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#ifndef _PIMAGE_H
#define _PIMAGE_H
class Adafruit_GFX;
#if defined(__SD_H__) // Arduino SD library
/// This class mimics Processing's PImage, but with fewer
/// capabilities. It allows an image stored in the SD card to be
/// drawn to the display.
/// @author Enrico Gueli <enrico.gueli@gmail.com>
class PImage {
public:
PImage() :
_valid(false),
_bmpWidth(0),
_bmpHeight(0) { }
void draw(Adafruit_GFX & glcd, int16_t x, int16_t y);
static PImage loadImage(const char * fileName);
bool isValid() { return _valid; }
int width() { return _bmpWidth; }
int height() { return _bmpHeight; }
private:
friend class Adafruit_GFX;
File _bmpFile;
int _bmpWidth, _bmpHeight; // W+H in pixels
uint8_t _bmpDepth; // Bit depth (currently must be 24)
uint32_t _bmpImageoffset; // Start of image data in file
uint32_t _rowSize; // Not always = bmpWidth; may have padding
bool _flip;
bool _valid;
PImage(File & bmpFile, int bmpWidth, int bmpHeight, uint8_t bmpDepth, uint32_t bmpImageoffset, uint32_t rowSize, bool flip) :
_bmpFile(bmpFile),
_bmpWidth(bmpWidth),
_bmpHeight(bmpHeight),
_bmpDepth(bmpDepth),
_bmpImageoffset(bmpImageoffset),
_rowSize(rowSize),
_flip(flip),
_valid(true) // since Adafruit_GFX is friend, we could just let it write the variables and save some CPU cycles
{ }
static uint16_t read16(File f);
static uint32_t read32(File f);
// TODO close the file in ~PImage and PImage(const PImage&)
};
#endif
#endif // _PIMAGE_H
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