dlls/winex11.drv/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24
  25 #include "wine/winbase16.h"
  26 #include "x11drv.h"
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(gdi);
  30
  31 static const char HatchBrushes[][8] =
  32 {
  33     { 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00 }, /* HS_HORIZONTAL */
  34     { 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 }, /* HS_VERTICAL   */
  35     { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, /* HS_FDIAGONAL  */
  36     { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }, /* HS_BDIAGONAL  */
  37     { 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08 }, /* HS_CROSS      */
  38     { 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 }, /* HS_DIAGCROSS  */
  39 };
  40
  41   /* Levels of each primary for dithering */
  42 #define PRIMARY_LEVELS  3
  43 #define TOTAL_LEVELS    (PRIMARY_LEVELS*PRIMARY_LEVELS*PRIMARY_LEVELS)
  44
  45  /* Dithering matrix size  */
  46 #define MATRIX_SIZE     8
  47 #define MATRIX_SIZE_2   (MATRIX_SIZE*MATRIX_SIZE)
  48
  49   /* Total number of possible levels for a dithered primary color */
  50 #define DITHER_LEVELS   (MATRIX_SIZE_2 * (PRIMARY_LEVELS-1) + 1)
  51
  52   /* Dithering matrix */
  53 static const int dither_matrix[MATRIX_SIZE_2] =
  54 {
  55      0, 32,  8, 40,  2, 34, 10, 42,
  56     48, 16, 56, 24, 50, 18, 58, 26,
  57     12, 44,  4, 36, 14, 46,  6, 38,
  58     60, 28, 52, 20, 62, 30, 54, 22,
  59      3, 35, 11, 43,  1, 33,  9, 41,
  60     51, 19, 59, 27, 49, 17, 57, 25,
  61     15, 47,  7, 39, 13, 45,  5, 37,
  62     63, 31, 55, 23, 61, 29, 53, 21
  63 };
  64
  65   /* Mapping between (R,G,B) triples and EGA colors */
  66 static const int EGAmapping[TOTAL_LEVELS] =
  67 {
  68     0,  /* 000000 -> 000000 */
  69     4,  /* 00007f -> 000080 */
  70     12, /* 0000ff -> 0000ff */
  71     2,  /* 007f00 -> 008000 */
  72     6,  /* 007f7f -> 008080 */
  73     6,  /* 007fff -> 008080 */
  74     10, /* 00ff00 -> 00ff00 */
  75     6,  /* 00ff7f -> 008080 */
  76     14, /* 00ffff -> 00ffff */
  77     1,  /* 7f0000 -> 800000 */
  78     5,  /* 7f007f -> 800080 */
  79     5,  /* 7f00ff -> 800080 */
  80     3,  /* 7f7f00 -> 808000 */
  81     8,  /* 7f7f7f -> 808080 */
  82     7,  /* 7f7fff -> c0c0c0 */
  83     3,  /* 7fff00 -> 808000 */
  84     7,  /* 7fff7f -> c0c0c0 */
  85     7,  /* 7fffff -> c0c0c0 */
  86     9,  /* ff0000 -> ff0000 */
  87     5,  /* ff007f -> 800080 */
  88     13, /* ff00ff -> ff00ff */
  89     3,  /* ff7f00 -> 808000 */
  90     7,  /* ff7f7f -> c0c0c0 */
  91     7,  /* ff7fff -> c0c0c0 */
  92     11, /* ffff00 -> ffff00 */
  93     7,  /* ffff7f -> c0c0c0 */
  94     15  /* ffffff -> ffffff */
  95 };
  96
  97 #define PIXEL_VALUE(r,g,b) \
  98     X11DRV_PALETTE_mapEGAPixel[EGAmapping[((r)*PRIMARY_LEVELS+(g))*PRIMARY_LEVELS+(b)]]
  99
 100 static const COLORREF BLACK = RGB(0, 0, 0);
 101 static const COLORREF WHITE = RGB(0xff, 0xff, 0xff);
 102
 103 /***********************************************************************
 104  *           BRUSH_DitherColor
 105  */
 106 static Pixmap BRUSH_DitherColor( COLORREF color, int depth)
 107 {
 108     /* X image for building dithered pixmap */
 109     static XImage *ditherImage = NULL;
 110     static COLORREF prevColor = 0xffffffff;
 111     unsigned int x, y;
 112     Pixmap pixmap;
 113     GC gc = get_bitmap_gc(depth);
 114
 115     wine_tsx11_lock();
 116     if (!ditherImage)
 117     {
 118         ditherImage = XCreateImage( gdi_display, visual, depth, ZPixmap, 0,
 119                                     NULL, MATRIX_SIZE, MATRIX_SIZE, 32, 0 );
 120         if (!ditherImage)
 121         {
 122             wine_tsx11_unlock();
 123             ERR("Could not create dither image\n");
 124             return 0;
 125         }
 126         ditherImage->data = HeapAlloc( GetProcessHeap(), 0,
 127                                        ditherImage->height * ditherImage->bytes_per_line );
 128     }
 129
 130     if (color != prevColor)
 131     {
 132         int r = GetRValue( color ) * DITHER_LEVELS;
 133         int g = GetGValue( color ) * DITHER_LEVELS;
 134         int b = GetBValue( color ) * DITHER_LEVELS;
 135         const int *pmatrix = dither_matrix;
 136
 137         for (y = 0; y < MATRIX_SIZE; y++)
 138         {
 139             for (x = 0; x < MATRIX_SIZE; x++)
 140             {
 141                 int d  = *pmatrix++ * 256;
 142                 int dr = ((r + d) / MATRIX_SIZE_2) / 256;
 143                 int dg = ((g + d) / MATRIX_SIZE_2) / 256;
 144                 int db = ((b + d) / MATRIX_SIZE_2) / 256;
 145                 XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
 146             }
 147         }
 148         prevColor = color;
 149     }
 150
 151     pixmap = XCreatePixmap( gdi_display, root_window, MATRIX_SIZE, MATRIX_SIZE, depth );
 152     XPutImage( gdi_display, pixmap, gc, ditherImage, 0, 0,
 153                0, 0, MATRIX_SIZE, MATRIX_SIZE );
 154     wine_tsx11_unlock();
 155
 156     return pixmap;
 157 }
 158
 159
 160 /***********************************************************************
 161  *           BRUSH_DitherMono
 162  */
 163 static Pixmap BRUSH_DitherMono( COLORREF color )
 164 {
 165     /* This makes the spray work in Win 3.11 pbrush.exe */
 166     /* FIXME. Extend this basic selection of dither patterns */
 167     static const char gray_dither[][2] = {{ 0x1, 0x0 }, /* DKGRAY */
 168                                           { 0x2, 0x1 }, /* GRAY */
 169                                           { 0x1, 0x3 }, /* LTGRAY */
 170     };
 171     int gray = (30 * GetRValue(color) + 59 * GetGValue(color) + 11 * GetBValue(color)) / 100;
 172     int idx = gray * (sizeof gray_dither/sizeof gray_dither[0] + 1)/256 - 1;
 173     Pixmap pixmap;
 174
 175     TRACE("color=%06x -> gray=%x\n", color, gray);
 176
 177     wine_tsx11_lock();
 178     pixmap = XCreateBitmapFromData( gdi_display, root_window,
 179                                     gray_dither[idx],
 180                                     2, 2 );
 181     wine_tsx11_unlock();
 182     return pixmap;
 183 }
 184
 185 /***********************************************************************
 186  *           BRUSH_SelectSolidBrush
 187  */
 188 static void BRUSH_SelectSolidBrush( X11DRV_PDEVICE *physDev, COLORREF color )
 189 {
 190     COLORREF colorRGB = X11DRV_PALETTE_GetColor( physDev, color );
 191     if ((physDev->depth > 1) && (screen_depth <= 8) && !X11DRV_IsSolidColor( color ))
 192     {
 193           /* Dithered brush */
 194         physDev->brush.pixmap = BRUSH_DitherColor( colorRGB, physDev->depth );
 195         physDev->brush.fillStyle = FillTiled;
 196         physDev->brush.pixel = 0;
 197     }
 198     else if (physDev->depth == 1 && colorRGB != WHITE && colorRGB != BLACK)
 199     {
 200         physDev->brush.pixel = 0;
 201         physDev->brush.pixmap = BRUSH_DitherMono( colorRGB );
 202         physDev->brush.fillStyle = FillTiled;
 203     }
 204     else
 205     {
 206           /* Solid brush */
 207         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, color );
 208         physDev->brush.fillStyle = FillSolid;
 209     }
 210 }
 211
 212
 213 /***********************************************************************
 214  *           BRUSH_SelectPatternBrush
 215  */
 216 static void BRUSH_SelectPatternBrush( X11DRV_PDEVICE *physDev, HBITMAP hbitmap, X_PHYSBITMAP *physBitmap )
 217 {
 218     BITMAP bitmap;
 219
 220     GetObjectW( hbitmap, sizeof(bitmap), &bitmap );
 221
 222     wine_tsx11_lock();
 223
 224     if (physDev->brush.pixmap) XFreePixmap( gdi_display, physDev->brush.pixmap );
 225
 226     if ((physDev->depth == 1) && (physBitmap->depth != 1))
 227     {
 228         /* Special case: a color pattern on a monochrome DC */
 229         physDev->brush.pixmap = XCreatePixmap( gdi_display, root_window,
 230                                                bitmap.bmWidth, bitmap.bmHeight, 1);
 231         /* FIXME: should probably convert to monochrome instead */
 232         XCopyPlane( gdi_display, physBitmap->pixmap, physDev->brush.pixmap,
 233                     get_bitmap_gc(1), 0, 0, bitmap.bmWidth, bitmap.bmHeight, 0, 0, 1 );
 234     }
 235     else
 236     {
 237         physDev->brush.pixmap = XCreatePixmap( gdi_display, root_window,
 238                                                bitmap.bmWidth, bitmap.bmHeight, physBitmap->depth );
 239         XCopyArea( gdi_display, physBitmap->pixmap, physDev->brush.pixmap,
 240                    get_bitmap_gc(physBitmap->depth), 0, 0, bitmap.bmWidth, bitmap.bmHeight, 0, 0 );
 241     }
 242     wine_tsx11_unlock();
 243
 244     if (physBitmap->depth > 1)
 245     {
 246         physDev->brush.fillStyle = FillTiled;
 247         physDev->brush.pixel = 0;  /* Ignored */
 248     }
 249     else
 250     {
 251         physDev->brush.fillStyle = FillOpaqueStippled;
 252         physDev->brush.pixel = -1;  /* Special case (see DC_SetupGCForBrush) */
 253     }
 254 }
 255
 256 /* create a bitmap appropriate for the given DIB pattern brush */
 257 HBITMAP create_brush_bitmap( X11DRV_PDEVICE *physDev, const struct brush_pattern *pattern )
 258 {
 259     HDC memdc;
 260     int bpp = screen_bpp;
 261     HBITMAP bitmap;
 262     const BITMAPINFO *info = pattern->info;
 263
 264     if (physDev->depth == 1 || info->bmiHeader.biBitCount == 1) bpp = 1;
 265     bitmap = CreateBitmap( info->bmiHeader.biWidth, abs(info->bmiHeader.biHeight), 1, bpp, NULL );
 266     if (!bitmap) return 0;
 267
 268     /* make sure it's owned by x11drv */
 269     memdc = CreateCompatibleDC( physDev->dev.hdc );
 270     SelectObject( memdc, bitmap );
 271     DeleteDC( memdc );
 272     if (!X11DRV_get_phys_bitmap( bitmap ))
 273     {
 274         DeleteObject( bitmap );
 275         return 0;
 276     }
 277
 278     SetDIBits( physDev->dev.hdc, bitmap, 0, abs(info->bmiHeader.biHeight),
 279                pattern->bits.ptr, info, pattern->usage );
 280     return bitmap;
 281 }
 282
 283
 284 /***********************************************************************
 285  *           SelectBrush   (X11DRV.@)
 286  */
 287 HBRUSH X11DRV_SelectBrush( PHYSDEV dev, HBRUSH hbrush, const struct brush_pattern *pattern )
 288 {
 289     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
 290     LOGBRUSH logbrush;
 291
 292     if (pattern)  /* pattern brush */
 293     {
 294         X_PHYSBITMAP *physbitmap;
 295         HBITMAP bitmap = pattern->bitmap;
 296         BOOL delete_bitmap = FALSE;
 297
 298         if (!bitmap || !(physbitmap = X11DRV_get_phys_bitmap( bitmap )))
 299         {
 300             if (!(bitmap = create_brush_bitmap( physDev, pattern ))) return 0;
 301             physbitmap = X11DRV_get_phys_bitmap( bitmap );
 302             delete_bitmap = TRUE;
 303         }
 304         BRUSH_SelectPatternBrush( physDev, bitmap, physbitmap );
 305         TRACE("BS_PATTERN\n");
 306         physDev->brush.style = BS_PATTERN;
 307         if (delete_bitmap) DeleteObject( bitmap );
 308         return hbrush;
 309     }
 310
 311     if (!GetObjectA( hbrush, sizeof(logbrush), &logbrush )) return 0;
 312
 313     TRACE("hdc=%p hbrush=%p\n", dev->hdc, hbrush);
 314
 315     if (physDev->brush.pixmap)
 316     {
 317         wine_tsx11_lock();
 318         XFreePixmap( gdi_display, physDev->brush.pixmap );
 319         wine_tsx11_unlock();
 320         physDev->brush.pixmap = 0;
 321     }
 322     physDev->brush.style = logbrush.lbStyle;
 323     if (hbrush == GetStockObject( DC_BRUSH ))
 324         logbrush.lbColor = GetDCBrushColor( dev->hdc );
 325
 326     switch(logbrush.lbStyle)
 327     {
 328       case BS_NULL:
 329         TRACE("BS_NULL\n" );
 330         break;
 331
 332       case BS_SOLID:
 333         TRACE("BS_SOLID\n" );
 334         BRUSH_SelectSolidBrush( physDev, logbrush.lbColor );
 335         break;
 336
 337       case BS_HATCHED:
 338         TRACE("BS_HATCHED\n" );
 339         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, logbrush.lbColor );
 340         wine_tsx11_lock();
 341         physDev->brush.pixmap = XCreateBitmapFromData( gdi_display, root_window,
 342                                                        HatchBrushes[logbrush.lbHatch], 8, 8 );
 343         wine_tsx11_unlock();
 344         physDev->brush.fillStyle = FillStippled;
 345         break;
 346     }
 347     return hbrush;
 348 }
 349
 350
 351 /***********************************************************************
 352  *           SetDCBrushColor (X11DRV.@)
 353  */
 354 COLORREF X11DRV_SetDCBrushColor( PHYSDEV dev, COLORREF crColor )
 355 {
 356     X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
 357
 358     if (GetCurrentObject(dev->hdc, OBJ_BRUSH) == GetStockObject( DC_BRUSH ))
 359         BRUSH_SelectSolidBrush( physDev, crColor );
 360
 361     return crColor;
 362 }