moved from fluxbox to fbtk

1 files changed, 126 insertions, 0 deletions

diff --git a/src/FbTk/ImageControl.hh b/src/FbTk/ImageControl.hh
new file mode 100644
index 0000000..81d792c
--- /dev/null
+++ b/src/FbTk/ImageControl.hh
@@ -0,0 +1,126 @@
+// ImageControl.hh for FbTk - Fluxbox Toolkit
+// Copyright (c) 2001 - 2003 Henrik Kinnunen (fluxbox at users.sourceforge.net)
+//
+// from Image.hh for Blackbox - an X11 Window manager
+// Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
+//
+// 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.
+
+// $Id: ImageControl.hh,v 1.1 2003/01/09 21:09:49 fluxgen Exp $
+
+#ifndef  FBTK_IMAGECONTROL_HH
+#define  FBTK_IMAGECONTROL_HH
+
+#include "Texture.hh"
+#include "Timer.hh"
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <list>
+
+namespace FbTk {
+
+///     Holds screen info, color tables and caches textures
+class ImageControl : public TimeoutHandler {
+public:
+    ImageControl(int screen_num, bool dither = false, int colors_per_channel = 4,
+                  unsigned long cache_timeout = 300000l, unsigned long cache_max = 200l);
+    virtual ~ImageControl();
+
+    inline bool doDither() const { return m_dither; }
+    inline int bitsPerPixel() const { return bits_per_pixel; }
+    inline int depth() const { return m_screen_depth; }
+    inline int colorsPerChannel() const { return m_colors_per_channel; }
+    int screenNum() const { return m_screen_num; }
+    Visual *visual() const { return m_visual; }
+    unsigned long getSqrt(unsigned int val) const;
+
+    /**
+       Render to pixmap
+       @param width width of pixmap
+       @param height height of pixmap
+       @param src_texture texture type to render
+       @return pixmap of the rendered image, on failure None
+    */
+    Pixmap renderImage(unsigned int width, unsigned int height,
+                       const FbTk::Texture &src_texture);
+
+    void installRootColormap();
+    void removeImage(Pixmap thepix);
+    void colorTables(const unsigned char **, const unsigned char **, const unsigned char **,
+                     int *, int *, int *, int *, int *, int *) const;
+    void getXColorTable(XColor **, int *);
+    void getGradientBuffers(unsigned int, unsigned int,
+                            unsigned int **, unsigned int **);
+    void setDither(bool d) { m_dither = d; }
+    void setColorsPerChannel(int cpc);
+
+    virtual void timeout();
+
+private:
+    /** 
+        Search cache for a specific pixmap
+        @return None if no cache was found
+    */
+    Pixmap searchCache(unsigned int width, unsigned int height, unsigned long texture_type, 
+                       const FbTk::Color &color, const FbTk::Color &color_to) const;
+
+    void createColorTable();
+    bool m_dither;
+
+    Timer m_timer;
+
+    Colormap m_colormap;
+
+    Window m_root_window;
+
+    XColor *m_colors; ///< color table
+    unsigned int m_num_colors; ///< number of colors in color table
+
+    Visual *m_visual;
+
+    int bits_per_pixel, red_offset, green_offset, blue_offset,
+        red_bits, green_bits, blue_bits;
+    int m_colors_per_channel; ///< number of colors per channel
+    int m_screen_depth; ///< bit depth of screen
+    int m_screen_num;  ///< screen number
+    unsigned char red_color_table[256], green_color_table[256],
+        blue_color_table[256];
+    unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
+        grad_buffer_height;
+
+    static unsigned long *sqrt_table; /// sqrt lookup table
+
+    typedef struct Cache {
+        Pixmap pixmap;
+
+        unsigned int count, width, height;
+        unsigned long pixel1, pixel2, texture;
+    } Cache;
+        
+    unsigned long cache_max;
+    typedef std::list<Cache *> CacheList;
+
+    mutable CacheList cache;
+};
+
+}; // end namespace FbTk
+
+#endif // FBTK_IMAGECONTROL_HH
+