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