/**************************************************************************************************************************************
* Project:       discoverpixy
* Website:       https://github.com/t-moe/discoverpixy
* Authors:       Aaron Schmocker, Timo Lang
* Institution:   BFH Bern University of Applied Sciences
* File:          emulator/qt/ll_tft.cpp
*
* Version History:
* Date			Autor Email			SHA		Changes
* 2015-04-03	timolang@gmail.com	51089aa	Refactored Project Structure for use with emulator
* 2015-04-03	timolang@gmail.com	1f2af9f	Added more tft functions to common and emulator. Fixed eventloop.
* 2015-04-03	timolang@gmail.com	1aa9194	Fixed Drawing of rects in Emulator. Got frames from pixy to emulator. Slooooow.
* 2015-04-27	aaron@duckpond.ch	aed90ef	Drawcircle added (emulator)
* 2015-04-27	timolang@gmail.com	e249fb2	Added font support
* 2015-05-15	timolang@gmail.com	b08a897	Added tft method to draw a bmp from filesystem. Added another font to emulator.
* 2015-06-07	timolang@gmail.com	4b5768c	Improved Comments in whole emulator. Finalized emulator section in docu.
*
**************************************************************************************************************************************/

#include "mainwindow.h"

extern "C" {
#include "ll_tft.h"
}

MainWindow* mainwindow;

bool ll_tft_init()
{
    mainwindow = new MainWindow(); //create the designed window
    mainwindow->show(); //open it (non blocking)
    return true;

}

//the following functions redirect the call to the mainwindow, to a function with the same signature

void ll_tft_draw_line(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
{
    mainwindow->draw_line(x1, y1, x2, y2, color);
}

void ll_tft_clear(uint16_t color)
{
    mainwindow->clear(color);
}

void ll_tft_draw_pixel(uint16_t x, uint16_t y, uint16_t color)
{
    mainwindow->draw_pixel(x, y, color);
}

void ll_tft_draw_rectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
{
    mainwindow->draw_rectangle(x1, y1, x2, y2, color);
}

void ll_tft_fill_rectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
{
    mainwindow->fill_rectangle(x1, y1, x2, y2, color);
}

void ll_tft_draw_bitmap_unscaled(uint16_t x, uint16_t y, uint16_t width, uint16_t height, const uint16_t* dat)
{
    mainwindow->draw_bitmap_unscaled(x, y, width, height, dat);
}

void ll_tft_draw_circle(uint16_t x, uint16_t y, uint16_t r, uint16_t color)
{
    mainwindow->draw_circle(x, y, r, color);
}

uint8_t ll_tft_num_fonts()
{
    return 2; //we have two fonts (see below)
}

//Helper function to get the QFont to the corresponding font number
//Note: only return monospaced fonts!!!
QFont get_font(uint8_t fontnum)
{
    switch(fontnum) {
        case 0:
            return QFont("Courier New",8);
        case 1:
            return QFont("Courier New",14);
        default:
        return QFont();
    }
}


uint8_t ll_tft_font_height(uint8_t fontnum)
{
    QFont f = get_font(fontnum);

    if (f == QFont()) {
        return -1;
    }

    QFontMetrics m(f); //use font metcris object to calculate height of font
    return m.height();
}

uint8_t ll_tft_font_width(uint8_t fontnum)
{
    QFont f = get_font(fontnum);

    if (f == QFont()) {
        return -1;
    }

    QFontMetrics m(f); //use font metcris object to calculate width of font
    return m.averageCharWidth();
}

void ll_tft_draw_char(uint16_t x, uint16_t y, uint16_t color, uint16_t bgcolor, uint8_t font, char c)
{
    QFont f = get_font(font);

    if (f == QFont()) {
        return;    //if the font is the default-font, we want to abort.
    }

    mainwindow->draw_char(x, y, color, bgcolor, f, c);
}