render/color.c (raw)
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#include <X11/Xlib.h> #include <X11/Xutil.h> #include "render.h" #include "color.h" #include "../kernel/openbox.h" XColor *pseudo_colors; int pseudo_bpc; void color_allocate_gc(color_rgb *in) { XGCValues gcv; gcv.foreground = in->pixel; gcv.cap_style = CapProjecting; in->gc = XCreateGC(ob_display, ob_root, GCForeground | GCCapStyle, &gcv); } color_rgb *color_parse(char *colorname) { XColor xcol; g_assert(colorname != NULL); /* get rgb values from colorname */ xcol.red = 0; xcol.green = 0; xcol.blue = 0; xcol.pixel = 0; if (!XParseColor(ob_display, render_colormap, colorname, &xcol)) { g_warning("unable to parse color '%s'", colorname); return NULL; } return color_new(xcol.red >> 8, xcol.green >> 8, xcol.blue >> 8); } color_rgb *color_new(int r, int g, int b) { /* this should be replaced with something far cooler */ color_rgb *out; XColor xcol; xcol.red = (r << 8) | r; xcol.green = (g << 8) | g; xcol.blue = (b << 8) | b; if (XAllocColor(ob_display, render_colormap, &xcol)) { out = g_new(color_rgb, 1); out->r = xcol.red >> 8; out->g = xcol.green >> 8; out->b = xcol.blue >> 8; out->gc = None; out->pixel = xcol.pixel; return out; } return NULL; } /*XXX same color could be pointed to twice, this might have to be a refcount*/ void color_free(color_rgb *c) { if (c != NULL) { if (c->gc != None) XFreeGC(ob_display, c->gc); g_free(c); } } void reduce_depth(pixel32 *data, XImage *im) { int r, g, b; int x,y; pixel32 *p32 = (pixel32 *) im->data; pixel16 *p16 = (pixel16 *) im->data; unsigned char *p8 = (unsigned char *)im->data; switch (im->bits_per_pixel) { case 32: if ((render_red_offset != default_red_shift) || (render_blue_offset != default_blue_shift) || (render_green_offset != default_green_shift)) { for (y = 0; y < im->height; y++) { for (x = 0; x < im->width; x++) { r = (data[x] >> default_red_shift) & 0xFF; g = (data[x] >> default_green_shift) & 0xFF; b = (data[x] >> default_blue_shift) & 0xFF; p32[x] = (r << render_red_offset) + (g << render_green_offset) + (b << render_blue_offset); } data += im->width; p32 += im->width; } } else im->data = (char*) data; break; case 16: for (y = 0; y < im->height; y++) { for (x = 0; x < im->width; x++) { r = (data[x] >> default_red_shift) & 0xFF; r = r >> render_red_shift; g = (data[x] >> default_green_shift) & 0xFF; g = g >> render_green_shift; b = (data[x] >> default_blue_shift) & 0xFF; b = b >> render_blue_shift; p16[x] = (r << render_red_offset) + (g << render_green_offset) + (b << render_blue_offset); } data += im->width; p16 += im->bytes_per_line/2; } break; case 8: g_assert(render_visual->class != TrueColor); for (y = 0; y < im->height; y++) { for (x = 0; x < im->width; x++) { p8[x] = pickColor(data[x] >> default_red_shift, data[x] >> default_green_shift, data[x] >> default_blue_shift)->pixel; } data += im->width; p8 += im->bytes_per_line; } break; default: g_message("your bit depth is currently unhandled\n"); } } XColor *pickColor(int r, int g, int b) { r = (r & 0xff) >> (8-pseudo_bpc); g = (g & 0xff) >> (8-pseudo_bpc); b = (b & 0xff) >> (8-pseudo_bpc); return &pseudo_colors[(r << (2*pseudo_bpc)) + (g << (1*pseudo_bpc)) + b]; } |