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Sweden-Number/graphics/x11drv/palette.c

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/*
* X11DRV OEM bitmap objects
*
* Copyright 1994, 1995 Alexandre Julliard
*
*/
#include "config.h"
#include "ts_xlib.h"
#include <stdlib.h>
#include <string.h>
#include "color.h"
#include "debugtools.h"
#include "gdi.h"
#include "palette.h"
#include "windef.h"
#include "winreg.h"
#include "x11drv.h"
DEFAULT_DEBUG_CHANNEL(palette);
/* Palette indexed mode:
* logical palette -> mapping -> pixel
*
*
* Windows needs contiguous color space ( from 0 to n ) but
* it is possible only with the private colormap. Otherwise we
* have to map DC palette indices to real pixel values. With
* private colormaps it boils down to the identity mapping. The
* other special case is when we have a fixed color visual with
* the screendepth > 8 - we abandon palette mappings altogether
* because pixel values can be calculated without X server
* assistance.
*
* Windows palette manager is described in the
* http://premium.microsoft.com/msdn/library/techart/f30/f34/f40/d4d/sa942.htm
*/
extern PALETTEENTRY *COLOR_sysPal;
extern int COLOR_gapStart;
extern int COLOR_gapEnd;
extern int COLOR_gapFilled;
extern int COLOR_max;
extern const PALETTEENTRY COLOR_sysPalTemplate[NB_RESERVED_COLORS];
Colormap X11DRV_PALETTE_PaletteXColormap = 0;
UINT16 X11DRV_PALETTE_PaletteFlags = 0;
static int X11DRV_PALETTE_Redshift = 0; /* to handle abortive X11DRV_PALETTE_VIRTUAL visuals */
static int X11DRV_PALETTE_Redscale = 0;
static int X11DRV_PALETTE_Redmax = 0;
static int X11DRV_PALETTE_Greenshift = 0;
static int X11DRV_PALETTE_Greenscale = 0;
static int X11DRV_PALETTE_Greenmax = 0;
static int X11DRV_PALETTE_Blueshift = 0;
static int X11DRV_PALETTE_Bluescale = 0;
static int X11DRV_PALETTE_Bluemax = 0;
static int X11DRV_PALETTE_Graymax = 0;
static int palette_size;
/* First free dynamic color cell, 0 = full palette, -1 = fixed palette */
static int X11DRV_PALETTE_firstFree = 0;
static unsigned char X11DRV_PALETTE_freeList[256];
/**********************************************************************/
/* Map an EGA index (0..15) to a pixel value in the system color space. */
int X11DRV_PALETTE_mapEGAPixel[16];
/**********************************************************************/
#define NB_COLORCUBE_START_INDEX 63
/* Maps entry in the system palette to X pixel value */
int *X11DRV_PALETTE_PaletteToXPixel = NULL;
/* Maps pixel to the entry in the system palette */
int *X11DRV_PALETTE_XPixelToPalette = NULL;
/**********************************************************************/
static BOOL X11DRV_PALETTE_BuildPrivateMap(void);
static BOOL X11DRV_PALETTE_BuildSharedMap(void);
static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, int *shift, int *max, int *scale);
static void X11DRV_PALETTE_FillDefaultColors(void);
static void X11DRV_PALETTE_FormatSystemPalette(void);
static BOOL X11DRV_PALETTE_CheckSysColor(COLORREF c);
static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col);
/***********************************************************************
* COLOR_Init
*
* Initialize color management.
*/
int X11DRV_PALETTE_Init(void)
{
int mask, white, black;
int monoPlane;
TRACE("initializing palette manager...\n");
white = WhitePixel( gdi_display, DefaultScreen(gdi_display) );
black = BlackPixel( gdi_display, DefaultScreen(gdi_display) );
monoPlane = 1;
for( mask = 1; !((white & mask)^(black & mask)); mask <<= 1 )
monoPlane++;
X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
palette_size = visual->map_entries;
switch(visual->class)
{
case DirectColor:
X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
case GrayScale:
case PseudoColor:
{
HKEY hkey;
BOOL private_color_map = FALSE;
if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\x11drv", &hkey))
{
char buffer[20];
DWORD type, count = sizeof(buffer);
if(!RegQueryValueExA(hkey, "PrivateColorMap", 0, &type, buffer, &count))
{
char ch = buffer[0];
private_color_map = (ch == 'y' || ch == 'Y' || ch == 't' || ch == 'T' || ch == '1');
}
RegCloseKey(hkey);
}
if (private_color_map)
{
XSetWindowAttributes win_attr;
X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap( gdi_display, root_window,
visual, AllocAll );
if (X11DRV_PALETTE_PaletteXColormap)
{
X11DRV_PALETTE_PaletteFlags |= (X11DRV_PALETTE_PRIVATE | X11DRV_PALETTE_WHITESET);
monoPlane = 1;
for( white = palette_size - 1; !(white & 1); white >>= 1 )
monoPlane++;
if( root_window != DefaultRootWindow(gdi_display) )
{
win_attr.colormap = X11DRV_PALETTE_PaletteXColormap;
TSXChangeWindowAttributes( gdi_display, root_window, CWColormap, &win_attr );
}
break;
}
}
X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap(gdi_display, root_window,
visual, AllocNone);
break;
}
case StaticGray:
X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap(gdi_display, root_window,
visual, AllocNone);
X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
X11DRV_PALETTE_Graymax = (1 << screen_depth)-1;
break;
case TrueColor:
X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_VIRTUAL;
case StaticColor: {
int *depths,nrofdepths;
/* FIXME: hack to detect XFree32 XF_VGA16 ... We just have
* depths 1 and 4
*/
depths=TSXListDepths(gdi_display,DefaultScreen(gdi_display),&nrofdepths);
if ((nrofdepths==2) && ((depths[0]==4) || depths[1]==4)) {
monoPlane = 1;
for( white = palette_size - 1; !(white & 1); white >>= 1 )
monoPlane++;
X11DRV_PALETTE_PaletteFlags = (white & mask) ? X11DRV_PALETTE_WHITESET : 0;
X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap(gdi_display, root_window,
visual, AllocNone);
TSXFree(depths);
break;
}
TSXFree(depths);
X11DRV_PALETTE_PaletteXColormap = TSXCreateColormap(gdi_display, root_window,
visual, AllocNone);
X11DRV_PALETTE_PaletteFlags |= X11DRV_PALETTE_FIXED;
X11DRV_PALETTE_ComputeShifts(visual->red_mask, &X11DRV_PALETTE_Redshift, &X11DRV_PALETTE_Redmax, &X11DRV_PALETTE_Redscale);
X11DRV_PALETTE_ComputeShifts(visual->green_mask, &X11DRV_PALETTE_Greenshift, &X11DRV_PALETTE_Greenmax, &X11DRV_PALETTE_Greenscale);
X11DRV_PALETTE_ComputeShifts(visual->blue_mask, &X11DRV_PALETTE_Blueshift, &X11DRV_PALETTE_Bluemax, &X11DRV_PALETTE_Bluescale);
break;
}
}
TRACE(" visual class %i (%i)\n", visual->class, monoPlane);
memset(X11DRV_PALETTE_freeList, 0, 256*sizeof(unsigned char));
if (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_PRIVATE)
X11DRV_PALETTE_BuildPrivateMap();
else
X11DRV_PALETTE_BuildSharedMap();
/* Build free list */
if( X11DRV_PALETTE_firstFree != -1 )
X11DRV_PALETTE_FormatSystemPalette();
X11DRV_PALETTE_FillDefaultColors();
if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
palette_size = 0;
else
palette_size = visual->map_entries;
return palette_size;
}
/***********************************************************************
* X11DRV_PALETTE_Cleanup
*
* Free external colors we grabbed in the FillDefaultPalette()
*/
void X11DRV_PALETTE_Cleanup(void)
{
if( COLOR_gapFilled )
TSXFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap,
(unsigned long*)(X11DRV_PALETTE_PaletteToXPixel + COLOR_gapStart),
COLOR_gapFilled, 0);
}
/***********************************************************************
* X11DRV_PALETTE_ComputeShifts
*
* Calculate conversion parameters for direct mapped visuals
*/
static void X11DRV_PALETTE_ComputeShifts(unsigned long maskbits, int *shift, int *max, int *scale)
{
int i;
if (maskbits==0)
{
*shift=0;
*max=0;
return;
}
for(i=0;!(maskbits&1);i++)
maskbits >>= 1;
*shift = i;
*max = maskbits;
for(i=0;maskbits!=0;i++)
maskbits >>= 1;
*scale = i;
}
/***********************************************************************
* X11DRV_PALETTE_BuildPrivateMap
*
* Allocate colorcells and initialize mapping tables.
*/
static BOOL X11DRV_PALETTE_BuildPrivateMap(void)
{
/* Private colormap - identity mapping */
XColor color;
int i;
if((COLOR_sysPal = (PALETTEENTRY*)HeapAlloc(GetProcessHeap(), 0, sizeof(PALETTEENTRY)*palette_size)) == NULL) {
WARN("Can not allocate system palette\n");
return FALSE;
}
TRACE("Building private map - %i palette entries\n", palette_size);
/* Allocate system palette colors */
for( i=0; i < palette_size; i++ )
{
if( i < NB_RESERVED_COLORS/2 )
{
color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
COLOR_sysPal[i] = COLOR_sysPalTemplate[i];
}
else if( i >= palette_size - NB_RESERVED_COLORS/2 )
{
int j = NB_RESERVED_COLORS + i - palette_size;
color.red = COLOR_sysPalTemplate[j].peRed * 65535 / 255;
color.green = COLOR_sysPalTemplate[j].peGreen * 65535 / 255;
color.blue = COLOR_sysPalTemplate[j].peBlue * 65535 / 255;
COLOR_sysPal[i] = COLOR_sysPalTemplate[j];
}
color.flags = DoRed | DoGreen | DoBlue;
color.pixel = i;
TSXStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
/* Set EGA mapping if color is from the first or last eight */
if (i < 8)
X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
else if (i >= palette_size - 8 )
X11DRV_PALETTE_mapEGAPixel[i - (palette_size - 16)] = color.pixel;
}
X11DRV_PALETTE_XPixelToPalette = X11DRV_PALETTE_PaletteToXPixel = NULL;
COLOR_gapStart = 256; COLOR_gapEnd = -1;
X11DRV_PALETTE_firstFree = (palette_size > NB_RESERVED_COLORS)?NB_RESERVED_COLORS/2 : -1;
return FALSE;
}
/***********************************************************************
* X11DRV_PALETTE_BuildSharedMap
*
* Allocate colorcells and initialize mapping tables.
*/
static BOOL X11DRV_PALETTE_BuildSharedMap(void)
{
XColor color;
unsigned long sysPixel[NB_RESERVED_COLORS];
unsigned long* pixDynMapping = NULL;
unsigned long plane_masks[1];
int i, j, warn = 0;
int diff, r, g, b, max = 256, bp = 0, wp = 1;
int step = 1;
int defaultCM_max_copy;
Colormap defaultCM;
XColor defaultColors[256];
HKEY hkey;
defaultCM_max_copy = 128;
COLOR_max = 256;
if(!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config\\x11drv", &hkey))
{
char buffer[20];
DWORD type, count;
count = sizeof(buffer);
if(!RegQueryValueExA(hkey, "CopyDefaultColors", 0, &type, buffer, &count))
defaultCM_max_copy = atoi(buffer);
count = sizeof(buffer);
if(!RegQueryValueExA(hkey, "AllocSystemColors", 0, &type, buffer, &count))
COLOR_max = atoi(buffer);
RegCloseKey(hkey);
}
/* Copy the first bunch of colors out of the default colormap to prevent
* colormap flashing as much as possible. We're likely to get the most
* important Window Manager colors, etc in the first 128 colors */
defaultCM = DefaultColormap( gdi_display, DefaultScreen(gdi_display) );
for (i = 0; i < defaultCM_max_copy; i++)
defaultColors[i].pixel = (long) i;
TSXQueryColors(gdi_display, defaultCM, &defaultColors[0], defaultCM_max_copy);
for (i = 0; i < defaultCM_max_copy; i++)
TSXAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &defaultColors[i] );
if (COLOR_max > 256) COLOR_max = 256;
else if (COLOR_max < 20) COLOR_max = 20;
TRACE("%d colors configured.\n", COLOR_max);
TRACE("Building shared map - %i palette entries\n", palette_size);
/* Be nice and allocate system colors as read-only */
for( i = 0; i < NB_RESERVED_COLORS; i++ )
{
color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
color.flags = DoRed | DoGreen | DoBlue;
if (!TSXAllocColor( gdi_display, X11DRV_PALETTE_PaletteXColormap, &color ))
{
XColor best, c;
if( !warn++ )
{
WARN("Not enough colors for the full system palette.\n");
bp = BlackPixel(gdi_display, DefaultScreen(gdi_display));
wp = WhitePixel(gdi_display, DefaultScreen(gdi_display));
max = (0xffffffff)>>(32 - screen_depth);
if( max > 256 )
{
step = max/256;
max = 256;
}
}
/* reinit color (XAllocColor() may change it)
* and map to the best shared colorcell */
color.red = COLOR_sysPalTemplate[i].peRed * 65535 / 255;
color.green = COLOR_sysPalTemplate[i].peGreen * 65535 / 255;
color.blue = COLOR_sysPalTemplate[i].peBlue * 65535 / 255;
best.pixel = best.red = best.green = best.blue = 0;
for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
{
TSXQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &c);
r = (c.red - color.red)>>8;
g = (c.green - color.green)>>8;
b = (c.blue - color.blue)>>8;
r = r*r + g*g + b*b;
if( r < diff ) { best = c; diff = r; }
}
if( TSXAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &best) )
color.pixel = best.pixel;
else color.pixel = (i < NB_RESERVED_COLORS/2)? bp : wp;
}
sysPixel[i] = color.pixel;
TRACE("syscolor(%lx) -> pixel %i\n",
*(COLORREF*)(COLOR_sysPalTemplate+i), (int)color.pixel);
/* Set EGA mapping if color in the first or last eight */
if (i < 8)
X11DRV_PALETTE_mapEGAPixel[i] = color.pixel;
else if (i >= NB_RESERVED_COLORS - 8 )
X11DRV_PALETTE_mapEGAPixel[i - (NB_RESERVED_COLORS-16)] = color.pixel;
}
/* now allocate changeable set */
if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
{
int c_min = 0, c_max = palette_size, c_val;
TRACE("Dynamic colormap... \n");
/* let's become the first client that actually follows
* X guidelines and does binary search...
*/
if((pixDynMapping = (unsigned long*)HeapAlloc(GetProcessHeap(), 0, sizeof(long)*palette_size)) == NULL) {
WARN("Out of memory while building system palette.\n");
return FALSE;
}
/* comment this out if you want to debug palette init */
TSXGrabServer(gdi_display);
while( c_max - c_min > 0 )
{
c_val = (c_max + c_min)/2 + (c_max + c_min)%2;
if( !TSXAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
plane_masks, 0, pixDynMapping, c_val) )
c_max = c_val - 1;
else
{
TSXFreeColors(gdi_display, X11DRV_PALETTE_PaletteXColormap, pixDynMapping, c_val, 0);
c_min = c_val;
}
}
if( c_min > COLOR_max - NB_RESERVED_COLORS)
c_min = COLOR_max - NB_RESERVED_COLORS;
c_min = (c_min/2) + (c_min/2); /* need even set for split palette */
if( c_min > 0 )
if( !TSXAllocColorCells(gdi_display, X11DRV_PALETTE_PaletteXColormap, False,
plane_masks, 0, pixDynMapping, c_min) )
{
WARN("Inexplicable failure during colorcell allocation.\n");
c_min = 0;
}
palette_size = c_min + NB_RESERVED_COLORS;
TSXUngrabServer(gdi_display);
TRACE("adjusted size %i colorcells\n", palette_size);
}
else if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
{
/* virtual colorspace - ToPhysical takes care of
* color translations but we have to allocate full palette
* to maintain compatibility
*/
palette_size = 256;
TRACE("Virtual colorspace - screendepth %i\n", screen_depth);
}
else palette_size = NB_RESERVED_COLORS; /* system palette only - however we can alloc a bunch
* of colors and map to them */
TRACE("Shared system palette uses %i colors.\n", palette_size);
/* set gap to account for pixel shortage. It has to be right in the center
* of the system palette because otherwise raster ops get screwed. */
if( palette_size >= 256 )
{ COLOR_gapStart = 256; COLOR_gapEnd = -1; }
else
{ COLOR_gapStart = palette_size/2; COLOR_gapEnd = 255 - palette_size/2; }
X11DRV_PALETTE_firstFree = ( palette_size > NB_RESERVED_COLORS &&
(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL || !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED)) )
? NB_RESERVED_COLORS/2 : -1;
COLOR_sysPal = (PALETTEENTRY*)HeapAlloc(GetProcessHeap(),0,sizeof(PALETTEENTRY)*256);
if(COLOR_sysPal == NULL) {
ERR("Can not allocate system palette!\n");
return FALSE;
}
/* setup system palette entry <-> pixel mappings and fill in 20 fixed entries */
if (screen_depth <= 8)
{
X11DRV_PALETTE_XPixelToPalette = (int*)calloc(256, sizeof(int));
if(X11DRV_PALETTE_XPixelToPalette == NULL) {
ERR("Out of memory: XPixelToPalette!\n");
return FALSE;
}
}
/* for hicolor visuals PaletteToPixel mapping is used to skip
* RGB->pixel calculation in X11DRV_PALETTE_ToPhysical().
*/
X11DRV_PALETTE_PaletteToXPixel = (int*)HeapAlloc(GetProcessHeap(),0,sizeof(int)*256);
if(X11DRV_PALETTE_PaletteToXPixel == NULL) {
ERR("Out of memory: PaletteToXPixel!\n");
return FALSE;
}
for( i = j = 0; i < 256; i++ )
{
if( i >= COLOR_gapStart && i <= COLOR_gapEnd )
{
X11DRV_PALETTE_PaletteToXPixel[i] = 0;
COLOR_sysPal[i].peFlags = 0; /* mark as unused */
continue;
}
if( i < NB_RESERVED_COLORS/2 )
{
X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[i];
COLOR_sysPal[i] = COLOR_sysPalTemplate[i];
}
else if( i >= 256 - NB_RESERVED_COLORS/2 )
{
X11DRV_PALETTE_PaletteToXPixel[i] = sysPixel[(i + NB_RESERVED_COLORS) - 256];
COLOR_sysPal[i] = COLOR_sysPalTemplate[(i + NB_RESERVED_COLORS) - 256];
}
else if( pixDynMapping )
X11DRV_PALETTE_PaletteToXPixel[i] = pixDynMapping[j++];
else
X11DRV_PALETTE_PaletteToXPixel[i] = i;
TRACE("index %i -> pixel %i\n", i, X11DRV_PALETTE_PaletteToXPixel[i]);
if( X11DRV_PALETTE_XPixelToPalette )
X11DRV_PALETTE_XPixelToPalette[X11DRV_PALETTE_PaletteToXPixel[i]] = i;
}
if( pixDynMapping ) HeapFree(GetProcessHeap(), 0, pixDynMapping);
return TRUE;
}
/***********************************************************************
* Colormap Initialization
*/
static void X11DRV_PALETTE_FillDefaultColors(void)
{
/* initialize unused entries to what Windows uses as a color
* cube - based on Greg Kreider's code.
*/
int i = 0, idx = 0;
int red, no_r, inc_r;
int green, no_g, inc_g;
int blue, no_b, inc_b;
if (palette_size <= NB_RESERVED_COLORS)
return;
while (i*i*i < (palette_size - NB_RESERVED_COLORS)) i++;
no_r = no_g = no_b = --i;
if ((no_r * (no_g+1) * no_b) < (palette_size - NB_RESERVED_COLORS)) no_g++;
if ((no_r * no_g * (no_b+1)) < (palette_size - NB_RESERVED_COLORS)) no_b++;
inc_r = (255 - NB_COLORCUBE_START_INDEX)/no_r;
inc_g = (255 - NB_COLORCUBE_START_INDEX)/no_g;
inc_b = (255 - NB_COLORCUBE_START_INDEX)/no_b;
idx = X11DRV_PALETTE_firstFree;
if( idx != -1 )
for (blue = NB_COLORCUBE_START_INDEX; blue < 256 && idx; blue += inc_b )
for (green = NB_COLORCUBE_START_INDEX; green < 256 && idx; green += inc_g )
for (red = NB_COLORCUBE_START_INDEX; red < 256 && idx; red += inc_r )
{
/* weird but true */
if( red == NB_COLORCUBE_START_INDEX && green == red && blue == green ) continue;
COLOR_sysPal[idx].peRed = red;
COLOR_sysPal[idx].peGreen = green;
COLOR_sysPal[idx].peBlue = blue;
/* set X color */
if( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
{
if (X11DRV_PALETTE_Redmax != 255) no_r = (red * X11DRV_PALETTE_Redmax) / 255;
if (X11DRV_PALETTE_Greenmax != 255) no_g = (green * X11DRV_PALETTE_Greenmax) / 255;
if (X11DRV_PALETTE_Bluemax != 255) no_b = (blue * X11DRV_PALETTE_Bluemax) / 255;
X11DRV_PALETTE_PaletteToXPixel[idx] = (no_r << X11DRV_PALETTE_Redshift) | (no_g << X11DRV_PALETTE_Greenshift) | (no_b << X11DRV_PALETTE_Blueshift);
}
else if( !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
{
XColor color;
color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
color.red = COLOR_sysPal[idx].peRed << 8;
color.green = COLOR_sysPal[idx].peGreen << 8;
color.blue = COLOR_sysPal[idx].peBlue << 8;
color.flags = DoRed | DoGreen | DoBlue;
TSXStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
}
idx = X11DRV_PALETTE_freeList[idx];
}
/* try to fill some entries in the "gap" with
* what's already in the colormap - they will be
* mappable to but not changeable. */
if( COLOR_gapStart < COLOR_gapEnd && X11DRV_PALETTE_XPixelToPalette )
{
XColor xc;
int r, g, b, max;
max = COLOR_max - (256 - (COLOR_gapEnd - COLOR_gapStart));
for ( i = 0, idx = COLOR_gapStart; i < 256 && idx <= COLOR_gapEnd; i++ )
if( X11DRV_PALETTE_XPixelToPalette[i] == 0 )
{
xc.pixel = i;
TSXQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc);
r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor(RGB(r, g, b)) &&
TSXAllocColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &xc) )
{
X11DRV_PALETTE_XPixelToPalette[xc.pixel] = idx;
X11DRV_PALETTE_PaletteToXPixel[idx] = xc.pixel;
*(COLORREF*)(COLOR_sysPal + idx) = RGB(r, g, b);
COLOR_sysPal[idx++].peFlags |= PC_SYS_USED;
if( --max <= 0 ) break;
}
}
COLOR_gapFilled = idx - COLOR_gapStart;
}
}
/***********************************************************************
* X11DRV_PALETTE_ToLogical
*
* Return RGB color for given X pixel.
*/
COLORREF X11DRV_PALETTE_ToLogical(int pixel)
{
XColor color;
#if 0
/* truecolor visual */
if (screen_depth >= 24) return pixel;
#endif
/* check for hicolor visuals first */
if ( (X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) && !X11DRV_PALETTE_Graymax )
{
color.red = (pixel >> X11DRV_PALETTE_Redshift) & X11DRV_PALETTE_Redmax;
color.green = (pixel >> X11DRV_PALETTE_Greenshift) & X11DRV_PALETTE_Greenmax;
color.blue = (pixel >> X11DRV_PALETTE_Blueshift) & X11DRV_PALETTE_Bluemax;
return RGB(color.red << (8-X11DRV_PALETTE_Redscale) |
color.red >> (2*X11DRV_PALETTE_Redscale-8),
color.green << (8-X11DRV_PALETTE_Greenscale) |
color.green >> (2*X11DRV_PALETTE_Greenscale-8),
color.blue << (8-X11DRV_PALETTE_Bluescale) |
color.blue >> (2*X11DRV_PALETTE_Bluescale-8));
}
/* check if we can bypass X */
if ((screen_depth <= 8) && (pixel < 256) &&
!(X11DRV_PALETTE_PaletteFlags & (X11DRV_PALETTE_VIRTUAL | X11DRV_PALETTE_FIXED)) ) {
return ( *(COLORREF*)(COLOR_sysPal +
((X11DRV_PALETTE_XPixelToPalette)?X11DRV_PALETTE_XPixelToPalette[pixel]:pixel)) ) & 0x00ffffff;
}
color.pixel = pixel;
TSXQueryColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
}
/***********************************************************************
* X11DRV_PALETTE_ToPhysical
*
* Return the physical color closest to 'color'.
*/
int X11DRV_PALETTE_ToPhysical( DC *dc, COLORREF color )
{
WORD index = 0;
HPALETTE16 hPal = (dc)? dc->hPalette: GetStockObject(DEFAULT_PALETTE);
unsigned char spec_type = color >> 24;
PALETTEOBJ* palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
/* palPtr can be NULL when DC is being destroyed */
if( !palPtr ) return 0;
if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED )
{
/* there is no colormap limitation; we are going to have to compute
* the pixel value from the visual information stored earlier
*/
unsigned long red, green, blue;
unsigned idx = 0;
switch(spec_type)
{
case 1: /* PALETTEINDEX */
if( (idx = color & 0xffff) >= palPtr->logpalette.palNumEntries)
{
WARN("RGB(%lx) : idx %d is out of bounds, assuming black\n", color, idx);
GDI_ReleaseObj( hPal );
return 0;
}
if( palPtr->mapping )
{
int ret = palPtr->mapping[idx];
GDI_ReleaseObj( hPal );
return ret;
}
color = *(COLORREF*)(palPtr->logpalette.palPalEntry + idx);
break;
default:
color &= 0xffffff;
/* fall through to RGB */
case 0: /* RGB */
if( dc && (dc->bitsPerPixel == 1) )
{
GDI_ReleaseObj( hPal );
return (((color >> 16) & 0xff) +
((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
}
}
red = GetRValue(color); green = GetGValue(color); blue = GetBValue(color);
if (X11DRV_PALETTE_Graymax)
{
/* grayscale only; return scaled value */
GDI_ReleaseObj( hPal );
return ( (red * 30 + green * 59 + blue * 11) * X11DRV_PALETTE_Graymax) / 25500;
}
else
{
/* scale each individually and construct the TrueColor pixel value */
if (X11DRV_PALETTE_Redscale != 8)
red = red >> (8-X11DRV_PALETTE_Redscale);
if (X11DRV_PALETTE_Greenscale != 8)
green = green >> (8-X11DRV_PALETTE_Greenscale);
if (X11DRV_PALETTE_Bluescale != 8)
blue = blue >> (8-X11DRV_PALETTE_Bluescale);
GDI_ReleaseObj( hPal );
return (red << X11DRV_PALETTE_Redshift) | (green << X11DRV_PALETTE_Greenshift) | (blue << X11DRV_PALETTE_Blueshift);
}
}
else
{
if( !palPtr->mapping )
WARN("Palette %04x is not realized\n", dc->hPalette);
switch(spec_type) /* we have to peruse DC and system palette */
{
default:
color &= 0xffffff;
/* fall through to RGB */
case 0: /* RGB */
if( dc && (dc->bitsPerPixel == 1) )
{
GDI_ReleaseObj( hPal );
return (((color >> 16) & 0xff) +
((color >> 8) & 0xff) + (color & 0xff) > 255*3/2) ? 1 : 0;
}
index = COLOR_PaletteLookupPixel( COLOR_sysPal, 256,
X11DRV_PALETTE_PaletteToXPixel, color, FALSE);
/* TRACE(palette,"RGB(%lx) -> pixel %i\n", color, index);
*/
break;
case 1: /* PALETTEINDEX */
index = color & 0xffff;
if( index >= palPtr->logpalette.palNumEntries )
WARN("RGB(%lx) : index %i is out of bounds\n", color, index);
else if( palPtr->mapping ) index = palPtr->mapping[index];
/* TRACE(palette,"PALETTEINDEX(%04x) -> pixel %i\n", (WORD)color, index);
*/
break;
case 2: /* PALETTERGB */
index = COLOR_PaletteLookupPixel( palPtr->logpalette.palPalEntry,
palPtr->logpalette.palNumEntries,
palPtr->mapping, color, FALSE);
/* TRACE(palette,"PALETTERGB(%lx) -> pixel %i\n", color, index);
*/
break;
}
}
GDI_ReleaseObj( hPal );
return index;
}
/***********************************************************************
* X11DRV_PALETTE_LookupSystemXPixel
*/
static int X11DRV_PALETTE_LookupSystemXPixel(COLORREF col)
{
int i, best = 0, diff = 0x7fffffff;
int size = palette_size;
int r,g,b;
for( i = 0; i < size && diff ; i++ )
{
if( i == NB_RESERVED_COLORS/2 )
{
int newi = size - NB_RESERVED_COLORS/2;
if (newi>i) i=newi;
}
r = COLOR_sysPal[i].peRed - GetRValue(col);
g = COLOR_sysPal[i].peGreen - GetGValue(col);
b = COLOR_sysPal[i].peBlue - GetBValue(col);
r = r*r + g*g + b*b;
if( r < diff ) { best = i; diff = r; }
}
return (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[best] : best;
}
/***********************************************************************
* X11DRV_PALETTE_FormatSystemPalette
*/
static void X11DRV_PALETTE_FormatSystemPalette(void)
{
/* Build free list so we'd have an easy way to find
* out if there are any available colorcells.
*/
int i, j = X11DRV_PALETTE_firstFree = NB_RESERVED_COLORS/2;
COLOR_sysPal[j].peFlags = 0;
for( i = NB_RESERVED_COLORS/2 + 1 ; i < 256 - NB_RESERVED_COLORS/2 ; i++ )
if( i < COLOR_gapStart || i > COLOR_gapEnd )
{
COLOR_sysPal[i].peFlags = 0; /* unused tag */
X11DRV_PALETTE_freeList[j] = i; /* next */
j = i;
}
X11DRV_PALETTE_freeList[j] = 0;
}
/***********************************************************************
* X11DRV_PALETTE_CheckSysColor
*/
static BOOL X11DRV_PALETTE_CheckSysColor(COLORREF c)
{
int i;
for( i = 0; i < NB_RESERVED_COLORS; i++ )
if( c == (*(COLORREF*)(COLOR_sysPalTemplate + i) & 0x00ffffff) )
return 0;
return 1;
}
/***********************************************************************
* X11DRV_PALETTE_SetMapping
*
* Set the color-mapping table for selected palette.
* Return number of entries which mapping has changed.
*/
int X11DRV_PALETTE_SetMapping( PALETTEOBJ* palPtr, UINT uStart, UINT uNum, BOOL mapOnly )
{
char flag;
int prevMapping = (palPtr->mapping) ? 1 : 0;
int index, iRemapped = 0;
int* mapping;
/* reset dynamic system palette entries */
if( !mapOnly && X11DRV_PALETTE_firstFree != -1)
X11DRV_PALETTE_FormatSystemPalette();
/* initialize palette mapping table */
mapping = HeapReAlloc( GetProcessHeap(), 0, palPtr->mapping,
sizeof(int)*palPtr->logpalette.palNumEntries);
if(mapping == NULL) {
ERR("Can not allocate new mapping -- memory exausted!\n");
return 0;
}
palPtr->mapping = mapping;
for( uNum += uStart; uStart < uNum; uStart++ )
{
index = -1;
flag = PC_SYS_USED;
switch( palPtr->logpalette.palPalEntry[uStart].peFlags & 0x07 )
{
case PC_EXPLICIT: /* palette entries are indices into system palette */
index = *(WORD*)(palPtr->logpalette.palPalEntry + uStart);
if( index > 255 || (index >= COLOR_gapStart && index <= COLOR_gapEnd) )
{
WARN("PC_EXPLICIT: idx %d out of system palette, assuming black.\n", index);
index = 0;
}
break;
case PC_RESERVED: /* forbid future mappings to this entry */
flag |= PC_SYS_RESERVED;
/* fall through */
default: /* try to collapse identical colors */
index = COLOR_PaletteLookupExactIndex(COLOR_sysPal, 256,
*(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
/* fall through */
case PC_NOCOLLAPSE:
if( index < 0 )
{
if( X11DRV_PALETTE_firstFree > 0 && !(X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_FIXED) )
{
XColor color;
index = X11DRV_PALETTE_firstFree; /* ought to be available */
X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
color.red = palPtr->logpalette.palPalEntry[uStart].peRed << 8;
color.green = palPtr->logpalette.palPalEntry[uStart].peGreen << 8;
color.blue = palPtr->logpalette.palPalEntry[uStart].peBlue << 8;
color.flags = DoRed | DoGreen | DoBlue;
TSXStoreColor(gdi_display, X11DRV_PALETTE_PaletteXColormap, &color);
COLOR_sysPal[index] = palPtr->logpalette.palPalEntry[uStart];
COLOR_sysPal[index].peFlags = flag;
X11DRV_PALETTE_freeList[index] = 0;
if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
break;
}
else if ( X11DRV_PALETTE_PaletteFlags & X11DRV_PALETTE_VIRTUAL )
{
index = X11DRV_PALETTE_ToPhysical( NULL, 0x00ffffff &
*(COLORREF*)(palPtr->logpalette.palPalEntry + uStart));
break;
}
/* we have to map to existing entry in the system palette */
index = COLOR_PaletteLookupPixel(COLOR_sysPal, 256, NULL,
*(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), TRUE);
}
palPtr->logpalette.palPalEntry[uStart].peFlags |= PC_SYS_USED;
if( X11DRV_PALETTE_PaletteToXPixel ) index = X11DRV_PALETTE_PaletteToXPixel[index];
break;
}
if( !prevMapping || palPtr->mapping[uStart] != index ) iRemapped++;
palPtr->mapping[uStart] = index;
TRACE("entry %i (%lx) -> pixel %i\n", uStart,
*(COLORREF*)(palPtr->logpalette.palPalEntry + uStart), index);
}
return iRemapped;
}
/***********************************************************************
* X11DRV_PALETTE_UpdateMapping
*
* Update the color-mapping table for selected palette.
* Return number of entries which mapping has changed.
*/
int X11DRV_PALETTE_UpdateMapping(PALETTEOBJ *palPtr)
{
int i, index, realized = 0;
if (!palette_size)
return 0;
for( i = 0; i < 20; i++ )
{
index = X11DRV_PALETTE_LookupSystemXPixel(*(COLORREF*)(palPtr->logpalette.palPalEntry + i));
/* mapping is allocated in COLOR_InitPalette() */
if( index != palPtr->mapping[i] ) { palPtr->mapping[i]=index; realized++; }
}
return realized;
}
/**************************************************************************
* X11DRV_PALETTE_IsDark
*/
BOOL X11DRV_PALETTE_IsDark(int pixel)
{
COLORREF col = X11DRV_PALETTE_ToLogical(pixel);
return (GetRValue(col) + GetGValue(col) + GetBValue(col)) <= 0x180;
}
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