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zoom effect: fix xcursor loading, implement cursor scaling for XRender

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This commit is contained in:
Thomas Lübking 2011-06-30 21:06:17 +02:00
parent 42aac88f1b
commit a1b110634f
1 changed files with 38 additions and 24 deletions
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62
effects/zoom/zoom.cpp
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@ -24,6 +24,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QtDebug>
#include <QtGui/QX11Info>
#include <QtGui/QApplication>
#include <QtGui/QStyle>
@ -168,27 +169,17 @@ void ZoomEffect::recreateTexture()
QString theme = mousecfg.readEntry("cursorTheme", QString());
QString size = mousecfg.readEntry("cursorSize", QString());
// try to find the to the theme-name matching cursor-directory.
QByteArray themePath;
foreach (const QString & baseDir, QString(XcursorLibraryPath()).split(':', QString::SkipEmptyParts)) {
QDir dir(baseDir);
if (!dir.exists()) continue;
if (!theme.isEmpty() && dir.cd(theme)) {
themePath = QFile::encodeName(dir.absolutePath());
break; // theme found, job is done and we can abort the search now
}
if (dir.cd("default")) // default is better then nothing, so keep it as backup
themePath = QFile::encodeName(dir.absolutePath());
}
// fetch a reasonable size for the cursor-theme image
bool ok;
int iconSize = size.toInt(&ok);
if (!ok)
iconSize = QApplication::style()->pixelMetric(QStyle::PM_LargeIconSize);
iconSize = nominalCursorSize(iconSize);
// load the cursor-theme image from the Xcursor-library
XcursorImage *ximg = XcursorLibraryLoadImage("left_ptr", themePath, nominalCursorSize(iconSize));
XcursorImage *ximg = XcursorLibraryLoadImage("left_ptr", theme.toLocal8Bit(), iconSize);
if (!ximg) // default is better then nothing, so keep it as backup
ximg = XcursorLibraryLoadImage("left_ptr", "default", iconSize);
if (ximg) {
// turn the XcursorImage into a QImage that will be used to create the GLTexture/XRenderPicture.
imageWidth = ximg->width;
@ -204,6 +195,10 @@ void ZoomEffect::recreateTexture()
#endif
XcursorImageDestroy(ximg);
}
else {
qDebug() << "Loading cursor image (" << theme << ") FAILED -> falling back to proportional mouse tracking!";
mouseTracking = MouseTrackingProportional;
}
}
void ZoomEffect::reconfigure(ReconfigureFlags)
@ -254,6 +249,15 @@ void ZoomEffect::prePaintScreen(ScreenPrePaintData& data, int time)
effects->prePaintScreen(data, time);
}
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
static XTransform xrenderIdentity = {{
{ XDoubleToFixed( 1.0 ), XDoubleToFixed( 0.0 ), XDoubleToFixed( 0.0 ) },
{ XDoubleToFixed( 0.0 ), XDoubleToFixed( 1.0 ), XDoubleToFixed( 0.0 ) },
{ XDoubleToFixed( 0.0 ), XDoubleToFixed( 0.0 ), XDoubleToFixed( 1.0 ) }
}};
#endif
void ZoomEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
{
if (zoom != 1.0) {
@ -323,14 +327,6 @@ void ZoomEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
// Draw the mouse-texture at the position matching to zoomed-in image of the desktop. Hiding the
// previous mouse-cursor and drawing our own fake mouse-cursor is needed to be able to scale the
// mouse-cursor up and to re-position those mouse-cursor to match to the chosen zoom-level.
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if (texture) {
#ifndef KWIN_HAVE_OPENGLES
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT);
#endif
texture->bind();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
int w = imageWidth;
int h = imageHeight;
if (mousePointer == MousePointerScale) {
@ -339,6 +335,15 @@ void ZoomEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
}
QPoint p = QCursor::pos();
QRect rect(p.x() * zoom + data.xTranslate, p.y() * zoom + data.yTranslate, w, h);
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if (texture) {
#ifndef KWIN_HAVE_OPENGLES
glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT);
#endif
texture->bind();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
texture->render(region, rect);
texture->unbind();
glDisable(GL_BLEND);
@ -349,9 +354,18 @@ void ZoomEffect::paintScreen(int mask, QRegion region, ScreenPaintData& data)
#endif
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
if (xrenderPicture) {
QPoint p = QCursor::pos();
QRect rect(p.x() * zoom + data.xTranslate, p.y() * zoom + data.yTranslate, imageWidth, imageHeight);
if (mousePointer == MousePointerScale) {
XRenderSetPictureFilter(display(), *xrenderPicture, const_cast<char*>("good"), NULL, 0);
XTransform xform = {{
{ XDoubleToFixed( 1.0 / zoom ), XDoubleToFixed( 0.0 ), XDoubleToFixed( 0.0 ) },
{ XDoubleToFixed( 0.0 ), XDoubleToFixed( 1.0 / zoom ), XDoubleToFixed( 0.0 ) },
{ XDoubleToFixed( 0.0 ), XDoubleToFixed( 0.0 ), XDoubleToFixed( 1.0 ) }
}};
XRenderSetPictureTransform( display(), *xrenderPicture, &xform );
}
XRenderComposite(display(), PictOpOver, *xrenderPicture, None, effects->xrenderBufferPicture(), 0, 0, 0, 0, rect.x(), rect.y(), rect.width(), rect.height());
if (mousePointer == MousePointerScale)
XRenderSetPictureTransform( display(), *xrenderPicture, &xrenderIdentity );
}
#endif
}