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Simple fix for bug 4464

Browse Source 
http://www.lyx.org/trac/ticket/4464

Thanks to Vincent for showing the way.



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@29394 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Abdelrazak Younes 2009-04-24 21:04:51 +00:00
parent 26b1c55e03
commit 3a502dfbec
2 changed files with 17 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/frontends/qt4/GuiWorkArea.cpp
View File

@ -231,7 +231,7 @@ private:
// cursor is at the top or bottom edge of the viewport. One scroll per 0.2 s
SyntheticMouseEvent::SyntheticMouseEvent()
: timeout(200), restart_timeout(true),
x_old(-1), y_old(-1), scrollbar_value_old(-1.0)
x_old(-1), y_old(-1), min_scrollbar_old(-1.0), max_scrollbar_old(-1.0)
{}
@ -787,10 +787,10 @@ void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
// Has anything changed on-screen since the last QMouseEvent
// was received?
double const scrollbar_value = verticalScrollBar()->value();
if (e->x() == synthetic_mouse_event_.x_old
&& e->y() == synthetic_mouse_event_.y_old
&& scrollbar_value == synthetic_mouse_event_.scrollbar_value_old) {
&& synthetic_mouse_event_.min_scrollbar_old == verticalScrollBar()->minimum()
&& synthetic_mouse_event_.max_scrollbar_old == verticalScrollBar()->maximum()) {
// Nothing changed on-screen since the last QMouseEvent.
return;
}
@ -798,7 +798,8 @@ void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
// Yes something has changed. Store the params used to check this.
synthetic_mouse_event_.x_old = e->x();
synthetic_mouse_event_.y_old = e->y();
synthetic_mouse_event_.scrollbar_value_old = scrollbar_value;
synthetic_mouse_event_.min_scrollbar_old = verticalScrollBar()->minimum();
synthetic_mouse_event_.max_scrollbar_old = verticalScrollBar()->maximum();
// ... and dispatch the event to the LyX core.
dispatch(cmd);
@ -846,14 +847,17 @@ void GuiWorkArea::generateSyntheticMouseEvent()
// Has anything changed on-screen since the last timeout signal
// was received?
double const scrollbar_value = verticalScrollBar()->value();
if (scrollbar_value != synthetic_mouse_event_.scrollbar_value_old) {
// Yes it has. Store the params used to check this.
synthetic_mouse_event_.scrollbar_value_old = scrollbar_value;
// ... and dispatch the event to the LyX core.
dispatch(synthetic_mouse_event_.cmd);
int const min_scrollbar = verticalScrollBar()->minimum();
int const max_scrollbar = verticalScrollBar()->maximum();
if (min_scrollbar == synthetic_mouse_event_.min_scrollbar_old
&& max_scrollbar == synthetic_mouse_event_.max_scrollbar_old) {
return;
}
// Yes it has. Store the params used to check this.
synthetic_mouse_event_.min_scrollbar_old = min_scrollbar;
synthetic_mouse_event_.max_scrollbar_old = max_scrollbar;
// ... and dispatch the event to the LyX core.
dispatch(synthetic_mouse_event_.cmd);
}

3
src/frontends/qt4/GuiWorkArea.h
View File

@ -87,7 +87,8 @@ public:
bool restart_timeout;
int x_old;
int y_old;
double scrollbar_value_old;
int min_scrollbar_old;
int max_scrollbar_old;
};