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- Ported SadEagle's XShape support code from ksnapshot to the kwin

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window grabbing code.

svn path=/trunk/kdebase/kwin/; revision=205331
This commit is contained in:
Richard J. Moore 2003-02-06 23:11:27 +00:00
parent d4d96f7148
commit 59e2f7ef98
1 changed files with 35 additions and 0 deletions
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35
workspace.cpp
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@ -16,6 +16,7 @@ Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
#include <stdlib.h>
#include <qwhatsthis.h>
#include <qdatastream.h>
#include <qpainter.h>
#include <qregexp.h>
#include <qclipboard.h>
#include <kapplication.h>
@ -2998,6 +2999,40 @@ void Workspace::slotGrabWindow()
{
if ( active_client ) {
QPixmap p = QPixmap::grabWindow( active_client->winId() );
//No XShape - no work.
if (kwin_has_shape) {
//As the first step, get the mask from XShape.
int count, order;
XRectangle* rects = XShapeGetRectangles( qt_xdisplay(), active_client->winId(),
ShapeBounding, &count, &order);
//The ShapeBounding region is the outermost shape of the window;
//ShapeBounding - ShapeClipping is defined to be the border.
//Since the border area is part of the window, we use bounding
// to limit our work region
if (rects) {
//Create a QRegion from the rectangles describing the bounding mask.
QRegion contents;
for (int pos = 0; pos < count; pos++)
contents += QRegion(rects[pos].x, rects[pos].y,
rects[pos].width, rects[pos].height);
XFree(rects);
//Create the bounding box.
QRegion bbox(0, 0, p.width(), p.height());
//Get the masked away area.
QRegion maskedAway = bbox - contents;
QMemArray<QRect> maskedAwayRects = maskedAway.rects();
//Fill the masked away area with black.
QPainter p(&p);
for (uint pos = 0; pos < maskedAwayRects.count(); pos++)
p.fillRect(maskedAwayRects[pos], Qt::black);
p.end();
}
}
QClipboard *cb = QApplication::clipboard();
cb->setPixmap( p );
}