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