ugfx.h

/* Copyright (C) 2016 Sean D'Epagnier <seandepagnier@gmail.com>
 *
 * This Program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 */


unsigned int color(int r, int g, int b);

class surface
{
public:
    surface(surface *s);
    surface(int w, int h, int internal_bypp, const char *data32);
    surface(const char* filename, int bypp);
    virtual ~surface();

    void load(const char *filename, int bypp);
    void store_grey(const char *filename);
    void blit(surface *src, int xoff, int yoff, bool flip=false);
    void magnify(surface *src, int factor);
    void putpixel(int x, int y, unsigned int c);
    void line(int x1, int y1, int x2, int y2, unsigned int c);
    void hline(int x1, int x2, int y, unsigned int c);
    void vline(int x, int y1, int y2, unsigned int c);
    void box(int x1, int y1, int x2, int y2, unsigned int c);
    void invert(int x1, int y1, int x2, int y2);
    void fill(unsigned int c);
    virtual void refresh() {}
    void binary_write_sw(int sclk, int mosi);

    int width, height, bypp;
    char *p;
    int getpixel(int x, int y);
    char *ptr() { return p; }

    int xoffset, yoffset, line_length;

protected:
    int allocated_size;
    surface() {}
};

#ifdef __linux__
#include <linux/fb.h>

// linux framebuffer surface
class screen : public surface
{
public:
    screen(const char *device);
    virtual ~screen();

    struct fb_fix_screeninfo finfo;
    struct fb_var_screeninfo vinfo;

    char *fbp;
    int fbfd;
    long int screensize;
};
#endif

// nokia5110 spi device
class spilcd;
class spiscreen : public surface
{
public:
    spiscreen(int driver=-1);
    virtual ~spiscreen();
    
    void refresh();

    int contrast;

private:
    spilcd *disp;
};