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64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
#ifndef _ImageCache_h_
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#define _ImageCache_h_
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#include <CtrlLib/CtrlLib.h>
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NAMESPACE_UPP
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class ImageCache
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{
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private:
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// the image buffer
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ImageBuffer imageBuffer;
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// Image position inside buffer
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int hPos, vPos;
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// flag indicating image is valid inside cache
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bool valid;
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// background color for clearing
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RGBA bkColor;
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public:
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// constructor
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ImageCache();
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// destructor
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~ImageCache();
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// initializes the cache
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void Init(Size const &sz, bool clearBackground = true, const RGBA *bkCol = 0);
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// fills a zone with a given color
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void Fill(Rect const &destRect, const RGBA *color = 0);
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// clears the cache's bacground
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void Clear(const RGBA *color = 0);
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// scrolls the image in cache
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void Scroll(const Size &amount, bool clearBackground = true, const RGBA *bkCol = 0);
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// copies an image onto cache at a given position
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void Copy(Point const &destPoint, const Rect &srcRect, Image const &img);
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void Copy(Point const &destPoint, const Rect &srcRect, ImageBuffer &imgBuf);
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// paints the chache on a Draw object
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void Paint(Draw &d, Point const &destPt);
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// gets sizes of cache
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Size const GetSize(void);
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int GetWidth(void) { return GetSize().cx; }
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int GetHeight(void) { return GetSize().cy; }
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// checks for cache validity
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bool IsValid(void) { return !imageBuffer.IsEmpty() && valid ; }
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void SetValid(bool v = true) { if(!imageBuffer.IsEmpty()) valid = v; else valid = false; }
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}; // END Class ImageCache
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END_UPP_NAMESPACE
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#endif
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