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Fig bug 1966: uncontrollable scrolling

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@10623 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Martin Vermeer 2005-11-26 20:28:38 +00:00
parent d9e6e32961
commit 9beb07356b
2 changed files with 16 additions and 2 deletions
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5
src/frontends/qt2/ChangeLog
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@ -1,3 +1,8 @@
2005-10-07 Martin Vermeer <martin.vermeer@hut.fi>
* QContentPane.C: Fix bug 1966: uncontrollable scrolling
2005-10-19 Angus Leeming <leeming@lyx.org>
* lyx_gui.C (LApplication d-tor): remove code to unlock

13
src/frontends/qt2/QContentPane.C
View File

@ -75,6 +75,8 @@ mouse_button::state q_motion_state(Qt::ButtonState state)
} // namespace anon
// This is a 'heartbeat' generating synthetic mouse move events when the
// 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)
@ -195,11 +197,18 @@ void QContentPane::mouseReleaseEvent(QMouseEvent * e)
void QContentPane::mouseMoveEvent(QMouseEvent * e)
{
FuncRequest const cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
FuncRequest cmd(LFUN_MOUSE_MOTION, e->x(), e->y(),
q_motion_state(e->state()));
// If we're above or below the work area...
if (e->y() <= 0 || e->y() >= height()) {
if (e->y() <= 20 || e->y() >= height() - 20) {
// Make sure only a synthetic event can cause a page scroll,
// so they come at a steady rate:
if (e->y() <= 20)
// _Force_ a scroll up:
cmd.y = -40;
else
cmd.y = height();
// Store the event, to be handled when the timeout expires.
synthetic_mouse_event_.cmd = cmd;