Richard Parker / EALCD

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images/EAImage.h@7:6cf21b018420, 2010-11-01 (annotated)

Committer:
richardparker
Date:
Mon Nov 01 13:07:40 2010 +0000
Revision:
7:6cf21b018420
Embedded Artists LCD panel:- Version 0.7

Who changed what in which revision?

UserRevisionLine numberNew contents of line
richardparker 7:6cf21b018420 1 // Copyright 2010 Richard Parker
richardparker 7:6cf21b018420 2
richardparker 7:6cf21b018420 3 #ifndef MBED_EAIMAGE_H
richardparker 7:6cf21b018420 4 #define MBED_EAIMAGE_H
richardparker 7:6cf21b018420 5
richardparker 7:6cf21b018420 6 #include "mbed.h"
richardparker 7:6cf21b018420 7 #include <string>
richardparker 7:6cf21b018420 8
richardparker 7:6cf21b018420 9 #include "EAWidget.h"
richardparker 7:6cf21b018420 10
richardparker 7:6cf21b018420 11 class EALCD;
richardparker 7:6cf21b018420 12 class EAColor;
richardparker 7:6cf21b018420 13
richardparker 7:6cf21b018420 14 /**
richardparker 7:6cf21b018420 15 * Class to handle loading and displaying an image.
richardparker 7:6cf21b018420 16 * @author Richard Parker
richardparker 7:6cf21b018420 17 */
richardparker 7:6cf21b018420 18 class EAImage: public EAWidget
richardparker 7:6cf21b018420 19 {
richardparker 7:6cf21b018420 20 public:
richardparker 7:6cf21b018420 21 struct EABMPHeader {
richardparker 7:6cf21b018420 22 unsigned int headerSize;
richardparker 7:6cf21b018420 23 unsigned int width;
richardparker 7:6cf21b018420 24 unsigned int height;
richardparker 7:6cf21b018420 25 unsigned short noColorPlanes;
richardparker 7:6cf21b018420 26 unsigned short bitsPerPixel;
richardparker 7:6cf21b018420 27 unsigned int compressionType;
richardparker 7:6cf21b018420 28 unsigned int bmpSize;
richardparker 7:6cf21b018420 29 unsigned int horizontalRes;
richardparker 7:6cf21b018420 30 unsigned int verticalRes;
richardparker 7:6cf21b018420 31 unsigned int noColors;
richardparker 7:6cf21b018420 32 unsigned int noImportantColors;
richardparker 7:6cf21b018420 33 };
richardparker 7:6cf21b018420 34
richardparker 7:6cf21b018420 35 EAImage();
richardparker 7:6cf21b018420 36 ~EAImage();
richardparker 7:6cf21b018420 37
richardparker 7:6cf21b018420 38 bool load(const std::string& path);
richardparker 7:6cf21b018420 39 void unload();
richardparker 7:6cf21b018420 40
richardparker 7:6cf21b018420 41 inline const std::string& path() const { return _path; }
richardparker 7:6cf21b018420 42
richardparker 7:6cf21b018420 43 inline bool isValid() const { return (_path.empty() == false); }
richardparker 7:6cf21b018420 44
richardparker 7:6cf21b018420 45 virtual void paint(EALCD& lcd);
richardparker 7:6cf21b018420 46 virtual void paint(EALCD& lcd, unsigned int x, unsigned int y, unsigned int w, unsigned int h);
richardparker 7:6cf21b018420 47
richardparker 7:6cf21b018420 48 inline const EABMPHeader& info() { return _header; }
richardparker 7:6cf21b018420 49
richardparker 7:6cf21b018420 50 inline bool isMask() { return _mask; }
richardparker 7:6cf21b018420 51 inline void setMask(bool value) { _mask = value; }
richardparker 7:6cf21b018420 52
richardparker 7:6cf21b018420 53 private:
richardparker 7:6cf21b018420 54 std::string _path;
richardparker 7:6cf21b018420 55 EAColor* _palette;
richardparker 7:6cf21b018420 56 unsigned int _dataOffset;
richardparker 7:6cf21b018420 57 EABMPHeader _header;
richardparker 7:6cf21b018420 58 bool _mask;
richardparker 7:6cf21b018420 59
richardparker 7:6cf21b018420 60 bool _loadHeader(const string& path);
richardparker 7:6cf21b018420 61 bool _loadPalette(FILE* fp);
richardparker 7:6cf21b018420 62
richardparker 7:6cf21b018420 63 int _wordsInRow();
richardparker 7:6cf21b018420 64 int _wordForX(unsigned int x);
richardparker 7:6cf21b018420 65 int _xWordOffset(unsigned int x);
richardparker 7:6cf21b018420 66 unsigned short _getColourAtOffset(unsigned int word, int offset);
richardparker 7:6cf21b018420 67
richardparker 7:6cf21b018420 68 int _fseek(FILE* stream, long int offset, int origin);
richardparker 7:6cf21b018420 69 size_t _fread(void* ptr, size_t size, size_t count, FILE* stream);
richardparker 7:6cf21b018420 70 int _feof(FILE* stream);
richardparker 7:6cf21b018420 71 };
richardparker 7:6cf21b018420 72
richardparker 7:6cf21b018420 73 #endif