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Code Issues Actions 4 Packages Projects Releases Wiki Activity

Graph improvements (#500)

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* Add antialiasing to graphview
* Make panning speed up/slow down with current zoom
* Made scrolling proportional to zoom level
This commit is contained in:
Xaltonon 2018-05-21 10:33:46 -07:00 committed by xarkes
parent 8ac598f992
commit 55be4efb8c
2 changed files with 16 additions and 2 deletions
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17
src/widgets/GraphView.cpp
View File

@ -411,6 +411,9 @@ void GraphView::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainter p(viewport());
p.setRenderHint(QPainter::Antialiasing);
int render_offset_x = -horizontalScrollBar()->value() * current_scale;
int render_offset_y = -verticalScrollBar()->value() * current_scale;
int render_width = viewport()->size().width() / current_scale;
@ -861,8 +864,8 @@ void GraphView::mouseMoveEvent(QMouseEvent *event)
int y_delta = scroll_base_y - event->y();
scroll_base_x = event->x();
scroll_base_y = event->y();
horizontalScrollBar()->setValue(horizontalScrollBar()->value() + x_delta);
verticalScrollBar()->setValue(verticalScrollBar()->value() + y_delta);
horizontalScrollBar()->setValue(horizontalScrollBar()->value() + x_delta * (1/current_scale));
verticalScrollBar()->setValue(verticalScrollBar()->value() + y_delta * (1/current_scale));
}
}
@ -903,3 +906,13 @@ void GraphView::mouseReleaseEvent(QMouseEvent *event)
viewport()->releaseMouse();
}
}
void GraphView::wheelEvent(QWheelEvent *event)
{
const QPoint delta = -event->angleDelta();
int x_delta = delta.x();
int y_delta = delta.y();
horizontalScrollBar()->setValue(horizontalScrollBar()->value() + x_delta * (1/current_scale));
verticalScrollBar()->setValue(verticalScrollBar()->value() + y_delta * (1/current_scale));
event->accept();
}

1
src/widgets/GraphView.h
View File

@ -121,6 +121,7 @@ protected:
virtual void blockHelpEvent(GraphView::GraphBlock &block, QHelpEvent *event, QPoint pos);
virtual bool helpEvent(QHelpEvent *event);
virtual void blockTransitionedTo(GraphView::GraphBlock *to);
virtual void wheelEvent(QWheelEvent *event) override;
virtual EdgeConfiguration edgeConfiguration(GraphView::GraphBlock &from, GraphView::GraphBlock *to);
void adjustSize(int new_width, int new_height, QPoint mouse = QPoint(0, 0));