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"
15 #endif // HAVE_STDLIB_H
18 #define _(str) gettext(str)
23 TrueRenderControl::TrueRenderControl(const ScreenInfo *screen)
24 : RenderControl(screen)
26 printf("Initializing TrueColor RenderControl\n");
28 unsigned long red_mask, green_mask, blue_mask;
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;
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; }
39 // use the mask to determine the number of bits for each shade of color
40 // so, best case, red_mask == 0xff (255), with each bit as a different
42 _red_bits = 255 / red_mask;
43 _green_bits = 255 / green_mask;
44 _blue_bits = 255 / blue_mask;
46 // compute color tables, based on the number of bits for each shade
47 for (int i = 0; i < 256; i++) {
48 _red_color_table[i] = i / _red_bits;
49 _green_color_table[i] = i / _green_bits;
50 _blue_color_table[i] = i / _blue_bits;
54 TrueRenderControl::~TrueRenderControl()
56 printf("Destroying TrueColor RenderControl\n");
62 void assignPixel(unsigned int bit_depth, unsigned char **data, unsigned long pixel) {
63 unsigned char *pixel_data = *data;
66 *pixel_data++ = pixel;
70 *pixel_data++ = pixel;
71 *pixel_data++ = pixel >> 8;
75 *pixel_data++ = pixel >> 8;
76 *pixel_data++ = pixel;
80 *pixel_data++ = pixel;
81 *pixel_data++ = pixel >> 8;
82 *pixel_data++ = pixel >> 16;
86 *pixel_data++ = pixel >> 16;
87 *pixel_data++ = pixel >> 8;
88 *pixel_data++ = pixel;
92 *pixel_data++ = pixel;
93 *pixel_data++ = pixel >> 8;
94 *pixel_data++ = pixel >> 16;
95 *pixel_data++ = pixel >> 24;
99 *pixel_data++ = pixel >> 24;
100 *pixel_data++ = pixel >> 16;
101 *pixel_data++ = pixel >> 8;
102 *pixel_data++ = pixel;
105 *data = pixel_data; // assign back so we don't lose our place
108 void renderPixel(XImage *im, unsigned char *dp, unsigned long pixel)
110 unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst) ? 1 : 0;
116 case 16: // 16bpp LSB
120 case 17: // 16bpp MSB
124 case 24: // 24bpp LSB
129 case 25: // 24bpp MSB
134 case 32: // 32bpp LSB
140 case 33: // 32bpp MSB
149 void TrueRenderControl::render(Widget *wi)
154 gcv.cap_style = CapProjecting;
157 Pixmap p = XCreatePixmap(**display, wi->window(), w, h, _screen->depth());
158 XImage *im = XCreateImage(**display, _screen->visual(), _screen->depth(),
159 ZPixmap, 0, NULL, w, h, 32, 0);
160 //GC gc = XCreateGC(**display, _screen->rootWindow(), GCCapStyle, &gcv);
163 unsigned char *data = new unsigned char[im->bytes_per_line * (h + 1)];
164 unsigned char *dp = data;
166 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
167 renderPixel(im, dp, 0);
168 for (int y = 0; y < 10; ++y)
169 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
170 renderPixel(im, dp, _red_color_table[x] << _red_offset);
171 for (int y = 0; y < 10; ++y)
172 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
173 renderPixel(im, dp, _green_color_table[x] << _green_offset);
174 for (int y = 0; y < 10; ++y)
175 for (int x = 0; x < w; ++x, dp += im->bits_per_pixel/8)
176 renderPixel(im, dp, _blue_color_table[x] << _blue_offset);
180 im->data = (char*) data;
182 XPutImage(**display, p, DefaultGC(**display, _screen->screen()),
183 im, 0, 0, 0, 0, w, h);
185 //delete [] image->data;
186 //image->data = NULL;
189 XSetWindowBackgroundPixmap(**display, wi->window(), p);
190 XClearWindow(**display, wi->window());
192 XFreePixmap(**display, p);