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add a little bit of snapping to the rotate at 90 degree intervals

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svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=738148
This commit is contained in:
Aaron J. Seigo 2007-11-18 02:37:30 +00:00
parent fa25221352
commit db730a36d9
1 changed files with 7 additions and 0 deletions
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7
applethandle.cpp
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@ -230,6 +230,8 @@ qreal _k_angleForPoints(const QPointF &center, const QPointF &pt1, const QPointF
void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
static const qreal snapAngle = 3.14159 / 2.0;
if (m_pressedButton == MoveButton) {
QPointF delta = event->pos()-event->lastPos();
setPos(pos()+delta);
@ -244,6 +246,11 @@ void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
QPointF center = rect.center();
m_angle = _k_angleForPoints(center, pressPos, event->pos());
if (fabs(remainder(m_angle, snapAngle)) < 0.15) {
m_angle = m_angle - remainder(m_angle, snapAngle);
}
m_scale = _k_distanceForPoint(event->pos()-center) / _k_distanceForPoint(pressPos-center);
QTransform matrix;