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     if (!ditherImage)
 116     {
 117         ditherImage = X11DRV_DIB_CreateXImage( MATRIX_SIZE, MATRIX_SIZE, depth );
 118         if (!ditherImage)
 119         {
 120             ERR("Could not create dither image\n");
 121             return 0;
 122         }
 123     }
 124
 125     wine_tsx11_lock();
 126     if (color != prevColor)
 127     {
 128         int r = GetRValue( color ) * DITHER_LEVELS;
 129         int g = GetGValue( color ) * DITHER_LEVELS;
 130         int b = GetBValue( color ) * DITHER_LEVELS;
 131         const int *pmatrix = dither_matrix;
 132
 133         for (y = 0; y < MATRIX_SIZE; y++)
 134         {
 135             for (x = 0; x < MATRIX_SIZE; x++)
 136             {
 137                 int d  = *pmatrix++ * 256;
 138                 int dr = ((r + d) / MATRIX_SIZE_2) / 256;
 139                 int dg = ((g + d) / MATRIX_SIZE_2) / 256;
 140                 int db = ((b + d) / MATRIX_SIZE_2) / 256;
 141                 XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
 142             }
 143         }
 144         prevColor = color;
 145     }
 146
 147     pixmap = XCreatePixmap( gdi_display, root_window, MATRIX_SIZE, MATRIX_SIZE, depth );
 148     XPutImage( gdi_display, pixmap, gc, ditherImage, 0, 0,
 149                0, 0, MATRIX_SIZE, MATRIX_SIZE );
 150     wine_tsx11_unlock();
 151
 152     return pixmap;
 153 }
 154
 155
 156 /***********************************************************************
 157  *           BRUSH_DitherMono
 158  */
 159 static Pixmap BRUSH_DitherMono( COLORREF color )
 160 {
 161     /* This makes the spray work in Win 3.11 pbrush.exe */
 162     /* FIXME. Extend this basic selection of dither patterns */
 163     static const char gray_dither[][2] = {{ 0x1, 0x0 }, /* DKGRAY */
 164                                           { 0x2, 0x1 }, /* GRAY */
 165                                           { 0x1, 0x3 }, /* LTGRAY */
 166     };
 167     int gray = (30 * GetRValue(color) + 59 * GetGValue(color) + 11 * GetBValue(color)) / 100;
 168     int idx = gray * (sizeof gray_dither/sizeof gray_dither[0] + 1)/256 - 1;
 169     Pixmap pixmap;
 170
 171     TRACE("color=%06x -> gray=%x\n", color, gray);
 172
 173     wine_tsx11_lock();
 174     pixmap = XCreateBitmapFromData( gdi_display, root_window,
 175                                     gray_dither[idx],
 176                                     2, 2 );
 177     wine_tsx11_unlock();
 178     return pixmap;
 179 }
 180
 181 /***********************************************************************
 182  *           BRUSH_SelectSolidBrush
 183  */
 184 static void BRUSH_SelectSolidBrush( X11DRV_PDEVICE *physDev, COLORREF color )
 185 {
 186     if ((physDev->depth > 1) && (screen_depth <= 8) && !X11DRV_IsSolidColor( color ))
 187     {
 188           /* Dithered brush */
 189         physDev->brush.pixmap = BRUSH_DitherColor( color, physDev->depth );
 190         physDev->brush.fillStyle = FillTiled;
 191         physDev->brush.pixel = 0;
 192     }
 193     else if (physDev->depth == 1 && color != WHITE && color != BLACK)
 194     {
 195         physDev->brush.pixel = 0;
 196         physDev->brush.pixmap = BRUSH_DitherMono( color );
 197         physDev->brush.fillStyle = FillTiled;
 198     }
 199     else
 200     {
 201           /* Solid brush */
 202         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, color );
 203         physDev->brush.fillStyle = FillSolid;
 204     }
 205 }
 206
 207
 208 /***********************************************************************
 209  *           BRUSH_SelectPatternBrush
 210  */
 211 static BOOL BRUSH_SelectPatternBrush( X11DRV_PDEVICE *physDev, HBITMAP hbitmap )
 212 {
 213     BITMAP bitmap;
 214     X_PHYSBITMAP *physBitmap = X11DRV_get_phys_bitmap( hbitmap );
 215
 216     if (!physBitmap || !GetObjectW( hbitmap, sizeof(bitmap), &bitmap )) return FALSE;
 217
 218     wine_tsx11_lock();
 219     if ((physDev->depth == 1) && (physBitmap->pixmap_depth != 1))
 220     {
 221         /* Special case: a color pattern on a monochrome DC */
 222         physDev->brush.pixmap = XCreatePixmap( gdi_display, root_window,
 223                                                bitmap.bmWidth, bitmap.bmHeight, 1);
 224         /* FIXME: should probably convert to monochrome instead */
 225         XCopyPlane( gdi_display, physBitmap->pixmap, physDev->brush.pixmap,
 226                     get_bitmap_gc(1), 0, 0, bitmap.bmWidth, bitmap.bmHeight, 0, 0, 1 );
 227     }
 228     else
 229     {
 230         physDev->brush.pixmap = XCreatePixmap( gdi_display, root_window,
 231                                                bitmap.bmWidth, bitmap.bmHeight,
 232                                                physBitmap->pixmap_depth );
 233         XCopyArea( gdi_display, physBitmap->pixmap, physDev->brush.pixmap,
 234                    get_bitmap_gc(physBitmap->pixmap_depth), 0, 0, bitmap.bmWidth, bitmap.bmHeight, 0, 0 );
 235     }
 236     wine_tsx11_unlock();
 237
 238     if (physBitmap->pixmap_depth > 1)
 239     {
 240         physDev->brush.fillStyle = FillTiled;
 241         physDev->brush.pixel = 0;  /* Ignored */
 242     }
 243     else
 244     {
 245         physDev->brush.fillStyle = FillOpaqueStippled;
 246         physDev->brush.pixel = -1;  /* Special case (see DC_SetupGCForBrush) */
 247     }
 248     return TRUE;
 249 }
 250
 251
 252 /***********************************************************************
 253  *           SelectBrush   (X11DRV.@)
 254  */
 255 HBRUSH CDECL X11DRV_SelectBrush( X11DRV_PDEVICE *physDev, HBRUSH hbrush )
 256 {
 257     LOGBRUSH logbrush;
 258     HBITMAP hBitmap;
 259     BITMAPINFO * bmpInfo;
 260
 261     if (!GetObjectA( hbrush, sizeof(logbrush), &logbrush )) return 0;
 262
 263     TRACE("hdc=%p hbrush=%p\n", physDev->hdc,hbrush);
 264
 265     if (physDev->brush.pixmap)
 266     {
 267         wine_tsx11_lock();
 268         XFreePixmap( gdi_display, physDev->brush.pixmap );
 269         wine_tsx11_unlock();
 270         physDev->brush.pixmap = 0;
 271     }
 272     physDev->brush.style = logbrush.lbStyle;
 273     if (hbrush == GetStockObject( DC_BRUSH ))
 274         logbrush.lbColor = GetDCBrushColor( physDev->hdc );
 275
 276     switch(logbrush.lbStyle)
 277     {
 278       case BS_NULL:
 279         TRACE("BS_NULL\n" );
 280         break;
 281
 282       case BS_SOLID:
 283         TRACE("BS_SOLID\n" );
 284         BRUSH_SelectSolidBrush( physDev, logbrush.lbColor );
 285         break;
 286
 287       case BS_HATCHED:
 288         TRACE("BS_HATCHED\n" );
 289         physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, logbrush.lbColor );
 290         wine_tsx11_lock();
 291         physDev->brush.pixmap = XCreateBitmapFromData( gdi_display, root_window,
 292                                                        HatchBrushes[logbrush.lbHatch], 8, 8 );
 293         wine_tsx11_unlock();
 294         physDev->brush.fillStyle = FillStippled;
 295         break;
 296
 297       case BS_PATTERN:
 298         TRACE("BS_PATTERN\n");
 299         if (!BRUSH_SelectPatternBrush( physDev, (HBITMAP)logbrush.lbHatch )) return 0;
 300         break;
 301
 302       case BS_DIBPATTERN:
 303         TRACE("BS_DIBPATTERN\n");
 304         if ((bmpInfo = GlobalLock16( logbrush.lbHatch )))
 305         {
 306             int size = bitmap_info_size( bmpInfo, logbrush.lbColor );
 307             hBitmap = CreateDIBitmap( physDev->hdc, &bmpInfo->bmiHeader,
 308                                         CBM_INIT, ((char *)bmpInfo) + size,
 309                                         bmpInfo,
 310                                         (WORD)logbrush.lbColor );
 311             BRUSH_SelectPatternBrush( physDev, hBitmap );
 312             DeleteObject( hBitmap );
 313             GlobalUnlock16( logbrush.lbHatch );
 314         }
 315
 316         break;
 317     }
 318     return hbrush;
 319 }
 320
 321
 322 /***********************************************************************
 323  *           SetDCBrushColor (X11DRV.@)
 324  */
 325 COLORREF CDECL X11DRV_SetDCBrushColor( X11DRV_PDEVICE *physDev, COLORREF crColor )
 326 {
 327     if (GetCurrentObject(physDev->hdc, OBJ_BRUSH) == GetStockObject( DC_BRUSH ))
 328         BRUSH_SelectSolidBrush( physDev, crColor );
 329
 330     return crColor;
 331 }