/*#############################################################

Program Name    : ex2_F469NI_TSFaces
Author          : Grant Phillips
Date Modified   : 22/09/2016
Compiler        : ARMmbed
Tested On       : DISCO-F469NI

Description     : Example program that demonstrates the use of
                  the DSI TFT LCD touchscreen panel.  There 
                  are 3 buttons to select which facial expression 
                  should be displayed.

Requirements    : * DISCO-F469NI Board
              
Circuit         : * NONE

##############################################################*/

#include "mbed.h"
#include "TS_DISCO_F469NI.h"
#include "LCD_DISCO_F469NI.h"

void DrawSmile(void);
void DrawSad(void);
void DrawFrown(void);
void DrawSmileButton(void);
void DrawFrownButton(void);
void DrawSadButton(void);

LCD_DISCO_F469NI lcd;       //Create a LCD_DISCO_F469NI object
TS_DISCO_F469NI ts;         //Create a TS_DISCO_F469NI object

int main()
{
    TS_StateTypeDef TS_State;       //create a variable to store the state of the touchscreen
    uint16_t x, y;
    uint8_t status;
    
    lcd.Clear(LCD_COLOR_BLACK);
  
    status = ts.Init(800, 480);     //initialize the touchscreen for a 240x320 display
    if (status != TS_OK) {          //test if the initialization was ERROR
        lcd.Clear(LCD_COLOR_RED);
        lcd.SetBackColor(LCD_COLOR_RED);
        lcd.SetTextColor(LCD_COLOR_WHITE);
        lcd.DisplayStringAt(0, LINE(5), (uint8_t *)"TOUCHSCREEN", CENTER_MODE);
        lcd.DisplayStringAt(0, LINE(6), (uint8_t *)"INIT FAIL", CENTER_MODE);
        while(1); //do not continue if there is an error
    }
    
    DrawSmile();
    DrawSmileButton();
    DrawFrownButton();
    DrawSadButton();
    
    while(1) {
        ts.GetState(&TS_State);                                             //Read the status of the touchscreen
        if (TS_State.touchDetected) {                                       //if the screen was touched
            x = TS_State.touchX[0];                                         //read the x value
            y = TS_State.touchY[0];                                         //read the y value
            if((x >= 60) && (x <= 180) && (y >= 140) && (y <= 180))         //if the x and y touch position is within the bounds of the Smile button
                DrawSmile();
            else if((x >= 60) && (x <= 180) && (y >= 200) && (y <= 240))    //if the x and y touch position is within the bounds of the Frown button
                DrawFrown();
            else if((x >= 60) && (x <= 180) && (y >= 260) && (y <= 300))    //if the x and y touch position is within the bounds of the Sad button
                DrawSad();
            else {
                //do nothing when not incorrect touch position
            }
            wait(0.01);                 //delay to prevent contact bounce on the screen
        }
    }
}


void DrawSmile(void)
{
    uint16_t x, y;
    x = 120;
    y = 60;
    
    /* Draw face */
    lcd.SetTextColor(LCD_COLOR_MAGENTA);
    lcd.FillCircle(x,y,50);
    
    /* Draw eyes */
    lcd.SetTextColor(LCD_COLOR_YELLOW);
    lcd.FillCircle(x-20,y-20,8);
    lcd.FillCircle(x+20,y-20,8);
    
    /* Draw mouth */
    lcd.SetTextColor(LCD_COLOR_YELLOW);
    lcd.DrawLine(x-10,y+20,x+10,y+20);
    lcd.DrawLine(x-10,y+20,x-20,y+10);
    lcd.DrawLine(x+10,y+20,x+20,y+10);
}


void DrawSad(void)
{
    uint16_t x, y;
    x = 120;
    y = 60;
    
    /* Draw face */
    lcd.SetTextColor(LCD_COLOR_MAGENTA);
    lcd.FillCircle(x,y,50);
    
    /* Draw eyes */
    lcd.SetTextColor(LCD_COLOR_YELLOW);
    lcd.FillCircle(x-20,y-20,8);
    lcd.FillCircle(x+20,y-20,8);
    
    /* Draw mouth */
    lcd.SetTextColor(LCD_COLOR_YELLOW);
    lcd.DrawLine(x-10,y+10,x+10,y+10);
    lcd.DrawLine(x-10,y+10,x-20,y+20);
    lcd.DrawLine(x+10,y+10,x+20,y+20);
}


void DrawFrown(void)
{
    uint16_t x, y;
    x = 120;
    y = 60;
    
    /* Draw face */
    lcd.SetTextColor(LCD_COLOR_MAGENTA);
    lcd.FillCircle(x,y,50);
    
    /* Draw eyes */
    lcd.SetTextColor(LCD_COLOR_YELLOW);
    lcd.FillCircle(x-20,y-20,8);
    lcd.FillCircle(x+20,y-20,8);
    
    /* Draw mouth */
    lcd.SetTextColor(LCD_COLOR_YELLOW);
    lcd.DrawLine(x-20,y+15,x+20,y+15);
}


void DrawSmileButton(void)
{
    uint16_t x, y;
    x = 60;
    y = 140;
    
    /* Draw rectangle for button */
    lcd.SetTextColor(LCD_COLOR_WHITE);
    lcd.FillRect(x, y, 120, 40);
    
    /* Draw text */
    lcd.SetFont(&Font24);
    lcd.SetTextColor(LCD_COLOR_BLUE); 
    lcd.DisplayStringAt(75,y+10,(uint8_t *)"SMILE", LEFT_MODE);                  
}


void DrawFrownButton(void)
{
    uint16_t x, y;
    x = 60;
    y = 200;
    
    /* Draw rectangle for button */
    lcd.SetTextColor(LCD_COLOR_WHITE);
    lcd.FillRect(x, y, 120, 40);
    
    /* Draw text */
    lcd.SetFont(&Font24);
    lcd.SetTextColor(LCD_COLOR_BLUE);
    lcd.DisplayStringAt(75,y+10,(uint8_t *)"FROWN", LEFT_MODE);                    
}


void DrawSadButton(void)
{
    uint16_t x, y;
    x = 60;
    y = 260;
    
    /* Draw rectangle for button */
    lcd.SetTextColor(LCD_COLOR_WHITE);
    lcd.FillRect(x, y, 120, 40);
    
    /* Draw text */
    lcd.SetFont(&Font24);
    lcd.SetTextColor(LCD_COLOR_BLUE); 
    lcd.DisplayStringAt(95,y+10,(uint8_t *)"SAD", LEFT_MODE);                   
}