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bitmap.h
00001 /** @file bitmap.h */ 00002 #ifndef BITMAP_H_ 00003 #define BITMAP_H_ 00004 00005 #include "mbed.h" 00006 #include "lcd.h " 00007 00008 /** File info structure 00009 */ 00010 struct sBitmapInfo { 00011 uint32_t rows; /**< Number if rows in bitmap. */ 00012 uint32_t cols; /**< Number of colums in bitmap. */ 00013 uint32_t offset; 00014 uint16_t bitsPP; 00015 }; 00016 00017 /** bitmapImage class 00018 * 00019 * This class is used for drawing BMP images. 00020 */ 00021 class bitmapImage { 00022 private: 00023 char *filename; 00024 FILE *fp; 00025 unsigned long fileSize; /**< BMP file size. */ 00026 00027 /** Read integer value from file 00028 * 00029 * @param offset Byte offset. 00030 * @param n Number of bytes. 00031 * @returns Long integer. 00032 */ 00033 uint32_t readImageInfo(long offset, int n); 00034 public: 00035 sBitmapInfo fileInfo; /**< File info */ 00036 00037 /** Open BMP bitmap file 00038 * 00039 * @param *inputFilename Path to BMP file. 00040 */ 00041 bitmapImage(char *inputFilename); 00042 00043 ~bitmapImage(); 00044 00045 /** Draw bitmap to the LCD 00046 * 00047 * \note There is no image buffer in this class instead the image 00048 * is read from the fs every time it's drawn. This should 00049 * be still fast enough as mBeds flash is still faster than 00050 * the LCD. 00051 * 00052 * \warning This class doesn't understand padding so images must be 00053 * resized to size where paddings isn't needed. Also because 00054 * of one bit BMP format the iamge width should be divisiable 00055 * by 8. 00056 * 00057 * @param *glcd Reference to gfxLcd object. 00058 * @param xOffset Start drawing from point x. 00059 * @param yOffset Start drawing from point y. 00060 */ 00061 void drawImage(gfxLcd *glcd, int xOffset, int yOffset); 00062 }; 00063 #endif 00064
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