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Sweden-Number/dlls/gdi32/brush.c

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/*
* 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 )
{
HGLOBAL hmem = 0;
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_DIBPATTERN:
hmem = (HGLOBAL)brush->lbHatch;
if (!(brush->lbHatch = (ULONG_PTR)GlobalLock( hmem ))) return FALSE;
/* fall through */
case BS_DIBPATTERNPT:
pattern->usage = brush->lbColor;
pattern->info = copy_packed_dib( (BITMAPINFO *)brush->lbHatch, pattern->usage );
if (hmem) GlobalUnlock( hmem );
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_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)
{
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 );
*bits = brush->pattern.bits.ptr;
*usage = brush->pattern.usage;
ret = TRUE;
}
GDI_ReleaseObj( handle );
return ret;
}
/***********************************************************************
* CreateBrushIndirect (GDI32.@)
*
* Create a logical brush with a given style, color or pattern.
*
* PARAMS
* brush [I] Pointer to a LOGBRUSH structure describing the desired brush.
*
* RETURNS
* A handle to the created brush, or a NULL handle if the brush cannot be
* created.
*
* NOTES
* - The brush returned should be freed by the caller using DeleteObject()
* when it is no longer required.
* - Windows 95 and earlier cannot create brushes from bitmaps or DIBs larger
* than 8x8 pixels. If a larger bitmap is given, only a portion of the bitmap
* is used.
*/
HBRUSH WINAPI CreateBrushIndirect( 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;
}
/***********************************************************************
* CreateHatchBrush (GDI32.@)
*
* Create a logical brush with a hatched pattern.
*
* PARAMS
* style [I] Direction of lines for the hatch pattern (HS_* values from "wingdi.h")
* color [I] Colour of the hatched pattern
*
* RETURNS
* A handle to the created brush, or a NULL handle if the brush cannot
* be created.
*
* NOTES
* - This function uses CreateBrushIndirect() to create the brush.
* - The brush returned should be freed by the caller using DeleteObject()
* when it is no longer required.
*/
HBRUSH WINAPI CreateHatchBrush( INT style, COLORREF color )
{
LOGBRUSH logbrush;
TRACE("%d %06x\n", style, color );
logbrush.lbStyle = BS_HATCHED;
logbrush.lbColor = color;
logbrush.lbHatch = style;
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreatePatternBrush (GDI32.@)
*
* Create a logical brush with a pattern from a bitmap.
*
* PARAMS
* hbitmap [I] Bitmap containing pattern for the brush
*
* RETURNS
* A handle to the created brush, or a NULL handle if the brush cannot
* be created.
*
* NOTES
* - This function uses CreateBrushIndirect() to create the brush.
* - The brush returned should be freed by the caller using DeleteObject()
* when it is no longer required.
*/
HBRUSH WINAPI CreatePatternBrush( HBITMAP hbitmap )
{
LOGBRUSH logbrush = { BS_PATTERN, 0, 0 };
TRACE("%p\n", hbitmap );
logbrush.lbHatch = (ULONG_PTR)hbitmap;
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreateDIBPatternBrush (GDI32.@)
*
* Create a logical brush with a pattern from a DIB.
*
* PARAMS
* hbitmap [I] Global object containing BITMAPINFO structure for the pattern
* coloruse [I] Specifies color format, if provided
*
* RETURNS
* A handle to the created brush, or a NULL handle if the brush cannot
* be created.
*
* NOTES
* - This function uses CreateBrushIndirect() to create the brush.
* - The brush returned should be freed by the caller using DeleteObject()
* when it is no longer required.
* - This function is for compatibility only. CreateDIBPatternBrushPt() should
* be used instead.
*/
HBRUSH WINAPI CreateDIBPatternBrush( HGLOBAL hbitmap, UINT coloruse )
{
LOGBRUSH logbrush;
TRACE("%p\n", hbitmap );
logbrush.lbStyle = BS_DIBPATTERN;
logbrush.lbColor = coloruse;
logbrush.lbHatch = (ULONG_PTR)hbitmap;
return CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreateDIBPatternBrushPt (GDI32.@)
*
* Create a logical brush with a pattern from a DIB.
*
* PARAMS
* data [I] Pointer to a BITMAPINFO structure and image data for the pattern
* coloruse [I] Specifies color format, if provided
*
* RETURNS
* A handle to the created brush, or a NULL handle if the brush cannot
* be created.
*
* NOTES
* - This function uses CreateBrushIndirect() to create the brush.
* - The brush returned should be freed by the caller using DeleteObject()
* when it is no longer required.
*/
HBRUSH WINAPI CreateDIBPatternBrushPt( const void* data, UINT coloruse )
{
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 CreateBrushIndirect( &logbrush );
}
/***********************************************************************
* CreateSolidBrush (GDI32.@)
*
* Create a logical brush consisting of a single colour.
*
* PARAMS
* color [I] Colour to make the solid brush
*
* RETURNS
* A handle to the newly created brush, or a NULL handle if the brush cannot
* be created.
*
* NOTES
* - This function uses CreateBrushIndirect() to create the brush.
* - The brush returned should be freed by the caller using DeleteObject()
* when it is no longer required.
*/
HBRUSH WINAPI CreateSolidBrush( COLORREF color )
{
LOGBRUSH logbrush;
TRACE("%06x\n", color );
logbrush.lbStyle = BS_SOLID;
logbrush.lbColor = color;
logbrush.lbHatch = 0;
return CreateBrushIndirect( &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;
}
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