graphics/x11drv/brush.c

   1 /*
   2  * X11DRV brush objects
   3  *
   4  * Copyright 1993, 1994  Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #ifndef X_DISPLAY_MISSING
  10
  11 #include "ts_xlib.h"
  12
  13 #include <stdlib.h>
  14 #include "brush.h"
  15 #include "bitmap.h"
  16 #include "color.h"
  17 #include "x11drv.h"
  18 #include "debugtools.h"
  19 #include "local.h"
  20
  21 DEFAULT_DEBUG_CHANNEL(gdi);
  22
  23 static const char HatchBrushes[NB_HATCH_STYLES + 1][8] =
  24 {
  25     { 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00 }, /* HS_HORIZONTAL */
  26     { 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 }, /* HS_VERTICAL   */
  27     { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, /* HS_FDIAGONAL  */
  28     { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }, /* HS_BDIAGONAL  */
  29     { 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08 }, /* HS_CROSS      */
  30     { 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 }, /* HS_DIAGCROSS  */
  31     { 0xee, 0xbb, 0xee, 0xbb, 0xee, 0xbb, 0xee, 0xbb }  /* Hack for DKGRAY */
  32 };
  33
  34   /* Levels of each primary for dithering */
  35 #define PRIMARY_LEVELS  3
  36 #define TOTAL_LEVELS    (PRIMARY_LEVELS*PRIMARY_LEVELS*PRIMARY_LEVELS)
  37
  38  /* Dithering matrix size  */
  39 #define MATRIX_SIZE     8
  40 #define MATRIX_SIZE_2   (MATRIX_SIZE*MATRIX_SIZE)
  41
  42   /* Total number of possible levels for a dithered primary color */
  43 #define DITHER_LEVELS   (MATRIX_SIZE_2 * (PRIMARY_LEVELS-1) + 1)
  44
  45   /* Dithering matrix */
  46 static const int dither_matrix[MATRIX_SIZE_2] =
  47 {
  48      0, 32,  8, 40,  2, 34, 10, 42,
  49     48, 16, 56, 24, 50, 18, 58, 26,
  50     12, 44,  4, 36, 14, 46,  6, 38,
  51     60, 28, 52, 20, 62, 30, 54, 22,
  52      3, 35, 11, 43,  1, 33,  9, 41,
  53     51, 19, 59, 27, 49, 17, 57, 25,
  54     15, 47,  7, 39, 13, 45,  5, 37,
  55     63, 31, 55, 23, 61, 29, 53, 21
  56 };
  57
  58   /* Mapping between (R,G,B) triples and EGA colors */
  59 static const int EGAmapping[TOTAL_LEVELS] =
  60 {
  61     0,  /* 000000 -> 000000 */
  62     4,  /* 00007f -> 000080 */
  63     12, /* 0000ff -> 0000ff */
  64     2,  /* 007f00 -> 008000 */
  65     6,  /* 007f7f -> 008080 */
  66     6,  /* 007fff -> 008080 */
  67     10, /* 00ff00 -> 00ff00 */
  68     6,  /* 00ff7f -> 008080 */
  69     14, /* 00ffff -> 00ffff */
  70     1,  /* 7f0000 -> 800000 */
  71     5,  /* 7f007f -> 800080 */
  72     5,  /* 7f00ff -> 800080 */
  73     3,  /* 7f7f00 -> 808000 */
  74     8,  /* 7f7f7f -> 808080 */
  75     7,  /* 7f7fff -> c0c0c0 */
  76     3,  /* 7fff00 -> 808000 */
  77     7,  /* 7fff7f -> c0c0c0 */
  78     7,  /* 7fffff -> c0c0c0 */
  79     9,  /* ff0000 -> ff0000 */
  80     5,  /* ff007f -> 800080 */
  81     13, /* ff00ff -> ff00ff */
  82     3,  /* ff7f00 -> 808000 */
  83     7,  /* ff7f7f -> c0c0c0 */
  84     7,  /* ff7fff -> c0c0c0 */
  85     11, /* ffff00 -> ffff00 */
  86     7,  /* ffff7f -> c0c0c0 */
  87     15  /* ffffff -> ffffff */
  88 };
  89
  90 #define PIXEL_VALUE(r,g,b) \
  91     X11DRV_PALETTE_mapEGAPixel[EGAmapping[((r)*PRIMARY_LEVELS+(g))*PRIMARY_LEVELS+(b)]]
  92
  93   /* X image for building dithered pixmap */
  94 static XImage *ditherImage = NULL;
  95
  96
  97 /***********************************************************************
  98  *           BRUSH_Init
  99  *
 100  * Create the X image used for dithering.
 101  */
 102 BOOL X11DRV_BRUSH_Init(void)
 103 {
 104     XCREATEIMAGE( ditherImage, MATRIX_SIZE, MATRIX_SIZE, X11DRV_GetDepth() );
 105     return (ditherImage != NULL);
 106 }
 107
 108
 109 /***********************************************************************
 110  *           BRUSH_DitherColor
 111  */
 112 static Pixmap BRUSH_DitherColor( DC *dc, COLORREF color )
 113 {
 114     static COLORREF prevColor = 0xffffffff;
 115     unsigned int x, y;
 116     Pixmap pixmap;
 117
 118     EnterCriticalSection( &X11DRV_CritSection );
 119     if (color != prevColor)
 120     {
 121         int r = GetRValue( color ) * DITHER_LEVELS;
 122         int g = GetGValue( color ) * DITHER_LEVELS;
 123         int b = GetBValue( color ) * DITHER_LEVELS;
 124         const int *pmatrix = dither_matrix;
 125
 126         for (y = 0; y < MATRIX_SIZE; y++)
 127         {
 128             for (x = 0; x < MATRIX_SIZE; x++)
 129             {
 130                 int d  = *pmatrix++ * 256;
 131                 int dr = ((r + d) / MATRIX_SIZE_2) / 256;
 132                 int dg = ((g + d) / MATRIX_SIZE_2) / 256;
 133                 int db = ((b + d) / MATRIX_SIZE_2) / 256;
 134                 XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
 135             }
 136         }
 137         prevColor = color;
 138     }
 139
 140     pixmap = XCreatePixmap( display, X11DRV_GetXRootWindow(),
 141                             MATRIX_SIZE, MATRIX_SIZE, X11DRV_GetDepth() );
 142     XPutImage( display, pixmap, BITMAP_colorGC, ditherImage, 0, 0,
 143                0, 0, MATRIX_SIZE, MATRIX_SIZE );
 144     LeaveCriticalSection( &X11DRV_CritSection );
 145     return pixmap;
 146 }
 147
 148
 149 /***********************************************************************
 150  *           BRUSH_SelectSolidBrush
 151  */
 152 static void BRUSH_SelectSolidBrush( DC *dc, COLORREF color )
 153 {
 154     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 155
 156     if ((dc->w.bitsPerPixel > 1) && (X11DRV_GetDepth() <= 8) && !COLOR_IsSolid( color ))
 157     {
 158           /* Dithered brush */
 159         physDev->brush.pixmap = BRUSH_DitherColor( dc, color );
 160         physDev->brush.fillStyle = FillTiled;
 161         physDev->brush.pixel = 0;
 162     }
 163     else
 164     {
 165           /* Solid brush */
 166         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( dc, color );
 167         physDev->brush.fillStyle = FillSolid;
 168     }
 169 }
 170
 171
 172 /***********************************************************************
 173  *           BRUSH_SelectPatternBrush
 174  */
 175 static BOOL BRUSH_SelectPatternBrush( DC * dc, HBITMAP hbitmap )
 176 {
 177     X11DRV_PHYSBITMAP *pbitmap;
 178     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 179     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 180     if (!bmp) return FALSE;
 181
 182    if(!bmp->DDBitmap)
 183         if(!X11DRV_CreateBitmap(hbitmap))
 184             return 0;
 185
 186     if(bmp->DDBitmap->funcs != dc->funcs) {
 187         WARN("Trying to select non-X11 DDB into an X11 dc\n");
 188         return 0;
 189     }
 190
 191     pbitmap = bmp->DDBitmap->physBitmap;
 192
 193     if ((dc->w.bitsPerPixel == 1) && (bmp->bitmap.bmBitsPixel != 1))
 194     {
 195         /* Special case: a color pattern on a monochrome DC */
 196         physDev->brush.pixmap = TSXCreatePixmap( display, X11DRV_GetXRootWindow(), 8, 8, 1);
 197         /* FIXME: should probably convert to monochrome instead */
 198         TSXCopyPlane( display, pbitmap->pixmap, physDev->brush.pixmap,
 199                     BITMAP_monoGC, 0, 0, 8, 8, 0, 0, 1 );
 200     }
 201     else
 202     {
 203         physDev->brush.pixmap = TSXCreatePixmap( display, X11DRV_GetXRootWindow(),
 204                                                8, 8, bmp->bitmap.bmBitsPixel );
 205         TSXCopyArea( display, pbitmap->pixmap, physDev->brush.pixmap,
 206                    BITMAP_GC(bmp), 0, 0, 8, 8, 0, 0 );
 207     }
 208
 209     if (bmp->bitmap.bmBitsPixel > 1)
 210     {
 211         physDev->brush.fillStyle = FillTiled;
 212         physDev->brush.pixel = 0;  /* Ignored */
 213     }
 214     else
 215     {
 216         physDev->brush.fillStyle = FillOpaqueStippled;
 217         physDev->brush.pixel = -1;  /* Special case (see DC_SetupGCForBrush) */
 218     }
 219     GDI_HEAP_UNLOCK( hbitmap );
 220     return TRUE;
 221 }
 222
 223
 224
 225
 226 /***********************************************************************
 227  *           BRUSH_SelectObject
 228  */
 229 HBRUSH X11DRV_BRUSH_SelectObject( DC * dc, HBRUSH hbrush, BRUSHOBJ * brush )
 230 {
 231     HBITMAP16 hBitmap;
 232     BITMAPINFO * bmpInfo;
 233     HBRUSH16 prevHandle = dc->w.hBrush;
 234     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 235
 236     TRACE("hdc=%04x hbrush=%04x\n",
 237                 dc->hSelf,hbrush);
 238
 239     dc->w.hBrush = hbrush;
 240
 241     if (physDev->brush.pixmap)
 242     {
 243         TSXFreePixmap( display, physDev->brush.pixmap );
 244         physDev->brush.pixmap = 0;
 245     }
 246     physDev->brush.style = brush->logbrush.lbStyle;
 247
 248     switch(brush->logbrush.lbStyle)
 249     {
 250       case BS_NULL:
 251         TRACE("BS_NULL\n" );
 252         break;
 253
 254       case BS_SOLID:
 255         TRACE("BS_SOLID\n" );
 256         BRUSH_SelectSolidBrush( dc, brush->logbrush.lbColor );
 257         break;
 258
 259       case BS_HATCHED:
 260         TRACE("BS_HATCHED\n" );
 261         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( dc, brush->logbrush.lbColor );
 262         physDev->brush.pixmap = TSXCreateBitmapFromData( display, X11DRV_GetXRootWindow(),
 263                                  HatchBrushes[brush->logbrush.lbHatch], 8, 8 );
 264         physDev->brush.fillStyle = FillStippled;
 265         break;
 266
 267       case BS_PATTERN:
 268         TRACE("BS_PATTERN\n");
 269         BRUSH_SelectPatternBrush( dc, (HBRUSH16)brush->logbrush.lbHatch );
 270         break;
 271
 272       case BS_DIBPATTERN:
 273         TRACE("BS_DIBPATTERN\n");
 274         if ((bmpInfo = (BITMAPINFO *) GlobalLock16( (HGLOBAL16)brush->logbrush.lbHatch )))
 275         {
 276             int size = DIB_BitmapInfoSize( bmpInfo, brush->logbrush.lbColor );
 277             hBitmap = CreateDIBitmap( dc->hSelf, &bmpInfo->bmiHeader,
 278                                         CBM_INIT, ((char *)bmpInfo) + size,
 279                                         bmpInfo,
 280                                         (WORD)brush->logbrush.lbColor );
 281             BRUSH_SelectPatternBrush( dc, hBitmap );
 282             DeleteObject16( hBitmap );
 283             GlobalUnlock16( (HGLOBAL16)brush->logbrush.lbHatch );
 284         }
 285
 286         break;
 287     }
 288
 289     return prevHandle;
 290 }
 291
 292 #endif /* !defined(X_DISPLAY_MISSING) */
 293