anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-11-26 03:11:59 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

#12434 add event handler for pinch-to-zoom gesture

Browse Source
This commit is contained in:
Stephan Witt 2022-01-03 07:37:03 +01:00
parent d4cfa5204c
commit d432403430
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/frontends/qt/GuiView.cpp
View File

@ -110,6 +110,8 @@
#include <QTimer> #include <QTimer>
#include <QUrl> #include <QUrl>
#include <QWindowStateChangeEvent> #include <QWindowStateChangeEvent>
#include <QGestureEvent>
#include <QPinchGesture>
// sync with GuiAlert.cpp // sync with GuiAlert.cpp
@ -694,6 +696,9 @@ GuiView::GuiView(int id)
connect(statusBar(), SIGNAL(customContextMenuRequested(QPoint)), connect(statusBar(), SIGNAL(customContextMenuRequested(QPoint)),
this, SLOT(showZoomContextMenu())); this, SLOT(showZoomContextMenu()));
// enable pinch to zoom
grabGesture(Qt::PinchGesture);
int const iconheight = max(int(d.normalIconSize), fm.height()); int const iconheight = max(int(d.normalIconSize), fm.height());
QSize const iconsize(iconheight, iconheight); QSize const iconsize(iconheight, iconheight);
@ -1621,6 +1626,21 @@ bool GuiView::event(QEvent * e)
return QMainWindow::event(e); return QMainWindow::event(e);
} }
case QEvent::Gesture: {
QGestureEvent *ge = static_cast<QGestureEvent*>(e);
QGesture *gp = ge->gesture(Qt::PinchGesture);
if (gp) {
QPinchGesture *pinch = static_cast<QPinchGesture *>(gp);
QPinchGesture::ChangeFlags changeFlags = pinch->changeFlags();
if (changeFlags & QPinchGesture::ScaleFactorChanged) {
qreal factor = lyxrc.currentZoom*pinch->scaleFactor();
//factor = ceil(factor/20)*20;
zoomValueChanged(factor);
}
}
return QMainWindow::event(e);
}
default: default:
return QMainWindow::event(e); return QMainWindow::event(e);
} }