acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
Smooth_font.h (2192B)
      1  // Coded by Bodmer 10/2/18, see license in root directory.
      2  // This is part of the TFT_eSPI class and is associated with anti-aliased font functions
      3 
      4  public:
      5 
      6   // These are for the new anti-aliased fonts
      7   void     loadFont(const uint8_t array[]);
      8 #ifdef FONT_FS_AVAILABLE
      9   void     loadFont(String fontName, fs::FS &ffs);
     10 #endif
     11   void     loadFont(String fontName, bool flash = true);
     12   void     unloadFont( void );
     13   bool     getUnicodeIndex(uint16_t unicode, uint16_t *index);
     14 
     15   virtual void drawGlyph(uint16_t code);
     16 
     17   void     showFont(uint32_t td);
     18 
     19  // This is for the whole font
     20   typedef struct
     21   {
     22     const uint8_t* gArray;           //array start pointer
     23     uint16_t gCount;                 // Total number of characters
     24     uint16_t yAdvance;               // Line advance
     25     uint16_t spaceWidth;             // Width of a space character
     26     int16_t  ascent;                 // Height of top of 'd' above baseline, other characters may be taller
     27     int16_t  descent;                // Offset to bottom of 'p', other characters may have a larger descent
     28     uint16_t maxAscent;              // Maximum ascent found in font
     29     uint16_t maxDescent;             // Maximum descent found in font
     30   } fontMetrics;
     31 
     32 fontMetrics gFont = { nullptr, 0, 0, 0, 0, 0, 0, 0 };
     33 
     34   // These are for the metrics for each individual glyph (so we don't need to seek this in file and waste time)
     35   uint16_t* gUnicode = NULL;  //UTF-16 code, the codes are searched so do not need to be sequential
     36   uint8_t*  gHeight = NULL;   //cheight
     37   uint8_t*  gWidth = NULL;    //cwidth
     38   uint8_t*  gxAdvance = NULL; //setWidth
     39   int16_t*  gdY = NULL;       //topExtent
     40   int8_t*   gdX = NULL;       //leftExtent
     41   uint32_t* gBitmap = NULL;   //file pointer to greyscale bitmap
     42 
     43   bool     fontLoaded = false; // Flags when a anti-aliased font is loaded
     44 
     45 #ifdef FONT_FS_AVAILABLE
     46   fs::File fontFile;
     47   fs::FS   &fontFS  = SPIFFS;
     48   bool     spiffs   = true;
     49   bool     fs_font = false;    // For ESP32/8266 use smooth font file or FLASH (PROGMEM) array
     50 
     51 #else
     52   bool     fontFile = true;
     53 #endif
     54 
     55   private:
     56 
     57   void     loadMetrics(void);
     58   uint32_t readInt32(void);
     59 
     60   uint8_t* fontPtr = nullptr;
     61