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https://github.com/reactos/reactos.git
synced 2024-07-08 13:45:06 +00:00
[gdi32]
- Add notes, fix CombineRgn and cleanup. svn path=/trunk/; revision=44775
This commit is contained in:
James Tabor
parent
fc5a89cd69
commit
e50eff1409
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@ -1,22 +1,38 @@
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#include "precomp.h"
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#define NDEBUG
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#include <debug.h>
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#define INRECT(r, x, y) \
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( ( ((r).right > x)) && \
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( ((r).left <= x)) && \
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( ((r).bottom > y)) && \
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( ((r).top <= y)) )
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#define OVERLAPPING_RGN 0
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#define INVERTED_RGN 1
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#define SAME_RGN 2
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#define DIFF_RGN 3
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/*
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From tests, there are four results based on normalized coordinates.
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If the rects are overlapping and normalized, it's OVERLAPPING_RGN.
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If the rects are overlapping in anyway or same in dimension and one is inverted,
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it's INVERTED_RGN.
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If the rects are same in dimension or NULL, it's SAME_RGN.
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If the rects are overlapping and not normalized or displace in different areas,
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it's DIFF_RGN.
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*/
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static
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INT
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FASTCALL
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ComplexityFromRects( PRECT prc1, PRECT prc2)
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ComplexityFromRects( PRECTL prc1, PRECTL prc2)
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{
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if ( prc2->left >= prc1->left )
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{
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if ( ( prc1->right >= prc2->right) &&
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( prc1->top <= prc2->top ) &&
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( prc1->bottom <= prc2->bottom ) )
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return SIMPLEREGION;
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( prc1->bottom >= prc2->bottom ) )
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return SAME_RGN;
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if ( prc2->left > prc1->left )
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{
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@ -24,7 +40,7 @@ ComplexityFromRects( PRECT prc1, PRECT prc2)
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( prc1->right <= prc2->left ) ||
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( prc1->top >= prc2->bottom ) ||
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( prc1->bottom <= prc2->top ) )
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return COMPLEXREGION;
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return DIFF_RGN;
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}
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}
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@ -36,14 +52,13 @@ ComplexityFromRects( PRECT prc1, PRECT prc2)
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( prc1->right <= prc2->left ) ||
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( prc1->top >= prc2->bottom ) ||
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( prc1->bottom <= prc2->top ) )
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return COMPLEXREGION;
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return DIFF_RGN;
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}
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else
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{
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return NULLREGION;
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return INVERTED_RGN;
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}
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return ERROR;
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return OVERLAPPING_RGN;
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}
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static
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@ -181,7 +196,7 @@ MirrorRgnDC(HDC hdc, HRGN hRgn, HRGN *phRgn)
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/* FUNCTIONS *****************************************************************/
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/*
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* @unimplemented
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* @implemented
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*/
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INT
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WINAPI
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@ -190,8 +205,203 @@ CombineRgn(HRGN hDest,
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HRGN hSrc2,
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INT CombineMode)
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{
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/* FIXME some part should be done in user mode */
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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PRGN_ATTR pRgn_Attr_Dest = NULL;
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PRGN_ATTR pRgn_Attr_Src1 = NULL;
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PRGN_ATTR pRgn_Attr_Src2 = NULL;
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INT Complexity;
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BOOL Ret;
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Ret = GdiGetHandleUserData((HGDIOBJ) hDest, GDI_OBJECT_TYPE_REGION, (PVOID) &pRgn_Attr_Dest);
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Ret = GdiGetHandleUserData((HGDIOBJ) hSrc1, GDI_OBJECT_TYPE_REGION, (PVOID) &pRgn_Attr_Src1);
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if ( !Ret ||
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!pRgn_Attr_Dest ||
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!pRgn_Attr_Src1 ||
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pRgn_Attr_Src1->Flags > SIMPLEREGION )
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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/* Handle COPY and use only src1. */
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if ( CombineMode == RGN_COPY )
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{
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switch (pRgn_Attr_Src1->Flags)
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{
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case NULLREGION:
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Ret = SetRectRgn( hDest, 0, 0, 0, 0);
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if (Ret)
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return NULLREGION;
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goto ERROR_Exit;
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case SIMPLEREGION:
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Ret = SetRectRgn( hDest,
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pRgn_Attr_Src1->Rect.left,
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pRgn_Attr_Src1->Rect.top,
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pRgn_Attr_Src1->Rect.right,
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pRgn_Attr_Src1->Rect.bottom );
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if (Ret)
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return SIMPLEREGION;
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goto ERROR_Exit;
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case COMPLEXREGION:
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default:
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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}
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}
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Ret = GdiGetHandleUserData((HGDIOBJ) hSrc2, GDI_OBJECT_TYPE_REGION, (PVOID) &pRgn_Attr_Src2);
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if ( !Ret ||
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!pRgn_Attr_Src2 ||
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pRgn_Attr_Src2->Flags > SIMPLEREGION )
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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/* All but AND. */
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if ( CombineMode != RGN_AND)
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{
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if ( CombineMode <= RGN_AND)
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{
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/*
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There might be some type of junk in the call, so go K.
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If this becomes a problem, need to setup parameter check at the top.
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*/
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DPRINT1("Might be junk! CombineMode %d\n",CombineMode);
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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}
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if ( CombineMode > RGN_XOR) /* Handle DIFF. */
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{
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if ( CombineMode != RGN_DIFF)
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{ /* Filter check! Well, must be junk?, so go K. */
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DPRINT1("RGN_COPY was handled! CombineMode %d\n",CombineMode);
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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}
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if ( pRgn_Attr_Src1->Flags != NULLREGION &&
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pRgn_Attr_Src2->Flags != NULLREGION )
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{
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Complexity = ComplexityFromRects( &pRgn_Attr_Src1->Rect, &pRgn_Attr_Src2->Rect);
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/* If same or overlapping and norm just go K. */
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if (Complexity == SAME_RGN || Complexity == OVERLAPPING_RGN)
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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}
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/* Just NULL rgn. */
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if (SetRectRgn( hDest, 0, 0, 0, 0))
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return NULLREGION;
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goto ERROR_Exit;
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}
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else /* Handle OR or XOR. */
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{
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if ( pRgn_Attr_Src1->Flags == NULLREGION )
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{
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if ( pRgn_Attr_Src2->Flags != NULLREGION )
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{ /* Src1 null and not NULL, set from src2. */
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Ret = SetRectRgn( hDest,
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pRgn_Attr_Src2->Rect.left,
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pRgn_Attr_Src2->Rect.top,
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pRgn_Attr_Src2->Rect.right,
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pRgn_Attr_Src2->Rect.bottom );
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if (Ret)
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return SIMPLEREGION;
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goto ERROR_Exit;
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}
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/* Both are NULL. */
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if (SetRectRgn( hDest, 0, 0, 0, 0))
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return NULLREGION;
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goto ERROR_Exit;
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}
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/* Src1 is not NULL. */
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if ( pRgn_Attr_Src2->Flags != NULLREGION )
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{
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if ( CombineMode != RGN_OR ) /* Filter XOR, so go K. */
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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Complexity = ComplexityFromRects( &pRgn_Attr_Src1->Rect, &pRgn_Attr_Src2->Rect);
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/* If inverted use Src2. */
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if ( Complexity == INVERTED_RGN)
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{
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Ret = SetRectRgn( hDest,
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pRgn_Attr_Src2->Rect.left,
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pRgn_Attr_Src2->Rect.top,
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pRgn_Attr_Src2->Rect.right,
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pRgn_Attr_Src2->Rect.bottom );
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if (Ret)
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return SIMPLEREGION;
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goto ERROR_Exit;
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}
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/* Not NULL or overlapping or differentiated, go to K. */
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if ( Complexity != SAME_RGN)
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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/* If same, just fall through. */
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}
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}
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Ret = SetRectRgn( hDest,
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pRgn_Attr_Src1->Rect.left,
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pRgn_Attr_Src1->Rect.top,
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pRgn_Attr_Src1->Rect.right,
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pRgn_Attr_Src1->Rect.bottom );
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if (Ret)
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return SIMPLEREGION;
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goto ERROR_Exit;
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}
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/* Handle AND. */
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if ( pRgn_Attr_Src1->Flags != NULLREGION &&
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pRgn_Attr_Src2->Flags != NULLREGION )
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{
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Complexity = ComplexityFromRects( &pRgn_Attr_Src1->Rect, &pRgn_Attr_Src2->Rect);
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if ( Complexity == DIFF_RGN ) /* Differentiated in anyway just NULL rgn. */
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{
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if (SetRectRgn( hDest, 0, 0, 0, 0))
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return NULLREGION;
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goto ERROR_Exit;
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}
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if ( Complexity != INVERTED_RGN) /* Not inverted and overlapping. */
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{
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if ( Complexity != SAME_RGN) /* Must be norm and overlapping. */
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return NtGdiCombineRgn(hDest, hSrc1, hSrc2, CombineMode);
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/* Merge from src2. */
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Ret = SetRectRgn( hDest,
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pRgn_Attr_Src2->Rect.left,
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pRgn_Attr_Src2->Rect.top,
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pRgn_Attr_Src2->Rect.right,
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pRgn_Attr_Src2->Rect.bottom );
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if (Ret)
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return SIMPLEREGION;
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goto ERROR_Exit;
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}
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/* Inverted so merge from src1. */
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Ret = SetRectRgn( hDest,
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pRgn_Attr_Src1->Rect.left,
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pRgn_Attr_Src1->Rect.top,
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pRgn_Attr_Src1->Rect.right,
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pRgn_Attr_Src1->Rect.bottom );
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if (Ret)
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return SIMPLEREGION;
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goto ERROR_Exit;
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}
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/* It's all NULL! */
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if (SetRectRgn( hDest, 0, 0, 0, 0))
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return NULLREGION;
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ERROR_Exit:
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/* Even on error the flag is set dirty and force server side to redraw. */
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pRgn_Attr_Dest->AttrFlags |= ATTR_RGN_DIRTY;
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return ERROR;
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}
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/*
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* @implemented
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*/
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HRGN
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WINAPI
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CreateEllipticRgnIndirect(
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const RECT *prc
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)
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{
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/* Notes if prc is NULL it will crash on All Windows NT I checked 2000/XP/VISTA */
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return NtGdiCreateEllipticRgn(prc->left, prc->top, prc->right, prc->bottom);
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}
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/*
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@ -217,20 +427,6 @@ CreatePolyPolygonRgn( const POINT* lppt,
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return (HRGN) NtGdiPolyPolyDraw( (HDC) fnPolyFillMode, (PPOINT) lppt, (PULONG) lpPolyCounts, (ULONG) nCount, GdiPolyPolyRgn );
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}
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/*
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* @implemented
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*/
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HRGN
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WINAPI
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CreateEllipticRgnIndirect(
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const RECT *prc
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)
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{
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/* Notes if prc is NULL it will crash on All Windows NT I checked 2000/XP/VISTA */
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return NtGdiCreateEllipticRgn(prc->left, prc->top, prc->right, prc->bottom);
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}
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/*
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* @implemented
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*/
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@ -585,14 +781,12 @@ OffsetRgn( HRGN hrgn,
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{
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return ERROR;
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}
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else
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{
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pRgn_Attr->Rect.top = nTopRect;
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pRgn_Attr->Rect.left = nLeftRect;
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pRgn_Attr->Rect.right = nRightRect;
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pRgn_Attr->Rect.bottom = nBottomRect;
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pRgn_Attr->AttrFlags |= ATTR_RGN_DIRTY;
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}
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pRgn_Attr->Rect.top = nTopRect;
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pRgn_Attr->Rect.left = nLeftRect;
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pRgn_Attr->Rect.right = nRightRect;
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pRgn_Attr->Rect.bottom = nBottomRect;
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pRgn_Attr->AttrFlags |= ATTR_RGN_DIRTY;
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}
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}
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return pRgn_Attr->Flags;
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@ -630,7 +824,7 @@ RectInRegion(HRGN hrgn,
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LPCRECT prcl)
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{
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PRGN_ATTR pRgn_Attr;
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RECT rc;
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RECTL rc;
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if (!GdiGetHandleUserData((HGDIOBJ) hrgn, GDI_OBJECT_TYPE_REGION, (PVOID) &pRgn_Attr))
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return NtGdiRectInRegion(hrgn, (LPRECT) prcl);
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@ -643,31 +837,31 @@ RectInRegion(HRGN hrgn,
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/* swap the coordinates to make right >= left and bottom >= top */
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/* (region building rectangles are normalized the same way) */
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if ( prcl->top > prcl->bottom)
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{
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rc.top = prcl->bottom;
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rc.bottom = prcl->top;
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}
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else
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{
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rc.top = prcl->top;
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rc.bottom = prcl->bottom;
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}
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if ( prcl->right < prcl->left)
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{
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rc.right = prcl->left;
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rc.left = prcl->right;
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}
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else
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{
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rc.right = prcl->right;
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rc.left = prcl->left;
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}
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if ( prcl->top > prcl->bottom)
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{
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rc.top = prcl->bottom;
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rc.bottom = prcl->top;
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}
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else
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{
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rc.top = prcl->top;
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rc.bottom = prcl->bottom;
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}
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if ( prcl->right < prcl->left)
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{
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rc.right = prcl->left;
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rc.left = prcl->right;
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}
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else
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{
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rc.right = prcl->right;
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rc.left = prcl->left;
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}
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if ( ComplexityFromRects( (PRECT)&pRgn_Attr->Rect, &rc) != COMPLEXREGION )
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return TRUE;
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if ( ComplexityFromRects( &pRgn_Attr->Rect, &rc) != DIFF_RGN )
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return TRUE;
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return FALSE;
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return FALSE;
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}
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/*
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@ -752,4 +946,3 @@ SetMetaRgn( HDC hDC )
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return ERROR;
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}
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