Dogcows Code - chaz/openbox/blob - otk/truerendercontrol.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef    HAVE_CONFIG_H
   4 #  include "../config.h"
   5 #endif // HAVE_CONFIG_H
   6
   7 #include "truerendercontrol.hh"
   8 #include "display.hh"
   9 #include "screeninfo.hh"
  10 #include "surface.hh"
  11 #include "rendertexture.hh"
  12
  13 extern "C" {
  14 #ifdef    HAVE_STDLIB_H
  15 #  include <stdlib.h>
  16 #endif // HAVE_STDLIB_H
  17
  18 #include "../src/gettext.h"
  19 #define _(str) gettext(str)
  20 }
  21
  22 namespace otk {
  23
  24 TrueRenderControl::TrueRenderControl(int screen)
  25   : RenderControl(screen),
  26     _red_offset(0),
  27     _green_offset(0),
  28     _blue_offset(0)
  29 {
  30   const ScreenInfo *info = display->screenInfo(_screen);
  31   XImage *timage = XCreateImage(**display, info->visual(), info->depth(),
  32                                 ZPixmap, 0, NULL, 1, 1, 32, 0);
  33   printf("Initializing TrueColor RenderControl\n");
  34
  35   unsigned long red_mask, green_mask, blue_mask;
  36
  37   // find the offsets for each color in the visual's masks
  38   red_mask = timage->red_mask;
  39   green_mask = timage->green_mask;
  40   blue_mask = timage->blue_mask;
  41
  42   while (! (red_mask & 1))   { _red_offset++;   red_mask   >>= 1; }
  43   while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
  44   while (! (blue_mask & 1))  { _blue_offset++;  blue_mask  >>= 1; }
  45
  46   _red_shift = _green_shift = _blue_shift = 8;
  47   while (red_mask)   { red_mask   >>= 1; _red_shift--;   }
  48   while (green_mask) { green_mask >>= 1; _green_shift--; }
  49   while (blue_mask)  { blue_mask  >>= 1; _blue_shift--;  }
  50   XFree(timage);
  51 }
  52
  53 TrueRenderControl::~TrueRenderControl()
  54 {
  55   printf("Destroying TrueColor RenderControl\n");
  56 }
  57
  58 void TrueRenderControl::drawGradientBackground(
  59      Surface &sf, const RenderTexture &texture) const
  60 {
  61   unsigned int r,g,b;
  62   int w = sf.width(), h = sf.height(), off, x;
  63
  64   const ScreenInfo *info = display->screenInfo(_screen);
  65   XImage *im = XCreateImage(**display, info->visual(), info->depth(),
  66                             ZPixmap, 0, NULL, w, h, 32, 0);
  67   im->byte_order = endian;
  68   pixel32 *data = new pixel32[sf.height()*sf.width()];
  69   pixel32 current;
  70
  71   switch (texture.gradient()) {
  72   case RenderTexture::Vertical:
  73     verticalGradient(sf, texture, data);
  74     break;
  75   case RenderTexture::Diagonal:
  76     diagonalGradient(sf, texture, data);
  77     break;
  78   case RenderTexture::CrossDiagonal:
  79     crossDiagonalGradient(sf, texture, data);
  80     break;
  81   default:
  82     printf("unhandled gradient\n");
  83   }
  84
  85   if (texture.relief() == RenderTexture::Flat && texture.border()) {
  86     r = texture.borderColor().red();
  87     g = texture.borderColor().green();
  88     b = texture.borderColor().blue();
  89     current = (r << default_red_shift)
  90             + (g << default_green_shift)
  91             + (b << default_blue_shift);
  92     for (off = 0, x = 0; x < w; ++x, off++) {
  93       *(data + off) = current;
  94       *(data + off + ((h-1) * w)) = current;
  95     }
  96     for (off = 0, x = 0; x < h; ++x, off++) {
  97       *(data + (off * w)) = current;
  98       *(data + (off * w) + w - 1) = current;
  99     }
 100   }
 101
 102   if (texture.relief() != RenderTexture::Flat) {
 103     if (texture.bevel() == RenderTexture::Bevel1) {
 104       for (off = 1, x = 1; x < w - 1; ++x, off++)
 105         highlight(data + off,
 106                   data + off + (h-1) * w,
 107                   texture.relief()==RenderTexture::Raised);
 108       for (off = 0, x = 0; x < h; ++x, off++)
 109         highlight(data + off * w,
 110                   data + off * w + w - 1,
 111                   texture.relief()==RenderTexture::Raised);
 112     }
 113
 114     if (texture.bevel() == RenderTexture::Bevel2) {
 115       for (off = 2, x = 2; x < w - 2; ++x, off++)
 116         highlight(data + off + w,
 117                   data + off + (h-2) * w,
 118                   texture.relief()==RenderTexture::Raised);
 119       for (off = 1, x = 1; x < h-1; ++x, off++)
 120         highlight(data + off * w + 1,
 121                   data + off * w + w - 2,
 122                   texture.relief()==RenderTexture::Raised);
 123     }
 124   }
 125
 126   reduceDepth(im, data);
 127
 128   im->data = (char*) data;
 129
 130   sf.setPixmap(im);
 131
 132   delete [] im->data;
 133   im->data = NULL;
 134   XDestroyImage(im);
 135 }
 136
 137 void TrueRenderControl::verticalGradient(Surface &sf,
 138                                          const RenderTexture &texture,
 139                                          pixel32 *data) const
 140 {
 141   pixel32 current;
 142   float dr, dg, db;
 143   unsigned int r,g,b;
 144
 145   dr = (float)(texture.secondary_color().red() - texture.color().red());
 146   dr/= (float)sf.height();
 147
 148   dg = (float)(texture.secondary_color().green() - texture.color().green());
 149   dg/= (float)sf.height();
 150
 151   db = (float)(texture.secondary_color().blue() - texture.color().blue());
 152   db/= (float)sf.height();
 153
 154   for (int y = 0; y < sf.height(); ++y) {
 155     r = texture.color().red() + (int)(dr * y);
 156     g = texture.color().green() + (int)(dg * y);
 157     b = texture.color().blue() + (int)(db * y);
 158     current = (r << default_red_shift)
 159             + (g << default_green_shift)
 160             + (b << default_blue_shift);
 161     for (int x = 0; x < sf.width(); ++x, ++data)
 162       *data = current;
 163   }
 164 }
 165
 166 void TrueRenderControl::diagonalGradient(Surface &sf,
 167                                          const RenderTexture &texture,
 168                                          pixel32 *data) const
 169 {
 170   pixel32 current;
 171   float drx, dgx, dbx, dry, dgy, dby;
 172   unsigned int r,g,b;
 173
 174
 175   for (int y = 0; y < sf.height(); ++y) {
 176     drx = (float)(texture.secondary_color().red() - texture.color().red());
 177     dry = drx/(float)sf.height();
 178     drx/= (float)sf.width();
 179
 180     dgx = (float)(texture.secondary_color().green() - texture.color().green());
 181     dgy = dgx/(float)sf.height();
 182     dgx/= (float)sf.width();
 183
 184     dbx = (float)(texture.secondary_color().blue() - texture.color().blue());
 185     dby = dbx/(float)sf.height();
 186     dbx/= (float)sf.width();
 187     for (int x = 0; x < sf.width(); ++x, ++data) {
 188       r = texture.color().red() + ((int)(drx * x) + (int)(dry * y))/2;
 189       g = texture.color().green() + ((int)(dgx * x) + (int)(dgy * y))/2;
 190       b = texture.color().blue() + ((int)(dbx * x) + (int)(dby * y))/2;
 191       current = (r << default_red_shift)
 192               + (g << default_green_shift)
 193               + (b << default_blue_shift);
 194       *data = current;
 195     }
 196   }
 197 }
 198
 199 void TrueRenderControl::crossDiagonalGradient(Surface &sf,
 200                                               const RenderTexture &texture,
 201                                               pixel32 *data) const
 202 {
 203   pixel32 current;
 204   float drx, dgx, dbx, dry, dgy, dby;
 205   unsigned int r,g,b;
 206
 207   for (int y = 0; y < sf.height(); ++y) {
 208     drx = (float)(texture.secondary_color().red() - texture.color().red());
 209     dry = drx/(float)sf.height();
 210     drx/= (float)sf.width();
 211
 212     dgx = (float)(texture.secondary_color().green() - texture.color().green());
 213     dgy = dgx/(float)sf.height();
 214     dgx/= (float)sf.width();
 215
 216     dbx = (float)(texture.secondary_color().blue() - texture.color().blue());
 217     dby = dbx/(float)sf.height();
 218     dbx/= (float)sf.width();
 219     for (int x = sf.width(); x > 0; --x, ++data) {
 220       r = texture.color().red() + ((int)(drx * (x-1)) + (int)(dry * y))/2;
 221       g = texture.color().green() + ((int)(dgx * (x-1)) + (int)(dgy * y))/2;
 222       b = texture.color().blue() + ((int)(dbx * (x-1)) + (int)(dby * y))/2;
 223       current = (r << default_red_shift)
 224               + (g << default_green_shift)
 225               + (b << default_blue_shift);
 226       *data = current;
 227     }
 228   }
 229 }
 230
 231 void TrueRenderControl::reduceDepth(XImage *im, pixel32 *data) const
 232 {
 233 // since pixel32 is the largest possible pixel size, we can share the array
 234   int r, g, b;
 235   int x,y;
 236   pixel16 *p = (pixel16*) data;
 237   switch (im->bits_per_pixel) {
 238   case 32:
 239     if ((_red_offset != default_red_shift) ||
 240         (_blue_offset != default_blue_shift) ||
 241         (_green_offset != default_green_shift)) {
 242       printf("cross endian conversion\n");
 243       for (y = 0; y < im->height; y++) {
 244         for (x = 0; x < im->width; x++) {
 245           r = (data[x] >> default_red_shift) & 0xFF;
 246           g = (data[x] >> default_green_shift) & 0xFF;
 247           b = (data[x] >> default_blue_shift) & 0xFF;
 248           data[x] = (r << _red_offset) + (g << _green_offset) +
 249             (b << _blue_offset);
 250         }
 251         data += im->width;
 252       }
 253    }
 254    return;
 255   case 16:
 256     for (y = 0; y < im->height; y++) {
 257       for (x = 0; x < im->width; x++) {
 258         r = (data[x] >> default_red_shift) & 0xFF;
 259         r = r >> _red_shift;
 260         g = (data[x] >> default_green_shift) & 0xFF;
 261         g = g >> _green_shift;
 262         b = (data[x] >> default_blue_shift) & 0xFF;
 263         b = b >> _blue_shift;
 264         p[x] = (r << _red_offset) + (g << _green_offset) + (b << _blue_offset);
 265       }
 266       data += im->width;
 267       p += im->bytes_per_line/2;
 268     }
 269     break;
 270   default:
 271     printf("your bit depth is currently unhandled\n");
 272   }
 273 }
 274
 275 void TrueRenderControl::highlight(pixel32 *x, pixel32 *y, bool raised) const
 276 {
 277   int r, g, b;
 278
 279   pixel32 *up, *down;
 280   if (raised) {
 281     up = x;
 282     down = y;
 283   } else {
 284     up = y;
 285     down = x;
 286   }
 287   r = (*up >> default_red_shift) & 0xFF;
 288   r += r >> 1;
 289   g = (*up >> default_green_shift) & 0xFF;
 290   g += g >> 1;
 291   b = (*up >> default_blue_shift) & 0xFF;
 292   b += b >> 1;
 293   if (r > 255) r = 255;
 294   if (g > 255) g = 255;
 295   if (b > 255) b = 255;
 296   *up = (r << default_red_shift) + (g << default_green_shift)
 297       + (b << default_blue_shift);
 298
 299   r = (*down >> default_red_shift) & 0xFF;
 300   r = (r >> 1) + (r >> 2);
 301   g = (*down >> default_green_shift) & 0xFF;
 302   g = (g >> 1) + (g >> 2);
 303   b = (*down >> default_blue_shift) & 0xFF;
 304   b = (b >> 1) + (b >> 2);
 305   *down = (r << default_red_shift) + (g << default_green_shift)
 306         + (b << default_blue_shift);
 307 }
 308
 309 void TrueRenderControl::drawBackground(Surface& sf,
 310                                        const RenderTexture &texture) const
 311 {
 312   assert(_screen == sf._screen);
 313   assert(_screen == texture.color().screen());
 314
 315   if (texture.gradient() == RenderTexture::Solid)
 316     drawSolidBackground(sf, texture);
 317   else
 318     drawGradientBackground(sf, texture);
 319 }
 320
 321 }