wine/dlls/wineps.drv/color.c

116 lines
3.2 KiB
C

/*
* PostScript colour functions
*
* Copyright 1998 Huw D M Davies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "psdrv.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
/**********************************************************************
* PSDRV_CopyColor
*
* Copies col2 into col1. Return FALSE on error.
*/
BOOL PSDRV_CopyColor(PSCOLOR *col1, PSCOLOR *col2)
{
switch(col2->type) {
case PSCOLOR_GRAY:
col1->value.gray.i = col2->value.gray.i;
break;
case PSCOLOR_RGB:
col1->value.rgb.r = col2->value.rgb.r;
col1->value.rgb.g = col2->value.rgb.g;
col1->value.rgb.b = col2->value.rgb.b;
break;
default:
ERR("Unknown colour type %d\n", col1->type);
return FALSE;
}
col1->type = col2->type;
return TRUE;
}
PSRGB rgb_to_grayscale_scale( void )
{
static const PSRGB scale = {0.3, 0.59, 0.11};
/* FIXME configurable */
return scale;
}
/**********************************************************************
* PSDRV_CreateColor
*
* Creates a PostScript colour from a COLORREF.
* Result is grey scale if ColorDevice field of ppd is CD_False else an
* rgb colour is produced.
*/
void PSDRV_CreateColor( PHYSDEV dev, PSCOLOR *pscolor, COLORREF wincolor )
{
PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
int ctype = wincolor >> 24;
float r, g, b;
if(ctype != 0 && ctype != 2)
FIXME("Colour is %08x\n", wincolor);
r = (wincolor & 0xff) / 256.0;
g = ((wincolor >> 8) & 0xff) / 256.0;
b = ((wincolor >> 16) & 0xff) / 256.0;
if(physDev->pi->ppd->ColorDevice != CD_False) {
pscolor->type = PSCOLOR_RGB;
pscolor->value.rgb.r = r;
pscolor->value.rgb.g = g;
pscolor->value.rgb.b = b;
} else {
PSRGB scale = rgb_to_grayscale_scale();
pscolor->type = PSCOLOR_GRAY;
pscolor->value.gray.i = r * scale.r + g * scale.g + b * scale.b;
}
return;
}
/***********************************************************************
* PSDRV_SetBkColor
*/
COLORREF PSDRV_SetBkColor( PHYSDEV dev, COLORREF color )
{
PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
PSDRV_CreateColor(dev, &physDev->bkColor, color);
return color;
}
/***********************************************************************
* PSDRV_SetTextColor
*/
COLORREF PSDRV_SetTextColor( PHYSDEV dev, COLORREF color )
{
PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
PSDRV_CreateColor(dev, &physDev->font.color, color);
physDev->font.set = FALSE;
return color;
}