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00001 // ImageControl.hh for FbTk - Fluxbox Toolkit
00002 // Copyright (c) 2001 - 2003 Henrik Kinnunen (fluxbox at users.sourceforge.net)
00003 //
00004 // from Image.hh for Blackbox - an X11 Window manager
00005 // Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
00006 //
00007 // Permission is hereby granted, free of charge, to any person obtaining a
00008 // copy of this software and associated documentation files (the "Software"),
00009 // to deal in the Software without restriction, including without limitation
00010 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
00011 // and/or sell copies of the Software, and to permit persons to whom the
00012 // Software is furnished to do so, subject to the following conditions:
00013 //
00014 // The above copyright notice and this permission notice shall be included in
00015 // all copies or substantial portions of the Software.
00016 //
00017 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00018 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00019 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
00020 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00021 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00022 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
00023 // DEALINGS IN THE SOFTWARE.
00024 
00025 // $Id: ImageControl.hh,v 1.9 2004/01/11 12:40:47 fluxgen Exp $
00026 
00027 #ifndef  FBTK_IMAGECONTROL_HH
00028 #define  FBTK_IMAGECONTROL_HH
00029 
00030 #include "Texture.hh"
00031 #include "Timer.hh"
00032 #include "NotCopyable.hh"
00033 
00034 #include <X11/Xlib.h>
00035 #include <X11/Xutil.h>
00036 #include <list>
00037 #include <set>
00038 
00039 namespace FbTk {
00040 
00042 class ImageControl: private NotCopyable {
00043 public:
00044     ImageControl(int screen_num, bool dither = false, int colors_per_channel = 4,
00045                   unsigned long cache_timeout = 300000l, unsigned long cache_max = 200l);
00046     virtual ~ImageControl();
00047 
00048     inline bool doDither() const { return m_dither; }
00049     inline int bitsPerPixel() const { return bits_per_pixel; }
00050     inline int depth() const { return m_screen_depth; }
00051     inline int colorsPerChannel() const { return m_colors_per_channel; }
00052     int screenNum() const { return m_screen_num; }
00053     Visual *visual() const { return m_visual; }
00054     unsigned long getSqrt(unsigned int val) const;
00055 
00063     Pixmap renderImage(unsigned int width, unsigned int height,
00064                        const FbTk::Texture &src_texture);
00065 
00066     void installRootColormap();
00067     void removeImage(Pixmap thepix);
00068     void colorTables(const unsigned char **, const unsigned char **, const unsigned char **,
00069                      int *, int *, int *, int *, int *, int *) const;
00070     void getXColorTable(XColor **, int *);
00071     void getGradientBuffers(unsigned int, unsigned int,
00072                             unsigned int **, unsigned int **);
00073     void setDither(bool d) { m_dither = d; }
00074     void setColorsPerChannel(int cpc);
00075 
00076     void cleanCache();
00077 private:
00082     Pixmap searchCache(unsigned int width, unsigned int height, const Texture &text) const;
00083 
00084     void createColorTable();
00085     bool m_dither;
00086     Timer m_timer;
00087 
00088     Colormap m_colormap;
00089 
00090     Window m_root_window;
00091 
00092     XColor *m_colors; 
00093     unsigned int m_num_colors; 
00094 
00095     Visual *m_visual;
00096 
00097     int bits_per_pixel, red_offset, green_offset, blue_offset,
00098         red_bits, green_bits, blue_bits;
00099     int m_colors_per_channel; 
00100     int m_screen_depth; 
00101     int m_screen_num;  
00102     unsigned char red_color_table[256], green_color_table[256],
00103         blue_color_table[256];
00104     unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
00105         grad_buffer_height;
00106 
00107     static unsigned long *sqrt_table; 
00108 
00109     typedef struct Cache {
00110         Pixmap pixmap;
00111         Pixmap texture_pixmap;
00112         unsigned int count, width, height;
00113         unsigned long pixel1, pixel2, texture;
00114     } Cache;
00115 
00116     struct ltCacheEntry {
00117         bool operator()(const Cache* s1, const Cache* s2) const {
00118             return (s1->width  < s2->width  || s1->width == s2->width && 
00119                     (s1->height < s2->height || s1->height == s2->height &&
00120                      (s1->texture < s2->texture || s1->texture == s2->texture &&
00121                       s1->pixel1 < s2->pixel1 || s1->pixel1 == s2->pixel1 &&
00122                       (s1->texture & FbTk::Texture::GRADIENT) &&
00123                        s1->pixel2 < s2->pixel2)
00124                         ));
00125         }
00126     };
00127 
00128     
00129     unsigned long cache_max;
00130     typedef std::list<Cache *> CacheList;
00131 
00132     mutable CacheList cache;
00133     static bool s_timed_cache;
00134 };
00135 
00136 } // end namespace FbTk
00137 
00138 #endif // FBTK_IMAGECONTROL_HH
00139
ImageControl.hh

Fluxbox CVS-Jan-2003
