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 "xmalloc.h" /* for XCREATEIMAGE macro */
  20 #include "monitor.h"
  21 #include "local.h"
  22
  23 DEFAULT_DEBUG_CHANNEL(gdi)
  24
  25 static const char HatchBrushes[NB_HATCH_STYLES + 1][8] =
  26 {
  27     { 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00 }, /* HS_HORIZONTAL */
  28     { 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 }, /* HS_VERTICAL   */
  29     { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, /* HS_FDIAGONAL  */
  30     { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }, /* HS_BDIAGONAL  */
  31     { 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08 }, /* HS_CROSS      */
  32     { 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 }, /* HS_DIAGCROSS  */
  33     { 0xee, 0xbb, 0xee, 0xbb, 0xee, 0xbb, 0xee, 0xbb }  /* Hack for DKGRAY */
  34 };
  35
  36   /* Levels of each primary for dithering */
  37 #define PRIMARY_LEVELS  3
  38 #define TOTAL_LEVELS    (PRIMARY_LEVELS*PRIMARY_LEVELS*PRIMARY_LEVELS)
  39
  40  /* Dithering matrix size  */
  41 #define MATRIX_SIZE     8
  42 #define MATRIX_SIZE_2   (MATRIX_SIZE*MATRIX_SIZE)
  43
  44   /* Total number of possible levels for a dithered primary color */
  45 #define DITHER_LEVELS   (MATRIX_SIZE_2 * (PRIMARY_LEVELS-1) + 1)
  46
  47   /* Dithering matrix */
  48 static const int dither_matrix[MATRIX_SIZE_2] =
  49 {
  50      0, 32,  8, 40,  2, 34, 10, 42,
  51     48, 16, 56, 24, 50, 18, 58, 26,
  52     12, 44,  4, 36, 14, 46,  6, 38,
  53     60, 28, 52, 20, 62, 30, 54, 22,
  54      3, 35, 11, 43,  1, 33,  9, 41,
  55     51, 19, 59, 27, 49, 17, 57, 25,
  56     15, 47,  7, 39, 13, 45,  5, 37,
  57     63, 31, 55, 23, 61, 29, 53, 21
  58 };
  59
  60   /* Mapping between (R,G,B) triples and EGA colors */
  61 static const int EGAmapping[TOTAL_LEVELS] =
  62 {
  63     0,  /* 000000 -> 000000 */
  64     4,  /* 00007f -> 000080 */
  65     12, /* 0000ff -> 0000ff */
  66     2,  /* 007f00 -> 008000 */
  67     6,  /* 007f7f -> 008080 */
  68     6,  /* 007fff -> 008080 */
  69     10, /* 00ff00 -> 00ff00 */
  70     6,  /* 00ff7f -> 008080 */
  71     14, /* 00ffff -> 00ffff */
  72     1,  /* 7f0000 -> 800000 */
  73     5,  /* 7f007f -> 800080 */
  74     5,  /* 7f00ff -> 800080 */
  75     3,  /* 7f7f00 -> 808000 */
  76     8,  /* 7f7f7f -> 808080 */
  77     7,  /* 7f7fff -> c0c0c0 */
  78     3,  /* 7fff00 -> 808000 */
  79     7,  /* 7fff7f -> c0c0c0 */
  80     7,  /* 7fffff -> c0c0c0 */
  81     9,  /* ff0000 -> ff0000 */
  82     5,  /* ff007f -> 800080 */
  83     13, /* ff00ff -> ff00ff */
  84     3,  /* ff7f00 -> 808000 */
  85     7,  /* ff7f7f -> c0c0c0 */
  86     7,  /* ff7fff -> c0c0c0 */
  87     11, /* ffff00 -> ffff00 */
  88     7,  /* ffff7f -> c0c0c0 */
  89     15  /* ffffff -> ffffff */
  90 };
  91
  92 #define PIXEL_VALUE(r,g,b) \
  93     X11DRV_PALETTE_mapEGAPixel[EGAmapping[((r)*PRIMARY_LEVELS+(g))*PRIMARY_LEVELS+(b)]]
  94
  95   /* X image for building dithered pixmap */
  96 static XImage *ditherImage = NULL;
  97
  98
  99 /***********************************************************************
 100  *           BRUSH_Init
 101  *
 102  * Create the X image used for dithering.
 103  */
 104 BOOL X11DRV_BRUSH_Init(void)
 105 {
 106     XCREATEIMAGE( ditherImage, MATRIX_SIZE, MATRIX_SIZE, MONITOR_GetDepth(&MONITOR_PrimaryMonitor) );
 107     return (ditherImage != NULL);
 108 }
 109
 110
 111 /***********************************************************************
 112  *           BRUSH_DitherColor
 113  */
 114 static Pixmap BRUSH_DitherColor( DC *dc, COLORREF color )
 115 {
 116     static COLORREF prevColor = 0xffffffff;
 117     unsigned int x, y;
 118     Pixmap pixmap;
 119
 120     EnterCriticalSection( &X11DRV_CritSection );
 121     if (color != prevColor)
 122     {
 123         int r = GetRValue( color ) * DITHER_LEVELS;
 124         int g = GetGValue( color ) * DITHER_LEVELS;
 125         int b = GetBValue( color ) * DITHER_LEVELS;
 126         const int *pmatrix = dither_matrix;
 127
 128         for (y = 0; y < MATRIX_SIZE; y++)
 129         {
 130             for (x = 0; x < MATRIX_SIZE; x++)
 131             {
 132                 int d  = *pmatrix++ * 256;
 133                 int dr = ((r + d) / MATRIX_SIZE_2) / 256;
 134                 int dg = ((g + d) / MATRIX_SIZE_2) / 256;
 135                 int db = ((b + d) / MATRIX_SIZE_2) / 256;
 136                 XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
 137             }
 138         }
 139         prevColor = color;
 140     }
 141
 142     pixmap = XCreatePixmap( display, X11DRV_GetXRootWindow(),
 143                             MATRIX_SIZE, MATRIX_SIZE, MONITOR_GetDepth(&MONITOR_PrimaryMonitor) );
 144     XPutImage( display, pixmap, BITMAP_colorGC, ditherImage, 0, 0,
 145                0, 0, MATRIX_SIZE, MATRIX_SIZE );
 146     LeaveCriticalSection( &X11DRV_CritSection );
 147     return pixmap;
 148 }
 149
 150
 151 /***********************************************************************
 152  *           BRUSH_SelectSolidBrush
 153  */
 154 static void BRUSH_SelectSolidBrush( DC *dc, COLORREF color )
 155 {
 156     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 157
 158     if ((dc->w.bitsPerPixel > 1) && (MONITOR_GetDepth(&MONITOR_PrimaryMonitor) <= 8) && !COLOR_IsSolid( color ))
 159     {
 160           /* Dithered brush */
 161         physDev->brush.pixmap = BRUSH_DitherColor( dc, color );
 162         physDev->brush.fillStyle = FillTiled;
 163         physDev->brush.pixel = 0;
 164     }
 165     else
 166     {
 167           /* Solid brush */
 168         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( dc, color );
 169         physDev->brush.fillStyle = FillSolid;
 170     }
 171 }
 172
 173
 174 /***********************************************************************
 175  *           BRUSH_SelectPatternBrush
 176  */
 177 static BOOL BRUSH_SelectPatternBrush( DC * dc, HBITMAP hbitmap )
 178 {
 179     X11DRV_PHYSBITMAP *pbitmap;
 180     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 181     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 182     if (!bmp) return FALSE;
 183
 184    if(!bmp->DDBitmap)
 185         if(!X11DRV_CreateBitmap(hbitmap))
 186             return 0;
 187
 188     if(bmp->DDBitmap->funcs != dc->funcs) {
 189         WARN("Trying to select non-X11 DDB into an X11 dc\n");
 190         return 0;
 191     }
 192
 193     pbitmap = bmp->DDBitmap->physBitmap;
 194
 195     if ((dc->w.bitsPerPixel == 1) && (bmp->bitmap.bmBitsPixel != 1))
 196     {
 197         /* Special case: a color pattern on a monochrome DC */
 198         physDev->brush.pixmap = TSXCreatePixmap( display, X11DRV_GetXRootWindow(), 8, 8, 1);
 199         /* FIXME: should probably convert to monochrome instead */
 200         TSXCopyPlane( display, pbitmap->pixmap, physDev->brush.pixmap,
 201                     BITMAP_monoGC, 0, 0, 8, 8, 0, 0, 1 );
 202     }
 203     else
 204     {
 205         physDev->brush.pixmap = TSXCreatePixmap( display, X11DRV_GetXRootWindow(),
 206                                                8, 8, bmp->bitmap.bmBitsPixel );
 207         TSXCopyArea( display, pbitmap->pixmap, physDev->brush.pixmap,
 208                    BITMAP_GC(bmp), 0, 0, 8, 8, 0, 0 );
 209     }
 210
 211     if (bmp->bitmap.bmBitsPixel > 1)
 212     {
 213         physDev->brush.fillStyle = FillTiled;
 214         physDev->brush.pixel = 0;  /* Ignored */
 215     }
 216     else
 217     {
 218         physDev->brush.fillStyle = FillOpaqueStippled;
 219         physDev->brush.pixel = -1;  /* Special case (see DC_SetupGCForBrush) */
 220     }
 221     GDI_HEAP_UNLOCK( hbitmap );
 222     return TRUE;
 223 }
 224
 225
 226
 227
 228 /***********************************************************************
 229  *           BRUSH_SelectObject
 230  */
 231 HBRUSH X11DRV_BRUSH_SelectObject( DC * dc, HBRUSH hbrush, BRUSHOBJ * brush )
 232 {
 233     HBITMAP16 hBitmap;
 234     BITMAPINFO * bmpInfo;
 235     HBRUSH16 prevHandle = dc->w.hBrush;
 236     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 237
 238     TRACE("hdc=%04x hbrush=%04x\n",
 239                 dc->hSelf,hbrush);
 240
 241     dc->w.hBrush = hbrush;
 242
 243     if (physDev->brush.pixmap)
 244     {
 245         TSXFreePixmap( display, physDev->brush.pixmap );
 246         physDev->brush.pixmap = 0;
 247     }
 248     physDev->brush.style = brush->logbrush.lbStyle;
 249
 250     switch(brush->logbrush.lbStyle)
 251     {
 252       case BS_NULL:
 253         TRACE("BS_NULL\n" );
 254         break;
 255
 256       case BS_SOLID:
 257         TRACE("BS_SOLID\n" );
 258         BRUSH_SelectSolidBrush( dc, brush->logbrush.lbColor );
 259         break;
 260
 261       case BS_HATCHED:
 262         TRACE("BS_HATCHED\n" );
 263         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( dc, brush->logbrush.lbColor );
 264         physDev->brush.pixmap = TSXCreateBitmapFromData( display, X11DRV_GetXRootWindow(),
 265                                  HatchBrushes[brush->logbrush.lbHatch], 8, 8 );
 266         physDev->brush.fillStyle = FillStippled;
 267         break;
 268
 269       case BS_PATTERN:
 270         TRACE("BS_PATTERN\n");
 271         BRUSH_SelectPatternBrush( dc, (HBRUSH16)brush->logbrush.lbHatch );
 272         break;
 273
 274       case BS_DIBPATTERN:
 275         TRACE("BS_DIBPATTERN\n");
 276         if ((bmpInfo = (BITMAPINFO *) GlobalLock16( (HGLOBAL16)brush->logbrush.lbHatch )))
 277         {
 278             int size = DIB_BitmapInfoSize( bmpInfo, brush->logbrush.lbColor );
 279             hBitmap = CreateDIBitmap( dc->hSelf, &bmpInfo->bmiHeader,
 280                                         CBM_INIT, ((char *)bmpInfo) + size,
 281                                         bmpInfo,
 282                                         (WORD)brush->logbrush.lbColor );
 283             BRUSH_SelectPatternBrush( dc, hBitmap );
 284             DeleteObject16( hBitmap );
 285             GlobalUnlock16( (HGLOBAL16)brush->logbrush.lbHatch );
 286         }
 287
 288         break;
 289     }
 290
 291     return prevHandle;
 292 }
 293
 294 #endif /* !defined(X_DISPLAY_MISSING) */
 295