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paint in parent coords, do events in local coords

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this makes clicking on the window previews accurate (e.g. clicking at the top of them works)
also some code consistency when iterating over the collections and some cleanups
This commit is contained in:
Aaron Seigo 2011-07-11 21:46:34 +02:00
parent 9021634a1a
commit 2e0b653b48
1 changed files with 24 additions and 27 deletions
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51
private/windowpreview.cpp
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@ -133,8 +133,9 @@ bool WindowPreview::highlightWindows() const
void WindowPreview::setInfo()
{
QWidget *w = parentWidget();
if (isEmpty()) {
WindowEffects::showWindowThumbnails(parentWidget()->winId());
WindowEffects::showWindowThumbnails(w->winId());
return;
}
@ -143,11 +144,11 @@ void WindowPreview::setInfo()
}
if (windowSizes.size() == 0) {
WindowEffects::showWindowThumbnails(parentWidget()->winId());
WindowEffects::showWindowThumbnails(w->winId());
return;
}
Q_ASSERT(parentWidget()->isWindow()); // parent must be toplevel
Q_ASSERT(w->isWindow()); // parent must be toplevel
QSize thumbnailSize = sizeHint();
thumbnailSize.scale(size(), Qt::KeepAspectRatio);
@ -155,21 +156,24 @@ void WindowPreview::setInfo()
qreal left, top, right, bottom;
m_background->getMargins(left, top, right, bottom);
QRect thumbnailRect = geometry().adjusted(left, top, -right, -bottom);
const QRect thumbnailRect(QPoint(left, top), size() - QSize(left + right, top + bottom));
const int numWindows = ids.size();
const qreal thumbWidth = (thumbnailRect.width() - WINDOW_MARGIN*(numWindows - 1)) / numWindows;
// we paint in parent coords, but accept events in local coords
QList<QRect> inParentCoords;
m_thumbnailRects.clear();
int x = thumbnailRect.x();
int x = thumbnailRect.x();
foreach (QSize s, windowSizes) {
s.scale((qreal)(thumbnailRect.width()-WINDOW_MARGIN*(numWindows-1))/numWindows, thumbnailRect.height(), Qt::KeepAspectRatio);
s.scale(thumbWidth, thumbnailRect.height(), Qt::KeepAspectRatio);
int y = thumbnailRect.y() + (thumbnailRect.height() - s.height())/2;
m_thumbnailRects.append(QRect(QPoint(x,y), s));
m_thumbnailRects.append(QRect(QPoint(x, y), s));
inParentCoords.append(QRect(mapToParent(QPoint(x, y)), s));
x += s.width() + WINDOW_MARGIN;
}
WindowEffects::showWindowThumbnails(parentWidget()->winId(), ids, m_thumbnailRects);
WindowEffects::showWindowThumbnails(w->winId(), ids, inParentCoords);
}
void WindowPreview::paintEvent(QPaintEvent *e)
@ -180,30 +184,24 @@ void WindowPreview::paintEvent(QPaintEvent *e)
qreal left, top, right, bottom;
m_background->getMargins(left, top, right, bottom);
const QSize delta(left + right, top + bottom);
const QPoint topLeft(left, top);
foreach (const QRect &r, m_thumbnailRects) {
//kWarning()<<r;
m_background->resizeFrame(r.size()+QSize(left+right, top+bottom));
m_background->paintFrame(&painter, r.topLeft()-pos()-QPoint(left,top));
m_background->resizeFrame(r.size() + delta);
m_background->paintFrame(&painter, r.topLeft() - topLeft);
}
}
void WindowPreview::mousePressEvent(QMouseEvent *event)
{
QPoint p = event->pos();
WId wid = 0;
for (int i = 0; i < m_thumbnailRects.size(); ++i) {
if (m_thumbnailRects[i].contains(p)) {
wid = ids[i];
break;
if (m_thumbnailRects[i].contains(event->pos())) {
emit windowPreviewClicked(ids[i], event->buttons(), event->modifiers(), event->globalPos());
return;
}
}
if (wid) {
emit windowPreviewClicked(wid, event->buttons(), event->modifiers(), event->globalPos());
}
}
void WindowPreview::mouseMoveEvent(QMouseEvent *event)
@ -212,14 +210,13 @@ void WindowPreview::mouseMoveEvent(QMouseEvent *event)
return;
}
int i = 0;
foreach (const QRect &rect, m_thumbnailRects) {
if (rect.contains(event->pos())) {
WindowEffects::highlightWindows(effectiveWinId(), QList<WId>()<<effectiveWinId()<<ids[i]);
for (int i = 0; i < m_thumbnailRects.size(); ++i) {
if (m_thumbnailRects[i].contains(event->pos())) {
WindowEffects::highlightWindows(effectiveWinId(), QList<WId>() << effectiveWinId() << ids[i]);
return;
}
++i;
}
WindowEffects::highlightWindows(effectiveWinId(), QList<WId>());
}