New QPainter based compositor called SceneQPainter
This compositor uses only the QPainter API to perform rendering. The window's X Pixmap is mapped to a QImage using XShm. As rendering backend a QImage is used. The new compositing type "QPainterCompositing" is introduced. Effects need to be adjusted to explicitly check the compositing type and no longer assume the compositing type is XRender if it's not OpenGL. This compositor can be selected with using "Q" as the value for KWIN_COMPOSE env variable or setting the config value to "QPainter". The GUI is not yet adjusted to select this compositor. The QPainter scene provides currently the following features: * 2D transformations (translation and scalation) * opacity modifications * rendering of decorations (new PaintRedirector sub class) * rendering of shadows * rendering of effect frames * rendering to a Wayland surface The following features are currently not provided: * saturation changes * brightness changes * 3D transformations * rendering to X Overlay window * offscreen rendering (e.g. needed for screen shot effect) * custom rendering in the effects to the current back buffer
This commit is contained in:
Martin Gräßlin
parent
59bb857c7b
commit
0c559c163d
9 changed files with 983 additions and 1 deletions
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@ -148,6 +148,7 @@ set(kwin_KDEINIT_SRCS
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scene.cpp
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scene_xrender.cpp
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scene_opengl.cpp
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scene_qpainter.cpp
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glxbackend.cpp
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thumbnailitem.cpp
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lanczosfilter.cpp
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@ -33,6 +33,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "scene.h"
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#include "scene_xrender.h"
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#include "scene_opengl.h"
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#include "scene_qpainter.h"
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#include "shadow.h"
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#include "useractions.h"
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#include "compositingprefs.h"
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@ -211,6 +212,10 @@ void Compositor::slotCompositingOptionsInitialized()
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m_scene = SceneXrender::createScene();
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break;
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#endif
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case QPainterCompositing:
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qDebug() << "Initializing QPainter compositing";
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m_scene = SceneQPainter::createScene();
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break;
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default:
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qDebug() << "No compositing enabled";
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m_starting = false;
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@ -816,6 +821,8 @@ QString Compositor::compositingType() const
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#else
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return QStringLiteral("gl2");
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#endif
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case QPainterCompositing:
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return "qpainter";
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case NoCompositing:
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default:
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return QStringLiteral("none");
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@ -47,6 +47,7 @@ enum CompositingType {
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**/
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OpenGLCompositing = 1,
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XRenderCompositing = 1<<1,
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QPainterCompositing = 1<< 2,
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OpenGL1Compositing = 1<<2 | OpenGLCompositing,
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OpenGL2Compositing = 1<<3 | OpenGLCompositing
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};
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@ -874,6 +874,8 @@ bool Options::loadCompositingConfig (bool force)
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QString compositingBackend = config.readEntry("Backend", "OpenGL");
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if (compositingBackend == QStringLiteral("XRender"))
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compositingMode = XRenderCompositing;
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else if (compositingBackend == "QPainter")
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compositingMode = QPainterCompositing;
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else
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compositingMode = OpenGLCompositing;
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@ -889,6 +891,11 @@ bool Options::loadCompositingConfig (bool force)
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compositingMode = XRenderCompositing;
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useCompositing = true;
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break;
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case 'Q':
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qDebug() << "Compositing forced to QPainter mode by environment variable";
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compositingMode = QPainterCompositing;
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useCompositing = true;
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break;
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case 'N':
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if (getenv("KDE_FAILSAFE"))
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qDebug() << "Compositing disabled forcefully by KDE failsafe mode";
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@ -43,9 +43,12 @@ PaintRedirector *PaintRedirector::create(Client *c, KDecoration *deco)
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{
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if (effects->isOpenGLCompositing()) {
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return new OpenGLPaintRedirector(c, deco);
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} else {
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} else if (effects->compositingType() == XRenderCompositing) {
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return new RasterXRenderPaintRedirector(c, deco);
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} else if (effects->compositingType() == QPainterCompositing) {
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return new QImagePaintRedirector(c, deco);
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}
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return NULL;
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}
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PaintRedirector::PaintRedirector(Client *c, KDecoration *deco)
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@ -267,6 +270,12 @@ xcb_render_picture_t PaintRedirector::picture(PaintRedirector::DecorationPixmap
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return XCB_RENDER_PICTURE_NONE;
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}
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const QImage *PaintRedirector::image(PaintRedirector::DecorationPixmap border) const
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{
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Q_UNUSED(border)
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return NULL;
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}
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void PaintRedirector::resize(DecorationPixmap border, const QSize &size)
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{
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Q_UNUSED(border)
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@ -469,6 +478,38 @@ void RasterXRenderPaintRedirector::paint(PaintRedirector::DecorationPixmap borde
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img.width(), img.height(), offset.x(), offset.y(), 0, 32, img.byteCount(), img.constBits());
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}
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QImagePaintRedirector::QImagePaintRedirector(Client *c, KDecoration *deco)
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: ImageBasedPaintRedirector(c, deco)
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{
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resizePixmaps();
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}
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QImagePaintRedirector::~QImagePaintRedirector()
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{
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}
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void QImagePaintRedirector::paint(PaintRedirector::DecorationPixmap border, const QRect &r, const QRect &b, const QRegion ®)
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{
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// clip the sub area
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const QRect bounding = reg.boundingRect();
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const QPoint offset = bounding.topLeft() - r.topLeft();
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QPainter painter(&m_images[border]);
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painter.setCompositionMode(QPainter::CompositionMode_Source);
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painter.drawImage(offset, scratchImage(), QRect(bounding.topLeft() - b.topLeft(), bounding.size()));
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}
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void QImagePaintRedirector::resize(PaintRedirector::DecorationPixmap border, const QSize &size)
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{
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m_images[border] = QImage(size, QImage::Format_ARGB32_Premultiplied);
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m_images[border].fill(Qt::transparent);
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}
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const QImage *QImagePaintRedirector::image(PaintRedirector::DecorationPixmap border) const
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{
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return &m_images[border];
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}
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} // namespace
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#include "paintredirector.moc"
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@ -96,6 +96,7 @@ protected:
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PaintRedirector(Client *c, KDecoration *deco);
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virtual xcb_render_picture_t picture(DecorationPixmap border) const;
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virtual GLTexture *texture(DecorationPixmap border) const;
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virtual const QImage *image(DecorationPixmap border) const;
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virtual void resizePixmaps(const QRect *rects);
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virtual void resize(DecorationPixmap border, const QSize &size);
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virtual void preparePaint(const QPixmap &pending);
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@ -182,6 +183,21 @@ private:
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QImage m_tempImage;
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};
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class QImagePaintRedirector : public ImageBasedPaintRedirector
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{
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Q_OBJECT
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public:
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QImagePaintRedirector(Client *c, KDecoration *deco);
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virtual ~QImagePaintRedirector();
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protected:
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virtual void resize(DecorationPixmap border, const QSize &size) override;
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virtual void paint(DecorationPixmap border, const QRect &r, const QRect &b, const QRegion ®) override;
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virtual const QImage* image(DecorationPixmap border) const override;
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private:
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QImage m_images[PixmapCount];
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};
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template <>
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inline
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GLTexture *PaintRedirector::bottomDecoPixmap() const
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@ -238,6 +254,34 @@ xcb_render_picture_t PaintRedirector::topDecoPixmap() const
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return picture(TopPixmap);
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}
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template <>
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inline
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const QImage *PaintRedirector::bottomDecoPixmap() const
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{
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return image(BottomPixmap);
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}
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template <>
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inline
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const QImage *PaintRedirector::leftDecoPixmap() const
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{
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return image(LeftPixmap);
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}
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template <>
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inline
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const QImage *PaintRedirector::rightDecoPixmap() const
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{
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return image(RightPixmap);
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}
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template <>
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inline
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const QImage *PaintRedirector::topDecoPixmap() const
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{
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return image(TopPixmap);
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}
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inline
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const QImage &ImageBasedPaintRedirector::scratchImage() const
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{
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615
scene_qpainter.cpp
Normal file
615
scene_qpainter.cpp
Normal file
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@ -0,0 +1,615 @@
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/********************************************************************
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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) 2013 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "scene_qpainter.h"
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// KWin
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#include "client.h"
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#include "composite.h"
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#include "deleted.h"
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#include "effects.h"
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#include "paintredirector.h"
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#include "toplevel.h"
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#ifdef WAYLAND_FOUND
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#include "wayland_backend.h"
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#endif
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#include "workspace.h"
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#include "xcbutils.h"
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// Qt
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#include <QDebug>
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#include <QPainter>
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namespace KWin
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{
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//****************************************
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// QPainterBackend
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//****************************************
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QPainterBackend::QPainterBackend()
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: m_failed(false)
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{
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}
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QPainterBackend::~QPainterBackend()
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{
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}
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bool QPainterBackend::isLastFrameRendered() const
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{
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return true;
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}
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OverlayWindow* QPainterBackend::overlayWindow()
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{
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return NULL;
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}
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void QPainterBackend::showOverlay()
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{
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}
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void QPainterBackend::screenGeometryChanged(const QSize &size)
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{
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Q_UNUSED(size)
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}
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void QPainterBackend::setFailed(const QString &reason)
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{
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qWarning() << "Creating the XRender backend failed: " << reason;
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m_failed = true;
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}
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#ifdef WAYLAND_FOUND
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//****************************************
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// WaylandQPainterBackend
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//****************************************
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static void handleFrameCallback(void *data, wl_callback *callback, uint32_t time)
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{
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Q_UNUSED(data)
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Q_UNUSED(time)
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reinterpret_cast<WaylandQPainterBackend*>(data)->lastFrameRendered();
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if (callback) {
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wl_callback_destroy(callback);
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}
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}
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static const struct wl_callback_listener s_surfaceFrameListener = {
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handleFrameCallback
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};
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WaylandQPainterBackend::WaylandQPainterBackend()
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: QPainterBackend()
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, m_lastFrameRendered(true)
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, m_needsFullRepaint(true)
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, m_backBuffer(QImage(QSize(displayWidth(), displayHeight()), QImage::Format_ARGB32_Premultiplied))
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, m_buffer(NULL)
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{
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connect(Wayland::WaylandBackend::self()->shmPool(), SIGNAL(poolResized()), SLOT(remapBuffer()));
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}
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WaylandQPainterBackend::~WaylandQPainterBackend()
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{
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if (m_buffer) {
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m_buffer->setUsed(false);
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}
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}
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bool WaylandQPainterBackend::isLastFrameRendered() const
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{
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return m_lastFrameRendered;
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}
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bool WaylandQPainterBackend::usesOverlayWindow() const
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{
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return false;
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}
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void WaylandQPainterBackend::present(int mask, const QRegion &damage)
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{
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Q_UNUSED(mask)
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Wayland::WaylandBackend *wl = Wayland::WaylandBackend::self();
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if (m_backBuffer.isNull()) {
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return;
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}
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m_lastFrameRendered = false;
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m_needsFullRepaint = false;
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wl_surface *surface = wl->surface();
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wl_callback *callback = wl_surface_frame(surface);
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wl_callback_add_listener(callback, &s_surfaceFrameListener, this);
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wl_surface_attach(surface, m_buffer->buffer(), 0, 0);
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Q_FOREACH (const QRect &rect, damage.rects()) {
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wl_surface_damage(surface, rect.x(), rect.y(), rect.width(), rect.height());
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}
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wl_surface_commit(surface);
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wl->dispatchEvents();
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}
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void WaylandQPainterBackend::lastFrameRendered()
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{
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m_lastFrameRendered = true;
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Compositor::self()->lastFrameRendered();
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}
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void WaylandQPainterBackend::screenGeometryChanged(const QSize &size)
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{
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Q_UNUSED(size)
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m_buffer->setUsed(false);
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m_buffer = NULL;
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}
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QImage *WaylandQPainterBackend::buffer()
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{
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return &m_backBuffer;
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}
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void WaylandQPainterBackend::prepareRenderingFrame()
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{
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if (m_buffer) {
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if (m_buffer->isReleased()) {
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// we can re-use this buffer
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m_buffer->setReleased(false);
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return;
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} else {
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// buffer is still in use, get a new one
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m_buffer->setUsed(false);
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}
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}
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m_buffer = NULL;
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const QSize size(displayWidth(), displayHeight());
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m_buffer = Wayland::WaylandBackend::self()->shmPool()->getBuffer(size, size.width() * 4);
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if (!m_buffer) {
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qDebug() << "Did not get a new Buffer from Shm Pool";
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m_backBuffer = QImage();
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return;
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}
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m_buffer->setUsed(true);
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m_backBuffer = QImage(m_buffer->address(), size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
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m_backBuffer.fill(Qt::transparent);
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m_needsFullRepaint = true;
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qDebug() << "Created a new back buffer";
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}
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void WaylandQPainterBackend::remapBuffer()
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{
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if (!m_buffer || !m_buffer->isUsed()) {
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return;
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}
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const QSize size = m_backBuffer.size();
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m_backBuffer = QImage(m_buffer->address(), size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
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qDebug() << "Remapped our back buffer";
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}
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bool WaylandQPainterBackend::needsFullRepaint() const
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{
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return m_needsFullRepaint;
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}
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#endif
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//****************************************
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// SceneQPainter
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//****************************************
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SceneQPainter *SceneQPainter::createScene()
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{
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QScopedPointer<QPainterBackend> backend;
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#ifdef WAYLAND_FOUND
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if (Wayland::WaylandBackend::self()) {
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backend.reset(new WaylandQPainterBackend);
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if (backend->isFailed()) {
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return NULL;
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}
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return new SceneQPainter(backend.take());
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}
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#endif
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return NULL;
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}
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SceneQPainter::SceneQPainter(QPainterBackend* backend)
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: Scene(Workspace::self())
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, m_backend(backend)
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, m_painter(new QPainter())
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{
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}
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SceneQPainter::~SceneQPainter()
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{
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}
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CompositingType SceneQPainter::compositingType() const
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{
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return QPainterCompositing;
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}
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bool SceneQPainter::initFailed() const
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{
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return false;
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}
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void SceneQPainter::paintGenericScreen(int mask, ScreenPaintData data)
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{
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m_painter->save();
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m_painter->translate(data.xTranslation(), data.yTranslation());
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m_painter->scale(data.xScale(), data.yScale());
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Scene::paintGenericScreen(mask, data);
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m_painter->restore();
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}
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qint64 SceneQPainter::paint(QRegion damage, ToplevelList toplevels)
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{
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QElapsedTimer renderTimer;
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renderTimer.start();
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createStackingOrder(toplevels);
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int mask = 0;
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m_backend->prepareRenderingFrame();
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m_painter->begin(m_backend->buffer());
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if (m_backend->needsFullRepaint()) {
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mask |= Scene::PAINT_SCREEN_BACKGROUND_FIRST;
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damage = QRegion(0, 0, displayWidth(), displayHeight());
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}
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QRegion updateRegion, validRegion;
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paintScreen(&mask, damage, QRegion(), &updateRegion, &validRegion);
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m_backend->showOverlay();
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m_painter->end();
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m_backend->present(mask, updateRegion);
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// do cleanup
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clearStackingOrder();
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|
||||
return renderTimer.nsecsElapsed();
|
||||
}
|
||||
|
||||
void SceneQPainter::paintBackground(QRegion region)
|
||||
{
|
||||
m_painter->setBrush(Qt::black);
|
||||
m_painter->drawRects(region.rects());
|
||||
}
|
||||
|
||||
Scene::Window *SceneQPainter::createWindow(Toplevel *toplevel)
|
||||
{
|
||||
return new SceneQPainter::Window(this, toplevel);
|
||||
}
|
||||
|
||||
Scene::EffectFrame *SceneQPainter::createEffectFrame(EffectFrameImpl *frame)
|
||||
{
|
||||
return new QPainterEffectFrame(frame, this);
|
||||
}
|
||||
|
||||
Shadow *SceneQPainter::createShadow(Toplevel *toplevel)
|
||||
{
|
||||
return new SceneQPainterShadow(toplevel);
|
||||
}
|
||||
|
||||
//****************************************
|
||||
// SceneQPainter::Window
|
||||
//****************************************
|
||||
SceneQPainter::Window::Window(SceneQPainter *scene, Toplevel *c)
|
||||
: Scene::Window(c)
|
||||
, m_scene(scene)
|
||||
{
|
||||
}
|
||||
|
||||
SceneQPainter::Window::~Window()
|
||||
{
|
||||
discardShape();
|
||||
}
|
||||
|
||||
void SceneQPainter::Window::performPaint(int mask, QRegion region, WindowPaintData data)
|
||||
{
|
||||
if (!(mask & (PAINT_WINDOW_TRANSFORMED | PAINT_SCREEN_TRANSFORMED)))
|
||||
region &= toplevel->visibleRect();
|
||||
|
||||
if (region.isEmpty())
|
||||
return;
|
||||
QPainterWindowPixmap *pixmap = windowPixmap<QPainterWindowPixmap>();
|
||||
if (!pixmap || !pixmap->isValid()) {
|
||||
return;
|
||||
}
|
||||
if (!toplevel->damage().isEmpty()) {
|
||||
pixmap->update(toplevel->damage());
|
||||
toplevel->resetDamage();
|
||||
}
|
||||
|
||||
QPainter *scenePainter = m_scene->painter();
|
||||
QPainter *painter = scenePainter;
|
||||
painter->setClipRegion(region);
|
||||
painter->setClipping(true);
|
||||
|
||||
painter->save();
|
||||
painter->translate(x(), y());
|
||||
if (mask & PAINT_WINDOW_TRANSFORMED) {
|
||||
painter->translate(data.xTranslation(), data.yTranslation());
|
||||
painter->scale(data.xScale(), data.yScale());
|
||||
}
|
||||
|
||||
const bool opaque = qFuzzyCompare(1.0, data.opacity());
|
||||
QImage tempImage;
|
||||
QPainter tempPainter;
|
||||
if (!opaque) {
|
||||
// need a temp render target which we later on blit to the screen
|
||||
tempImage = QImage(toplevel->visibleRect().size(), QImage::Format_ARGB32_Premultiplied);
|
||||
tempImage.fill(Qt::transparent);
|
||||
tempPainter.begin(&tempImage);
|
||||
tempPainter.save();
|
||||
tempPainter.translate(toplevel->geometry().topLeft() - toplevel->visibleRect().topLeft());
|
||||
painter = &tempPainter;
|
||||
}
|
||||
renderShadow(painter);
|
||||
renderWindowDecorations(painter);
|
||||
|
||||
// render content
|
||||
const QRect src = QRect(toplevel->clientPos(), toplevel->clientSize());
|
||||
painter->drawImage(toplevel->clientPos(), pixmap->image(), src);
|
||||
|
||||
if (!opaque) {
|
||||
tempPainter.restore();
|
||||
tempPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
|
||||
QColor translucent(Qt::transparent);
|
||||
translucent.setAlphaF(data.opacity());
|
||||
tempPainter.fillRect(QRect(QPoint(0, 0), toplevel->visibleRect().size()), translucent);
|
||||
tempPainter.end();
|
||||
painter = scenePainter;
|
||||
painter->drawImage(toplevel->visibleRect().topLeft() - toplevel->geometry().topLeft(), tempImage);
|
||||
}
|
||||
|
||||
painter->restore();
|
||||
|
||||
painter->setClipRegion(QRegion());
|
||||
painter->setClipping(false);
|
||||
}
|
||||
|
||||
void SceneQPainter::Window::renderShadow(QPainter* painter)
|
||||
{
|
||||
if (!toplevel->shadow()) {
|
||||
return;
|
||||
}
|
||||
SceneQPainterShadow *shadow = static_cast<SceneQPainterShadow *>(toplevel->shadow());
|
||||
const QPixmap &topLeft = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementTopLeft);
|
||||
const QPixmap &top = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementTop);
|
||||
const QPixmap &topRight = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementTopRight);
|
||||
const QPixmap &bottomLeft = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementBottomLeft);
|
||||
const QPixmap &bottom = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementBottom);
|
||||
const QPixmap &bottomRight = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementBottomRight);
|
||||
const QPixmap &left = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementLeft);
|
||||
const QPixmap &right = shadow->shadowPixmap(SceneQPainterShadow::ShadowElementRight);
|
||||
|
||||
const int leftOffset = shadow->leftOffset();
|
||||
const int topOffset = shadow->topOffset();
|
||||
const int rightOffset = shadow->rightOffset();
|
||||
const int bottomOffset = shadow->bottomOffset();
|
||||
|
||||
// top left
|
||||
painter->drawPixmap(-leftOffset, -topOffset, topLeft);
|
||||
// top right
|
||||
painter->drawPixmap(toplevel->width() - topRight.width() + rightOffset, -topOffset, topRight);
|
||||
// bottom left
|
||||
painter->drawPixmap(-leftOffset, toplevel->height() - bottomLeft.height() + bottomOffset, bottomLeft);
|
||||
// bottom right
|
||||
painter->drawPixmap(toplevel->width() - bottomRight.width() + rightOffset,
|
||||
toplevel->height() - bottomRight.height() + bottomOffset,
|
||||
bottomRight);
|
||||
// top
|
||||
painter->drawPixmap(topLeft.width() - leftOffset, -topOffset,
|
||||
toplevel->width() - topLeft.width() - topRight.width() + leftOffset + rightOffset,
|
||||
top.height(),
|
||||
top);
|
||||
// left
|
||||
painter->drawPixmap(-leftOffset, topLeft.height() - topOffset, left.width(),
|
||||
toplevel->height() - topLeft.height() - bottomLeft.height() + topOffset + bottomOffset,
|
||||
left);
|
||||
// right
|
||||
painter->drawPixmap(toplevel->width() - right.width() + rightOffset,
|
||||
topRight.height() - topOffset,
|
||||
right.width(),
|
||||
toplevel->height() - topRight.height() - bottomRight.height() + topOffset + bottomOffset,
|
||||
right);
|
||||
// bottom
|
||||
painter->drawPixmap(bottomLeft.width() - leftOffset,
|
||||
toplevel->height() - bottom.height() + bottomOffset,
|
||||
toplevel->width() - bottomLeft.width() - bottomRight.width() + leftOffset + rightOffset,
|
||||
bottom.height(),
|
||||
bottom);
|
||||
}
|
||||
|
||||
void SceneQPainter::Window::renderWindowDecorations(QPainter *painter)
|
||||
{
|
||||
// TODO: custom decoration opacity
|
||||
Client *client = dynamic_cast<Client*>(toplevel);
|
||||
Deleted *deleted = dynamic_cast<Deleted*>(toplevel);
|
||||
if (!client && !deleted) {
|
||||
return;
|
||||
}
|
||||
|
||||
bool noBorder = true;
|
||||
PaintRedirector *redirector = NULL;
|
||||
QRect dtr, dlr, drr, dbr;
|
||||
if (client && !client->noBorder()) {
|
||||
redirector = client->decorationPaintRedirector();
|
||||
client->layoutDecorationRects(dlr, dtr, drr, dbr, Client::WindowRelative);
|
||||
noBorder = false;
|
||||
} else if (deleted && !deleted->noBorder()) {
|
||||
noBorder = false;
|
||||
redirector = deleted->decorationPaintRedirector();
|
||||
deleted->layoutDecorationRects(dlr, dtr, drr, dbr);
|
||||
}
|
||||
if (noBorder || !redirector) {
|
||||
return;
|
||||
}
|
||||
|
||||
redirector->ensurePixmapsPainted();
|
||||
const QImage *left = redirector->leftDecoPixmap<const QImage *>();
|
||||
const QImage *top = redirector->topDecoPixmap<const QImage *>();
|
||||
const QImage *right = redirector->rightDecoPixmap<const QImage *>();
|
||||
const QImage *bottom = redirector->bottomDecoPixmap<const QImage *>();
|
||||
|
||||
painter->drawImage(dtr, *top);
|
||||
painter->drawImage(dlr, *left);
|
||||
painter->drawImage(drr, *right);
|
||||
painter->drawImage(dbr, *bottom);
|
||||
|
||||
redirector->markAsRepainted();
|
||||
}
|
||||
|
||||
WindowPixmap *SceneQPainter::Window::createWindowPixmap()
|
||||
{
|
||||
return new QPainterWindowPixmap(this);
|
||||
}
|
||||
|
||||
//****************************************
|
||||
// QPainterWindowPixmap
|
||||
//****************************************
|
||||
QPainterWindowPixmap::QPainterWindowPixmap(Scene::Window *window)
|
||||
: WindowPixmap(window)
|
||||
, m_shm(new Xcb::Shm)
|
||||
{
|
||||
}
|
||||
|
||||
QPainterWindowPixmap::~QPainterWindowPixmap()
|
||||
{
|
||||
}
|
||||
|
||||
void QPainterWindowPixmap::create()
|
||||
{
|
||||
if (isValid() || !m_shm->isValid()) {
|
||||
return;
|
||||
}
|
||||
KWin::WindowPixmap::create();
|
||||
if (!isValid()) {
|
||||
return;
|
||||
}
|
||||
m_image = QImage((uchar*)m_shm->buffer(), size().width(), size().height(), QImage::Format_ARGB32_Premultiplied);
|
||||
}
|
||||
|
||||
bool QPainterWindowPixmap::update(const QRegion &damage)
|
||||
{
|
||||
Q_UNUSED(damage)
|
||||
if (!m_shm->isValid()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// TODO: optimize by only updating the damaged areas
|
||||
xcb_shm_get_image_cookie_t cookie = xcb_shm_get_image_unchecked(connection(), pixmap(),
|
||||
0, 0, size().width(), size().height(),
|
||||
~0, XCB_IMAGE_FORMAT_Z_PIXMAP, m_shm->segment(), 0);
|
||||
|
||||
ScopedCPointer<xcb_shm_get_image_reply_t> image(xcb_shm_get_image_reply(connection(), cookie, NULL));
|
||||
if (image.isNull()) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
QPainterEffectFrame::QPainterEffectFrame(EffectFrameImpl *frame, SceneQPainter *scene)
|
||||
: Scene::EffectFrame(frame)
|
||||
, m_scene(scene)
|
||||
{
|
||||
}
|
||||
|
||||
QPainterEffectFrame::~QPainterEffectFrame()
|
||||
{
|
||||
}
|
||||
|
||||
void QPainterEffectFrame::render(QRegion region, double opacity, double frameOpacity)
|
||||
{
|
||||
Q_UNUSED(region)
|
||||
Q_UNUSED(opacity)
|
||||
// TODO: adjust opacity
|
||||
if (m_effectFrame->geometry().isEmpty()) {
|
||||
return; // Nothing to display
|
||||
}
|
||||
QPainter *painter = m_scene->painter();
|
||||
|
||||
|
||||
// Render the actual frame
|
||||
if (m_effectFrame->style() == EffectFrameUnstyled) {
|
||||
painter->save();
|
||||
painter->setPen(Qt::NoPen);
|
||||
QColor color(Qt::black);
|
||||
color.setAlphaF(frameOpacity);
|
||||
painter->setBrush(color);
|
||||
painter->setRenderHint(QPainter::Antialiasing);
|
||||
painter->drawRoundedRect(m_effectFrame->geometry().adjusted(-5, -5, 5, 5), 5.0, 5.0);
|
||||
painter->restore();
|
||||
} else if (m_effectFrame->style() == EffectFrameStyled) {
|
||||
qreal left, top, right, bottom;
|
||||
m_effectFrame->frame().getMargins(left, top, right, bottom); // m_geometry is the inner geometry
|
||||
QRect geom = m_effectFrame->geometry().adjusted(-left, -top, right, bottom);
|
||||
painter->drawPixmap(geom, m_effectFrame->frame().framePixmap());
|
||||
}
|
||||
if (!m_effectFrame->selection().isNull()) {
|
||||
painter->drawPixmap(m_effectFrame->selection(), m_effectFrame->selectionFrame().framePixmap());
|
||||
}
|
||||
|
||||
// Render icon
|
||||
if (!m_effectFrame->icon().isNull() && !m_effectFrame->iconSize().isEmpty()) {
|
||||
const QPoint topLeft(m_effectFrame->geometry().x(),
|
||||
m_effectFrame->geometry().center().y() - m_effectFrame->iconSize().height() / 2);
|
||||
|
||||
const QRect geom = QRect(topLeft, m_effectFrame->iconSize());
|
||||
painter->drawPixmap(geom, m_effectFrame->icon().pixmap(m_effectFrame->iconSize()));
|
||||
}
|
||||
|
||||
// Render text
|
||||
if (!m_effectFrame->text().isEmpty()) {
|
||||
// Determine position on texture to paint text
|
||||
QRect rect(QPoint(0, 0), m_effectFrame->geometry().size());
|
||||
if (!m_effectFrame->icon().isNull() && !m_effectFrame->iconSize().isEmpty()) {
|
||||
rect.setLeft(m_effectFrame->iconSize().width());
|
||||
}
|
||||
|
||||
// If static size elide text as required
|
||||
QString text = m_effectFrame->text();
|
||||
if (m_effectFrame->isStatic()) {
|
||||
QFontMetrics metrics(m_effectFrame->text());
|
||||
text = metrics.elidedText(text, Qt::ElideRight, rect.width());
|
||||
}
|
||||
|
||||
painter->save();
|
||||
painter->setFont(m_effectFrame->font());
|
||||
if (m_effectFrame->style() == EffectFrameStyled) {
|
||||
painter->setPen(m_effectFrame->styledTextColor());
|
||||
} else {
|
||||
// TODO: What about no frame? Custom color setting required
|
||||
painter->setPen(Qt::white);
|
||||
}
|
||||
painter->drawText(rect.translated(m_effectFrame->geometry().topLeft()), m_effectFrame->alignment(), text);
|
||||
painter->restore();
|
||||
}
|
||||
}
|
||||
|
||||
//****************************************
|
||||
// QPainterShadow
|
||||
//****************************************
|
||||
SceneQPainterShadow::SceneQPainterShadow(Toplevel* toplevel)
|
||||
: Shadow(toplevel)
|
||||
{
|
||||
}
|
||||
|
||||
SceneQPainterShadow::~SceneQPainterShadow()
|
||||
{
|
||||
}
|
||||
|
||||
bool SceneQPainterShadow::prepareBackend()
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
} // KWin
|
||||
263
scene_qpainter.h
Normal file
263
scene_qpainter.h
Normal file
|
|
@ -0,0 +1,263 @@
|
|||
/********************************************************************
|
||||
KWin - the KDE window manager
|
||||
This file is part of the KDE project.
|
||||
|
||||
Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*********************************************************************/
|
||||
#ifndef KWIN_SCENE_QPAINTER_H
|
||||
#define KWIN_SCENE_QPAINTER_H
|
||||
|
||||
#include "scene.h"
|
||||
#include "shadow.h"
|
||||
#include <config-workspace.h>
|
||||
|
||||
namespace KWin {
|
||||
|
||||
namespace Xcb {
|
||||
class Shm;
|
||||
}
|
||||
|
||||
class QPainterBackend
|
||||
{
|
||||
public:
|
||||
virtual ~QPainterBackend();
|
||||
virtual void present(int mask, const QRegion &damage) = 0;
|
||||
|
||||
/**
|
||||
* @brief Returns the OverlayWindow used by the backend.
|
||||
*
|
||||
* A backend does not have to use an OverlayWindow, this is mostly for the X world.
|
||||
* In case the backend does not use an OverlayWindow it is allowed to return @c null.
|
||||
* It's the task of the caller to check whether it is @c null.
|
||||
*
|
||||
* @return :OverlayWindow*
|
||||
**/
|
||||
virtual OverlayWindow *overlayWindow();
|
||||
virtual bool usesOverlayWindow() const = 0;
|
||||
virtual void prepareRenderingFrame() = 0;
|
||||
/**
|
||||
* @brief Shows the Overlay Window
|
||||
*
|
||||
* Default implementation does nothing.
|
||||
*/
|
||||
virtual void showOverlay();
|
||||
/**
|
||||
* @brief React on screen geometry changes.
|
||||
*
|
||||
* Default implementation does nothing. Override if specific functionality is required.
|
||||
*
|
||||
* @param size The new screen size
|
||||
*/
|
||||
virtual void screenGeometryChanged(const QSize &size);
|
||||
/**
|
||||
* @brief Backend specific code to determine whether the last frame got rendered.
|
||||
*
|
||||
* Default implementation always returns @c true. That is it's always assumed that the last
|
||||
* frame got rendered. If a backend needs more control it needs to implement this method.
|
||||
*/
|
||||
virtual bool isLastFrameRendered() const;
|
||||
/**
|
||||
* @brief Whether the creation of the Backend failed.
|
||||
*
|
||||
* The SceneQPainter should test whether the Backend got constructed correctly. If this method
|
||||
* returns @c true, the SceneQPainter should not try to start the rendering.
|
||||
*
|
||||
* @return bool @c true if the creation of the Backend failed, @c false otherwise.
|
||||
**/
|
||||
bool isFailed() const {
|
||||
return m_failed;
|
||||
}
|
||||
|
||||
virtual QImage *buffer() = 0;
|
||||
virtual bool needsFullRepaint() const = 0;
|
||||
|
||||
protected:
|
||||
QPainterBackend();
|
||||
/**
|
||||
* @brief Sets the backend initialization to failed.
|
||||
*
|
||||
* This method should be called by the concrete subclass in case the initialization failed.
|
||||
* The given @p reason is logged as a warning.
|
||||
*
|
||||
* @param reason The reason why the initialization failed.
|
||||
**/
|
||||
void setFailed(const QString &reason);
|
||||
|
||||
private:
|
||||
bool m_failed;
|
||||
};
|
||||
|
||||
#ifdef WAYLAND_FOUND
|
||||
namespace Wayland {
|
||||
class Buffer;
|
||||
}
|
||||
class WaylandQPainterBackend : public QObject, public QPainterBackend
|
||||
{
|
||||
Q_OBJECT
|
||||
public:
|
||||
WaylandQPainterBackend();
|
||||
virtual ~WaylandQPainterBackend();
|
||||
|
||||
virtual void present(int mask, const QRegion& damage) override;
|
||||
virtual bool usesOverlayWindow() const override;
|
||||
virtual bool isLastFrameRendered() const override;
|
||||
virtual void screenGeometryChanged(const QSize &size) override;
|
||||
virtual QImage *buffer() override;
|
||||
virtual void prepareRenderingFrame() override;
|
||||
virtual bool needsFullRepaint() const override;
|
||||
void lastFrameRendered();
|
||||
private Q_SLOTS:
|
||||
void remapBuffer();
|
||||
private:
|
||||
bool m_lastFrameRendered;
|
||||
bool m_needsFullRepaint;
|
||||
QImage m_backBuffer;
|
||||
Wayland::Buffer *m_buffer;
|
||||
};
|
||||
#endif
|
||||
|
||||
class SceneQPainter : public Scene
|
||||
{
|
||||
Q_OBJECT
|
||||
|
||||
public:
|
||||
virtual ~SceneQPainter();
|
||||
virtual bool isLastFrameRendered() const override;
|
||||
virtual bool usesOverlayWindow() const override;
|
||||
virtual OverlayWindow* overlayWindow() override;
|
||||
virtual qint64 paint(QRegion damage, ToplevelList windows) override;
|
||||
virtual void paintGenericScreen(int mask, ScreenPaintData data) override;
|
||||
virtual CompositingType compositingType() const override;
|
||||
virtual bool initFailed() const override;
|
||||
virtual EffectFrame *createEffectFrame(EffectFrameImpl *frame) override;
|
||||
virtual Shadow *createShadow(Toplevel *toplevel) override;
|
||||
|
||||
QPainter *painter();
|
||||
|
||||
static SceneQPainter *createScene();
|
||||
|
||||
protected:
|
||||
virtual void paintBackground(QRegion region) override;
|
||||
virtual Scene::Window *createWindow(Toplevel *toplevel) override;
|
||||
|
||||
private:
|
||||
explicit SceneQPainter(QPainterBackend *backend);
|
||||
QScopedPointer<QPainterBackend> m_backend;
|
||||
QScopedPointer<QPainter> m_painter;
|
||||
class Window;
|
||||
};
|
||||
|
||||
class SceneQPainter::Window : public Scene::Window
|
||||
{
|
||||
public:
|
||||
Window(SceneQPainter *scene, Toplevel *c);
|
||||
virtual ~Window();
|
||||
virtual void performPaint(int mask, QRegion region, WindowPaintData data) override;
|
||||
protected:
|
||||
virtual WindowPixmap *createWindowPixmap() override;
|
||||
private:
|
||||
void renderShadow(QPainter *painter);
|
||||
void renderWindowDecorations(QPainter *painter);
|
||||
SceneQPainter *m_scene;
|
||||
};
|
||||
|
||||
class QPainterWindowPixmap : public WindowPixmap
|
||||
{
|
||||
public:
|
||||
explicit QPainterWindowPixmap(Scene::Window *window);
|
||||
virtual ~QPainterWindowPixmap();
|
||||
virtual void create() override;
|
||||
|
||||
bool update(const QRegion &damage);
|
||||
const QImage &image();
|
||||
private:
|
||||
QScopedPointer<Xcb::Shm> m_shm;
|
||||
QImage m_image;
|
||||
};
|
||||
|
||||
class QPainterEffectFrame : public Scene::EffectFrame
|
||||
{
|
||||
public:
|
||||
QPainterEffectFrame(EffectFrameImpl *frame, SceneQPainter *scene);
|
||||
virtual ~QPainterEffectFrame();
|
||||
virtual void crossFadeIcon() override {}
|
||||
virtual void crossFadeText() override {}
|
||||
virtual void free() override {}
|
||||
virtual void freeIconFrame() override {}
|
||||
virtual void freeTextFrame() override {}
|
||||
virtual void freeSelection() override {}
|
||||
virtual void render(QRegion region, double opacity, double frameOpacity) override;
|
||||
private:
|
||||
SceneQPainter *m_scene;
|
||||
};
|
||||
|
||||
class SceneQPainterShadow : public Shadow
|
||||
{
|
||||
public:
|
||||
SceneQPainterShadow(Toplevel* toplevel);
|
||||
virtual ~SceneQPainterShadow();
|
||||
using Shadow::ShadowElements;
|
||||
using Shadow::ShadowElementTop;
|
||||
using Shadow::ShadowElementTopRight;
|
||||
using Shadow::ShadowElementRight;
|
||||
using Shadow::ShadowElementBottomRight;
|
||||
using Shadow::ShadowElementBottom;
|
||||
using Shadow::ShadowElementBottomLeft;
|
||||
using Shadow::ShadowElementLeft;
|
||||
using Shadow::ShadowElementTopLeft;
|
||||
using Shadow::ShadowElementsCount;
|
||||
using Shadow::shadowPixmap;
|
||||
using Shadow::topOffset;
|
||||
using Shadow::leftOffset;
|
||||
using Shadow::rightOffset;
|
||||
using Shadow::bottomOffset;
|
||||
protected:
|
||||
virtual bool prepareBackend() override;
|
||||
};
|
||||
|
||||
inline
|
||||
bool SceneQPainter::usesOverlayWindow() const
|
||||
{
|
||||
return m_backend->usesOverlayWindow();
|
||||
}
|
||||
|
||||
inline
|
||||
OverlayWindow* SceneQPainter::overlayWindow()
|
||||
{
|
||||
return m_backend->overlayWindow();
|
||||
}
|
||||
|
||||
inline
|
||||
bool SceneQPainter::isLastFrameRendered() const
|
||||
{
|
||||
return m_backend->isLastFrameRendered();
|
||||
}
|
||||
|
||||
inline
|
||||
QPainter* SceneQPainter::painter()
|
||||
{
|
||||
return m_painter.data();
|
||||
}
|
||||
|
||||
inline
|
||||
const QImage &QPainterWindowPixmap::image()
|
||||
{
|
||||
return m_image;
|
||||
}
|
||||
|
||||
} // KWin
|
||||
|
||||
#endif // KWIN_SCENEQPAINTER_H
|
||||
|
|
@ -1560,6 +1560,9 @@ QString Workspace::supportInformation() const
|
|||
case XRenderCompositing:
|
||||
support.append(QStringLiteral("Compositing Type: XRender\n"));
|
||||
break;
|
||||
case QPainterCompositing:
|
||||
support.append("Compositing Type: QPainter\n");
|
||||
break;
|
||||
case NoCompositing:
|
||||
default:
|
||||
support.append(QStringLiteral("Something is really broken, neither OpenGL nor XRender is used"));
|
||||
|
|
|
|||
Loading…
Reference in a new issue