144 lines
5.1 KiB
C++
144 lines
5.1 KiB
C++
//-------------------------------------------------------------------------//
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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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typedef struct _MARGINS
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{
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int cxLeftWidth; // width of left border that retains its size
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int cxRightWidth; // width of right border that retains its size
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int cyTopHeight; // height of top border that retains its size
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int cyBottomHeight; // height of bottom border that retains its size
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} MARGINS, *PMARGINS;
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//---------------------------------------------------------------------------
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enum GRIDNUM
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{
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GN_LEFTTOP = 0,
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GN_MIDDLETOP = 1,
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GN_RIGHTTOP = 2,
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GN_LEFTMIDDLE = 3,
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GN_MIDDLEMIDDLE = 4,
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GN_RIGHTMIDDLE = 5,
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GN_LEFTBOTTOM = 6,
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GN_MIDDLEBOTTOM = 7,
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GN_RIGHTBOTTOM = 8
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};
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#define REVERSE3(c) ((RED(c) << 16) | (GREEN(c) << 8) | BLUE(c))
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#define RED(c) GetRValue(c)
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#define GREEN(c) GetGValue(c)
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#define BLUE(c) GetBValue(c)
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#define ALPHACHANNEL(c) BYTE((c) >> 24)
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#define DIBDATA(infohdr) (((BYTE *)(infohdr)) + infohdr->biSize + \
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infohdr->biClrUsed*sizeof(RGBQUAD))
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//------------------------------------------------------------------------------------
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class CBitmapPixels
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{
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public:
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CBitmapPixels();
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~CBitmapPixels();
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//---- "OpenBitmap()" returns a ptr to pixel values in bitmap. ----
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//---- Rows go from bottom to top; Colums go from left to right. ----
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//---- IMPORTANT: pixel DWORDS have RGB bytes reversed from COLORREF ----
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HRESULT OpenBitmap(HDC hdc, HBITMAP bitmap, BOOL fForceRGB32,
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DWORD OUT **pPixels, OPTIONAL OUT int *piWidth=NULL, OPTIONAL OUT int *piHeight=NULL,
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OPTIONAL OUT int *piBytesPerPixel=NULL, OPTIONAL OUT int *piBytesPerRow=NULL);
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void CloseBitmap(HDC hdc, HBITMAP hBitmap);
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//---- public data ----
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BITMAPINFOHEADER *_hdrBitmap;
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protected:
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//---- private data ----
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int _iWidth;
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int _iHeight;
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};
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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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EXTERN_C WORD WINAPI _HitTestRgn( HRGN hrgn, POINT pt, WORD wSegmentHTCode,
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BOOL fHasCaption, UINT cxMargin, UINT cyMargin );
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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, 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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