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 "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   printf("Initializing TrueColor RenderControl\n");
  31
  32   Visual *visual = display->screenInfo(_screen)->visual();
  33   unsigned long red_mask, green_mask, blue_mask;
  34
  35   // find the offsets for each color in the visual's masks
  36   red_mask = visual->red_mask;
  37   green_mask = visual->green_mask;
  38   blue_mask = visual->blue_mask;
  39
  40   while (! (red_mask & 1))   { _red_offset++;   red_mask   >>= 1; }
  41   while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
  42   while (! (blue_mask & 1))  { _blue_offset++;  blue_mask  >>= 1; }
  43
  44   _red_shift = _green_shift = _blue_shift = 8;
  45   while (red_mask)   { red_mask   >>= 1; _red_shift--;   }
  46   while (green_mask) { green_mask >>= 1; _green_shift--; }
  47   while (blue_mask)  { blue_mask  >>= 1; _blue_shift--;  }
  48 }
  49
  50 TrueRenderControl::~TrueRenderControl()
  51 {
  52   printf("Destroying TrueColor RenderControl\n");
  53
  54
  55 }
  56
  57
  58 static inline void renderPixel(XImage *im, unsigned char *dp,
  59                                unsigned long pixel)
  60 {
  61   unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst ? 1 : 0);
  62
  63   switch (bpp) {
  64   case  8: //  8bpp
  65     *dp++ = pixel;
  66     break;
  67   case 16: // 16bpp LSB
  68     *dp++ = pixel;
  69     *dp++ = pixel >> 8;
  70     break;
  71   case 17: // 16bpp MSB
  72     *dp++ = pixel >> 8;
  73     *dp++ = pixel;
  74     break;
  75   case 24: // 24bpp LSB
  76     *dp++ = pixel;
  77     *dp++ = pixel >> 8;
  78     *dp++ = pixel >> 16;
  79     break;
  80   case 25: // 24bpp MSB
  81     *dp++ = pixel >> 16;
  82     *dp++ = pixel >> 8;
  83     *dp++ = pixel;
  84     break;
  85   case 32: // 32bpp LSB
  86     *dp++ = pixel;
  87     *dp++ = pixel >> 8;
  88     *dp++ = pixel >> 16;
  89     *dp++ = pixel >> 24;
  90     break;
  91   case 33: // 32bpp MSB
  92     *dp++ = pixel >> 24;
  93     *dp++ = pixel >> 16;
  94     *dp++ = pixel >> 8;
  95     *dp++ = pixel;
  96     break;
  97   default:
  98     assert(false); // wtf?
  99   }
 100 }
 101
 102 void TrueRenderControl::drawGradientBackground(
 103      Surface &sf, const RenderTexture &texture) const
 104 {
 105   int w = sf.width(), h = sf.height(), off, x, y;
 106
 107   const ScreenInfo *info = display->screenInfo(_screen);
 108   XImage *im = XCreateImage(**display, info->visual(), info->depth(),
 109                             ZPixmap, 0, NULL, w, h, 32, 0);
 110
 111   pixel32 *data = new pixel32[sf.height()*sf.width()];
 112   pixel32 current;
 113   pixel32 *dp = data;
 114   float dr, dg, db;
 115   unsigned int r,g,b;
 116 //XXX: move this to seperate vgrad function
 117   dr = (float)(texture.secondary_color().red() - texture.color().red());
 118   dr/= (float)sf.height();
 119
 120   dg = (float)(texture.secondary_color().green() - texture.color().green());
 121   dg/= (float)sf.height();
 122
 123   db = (float)(texture.secondary_color().blue() - texture.color().blue());
 124   db/= (float)sf.height();
 125
 126   for (y = 0; y < h; ++y) {
 127     r = texture.color().red() + (int)(dr * y);
 128     g = texture.color().green() + (int)(dg * y);
 129     b = texture.color().blue() + (int)(db * y);
 130     current = (r << 16)
 131             + (g << 8)
 132             + b;
 133     for (x = 0; x < w; ++x, dp ++)
 134       *dp = current;
 135   }
 136 //XXX: end of vgrad
 137
 138   if (texture.relief() == RenderTexture::Flat && texture.border()) {
 139     r = texture.borderColor().red();
 140     g = texture.borderColor().green();
 141     b = texture.borderColor().blue();
 142     current = (r << 16)
 143             + (g << 8)
 144             + b;
 145     for (off = 0, x = 0; x < w; ++x, off++) {
 146       *(data + off) = current;
 147       *(data + off + ((h-1) * w)) = current;
 148     }
 149     for (off = 0, x = 0; x < h; ++x, off++) {
 150       *(data + (off * w)) = current;
 151       *(data + (off * w) + w - 1) = current;
 152     }
 153   }
 154
 155   if (texture.relief() != RenderTexture::Flat) {
 156     if (texture.bevel() == RenderTexture::Bevel1) {
 157       for (off = 1, x = 1; x < w - 1; ++x, off++)
 158         highlight(data + off,
 159                   data + off + (h-1) * w,
 160                   texture.relief()==RenderTexture::Raised);
 161       for (off = 0, x = 0; x < h; ++x, off++)
 162         highlight(data + off * w,
 163                   data + off * w + w - 1,
 164                   texture.relief()==RenderTexture::Raised);
 165     }
 166
 167     if (texture.bevel() == RenderTexture::Bevel2) {
 168       for (off = 2, x = 2; x < w - 2; ++x, off++)
 169         highlight(data + off + w,
 170                   data + off + (h-2) * w,
 171                   texture.relief()==RenderTexture::Raised);
 172       for (off = 1, x = 1; x < h-1; ++x, off++)
 173         highlight(data + off * w + 1,
 174                   data + off * w + w - 2,
 175                   texture.relief()==RenderTexture::Raised);
 176     }
 177   }
 178
 179   reduceDepth(im, data);
 180
 181   im->data = (char*) data;
 182
 183   sf.setPixmap(im);
 184
 185   delete [] im->data;
 186   im->data = NULL;
 187   XDestroyImage(im);
 188 }
 189
 190 void TrueRenderControl::reduceDepth(XImage *im, pixel32 *data) const
 191 {
 192   int r, g, b;
 193   int x,y;
 194   pixel16 *p = (pixel16 *)data;
 195   switch (im->bits_per_pixel) {
 196   case 32:
 197     return;
 198   case 16:
 199     for (y = 0; y < im->height; y++) {
 200       for (x = 0; x < im->width; x++) {
 201         r = (data[x] >> 16) & 0xFF;
 202         r = r >> _red_shift;
 203         g = (data[x] >> 8) & 0xFF;
 204         g = g >> _green_shift;
 205         b = data[x] & 0xFF;
 206         b = b >> _blue_shift;
 207         p[x] = (r << _red_offset) + (g << _green_offset) + (b << _blue_offset);
 208       }
 209       data += im->width;
 210       p += im->bytes_per_line/2;
 211     }
 212     break;
 213   default:
 214     printf("your bit depth is currently unhandled\n");
 215   }
 216 }
 217
 218 void TrueRenderControl::highlight(pixel32 *x, pixel32 *y, bool raised) const
 219 {
 220   int r, g, b;
 221
 222   pixel32 *up, *down;
 223   if (raised) {
 224     up = x;
 225     down = y;
 226   } else {
 227     up = y;
 228     down = x;
 229   }
 230   r = (*up >> 16) & 0xFF;
 231   r += r >> 1;
 232   g = (*up >> 8) & 0xFF;
 233   g += g >> 1;
 234   b = *up & 0xFF;
 235   b += b >> 1;
 236   if (r > 255) r = 255;
 237   if (g > 255) g = 255;
 238   if (b > 255) b = 255;
 239   *up = (r << 16) + (g << 8) + b;
 240
 241   r = (*down >> 16) & 0xFF;
 242   r = (r >> 1) + (r >> 2);
 243   g = (*down >> 8) & 0xFF;
 244   g = (g >> 1) + (g >> 2);
 245   b = *down & 0xFF;
 246   b = (b >> 1) + (b >> 2);
 247   *down = (r << 16) + (g << 8) + b;
 248 }
 249 void TrueRenderControl::drawBackground(Surface& sf,
 250                                        const RenderTexture &texture) const
 251 {
 252   assert(_screen == sf._screen);
 253   assert(_screen == texture.color().screen());
 254
 255   if (texture.gradient() == RenderTexture::Solid) {
 256     drawSolidBackground(sf, texture);
 257   } else {
 258     drawGradientBackground(sf, texture);
 259   }
 260 }
 261
 262 }