graphics/x11drv/brush.c

   1 /*
   2  * X11DRV brush objects
   3  *
   4  * Copyright 1993, 1994  Alexandre Julliard
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include "ts_xlib.h"
  24
  25 #include <stdlib.h>
  26 #include "bitmap.h"
  27 #include "x11drv.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
  31
  32 #define NB_HATCH_STYLES  (HS_DIAGCROSS+1)
  33
  34 static const char HatchBrushes[NB_HATCH_STYLES + 1][8] =
  35 {
  36     { 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00 }, /* HS_HORIZONTAL */
  37     { 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 }, /* HS_VERTICAL   */
  38     { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, /* HS_FDIAGONAL  */
  39     { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }, /* HS_BDIAGONAL  */
  40     { 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08 }, /* HS_CROSS      */
  41     { 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 }, /* HS_DIAGCROSS  */
  42     { 0xee, 0xbb, 0xee, 0xbb, 0xee, 0xbb, 0xee, 0xbb }  /* Hack for DKGRAY */
  43 };
  44
  45   /* Levels of each primary for dithering */
  46 #define PRIMARY_LEVELS  3
  47 #define TOTAL_LEVELS    (PRIMARY_LEVELS*PRIMARY_LEVELS*PRIMARY_LEVELS)
  48
  49  /* Dithering matrix size  */
  50 #define MATRIX_SIZE     8
  51 #define MATRIX_SIZE_2   (MATRIX_SIZE*MATRIX_SIZE)
  52
  53   /* Total number of possible levels for a dithered primary color */
  54 #define DITHER_LEVELS   (MATRIX_SIZE_2 * (PRIMARY_LEVELS-1) + 1)
  55
  56   /* Dithering matrix */
  57 static const int dither_matrix[MATRIX_SIZE_2] =
  58 {
  59      0, 32,  8, 40,  2, 34, 10, 42,
  60     48, 16, 56, 24, 50, 18, 58, 26,
  61     12, 44,  4, 36, 14, 46,  6, 38,
  62     60, 28, 52, 20, 62, 30, 54, 22,
  63      3, 35, 11, 43,  1, 33,  9, 41,
  64     51, 19, 59, 27, 49, 17, 57, 25,
  65     15, 47,  7, 39, 13, 45,  5, 37,
  66     63, 31, 55, 23, 61, 29, 53, 21
  67 };
  68
  69   /* Mapping between (R,G,B) triples and EGA colors */
  70 static const int EGAmapping[TOTAL_LEVELS] =
  71 {
  72     0,  /* 000000 -> 000000 */
  73     4,  /* 00007f -> 000080 */
  74     12, /* 0000ff -> 0000ff */
  75     2,  /* 007f00 -> 008000 */
  76     6,  /* 007f7f -> 008080 */
  77     6,  /* 007fff -> 008080 */
  78     10, /* 00ff00 -> 00ff00 */
  79     6,  /* 00ff7f -> 008080 */
  80     14, /* 00ffff -> 00ffff */
  81     1,  /* 7f0000 -> 800000 */
  82     5,  /* 7f007f -> 800080 */
  83     5,  /* 7f00ff -> 800080 */
  84     3,  /* 7f7f00 -> 808000 */
  85     8,  /* 7f7f7f -> 808080 */
  86     7,  /* 7f7fff -> c0c0c0 */
  87     3,  /* 7fff00 -> 808000 */
  88     7,  /* 7fff7f -> c0c0c0 */
  89     7,  /* 7fffff -> c0c0c0 */
  90     9,  /* ff0000 -> ff0000 */
  91     5,  /* ff007f -> 800080 */
  92     13, /* ff00ff -> ff00ff */
  93     3,  /* ff7f00 -> 808000 */
  94     7,  /* ff7f7f -> c0c0c0 */
  95     7,  /* ff7fff -> c0c0c0 */
  96     11, /* ffff00 -> ffff00 */
  97     7,  /* ffff7f -> c0c0c0 */
  98     15  /* ffffff -> ffffff */
  99 };
 100
 101 #define PIXEL_VALUE(r,g,b) \
 102     X11DRV_PALETTE_mapEGAPixel[EGAmapping[((r)*PRIMARY_LEVELS+(g))*PRIMARY_LEVELS+(b)]]
 103
 104   /* X image for building dithered pixmap */
 105 static XImage *ditherImage = NULL;
 106
 107
 108 /***********************************************************************
 109  *           BRUSH_DitherColor
 110  */
 111 static Pixmap BRUSH_DitherColor( DC *dc, COLORREF color )
 112 {
 113     static COLORREF prevColor = 0xffffffff;
 114     unsigned int x, y;
 115     Pixmap pixmap;
 116
 117     if (!ditherImage)
 118     {
 119         ditherImage = X11DRV_DIB_CreateXImage( MATRIX_SIZE, MATRIX_SIZE, screen_depth );
 120         if (!ditherImage) return 0;
 121     }
 122
 123     wine_tsx11_lock();
 124     if (color != prevColor)
 125     {
 126         int r = GetRValue( color ) * DITHER_LEVELS;
 127         int g = GetGValue( color ) * DITHER_LEVELS;
 128         int b = GetBValue( color ) * DITHER_LEVELS;
 129         const int *pmatrix = dither_matrix;
 130
 131         for (y = 0; y < MATRIX_SIZE; y++)
 132         {
 133             for (x = 0; x < MATRIX_SIZE; x++)
 134             {
 135                 int d  = *pmatrix++ * 256;
 136                 int dr = ((r + d) / MATRIX_SIZE_2) / 256;
 137                 int dg = ((g + d) / MATRIX_SIZE_2) / 256;
 138                 int db = ((b + d) / MATRIX_SIZE_2) / 256;
 139                 XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
 140             }
 141         }
 142         prevColor = color;
 143     }
 144
 145     pixmap = XCreatePixmap( gdi_display, root_window, MATRIX_SIZE, MATRIX_SIZE, screen_depth );
 146     XPutImage( gdi_display, pixmap, BITMAP_colorGC, ditherImage, 0, 0,
 147                0, 0, MATRIX_SIZE, MATRIX_SIZE );
 148     wine_tsx11_unlock();
 149     return pixmap;
 150 }
 151
 152
 153 /***********************************************************************
 154  *           BRUSH_SelectSolidBrush
 155  */
 156 static void BRUSH_SelectSolidBrush( X11DRV_PDEVICE *physDev, COLORREF color )
 157 {
 158     DC *dc = physDev->dc;
 159
 160     if ((dc->bitsPerPixel > 1) && (screen_depth <= 8) && !X11DRV_IsSolidColor( color ))
 161     {
 162           /* Dithered brush */
 163         physDev->brush.pixmap = BRUSH_DitherColor( dc, color );
 164         physDev->brush.fillStyle = FillTiled;
 165         physDev->brush.pixel = 0;
 166     }
 167     else
 168     {
 169           /* Solid brush */
 170         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, color );
 171         physDev->brush.fillStyle = FillSolid;
 172     }
 173 }
 174
 175
 176 /***********************************************************************
 177  *           BRUSH_SelectPatternBrush
 178  */
 179 static BOOL BRUSH_SelectPatternBrush( X11DRV_PDEVICE *physDev, HBITMAP hbitmap )
 180 {
 181     BOOL ret = FALSE;
 182     DC *dc = physDev->dc;
 183     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 184     if (!bmp) return FALSE;
 185
 186     if(!bmp->physBitmap) goto done;
 187
 188     if ((dc->bitsPerPixel == 1) && (bmp->bitmap.bmBitsPixel != 1))
 189     {
 190         /* Special case: a color pattern on a monochrome DC */
 191         physDev->brush.pixmap = TSXCreatePixmap( gdi_display, root_window, 8, 8, 1);
 192         /* FIXME: should probably convert to monochrome instead */
 193         TSXCopyPlane( gdi_display, (Pixmap)bmp->physBitmap, physDev->brush.pixmap,
 194                       BITMAP_monoGC, 0, 0, 8, 8, 0, 0, 1 );
 195     }
 196     else
 197     {
 198         physDev->brush.pixmap = TSXCreatePixmap( gdi_display, root_window,
 199                                                  8, 8, bmp->bitmap.bmBitsPixel );
 200         TSXCopyArea( gdi_display, (Pixmap)bmp->physBitmap, physDev->brush.pixmap,
 201                      BITMAP_GC(bmp), 0, 0, 8, 8, 0, 0 );
 202     }
 203
 204     if (bmp->bitmap.bmBitsPixel > 1)
 205     {
 206         physDev->brush.fillStyle = FillTiled;
 207         physDev->brush.pixel = 0;  /* Ignored */
 208     }
 209     else
 210     {
 211         physDev->brush.fillStyle = FillOpaqueStippled;
 212         physDev->brush.pixel = -1;  /* Special case (see DC_SetupGCForBrush) */
 213     }
 214     ret = TRUE;
 215  done:
 216     GDI_ReleaseObj( hbitmap );
 217     return ret;
 218 }
 219
 220
 221
 222
 223 /***********************************************************************
 224  *           SelectBrush   (X11DRV.@)
 225  */
 226 HBRUSH X11DRV_SelectBrush( X11DRV_PDEVICE *physDev, HBRUSH hbrush )
 227 {
 228     LOGBRUSH logbrush;
 229     HBITMAP16 hBitmap;
 230     BITMAPINFO * bmpInfo;
 231
 232     if (!GetObjectA( hbrush, sizeof(logbrush), &logbrush )) return 0;
 233
 234     TRACE("hdc=%04x hbrush=%04x\n", physDev->hdc,hbrush);
 235
 236     if (physDev->brush.pixmap)
 237     {
 238         TSXFreePixmap( gdi_display, physDev->brush.pixmap );
 239         physDev->brush.pixmap = 0;
 240     }
 241     physDev->brush.style = logbrush.lbStyle;
 242
 243     switch(logbrush.lbStyle)
 244     {
 245       case BS_NULL:
 246         TRACE("BS_NULL\n" );
 247         break;
 248
 249       case BS_SOLID:
 250         TRACE("BS_SOLID\n" );
 251         BRUSH_SelectSolidBrush( physDev, logbrush.lbColor );
 252         break;
 253
 254       case BS_HATCHED:
 255         TRACE("BS_HATCHED\n" );
 256         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, logbrush.lbColor );
 257         physDev->brush.pixmap = TSXCreateBitmapFromData( gdi_display, root_window,
 258                                  HatchBrushes[logbrush.lbHatch], 8, 8 );
 259         physDev->brush.fillStyle = FillStippled;
 260         break;
 261
 262       case BS_PATTERN:
 263         TRACE("BS_PATTERN\n");
 264         if (!BRUSH_SelectPatternBrush( physDev, (HBITMAP)logbrush.lbHatch )) return 0;
 265         break;
 266
 267       case BS_DIBPATTERN:
 268         TRACE("BS_DIBPATTERN\n");
 269         if ((bmpInfo = (BITMAPINFO *) GlobalLock16( (HGLOBAL16)logbrush.lbHatch )))
 270         {
 271             int size = DIB_BitmapInfoSize( bmpInfo, logbrush.lbColor );
 272             hBitmap = CreateDIBitmap( physDev->hdc, &bmpInfo->bmiHeader,
 273                                         CBM_INIT, ((char *)bmpInfo) + size,
 274                                         bmpInfo,
 275                                         (WORD)logbrush.lbColor );
 276             BRUSH_SelectPatternBrush( physDev, hBitmap );
 277             DeleteObject( hBitmap );
 278             GlobalUnlock16( (HGLOBAL16)logbrush.lbHatch );
 279         }
 280
 281         break;
 282     }
 283     return hbrush;
 284 }