fbcompose - A compositing addon for fluxbox window manager.

 fbcompose(1) is an optional compositing addon for fluxbox window manager. It
 augments fluxbox with a number of graphical features. Most notably, fbcompose
 allows fluxbox to properly display applications that require compositing
 (docky, for example), adds support for true window transparency (as opposed to
 fluxbox's pseudo transparency) and provides a plugin framework to extend the
 compositor's functionality.

 As this is still a beta version of the compositor, the bugs are likely.

1 files changed, 164 insertions, 0 deletions

diff --git a/util/fbcompose/XRenderScreen.hh b/util/fbcompose/XRenderScreen.hh
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+/** XRenderScreen.hh file for the fluxbox compositor. */
+
+// Copyright (c) 2011 Gediminas Liktaras (gliktaras at gmail dot com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+#ifndef FBCOMPOSITOR_XRENDERSCREEN_HH
+#define FBCOMPOSITOR_XRENDERSCREEN_HH
+
+
+#include "BaseScreen.hh"
+
+#include "XRenderPlugin.hh"
+#include "XRenderResources.hh"
+
+#include <X11/extensions/Xfixes.h>
+#include <X11/extensions/Xrender.h>
+#include <X11/Xlib.h>
+
+
+namespace FbCompositor {
+
+    class BaseScreen;
+    class CompositorConfig;
+    class XRenderScreen;
+    class XRenderWindow;
+
+
+    /**
+     * Manages the screen in XRender rendering mode.
+     */
+    class XRenderScreen : public BaseScreen {
+    public:
+        //--- CONSTRUCTORS AND DESTRUCTORS -------------------------------------
+
+        /** Constructor. */
+        XRenderScreen(int screen_number, const CompositorConfig &config);
+
+        /** Destructor. */
+        ~XRenderScreen();
+
+
+        //--- ACCESSORS --------------------------------------------------------
+
+        /** \returns the preferred filter for XRender Pictures. */
+        const char *pictFilter() const;
+
+
+        //--- SCREEN MANIPULATION ----------------------------------------------
+
+        /** Notifies the screen of a background change. */
+        void setRootPixmapChanged();
+
+        /** Notifies the screen of a root window change. */
+        void setRootWindowSizeChanged();
+
+
+        //--- SCREEN RENDERING -------------------------------------------------
+
+        /** Renders the screen's contents. */
+        void renderScreen();
+
+
+    protected:
+        //--- SPECIALIZED WINDOW MANIPULATION FUNCTIONS ------------------------
+
+        /** Creates a window object from its XID. */
+        BaseCompWindow *createWindowObject(Window window);
+
+
+    private:
+        //--- INITIALIZATION FUNCTIONS -----------------------------------------
+
+        /** Initializes the rendering surface. */
+        void initRenderingSurface();
+
+
+        //--- SCREEN MANIPULATION ----------------------------------------------
+
+        /** Update the background picture. */
+        void updateBackgroundPicture();
+
+
+        //--- RENDERING FUNCTIONS ----------------------------------------------
+
+        /** Clips the backbuffer picture to damaged area. */
+        void clipBackBufferToDamage();
+
+        /** Perform a rendering job on the back buffer picture. */
+        void executeRenderingJob(const XRenderRenderingJob &job);
+
+        /** Render the desktop wallpaper. */
+        void renderBackground();
+
+        /** Perform extra rendering jobs from plugins. */
+        void renderExtraJobs();
+
+        /** Render the reconfigure rectangle. */
+        void renderReconfigureRect();
+
+        /** Render a particular window onto the screen. */
+        void renderWindow(XRenderWindow &window);
+
+        /** Swap back and front buffers. */
+        void swapBuffers();
+
+
+        //--- MAIN RENDERING-RELATED VARIABLES ---------------------------------
+
+        /** The rendering window. */
+        Window m_rendering_window;
+
+        /** The picture of the back buffer. */
+        XRenderPicturePtr m_back_buffer_picture;
+
+        /** The picture of the rendering window. */
+        XRenderPicturePtr m_rendering_picture;
+
+
+        /** A container for rectangle, damaged by plugins. */
+        std::vector<XRectangle> m_plugin_damage_rects;
+
+        /** Screen region, damaged by plugins. */
+        XserverRegion m_plugin_damage;
+
+
+        /** The picture of the root window. */
+        XRenderPicturePtr m_root_picture;
+
+        /** Whether the root window has changed since the last update. */
+        bool m_root_changed;
+
+
+        /** The picture filter to use. */
+        const char *m_pict_filter;
+    };
+
+
+    //--- INLINE FUNCTIONS -------------------------------------------------
+
+    // Returns the preferred filter for XRender Pictures.
+    inline const char *XRenderScreen::pictFilter() const {
+        return m_pict_filter;
+    }
+}
+
+#endif  // FBCOMPOSITOR_XRENDERSCREEN_HH