2013-06-21 12:03:31 +04:00
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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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#ifndef KWIN_SCENE_QPAINTER_H
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#define KWIN_SCENE_QPAINTER_H
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#include "scene.h"
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#include "shadow.h"
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2014-07-22 15:11:19 +04:00
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#include "decorations/decorationrenderer.h"
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2013-06-21 12:03:31 +04:00
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namespace KWin {
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2015-05-05 18:58:09 +03:00
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class KWIN_EXPORT QPainterBackend
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2013-06-21 12:03:31 +04:00
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{
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public:
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virtual ~QPainterBackend();
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virtual void present(int mask, const QRegion &damage) = 0;
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/**
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* @brief Returns the OverlayWindow used by the backend.
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*
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* A backend does not have to use an OverlayWindow, this is mostly for the X world.
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* In case the backend does not use an OverlayWindow it is allowed to return @c null.
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* It's the task of the caller to check whether it is @c null.
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*
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* @return :OverlayWindow*
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**/
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virtual OverlayWindow *overlayWindow();
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virtual bool usesOverlayWindow() const = 0;
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virtual void prepareRenderingFrame() = 0;
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/**
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* @brief Shows the Overlay Window
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*
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* Default implementation does nothing.
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*/
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virtual void showOverlay();
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/**
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* @brief React on screen geometry changes.
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*
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* Default implementation does nothing. Override if specific functionality is required.
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*
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* @param size The new screen size
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*/
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virtual void screenGeometryChanged(const QSize &size);
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/**
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* @brief Whether the creation of the Backend failed.
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*
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* The SceneQPainter should test whether the Backend got constructed correctly. If this method
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* returns @c true, the SceneQPainter should not try to start the rendering.
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*
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* @return bool @c true if the creation of the Backend failed, @c false otherwise.
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**/
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bool isFailed() const {
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return m_failed;
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}
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virtual QImage *buffer() = 0;
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2015-04-17 12:17:06 +03:00
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/**
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* Overload for the case that there is a different buffer per screen.
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* Default implementation just calls buffer.
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* @param screenId The id of the screen as used in Screens
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* @todo Get a better identifier for screen then a counter variable
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**/
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virtual QImage *bufferForScreen(int screenId);
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virtual bool needsFullRepaint() const = 0;
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2015-04-17 12:17:06 +03:00
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/**
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* Whether the rendering needs to be split per screen.
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* Default implementation returns @c false.
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**/
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virtual bool perScreenRendering() const;
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2013-06-21 12:03:31 +04:00
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protected:
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QPainterBackend();
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/**
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* @brief Sets the backend initialization to failed.
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*
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* This method should be called by the concrete subclass in case the initialization failed.
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* The given @p reason is logged as a warning.
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*
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* @param reason The reason why the initialization failed.
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**/
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void setFailed(const QString &reason);
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private:
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bool m_failed;
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};
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2016-06-29 20:22:41 +03:00
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class KWIN_EXPORT SceneQPainter : public Scene
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{
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Q_OBJECT
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public:
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virtual ~SceneQPainter();
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virtual bool usesOverlayWindow() const override;
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virtual OverlayWindow* overlayWindow() override;
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virtual qint64 paint(QRegion damage, ToplevelList windows) override;
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virtual void paintGenericScreen(int mask, ScreenPaintData data) override;
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virtual CompositingType compositingType() const override;
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virtual bool initFailed() const override;
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virtual EffectFrame *createEffectFrame(EffectFrameImpl *frame) override;
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virtual Shadow *createShadow(Toplevel *toplevel) override;
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2014-07-22 15:11:19 +04:00
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Decoration::Renderer *createDecorationRenderer(Decoration::DecoratedClientImpl *impl) override;
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2015-03-19 10:29:34 +03:00
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void screenGeometryChanged(const QSize &size) override;
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2013-06-21 12:03:31 +04:00
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2016-08-10 10:24:53 +03:00
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bool animationsSupported() const override {
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return false;
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}
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2013-06-21 12:03:31 +04:00
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QPainter *painter();
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2016-06-29 20:22:41 +03:00
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QPainterBackend *backend() const {
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return m_backend.data();
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}
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2015-02-23 16:41:45 +03:00
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static SceneQPainter *createScene(QObject *parent);
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2013-06-21 12:03:31 +04:00
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protected:
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virtual void paintBackground(QRegion region) override;
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virtual Scene::Window *createWindow(Toplevel *toplevel) override;
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private:
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explicit SceneQPainter(QPainterBackend *backend, QObject *parent = nullptr);
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2016-06-28 11:37:02 +03:00
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void paintCursor();
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QScopedPointer<QPainterBackend> m_backend;
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QScopedPointer<QPainter> m_painter;
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class Window;
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};
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class SceneQPainter::Window : public Scene::Window
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{
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public:
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Window(SceneQPainter *scene, Toplevel *c);
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virtual ~Window();
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virtual void performPaint(int mask, QRegion region, WindowPaintData data) override;
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protected:
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virtual WindowPixmap *createWindowPixmap() override;
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private:
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void renderShadow(QPainter *painter);
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void renderWindowDecorations(QPainter *painter);
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SceneQPainter *m_scene;
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};
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class QPainterWindowPixmap : public WindowPixmap
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{
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public:
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explicit QPainterWindowPixmap(Scene::Window *window);
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virtual ~QPainterWindowPixmap();
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virtual void create() override;
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bool isValid() const override;
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2016-03-31 11:22:14 +03:00
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void updateBuffer() override;
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const QImage &image();
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2016-03-21 18:42:30 +03:00
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protected:
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WindowPixmap *createChild(const QPointer<KWayland::Server::SubSurfaceInterface> &subSurface) override;
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private:
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explicit QPainterWindowPixmap(const QPointer<KWayland::Server::SubSurfaceInterface> &subSurface, WindowPixmap *parent);
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QImage m_image;
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};
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class QPainterEffectFrame : public Scene::EffectFrame
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{
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public:
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QPainterEffectFrame(EffectFrameImpl *frame, SceneQPainter *scene);
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virtual ~QPainterEffectFrame();
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virtual void crossFadeIcon() override {}
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virtual void crossFadeText() override {}
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virtual void free() override {}
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virtual void freeIconFrame() override {}
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virtual void freeTextFrame() override {}
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virtual void freeSelection() override {}
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virtual void render(QRegion region, double opacity, double frameOpacity) override;
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private:
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SceneQPainter *m_scene;
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};
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class SceneQPainterShadow : public Shadow
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{
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public:
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SceneQPainterShadow(Toplevel* toplevel);
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virtual ~SceneQPainterShadow();
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using Shadow::ShadowElements;
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using Shadow::ShadowElementTop;
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using Shadow::ShadowElementTopRight;
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using Shadow::ShadowElementRight;
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using Shadow::ShadowElementBottomRight;
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using Shadow::ShadowElementBottom;
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using Shadow::ShadowElementBottomLeft;
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using Shadow::ShadowElementLeft;
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using Shadow::ShadowElementTopLeft;
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using Shadow::ShadowElementsCount;
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using Shadow::shadowPixmap;
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using Shadow::topOffset;
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using Shadow::leftOffset;
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using Shadow::rightOffset;
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using Shadow::bottomOffset;
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protected:
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virtual bool prepareBackend() override;
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};
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2014-07-22 15:11:19 +04:00
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class SceneQPainterDecorationRenderer : public Decoration::Renderer
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{
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Q_OBJECT
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public:
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enum class DecorationPart : int {
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Left,
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Top,
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Right,
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Bottom,
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Count
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};
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explicit SceneQPainterDecorationRenderer(Decoration::DecoratedClientImpl *client);
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virtual ~SceneQPainterDecorationRenderer();
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void render() override;
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2014-07-23 11:20:28 +04:00
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void reparent(Deleted *deleted) override;
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QImage image(DecorationPart part) const;
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private:
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void resizeImages();
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QImage m_images[int(DecorationPart::Count)];
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};
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2013-06-21 12:03:31 +04:00
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inline
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bool SceneQPainter::usesOverlayWindow() const
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{
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return m_backend->usesOverlayWindow();
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}
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inline
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OverlayWindow* SceneQPainter::overlayWindow()
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{
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return m_backend->overlayWindow();
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}
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inline
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QPainter* SceneQPainter::painter()
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{
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return m_painter.data();
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}
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inline
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const QImage &QPainterWindowPixmap::image()
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{
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return m_image;
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}
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} // KWin
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#endif // KWIN_SCENEQPAINTER_H
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