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"
11 #include "rendertexture.hh"
16 #endif // HAVE_STDLIB_H
18 #include "../src/gettext.h"
19 #define _(str) gettext(str)
24 TrueRenderControl::TrueRenderControl(int screen)
25 : RenderControl(screen),
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");
35 unsigned long red_mask, green_mask, blue_mask;
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;
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; }
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--; }
53 TrueRenderControl::~TrueRenderControl()
55 printf("Destroying TrueColor RenderControl\n");
58 void TrueRenderControl::drawGradientBackground(
59 Surface &sf, const RenderTexture &texture) const
62 int w = sf.width(), h = sf.height(), off, x;
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()];
71 switch (texture.gradient()) {
72 case RenderTexture::Vertical:
73 verticalGradient(sf, texture, data);
75 case RenderTexture::Diagonal:
76 diagonalGradient(sf, texture, data);
78 case RenderTexture::CrossDiagonal:
79 crossDiagonalGradient(sf, texture, data);
82 printf("unhandled gradient\n");
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;
96 for (off = 0, x = 0; x < h; ++x, off++) {
97 *(data + (off * w)) = current;
98 *(data + (off * w) + w - 1) = current;
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);
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);
126 reduceDepth(im, data);
128 im->data = (char*) data;
137 void TrueRenderControl::verticalGradient(Surface &sf,
138 const RenderTexture &texture,
145 dr = (float)(texture.secondary_color().red() - texture.color().red());
146 dr/= (float)sf.height();
148 dg = (float)(texture.secondary_color().green() - texture.color().green());
149 dg/= (float)sf.height();
151 db = (float)(texture.secondary_color().blue() - texture.color().blue());
152 db/= (float)sf.height();
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)
166 void TrueRenderControl::diagonalGradient(Surface &sf,
167 const RenderTexture &texture,
171 float drx, dgx, dbx, dry, dgy, dby;
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();
180 dgx = (float)(texture.secondary_color().green() - texture.color().green());
181 dgy = dgx/(float)sf.height();
182 dgx/= (float)sf.width();
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);
199 void TrueRenderControl::crossDiagonalGradient(Surface &sf,
200 const RenderTexture &texture,
204 float drx, dgx, dbx, dry, dgy, dby;
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();
212 dgx = (float)(texture.secondary_color().green() - texture.color().green());
213 dgy = dgx/(float)sf.height();
214 dgx/= (float)sf.width();
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);
231 void TrueRenderControl::reduceDepth(XImage *im, pixel32 *data) const
233 // since pixel32 is the largest possible pixel size, we can share the array
236 pixel16 *p = (pixel16*) data;
237 switch (im->bits_per_pixel) {
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) +
256 for (y = 0; y < im->height; y++) {
257 for (x = 0; x < im->width; x++) {
258 r = (data[x] >> default_red_shift) & 0xFF;
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);
267 p += im->bytes_per_line/2;
271 printf("your bit depth is currently unhandled\n");
275 void TrueRenderControl::highlight(pixel32 *x, pixel32 *y, bool raised) const
287 r = (*up >> default_red_shift) & 0xFF;
289 g = (*up >> default_green_shift) & 0xFF;
291 b = (*up >> default_blue_shift) & 0xFF;
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);
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);
309 void TrueRenderControl::drawBackground(Surface& sf,
310 const RenderTexture &texture) const
312 assert(_screen == sf._screen);
313 assert(_screen == texture.color().screen());
315 if (texture.gradient() == RenderTexture::Solid)
316 drawSolidBackground(sf, texture);
318 drawGradientBackground(sf, texture);