Diffstat (limited to 'noncore/graphics/drawpad/drawpadcanvas.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/graphics/drawpad/drawpadcanvas.cpp | 135 |
1 files changed, 108 insertions, 27 deletions
diff --git a/noncore/graphics/drawpad/drawpadcanvas.cpp b/noncore/graphics/drawpad/drawpadcanvas.cpp index f02f478..08f7b66 100644 --- a/noncore/graphics/drawpad/drawpadcanvas.cpp +++ b/noncore/graphics/drawpad/drawpadcanvas.cpp @@ -134,64 +134,69 @@ bool DrawPadCanvasXmlHandler::characters(const QString& ch) m_pixmaps.append(pixmap); } return true; } DrawPadCanvas::DrawPadCanvas(DrawPad* drawPad, QWidget* parent, const char* name, WFlags f) : QWidget(parent, name, f) { setBackgroundMode(QWidget::PaletteBase); m_pDrawPad = drawPad; - m_buffers.setAutoDelete(true); - m_buffers.append(new QPixmap(width(), height())); - m_buffers.current()->fill(Qt::white); + m_pages.setAutoDelete(true); + m_pages.append(new QPixmap(width(), height())); + m_pages.current()->fill(Qt::white); + m_pageBackups.setAutoDelete(true); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); } DrawPadCanvas::~DrawPadCanvas() { } void DrawPadCanvas::load(QIODevice* ioDevice) { QTextStream textStream(ioDevice); textStream.setCodec(QTextCodec::codecForName("UTF-8")); QXmlInputSource xmlInputSource(textStream); QXmlSimpleReader xmlSimpleReader; DrawPadCanvasXmlHandler drawPadCanvasXmlHandler; xmlSimpleReader.setContentHandler(&drawPadCanvasXmlHandler); xmlSimpleReader.parse(xmlInputSource); - m_buffers = drawPadCanvasXmlHandler.pixmaps(); + m_pages = drawPadCanvasXmlHandler.pixmaps(); - if (m_buffers.isEmpty()) { - m_buffers.append(new QPixmap(width(), height())); - m_buffers.current()->fill(Qt::white); + if (m_pages.isEmpty()) { + m_pages.append(new QPixmap(width(), height())); + m_pages.current()->fill(Qt::white); } + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); + repaint(); } void DrawPadCanvas::save(QIODevice* ioDevice) { QTextStream textStream(ioDevice); textStream.setCodec(QTextCodec::codecForName("UTF-8")); textStream << "<drawpad>" << endl; textStream << " <images>" << endl; - QListIterator<QPixmap> bufferIterator(m_buffers); + QListIterator<QPixmap> bufferIterator(m_pages); for (bufferIterator.toFirst(); bufferIterator.current() != 0; ++bufferIterator) { textStream << " <image>" << endl; QImage image = bufferIterator.current()->convertToImage(); QByteArray byteArray; QBuffer buffer(byteArray); QImageIO imageIO(&buffer, "XPM"); buffer.open(IO_WriteOnly); imageIO.setImage(image); imageIO.write(); @@ -212,128 +217,204 @@ void DrawPadCanvas::save(QIODevice* ioDevice) } textStream << "</data>" << endl; textStream << " </image>" << endl; } textStream << " </images>" << endl; textStream << "</drawpad>"; } QPixmap* DrawPadCanvas::currentPage() { - return m_buffers.current(); + return m_pages.current(); } void DrawPadCanvas::clearAll() { - m_buffers.clear(); + m_pages.clear(); + + m_pages.append(new QPixmap(width(), height())); + m_pages.current()->fill(Qt::white); - m_buffers.append(new QPixmap(width(), height())); - m_buffers.current()->fill(Qt::white); + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); } void DrawPadCanvas::newPage() { - m_buffers.insert(m_buffers.at() + 1, new QPixmap(width(), height())); - m_buffers.current()->fill(Qt::white); + m_pages.insert(m_pages.at() + 1, new QPixmap(width(), height())); + m_pages.current()->fill(Qt::white); + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); } void DrawPadCanvas::clearPage() { - m_buffers.current()->fill(Qt::white); + m_pages.current()->fill(Qt::white); repaint(); } void DrawPadCanvas::deletePage() { - m_buffers.remove(m_buffers.current()); + m_pages.remove(m_pages.current()); - if (m_buffers.isEmpty()) { - m_buffers.append(new QPixmap(width(), height())); - m_buffers.current()->fill(Qt::white); + if (m_pages.isEmpty()) { + m_pages.append(new QPixmap(width(), height())); + m_pages.current()->fill(Qt::white); } + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); + repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); +} + +bool DrawPadCanvas::undoEnabled() +{ + return (m_pageBackups.current() != m_pageBackups.getFirst()); +} + +bool DrawPadCanvas::redoEnabled() +{ + return (m_pageBackups.current() != m_pageBackups.getLast()); } bool DrawPadCanvas::goPreviousPageEnabled() { - return (m_buffers.current() != m_buffers.getFirst()); + return (m_pages.current() != m_pages.getFirst()); } bool DrawPadCanvas::goNextPageEnabled() { - return (m_buffers.current() != m_buffers.getLast()); + return (m_pages.current() != m_pages.getLast()); +} + +void DrawPadCanvas::undo() +{ + *(m_pages.current()) = *(m_pageBackups.prev()); + repaint(); + + emit pageBackupsChanged(); +} + +void DrawPadCanvas::redo() +{ + *(m_pages.current()) = *(m_pageBackups.next()); + repaint(); + + emit pageBackupsChanged(); } void DrawPadCanvas::goFirstPage() { - m_buffers.first(); + m_pages.first(); + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); } void DrawPadCanvas::goPreviousPage() { - m_buffers.prev(); + m_pages.prev(); + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); } void DrawPadCanvas::goNextPage() { - m_buffers.next(); + m_pages.next(); + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); } void DrawPadCanvas::goLastPage() { - m_buffers.last(); + m_pages.last(); + m_pageBackups.clear(); + m_pageBackups.append(new QPixmap(*(m_pages.current()))); repaint(); + + emit pagesChanged(); + emit pageBackupsChanged(); } void DrawPadCanvas::mousePressEvent(QMouseEvent* e) { m_pDrawPad->drawMode()->mousePressEvent(e); } void DrawPadCanvas::mouseReleaseEvent(QMouseEvent* e) { m_pDrawPad->drawMode()->mouseReleaseEvent(e); + + QPixmap* currentBackup = m_pageBackups.current(); + while (m_pageBackups.last() != currentBackup) { + m_pageBackups.removeLast(); + } + + while (m_pageBackups.count() >= (5 + 1)) { + m_pageBackups.removeFirst(); + } + + m_pageBackups.append(new QPixmap(*(m_pages.current()))); + + emit pageBackupsChanged(); } void DrawPadCanvas::mouseMoveEvent(QMouseEvent* e) { m_pDrawPad->drawMode()->mouseMoveEvent(e); } void DrawPadCanvas::resizeEvent(QResizeEvent* e) { QWidget::resizeEvent(e); - QListIterator<QPixmap> bufferIterator(m_buffers); + QListIterator<QPixmap> bufferIterator(m_pages); for (bufferIterator.toFirst(); bufferIterator.current() != 0; ++bufferIterator) { int w = width() > bufferIterator.current()->width() ? width() : bufferIterator.current()->width(); int h = height() > bufferIterator.current()->height() ? height() : bufferIterator.current()->height(); QPixmap tmpPixmap(*(bufferIterator.current())); bufferIterator.current()->resize(w, h); bufferIterator.current()->fill(Qt::white); bitBlt(bufferIterator.current(), 0, 0, &tmpPixmap, 0, 0, tmpPixmap.width(), tmpPixmap.height()); } } void DrawPadCanvas::paintEvent(QPaintEvent* e) { QWidget::paintEvent(e); QArray<QRect> rects = e->region().rects(); for (uint i = 0; i < rects.count(); i++) { QRect r = rects[i]; - bitBlt(this, r.x(), r.y(), m_buffers.current(), r.x(), r.y(), r.width(), r.height()); + bitBlt(this, r.x(), r.y(), m_pages.current(), r.x(), r.y(), r.width(), r.height()); } } |