267 lines
7.4 KiB
C++
267 lines
7.4 KiB
C++
/*****************************************************************
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This file is part of the KDE project.
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Copyright (C) 2009 Lubos Lunak <l.lunak@kde.org>
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Copyright (C) 2012 Martin Gräßlin <mgraesslin@kde.org>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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******************************************************************/
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#ifndef PAINTREDIRECTOR_H
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#define PAINTREDIRECTOR_H
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#include <qregion.h>
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#include <qtimer.h>
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#include <qwidget.h>
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#include <qbasictimer.h>
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// xcb
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#include <xcb/render.h>
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namespace KWin
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{
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// forward declarations
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class Client;
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class Deleted;
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class XRenderPicture;
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class GLTexture;
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// This class redirects all painting of a given widget (including its children)
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// into a paint device (QPixmap).
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class PaintRedirector
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: public QObject
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{
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Q_OBJECT
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public:
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enum DecorationPixmap {
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TopPixmap,
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RightPixmap,
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BottomPixmap,
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LeftPixmap,
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PixmapCount
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};
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virtual ~PaintRedirector();
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virtual bool eventFilter(QObject* o, QEvent* e);
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QRegion pendingRegion() const;
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QRegion scheduledRepaintRegion();
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void markAsRepainted() {
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m_requiresRepaint = false;
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}
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bool requiresRepaint() const {
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return m_requiresRepaint;
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}
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void resizePixmaps();
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template <typename T>
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T topDecoPixmap() const;
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template <typename T>
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T leftDecoPixmap() const;
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template <typename T>
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T bottomDecoPixmap() const;
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template <typename T>
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T rightDecoPixmap() const;
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/**
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* Used by Deleted::copyToDeleted() to move the PaintRedirector to the Deleted.
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* The actual redirecting ends as the decoration gets destroyed after the Deleted
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* is created.
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**/
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void reparent(Deleted *d);
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static PaintRedirector *create(Client *c, QWidget* widget);
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public slots:
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void ensurePixmapsPainted();
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protected:
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PaintRedirector(Client *c, QWidget* widget);
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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 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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virtual void updatePixmaps(const QRect *rects, const QRegion ®ion);
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virtual void paint(DecorationPixmap border, const QRect& r, const QRect &b, const QRegion ®);
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virtual QPaintDevice *scratch() = 0;
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virtual QPaintDevice *recreateScratch(const QSize &size) = 0;
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virtual void fillScratch(Qt::GlobalColor color) = 0;
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virtual void discardScratch() = 0;
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private:
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void added(QWidget* widget);
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void removed(QWidget* widget);
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bool isToolTip(QWidget* widget) const;
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void timerEvent(QTimerEvent* event);
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void performPendingPaint();
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void repaintPixmap(DecorationPixmap border, const QRect& r, QRegion reg);
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QWidget* widget;
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QRegion pending;
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QRegion scheduled;
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bool recursionCheck;
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QBasicTimer cleanupTimer;
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Client *m_client;
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bool m_requiresRepaint;
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};
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class ImageBasedPaintRedirector : public PaintRedirector
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{
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Q_OBJECT
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public:
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virtual ~ImageBasedPaintRedirector();
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protected:
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ImageBasedPaintRedirector(Client *c, QWidget *widget);
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virtual QPaintDevice *recreateScratch(const QSize &size);
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virtual QPaintDevice *scratch();
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virtual void fillScratch(Qt::GlobalColor color);
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virtual void discardScratch();
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const QImage &scratchImage() const;
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private:
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QImage m_scratchImage;
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};
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class OpenGLPaintRedirector : public ImageBasedPaintRedirector
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{
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Q_OBJECT
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enum Texture { LeftRight = 0, TopBottom, TextureCount };
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public:
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OpenGLPaintRedirector(Client *c, QWidget *widget);
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virtual ~OpenGLPaintRedirector();
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GLTexture *leftRightTexture() const { return m_textures[LeftRight]; }
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GLTexture *topBottomTexture() const { return m_textures[TopBottom]; }
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protected:
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virtual void resizePixmaps(const QRect *rects);
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virtual void updatePixmaps(const QRect *rects, const QRegion ®ion);
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virtual void preparePaint(const QPixmap &pending);
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private:
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QImage m_tempImage;
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GLTexture *m_textures[2];
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};
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class NativeXRenderPaintRedirector : public PaintRedirector
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{
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Q_OBJECT
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public:
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NativeXRenderPaintRedirector(Client *c, QWidget *widget);
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virtual ~NativeXRenderPaintRedirector();
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protected:
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virtual xcb_render_picture_t picture(DecorationPixmap border) const;
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virtual void resize(DecorationPixmap border, const QSize &size);
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virtual void paint(DecorationPixmap border, const QRect &r, const QRect &b, const QRegion ®);
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virtual void fillScratch(Qt::GlobalColor color);
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virtual QPaintDevice *recreateScratch(const QSize &size);
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virtual QPaintDevice *scratch();
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virtual void discardScratch();
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private:
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QPixmap m_pixmaps[PixmapCount];
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QPixmap m_scratch;
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};
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class RasterXRenderPaintRedirector : public ImageBasedPaintRedirector
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{
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Q_OBJECT
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public:
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RasterXRenderPaintRedirector(Client *c, QWidget *widget);
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virtual ~RasterXRenderPaintRedirector();
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protected:
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virtual xcb_render_picture_t picture(DecorationPixmap border) const;
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virtual void resize(DecorationPixmap border, const QSize &size);
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virtual void paint(DecorationPixmap border, const QRect &r, const QRect &b, const QRegion ®);
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virtual void preparePaint(const QPixmap &pending);
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private:
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QSize m_sizes[PixmapCount];
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xcb_pixmap_t m_pixmaps[PixmapCount];
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xcb_gcontext_t m_gc;
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XRenderPicture* m_pictures[PixmapCount];
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QImage m_tempImage;
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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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{
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return texture(BottomPixmap);
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}
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template <>
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inline
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GLTexture *PaintRedirector::leftDecoPixmap() const
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{
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return texture(LeftPixmap);
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}
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template <>
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inline
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GLTexture *PaintRedirector::rightDecoPixmap() const
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{
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return texture(RightPixmap);
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}
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template <>
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inline
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GLTexture *PaintRedirector::topDecoPixmap() const
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{
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return texture(TopPixmap);
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}
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template <>
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inline
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xcb_render_picture_t PaintRedirector::bottomDecoPixmap() const
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{
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return picture(BottomPixmap);
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}
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template <>
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inline
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xcb_render_picture_t PaintRedirector::leftDecoPixmap() const
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{
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return picture(LeftPixmap);
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}
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template <>
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inline
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xcb_render_picture_t PaintRedirector::rightDecoPixmap() const
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{
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return picture(RightPixmap);
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}
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template <>
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inline
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xcb_render_picture_t PaintRedirector::topDecoPixmap() const
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{
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return picture(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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return m_scratchImage;
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}
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} // namespace
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#endif
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