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ensure disjunct screenedges on overlapping screens

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If two or more screens overlap (partially or fully)
we must not create double edges since kwin would
trigger both - since they've the same actions bound
(for sure) the action will called twice (so either
eg. toggle or skip one VD etc.)

BUG: 338381
REVIEW: 120060
This commit is contained in:
Thomas Lübking 2014-09-04 21:13:55 +02:00
parent 66df3eefdf
commit ec8f7e1fac
1 changed files with 20 additions and 16 deletions
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36
screenedge.cpp
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@ -872,23 +872,27 @@ void ScreenEdges::recreateEdges()
QList<Edge*> oldEdges(m_edges);
m_edges.clear();
const QRect fullArea(0, 0, displayWidth(), displayHeight());
QRegion processedRegion;
for (int i=0; i<screens()->count(); ++i) {
const QRect screen = screens()->geometry(i);
if (isLeftScreen(screen, fullArea)) {
// left most screen
createVerticalEdge(ElectricLeft, screen, fullArea);
}
if (isRightScreen(screen, fullArea)) {
// right most screen
createVerticalEdge(ElectricRight, screen, fullArea);
}
if (isTopScreen(screen, fullArea)) {
// top most screen
createHorizontalEdge(ElectricTop, screen, fullArea);
}
if (isBottomScreen(screen, fullArea)) {
// bottom most screen
createHorizontalEdge(ElectricBottom, screen, fullArea);
const QRegion screen = QRegion(screens()->geometry(i)).subtracted(processedRegion);
processedRegion += screen;
Q_FOREACH (const QRect &screenPart, screen.rects()) {
if (isLeftScreen(screenPart, fullArea)) {
// left most screen
createVerticalEdge(ElectricLeft, screenPart, fullArea);
}
if (isRightScreen(screenPart, fullArea)) {
// right most screen
createVerticalEdge(ElectricRight, screenPart, fullArea);
}
if (isTopScreen(screenPart, fullArea)) {
// top most screen
createHorizontalEdge(ElectricTop, screenPart, fullArea);
}
if (isBottomScreen(screenPart, fullArea)) {
// bottom most screen
createHorizontalEdge(ElectricBottom, screenPart, fullArea);
}
}
}
// copy over the effect/script reservations from the old edges