+++ /dev/null
-/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
-
- color.c for the Openbox window manager
- Copyright (c) 2006 Mikael Magnusson
- Copyright (c) 2003-2007 Dana Jansens
- Copyright (c) 2003 Derek Foreman
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- See the COPYING file for a copy of the GNU General Public License.
-*/
-
-#include "render.h"
-#include "color.h"
-#include "instance.h"
-
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <string.h>
-
-void RrColorAllocateGC(RrColor *in)
-{
- XGCValues gcv;
-
- gcv.foreground = in->pixel;
- gcv.cap_style = CapProjecting;
- in->gc = XCreateGC(RrDisplay(in->inst),
- RrRootWindow(in->inst),
- GCForeground | GCCapStyle, &gcv);
-}
-
-RrColor *RrColorParse(const RrInstance *inst, gchar *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(RrDisplay(inst), RrColormap(inst), colorname, &xcol)) {
- g_message("Unable to parse color '%s'", colorname);
- return NULL;
- }
- return RrColorNew(inst, xcol.red >> 8, xcol.green >> 8, xcol.blue >> 8);
-}
-
-/*#define NO_COLOR_CACHE*/
-#ifdef DEBUG
-gint id;
-#endif
-
-RrColor *RrColorNew(const RrInstance *inst, gint r, gint g, gint b)
-{
- /* this should be replaced with something far cooler */
- RrColor *out = NULL;
- XColor xcol;
- gint key;
-
- g_assert(r >= 0 && r < 256);
- g_assert(g >= 0 && g < 256);
- g_assert(b >= 0 && b < 256);
-
- key = (r << 24) + (g << 16) + (b << 8);
-#ifndef NO_COLOR_CACHE
- if ((out = g_hash_table_lookup(RrColorHash(inst), &key))) {
- out->refcount++;
- } else {
-#endif
- xcol.red = (r << 8) | r;
- xcol.green = (g << 8) | g;
- xcol.blue = (b << 8) | b;
- if (XAllocColor(RrDisplay(inst), RrColormap(inst), &xcol)) {
- out = g_new(RrColor, 1);
- out->inst = inst;
- out->r = xcol.red >> 8;
- out->g = xcol.green >> 8;
- out->b = xcol.blue >> 8;
- out->gc = None;
- out->pixel = xcol.pixel;
- out->key = key;
- out->refcount = 1;
-#ifdef DEBUG
- out->id = id++;
-#endif
-#ifndef NO_COLOR_CACHE
- g_hash_table_insert(RrColorHash(inst), &out->key, out);
- }
-#endif
- }
- return out;
-}
-
-void RrColorFree(RrColor *c)
-{
- if (c) {
- if (--c->refcount < 1) {
-#ifndef NO_COLOR_CACHE
- g_assert(g_hash_table_lookup(RrColorHash(c->inst), &c->key));
- g_hash_table_remove(RrColorHash(c->inst), &c->key);
-#endif
- if (c->pixel) XFreeColors(RrDisplay(c->inst), RrColormap(c->inst),
- &c->pixel, 1, 0);
- if (c->gc) XFreeGC(RrDisplay(c->inst), c->gc);
- g_free(c);
- }
- }
-}
-
-void RrReduceDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
-{
- gint r, g, b;
- gint x,y;
- RrPixel32 *p32 = (RrPixel32 *) im->data;
- RrPixel16 *p16 = (RrPixel16 *) im->data;
- RrPixel8 *p8 = (RrPixel8 *) im->data;
- switch (im->bits_per_pixel) {
- case 32:
- if ((RrRedOffset(inst) != RrDefaultRedOffset) ||
- (RrBlueOffset(inst) != RrDefaultBlueOffset) ||
- (RrGreenOffset(inst) != RrDefaultGreenOffset)) {
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- r = (data[x] >> RrDefaultRedOffset) & 0xFF;
- g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
- b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
- p32[x] = (r << RrRedOffset(inst))
- + (g << RrGreenOffset(inst))
- + (b << RrBlueOffset(inst));
- }
- data += im->width;
- p32 += im->width;
- }
- } else im->data = (gchar*) data;
- break;
- case 24:
- {
- /* reverse the ordering, shifting left 16bit should be the first byte
- out of three, etc */
- const guint roff = (16 - RrRedOffset(inst)) / 8;
- const guint goff = (16 - RrGreenOffset(inst)) / 8;
- const guint boff = (16 - RrBlueOffset(inst)) / 8;
- gint outx;
- for (y = 0; y < im->height; y++) {
- for (x = 0, outx = 0; x < im->width; x++, outx += 3) {
- r = (data[x] >> RrDefaultRedOffset) & 0xFF;
- g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
- b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
- p8[outx+roff] = r;
- p8[outx+goff] = g;
- p8[outx+boff] = b;
- }
- data += im->width;
- p8 += im->bytes_per_line;
- }
- break;
- }
- case 16:
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- r = (data[x] >> RrDefaultRedOffset) & 0xFF;
- r = r >> RrRedShift(inst);
- g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
- g = g >> RrGreenShift(inst);
- b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
- b = b >> RrBlueShift(inst);
- p16[x] = (r << RrRedOffset(inst))
- + (g << RrGreenOffset(inst))
- + (b << RrBlueOffset(inst));
- }
- data += im->width;
- p16 += im->bytes_per_line/2;
- }
- break;
- case 8:
- if (RrVisual(inst)->class == TrueColor) {
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- r = (data[x] >> RrDefaultRedOffset) & 0xFF;
- r = r >> RrRedShift(inst);
- g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
- g = g >> RrGreenShift(inst);
- b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
- b = b >> RrBlueShift(inst);
- p8[x] = (r << RrRedOffset(inst))
- + (g << RrGreenOffset(inst))
- + (b << RrBlueOffset(inst));
- }
- data += im->width;
- p8 += im->bytes_per_line;
- }
- } else {
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- p8[x] = RrPickColor(inst,
- data[x] >> RrDefaultRedOffset,
- data[x] >> RrDefaultGreenOffset,
- data[x] >> RrDefaultBlueOffset)->pixel;
- }
- data += im->width;
- p8 += im->bytes_per_line;
- }
- }
- break;
- default:
- g_error("This image bit depth (%i) is currently unhandled", im->bits_per_pixel);
-
- }
-}
-
-XColor *RrPickColor(const RrInstance *inst, gint r, gint g, gint b)
-{
- r = (r & 0xff) >> (8-RrPseudoBPC(inst));
- g = (g & 0xff) >> (8-RrPseudoBPC(inst));
- b = (b & 0xff) >> (8-RrPseudoBPC(inst));
- return &RrPseudoColors(inst)[(r << (2*RrPseudoBPC(inst))) +
- (g << (1*RrPseudoBPC(inst))) +
- b];
-}
-
-static void swap_byte_order(XImage *im)
-{
- gint x, y, di;
-
- di = 0;
- for (y = 0; y < im->height; ++y) {
- for (x = 0; x < im->height; ++x) {
- gchar *c = &im->data[di + x * im->bits_per_pixel / 8];
- gchar t;
-
- switch (im->bits_per_pixel) {
- case 32:
- t = c[2];
- c[2] = c[3];
- c[3] = t;
- case 16:
- t = c[0];
- c[0] = c[1];
- c[1] = t;
- case 8:
- case 1:
- break;
- default:
- g_error("Your bit depth (%i) is currently unhandled",
- im->bits_per_pixel);
- }
- }
- di += im->bytes_per_line;
- }
-
- if (im->byte_order == LSBFirst)
- im->byte_order = MSBFirst;
- else
- im->byte_order = LSBFirst;
-}
-
-void RrIncreaseDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
-{
- gint r, g, b;
- gint x,y;
- RrPixel32 *p32 = (RrPixel32 *) im->data;
- RrPixel16 *p16 = (RrPixel16 *) im->data;
- guchar *p8 = (guchar *)im->data;
-
- if (im->byte_order != LSBFirst)
- swap_byte_order(im);
-
- switch (im->bits_per_pixel) {
- case 32:
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- r = (p32[x] >> RrRedOffset(inst)) & 0xff;
- g = (p32[x] >> RrGreenOffset(inst)) & 0xff;
- b = (p32[x] >> RrBlueOffset(inst)) & 0xff;
- data[x] = (r << RrDefaultRedOffset)
- + (g << RrDefaultGreenOffset)
- + (b << RrDefaultBlueOffset)
- + (0xff << RrDefaultAlphaOffset);
- }
- data += im->width;
- p32 += im->bytes_per_line/4;
- }
- break;
- case 16:
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- r = (p16[x] & RrRedMask(inst)) >>
- RrRedOffset(inst) <<
- RrRedShift(inst);
- g = (p16[x] & RrGreenMask(inst)) >>
- RrGreenOffset(inst) <<
- RrGreenShift(inst);
- b = (p16[x] & RrBlueMask(inst)) >>
- RrBlueOffset(inst) <<
- RrBlueShift(inst);
- data[x] = (r << RrDefaultRedOffset)
- + (g << RrDefaultGreenOffset)
- + (b << RrDefaultBlueOffset)
- + (0xff << RrDefaultAlphaOffset);
- }
- data += im->width;
- p16 += im->bytes_per_line/2;
- }
- break;
- case 8:
- g_error("This image bit depth (%i) is currently unhandled", 8);
- break;
- case 1:
- for (y = 0; y < im->height; y++) {
- for (x = 0; x < im->width; x++) {
- if (!(((p8[x / 8]) >> (x % 8)) & 0x1))
- data[x] = 0xff << RrDefaultAlphaOffset; /* black */
- else
- data[x] = 0xffffffff; /* white */
- }
- data += im->width;
- p8 += im->bytes_per_line;
- }
- break;
- default:
- g_error("This image bit depth (%i) is currently unhandled",
- im->bits_per_pixel);
- }
-}
-
-gint RrColorRed(const RrColor *c)
-{
- return c->r;
-}
-
-gint RrColorGreen(const RrColor *c)
-{
- return c->g;
-}
-
-gint RrColorBlue(const RrColor *c)
-{
- return c->b;
-}
-
-gulong RrColorPixel(const RrColor *c)
-{
- return c->pixel;
-}
-
-GC RrColorGC(RrColor *c)
-{
- if (!c->gc)
- RrColorAllocateGC(c);
- return c->gc;
-}