dlls/wineps.drv/color.c

   1 /*
   2  *      PostScript colour functions
   3  *
   4  *      Copyright 1998  Huw D M Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "psdrv.h"
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  25
  26 /**********************************************************************
  27  *           PSDRV_CmpColor
  28  *
  29  * Return TRUE if col1 == col2
  30  */
  31 BOOL PSDRV_CmpColor(PSCOLOR *col1, PSCOLOR *col2)
  32 {
  33     if(col1->type != col2->type)
  34         return FALSE;
  35
  36     switch(col1->type) {
  37     case PSCOLOR_GRAY:
  38         if(col1->value.gray.i == col2->value.gray.i)
  39             return TRUE;
  40         break;
  41     case PSCOLOR_RGB:
  42         if( col1->value.rgb.r == col2->value.rgb.r &&
  43             col1->value.rgb.g == col2->value.rgb.g &&
  44             col1->value.rgb.b == col2->value.rgb.b )
  45             return TRUE;
  46         break;
  47     default:
  48         ERR("Unknown colour type %d\n", col1->type);
  49     }
  50     return FALSE;
  51 }
  52
  53
  54 /**********************************************************************
  55  *           PSDRV_CopyColor
  56  *
  57  * Copies col2 into col1. Return FALSE on error.
  58  */
  59 BOOL PSDRV_CopyColor(PSCOLOR *col1, PSCOLOR *col2)
  60 {
  61
  62     switch(col2->type) {
  63     case PSCOLOR_GRAY:
  64         col1->value.gray.i = col2->value.gray.i;
  65         break;
  66
  67     case PSCOLOR_RGB:
  68         col1->value.rgb.r = col2->value.rgb.r;
  69         col1->value.rgb.g = col2->value.rgb.g;
  70         col1->value.rgb.b = col2->value.rgb.b;
  71         break;
  72
  73     default:
  74         ERR("Unknown colour type %d\n", col1->type);
  75         return FALSE;
  76     }
  77
  78     col1->type = col2->type;
  79     return TRUE;
  80 }
  81
  82
  83 /**********************************************************************
  84  *           PSDRV_CreateColor
  85  *
  86  * Creates a PostScript colour from a COLORREF.
  87  * Result is grey scale if ColorDevice field of ppd is FALSE else an
  88  * rgb colour is produced.
  89  */
  90 void PSDRV_CreateColor( PSDRV_PDEVICE *physDev, PSCOLOR *pscolor,
  91                      COLORREF wincolor )
  92 {
  93     int ctype = wincolor >> 24;
  94     float r, g, b;
  95
  96     if(ctype != 0 && ctype != 2)
  97         FIXME("Colour is %08lx\n", wincolor);
  98
  99     r = (wincolor & 0xff) / 256.0;
 100     g = ((wincolor >> 8) & 0xff) / 256.0;
 101     b = ((wincolor >> 16) & 0xff) / 256.0;
 102
 103     if(physDev->pi->ppd->ColorDevice) {
 104         pscolor->type = PSCOLOR_RGB;
 105         pscolor->value.rgb.r = r;
 106         pscolor->value.rgb.g = g;
 107         pscolor->value.rgb.b = b;
 108     } else {
 109         pscolor->type = PSCOLOR_GRAY;
 110         /* FIXME configurable */
 111         pscolor->value.gray.i = r * 0.3 + g * 0.59 + b * 0.11;
 112     }
 113     return;
 114 }
 115
 116
 117 /***********************************************************************
 118  *           PSDRV_SetBkColor
 119  */
 120 COLORREF PSDRV_SetBkColor( PSDRV_PDEVICE *physDev, COLORREF color )
 121 {
 122     PSDRV_CreateColor(physDev, &physDev->bkColor, color);
 123     return color;
 124 }
 125
 126
 127 /***********************************************************************
 128  *           PSDRV_SetTextColor
 129  */
 130 COLORREF PSDRV_SetTextColor( PSDRV_PDEVICE *physDev, COLORREF color )
 131 {
 132     PSDRV_CreateColor(physDev, &physDev->font.color, color);
 133     physDev->font.set = FALSE;
 134     return color;
 135 }
 136