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Control key modifiers for zoom

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This commit is contained in:
Mark Watkins 2011-08-29 09:58:59 +10:00
parent d1c717617a
commit 0a4cd5380c
1 changed files with 13 additions and 4 deletions
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17
Graphs/gGraphView.cpp
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@ -456,11 +456,16 @@ void gGraph::mouseReleaseEvent(QMouseEvent * event)
if ((m_graphview->horizTravel()<4) && (x>left+m_marginleft && x<w+m_marginleft+left && y>top+m_margintop && y<h)) { // normal click in main area
if (!m_blockzoom) {
double zoom;
if (event->button() & Qt::RightButton) {
ZoomX(1.33,x); // Zoom out
zoom=1.33;
if (event->modifiers() & Qt::ControlModifier) zoom*=1.5;
ZoomX(zoom,x); // Zoom out
return;
} else if (event->button() & Qt::LeftButton) {
ZoomX(0.75,x); // zoom in.
zoom=0.75;
if (event->modifiers() & Qt::ControlModifier) zoom/=1.5;
ZoomX(zoom,x); // zoom in.
return;
}
} else {
@ -475,11 +480,15 @@ void gGraph::mouseReleaseEvent(QMouseEvent * event)
xmult=qq/double(w);
if ((xx==qq) || (x==m_lastx23)) {
double zoom;
if (event->button() & Qt::RightButton) {
xx*=1.33;
zoom=1.33;
if (event->modifiers() & Qt::ControlModifier) zoom*=1.5;
} else if (event->button() & Qt::LeftButton) {
xx*=0.75;
zoom=0.75;
if (event->modifiers() & Qt::ControlModifier) zoom/=1.5;
}
xx*=zoom;
if (xx>qq) xx=qq;
}
double j1=xmult*x;