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Sweden-Number/objects/brush.c

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/*
* GDI brush objects
*
* Copyright 1993, 1994 Alexandre Julliard
*/
#include <stdlib.h>
#include "brush.h"
#include "bitmap.h"
#include "metafile.h"
#include "color.h"
#include "stddebug.h"
#include "debug.h"
#include "xmalloc.h"
#define NB_HATCH_STYLES 6
static const char HatchBrushes[NB_HATCH_STYLES][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) \
COLOR_mapEGAPixel[EGAmapping[((r)*PRIMARY_LEVELS+(g))*PRIMARY_LEVELS+(b)]]
/* X image for building dithered pixmap */
static XImage *ditherImage = NULL;
/***********************************************************************
* BRUSH_Init
*
* Create the X image used for dithering.
*/
BOOL BRUSH_Init(void)
{
XCREATEIMAGE( ditherImage, MATRIX_SIZE, MATRIX_SIZE, screenDepth );
return (ditherImage != NULL);
}
/***********************************************************************
* BRUSH_DitherColor
*/
Pixmap BRUSH_DitherColor( DC *dc, COLORREF color )
{
static COLORREF prevColor = 0xffffffff;
unsigned int x, y;
Pixmap pixmap;
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( display, rootWindow,
MATRIX_SIZE, MATRIX_SIZE, screenDepth );
XPutImage( display, pixmap, BITMAP_colorGC, ditherImage, 0, 0,
0, 0, MATRIX_SIZE, MATRIX_SIZE );
return pixmap;
}
/***********************************************************************
* CreateBrushIndirect (GDI.50)
*/
HBRUSH CreateBrushIndirect( const LOGBRUSH * brush )
{
BRUSHOBJ * brushPtr;
HBRUSH hbrush = GDI_AllocObject( sizeof(BRUSHOBJ), BRUSH_MAGIC );
if (!hbrush) return 0;
brushPtr = (BRUSHOBJ *) GDI_HEAP_LIN_ADDR( hbrush );
memcpy( &brushPtr->logbrush, brush, sizeof(LOGBRUSH) );
return hbrush;
}
/***********************************************************************
* CreateHatchBrush (GDI.58)
*/
HBRUSH CreateHatchBrush( INT style, COLORREF color )
{
LOGBRUSH logbrush = { BS_HATCHED, color, style };
dprintf_gdi(stddeb, "CreateHatchBrush: %d %06lx\n", style, color );
if ((style < 0) || (style >= NB_HATCH_STYLES)) return 0;
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreatePatternBrush (GDI.60)
*/
HBRUSH CreatePatternBrush( HBITMAP hbitmap )
{
LOGBRUSH logbrush = { BS_PATTERN, 0, 0 };
BITMAPOBJ *bmp, *newbmp;
dprintf_gdi(stddeb, "CreatePatternBrush: %04x\n", hbitmap );
/* Make a copy of the bitmap */
if (!(bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
return 0;
logbrush.lbHatch = (INT)CreateBitmapIndirect( &bmp->bitmap );
newbmp = (BITMAPOBJ *) GDI_GetObjPtr( (HANDLE)logbrush.lbHatch, BITMAP_MAGIC );
if (!newbmp) return 0;
XCopyArea( display, bmp->pixmap, newbmp->pixmap, BITMAP_GC(bmp),
0, 0, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight, 0, 0 );
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreateDIBPatternBrush (GDI.445)
*/
HBRUSH CreateDIBPatternBrush( HGLOBAL hbitmap, UINT coloruse )
{
LOGBRUSH logbrush = { BS_DIBPATTERN, coloruse, 0 };
BITMAPINFO *info, *newInfo;
int size;
dprintf_gdi(stddeb, "CreateDIBPatternBrush: %04x\n", hbitmap );
/* Make a copy of the bitmap */
if (!(info = (BITMAPINFO *) GlobalLock( hbitmap ))) return 0;
size = info->bmiHeader.biSizeImage;
if (!size)
size = (info->bmiHeader.biWidth * info->bmiHeader.biBitCount + 31) / 32
* 8 * info->bmiHeader.biHeight;
size += DIB_BitmapInfoSize( info, coloruse );
if (!(logbrush.lbHatch = (INT)GlobalAlloc( GMEM_MOVEABLE, size )))
{
GlobalUnlock( hbitmap );
return 0;
}
newInfo = (BITMAPINFO *) GlobalLock( (HANDLE)logbrush.lbHatch );
memcpy( newInfo, info, size );
GlobalUnlock( (HANDLE)logbrush.lbHatch );
GlobalUnlock( hbitmap );
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreateSolidBrush (GDI.66)
*/
HBRUSH CreateSolidBrush( COLORREF color )
{
LOGBRUSH logbrush = { BS_SOLID, color, 0 };
dprintf_gdi(stddeb, "CreateSolidBrush: %06lx\n", color );
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* SetBrushOrg (GDI.148)
*/
DWORD SetBrushOrg( HDC hdc, short x, short y )
{
DWORD retval;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return FALSE;
retval = dc->w.brushOrgX | (dc->w.brushOrgY << 16);
dc->w.brushOrgX = x;
dc->w.brushOrgY = y;
return retval;
}
/***********************************************************************
* GetSysColorBrush (USER.281)
*/
HBRUSH GetSysColorBrush(WORD x)
{
return GetStockObject(GRAY_BRUSH);
}
/***********************************************************************
* BRUSH_DeleteObject
*/
BOOL BRUSH_DeleteObject( HBRUSH hbrush, BRUSHOBJ * brush )
{
switch(brush->logbrush.lbStyle)
{
case BS_PATTERN:
DeleteObject( (HANDLE)brush->logbrush.lbHatch );
break;
case BS_DIBPATTERN:
GlobalFree( (HANDLE)brush->logbrush.lbHatch );
break;
}
return GDI_FreeObject( hbrush );
}
/***********************************************************************
* BRUSH_GetObject
*/
int BRUSH_GetObject( BRUSHOBJ * brush, int count, LPSTR buffer )
{
if (count > sizeof(LOGBRUSH)) count = sizeof(LOGBRUSH);
memcpy( buffer, &brush->logbrush, count );
return count;
}
/***********************************************************************
* BRUSH_SelectSolidBrush
*/
static void BRUSH_SelectSolidBrush( DC *dc, COLORREF color )
{
if ((dc->w.bitsPerPixel > 1) && (screenDepth <= 8) && !COLOR_IsSolid( color ))
{
/* Dithered brush */
dc->u.x.brush.pixmap = BRUSH_DitherColor( dc, color );
dc->u.x.brush.fillStyle = FillTiled;
dc->u.x.brush.pixel = 0;
}
else
{
/* Solid brush */
dc->u.x.brush.pixel = COLOR_ToPhysical( dc, color );
dc->u.x.brush.fillStyle = FillSolid;
}
}
/***********************************************************************
* BRUSH_SelectPatternBrush
*/
static BOOL BRUSH_SelectPatternBrush( DC * dc, HBITMAP hbitmap )
{
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return FALSE;
dc->u.x.brush.pixmap = XCreatePixmap( display, rootWindow,
8, 8, bmp->bitmap.bmBitsPixel );
XCopyArea( display, bmp->pixmap, dc->u.x.brush.pixmap,
BITMAP_GC(bmp), 0, 0, 8, 8, 0, 0 );
if (bmp->bitmap.bmBitsPixel > 1)
{
dc->u.x.brush.fillStyle = FillTiled;
dc->u.x.brush.pixel = 0; /* Ignored */
}
else
{
dc->u.x.brush.fillStyle = FillOpaqueStippled;
dc->u.x.brush.pixel = -1; /* Special case (see DC_SetupGCForBrush) */
}
return TRUE;
}
/***********************************************************************
* BRUSH_SelectObject
*/
HBRUSH BRUSH_SelectObject( HDC hdc, DC * dc, HBRUSH hbrush, BRUSHOBJ * brush )
{
HBITMAP hBitmap;
BITMAPINFO * bmpInfo;
HBRUSH prevHandle = dc->w.hBrush;
dprintf_gdi(stddeb, "Brush_SelectObject: hdc=%04x hbrush=%04x\n",
hdc,hbrush);
if (dc->header.wMagic == METAFILE_DC_MAGIC)
{
switch (brush->logbrush.lbStyle)
{
case BS_SOLID:
case BS_HATCHED:
case BS_HOLLOW:
if (!MF_CreateBrushIndirect(dc, hbrush, &(brush->logbrush)))
return (HBRUSH)0;
break;
case BS_PATTERN:
case BS_DIBPATTERN:
if (!MF_CreatePatternBrush(dc, hbrush, &(brush->logbrush)))
return (HBRUSH)0;
break;
}
return (HBRUSH)1;
}
dc->w.hBrush = hbrush;
if (dc->u.x.brush.pixmap)
{
XFreePixmap( display, dc->u.x.brush.pixmap );
dc->u.x.brush.pixmap = 0;
}
dc->u.x.brush.style = brush->logbrush.lbStyle;
switch(brush->logbrush.lbStyle)
{
case BS_NULL:
dprintf_gdi( stddeb,"BS_NULL\n" );
break;
case BS_SOLID:
dprintf_gdi( stddeb,"BS_SOLID\n" );
BRUSH_SelectSolidBrush( dc, brush->logbrush.lbColor );
break;
case BS_HATCHED:
dprintf_gdi( stddeb, "BS_HATCHED\n" );
dc->u.x.brush.pixel = COLOR_ToPhysical( dc, brush->logbrush.lbColor );
dc->u.x.brush.pixmap = XCreateBitmapFromData( display, rootWindow,
HatchBrushes[brush->logbrush.lbHatch], 8, 8 );
dc->u.x.brush.fillStyle = FillStippled;
break;
case BS_PATTERN:
dprintf_gdi( stddeb, "BS_PATTERN\n");
BRUSH_SelectPatternBrush( dc, (HBRUSH)brush->logbrush.lbHatch );
break;
case BS_DIBPATTERN:
dprintf_gdi( stddeb, "BS_DIBPATTERN\n");
if ((bmpInfo = (BITMAPINFO *) GlobalLock( (HANDLE)brush->logbrush.lbHatch )))
{
int size = DIB_BitmapInfoSize( bmpInfo, brush->logbrush.lbColor );
hBitmap = CreateDIBitmap( hdc, &bmpInfo->bmiHeader, CBM_INIT,
((char *)bmpInfo) + size, bmpInfo,
(WORD) brush->logbrush.lbColor );
BRUSH_SelectPatternBrush( dc, hBitmap );
DeleteObject( hBitmap );
GlobalUnlock( (HANDLE)brush->logbrush.lbHatch );
}
break;
}
return prevHandle;
}
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