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63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*****************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
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You can Freely distribute this program under the GNU General Public
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License. See the file "COPYING" for the exact licensing terms.
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******************************************************************/
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#include "demo_showpicture.h"
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#include <kstandarddirs.h>
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#include <qimage.h>
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namespace KWin
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{
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KWIN_EFFECT(demo_showpicture, ShowPictureEffect)
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ShowPictureEffect::ShowPictureEffect()
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: init(true)
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, picture(NULL)
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{
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}
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ShowPictureEffect::~ShowPictureEffect()
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{
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delete picture;
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}
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void ShowPictureEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
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{
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effects->paintScreen(mask, region, data);
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if (init) {
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loadPicture();
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init = false;
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}
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if (picture && region.intersects(pictureRect)) {
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glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT);
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picture->bind();
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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picture->render(region, pictureRect);
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picture->unbind();
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glPopAttrib();
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}
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}
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void ShowPictureEffect::loadPicture()
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{
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QString file = KGlobal::dirs()->findResource("appdata", "showpicture.png");
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if (file.isEmpty())
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return;
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QImage im(file);
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QRect area = effects->clientArea(PlacementArea, effects->activeScreen(), effects->currentDesktop());
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picture = new GLTexture(im);
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pictureRect = QRect(area.x() + (area.width() - im.width()) / 2,
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area.y() + (area.height() - im.height()) / 2, im.width(), im.height());
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}
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} // namespace
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