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wine/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 "config.h"
#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "gdi_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(gdi);
/* GDI logical brush object */
typedef struct
{
GDIOBJHDR header;
LOGBRUSH logbrush;
} BRUSHOBJ;
#define NB_HATCH_STYLES 6
static HGDIOBJ BRUSH_SelectObject( HGDIOBJ handle, HDC hdc );
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_SelectObject, /* pSelectObject */
BRUSH_GetObject, /* pGetObjectA */
BRUSH_GetObject, /* pGetObjectW */
NULL, /* pUnrealizeObject */
BRUSH_DeleteObject /* pDeleteObject */
};
static HGLOBAL dib_copy(const BITMAPINFO *info, UINT coloruse)
{
BITMAPINFO *newInfo;
HGLOBAL hmem;
INT size;
if (info->bmiHeader.biCompression != BI_RGB && info->bmiHeader.biCompression != BI_BITFIELDS)
size = info->bmiHeader.biSizeImage;
else
size = DIB_GetDIBImageBytes(info->bmiHeader.biWidth,
info->bmiHeader.biHeight,
info->bmiHeader.biBitCount);
size += bitmap_info_size( info, coloruse );
if (!(hmem = GlobalAlloc( GMEM_MOVEABLE, size )))
{
return 0;
}
newInfo = GlobalLock( hmem );
memcpy( newInfo, info, size );
GlobalUnlock( hmem );
return hmem;
}
/***********************************************************************
* 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.lbStyle = brush->lbStyle;
ptr->logbrush.lbColor = brush->lbColor;
ptr->logbrush.lbHatch = brush->lbHatch;
switch (ptr->logbrush.lbStyle)
{
case BS_PATTERN8X8:
ptr->logbrush.lbStyle = BS_PATTERN;
/* fall through */
case BS_PATTERN:
ptr->logbrush.lbHatch = (ULONG_PTR)BITMAP_CopyBitmap( (HBITMAP) ptr->logbrush.lbHatch );
if (!ptr->logbrush.lbHatch) goto error;
break;
case BS_DIBPATTERNPT:
ptr->logbrush.lbStyle = BS_DIBPATTERN;
ptr->logbrush.lbHatch = (ULONG_PTR)dib_copy( (BITMAPINFO *) ptr->logbrush.lbHatch,
ptr->logbrush.lbColor);
if (!ptr->logbrush.lbHatch) goto error;
break;
case BS_DIBPATTERN8X8:
case BS_DIBPATTERN:
{
BITMAPINFO* bmi;
HGLOBAL h = (HGLOBAL)ptr->logbrush.lbHatch;
ptr->logbrush.lbStyle = BS_DIBPATTERN;
if (!(bmi = GlobalLock( h ))) goto error;
ptr->logbrush.lbHatch = (ULONG_PTR)dib_copy( bmi, ptr->logbrush.lbColor);
GlobalUnlock( h );
if (!ptr->logbrush.lbHatch) goto error;
break;
}
default:
if(ptr->logbrush.lbStyle > BS_MONOPATTERN) goto error;
break;
}
if ((hbrush = alloc_gdi_handle( &ptr->header, OBJ_BRUSH, &brush_funcs )))
{
TRACE("%p\n", hbrush);
return hbrush;
}
error:
if (ptr->logbrush.lbHatch)
{
if (ptr->logbrush.lbStyle == BS_PATTERN)
DeleteObject( (HGDIOBJ)ptr->logbrush.lbHatch );
else if (ptr->logbrush.lbStyle == BS_DIBPATTERN)
GlobalFree( (HGLOBAL)ptr->logbrush.lbHatch );
}
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 );
}
/***********************************************************************
* SetBrushOrgEx (GDI32.@)
*
* Set the brush origin for a device context.
*
* PARAMS
* hdc [I] Device context to set the brush origin for
* x [I] New x origin
* y [I] Ney y origin
* oldorg [O] If non NULL, destination for previously set brush origin.
*
* RETURNS
* Success: TRUE. The origin is set to (x,y), and oldorg is updated if given.
*/
BOOL WINAPI SetBrushOrgEx( HDC hdc, INT x, INT y, LPPOINT oldorg )
{
DC *dc = get_dc_ptr( hdc );
if (!dc) return FALSE;
if (oldorg)
{
oldorg->x = dc->brushOrgX;
oldorg->y = dc->brushOrgY;
}
dc->brushOrgX = x;
dc->brushOrgY = y;
release_dc_ptr( dc );
return TRUE;
}
/***********************************************************************
* FixBrushOrgEx (GDI32.@)
*
* See SetBrushOrgEx.
*
* NOTES
* This function is no longer documented by MSDN, but in Win95 GDI32 it
* is the same as SetBrushOrgEx().
*/
BOOL WINAPI FixBrushOrgEx( HDC hdc, INT x, INT y, LPPOINT oldorg )
{
return SetBrushOrgEx(hdc,x,y,oldorg);
}
/***********************************************************************
* BRUSH_SelectObject
*/
static HGDIOBJ BRUSH_SelectObject( HGDIOBJ handle, HDC hdc )
{
BRUSHOBJ *brush;
HGDIOBJ ret = 0;
DC *dc = get_dc_ptr( hdc );
if (!dc)
{
SetLastError( ERROR_INVALID_HANDLE );
return 0;
}
if ((brush = GDI_GetObjPtr( handle, OBJ_BRUSH )))
{
if (brush->logbrush.lbStyle == BS_PATTERN)
BITMAP_SetOwnerDC( (HBITMAP)brush->logbrush.lbHatch, dc );
GDI_inc_ref_count( handle );
GDI_ReleaseObj( handle );
if (dc->funcs->pSelectBrush && !dc->funcs->pSelectBrush( dc->physDev, handle ))
{
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;
switch(brush->logbrush.lbStyle)
{
case BS_PATTERN:
DeleteObject( (HGDIOBJ)brush->logbrush.lbHatch );
break;
case BS_DIBPATTERN:
GlobalFree( (HGLOBAL)brush->logbrush.lbHatch );
break;
}
return HeapFree( GetProcessHeap(), 0, brush );
}
/***********************************************************************
* BRUSH_GetObject
*/
static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer )
{
BRUSHOBJ *brush = GDI_GetObjPtr( handle, 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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