void Navigator::setScoreView(ScoreView* v)
{
if (_cv) {
disconnect(this, SIGNAL(viewRectMoved(const QRectF&)), _cv, SLOT(setViewRect(const QRectF&)));
disconnect(_cv, SIGNAL(viewRectChanged()), this, SLOT(updateViewRect()));
}
_cv = QPointer<ScoreView>(v);
if (v) {
_score = v->score();
rescale();
connect(this, SIGNAL(viewRectMoved(const QRectF&)), v, SLOT(setViewRect(const QRectF&)));
connect(_cv, SIGNAL(viewRectChanged()), this, SLOT(updateViewRect()));
rescale();
updateViewRect();
}
else {
/**
* You should use this function instead of calling scale() directly
* to keep track of the zoom factor.
* @param zoom new zoom factor
*/
void CanvasView::setZoom(qreal zoom)
{
if(zoom<=0)
return;
_zoom = zoom;
QMatrix nm(1,0,0,1, matrix().dx(), matrix().dy());
nm.scale(_zoom/100.0, _zoom/100.0);
nm.rotate(_rotate);
setMatrix(nm);
emit viewTransformed(_zoom, _rotate);
viewRectChanged();
}
void CanvasView::setCanvas(drawingboard::CanvasScene *scene)
{
_scene = scene;
_toolbox.setScene(scene);
setScene(scene);
connect(_scene, &drawingboard::CanvasScene::canvasInitialized, [this]() {
viewRectChanged();
});
connect(_scene, &drawingboard::CanvasScene::canvasResized, [this](int xoff, int yoff, const QSize &oldsize) {
if(oldsize.isEmpty()) {
centerOn(_scene->sceneRect().center());
} else {
scrollContentsBy(-xoff, -yoff);
}
});
}
void CanvasView::resizeEvent(QResizeEvent *event)
{
QGraphicsView::resizeEvent(event);
viewRectChanged();
}
void CanvasView::scrollContentsBy(int dx, int dy)
{
QGraphicsView::scrollContentsBy(dx, dy);
viewRectChanged();
}
