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gdi32: Implement ExtFloodFill.

This commit is contained in:
Huw Davies 2012-01-18 14:48:25 +00:00 committed by Alexandre Julliard
parent ff4045b110
commit d69868e464
1 changed files with 63 additions and 1 deletions
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64
dlls/gdi32/dibdrv/graphics.c
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@ -678,12 +678,74 @@ BOOL dibdrv_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
return dibdrv_RoundRect( dev, left, top, right, bottom, right - left, bottom - top );
}
static inline BOOL is_interior( dib_info *dib, int x, int y, DWORD pixel, UINT type)
{
if (type == FLOODFILLBORDER)
return dib->funcs->get_pixel( dib, x, y ) != pixel;
else
return dib->funcs->get_pixel( dib, x, y ) == pixel;
}
static void fill_row( dib_info *dib, RECT *row, DWORD pixel, UINT type, HRGN rgn );
static inline void do_next_row( dib_info *dib, const RECT *row, int offset, DWORD pixel, UINT type, HRGN rgn )
{
RECT next;
next.top = row->top + offset;
next.bottom = next.top + 1;
next.left = next.right = row->left;
while (next.right < row->right)
{
if (is_interior( dib, next.right, next.top, pixel, type)) next.right++;
else
{
if (next.left != next.right && !PtInRegion( rgn, next.left, next.top ))
fill_row( dib, &next, pixel, type, rgn );
next.left = ++next.right;
}
}
if (next.left != next.right && !PtInRegion( rgn, next.left, next.top ))
fill_row( dib, &next, pixel, type, rgn );
}
static void fill_row( dib_info *dib, RECT *row, DWORD pixel, UINT type, HRGN rgn )
{
while (row->left > 0 && is_interior( dib, row->left - 1, row->top, pixel, type)) row->left--;
while (row->right < dib->width && is_interior( dib, row->right, row->top, pixel, type)) row->right++;
add_rect_to_region( rgn, row );
if (row->top > 0) do_next_row( dib, row, -1, pixel, type, rgn );
if (row->top < dib->height - 1) do_next_row( dib, row, 1, pixel, type, rgn );
return;
}
/***********************************************************************
* dibdrv_ExtFloodFill
*/
BOOL dibdrv_ExtFloodFill( PHYSDEV dev, INT x, INT y, COLORREF color, UINT type )
{
FIXME( "not implemented yet\n" );
dibdrv_physdev *pdev = get_dibdrv_pdev( dev );
DWORD pixel = get_pixel_color( pdev, color, FALSE );
RECT row;
HRGN rgn;
TRACE( "(%p, %d, %d, %08x, %d\n", pdev, x, y, color, type );
if (!is_interior( &pdev->dib, x, y, pixel, type )) return FALSE;
rgn = CreateRectRgn( 0, 0, 0, 0 );
row.left = x;
row.right = x + 1;
row.top = y;
row.bottom = y + 1;
fill_row( &pdev->dib, &row, pixel, type, rgn );
brush_region( pdev, rgn );
DeleteObject( rgn );
return TRUE;
}