99 lines
4 KiB
C
99 lines
4 KiB
C
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//-------------------------------------------------------------------------//
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// BmpRgn.h - Bitmap-to-Region transforms
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//
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// History:
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// 01/31/2000 scotthan created
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//-------------------------------------------------------------------------//
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#ifndef __RGN_H__
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#define __RGN_H__
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//-------------------------------------------------------------------------//
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// CreateBitmapRgn
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//
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// Creates a region based on an arbitrary bitmap, transparency-keyed on a
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// RGB value within a specified tolerance. The key value is optional (-1 ==
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// use the value of the first pixel as the key).
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//
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EXTERN_C HRESULT WINAPI CreateBitmapRgn(
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HBITMAP hbm, int cxOffset, int cyOffset,
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int cx, int cy, BOOL fAlphaChannel, int iAlphaThreshold, COLORREF rgbMask,
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int nMaskTolerance, OUT HRGN *phrgn);
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//-------------------------------------------------------------------------//
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// CreateScaledBitmapRgn
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//
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// Behaves in the same manner as CreateBitmapRgn,
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// except builds a region based on a +scaled+ arbitrary bitmap.
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EXTERN_C HRGN WINAPI CreateScaledBitmapRgn(
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HBITMAP hbm, int cx, int cy, COLORREF rgbMask, int nMaskTolerance );
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//-------------------------------------------------------------------------//
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// CreateTextRgn
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//
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// Creates a region based on a text string in the indicated font.
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//
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EXTERN_C HRGN WINAPI CreateTextRgn( HFONT hf, LPCTSTR pszText );
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//-------------------------------------------------------------------------//
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// AddToCompositeRgn
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//
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// Wraps CombineRgn by managing composite creation and positioning
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// the source region (which is permanently offset). Returns one of:
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// NULLREGION, SIMPLEREGION, COMPLEXREGION, ERROR.
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//
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EXTERN_C int WINAPI AddToCompositeRgn(
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HRGN* phrgnComposite, HRGN hrgnSrc, int cxOffset, int cyOffset );
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//-------------------------------------------------------------------------//
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// RemoveFromCompositeRgn
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//
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// Wraps CombineRgn by managing removal of rectangular region from
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// an existing destination region. Returns one of:
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// NULLREGION, SIMPLEREGION, COMPLEXREGION, ERROR.
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//
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EXTERN_C int WINAPI RemoveFromCompositeRgn( HRGN hrgnDest, LPCRECT prcRemove );
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//-------------------------------------------------------------------------//
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// CreateTiledRectRgn
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//
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// Returns a rectangular region composed of region tiles.
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//
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EXTERN_C HRGN WINAPI CreateTiledRectRgn(
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HRGN hrgnTile, int cxTile, int cyTile, int cxBound, int cyBound );
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//-------------------------------------------------------------------------//
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// Region utilities:
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//
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EXTERN_C HRGN WINAPI _DupRgn( HRGN hrgnSrc );
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//-------------------------------------------------------------------------//
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// hit-testing
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#define HTR_NORESIZE_USESEGCODE 0
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#define HTR_NORESIZE_RETDEFAULT -1
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struct HITTESTRGN
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{
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HRGN hrgn; // test region
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POINT pt; // test point
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WORD wSegCode; // raw grid code, in the form of HTTOP, HTLEFT, HTTOPLEFT, etc. This speeds calcs
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WORD wDefault; // return code on hit failure.
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BOOL fCaptionAtTop; // interpret hits in top grid segs as a caption hit.
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UINT cxLeftMargin; // width of left resizing margin, HTR_NORESIZE_USESEGCODE, or HTR_NORESIZE_USEDEFAULTCODE
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UINT cyTopMargin; // height of top resizing margin, HTR_NORESIZE_USESEGCODE, or HTR_NORESIZE_USEDEFAULTCODE
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UINT cxRightMargin; // width of right resizing margin, HTR_NORESIZE_USESEGCODE, or HTR_NORESIZE_USEDEFAULTCODE
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UINT cyBottomMargin;// height of bottom resizing margin, HTR_NORESIZE_USESEGCODE, or HTR_NORESIZE_USEDEFAULTCODE
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};
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EXTERN_C WORD WINAPI _DefaultHitCodeFromSegCode( BOOL fHasCaption, WORD wSegHTcode );
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//-------------------------------------------------------------------------//
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// Stretch/Tile rects from original region and create a new one
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EXTERN_C HRESULT WINAPI _ScaleRectsAndCreateRegion(RGNDATA *pCustomRgnData,
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const RECT *pBoundRect, MARGINS *pMargins, SIZE *pszSrcImage, HRGN *pHrgn);
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//-------------------------------------------------------------------------//
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#ifdef _DEBUG
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void RegionDebug(HRGN hrgn);
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#endif
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#endif __RGN_H__
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