1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
4 # include "../config.h"
5 #endif // HAVE_CONFIG_H
7 #include "truerendercontrol.hh"
9 #include "screeninfo.hh"
14 #endif // HAVE_STDLIB_H
17 #define _(str) gettext(str)
22 TrueRenderControl::TrueRenderControl(const ScreenInfo *screen)
23 : RenderControl(screen)
25 printf("Initializing TrueColor RenderControl\n");
27 unsigned long red_mask, green_mask, blue_mask;
29 // find the offsets for each color in the visual's masks
30 red_mask = screen->visual()->red_mask;
31 green_mask = screen->visual()->green_mask;
32 blue_mask = screen->visual()->blue_mask;
34 while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
35 while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
36 while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
38 // use the mask to determine the number of bits for each shade of color
39 // so, best case, red_mask == 0xff (255), with each bit as a different
41 _red_bits = 255 / red_mask;
42 _green_bits = 255 / green_mask;
43 _blue_bits = 255 / blue_mask;
45 // compute color tables, based on the number of bits for each shade
46 for (int i = 0; i < 256; i++) {
47 _red_color_table[i] = i / _red_bits;
48 _green_color_table[i] = i / _green_bits;
49 _blue_color_table[i] = i / _blue_bits;
53 TrueRenderControl::~TrueRenderControl()
55 printf("Destroying TrueColor RenderControl\n");
60 void TrueRenderControl::render(::Drawable d)
63 gcv.cap_style = CapProjecting;
66 Pixmap p = XCreatePixmap(**display, d, w, h, _screen->depth());
67 XImage *im = XCreateImage(**display, _screen->visual(), _screen->depth(),
68 ZPixmap, 0, NULL, w, h, 32, 0);
69 //GC gc = XCreateGC(**display, _screen->rootWindow(), GCCapStyle, &gcv);
71 im->data = new char[im->bytes_per_line * (h + 1)]; // XXX + 1?
74 for (int x = 0; x < w; ++x, ++dp)
76 for (int y = 0; y < 10; ++h)
77 for (int x = 0; x < w; ++x, ++dp)
78 *dp = _red_color_table[x] << _red_offset;
79 for (int y = 0; y < 10; ++h)
80 for (int x = 0; x < w; ++x, ++dp)
81 *dp = _green_color_table[x] << _green_offset;
82 for (int y = 0; y < 10; ++h)
83 for (int x = 0; x < w; ++x, ++dp)
84 *dp = _blue_color_table[x] << _blue_offset;
85 for (int x = 0; x < w; ++x, ++dp)
88 XPutImage(**display, p, DefaultGC(**display, _screen->screen()),
89 im, 0, 0, 0, 0, w, h);
91 //delete [] image->data;
95 XCopyArea(**display, p, d, DefaultGC(**display, _screen->screen()),
98 XFreePixmap(**display, p);