Dogcows Code - chaz/openbox/blob - src/Image.h

   1 // Image.h for Openbox
   2 // Copyright (c) 2001 Sean 'Shaleh' Perry <shaleh@debian.org>
   3 // Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining a
   6 // copy of this software and associated documentation files (the "Software"),
   7 // to deal in the Software without restriction, including without limitation
   8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9 // and/or sell copies of the Software, and to permit persons to whom the
  10 // Software is furnished to do so, subject to the following conditions:
  11 //
  12 // The above copyright notice and this permission notice shall be included in
  13 // all copies or substantial portions of the Software.
  14 //
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21 // DEALINGS IN THE SOFTWARE.
  22
  23 #ifndef   __Image_hh
  24 #define   __Image_hh
  25
  26 #include <X11/Xlib.h>
  27 #include <X11/Xutil.h>
  28
  29 #include "Timer.h"
  30 #include <list>
  31
  32 class ScreenInfo;
  33 class BImage;
  34 class BImageControl;
  35
  36
  37 // bevel options
  38 #define BImage_Flat             (1l<<1)
  39 #define BImage_Sunken           (1l<<2)
  40 #define BImage_Raised           (1l<<3)
  41
  42 // textures
  43 #define BImage_Solid            (1l<<4)
  44 #define BImage_Gradient         (1l<<5)
  45
  46 // gradients
  47 #define BImage_Horizontal       (1l<<6)
  48 #define BImage_Vertical         (1l<<7)
  49 #define BImage_Diagonal         (1l<<8)
  50 #define BImage_CrossDiagonal    (1l<<9)
  51 #define BImage_Rectangle        (1l<<10)
  52 #define BImage_Pyramid          (1l<<11)
  53 #define BImage_PipeCross        (1l<<12)
  54 #define BImage_Elliptic         (1l<<13)
  55
  56 // bevel types
  57 #define BImage_Bevel1           (1l<<14)
  58 #define BImage_Bevel2           (1l<<15)
  59
  60 // inverted image
  61 #define BImage_Invert           (1l<<16)
  62
  63 // parent relative image
  64 #define BImage_ParentRelative   (1l<<17)
  65
  66 #ifdef    INTERLACE
  67 // fake interlaced image
  68 #  define BImage_Interlaced     (1l<<18)
  69 #endif // INTERLACE
  70
  71 class BColor {
  72 private:
  73   int allocated;
  74   unsigned char red, green, blue;
  75   unsigned long pixel;
  76
  77 public:
  78   BColor(char r = 0, char g = 0, char b = 0)
  79     { red = r; green = g; blue = b; pixel = 0; allocated = 0; }
  80
  81   inline const int &isAllocated(void) const { return allocated; }
  82
  83   inline const unsigned char &getRed(void) const { return red; }
  84   inline const unsigned char &getGreen(void) const { return green; }
  85   inline const unsigned char &getBlue(void) const { return blue; }
  86
  87   inline const unsigned long &getPixel(void) const { return pixel; }
  88
  89   inline void setAllocated(int a) { allocated = a; }
  90   inline void setRGB(char r, char g, char b) { red = r; green = g; blue = b; }
  91   inline void setPixel(unsigned long p) { pixel = p; }
  92 };
  93
  94
  95 class BTexture {
  96 private:
  97   BColor color, colorTo, hiColor, loColor;
  98   unsigned long texture;
  99
 100 public:
 101   BTexture(void) { texture = 0; }
 102
 103   inline BColor *getColor(void) { return &color; }
 104   inline BColor *getColorTo(void) { return &colorTo; }
 105   inline BColor *getHiColor(void) { return &hiColor; }
 106   inline BColor *getLoColor(void) { return &loColor; }
 107
 108   inline const unsigned long &getTexture(void) const { return texture; }
 109
 110   inline void setTexture(unsigned long t) { texture = t; }
 111   inline void addTexture(unsigned long t) { texture |= t; }
 112 };
 113
 114
 115 class BImage {
 116 private:
 117   BImageControl &control;
 118
 119 #ifdef    INTERLACE
 120   Bool interlaced;
 121 #endif // INTERLACE
 122
 123   XColor *colors;
 124
 125   BColor *from, *to;
 126   int red_offset, green_offset, blue_offset, red_bits, green_bits, blue_bits,
 127     ncolors, cpc, cpccpc;
 128   unsigned char *red, *green, *blue, *red_table, *green_table, *blue_table;
 129   unsigned int width, height, *xtable, *ytable;
 130
 131
 132 protected:
 133   Pixmap renderPixmap(void);
 134
 135   XImage *renderXImage(void);
 136
 137   void invert(void);
 138   void bevel1(void);
 139   void bevel2(void);
 140   void dgradient(void);
 141   void egradient(void);
 142   void hgradient(void);
 143   void pgradient(void);
 144   void rgradient(void);
 145   void vgradient(void);
 146   void cdgradient(void);
 147   void pcgradient(void);
 148
 149
 150 public:
 151   BImage(BImageControl &, unsigned int, unsigned int);
 152   ~BImage(void);
 153
 154   Pixmap render(BTexture *);
 155   Pixmap render_solid(BTexture *);
 156   Pixmap render_gradient(BTexture *);
 157 };
 158
 159
 160 class BImageControl : public TimeoutHandler {
 161 private:
 162   Bool dither;
 163   BaseDisplay &basedisplay;
 164   ScreenInfo &screeninfo;
 165 #ifdef    TIMEDCACHE
 166   BTimer *timer;
 167 #endif // TIMEDCACHE
 168
 169   Colormap colormap;
 170
 171   Window window;
 172   XColor *colors;
 173   int colors_per_channel, ncolors, screen_number, screen_depth,
 174     bits_per_pixel, red_offset, green_offset, blue_offset,
 175     red_bits, green_bits, blue_bits;
 176   unsigned char red_color_table[256], green_color_table[256],
 177     blue_color_table[256];
 178   unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
 179     grad_buffer_height;
 180   unsigned long *sqrt_table, cache_max;
 181
 182   typedef struct Cache {
 183     Pixmap pixmap;
 184
 185     unsigned int count, width, height;
 186     unsigned long pixel1, pixel2, texture;
 187   } Cache;
 188
 189   typedef std::list<Cache*> CacheList;
 190   CacheList cache;
 191
 192
 193 protected:
 194   Pixmap searchCache(unsigned int, unsigned int, unsigned long, BColor *,
 195                      BColor *);
 196
 197
 198 public:
 199   BImageControl(BaseDisplay &, ScreenInfo &, Bool = False, int = 4,
 200                 unsigned long = 300000l, unsigned long = 200l);
 201   virtual ~BImageControl(void);
 202
 203   inline BaseDisplay &getBaseDisplay(void) { return basedisplay; }
 204
 205   inline const Bool &doDither(void) { return dither; }
 206
 207   inline ScreenInfo &getScreenInfo(void) { return screeninfo; }
 208
 209   inline const Window &getDrawable(void) const { return window; }
 210
 211   inline Visual *getVisual(void) const { return screeninfo.getVisual(); }
 212
 213   inline const int &getBitsPerPixel(void) const { return bits_per_pixel; }
 214   inline const int &getDepth(void) const { return screen_depth; }
 215   inline const int &getColorsPerChannel(void) const
 216     { return colors_per_channel; }
 217
 218   unsigned long getColor(const char *);
 219   unsigned long getColor(const char *, unsigned char *, unsigned char *,
 220                          unsigned char *);
 221   unsigned long getSqrt(unsigned int);
 222
 223   Pixmap renderImage(unsigned int, unsigned int, BTexture *);
 224
 225   void installRootColormap(void);
 226   void removeImage(Pixmap);
 227   void getColorTables(unsigned char **, unsigned char **, unsigned char **,
 228                       int *, int *, int *, int *, int *, int *);
 229   void getXColorTable(XColor **, int *);
 230   void getGradientBuffers(unsigned int, unsigned int,
 231                           unsigned int **, unsigned int **);
 232   void setDither(Bool d) { dither = d; }
 233   void setColorsPerChannel(int);
 234   void parseTexture(BTexture *, const char *);
 235   void parseColor(BColor *, const char * = 0);
 236
 237   virtual void timeout(void);
 238 };
 239
 240
 241 #endif // __Image_hh
 242