Alexandre Julliard : gdi32: Add a helper function to add a rectangle to a region.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c861284a029dac7fa9a1238a098916226c0cc2ab
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=c861284a029dac7fa9a1238a098916226c0cc2ab

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Wed Dec 28 11:04:30 2011 +0100

gdi32: Add a helper function to add a rectangle to a region.

---

 dlls/gdi32/dibdrv/bitblt.c |   27 ++++++++++++++++-----------
 dlls/gdi32/gdi_private.h   |    1 +
 dlls/gdi32/region.c        |   10 ++++++++++
 3 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/dlls/gdi32/dibdrv/bitblt.c b/dlls/gdi32/dibdrv/bitblt.c
index 6e0d425..b491762 100644
--- a/dlls/gdi32/dibdrv/bitblt.c
+++ b/dlls/gdi32/dibdrv/bitblt.c
@@ -1288,8 +1288,8 @@ DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_a
     unsigned int i;
     int y;
     TRIVERTEX vert[3];
+    RECT rc;
     DWORD ret = ERROR_SUCCESS;
-    HRGN tmp_rgn = 0;
 
     init_dib_info_from_bitmapinfo( &dib, info, bits, default_color_table );
 
@@ -1300,9 +1300,11 @@ DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_a
         {
             get_gradient_hrect_vertices( rect, vert_array, dev_pts, vert );
             gradient_rect( &dib, vert, mode, 0 );
-            if (!tmp_rgn) tmp_rgn = CreateRectRgn( vert[0].x, vert[0].y, vert[1].x, vert[1].y );
-            else SetRectRgn( tmp_rgn, vert[0].x, vert[0].y, vert[1].x, vert[1].y );
-            CombineRgn( rgn, rgn, tmp_rgn, RGN_OR );
+            rc.left   = vert[0].x;
+            rc.top    = vert[0].y;
+            rc.right  = vert[1].x;
+            rc.bottom = vert[1].y;
+            add_rect_to_region( rgn, &rc );
         }
         break;
 
@@ -1311,9 +1313,11 @@ DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_a
         {
             get_gradient_vrect_vertices( rect, vert_array, dev_pts, vert );
             gradient_rect( &dib, vert, mode, 0 );
-            if (!tmp_rgn) tmp_rgn = CreateRectRgn( vert[0].x, vert[0].y, vert[1].x, vert[1].y );
-            else SetRectRgn( tmp_rgn, vert[0].x, vert[0].y, vert[1].x, vert[1].y );
-            CombineRgn( rgn, rgn, tmp_rgn, RGN_OR );
+            rc.left   = vert[0].x;
+            rc.top    = vert[0].y;
+            rc.right  = vert[1].x;
+            rc.bottom = vert[1].y;
+            add_rect_to_region( rgn, &rc );
         }
         break;
 
@@ -1323,22 +1327,23 @@ DWORD gradient_bitmapinfo( const BITMAPINFO *info, void *bits, TRIVERTEX *vert_a
             get_gradient_triangle_vertices( tri, vert_array, dev_pts, vert );
             if (gradient_rect( &dib, vert, mode, 0 ))
             {
-                if (!tmp_rgn) tmp_rgn = CreateRectRgn( 0, 0, 0, 0 );
                 for (y = vert[0].y; y < vert[2].y; y++)
                 {
                     int x1, x2 = edge_coord( y, vert[0].x, vert[0].y, vert[2].x, vert[2].y );
                     if (y < vert[1].y) x1 = edge_coord( y, vert[0].x, vert[0].y, vert[1].x, vert[1].y );
                     else x1 = edge_coord( y, vert[1].x, vert[1].y, vert[2].x, vert[2].y );
 
-                    SetRectRgn( tmp_rgn, min(x1,x2), y, max(x1,x2), y + 1 );
-                    CombineRgn( rgn, rgn, tmp_rgn, RGN_OR );
+                    rc.left   = min( x1, x2 );
+                    rc.top    = y;
+                    rc.right  = max( x1, x2 );
+                    rc.bottom = y + 1;
+                    add_rect_to_region( rgn, &rc );
                 }
             }
             else ret = ERROR_INVALID_PARAMETER;
         }
         break;
     }
-    DeleteObject( tmp_rgn );
     return ret;
 }
 
diff --git a/dlls/gdi32/gdi_private.h b/dlls/gdi32/gdi_private.h
index eab87d0..c9822fe 100644
--- a/dlls/gdi32/gdi_private.h
+++ b/dlls/gdi32/gdi_private.h
@@ -318,6 +318,7 @@ extern UINT WINAPI GDIRealizePalette( HDC hdc ) DECLSPEC_HIDDEN;
 extern HPALETTE PALETTE_Init(void) DECLSPEC_HIDDEN;
 
 /* region.c */
+extern BOOL add_rect_to_region( HRGN rgn, const RECT *rect ) DECLSPEC_HIDDEN;
 extern INT mirror_region( HRGN dst, HRGN src, INT width ) DECLSPEC_HIDDEN;
 extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN;
 
diff --git a/dlls/gdi32/region.c b/dlls/gdi32/region.c
index 40a5cea..4daf88c 100644
--- a/dlls/gdi32/region.c
+++ b/dlls/gdi32/region.c
@@ -1268,6 +1268,16 @@ static BOOL REGION_UnionRectWithRegion(const RECT *rect, WINEREGION *rgn)
 }
 
 
+BOOL add_rect_to_region( HRGN rgn, const RECT *rect )
+{
+    RGNOBJ *obj = GDI_GetObjPtr( rgn, OBJ_REGION );
+
+    if (!obj) return FALSE;
+    REGION_UnionRectWithRegion( rect, &obj->rgn );
+    GDI_ReleaseObj( rgn );
+    return TRUE;
+}
+
 /***********************************************************************
  *           REGION_CreateFrameRgn
  *