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