Sweden-Number/dlls/gdi32/brush.c

356 lines
10 KiB
C

/*
* GDI 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 <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "ntgdi_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(gdi);
/* GDI logical brush object */
typedef struct
{
struct gdi_obj_header obj;
LOGBRUSH logbrush;
struct brush_pattern pattern;
} BRUSHOBJ;
#define NB_HATCH_STYLES 6
static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer );
static BOOL BRUSH_DeleteObject( HGDIOBJ handle );
static const struct gdi_obj_funcs brush_funcs =
{
BRUSH_GetObject, /* pGetObjectW */
NULL, /* pUnrealizeObject */
BRUSH_DeleteObject /* pDeleteObject */
};
static BOOL copy_bitmap( struct brush_pattern *brush, HBITMAP bitmap )
{
char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256])];
BITMAPINFO *info = (BITMAPINFO *)buffer;
struct gdi_image_bits bits;
struct bitblt_coords src;
BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, NTGDI_OBJ_BITMAP );
if (!bmp) return FALSE;
src.visrect.left = src.x = 0;
src.visrect.top = src.y = 0;
src.visrect.right = src.width = bmp->dib.dsBm.bmWidth;
src.visrect.bottom = src.height = bmp->dib.dsBm.bmHeight;
if (get_image_from_bitmap( bmp, info, &bits, &src )) goto done;
brush->bits = bits;
if (!bits.free)
{
if (!(brush->bits.ptr = HeapAlloc( GetProcessHeap(), 0, info->bmiHeader.biSizeImage ))) goto done;
memcpy( brush->bits.ptr, bits.ptr, info->bmiHeader.biSizeImage );
brush->bits.free = free_heap_bits;
}
if (!(brush->info = HeapAlloc( GetProcessHeap(), 0, get_dib_info_size( info, DIB_RGB_COLORS ))))
{
if (brush->bits.free) brush->bits.free( &brush->bits );
goto done;
}
memcpy( brush->info, info, get_dib_info_size( info, DIB_RGB_COLORS ));
brush->bits.is_copy = FALSE; /* the bits can't be modified */
brush->usage = DIB_RGB_COLORS;
done:
GDI_ReleaseObj( bitmap );
return brush->info != NULL;
}
BOOL store_brush_pattern( LOGBRUSH *brush, struct brush_pattern *pattern )
{
pattern->info = NULL;
pattern->bits.free = NULL;
switch (brush->lbStyle)
{
case BS_SOLID:
case BS_HOLLOW:
return TRUE;
case BS_HATCHED:
if (brush->lbHatch > HS_DIAGCROSS)
{
if (brush->lbHatch >= HS_API_MAX) return FALSE;
brush->lbStyle = BS_SOLID;
brush->lbHatch = 0;
}
return TRUE;
case BS_PATTERN8X8:
brush->lbStyle = BS_PATTERN;
/* fall through */
case BS_PATTERN:
brush->lbColor = 0;
return copy_bitmap( pattern, (HBITMAP)brush->lbHatch );
case BS_DIBPATTERNPT:
pattern->usage = brush->lbColor;
pattern->info = copy_packed_dib( (BITMAPINFO *)brush->lbHatch, pattern->usage );
if (!pattern->info) return FALSE;
pattern->bits.ptr = (char *)pattern->info + get_dib_info_size( pattern->info, pattern->usage );
brush->lbStyle = BS_DIBPATTERN;
brush->lbColor = 0;
return TRUE;
case BS_DIBPATTERN:
case BS_DIBPATTERN8X8:
case BS_MONOPATTERN:
case BS_INDEXED:
default:
WARN( "invalid brush style %u\n", brush->lbStyle );
return FALSE;
}
}
void free_brush_pattern( struct brush_pattern *pattern )
{
if (pattern->bits.free) pattern->bits.free( &pattern->bits );
HeapFree( GetProcessHeap(), 0, pattern->info );
}
BOOL get_brush_bitmap_info( HBRUSH handle, BITMAPINFO *info, void *bits, UINT *usage )
{
BRUSHOBJ *brush;
BOOL ret = FALSE;
if (!(brush = GDI_GetObjPtr( handle, NTGDI_OBJ_BRUSH ))) return FALSE;
if (brush->pattern.info)
{
if (info)
{
memcpy( info, brush->pattern.info,
get_dib_info_size( brush->pattern.info, brush->pattern.usage ));
if (info->bmiHeader.biBitCount <= 8 && !info->bmiHeader.biClrUsed)
fill_default_color_table( info );
if (info->bmiHeader.biHeight < 0)
info->bmiHeader.biHeight = -info->bmiHeader.biHeight;
}
if (bits)
{
/* always return a bottom-up DIB */
if (brush->pattern.info->bmiHeader.biHeight < 0)
{
unsigned int i, width_bytes, height = -brush->pattern.info->bmiHeader.biHeight;
char *dst_ptr;
width_bytes = get_dib_stride( brush->pattern.info->bmiHeader.biWidth,
brush->pattern.info->bmiHeader.biBitCount );
dst_ptr = (char *)bits + (height - 1) * width_bytes;
for (i = 0; i < height; i++, dst_ptr -= width_bytes)
memcpy( dst_ptr, (char *)brush->pattern.bits.ptr + i * width_bytes,
width_bytes );
}
else memcpy( bits, brush->pattern.bits.ptr,
brush->pattern.info->bmiHeader.biSizeImage );
}
if (usage) *usage = brush->pattern.usage;
ret = TRUE;
}
GDI_ReleaseObj( handle );
return ret;
}
HBRUSH create_brush( const LOGBRUSH *brush )
{
BRUSHOBJ * ptr;
HBRUSH hbrush;
if (!(ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(*ptr) ))) return 0;
ptr->logbrush = *brush;
if (store_brush_pattern( &ptr->logbrush, &ptr->pattern ) &&
(hbrush = alloc_gdi_handle( &ptr->obj, NTGDI_OBJ_BRUSH, &brush_funcs )))
{
TRACE("%p\n", hbrush);
return hbrush;
}
free_brush_pattern( &ptr->pattern );
HeapFree( GetProcessHeap(), 0, ptr );
return 0;
}
/***********************************************************************
* NtGdiCreateHatchBrushInternal (win32u.@)
*
* Create a logical brush with a hatched pattern.
*/
HBRUSH WINAPI NtGdiCreateHatchBrushInternal( INT style, COLORREF color, BOOL pen )
{
LOGBRUSH logbrush;
TRACE( "%d %06x\n", style, color );
logbrush.lbStyle = BS_HATCHED;
logbrush.lbColor = color;
logbrush.lbHatch = style;
return create_brush( &logbrush );
}
/***********************************************************************
* NtGdiCreatePatternBrushInternal (win32u.@)
*
* Create a logical brush with a pattern from a bitmap.
*/
HBRUSH WINAPI NtGdiCreatePatternBrushInternal( HBITMAP bitmap, BOOL pen, BOOL is_8x8 )
{
LOGBRUSH logbrush = { BS_PATTERN, 0, 0 };
TRACE( "%p\n", bitmap );
logbrush.lbHatch = (ULONG_PTR)bitmap;
return create_brush( &logbrush );
}
/***********************************************************************
* NtGdiCreateDIBBrush (win32u.@)
*
* Create a logical brush with a pattern from a DIB.
*/
HBRUSH WINAPI NtGdiCreateDIBBrush( const void *data, UINT coloruse, UINT size,
BOOL is_8x8, BOOL pen, const void *client )
{
const BITMAPINFO *info = data;
LOGBRUSH logbrush;
if (!data)
return NULL;
TRACE( "%p %dx%d %dbpp\n", info, info->bmiHeader.biWidth,
info->bmiHeader.biHeight, info->bmiHeader.biBitCount );
logbrush.lbStyle = BS_DIBPATTERNPT;
logbrush.lbColor = coloruse;
logbrush.lbHatch = (ULONG_PTR)data;
return create_brush( &logbrush );
}
/***********************************************************************
* NtGdiCreateSolidBrush (win32u.@)
*
* Create a logical brush consisting of a single colour.
*/
HBRUSH WINAPI NtGdiCreateSolidBrush( COLORREF color, HBRUSH brush )
{
LOGBRUSH logbrush;
TRACE("%06x\n", color );
logbrush.lbStyle = BS_SOLID;
logbrush.lbColor = color;
logbrush.lbHatch = 0;
return create_brush( &logbrush );
}
/***********************************************************************
* NtGdiSelectBrush (win32u.@)
*/
HGDIOBJ WINAPI NtGdiSelectBrush( HDC hdc, HGDIOBJ handle )
{
BRUSHOBJ *brush;
HGDIOBJ ret = 0;
DC *dc;
if (!(dc = get_dc_ptr( hdc ))) return 0;
if ((brush = GDI_GetObjPtr( handle, NTGDI_OBJ_BRUSH )))
{
PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSelectBrush );
struct brush_pattern *pattern = &brush->pattern;
if (!pattern->info) pattern = NULL;
GDI_inc_ref_count( handle );
GDI_ReleaseObj( handle );
if (!physdev->funcs->pSelectBrush( physdev, handle, pattern ))
{
GDI_dec_ref_count( handle );
}
else
{
ret = dc->hBrush;
dc->hBrush = handle;
GDI_dec_ref_count( ret );
}
}
release_dc_ptr( dc );
return ret;
}
/***********************************************************************
* BRUSH_DeleteObject
*/
static BOOL BRUSH_DeleteObject( HGDIOBJ handle )
{
BRUSHOBJ *brush = free_gdi_handle( handle );
if (!brush) return FALSE;
free_brush_pattern( &brush->pattern );
HeapFree( GetProcessHeap(), 0, brush );
return TRUE;
}
/***********************************************************************
* BRUSH_GetObject
*/
static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer )
{
BRUSHOBJ *brush = GDI_GetObjPtr( handle, NTGDI_OBJ_BRUSH );
if (!brush) return 0;
if (buffer)
{
if (count > sizeof(brush->logbrush)) count = sizeof(brush->logbrush);
memcpy( buffer, &brush->logbrush, count );
}
else count = sizeof(brush->logbrush);
GDI_ReleaseObj( handle );
return count;
}