Sweden-Number/graphics/psdrv/color.c

135 lines
3.1 KiB
C

/*
* PostScript colour functions
*
* Copyright 1998 Huw D M Davies
*
*/
#include "psdrv.h"
#include "debug.h"
/**********************************************************************
* PSDRV_CmpColor
*
* Return TRUE if col1 == col2
*/
BOOL PSDRV_CmpColor(PSCOLOR *col1, PSCOLOR *col2)
{
if(col1->type != col2->type)
return FALSE;
switch(col1->type) {
case PSCOLOR_GRAY:
if(col1->value.gray.i == col2->value.gray.i)
return TRUE;
break;
case PSCOLOR_RGB:
if( col1->value.rgb.r == col2->value.rgb.r &&
col1->value.rgb.g == col2->value.rgb.g &&
col1->value.rgb.b == col2->value.rgb.b )
return TRUE;
break;
default:
ERR(psdrv, "Unknown colour type %d\n", col1->type);
}
return FALSE;
}
/**********************************************************************
* 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(psdrv, "Unknown colour type %d\n", col1->type);
return FALSE;
}
col1->type = col2->type;
return TRUE;
}
/**********************************************************************
* PSDRV_CreateColor
*
* Creates a PostScript colour from a COLORREF.
* Result is grey scale if ColorDevice field of ppd is FALSE else an
* rgb colour is produced.
*/
void PSDRV_CreateColor( PSDRV_PDEVICE *physDev, PSCOLOR *pscolor,
COLORREF wincolor )
{
int ctype = wincolor >> 24;
float r, g, b;
if(ctype != 0)
FIXME(psdrv, "Colour is %08lx\n", wincolor);
r = (wincolor & 0xff) / 256.0;
g = ((wincolor >> 8) & 0xff) / 256.0;
b = ((wincolor >> 16) & 0xff) / 256.0;
if(physDev->pi->ppd->ColorDevice) {
pscolor->type = PSCOLOR_RGB;
pscolor->value.rgb.r = r;
pscolor->value.rgb.g = g;
pscolor->value.rgb.b = b;
} else {
pscolor->type = PSCOLOR_GRAY;
/* FIXME configurable */
pscolor->value.gray.i = r * 0.3 + g * 0.59 + b * 0.11;
}
return;
}
/***********************************************************************
* PSDRV_SetBkColor
*/
COLORREF PSDRV_SetBkColor( DC *dc, COLORREF color )
{
PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
COLORREF oldColor;
oldColor = dc->w.backgroundColor;
dc->w.backgroundColor = color;
PSDRV_CreateColor(physDev, &physDev->bkColor, color);
return oldColor;
}
/***********************************************************************
* PSDRV_SetTextColor
*/
COLORREF PSDRV_SetTextColor( DC *dc, COLORREF color )
{
PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
COLORREF oldColor;
oldColor = dc->w.textColor;
dc->w.textColor = color;
PSDRV_CreateColor(physDev, &physDev->font.color, color);
physDev->font.set = FALSE;
return oldColor;
}