axmol/cocos2dx/platform/uphone/CCXUIImage_uphone.h

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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#ifndef __PLATFORM_UPHONE_UIIMAGE_H__
#define __PLATFORM_UPHONE_UIIMAGE_H__

#include <string>
#include "ccxCommon.h"
#include "CCRenderTexture.h"

class TBitmap;
namespace   cocos2d {

// typedef enum {
// 	kImageTypePNG = 0,
// 	kImageTypeJPG = 1,
// } CCXImageType;

typedef struct
{
	unsigned int	height;
	unsigned int	width;
	int				bitsPerComponent;
	bool            hasAlpha;
	bool			isPremultipliedAlpha;
	unsigned char   *data;
} tImageInfo;

class CCX_DLL UIImage
{
public:
	UIImage(void);
	UIImage(TBitmap *bitmap);
	
	UIImage(int nX, int nY, void *buffer);
	~UIImage(void);

	/** load the image from the specified path 
	    @imageType: the type of image, now only support tow types
		            kImageFormatPNG -> png
					kImageFormatJPG -> jpeg
	 */
	bool initWithContentsOfFile(const std::string &strPath, tImageFormat imageType = kImageFormatPNG);
	bool initWithData(unsigned char *pBuffer, int nLength);
	bool initWithBuffer(int tx, int ty, unsigned char *pBuffer);

	bool save(const std::string &strFileName, int nFormat);

	/** get the image width */
	unsigned int width(void);
	/** get the image height */
	unsigned int height(void);

	/** whether or not the image has alpha channel */
	bool isAlphaPixelFormat(void);
	/** whether or not the r, g, b channels are premultiplied by alpha channel */
	bool isPremultipliedAlpha(void);

	/** get the bit depth of each color channel */
	int CGImageGetBitsPerComponent(void);
	/** the source color space for the image, or 0 if the image is an image mask */
	int CGImageGetColorSpace(void);

	/** get the image data */
	unsigned char* getData(void);

private:
    bool loadPng(const char* strFileName);
	bool loadPngFromStream(unsigned char *data, int nLength);
	bool loadJpg(const char *strFileName);

private:
	TBitmap *m_pBitmap;
	tImageInfo m_imageInfo;
};
}//namespace   cocos2d 

#endif // __PLATFORM_UPHONE_UIIMAGE_H__