8 void RrColorAllocateGC(RrColor *in)
12 gcv.foreground = in->pixel;
13 gcv.cap_style = CapProjecting;
14 in->gc = XCreateGC(RrDisplay(in->inst),
15 RrRootWindow(in->inst),
16 GCForeground | GCCapStyle, &gcv);
19 RrColor *RrColorParse(const RrInstance *inst, gchar *colorname)
23 g_assert(colorname != NULL);
24 /* get rgb values from colorname */
30 if (!XParseColor(RrDisplay(inst), RrColormap(inst), colorname, &xcol)) {
31 g_warning("unable to parse color '%s'", colorname);
34 return RrColorNew(inst, xcol.red >> 8, xcol.green >> 8, xcol.blue >> 8);
37 RrColor *RrColorNew(const RrInstance *inst, gint r, gint g, gint b)
39 /* this should be replaced with something far cooler */
42 xcol.red = (r << 8) | r;
43 xcol.green = (g << 8) | g;
44 xcol.blue = (b << 8) | b;
45 if (XAllocColor(RrDisplay(inst), RrColormap(inst), &xcol)) {
46 out = g_new(RrColor, 1);
48 out->r = xcol.red >> 8;
49 out->g = xcol.green >> 8;
50 out->b = xcol.blue >> 8;
52 out->pixel = xcol.pixel;
57 /*XXX same color could be pointed to twice, this might have to be a refcount*/
59 void RrColorFree(RrColor *c)
62 if (c->gc) XFreeGC(RrDisplay(c->inst), c->gc);
67 void RrReduceDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
71 RrPixel32 *p32 = (RrPixel32 *) im->data;
72 RrPixel16 *p16 = (RrPixel16 *) im->data;
73 unsigned char *p8 = (unsigned char *)im->data;
74 switch (im->bits_per_pixel) {
76 if ((RrRedOffset(inst) != RrDefaultRedOffset) ||
77 (RrBlueOffset(inst) != RrDefaultBlueOffset) ||
78 (RrGreenOffset(inst) != RrDefaultGreenOffset)) {
79 for (y = 0; y < im->height; y++) {
80 for (x = 0; x < im->width; x++) {
81 r = (data[x] >> RrDefaultRedOffset) & 0xFF;
82 g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
83 b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
84 p32[x] = (r << RrRedOffset(inst))
85 + (g << RrGreenOffset(inst))
86 + (b << RrBlueOffset(inst));
91 } else im->data = (char*) data;
94 for (y = 0; y < im->height; y++) {
95 for (x = 0; x < im->width; x++) {
96 r = (data[x] >> RrDefaultRedOffset) & 0xFF;
97 r = r >> RrRedShift(inst);
98 g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
99 g = g >> RrGreenShift(inst);
100 b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
101 b = b >> RrBlueShift(inst);
102 p16[x] = (r << RrRedOffset(inst))
103 + (g << RrGreenOffset(inst))
104 + (b << RrBlueOffset(inst));
107 p16 += im->bytes_per_line/2;
111 g_assert(RrVisual(inst)->class != TrueColor);
112 for (y = 0; y < im->height; y++) {
113 for (x = 0; x < im->width; x++) {
114 p8[x] = RrPickColor(inst,
115 data[x] >> RrDefaultRedOffset,
116 data[x] >> RrDefaultGreenOffset,
117 data[x] >> RrDefaultBlueOffset)->pixel;
120 p8 += im->bytes_per_line;
125 g_warning("your bit depth is currently unhandled\n");
129 XColor *RrPickColor(const RrInstance *inst, gint r, gint g, gint b)
131 r = (r & 0xff) >> (8-RrPseudoBPC(inst));
132 g = (g & 0xff) >> (8-RrPseudoBPC(inst));
133 b = (b & 0xff) >> (8-RrPseudoBPC(inst));
134 return &RrPseudoColors(inst)[(r << (2*RrPseudoBPC(inst))) +
135 (g << (1*RrPseudoBPC(inst))) +
139 static void swap_byte_order(XImage *im)
144 for (y = 0; y < im->height; ++y) {
145 for (x = 0; x < im->height; ++x) {
146 char *c = &im->data[di + x * im->bits_per_pixel / 8];
149 switch (im->bits_per_pixel) {
161 g_warning("your bit depth is currently unhandled");
164 di += im->bytes_per_line;
167 if (im->byte_order == LSBFirst)
168 im->byte_order = MSBFirst;
170 im->byte_order = LSBFirst;
173 void RrIncreaseDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
177 RrPixel32 *p32 = (RrPixel32 *) im->data;
178 RrPixel16 *p16 = (RrPixel16 *) im->data;
179 unsigned char *p8 = (unsigned char *)im->data;
181 if (im->byte_order != LSBFirst)
184 switch (im->bits_per_pixel) {
186 for (y = 0; y < im->height; y++) {
187 for (x = 0; x < im->width; x++) {
188 r = (p32[x] >> RrRedOffset(inst)) & 0xff;
189 g = (p32[x] >> RrGreenOffset(inst)) & 0xff;
190 b = (p32[x] >> RrBlueOffset(inst)) & 0xff;
191 data[x] = (r << RrDefaultRedOffset)
192 + (g << RrDefaultGreenOffset)
193 + (b << RrDefaultBlueOffset)
194 + (0xff << RrDefaultAlphaOffset);
197 p32 += im->bytes_per_line/4;
201 for (y = 0; y < im->height; y++) {
202 for (x = 0; x < im->width; x++) {
203 r = (p16[x] & RrRedMask(inst)) >>
206 g = (p16[x] & RrGreenMask(inst)) >>
207 RrGreenOffset(inst) <<
209 b = (p16[x] & RrBlueMask(inst)) >>
210 RrBlueOffset(inst) <<
212 data[x] = (r << RrDefaultRedOffset)
213 + (g << RrDefaultGreenOffset)
214 + (b << RrDefaultBlueOffset)
215 + (0xff << RrDefaultAlphaOffset);
218 p16 += im->bytes_per_line/2;
222 g_warning("this image bit depth is currently unhandled");
225 for (y = 0; y < im->height; y++) {
226 for (x = 0; x < im->width; x++) {
227 if (!(((p8[x / 8]) >> (x % 8)) & 0x1))
228 data[x] = 0xff << RrDefaultAlphaOffset; /* black */
230 data[x] = 0xffffffff; /* white */
233 p8 += im->bytes_per_line;
237 g_warning("this image bit depth is currently unhandled");
241 int RrColorRed(const RrColor *c)
246 int RrColorGreen(const RrColor *c)
251 int RrColorBlue(const RrColor *c)
256 gulong RrColorPixel(const RrColor *c)