Sweden-Number/dlls/winex11.drv/brush.c

297 lines
9.3 KiB
C

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