471 lines
13 KiB
C
471 lines
13 KiB
C
/*
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* GDI brush objects
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*
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* Copyright 1993, 1994 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdarg.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "gdi_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(gdi);
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/* GDI logical brush object */
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typedef struct
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{
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GDIOBJHDR header;
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LOGBRUSH logbrush;
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} BRUSHOBJ;
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#define NB_HATCH_STYLES 6
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static HGDIOBJ BRUSH_SelectObject( HGDIOBJ handle, HDC hdc );
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static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer );
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static BOOL BRUSH_DeleteObject( HGDIOBJ handle );
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static const struct gdi_obj_funcs brush_funcs =
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{
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BRUSH_SelectObject, /* pSelectObject */
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BRUSH_GetObject, /* pGetObjectA */
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BRUSH_GetObject, /* pGetObjectW */
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NULL, /* pUnrealizeObject */
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BRUSH_DeleteObject /* pDeleteObject */
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};
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static HGLOBAL dib_copy(const BITMAPINFO *info, UINT coloruse)
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{
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BITMAPINFO *newInfo;
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HGLOBAL hmem;
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INT size;
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if (info->bmiHeader.biCompression != BI_RGB && info->bmiHeader.biCompression != BI_BITFIELDS)
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size = info->bmiHeader.biSizeImage;
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else
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size = DIB_GetDIBImageBytes(info->bmiHeader.biWidth,
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info->bmiHeader.biHeight,
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info->bmiHeader.biBitCount);
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size += bitmap_info_size( info, coloruse );
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if (!(hmem = GlobalAlloc( GMEM_MOVEABLE, size )))
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{
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return 0;
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}
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newInfo = GlobalLock( hmem );
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memcpy( newInfo, info, size );
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GlobalUnlock( hmem );
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return hmem;
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}
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/***********************************************************************
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* CreateBrushIndirect (GDI32.@)
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*
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* Create a logical brush with a given style, color or pattern.
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*
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* PARAMS
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* brush [I] Pointer to a LOGBRUSH structure describing the desired brush.
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot be
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* created.
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*
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* NOTES
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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* - Windows 95 and earlier cannot create brushes from bitmaps or DIBs larger
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* than 8x8 pixels. If a larger bitmap is given, only a portion of the bitmap
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* is used.
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*/
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HBRUSH WINAPI CreateBrushIndirect( const LOGBRUSH * brush )
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{
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BRUSHOBJ * ptr;
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HBRUSH hbrush;
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if (!(ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(*ptr) ))) return 0;
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ptr->logbrush.lbStyle = brush->lbStyle;
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ptr->logbrush.lbColor = brush->lbColor;
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ptr->logbrush.lbHatch = brush->lbHatch;
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switch (ptr->logbrush.lbStyle)
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{
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case BS_PATTERN8X8:
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ptr->logbrush.lbStyle = BS_PATTERN;
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/* fall through */
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case BS_PATTERN:
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ptr->logbrush.lbHatch = (ULONG_PTR)BITMAP_CopyBitmap( (HBITMAP) ptr->logbrush.lbHatch );
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if (!ptr->logbrush.lbHatch) goto error;
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break;
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case BS_DIBPATTERNPT:
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ptr->logbrush.lbStyle = BS_DIBPATTERN;
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ptr->logbrush.lbHatch = (ULONG_PTR)dib_copy( (BITMAPINFO *) ptr->logbrush.lbHatch,
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ptr->logbrush.lbColor);
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if (!ptr->logbrush.lbHatch) goto error;
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break;
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case BS_DIBPATTERN8X8:
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case BS_DIBPATTERN:
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{
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BITMAPINFO* bmi;
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HGLOBAL h = (HGLOBAL)ptr->logbrush.lbHatch;
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ptr->logbrush.lbStyle = BS_DIBPATTERN;
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if (!(bmi = GlobalLock( h ))) goto error;
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ptr->logbrush.lbHatch = (ULONG_PTR)dib_copy( bmi, ptr->logbrush.lbColor);
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GlobalUnlock( h );
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if (!ptr->logbrush.lbHatch) goto error;
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break;
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}
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default:
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if(ptr->logbrush.lbStyle > BS_MONOPATTERN) goto error;
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break;
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}
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if ((hbrush = alloc_gdi_handle( &ptr->header, OBJ_BRUSH, &brush_funcs )))
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{
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TRACE("%p\n", hbrush);
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return hbrush;
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}
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error:
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if (ptr->logbrush.lbHatch)
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{
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if (ptr->logbrush.lbStyle == BS_PATTERN)
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DeleteObject( (HGDIOBJ)ptr->logbrush.lbHatch );
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else if (ptr->logbrush.lbStyle == BS_DIBPATTERN)
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GlobalFree( (HGLOBAL)ptr->logbrush.lbHatch );
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}
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HeapFree( GetProcessHeap(), 0, ptr );
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return 0;
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}
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/***********************************************************************
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* CreateHatchBrush (GDI32.@)
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*
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* Create a logical brush with a hatched pattern.
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*
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* PARAMS
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* style [I] Direction of lines for the hatch pattern (HS_* values from "wingdi.h")
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* color [I] Colour of the hatched pattern
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreateHatchBrush( INT style, COLORREF color )
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{
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LOGBRUSH logbrush;
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TRACE("%d %06x\n", style, color );
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logbrush.lbStyle = BS_HATCHED;
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logbrush.lbColor = color;
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logbrush.lbHatch = style;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreatePatternBrush (GDI32.@)
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*
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* Create a logical brush with a pattern from a bitmap.
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*
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* PARAMS
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* hbitmap [I] Bitmap containing pattern for the brush
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreatePatternBrush( HBITMAP hbitmap )
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{
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LOGBRUSH logbrush = { BS_PATTERN, 0, 0 };
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TRACE("%p\n", hbitmap );
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logbrush.lbHatch = (ULONG_PTR)hbitmap;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreateDIBPatternBrush (GDI32.@)
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*
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* Create a logical brush with a pattern from a DIB.
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*
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* PARAMS
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* hbitmap [I] Global object containing BITMAPINFO structure for the pattern
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* coloruse [I] Specifies color format, if provided
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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* - This function is for compatibility only. CreateDIBPatternBrushPt() should
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* be used instead.
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*/
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HBRUSH WINAPI CreateDIBPatternBrush( HGLOBAL hbitmap, UINT coloruse )
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{
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LOGBRUSH logbrush;
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TRACE("%p\n", hbitmap );
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logbrush.lbStyle = BS_DIBPATTERN;
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logbrush.lbColor = coloruse;
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logbrush.lbHatch = (ULONG_PTR)hbitmap;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreateDIBPatternBrushPt (GDI32.@)
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*
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* Create a logical brush with a pattern from a DIB.
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*
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* PARAMS
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* data [I] Pointer to a BITMAPINFO structure and image data for the pattern
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* coloruse [I] Specifies color format, if provided
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*
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* RETURNS
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* A handle to the created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreateDIBPatternBrushPt( const void* data, UINT coloruse )
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{
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const BITMAPINFO *info=data;
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LOGBRUSH logbrush;
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if (!data)
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return NULL;
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TRACE("%p %dx%d %dbpp\n", info, info->bmiHeader.biWidth,
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info->bmiHeader.biHeight, info->bmiHeader.biBitCount);
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logbrush.lbStyle = BS_DIBPATTERNPT;
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logbrush.lbColor = coloruse;
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logbrush.lbHatch = (ULONG_PTR)data;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* CreateSolidBrush (GDI32.@)
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*
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* Create a logical brush consisting of a single colour.
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*
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* PARAMS
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* color [I] Colour to make the solid brush
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*
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* RETURNS
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* A handle to the newly created brush, or a NULL handle if the brush cannot
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* be created.
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*
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* NOTES
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* - This function uses CreateBrushIndirect() to create the brush.
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* - The brush returned should be freed by the caller using DeleteObject()
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* when it is no longer required.
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*/
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HBRUSH WINAPI CreateSolidBrush( COLORREF color )
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{
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LOGBRUSH logbrush;
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TRACE("%06x\n", color );
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logbrush.lbStyle = BS_SOLID;
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logbrush.lbColor = color;
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logbrush.lbHatch = 0;
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return CreateBrushIndirect( &logbrush );
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}
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/***********************************************************************
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* SetBrushOrgEx (GDI32.@)
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*
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* Set the brush origin for a device context.
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*
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* PARAMS
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* hdc [I] Device context to set the brush origin for
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* x [I] New x origin
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* y [I] Ney y origin
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* oldorg [O] If non NULL, destination for previously set brush origin.
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*
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* RETURNS
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* Success: TRUE. The origin is set to (x,y), and oldorg is updated if given.
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*/
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BOOL WINAPI SetBrushOrgEx( HDC hdc, INT x, INT y, LPPOINT oldorg )
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{
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DC *dc = get_dc_ptr( hdc );
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if (!dc) return FALSE;
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if (oldorg)
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{
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oldorg->x = dc->brushOrgX;
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oldorg->y = dc->brushOrgY;
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}
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dc->brushOrgX = x;
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dc->brushOrgY = y;
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release_dc_ptr( dc );
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return TRUE;
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}
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/***********************************************************************
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* FixBrushOrgEx (GDI32.@)
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*
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* See SetBrushOrgEx.
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*
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* NOTES
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* This function is no longer documented by MSDN, but in Win95 GDI32 it
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* is the same as SetBrushOrgEx().
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*/
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BOOL WINAPI FixBrushOrgEx( HDC hdc, INT x, INT y, LPPOINT oldorg )
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{
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return SetBrushOrgEx(hdc,x,y,oldorg);
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}
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/***********************************************************************
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* BRUSH_SelectObject
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*/
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static HGDIOBJ BRUSH_SelectObject( HGDIOBJ handle, HDC hdc )
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{
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BRUSHOBJ *brush;
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HGDIOBJ ret = 0;
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DC *dc = get_dc_ptr( hdc );
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if (!dc)
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{
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SetLastError( ERROR_INVALID_HANDLE );
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return 0;
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}
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if ((brush = GDI_GetObjPtr( handle, OBJ_BRUSH )))
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{
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if (brush->logbrush.lbStyle == BS_PATTERN)
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BITMAP_SetOwnerDC( (HBITMAP)brush->logbrush.lbHatch, dc );
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GDI_inc_ref_count( handle );
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GDI_ReleaseObj( handle );
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if (dc->funcs->pSelectBrush && !dc->funcs->pSelectBrush( dc->physDev, handle ))
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{
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GDI_dec_ref_count( handle );
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}
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else
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{
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ret = dc->hBrush;
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dc->hBrush = handle;
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GDI_dec_ref_count( ret );
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}
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}
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release_dc_ptr( dc );
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return ret;
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}
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/***********************************************************************
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* BRUSH_DeleteObject
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*/
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static BOOL BRUSH_DeleteObject( HGDIOBJ handle )
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{
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BRUSHOBJ *brush = free_gdi_handle( handle );
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if (!brush) return FALSE;
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switch(brush->logbrush.lbStyle)
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{
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case BS_PATTERN:
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DeleteObject( (HGDIOBJ)brush->logbrush.lbHatch );
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break;
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case BS_DIBPATTERN:
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GlobalFree( (HGLOBAL)brush->logbrush.lbHatch );
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break;
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}
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return HeapFree( GetProcessHeap(), 0, brush );
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}
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/***********************************************************************
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* BRUSH_GetObject
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*/
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static INT BRUSH_GetObject( HGDIOBJ handle, INT count, LPVOID buffer )
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{
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BRUSHOBJ *brush = GDI_GetObjPtr( handle, OBJ_BRUSH );
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if (!brush) return 0;
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if (buffer)
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{
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if (count > sizeof(brush->logbrush)) count = sizeof(brush->logbrush);
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memcpy( buffer, &brush->logbrush, count );
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}
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else count = sizeof(brush->logbrush);
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GDI_ReleaseObj( handle );
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return count;
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}
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/***********************************************************************
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* BRUSH_SetSolid
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*/
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BOOL BRUSH_SetSolid( HGDIOBJ handle, COLORREF new_color )
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{
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BRUSHOBJ * brushPtr;
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BOOL res = FALSE;
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if (!(brushPtr = GDI_GetObjPtr( handle, OBJ_BRUSH )))
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return FALSE;
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if (brushPtr->logbrush.lbStyle == BS_SOLID)
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{
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brushPtr->logbrush.lbColor = new_color;
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res = TRUE;
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}
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GDI_ReleaseObj( handle );
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return res;
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}
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