| /* |
| * GDI bit-blit operations |
| * |
| * 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 <limits.h> |
| #include <math.h> |
| #ifdef HAVE_FLOAT_H |
| #include <float.h> |
| #endif |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "wingdi.h" |
| #include "gdi_private.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(bitblt); |
| |
| static inline BOOL rop_uses_src( DWORD rop ) |
| { |
| return ((rop >> 2) & 0x330000) != (rop & 0x330000); |
| } |
| |
| static inline void swap_ints( int *i, int *j ) |
| { |
| int tmp = *i; |
| *i = *j; |
| *j = tmp; |
| } |
| |
| BOOL intersect_vis_rectangles( struct bitblt_coords *dst, struct bitblt_coords *src ) |
| { |
| RECT rect; |
| |
| /* intersect the rectangles */ |
| |
| if ((src->width == dst->width) && (src->height == dst->height)) /* no stretching */ |
| { |
| offset_rect( &src->visrect, dst->x - src->x, dst->y - src->y ); |
| if (!intersect_rect( &rect, &src->visrect, &dst->visrect )) return FALSE; |
| src->visrect = dst->visrect = rect; |
| offset_rect( &src->visrect, src->x - dst->x, src->y - dst->y ); |
| } |
| else /* stretching */ |
| { |
| /* map source rectangle into destination coordinates */ |
| rect = src->visrect; |
| offset_rect( &rect, -min( src->x, src->x + src->width + 1), |
| -min( src->y, src->y + src->height + 1) ); |
| rect.left = dst->x + rect.left * dst->width / abs(src->width); |
| rect.top = dst->y + rect.top * dst->height / abs(src->height); |
| rect.right = dst->x + rect.right * dst->width / abs(src->width); |
| rect.bottom = dst->y + rect.bottom * dst->height / abs(src->height); |
| if (rect.left > rect.right) swap_ints( &rect.left, &rect.right ); |
| if (rect.top > rect.bottom) swap_ints( &rect.top, &rect.bottom ); |
| |
| /* avoid rounding errors */ |
| rect.left--; |
| rect.top--; |
| rect.right++; |
| rect.bottom++; |
| if (!intersect_rect( &dst->visrect, &rect, &dst->visrect )) return FALSE; |
| |
| /* map destination rectangle back to source coordinates */ |
| rect = dst->visrect; |
| offset_rect( &rect, -min( dst->x, dst->x + dst->width + 1), |
| -min( dst->y, dst->y + dst->height + 1) ); |
| rect.left = src->x + rect.left * src->width / abs(dst->width); |
| rect.top = src->y + rect.top * src->height / abs(dst->height); |
| rect.right = src->x + rect.right * src->width / abs(dst->width); |
| rect.bottom = src->y + rect.bottom * src->height / abs(dst->height); |
| if (rect.left > rect.right) swap_ints( &rect.left, &rect.right ); |
| if (rect.top > rect.bottom) swap_ints( &rect.top, &rect.bottom ); |
| |
| /* avoid rounding errors */ |
| rect.left--; |
| rect.top--; |
| rect.right++; |
| rect.bottom++; |
| if (!intersect_rect( &src->visrect, &rect, &src->visrect )) return FALSE; |
| } |
| return TRUE; |
| } |
| |
| static BOOL get_vis_rectangles( DC *dc_dst, struct bitblt_coords *dst, |
| DC *dc_src, struct bitblt_coords *src ) |
| { |
| RECT rect; |
| |
| /* get the destination visible rectangle */ |
| |
| rect.left = dst->log_x; |
| rect.top = dst->log_y; |
| rect.right = dst->log_x + dst->log_width; |
| rect.bottom = dst->log_y + dst->log_height; |
| LPtoDP( dc_dst->hSelf, (POINT *)&rect, 2 ); |
| dst->x = rect.left; |
| dst->y = rect.top; |
| dst->width = rect.right - rect.left; |
| dst->height = rect.bottom - rect.top; |
| if (dst->layout & LAYOUT_RTL && dst->layout & LAYOUT_BITMAPORIENTATIONPRESERVED) |
| { |
| dst->x += dst->width; |
| dst->width = -dst->width; |
| } |
| get_bounding_rect( &rect, dst->x, dst->y, dst->width, dst->height ); |
| |
| clip_visrect( dc_dst, &dst->visrect, &rect ); |
| |
| /* get the source visible rectangle */ |
| |
| if (!src) return !is_rect_empty( &dst->visrect ); |
| |
| rect.left = src->log_x; |
| rect.top = src->log_y; |
| rect.right = src->log_x + src->log_width; |
| rect.bottom = src->log_y + src->log_height; |
| LPtoDP( dc_src->hSelf, (POINT *)&rect, 2 ); |
| src->x = rect.left; |
| src->y = rect.top; |
| src->width = rect.right - rect.left; |
| src->height = rect.bottom - rect.top; |
| if (src->layout & LAYOUT_RTL && src->layout & LAYOUT_BITMAPORIENTATIONPRESERVED) |
| { |
| src->x += src->width; |
| src->width = -src->width; |
| } |
| get_bounding_rect( &rect, src->x, src->y, src->width, src->height ); |
| |
| if (!clip_device_rect( dc_src, &src->visrect, &rect )) return FALSE; |
| if (is_rect_empty( &dst->visrect )) return FALSE; |
| |
| return intersect_vis_rectangles( dst, src ); |
| } |
| |
| void free_heap_bits( struct gdi_image_bits *bits ) |
| { |
| HeapFree( GetProcessHeap(), 0, bits->ptr ); |
| } |
| |
| DWORD convert_bits( const BITMAPINFO *src_info, struct bitblt_coords *src, |
| BITMAPINFO *dst_info, struct gdi_image_bits *bits ) |
| { |
| void *ptr; |
| DWORD err; |
| BOOL top_down = dst_info->bmiHeader.biHeight < 0; |
| |
| dst_info->bmiHeader.biWidth = src->visrect.right - src->visrect.left; |
| dst_info->bmiHeader.biHeight = src->visrect.bottom - src->visrect.top; |
| dst_info->bmiHeader.biSizeImage = get_dib_image_size( dst_info ); |
| if (top_down) dst_info->bmiHeader.biHeight = -dst_info->bmiHeader.biHeight; |
| |
| if (!(ptr = HeapAlloc( GetProcessHeap(), 0, dst_info->bmiHeader.biSizeImage ))) |
| return ERROR_OUTOFMEMORY; |
| |
| err = convert_bitmapinfo( src_info, bits->ptr, src, dst_info, ptr ); |
| if (bits->free) bits->free( bits ); |
| bits->ptr = ptr; |
| bits->is_copy = TRUE; |
| bits->free = free_heap_bits; |
| return err; |
| } |
| |
| DWORD stretch_bits( const BITMAPINFO *src_info, struct bitblt_coords *src, |
| BITMAPINFO *dst_info, struct bitblt_coords *dst, |
| struct gdi_image_bits *bits, int mode ) |
| { |
| void *ptr; |
| DWORD err; |
| |
| dst_info->bmiHeader.biWidth = dst->visrect.right - dst->visrect.left; |
| dst_info->bmiHeader.biHeight = dst->visrect.bottom - dst->visrect.top; |
| dst_info->bmiHeader.biSizeImage = get_dib_image_size( dst_info ); |
| |
| if (src_info->bmiHeader.biHeight < 0) dst_info->bmiHeader.biHeight = -dst_info->bmiHeader.biHeight; |
| if (!(ptr = HeapAlloc( GetProcessHeap(), 0, dst_info->bmiHeader.biSizeImage ))) |
| return ERROR_OUTOFMEMORY; |
| |
| err = stretch_bitmapinfo( src_info, bits->ptr, src, dst_info, ptr, dst, mode ); |
| if (bits->free) bits->free( bits ); |
| bits->ptr = ptr; |
| bits->is_copy = TRUE; |
| bits->free = free_heap_bits; |
| return err; |
| } |
| |
| static DWORD blend_bits( const BITMAPINFO *src_info, const struct gdi_image_bits *src_bits, |
| struct bitblt_coords *src, BITMAPINFO *dst_info, |
| struct gdi_image_bits *dst_bits, struct bitblt_coords *dst, BLENDFUNCTION blend ) |
| { |
| if (!dst_bits->is_copy) |
| { |
| int size = dst_info->bmiHeader.biSizeImage; |
| void *ptr = HeapAlloc( GetProcessHeap(), 0, size ); |
| if (!ptr) return ERROR_OUTOFMEMORY; |
| memcpy( ptr, dst_bits->ptr, size ); |
| if (dst_bits->free) dst_bits->free( dst_bits ); |
| dst_bits->ptr = ptr; |
| dst_bits->is_copy = TRUE; |
| dst_bits->free = free_heap_bits; |
| } |
| return blend_bitmapinfo( src_info, src_bits->ptr, src, dst_info, dst_bits->ptr, dst, blend ); |
| } |
| |
| /* helper to retrieve either both colors or only the background color for monochrome blits */ |
| static void get_mono_dc_colors( HDC hdc, BITMAPINFO *info, int count ) |
| { |
| COLORREF color = GetBkColor( hdc ); |
| |
| info->bmiColors[count - 1].rgbRed = GetRValue( color ); |
| info->bmiColors[count - 1].rgbGreen = GetGValue( color ); |
| info->bmiColors[count - 1].rgbBlue = GetBValue( color ); |
| info->bmiColors[count - 1].rgbReserved = 0; |
| |
| if (count > 1) |
| { |
| color = GetTextColor( hdc ); |
| info->bmiColors[0].rgbRed = GetRValue( color ); |
| info->bmiColors[0].rgbGreen = GetGValue( color ); |
| info->bmiColors[0].rgbBlue = GetBValue( color ); |
| info->bmiColors[0].rgbReserved = 0; |
| } |
| info->bmiHeader.biClrUsed = count; |
| } |
| |
| /*********************************************************************** |
| * null driver fallback implementations |
| */ |
| |
| BOOL nulldrv_StretchBlt( PHYSDEV dst_dev, struct bitblt_coords *dst, |
| PHYSDEV src_dev, struct bitblt_coords *src, DWORD rop ) |
| { |
| DC *dc_src, *dc_dst = get_nulldrv_dc( dst_dev ); |
| char src_buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| char dst_buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| BITMAPINFO *src_info = (BITMAPINFO *)src_buffer; |
| BITMAPINFO *dst_info = (BITMAPINFO *)dst_buffer; |
| DWORD err; |
| struct gdi_image_bits bits; |
| |
| if (!(dc_src = get_dc_ptr( src_dev->hdc ))) return FALSE; |
| src_dev = GET_DC_PHYSDEV( dc_src, pGetImage ); |
| if (src_dev->funcs->pGetImage( src_dev, src_info, &bits, src )) |
| { |
| release_dc_ptr( dc_src ); |
| return FALSE; |
| } |
| |
| dst_dev = GET_DC_PHYSDEV( dc_dst, pPutImage ); |
| copy_bitmapinfo( dst_info, src_info ); |
| err = dst_dev->funcs->pPutImage( dst_dev, 0, dst_info, &bits, src, dst, rop ); |
| if (err == ERROR_BAD_FORMAT) |
| { |
| DWORD dst_colors = dst_info->bmiHeader.biClrUsed; |
| |
| /* 1-bpp source without a color table uses the destination DC colors */ |
| if (src_info->bmiHeader.biBitCount == 1 && !src_info->bmiHeader.biClrUsed) |
| get_mono_dc_colors( dst_dev->hdc, src_info, 2 ); |
| |
| if (dst_info->bmiHeader.biBitCount == 1 && !dst_colors) |
| { |
| /* 1-bpp destination without a color table requires a fake 1-entry table |
| * that contains only the background color; except with a 1-bpp source, |
| * in which case it uses the source colors */ |
| if (src_info->bmiHeader.biBitCount > 1) |
| get_mono_dc_colors( src_dev->hdc, dst_info, 1 ); |
| else |
| get_mono_dc_colors( src_dev->hdc, dst_info, 2 ); |
| } |
| |
| if (!(err = convert_bits( src_info, src, dst_info, &bits ))) |
| { |
| /* get rid of the fake destination table */ |
| dst_info->bmiHeader.biClrUsed = dst_colors; |
| err = dst_dev->funcs->pPutImage( dst_dev, 0, dst_info, &bits, src, dst, rop ); |
| } |
| } |
| |
| if (err == ERROR_TRANSFORM_NOT_SUPPORTED && |
| ((src->width != dst->width) || (src->height != dst->height))) |
| { |
| copy_bitmapinfo( src_info, dst_info ); |
| err = stretch_bits( src_info, src, dst_info, dst, &bits, GetStretchBltMode( dst_dev->hdc )); |
| if (!err) err = dst_dev->funcs->pPutImage( dst_dev, 0, dst_info, &bits, src, dst, rop ); |
| } |
| |
| if (bits.free) bits.free( &bits ); |
| release_dc_ptr( dc_src ); |
| return !err; |
| } |
| |
| |
| BOOL nulldrv_AlphaBlend( PHYSDEV dst_dev, struct bitblt_coords *dst, |
| PHYSDEV src_dev, struct bitblt_coords *src, BLENDFUNCTION func ) |
| { |
| DC *dc_src, *dc_dst = get_nulldrv_dc( dst_dev ); |
| char src_buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| char dst_buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| BITMAPINFO *src_info = (BITMAPINFO *)src_buffer; |
| BITMAPINFO *dst_info = (BITMAPINFO *)dst_buffer; |
| DWORD err; |
| struct gdi_image_bits bits; |
| |
| if (!(dc_src = get_dc_ptr( src_dev->hdc ))) return FALSE; |
| src_dev = GET_DC_PHYSDEV( dc_src, pGetImage ); |
| err = src_dev->funcs->pGetImage( src_dev, src_info, &bits, src ); |
| if (err) goto done; |
| |
| dst_dev = GET_DC_PHYSDEV( dc_dst, pBlendImage ); |
| copy_bitmapinfo( dst_info, src_info ); |
| err = dst_dev->funcs->pBlendImage( dst_dev, dst_info, &bits, src, dst, func ); |
| if (err == ERROR_BAD_FORMAT) |
| { |
| err = convert_bits( src_info, src, dst_info, &bits ); |
| if (!err) err = dst_dev->funcs->pBlendImage( dst_dev, dst_info, &bits, src, dst, func ); |
| } |
| |
| if (err == ERROR_TRANSFORM_NOT_SUPPORTED && |
| ((src->width != dst->width) || (src->height != dst->height))) |
| { |
| copy_bitmapinfo( src_info, dst_info ); |
| err = stretch_bits( src_info, src, dst_info, dst, &bits, COLORONCOLOR ); |
| if (!err) err = dst_dev->funcs->pBlendImage( dst_dev, dst_info, &bits, src, dst, func ); |
| } |
| |
| if (bits.free) bits.free( &bits ); |
| done: |
| release_dc_ptr( dc_src ); |
| if (err) SetLastError( err ); |
| return !err; |
| } |
| |
| |
| DWORD nulldrv_BlendImage( PHYSDEV dev, BITMAPINFO *info, const struct gdi_image_bits *bits, |
| struct bitblt_coords *src, struct bitblt_coords *dst, BLENDFUNCTION blend ) |
| { |
| char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| BITMAPINFO *dst_info = (BITMAPINFO *)buffer; |
| struct gdi_image_bits dst_bits; |
| struct bitblt_coords orig_dst; |
| DWORD *masks = (DWORD *)info->bmiColors; |
| DC *dc = get_nulldrv_dc( dev ); |
| DWORD err; |
| |
| if (info->bmiHeader.biPlanes != 1) goto update_format; |
| if (info->bmiHeader.biBitCount != 32) goto update_format; |
| if (info->bmiHeader.biCompression == BI_BITFIELDS) |
| { |
| if (blend.AlphaFormat & AC_SRC_ALPHA) return ERROR_INVALID_PARAMETER; |
| if (masks[0] != 0xff0000 || masks[1] != 0x00ff00 || masks[2] != 0x0000ff) |
| goto update_format; |
| } |
| |
| if (!bits) return ERROR_SUCCESS; |
| if ((src->width != dst->width) || (src->height != dst->height)) return ERROR_TRANSFORM_NOT_SUPPORTED; |
| |
| dev = GET_DC_PHYSDEV( dc, pGetImage ); |
| orig_dst = *dst; |
| err = dev->funcs->pGetImage( dev, dst_info, &dst_bits, dst ); |
| if (err) return err; |
| |
| dev = GET_DC_PHYSDEV( dc, pPutImage ); |
| err = blend_bits( info, bits, src, dst_info, &dst_bits, dst, blend ); |
| if (!err) err = dev->funcs->pPutImage( dev, 0, dst_info, &dst_bits, dst, &orig_dst, SRCCOPY ); |
| |
| if (dst_bits.free) dst_bits.free( &dst_bits ); |
| return err; |
| |
| update_format: |
| if (blend.AlphaFormat & AC_SRC_ALPHA) /* source alpha requires A8R8G8B8 format */ |
| return ERROR_INVALID_PARAMETER; |
| |
| info->bmiHeader.biPlanes = 1; |
| info->bmiHeader.biBitCount = 32; |
| info->bmiHeader.biCompression = BI_BITFIELDS; |
| info->bmiHeader.biClrUsed = 0; |
| masks[0] = 0xff0000; |
| masks[1] = 0x00ff00; |
| masks[2] = 0x0000ff; |
| return ERROR_BAD_FORMAT; |
| } |
| |
| BOOL nulldrv_GradientFill( PHYSDEV dev, TRIVERTEX *vert_array, ULONG nvert, |
| void * grad_array, ULONG ngrad, ULONG mode ) |
| { |
| DC *dc = get_nulldrv_dc( dev ); |
| char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| BITMAPINFO *info = (BITMAPINFO *)buffer; |
| struct bitblt_coords src, dst; |
| struct gdi_image_bits bits; |
| unsigned int i; |
| POINT *pts; |
| BOOL ret = FALSE; |
| DWORD err; |
| HRGN rgn; |
| |
| if (!(pts = HeapAlloc( GetProcessHeap(), 0, nvert * sizeof(*pts) ))) return FALSE; |
| for (i = 0; i < nvert; i++) |
| { |
| pts[i].x = vert_array[i].x; |
| pts[i].y = vert_array[i].y; |
| } |
| LPtoDP( dev->hdc, pts, nvert ); |
| |
| /* compute bounding rect of all the rectangles/triangles */ |
| reset_bounds( &dst.visrect ); |
| for (i = 0; i < ngrad * (mode == GRADIENT_FILL_TRIANGLE ? 3 : 2); i++) |
| { |
| ULONG v = ((ULONG *)grad_array)[i]; |
| dst.visrect.left = min( dst.visrect.left, pts[v].x ); |
| dst.visrect.top = min( dst.visrect.top, pts[v].y ); |
| dst.visrect.right = max( dst.visrect.right, pts[v].x ); |
| dst.visrect.bottom = max( dst.visrect.bottom, pts[v].y ); |
| } |
| |
| dst.x = dst.visrect.left; |
| dst.y = dst.visrect.top; |
| dst.width = dst.visrect.right - dst.visrect.left; |
| dst.height = dst.visrect.bottom - dst.visrect.top; |
| if (!clip_visrect( dc, &dst.visrect, &dst.visrect )) goto done; |
| |
| /* query the bitmap format */ |
| info->bmiHeader.biSize = sizeof(info->bmiHeader); |
| info->bmiHeader.biPlanes = 1; |
| info->bmiHeader.biBitCount = 0; |
| info->bmiHeader.biCompression = BI_RGB; |
| info->bmiHeader.biXPelsPerMeter = 0; |
| info->bmiHeader.biYPelsPerMeter = 0; |
| info->bmiHeader.biClrUsed = 0; |
| info->bmiHeader.biClrImportant = 0; |
| info->bmiHeader.biWidth = dst.visrect.right - dst.visrect.left; |
| info->bmiHeader.biHeight = dst.visrect.bottom - dst.visrect.top; |
| info->bmiHeader.biSizeImage = 0; |
| dev = GET_DC_PHYSDEV( dc, pPutImage ); |
| err = dev->funcs->pPutImage( dev, 0, info, NULL, NULL, NULL, 0 ); |
| if (err && err != ERROR_BAD_FORMAT) goto done; |
| |
| info->bmiHeader.biSizeImage = get_dib_image_size( info ); |
| if (!(bits.ptr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, info->bmiHeader.biSizeImage ))) |
| goto done; |
| bits.is_copy = TRUE; |
| bits.free = free_heap_bits; |
| |
| /* make src and points relative to the bitmap */ |
| src = dst; |
| src.x -= dst.visrect.left; |
| src.y -= dst.visrect.top; |
| offset_rect( &src.visrect, -dst.visrect.left, -dst.visrect.top ); |
| for (i = 0; i < nvert; i++) |
| { |
| pts[i].x -= dst.visrect.left; |
| pts[i].y -= dst.visrect.top; |
| } |
| |
| rgn = CreateRectRgn( 0, 0, 0, 0 ); |
| gradient_bitmapinfo( info, bits.ptr, vert_array, nvert, grad_array, ngrad, mode, pts, rgn ); |
| OffsetRgn( rgn, dst.visrect.left, dst.visrect.top ); |
| ret = !dev->funcs->pPutImage( dev, rgn, info, &bits, &src, &dst, SRCCOPY ); |
| |
| if (bits.free) bits.free( &bits ); |
| DeleteObject( rgn ); |
| |
| done: |
| HeapFree( GetProcessHeap(), 0, pts ); |
| return ret; |
| } |
| |
| COLORREF nulldrv_GetPixel( PHYSDEV dev, INT x, INT y ) |
| { |
| DC *dc = get_nulldrv_dc( dev ); |
| char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )]; |
| BITMAPINFO *info = (BITMAPINFO *)buffer; |
| struct bitblt_coords src; |
| struct gdi_image_bits bits; |
| COLORREF ret; |
| |
| src.visrect.left = x; |
| src.visrect.top = y; |
| LPtoDP( dev->hdc, (POINT *)&src.visrect, 1 ); |
| src.visrect.right = src.visrect.left + 1; |
| src.visrect.bottom = src.visrect.top + 1; |
| src.x = src.visrect.left; |
| src.y = src.visrect.top; |
| src.width = src.height = 1; |
| |
| if (!clip_visrect( dc, &src.visrect, &src.visrect )) return CLR_INVALID; |
| |
| dev = GET_DC_PHYSDEV( dc, pGetImage ); |
| if (dev->funcs->pGetImage( dev, info, &bits, &src )) return CLR_INVALID; |
| |
| ret = get_pixel_bitmapinfo( info, bits.ptr, &src ); |
| if (bits.free) bits.free( &bits ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * PatBlt (GDI32.@) |
| */ |
| BOOL WINAPI PatBlt( HDC hdc, INT left, INT top, INT width, INT height, DWORD rop) |
| { |
| DC * dc; |
| BOOL ret = FALSE; |
| |
| if (rop_uses_src( rop )) return FALSE; |
| if ((dc = get_dc_ptr( hdc ))) |
| { |
| struct bitblt_coords dst; |
| |
| update_dc( dc ); |
| |
| dst.log_x = left; |
| dst.log_y = top; |
| dst.log_width = width; |
| dst.log_height = height; |
| dst.layout = dc->layout; |
| if (rop & NOMIRRORBITMAP) |
| { |
| dst.layout |= LAYOUT_BITMAPORIENTATIONPRESERVED; |
| rop &= ~NOMIRRORBITMAP; |
| } |
| ret = !get_vis_rectangles( dc, &dst, NULL, NULL ); |
| |
| TRACE("dst %p log=%d,%d %dx%d phys=%d,%d %dx%d vis=%s rop=%06x\n", |
| hdc, dst.log_x, dst.log_y, dst.log_width, dst.log_height, |
| dst.x, dst.y, dst.width, dst.height, wine_dbgstr_rect(&dst.visrect), rop ); |
| |
| if (!ret) |
| { |
| PHYSDEV physdev = GET_DC_PHYSDEV( dc, pPatBlt ); |
| ret = physdev->funcs->pPatBlt( physdev, &dst, rop ); |
| } |
| release_dc_ptr( dc ); |
| } |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * BitBlt (GDI32.@) |
| */ |
| BOOL WINAPI BitBlt( HDC hdcDst, INT xDst, INT yDst, INT width, |
| INT height, HDC hdcSrc, INT xSrc, INT ySrc, DWORD rop ) |
| { |
| if (!rop_uses_src( rop )) return PatBlt( hdcDst, xDst, yDst, width, height, rop ); |
| else return StretchBlt( hdcDst, xDst, yDst, width, height, |
| hdcSrc, xSrc, ySrc, width, height, rop ); |
| } |
| |
| |
| /*********************************************************************** |
| * StretchBlt (GDI32.@) |
| */ |
| BOOL WINAPI StretchBlt( HDC hdcDst, INT xDst, INT yDst, INT widthDst, INT heightDst, |
| HDC hdcSrc, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, DWORD rop ) |
| { |
| BOOL ret = FALSE; |
| DC *dcDst, *dcSrc; |
| |
| if (!rop_uses_src( rop )) return PatBlt( hdcDst, xDst, yDst, widthDst, heightDst, rop ); |
| |
| if (!(dcDst = get_dc_ptr( hdcDst ))) return FALSE; |
| |
| if ((dcSrc = get_dc_ptr( hdcSrc ))) |
| { |
| struct bitblt_coords src, dst; |
| |
| update_dc( dcSrc ); |
| update_dc( dcDst ); |
| |
| src.log_x = xSrc; |
| src.log_y = ySrc; |
| src.log_width = widthSrc; |
| src.log_height = heightSrc; |
| src.layout = dcSrc->layout; |
| dst.log_x = xDst; |
| dst.log_y = yDst; |
| dst.log_width = widthDst; |
| dst.log_height = heightDst; |
| dst.layout = dcDst->layout; |
| if (rop & NOMIRRORBITMAP) |
| { |
| src.layout |= LAYOUT_BITMAPORIENTATIONPRESERVED; |
| dst.layout |= LAYOUT_BITMAPORIENTATIONPRESERVED; |
| rop &= ~NOMIRRORBITMAP; |
| } |
| ret = !get_vis_rectangles( dcDst, &dst, dcSrc, &src ); |
| |
| TRACE("src %p log=%d,%d %dx%d phys=%d,%d %dx%d vis=%s dst %p log=%d,%d %dx%d phys=%d,%d %dx%d vis=%s rop=%06x\n", |
| hdcSrc, src.log_x, src.log_y, src.log_width, src.log_height, |
| src.x, src.y, src.width, src.height, wine_dbgstr_rect(&src.visrect), |
| hdcDst, dst.log_x, dst.log_y, dst.log_width, dst.log_height, |
| dst.x, dst.y, dst.width, dst.height, wine_dbgstr_rect(&dst.visrect), rop ); |
| |
| if (!ret) |
| { |
| PHYSDEV src_dev = GET_DC_PHYSDEV( dcSrc, pStretchBlt ); |
| PHYSDEV dst_dev = GET_DC_PHYSDEV( dcDst, pStretchBlt ); |
| ret = dst_dev->funcs->pStretchBlt( dst_dev, &dst, src_dev, &src, rop ); |
| } |
| release_dc_ptr( dcSrc ); |
| } |
| release_dc_ptr( dcDst ); |
| return ret; |
| } |
| |
| #define FRGND_ROP3(ROP4) ((ROP4) & 0x00FFFFFF) |
| #define BKGND_ROP3(ROP4) (ROP3Table[((ROP4)>>24) & 0xFF]) |
| |
| /*********************************************************************** |
| * MaskBlt [GDI32.@] |
| */ |
| BOOL WINAPI MaskBlt(HDC hdcDest, INT nXDest, INT nYDest, |
| INT nWidth, INT nHeight, HDC hdcSrc, |
| INT nXSrc, INT nYSrc, HBITMAP hbmMask, |
| INT xMask, INT yMask, DWORD dwRop) |
| { |
| HBITMAP hBitmap1, hOldBitmap1, hBitmap2, hOldBitmap2; |
| HDC hDC1, hDC2; |
| HBRUSH hbrMask, hbrDst, hbrTmp; |
| |
| static const DWORD ROP3Table[256] = |
| { |
| 0x00000042, 0x00010289, |
| 0x00020C89, 0x000300AA, |
| 0x00040C88, 0x000500A9, |
| 0x00060865, 0x000702C5, |
| 0x00080F08, 0x00090245, |
| 0x000A0329, 0x000B0B2A, |
| 0x000C0324, 0x000D0B25, |
| 0x000E08A5, 0x000F0001, |
| 0x00100C85, 0x001100A6, |
| 0x00120868, 0x001302C8, |
| 0x00140869, 0x001502C9, |
| 0x00165CCA, 0x00171D54, |
| 0x00180D59, 0x00191CC8, |
| 0x001A06C5, 0x001B0768, |
| 0x001C06CA, 0x001D0766, |
| 0x001E01A5, 0x001F0385, |
| 0x00200F09, 0x00210248, |
| 0x00220326, 0x00230B24, |
| 0x00240D55, 0x00251CC5, |
| 0x002606C8, 0x00271868, |
| 0x00280369, 0x002916CA, |
| 0x002A0CC9, 0x002B1D58, |
| 0x002C0784, 0x002D060A, |
| 0x002E064A, 0x002F0E2A, |
| 0x0030032A, 0x00310B28, |
| 0x00320688, 0x00330008, |
| 0x003406C4, 0x00351864, |
| 0x003601A8, 0x00370388, |
| 0x0038078A, 0x00390604, |
| 0x003A0644, 0x003B0E24, |
| 0x003C004A, 0x003D18A4, |
| 0x003E1B24, 0x003F00EA, |
| 0x00400F0A, 0x00410249, |
| 0x00420D5D, 0x00431CC4, |
| 0x00440328, 0x00450B29, |
| 0x004606C6, 0x0047076A, |
| 0x00480368, 0x004916C5, |
| 0x004A0789, 0x004B0605, |
| 0x004C0CC8, 0x004D1954, |
| 0x004E0645, 0x004F0E25, |
| 0x00500325, 0x00510B26, |
| 0x005206C9, 0x00530764, |
| 0x005408A9, 0x00550009, |
| 0x005601A9, 0x00570389, |
| 0x00580785, 0x00590609, |
| 0x005A0049, 0x005B18A9, |
| 0x005C0649, 0x005D0E29, |
| 0x005E1B29, 0x005F00E9, |
| 0x00600365, 0x006116C6, |
| 0x00620786, 0x00630608, |
| 0x00640788, 0x00650606, |
| 0x00660046, 0x006718A8, |
| 0x006858A6, 0x00690145, |
| 0x006A01E9, 0x006B178A, |
| 0x006C01E8, 0x006D1785, |
| 0x006E1E28, 0x006F0C65, |
| 0x00700CC5, 0x00711D5C, |
| 0x00720648, 0x00730E28, |
| 0x00740646, 0x00750E26, |
| 0x00761B28, 0x007700E6, |
| 0x007801E5, 0x00791786, |
| 0x007A1E29, 0x007B0C68, |
| 0x007C1E24, 0x007D0C69, |
| 0x007E0955, 0x007F03C9, |
| 0x008003E9, 0x00810975, |
| 0x00820C49, 0x00831E04, |
| 0x00840C48, 0x00851E05, |
| 0x008617A6, 0x008701C5, |
| 0x008800C6, 0x00891B08, |
| 0x008A0E06, 0x008B0666, |
| 0x008C0E08, 0x008D0668, |
| 0x008E1D7C, 0x008F0CE5, |
| 0x00900C45, 0x00911E08, |
| 0x009217A9, 0x009301C4, |
| 0x009417AA, 0x009501C9, |
| 0x00960169, 0x0097588A, |
| 0x00981888, 0x00990066, |
| 0x009A0709, 0x009B07A8, |
| 0x009C0704, 0x009D07A6, |
| 0x009E16E6, 0x009F0345, |
| 0x00A000C9, 0x00A11B05, |
| 0x00A20E09, 0x00A30669, |
| 0x00A41885, 0x00A50065, |
| 0x00A60706, 0x00A707A5, |
| 0x00A803A9, 0x00A90189, |
| 0x00AA0029, 0x00AB0889, |
| 0x00AC0744, 0x00AD06E9, |
| 0x00AE0B06, 0x00AF0229, |
| 0x00B00E05, 0x00B10665, |
| 0x00B21974, 0x00B30CE8, |
| 0x00B4070A, 0x00B507A9, |
| 0x00B616E9, 0x00B70348, |
| 0x00B8074A, 0x00B906E6, |
| 0x00BA0B09, 0x00BB0226, |
| 0x00BC1CE4, 0x00BD0D7D, |
| 0x00BE0269, 0x00BF08C9, |
| 0x00C000CA, 0x00C11B04, |
| 0x00C21884, 0x00C3006A, |
| 0x00C40E04, 0x00C50664, |
| 0x00C60708, 0x00C707AA, |
| 0x00C803A8, 0x00C90184, |
| 0x00CA0749, 0x00CB06E4, |
| 0x00CC0020, 0x00CD0888, |
| 0x00CE0B08, 0x00CF0224, |
| 0x00D00E0A, 0x00D1066A, |
| 0x00D20705, 0x00D307A4, |
| 0x00D41D78, 0x00D50CE9, |
| 0x00D616EA, 0x00D70349, |
| 0x00D80745, 0x00D906E8, |
| 0x00DA1CE9, 0x00DB0D75, |
| 0x00DC0B04, 0x00DD0228, |
| 0x00DE0268, 0x00DF08C8, |
| 0x00E003A5, 0x00E10185, |
| 0x00E20746, 0x00E306EA, |
| 0x00E40748, 0x00E506E5, |
| 0x00E61CE8, 0x00E70D79, |
| 0x00E81D74, 0x00E95CE6, |
| 0x00EA02E9, 0x00EB0849, |
| 0x00EC02E8, 0x00ED0848, |
| 0x00EE0086, 0x00EF0A08, |
| 0x00F00021, 0x00F10885, |
| 0x00F20B05, 0x00F3022A, |
| 0x00F40B0A, 0x00F50225, |
| 0x00F60265, 0x00F708C5, |
| 0x00F802E5, 0x00F90845, |
| 0x00FA0089, 0x00FB0A09, |
| 0x00FC008A, 0x00FD0A0A, |
| 0x00FE02A9, 0x00FF0062, |
| }; |
| |
| if (!hbmMask) |
| return BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, FRGND_ROP3(dwRop)); |
| |
| hbrMask = CreatePatternBrush(hbmMask); |
| hbrDst = SelectObject(hdcDest, GetStockObject(NULL_BRUSH)); |
| |
| /* make bitmap */ |
| hDC1 = CreateCompatibleDC(hdcDest); |
| hBitmap1 = CreateCompatibleBitmap(hdcDest, nWidth, nHeight); |
| hOldBitmap1 = SelectObject(hDC1, hBitmap1); |
| |
| /* draw using bkgnd rop */ |
| BitBlt(hDC1, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, SRCCOPY); |
| hbrTmp = SelectObject(hDC1, hbrDst); |
| BitBlt(hDC1, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, BKGND_ROP3(dwRop)); |
| SelectObject(hDC1, hbrTmp); |
| |
| /* make bitmap */ |
| hDC2 = CreateCompatibleDC(hdcDest); |
| hBitmap2 = CreateCompatibleBitmap(hdcDest, nWidth, nHeight); |
| hOldBitmap2 = SelectObject(hDC2, hBitmap2); |
| |
| /* draw using foregnd rop */ |
| BitBlt(hDC2, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, SRCCOPY); |
| hbrTmp = SelectObject(hDC2, hbrDst); |
| BitBlt(hDC2, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, FRGND_ROP3(dwRop)); |
| |
| /* combine both using the mask as a pattern brush */ |
| SelectObject(hDC2, hbrMask); |
| BitBlt(hDC2, 0, 0, nWidth, nHeight, hDC1, 0, 0, 0xac0744 ); /* (D & P) | (S & ~P) */ |
| SelectObject(hDC2, hbrTmp); |
| |
| /* blit to dst */ |
| BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hDC2, 0, 0, SRCCOPY); |
| |
| /* restore all objects */ |
| SelectObject(hdcDest, hbrDst); |
| SelectObject(hDC1, hOldBitmap1); |
| SelectObject(hDC2, hOldBitmap2); |
| |
| /* delete all temp objects */ |
| DeleteObject(hBitmap1); |
| DeleteObject(hBitmap2); |
| DeleteObject(hbrMask); |
| |
| DeleteDC(hDC1); |
| DeleteDC(hDC2); |
| |
| return TRUE; |
| } |
| |
| /****************************************************************************** |
| * GdiTransparentBlt [GDI32.@] |
| */ |
| BOOL WINAPI GdiTransparentBlt( HDC hdcDest, int xDest, int yDest, int widthDest, int heightDest, |
| HDC hdcSrc, int xSrc, int ySrc, int widthSrc, int heightSrc, |
| UINT crTransparent ) |
| { |
| BOOL ret = FALSE; |
| HDC hdcWork; |
| HBITMAP bmpWork; |
| HGDIOBJ oldWork; |
| HDC hdcMask = NULL; |
| HBITMAP bmpMask = NULL; |
| HBITMAP oldMask = NULL; |
| COLORREF oldBackground; |
| COLORREF oldForeground; |
| int oldStretchMode; |
| |
| if(widthDest < 0 || heightDest < 0 || widthSrc < 0 || heightSrc < 0) { |
| TRACE("Cannot mirror\n"); |
| return FALSE; |
| } |
| |
| oldBackground = SetBkColor(hdcDest, RGB(255,255,255)); |
| oldForeground = SetTextColor(hdcDest, RGB(0,0,0)); |
| |
| /* Stretch bitmap */ |
| oldStretchMode = GetStretchBltMode(hdcSrc); |
| if(oldStretchMode == BLACKONWHITE || oldStretchMode == WHITEONBLACK) |
| SetStretchBltMode(hdcSrc, COLORONCOLOR); |
| hdcWork = CreateCompatibleDC(hdcDest); |
| bmpWork = CreateCompatibleBitmap(hdcDest, widthDest, heightDest); |
| oldWork = SelectObject(hdcWork, bmpWork); |
| if(!StretchBlt(hdcWork, 0, 0, widthDest, heightDest, hdcSrc, xSrc, ySrc, widthSrc, heightSrc, SRCCOPY)) { |
| TRACE("Failed to stretch\n"); |
| goto error; |
| } |
| SetBkColor(hdcWork, crTransparent); |
| |
| /* Create mask */ |
| hdcMask = CreateCompatibleDC(hdcDest); |
| bmpMask = CreateCompatibleBitmap(hdcMask, widthDest, heightDest); |
| oldMask = SelectObject(hdcMask, bmpMask); |
| if(!BitBlt(hdcMask, 0, 0, widthDest, heightDest, hdcWork, 0, 0, SRCCOPY)) { |
| TRACE("Failed to create mask\n"); |
| goto error; |
| } |
| |
| /* Replace transparent color with black */ |
| SetBkColor(hdcWork, RGB(0,0,0)); |
| SetTextColor(hdcWork, RGB(255,255,255)); |
| if(!BitBlt(hdcWork, 0, 0, widthDest, heightDest, hdcMask, 0, 0, SRCAND)) { |
| TRACE("Failed to mask out background\n"); |
| goto error; |
| } |
| |
| /* Replace non-transparent area on destination with black */ |
| if(!BitBlt(hdcDest, xDest, yDest, widthDest, heightDest, hdcMask, 0, 0, SRCAND)) { |
| TRACE("Failed to clear destination area\n"); |
| goto error; |
| } |
| |
| /* Draw the image */ |
| if(!BitBlt(hdcDest, xDest, yDest, widthDest, heightDest, hdcWork, 0, 0, SRCPAINT)) { |
| TRACE("Failed to paint image\n"); |
| goto error; |
| } |
| |
| ret = TRUE; |
| error: |
| SetStretchBltMode(hdcSrc, oldStretchMode); |
| SetBkColor(hdcDest, oldBackground); |
| SetTextColor(hdcDest, oldForeground); |
| if(hdcWork) { |
| SelectObject(hdcWork, oldWork); |
| DeleteDC(hdcWork); |
| } |
| if(bmpWork) DeleteObject(bmpWork); |
| if(hdcMask) { |
| SelectObject(hdcMask, oldMask); |
| DeleteDC(hdcMask); |
| } |
| if(bmpMask) DeleteObject(bmpMask); |
| return ret; |
| } |
| |
| /****************************************************************************** |
| * GdiAlphaBlend [GDI32.@] |
| */ |
| BOOL WINAPI GdiAlphaBlend(HDC hdcDst, int xDst, int yDst, int widthDst, int heightDst, |
| HDC hdcSrc, int xSrc, int ySrc, int widthSrc, int heightSrc, |
| BLENDFUNCTION blendFunction) |
| { |
| BOOL ret = FALSE; |
| DC *dcDst, *dcSrc; |
| |
| dcSrc = get_dc_ptr( hdcSrc ); |
| if (!dcSrc) return FALSE; |
| |
| if ((dcDst = get_dc_ptr( hdcDst ))) |
| { |
| struct bitblt_coords src, dst; |
| |
| update_dc( dcSrc ); |
| update_dc( dcDst ); |
| |
| src.log_x = xSrc; |
| src.log_y = ySrc; |
| src.log_width = widthSrc; |
| src.log_height = heightSrc; |
| src.layout = GetLayout( hdcSrc ); |
| dst.log_x = xDst; |
| dst.log_y = yDst; |
| dst.log_width = widthDst; |
| dst.log_height = heightDst; |
| dst.layout = GetLayout( hdcDst ); |
| ret = !get_vis_rectangles( dcDst, &dst, dcSrc, &src ); |
| |
| TRACE("src %p log=%d,%d %dx%d phys=%d,%d %dx%d vis=%s dst %p log=%d,%d %dx%d phys=%d,%d %dx%d vis=%s blend=%02x/%02x/%02x/%02x\n", |
| hdcSrc, src.log_x, src.log_y, src.log_width, src.log_height, |
| src.x, src.y, src.width, src.height, wine_dbgstr_rect(&src.visrect), |
| hdcDst, dst.log_x, dst.log_y, dst.log_width, dst.log_height, |
| dst.x, dst.y, dst.width, dst.height, wine_dbgstr_rect(&dst.visrect), |
| blendFunction.BlendOp, blendFunction.BlendFlags, |
| blendFunction.SourceConstantAlpha, blendFunction.AlphaFormat ); |
| |
| if (src.x < 0 || src.y < 0 || src.width < 0 || src.height < 0 || |
| src.log_width < 0 || src.log_height < 0 || |
| (!is_rect_empty( &dcSrc->device_rect ) && |
| (src.width > dcSrc->device_rect.right - dcSrc->vis_rect.left - src.x || |
| src.height > dcSrc->device_rect.bottom - dcSrc->vis_rect.top - src.y))) |
| { |
| WARN( "Invalid src coords: (%d,%d), size %dx%d\n", src.x, src.y, src.width, src.height ); |
| SetLastError( ERROR_INVALID_PARAMETER ); |
| ret = FALSE; |
| } |
| else if (dst.log_width < 0 || dst.log_height < 0) |
| { |
| WARN( "Invalid dst coords: (%d,%d), size %dx%d\n", |
| dst.log_x, dst.log_y, dst.log_width, dst.log_height ); |
| SetLastError( ERROR_INVALID_PARAMETER ); |
| ret = FALSE; |
| } |
| else if (dcSrc == dcDst && src.x + src.width > dst.x && src.x < dst.x + dst.width && |
| src.y + src.height > dst.y && src.y < dst.y + dst.height) |
| { |
| WARN( "Overlapping coords: (%d,%d), %dx%d and (%d,%d), %dx%d\n", |
| src.x, src.y, src.width, src.height, dst.x, dst.y, dst.width, dst.height ); |
| SetLastError( ERROR_INVALID_PARAMETER ); |
| ret = FALSE; |
| } |
| else if (!ret) |
| { |
| PHYSDEV src_dev = GET_DC_PHYSDEV( dcSrc, pAlphaBlend ); |
| PHYSDEV dst_dev = GET_DC_PHYSDEV( dcDst, pAlphaBlend ); |
| ret = dst_dev->funcs->pAlphaBlend( dst_dev, &dst, src_dev, &src, blendFunction ); |
| } |
| release_dc_ptr( dcDst ); |
| } |
| release_dc_ptr( dcSrc ); |
| return ret; |
| } |
| |
| /********************************************************************* |
| * PlgBlt [GDI32.@] |
| * |
| */ |
| BOOL WINAPI PlgBlt( HDC hdcDest, const POINT *lpPoint, |
| HDC hdcSrc, INT nXSrc, INT nYSrc, INT nWidth, |
| INT nHeight, HBITMAP hbmMask, INT xMask, INT yMask) |
| { |
| int oldgMode; |
| /* parallelogram coords */ |
| POINT plg[3]; |
| /* rect coords */ |
| POINT rect[3]; |
| XFORM xf; |
| XFORM SrcXf; |
| XFORM oldDestXf; |
| double det; |
| |
| /* save actual mode, set GM_ADVANCED */ |
| oldgMode = SetGraphicsMode(hdcDest,GM_ADVANCED); |
| if (oldgMode == 0) |
| return FALSE; |
| |
| memcpy(plg,lpPoint,sizeof(POINT)*3); |
| rect[0].x = nXSrc; |
| rect[0].y = nYSrc; |
| rect[1].x = nXSrc + nWidth; |
| rect[1].y = nYSrc; |
| rect[2].x = nXSrc; |
| rect[2].y = nYSrc + nHeight; |
| /* calc XFORM matrix to transform hdcDest -> hdcSrc (parallelogram to rectangle) */ |
| /* determinant */ |
| det = rect[1].x*(rect[2].y - rect[0].y) - rect[2].x*(rect[1].y - rect[0].y) - rect[0].x*(rect[2].y - rect[1].y); |
| |
| if (fabs(det) < 1e-5) |
| { |
| SetGraphicsMode(hdcDest,oldgMode); |
| return FALSE; |
| } |
| |
| TRACE("hdcSrc=%p %d,%d,%dx%d -> hdcDest=%p %d,%d,%d,%d,%d,%d\n", |
| hdcSrc, nXSrc, nYSrc, nWidth, nHeight, hdcDest, plg[0].x, plg[0].y, plg[1].x, plg[1].y, plg[2].x, plg[2].y); |
| |
| /* X components */ |
| xf.eM11 = (plg[1].x*(rect[2].y - rect[0].y) - plg[2].x*(rect[1].y - rect[0].y) - plg[0].x*(rect[2].y - rect[1].y)) / det; |
| xf.eM21 = (rect[1].x*(plg[2].x - plg[0].x) - rect[2].x*(plg[1].x - plg[0].x) - rect[0].x*(plg[2].x - plg[1].x)) / det; |
| xf.eDx = (rect[0].x*(rect[1].y*plg[2].x - rect[2].y*plg[1].x) - |
| rect[1].x*(rect[0].y*plg[2].x - rect[2].y*plg[0].x) + |
| rect[2].x*(rect[0].y*plg[1].x - rect[1].y*plg[0].x) |
| ) / det; |
| |
| /* Y components */ |
| xf.eM12 = (plg[1].y*(rect[2].y - rect[0].y) - plg[2].y*(rect[1].y - rect[0].y) - plg[0].y*(rect[2].y - rect[1].y)) / det; |
| xf.eM22 = (plg[1].x*(rect[2].y - rect[0].y) - plg[2].x*(rect[1].y - rect[0].y) - plg[0].x*(rect[2].y - rect[1].y)) / det; |
| xf.eDy = (rect[0].x*(rect[1].y*plg[2].y - rect[2].y*plg[1].y) - |
| rect[1].x*(rect[0].y*plg[2].y - rect[2].y*plg[0].y) + |
| rect[2].x*(rect[0].y*plg[1].y - rect[1].y*plg[0].y) |
| ) / det; |
| |
| GetWorldTransform(hdcSrc,&SrcXf); |
| CombineTransform(&xf,&xf,&SrcXf); |
| |
| /* save actual dest transform */ |
| GetWorldTransform(hdcDest,&oldDestXf); |
| |
| SetWorldTransform(hdcDest,&xf); |
| /* now destination and source DCs use same coords */ |
| MaskBlt(hdcDest,nXSrc,nYSrc,nWidth,nHeight, |
| hdcSrc, nXSrc,nYSrc, |
| hbmMask,xMask,yMask, |
| SRCCOPY); |
| /* restore dest DC */ |
| SetWorldTransform(hdcDest,&oldDestXf); |
| SetGraphicsMode(hdcDest,oldgMode); |
| |
| return TRUE; |
| } |
