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 )
 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
 114     if (!ditherImage)
 115     {
 116         ditherImage = X11DRV_DIB_CreateXImage( MATRIX_SIZE, MATRIX_SIZE, screen_depth );
 117         if (!ditherImage)
 118         {
 119             ERR("Could not create dither image\n");
 120             return 0;
 121         }
 122     }
 123
 124     wine_tsx11_lock();
 125     if (color != prevColor)
 126     {
 127         int r = GetRValue( color ) * DITHER_LEVELS;
 128         int g = GetGValue( color ) * DITHER_LEVELS;
 129         int b = GetBValue( color ) * DITHER_LEVELS;
 130         const int *pmatrix = dither_matrix;
 131
 132         for (y = 0; y < MATRIX_SIZE; y++)
 133         {
 134             for (x = 0; x < MATRIX_SIZE; x++)
 135             {
 136                 int d  = *pmatrix++ * 256;
 137                 int dr = ((r + d) / MATRIX_SIZE_2) / 256;
 138                 int dg = ((g + d) / MATRIX_SIZE_2) / 256;
 139                 int db = ((b + d) / MATRIX_SIZE_2) / 256;
 140                 XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
 141             }
 142         }
 143         prevColor = color;
 144     }
 145
 146     pixmap = XCreatePixmap( gdi_display, root_window, MATRIX_SIZE, MATRIX_SIZE, screen_depth );
 147     XPutImage( gdi_display, pixmap, BITMAP_colorGC, ditherImage, 0, 0,
 148                0, 0, MATRIX_SIZE, MATRIX_SIZE );
 149     wine_tsx11_unlock();
 150
 151     return pixmap;
 152 }
 153
 154
 155 /***********************************************************************
 156  *           BRUSH_DitherMono
 157  */
 158 static Pixmap BRUSH_DitherMono( COLORREF color )
 159 {
 160     /* This makes the spray work in Win 3.11 pbrush.exe */
 161     /* FIXME. Extend this basic selection of dither patterns */
 162     static const char gray_dither[][2] = {{ 0x1, 0x0 }, /* DKGRAY */
 163                                           { 0x2, 0x1 }, /* GRAY */
 164                                           { 0x1, 0x3 }, /* LTGRAY */
 165     };
 166     int gray = (30 * GetRValue(color) + 59 * GetGValue(color) + 11 * GetBValue(color)) / 100;
 167     int idx = gray * (sizeof gray_dither/sizeof gray_dither[0] + 1)/256 - 1;
 168     Pixmap pixmap;
 169
 170     TRACE("color=%06x -> gray=%x\n", color, gray);
 171
 172     wine_tsx11_lock();
 173     pixmap = XCreateBitmapFromData( gdi_display, root_window,
 174                                     gray_dither[idx],
 175                                     2, 2 );
 176     wine_tsx11_unlock();
 177     return pixmap;
 178 }
 179
 180 /***********************************************************************
 181  *           BRUSH_SelectSolidBrush
 182  */
 183 static void BRUSH_SelectSolidBrush( X11DRV_PDEVICE *physDev, COLORREF color )
 184 {
 185     if ((physDev->depth > 1) && (screen_depth <= 8) && !X11DRV_IsSolidColor( color ))
 186     {
 187           /* Dithered brush */
 188         physDev->brush.pixmap = BRUSH_DitherColor( color );
 189         physDev->brush.fillStyle = FillTiled;
 190         physDev->brush.pixel = 0;
 191     }
 192     else if (physDev->depth == 1 && color != WHITE && color != BLACK)
 193     {
 194         physDev->brush.pixel = 0;
 195         physDev->brush.pixmap = BRUSH_DitherMono( color );
 196         physDev->brush.fillStyle = FillTiled;
 197     }
 198     else
 199     {
 200           /* Solid brush */
 201         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, color );
 202         physDev->brush.fillStyle = FillSolid;
 203     }
 204 }
 205
 206
 207 /***********************************************************************
 208  *           BRUSH_SelectPatternBrush
 209  */
 210 static BOOL BRUSH_SelectPatternBrush( X11DRV_PDEVICE *physDev, HBITMAP hbitmap )
 211 {
 212     BITMAP bitmap;
 213     X_PHYSBITMAP *physBitmap = X11DRV_get_phys_bitmap( hbitmap );
 214
 215     if (!physBitmap || !GetObjectW( hbitmap, sizeof(bitmap), &bitmap )) return FALSE;
 216
 217     wine_tsx11_lock();
 218     if ((physDev->depth == 1) && (physBitmap->pixmap_depth != 1))
 219     {
 220         /* Special case: a color pattern on a monochrome DC */
 221         physDev->brush.pixmap = XCreatePixmap( gdi_display, root_window,
 222                                                bitmap.bmWidth, bitmap.bmHeight, 1);
 223         /* FIXME: should probably convert to monochrome instead */
 224         XCopyPlane( gdi_display, physBitmap->pixmap, physDev->brush.pixmap,
 225                     BITMAP_monoGC, 0, 0, bitmap.bmWidth, bitmap.bmHeight, 0, 0, 1 );
 226     }
 227     else
 228     {
 229         physDev->brush.pixmap = XCreatePixmap( gdi_display, root_window,
 230                                                bitmap.bmWidth, bitmap.bmHeight,
 231                                                physBitmap->pixmap_depth );
 232         XCopyArea( gdi_display, physBitmap->pixmap, physDev->brush.pixmap,
 233                    BITMAP_GC(physBitmap), 0, 0, bitmap.bmWidth, bitmap.bmHeight, 0, 0 );
 234     }
 235     wine_tsx11_unlock();
 236
 237     if (physBitmap->pixmap_depth > 1)
 238     {
 239         physDev->brush.fillStyle = FillTiled;
 240         physDev->brush.pixel = 0;  /* Ignored */
 241     }
 242     else
 243     {
 244         physDev->brush.fillStyle = FillOpaqueStippled;
 245         physDev->brush.pixel = -1;  /* Special case (see DC_SetupGCForBrush) */
 246     }
 247     return TRUE;
 248 }
 249
 250
 251 /***********************************************************************
 252  *           SelectBrush   (X11DRV.@)
 253  */
 254 HBRUSH CDECL X11DRV_SelectBrush( X11DRV_PDEVICE *physDev, HBRUSH hbrush )
 255 {
 256     LOGBRUSH logbrush;
 257     HBITMAP hBitmap;
 258     BITMAPINFO * bmpInfo;
 259
 260     if (!GetObjectA( hbrush, sizeof(logbrush), &logbrush )) return 0;
 261
 262     TRACE("hdc=%p hbrush=%p\n", physDev->hdc,hbrush);
 263
 264     if (physDev->brush.pixmap)
 265     {
 266         wine_tsx11_lock();
 267         XFreePixmap( gdi_display, physDev->brush.pixmap );
 268         wine_tsx11_unlock();
 269         physDev->brush.pixmap = 0;
 270     }
 271     physDev->brush.style = logbrush.lbStyle;
 272     if (hbrush == GetStockObject( DC_BRUSH ))
 273         logbrush.lbColor = GetDCBrushColor( physDev->hdc );
 274
 275     switch(logbrush.lbStyle)
 276     {
 277       case BS_NULL:
 278         TRACE("BS_NULL\n" );
 279         break;
 280
 281       case BS_SOLID:
 282         TRACE("BS_SOLID\n" );
 283         BRUSH_SelectSolidBrush( physDev, logbrush.lbColor );
 284         break;
 285
 286       case BS_HATCHED:
 287         TRACE("BS_HATCHED\n" );
 288         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, logbrush.lbColor );
 289         wine_tsx11_lock();
 290         physDev->brush.pixmap = XCreateBitmapFromData( gdi_display, root_window,
 291                                                        HatchBrushes[logbrush.lbHatch], 8, 8 );
 292         wine_tsx11_unlock();
 293         physDev->brush.fillStyle = FillStippled;
 294         break;
 295
 296       case BS_PATTERN:
 297         TRACE("BS_PATTERN\n");
 298         if (!BRUSH_SelectPatternBrush( physDev, (HBITMAP)logbrush.lbHatch )) return 0;
 299         break;
 300
 301       case BS_DIBPATTERN:
 302         TRACE("BS_DIBPATTERN\n");
 303         if ((bmpInfo = GlobalLock16( logbrush.lbHatch )))
 304         {
 305             int size = bitmap_info_size( bmpInfo, logbrush.lbColor );
 306             hBitmap = CreateDIBitmap( physDev->hdc, &bmpInfo->bmiHeader,
 307                                         CBM_INIT, ((char *)bmpInfo) + size,
 308                                         bmpInfo,
 309                                         (WORD)logbrush.lbColor );
 310             BRUSH_SelectPatternBrush( physDev, hBitmap );
 311             DeleteObject( hBitmap );
 312             GlobalUnlock16( logbrush.lbHatch );
 313         }
 314
 315         break;
 316     }
 317     return hbrush;
 318 }
 319
 320
 321 /***********************************************************************
 322  *           SetDCBrushColor (X11DRV.@)
 323  */
 324 COLORREF CDECL X11DRV_SetDCBrushColor( X11DRV_PDEVICE *physDev, COLORREF crColor )
 325 {
 326     if (GetCurrentObject(physDev->hdc, OBJ_BRUSH) == GetStockObject( DC_BRUSH ))
 327         BRUSH_SelectSolidBrush( physDev, crColor );
 328
 329     return crColor;
 330 }