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296 lines
9.3 KiB
C
296 lines
9.3 KiB
C
/*
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* X11DRV brush objects
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*
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* Copyright 1993, 1994 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include "x11drv.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(gdi);
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static const char HatchBrushes[][8] =
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{
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{ 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00 }, /* HS_HORIZONTAL */
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{ 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 }, /* HS_VERTICAL */
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{ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, /* HS_FDIAGONAL */
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{ 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }, /* HS_BDIAGONAL */
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{ 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08 }, /* HS_CROSS */
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{ 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 }, /* HS_DIAGCROSS */
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};
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/* Levels of each primary for dithering */
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#define PRIMARY_LEVELS 3
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#define TOTAL_LEVELS (PRIMARY_LEVELS*PRIMARY_LEVELS*PRIMARY_LEVELS)
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/* Dithering matrix size */
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#define MATRIX_SIZE 8
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#define MATRIX_SIZE_2 (MATRIX_SIZE*MATRIX_SIZE)
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/* Total number of possible levels for a dithered primary color */
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#define DITHER_LEVELS (MATRIX_SIZE_2 * (PRIMARY_LEVELS-1) + 1)
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/* Dithering matrix */
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static const int dither_matrix[MATRIX_SIZE_2] =
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{
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0, 32, 8, 40, 2, 34, 10, 42,
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48, 16, 56, 24, 50, 18, 58, 26,
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12, 44, 4, 36, 14, 46, 6, 38,
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60, 28, 52, 20, 62, 30, 54, 22,
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3, 35, 11, 43, 1, 33, 9, 41,
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51, 19, 59, 27, 49, 17, 57, 25,
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15, 47, 7, 39, 13, 45, 5, 37,
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63, 31, 55, 23, 61, 29, 53, 21
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};
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/* Mapping between (R,G,B) triples and EGA colors */
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static const int EGAmapping[TOTAL_LEVELS] =
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{
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0, /* 000000 -> 000000 */
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4, /* 00007f -> 000080 */
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12, /* 0000ff -> 0000ff */
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2, /* 007f00 -> 008000 */
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6, /* 007f7f -> 008080 */
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6, /* 007fff -> 008080 */
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10, /* 00ff00 -> 00ff00 */
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6, /* 00ff7f -> 008080 */
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14, /* 00ffff -> 00ffff */
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1, /* 7f0000 -> 800000 */
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5, /* 7f007f -> 800080 */
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5, /* 7f00ff -> 800080 */
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3, /* 7f7f00 -> 808000 */
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8, /* 7f7f7f -> 808080 */
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7, /* 7f7fff -> c0c0c0 */
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3, /* 7fff00 -> 808000 */
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7, /* 7fff7f -> c0c0c0 */
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7, /* 7fffff -> c0c0c0 */
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9, /* ff0000 -> ff0000 */
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5, /* ff007f -> 800080 */
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13, /* ff00ff -> ff00ff */
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3, /* ff7f00 -> 808000 */
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7, /* ff7f7f -> c0c0c0 */
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7, /* ff7fff -> c0c0c0 */
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11, /* ffff00 -> ffff00 */
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7, /* ffff7f -> c0c0c0 */
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15 /* ffffff -> ffffff */
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};
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#define PIXEL_VALUE(r,g,b) \
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X11DRV_PALETTE_mapEGAPixel[EGAmapping[((r)*PRIMARY_LEVELS+(g))*PRIMARY_LEVELS+(b)]]
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static const COLORREF BLACK = RGB(0, 0, 0);
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static const COLORREF WHITE = RGB(0xff, 0xff, 0xff);
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/***********************************************************************
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* BRUSH_DitherColor
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*/
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static Pixmap BRUSH_DitherColor( COLORREF color, int depth)
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{
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/* X image for building dithered pixmap */
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static XImage *ditherImage = NULL;
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static COLORREF prevColor = 0xffffffff;
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unsigned int x, y;
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Pixmap pixmap;
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GC gc;
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XLockDisplay( gdi_display );
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if (!ditherImage)
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{
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ditherImage = XCreateImage( gdi_display, default_visual.visual, depth, ZPixmap, 0,
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NULL, MATRIX_SIZE, MATRIX_SIZE, 32, 0 );
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if (!ditherImage)
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{
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ERR("Could not create dither image\n");
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XUnlockDisplay( gdi_display );
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return 0;
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}
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ditherImage->data = HeapAlloc( GetProcessHeap(), 0,
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ditherImage->height * ditherImage->bytes_per_line );
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}
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if (color != prevColor)
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{
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int r = GetRValue( color ) * DITHER_LEVELS;
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int g = GetGValue( color ) * DITHER_LEVELS;
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int b = GetBValue( color ) * DITHER_LEVELS;
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const int *pmatrix = dither_matrix;
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for (y = 0; y < MATRIX_SIZE; y++)
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{
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for (x = 0; x < MATRIX_SIZE; x++)
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{
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int d = *pmatrix++ * 256;
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int dr = ((r + d) / MATRIX_SIZE_2) / 256;
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int dg = ((g + d) / MATRIX_SIZE_2) / 256;
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int db = ((b + d) / MATRIX_SIZE_2) / 256;
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XPutPixel( ditherImage, x, y, PIXEL_VALUE(dr,dg,db) );
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}
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}
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prevColor = color;
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}
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pixmap = XCreatePixmap( gdi_display, root_window, MATRIX_SIZE, MATRIX_SIZE, depth );
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gc = XCreateGC( gdi_display, pixmap, 0, NULL );
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XPutImage( gdi_display, pixmap, gc, ditherImage, 0, 0, 0, 0, MATRIX_SIZE, MATRIX_SIZE );
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XFreeGC( gdi_display, gc );
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XUnlockDisplay( gdi_display );
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return pixmap;
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}
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/***********************************************************************
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* BRUSH_DitherMono
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*/
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static Pixmap BRUSH_DitherMono( COLORREF color )
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{
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/* This makes the spray work in Win 3.11 pbrush.exe */
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/* FIXME. Extend this basic selection of dither patterns */
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static const char gray_dither[][2] = {{ 0x1, 0x0 }, /* DKGRAY */
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{ 0x2, 0x1 }, /* GRAY */
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{ 0x1, 0x3 }, /* LTGRAY */
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};
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int gray = (30 * GetRValue(color) + 59 * GetGValue(color) + 11 * GetBValue(color)) / 100;
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int idx = gray * (sizeof gray_dither/sizeof gray_dither[0] + 1)/256 - 1;
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TRACE("color=%06x -> gray=%x\n", color, gray);
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return XCreateBitmapFromData( gdi_display, root_window, gray_dither[idx], 2, 2 );
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}
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/***********************************************************************
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* BRUSH_SelectSolidBrush
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*/
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static void BRUSH_SelectSolidBrush( X11DRV_PDEVICE *physDev, COLORREF color )
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{
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COLORREF colorRGB = X11DRV_PALETTE_GetColor( physDev, color );
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if ((physDev->depth > 1) && (default_visual.depth <= 8) && !X11DRV_IsSolidColor( color ))
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{
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/* Dithered brush */
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physDev->brush.pixmap = BRUSH_DitherColor( colorRGB, physDev->depth );
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physDev->brush.fillStyle = FillTiled;
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physDev->brush.pixel = 0;
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}
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else if (physDev->depth == 1 && colorRGB != WHITE && colorRGB != BLACK)
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{
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physDev->brush.pixel = 0;
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physDev->brush.pixmap = BRUSH_DitherMono( colorRGB );
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physDev->brush.fillStyle = FillTiled;
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}
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else
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{
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/* Solid brush */
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physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, color );
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physDev->brush.fillStyle = FillSolid;
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}
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}
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static BOOL select_pattern_brush( X11DRV_PDEVICE *physdev, const struct brush_pattern *pattern )
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{
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XVisualInfo vis = default_visual;
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Pixmap pixmap;
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const BITMAPINFO *info = pattern->info;
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if (physdev->depth == 1 || info->bmiHeader.biBitCount == 1) vis.depth = 1;
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pixmap = create_pixmap_from_image( physdev->dev.hdc, &vis, info, &pattern->bits, pattern->usage );
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if (!pixmap) return FALSE;
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if (physdev->brush.pixmap) XFreePixmap( gdi_display, physdev->brush.pixmap );
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physdev->brush.pixmap = pixmap;
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if (vis.depth == 1)
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{
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physdev->brush.fillStyle = FillOpaqueStippled;
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physdev->brush.pixel = -1; /* Special case (see DC_SetupGCForBrush) */
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}
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else
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{
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physdev->brush.fillStyle = FillTiled;
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physdev->brush.pixel = 0; /* Ignored */
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}
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return TRUE;
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}
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/***********************************************************************
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* SelectBrush (X11DRV.@)
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*/
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HBRUSH X11DRV_SelectBrush( PHYSDEV dev, HBRUSH hbrush, const struct brush_pattern *pattern )
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{
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X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
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LOGBRUSH logbrush;
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if (pattern) /* pattern brush */
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{
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if (!select_pattern_brush( physDev, pattern )) return 0;
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TRACE("BS_PATTERN\n");
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physDev->brush.style = BS_PATTERN;
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return hbrush;
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}
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if (!GetObjectA( hbrush, sizeof(logbrush), &logbrush )) return 0;
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TRACE("hdc=%p hbrush=%p\n", dev->hdc, hbrush);
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if (physDev->brush.pixmap)
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{
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XFreePixmap( gdi_display, physDev->brush.pixmap );
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physDev->brush.pixmap = 0;
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}
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physDev->brush.style = logbrush.lbStyle;
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if (hbrush == GetStockObject( DC_BRUSH ))
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logbrush.lbColor = GetDCBrushColor( dev->hdc );
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switch(logbrush.lbStyle)
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{
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case BS_NULL:
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TRACE("BS_NULL\n" );
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break;
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case BS_SOLID:
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TRACE("BS_SOLID\n" );
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BRUSH_SelectSolidBrush( physDev, logbrush.lbColor );
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break;
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case BS_HATCHED:
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TRACE("BS_HATCHED\n" );
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physDev->brush.pixel = X11DRV_PALETTE_ToPhysical( physDev, logbrush.lbColor );
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physDev->brush.pixmap = XCreateBitmapFromData( gdi_display, root_window,
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HatchBrushes[logbrush.lbHatch], 8, 8 );
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physDev->brush.fillStyle = FillStippled;
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break;
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}
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return hbrush;
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}
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/***********************************************************************
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* SetDCBrushColor (X11DRV.@)
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*/
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COLORREF X11DRV_SetDCBrushColor( PHYSDEV dev, COLORREF crColor )
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{
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X11DRV_PDEVICE *physDev = get_x11drv_dev( dev );
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if (GetCurrentObject(dev->hdc, OBJ_BRUSH) == GetStockObject( DC_BRUSH ))
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BRUSH_SelectSolidBrush( physDev, crColor );
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return crColor;
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}
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