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gdi32: Don't store the metaclip region, recompute it as needed.

This commit is contained in:
Alexandre Julliard 2011-12-07 17:49:47 +01:00
parent fb37752f53
commit b9f09abdcc
3 changed files with 26 additions and 42 deletions
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53
dlls/gdi32/clipping.c
View File

@ -85,27 +85,21 @@ BOOL clip_visrect( DC *dc, RECT *dst, const RECT *src )
*/
void CLIPPING_UpdateGCRegion( DC * dc )
{
HRGN clip_rgn;
PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceClipping );
HRGN regions[3];
int count = 0;
/* update the intersection of meta and clip regions */
if (dc->hMetaRgn && dc->hClipRgn)
{
if (!dc->hMetaClipRgn) dc->hMetaClipRgn = CreateRectRgn( 0, 0, 0, 0 );
CombineRgn( dc->hMetaClipRgn, dc->hClipRgn, dc->hMetaRgn, RGN_AND );
}
else /* only one is set, no need for an intersection */
{
if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
dc->hMetaClipRgn = 0;
}
clip_rgn = get_clip_region( dc );
if (clip_rgn && dc->hVisRgn)
if (dc->hVisRgn) regions[count++] = dc->hVisRgn;
if (dc->hClipRgn) regions[count++] = dc->hClipRgn;
if (dc->hMetaRgn) regions[count++] = dc->hMetaRgn;
if (count > 1)
{
if (!dc->region) dc->region = CreateRectRgn( 0, 0, 0, 0 );
CombineRgn( dc->region, dc->hVisRgn, clip_rgn, clip_rgn ? RGN_AND : RGN_COPY );
CombineRgn( dc->region, regions[0], regions[1], RGN_AND );
if (count > 2) CombineRgn( dc->region, dc->region, regions[2], RGN_AND );
}
else
else /* only one region, we don't need the total region */
{
if (dc->region) DeleteObject( dc->region );
dc->region = 0;
@ -512,7 +506,7 @@ INT WINAPI GetRandomRgn(HDC hDC, HRGN hRgn, INT iCode)
else ret = 0;
break;
case 3:
if (dc->hMetaClipRgn) CombineRgn( hRgn, dc->hMetaClipRgn, 0, RGN_COPY );
if (dc->hClipRgn && dc->hMetaRgn) CombineRgn( hRgn, dc->hClipRgn, dc->hMetaRgn, RGN_AND );
else if (dc->hClipRgn) CombineRgn( hRgn, dc->hClipRgn, 0, RGN_COPY );
else if (dc->hMetaRgn) CombineRgn( hRgn, dc->hMetaRgn, 0, RGN_COPY );
else ret = 0;
@ -549,19 +543,20 @@ INT WINAPI SetMetaRgn( HDC hdc )
if (!dc) return ERROR;
if (dc->hMetaClipRgn)
if (dc->hClipRgn)
{
/* the intersection becomes the new meta region */
DeleteObject( dc->hMetaRgn );
DeleteObject( dc->hClipRgn );
dc->hMetaRgn = dc->hMetaClipRgn;
dc->hClipRgn = 0;
dc->hMetaClipRgn = 0;
}
else if (dc->hClipRgn)
{
dc->hMetaRgn = dc->hClipRgn;
dc->hClipRgn = 0;
if (dc->hMetaRgn)
{
/* the intersection becomes the new meta region */
CombineRgn( dc->hMetaRgn, dc->hMetaRgn, dc->hClipRgn, RGN_AND );
DeleteObject( dc->hClipRgn );
dc->hClipRgn = 0;
}
else
{
dc->hMetaRgn = dc->hClipRgn;
dc->hClipRgn = 0;
}
}
/* else nothing to do */

3
dlls/gdi32/dc.c
View File

@ -138,7 +138,6 @@ static void free_dc_state( DC *dc )
{
if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
if (dc->region) DeleteObject( dc->region );
if (dc->path) free_gdi_path( dc->path );
@ -396,8 +395,6 @@ INT nulldrv_SaveDC( PHYSDEV dev )
CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
}
/* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
if (!PATH_SavePath( newdc, dc ))
{
release_dc_ptr( dc );

12
dlls/gdi32/gdi_private.h
View File

@ -106,7 +106,6 @@ typedef struct tagDC
DWORD layout;
HRGN hClipRgn; /* Clip region */
HRGN hMetaRgn; /* Meta region */
HRGN hMetaClipRgn; /* Intersection of meta and clip regions */
HRGN hVisRgn; /* Visible region */
HRGN region; /* Total DC region (intersection of clip and visible) */
HPEN hPen;
@ -216,20 +215,13 @@ extern BOOL get_brush_bitmap_info( HBRUSH handle, BITMAPINFO *info, void **bits,
extern BOOL clip_visrect( DC *dc, RECT *dst, const RECT *src ) DECLSPEC_HIDDEN;
extern void CLIPPING_UpdateGCRegion( DC * dc ) DECLSPEC_HIDDEN;
/* Return the total clip region (if any) */
static inline HRGN get_clip_region( DC * dc )
{
if (dc->hMetaClipRgn) return dc->hMetaClipRgn;
if (dc->hMetaRgn) return dc->hMetaRgn;
return dc->hClipRgn;
}
/* Return the total DC region (if any) */
static inline HRGN get_dc_region( DC *dc )
{
if (dc->region) return dc->region;
if (dc->hVisRgn) return dc->hVisRgn;
return get_clip_region( dc );
if (dc->hClipRgn) return dc->hClipRgn;
return dc->hMetaRgn;
}
/* dc.c */