Dogcows Code - chaz/openbox/blob - otk_c/imagecontrol.c

   1 // -*- mode: C; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "../config.h"
   4 #include "imagecontrol.h"
   5 #include "timer.h"
   6 #include "screeninfo.h"
   7 #include "display.h"
   8
   9 typedef struct CachedImage {
  10   Pixmap pixmap;
  11
  12   unsigned int count, width, height;
  13   unsigned long pixel1, pixel2, texture;
  14 } CachedImage;
  15
  16 static void timeout(OtkImageControl *self);
  17 static void initColors(OtkImageControl *self, Visual *visual);
  18
  19 PyObject *OtkImageControl_New(int screen)
  20 {
  21   OtkImageControl *self;
  22   int count, i;
  23   XPixmapFormatValues *pmv;
  24
  25   self = PyObject_New(OtkImageControl, &OtkImageControl_Type);
  26
  27   self->screen = OtkDisplay_ScreenInfo(OBDisplay, screen);
  28
  29   self->timer = (OtkTimer*)OtkTimer_New((OtkTimeoutHandler)timeout, self);
  30   self->timer->timeout = 300000;
  31   OtkTimer_Start(self->timer);
  32   self->cache_max = 200;
  33
  34   self->dither = True; // default value
  35   self->cpc = 4; // default value
  36
  37   // get the BPP from the X server
  38   self->bpp = 0;
  39   if ((pmv = XListPixmapFormats(OBDisplay->display, &count))) {
  40     for (i = 0; i < count; i++)
  41       if (pmv[i].depth == self->screen->depth) {
  42         self->bpp = pmv[i].bits_per_pixel;
  43         break;
  44       }
  45     XFree(pmv);
  46   }
  47   if (!self->bpp) self->bpp = self->screen->depth;
  48   if (self->bpp >= 24) self->dither = False; // don't need dither at >= 24 bpp
  49
  50   self->grad_xbuffer = self->grad_ybuffer = NULL;
  51   self->grad_buffer_width = self->grad_buffer_height = 0;
  52   self->sqrt_table = NULL;
  53
  54   initColors(self, self->screen->visual);
  55
  56   return (PyObject*)self;
  57 }
  58
  59 static void initColors(OtkImageControl *self, Visual *visual)
  60 {
  61   // these are not used for !TrueColor
  62   self->red_offset = self->green_offset = self->blue_offset = 0;
  63   // these are not used for TrueColor
  64   self->colors = NULL;
  65   self->ncolors = 0;
  66
  67   // figure out all our color settings based on the visual type
  68   switch (visual->class) {
  69   case TrueColor: {
  70     int i;
  71     unsigned long red_mask, green_mask, blue_mask;
  72
  73     // find the offsets for each color in the visual's masks
  74     red_mask = visual->red_mask;
  75     green_mask = visual->green_mask;
  76     blue_mask = visual->blue_mask;
  77
  78     while (! (red_mask & 1)) { self->red_offset++; red_mask >>= 1; }
  79     while (! (green_mask & 1)) { self->green_offset++; green_mask >>= 1; }
  80     while (! (blue_mask & 1)) { self->blue_offset++; blue_mask >>= 1; }
  81
  82     // use the mask to determine the number of bits for each shade of color
  83     // so, best case, red_mask == 0xff (255), and so each bit is a different
  84     // shade!
  85     self->red_bits = 255 / red_mask;
  86     self->green_bits = 255 / green_mask;
  87     self->blue_bits = 255 / blue_mask;
  88
  89     // compute color tables, based on the number of bits for each shade
  90     for (i = 0; i < 256; i++) {
  91       self->red_color_table[i] = i / self->red_bits;
  92       self->green_color_table[i] = i / self->green_bits;
  93       self->blue_color_table[i] = i / self->blue_bits;
  94     }
  95     break;
  96   }
  97 /*
  98   case PseudoColor:
  99   case StaticColor: {
 100     ncolors = self->cpc * self->cpc * self->cpc; // cpc ^ 3
 101
 102     if (ncolors > (1 << self->screen->depth)) {
 103       self->cpc = (1 << self->screen->depth) / 3;
 104       ncolors = self->cpc * self->cpc * self->cpc; // cpc ^ 3
 105     }
 106
 107     if (self->cpc < 2 || self->ncolors > (1 << self->screen->depth)) {
 108       fprintf(stderr,
 109               "OtkImageControl_New: invalid colormap size %d "
 110               "(%d/%d/%d) - reducing",
 111               self->ncolors, self->cpc, self->cpc, self->cpc);
 112
 113       self->cpc = (1 << self->screen->depth) / 3;
 114     }
 115
 116     self->colors = malloc(sizeof(XColor) * self->ncolors);
 117     if (! self->colors) {
 118       fprintf(stderr, "OtkImageControl_New: error allocating colormap\n");
 119       exit(1);
 120     }
 121
 122     int i = 0, ii, p, r, g, b,
 123       bits = 255 / (colors_per_channel - 1);
 124
 125     red_bits = green_bits = blue_bits = bits;
 126
 127     for (i = 0; i < 256; i++)
 128       red_color_table[i] = green_color_table[i] = blue_color_table[i] =
 129         i / bits;
 130
 131     for (r = 0, i = 0; r < colors_per_channel; r++)
 132       for (g = 0; g < colors_per_channel; g++)
 133         for (b = 0; b < colors_per_channel; b++, i++) {
 134           colors[i].red = (r * 0xffff) / (colors_per_channel - 1);
 135           colors[i].green = (g * 0xffff) / (colors_per_channel - 1);
 136           colors[i].blue = (b * 0xffff) / (colors_per_channel - 1);;
 137           colors[i].flags = DoRed|DoGreen|DoBlue;
 138         }
 139
 140     for (i = 0; i < ncolors; i++) {
 141       if (! XAllocColor(OBDisplay::display, colormap, &colors[i])) {
 142         fprintf(stderr, "couldn't alloc color %i %i %i\n",
 143                 colors[i].red, colors[i].green, colors[i].blue);
 144         colors[i].flags = 0;
 145       } else {
 146         colors[i].flags = DoRed|DoGreen|DoBlue;
 147       }
 148     }
 149
 150     XColor icolors[256];
 151     int incolors = (((1 << screen_depth) > 256) ? 256 : (1 << screen_depth));
 152
 153     for (i = 0; i < incolors; i++)
 154       icolors[i].pixel = i;
 155
 156     XQueryColors(OBDisplay::display, colormap, icolors, incolors);
 157     for (i = 0; i < ncolors; i++) {
 158       if (! colors[i].flags) {
 159         unsigned long chk = 0xffffffff, pixel, close = 0;
 160
 161         p = 2;
 162         while (p--) {
 163           for (ii = 0; ii < incolors; ii++) {
 164             r = (colors[i].red - icolors[i].red) >> 8;
 165             g = (colors[i].green - icolors[i].green) >> 8;
 166             b = (colors[i].blue - icolors[i].blue) >> 8;
 167             pixel = (r * r) + (g * g) + (b * b);
 168
 169             if (pixel < chk) {
 170               chk = pixel;
 171               close = ii;
 172             }
 173
 174             colors[i].red = icolors[close].red;
 175             colors[i].green = icolors[close].green;
 176             colors[i].blue = icolors[close].blue;
 177
 178             if (XAllocColor(OBDisplay::display, colormap,
 179                             &colors[i])) {
 180               colors[i].flags = DoRed|DoGreen|DoBlue;
 181               break;
 182             }
 183           }
 184         }
 185       }
 186     }
 187
 188     break;
 189   }
 190
 191   case GrayScale:
 192   case StaticGray: {
 193     if (visual->c_class == StaticGray) {
 194       ncolors = 1 << screen_depth;
 195     } else {
 196       ncolors = colors_per_channel * colors_per_channel * colors_per_channel;
 197
 198       if (ncolors > (1 << screen_depth)) {
 199         colors_per_channel = (1 << screen_depth) / 3;
 200         ncolors =
 201           colors_per_channel * colors_per_channel * colors_per_channel;
 202       }
 203     }
 204
 205     if (colors_per_channel < 2 || ncolors > (1 << screen_depth)) {
 206       fprintf(stderr,
 207               "BImageControl::BImageControl: invalid colormap size %d "
 208               "(%d/%d/%d) - reducing",
 209               ncolors, colors_per_channel, colors_per_channel,
 210               colors_per_channel);
 211
 212       colors_per_channel = (1 << screen_depth) / 3;
 213     }
 214
 215     colors = new XColor[ncolors];
 216     if (! colors) {
 217       fprintf(stderr,
 218               "BImageControl::BImageControl: error allocating colormap\n");
 219       exit(1);
 220     }
 221
 222     int i = 0, ii, p, bits = 255 / (colors_per_channel - 1);
 223     red_bits = green_bits = blue_bits = bits;
 224
 225     for (i = 0; i < 256; i++)
 226       red_color_table[i] = green_color_table[i] = blue_color_table[i] =
 227         i / bits;
 228
 229     for (i = 0; i < ncolors; i++) {
 230       colors[i].red = (i * 0xffff) / (colors_per_channel - 1);
 231       colors[i].green = (i * 0xffff) / (colors_per_channel - 1);
 232       colors[i].blue = (i * 0xffff) / (colors_per_channel - 1);;
 233       colors[i].flags = DoRed|DoGreen|DoBlue;
 234
 235       if (! XAllocColor(OBDisplay::display, colormap,
 236                         &colors[i])) {
 237         fprintf(stderr, "couldn't alloc color %i %i %i\n",
 238                 colors[i].red, colors[i].green, colors[i].blue);
 239         colors[i].flags = 0;
 240       } else {
 241         colors[i].flags = DoRed|DoGreen|DoBlue;
 242       }
 243     }
 244
 245     XColor icolors[256];
 246     int incolors = (((1 << screen_depth) > 256) ? 256 :
 247                     (1 << screen_depth));
 248
 249     for (i = 0; i < incolors; i++)
 250       icolors[i].pixel = i;
 251
 252     XQueryColors(OBDisplay::display, colormap, icolors, incolors);
 253     for (i = 0; i < ncolors; i++) {
 254       if (! colors[i].flags) {
 255         unsigned long chk = 0xffffffff, pixel, close = 0;
 256
 257         p = 2;
 258         while (p--) {
 259           for (ii = 0; ii < incolors; ii++) {
 260             int r = (colors[i].red - icolors[i].red) >> 8;
 261             int g = (colors[i].green - icolors[i].green) >> 8;
 262             int b = (colors[i].blue - icolors[i].blue) >> 8;
 263             pixel = (r * r) + (g * g) + (b * b);
 264
 265             if (pixel < chk) {
 266               chk = pixel;
 267               close = ii;
 268             }
 269
 270             colors[i].red = icolors[close].red;
 271             colors[i].green = icolors[close].green;
 272             colors[i].blue = icolors[close].blue;
 273
 274             if (XAllocColor(OBDisplay::display, colormap,
 275                             &colors[i])) {
 276               colors[i].flags = DoRed|DoGreen|DoBlue;
 277               break;
 278             }
 279           }
 280         }
 281       }
 282     }
 283
 284     break;
 285   }
 286 */
 287   default:
 288     fprintf(stderr, "OtkImageControl: unsupported visual class: %d\n",
 289             visual->class);
 290     exit(1);
 291   }
 292 }
 293
 294
 295 static void timeout(OtkImageControl *self)
 296 {
 297   (void)self;
 298 }
 299
 300
 301
 302 static void otkimagecontrol_dealloc(OtkImageControl* self)
 303 {
 304   Py_DECREF(self->screen);
 305   Py_DECREF(self->timer);
 306   PyObject_Del((PyObject*)self);
 307 }
 308
 309 PyTypeObject OtkImageControl_Type = {
 310   PyObject_HEAD_INIT(NULL)
 311   0,
 312   "OtkImageControl",
 313   sizeof(OtkImageControl),
 314   0,
 315   (destructor)otkimagecontrol_dealloc, /*tp_dealloc*/
 316   0,                            /*tp_print*/
 317   0,                            /*tp_getattr*/
 318   0,                            /*tp_setattr*/
 319   0,                            /*tp_compare*/
 320   0,                            /*tp_repr*/
 321   0,                            /*tp_as_number*/
 322   0,                            /*tp_as_sequence*/
 323   0,                            /*tp_as_mapping*/
 324   0,                            /*tp_hash */
 325 };