graphics/x11drv/brush.c

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