ShiftModifier);
if (event->modifiers() & Qt::ControlModifier)
shiftMosaics(event->key());
else
m_teletextDocument->cursorRight(event->modifiers() & Qt::ShiftModifier);
break;
case Qt::Key_Return:
case Qt::Key_Enter:
@@ -377,6 +391,35 @@ void TeletextWidget::toggleCharacterBit(unsigned char bitToToggle)
m_teletextDocument->undoStack()->push(new ToggleMosaicBitCommand(m_teletextDocument, bitToToggle));
}
void TeletextWidget::shiftMosaics(int key)
{
if (!m_teletextDocument->selectionActive())
return;
QSet<QPair<int, int>> mosaicList;
for (int r=m_teletextDocument->selectionTopRow(); r<=m_teletextDocument->selectionBottomRow(); r++)
for (int c=m_teletextDocument->selectionLeftColumn(); c<=m_teletextDocument->selectionRightColumn(); c++)
if (m_pageDecode.level1MosaicChar(r, c))
mosaicList.insert(qMakePair(r, c));
if (!mosaicList.isEmpty())
switch (key) {
case Qt::Key_Up:
m_teletextDocument->undoStack()->push(new ShiftMosaicsUpCommand(m_teletextDocument, mosaicList));
break;
case Qt::Key_Down:
m_teletextDocument->undoStack()->push(new ShiftMosaicsDownCommand(m_teletextDocument, mosaicList));
break;
case Qt::Key_Left:
m_teletextDocument->undoStack()->push(new ShiftMosaicsLeftCommand(m_teletextDocument, mosaicList));
break;
case Qt::Key_Right:
m_teletextDocument->undoStack()->push(new ShiftMosaicsRightCommand(m_teletextDocument, mosaicList));
break;
}
}
void TeletextWidget::selectionToClipboard()
{
QByteArray nativeData;