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 "widget.hh"
  11
  12 extern "C" {
  13 #ifdef    HAVE_STDLIB_H
  14 #  include <stdlib.h>
  15 #endif // HAVE_STDLIB_H
  16
  17 #include "gettext.h"
  18 #define _(str) gettext(str)
  19 }
  20
  21 namespace otk {
  22
  23 TrueRenderControl::TrueRenderControl(const ScreenInfo *screen)
  24   : RenderControl(screen)
  25 {
  26   printf("Initializing TrueColor RenderControl\n");
  27
  28   unsigned long red_mask, green_mask, blue_mask;
  29
  30   // find the offsets for each color in the visual's masks
  31   red_mask = screen->visual()->red_mask;
  32   green_mask = screen->visual()->green_mask;
  33   blue_mask = screen->visual()->blue_mask;
  34
  35   while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
  36   while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
  37   while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
  38
  39   // scale available colorspace to match our 256x256x256 cube
  40   _red_bits = 255 / red_mask;
  41   _green_bits = 255 / green_mask;
  42   _blue_bits = 255 / blue_mask;
  43
  44   for (int i = 0; i < 256; i++) {
  45     _red_color_table[i] = i / _red_bits;
  46     _green_color_table[i] = i / _green_bits;
  47     _blue_color_table[i] = i / _blue_bits;
  48   }
  49 }
  50
  51 TrueRenderControl::~TrueRenderControl()
  52 {
  53   printf("Destroying TrueColor RenderControl\n");
  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::render(Widget *wi)
 103 {
 104   assert(wi);
 105
 106   XGCValues gcv;
 107   gcv.cap_style = CapProjecting;
 108
 109   int w = 255, h = 31;
 110   Pixmap p = XCreatePixmap(**display, wi->window(), w, h, _screen->depth());
 111   XImage *im = XCreateImage(**display, _screen->visual(), _screen->depth(),
 112                             ZPixmap, 0, NULL, w, h, 32, 0);
 113   //GC gc = XCreateGC(**display, _screen->rootWindow(), GCCapStyle, &gcv);
 114
 115   // XXX  + 1?
 116   unsigned char *data = new unsigned char[im->bytes_per_line * h];
 117   unsigned char *dp = data;
 118
 119   for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
 120     renderPixel(im, dp, 0);
 121   for (int y = 0; y < 10; ++y)
 122     for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
 123       renderPixel(im, dp, _red_color_table[x] << _red_offset);
 124   for (int y = 0; y < 10; ++y)
 125     for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
 126       renderPixel(im, dp, _green_color_table[x] << _green_offset);
 127   for (int y = 0; y < 10; ++y)
 128     for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
 129       renderPixel(im, dp, _blue_color_table[x] << _blue_offset);
 130
 131   printf("\nDone %d %d\n", im->bytes_per_line * h, dp - data);
 132
 133   im->data = (char*) data;
 134
 135   XPutImage(**display, p, DefaultGC(**display, _screen->screen()),
 136             im, 0, 0, 0, 0, w, h);
 137
 138   //delete [] image->data;
 139   //image->data = NULL;
 140   XDestroyImage(im);
 141
 142   XSetWindowBackgroundPixmap(**display, wi->window(), p);
 143   XClearWindow(**display, wi->window());
 144
 145   XFreePixmap(**display, p);
 146 }
 147
 148 }