/*********************************************************************
*                SEGGER MICROCONTROLLER SYSTEME GmbH                 *
*        Solutions for real time microcontroller applications        *
**********************************************************************
*                                                                    *
*        (c) 1996 - 2007  SEGGER Microcontroller Systeme GmbH        *
*                                                                    *
*        Internet: www.segger.com    Support:  support@segger.com    *
*                                                                    *
**********************************************************************

** emWin V4.14 - Graphical user interface for embedded applications **
emWin is protected by international copyright laws.   Knowledge of the
source code may not be used to write a similar product.  This file may
only be used in accordance with a license and should not be re-
distributed in any way. We appreciate your understanding and fairness.
----------------------------------------------------------------------
File        : GUIDEMO_Touch
Purpose     : Touch demo
---------------------------END-OF-HEADER------------------------------
*/

#include "GUI.h"
#include "LCD_ConfDefaults.h"      /* valid LCD configuration */
#include "GUIDEMO.h"

#if (GUI_WINSUPPORT && GUI_SUPPORT_TOUCH)

#include "BUTTON.h"
#include "EDIT.h"

#define countof(Obj) (sizeof(Obj)/sizeof(Obj[0]))

/*********************************************************************
*
*       Static functions
*
**********************************************************************
*/

static int _Log2Phys(int l, I32 l0, I32 l1, I32 p0, I32 p1) {
  return p0 + ((p1 - p0) * (l - l0)) / (l1 - l0);
}

static void _Calibrate(int Coord, int Log0, int Log1, int Phys0, int Phys1, int *p0, int *p1) {
  int l0 = 0;
  int l1 = (Coord == GUI_COORD_X) ? LCD_XSIZE - 1 : LCD_YSIZE - 1;
  *p0 = _Log2Phys(l0, Log0, Log1, Phys0, Phys1);
  *p1 = _Log2Phys(l1, Log0, Log1, Phys0, Phys1);
}

/*********************************************************************
*
*       _ExecCalibration
*
**********************************************************************
*/

static void _ExecCalibration(void) {
  int ax_Phys[2],ay_Phys[2];
/* calculate log. Positions */
  int ax[2] = { 15, LCD_XSIZE -1-15};
//  const int ay[2] = { 15, LCD_YSIZE-1-15};
  int ay[2] = { LCD_YSIZE-1-15, 15};
  GUI_TOUCH_SetDefaultCalibration();
/* _Calibrate upper left */
  GUI_SetBkColor(GUI_RED);  
  GUI_Clear();
  GUI_SetColor(GUI_WHITE);  GUI_FillCircle(ax[0], ay[0], 10);
  GUI_SetColor(GUI_RED);    GUI_FillCircle(ax[0], ay[0], 5);
  GUI_SetColor(GUI_WHITE);
  GUI_DispStringAt("Press here", ax[0]+20, ay[0]);
  do {
    GUI_PID_STATE State;
    GUI_TOUCH_GetState(&State);
    if (State.Pressed) {
      ax_Phys[0] = GUI_TOUCH_GetxPhys();
      ay_Phys[0] = GUI_TOUCH_GetyPhys();
      break;
    }
    GUI_Delay (100);
  } while (1);
/* Tell user to release */
  GUI_Clear();
  GUI_DispStringAt("OK", ax[0]+20, ay[0]);
  do {
    GUI_PID_STATE State;
    GUI_TOUCH_GetState(&State);
    if (State.Pressed == 0) {
      break;
    }
    GUI_Delay (100);
  } while (1);
/* _Calibrate lower right */
  GUI_SetBkColor(GUI_RED);  
  GUI_Clear();
  GUI_SetColor(GUI_WHITE);  GUI_FillCircle(ax[1], ay[1], 10);
  GUI_SetColor(GUI_RED);    GUI_FillCircle(ax[1], ay[1], 5);
  GUI_SetColor(GUI_WHITE);
  GUI_SetTextAlign(GUI_TA_RIGHT);
  GUI_DispStringAt("Press here", ax[1]-20, ay[1]);
  do {
    GUI_PID_STATE State;
    GUI_TOUCH_GetState(&State);
    if (State.Pressed) {
      ax_Phys[1] = GUI_TOUCH_GetxPhys();
      ay_Phys[1] = GUI_TOUCH_GetyPhys();
      break;
    }
    GUI_Delay (100);
  } while (1);
  GUI_TOUCH_Calibrate(GUI_COORD_X, ax[0], ax[1], ax_Phys[0], ax_Phys[1]);
  GUI_TOUCH_Calibrate(GUI_COORD_Y, ay[0], ay[1], ay_Phys[0], ay_Phys[1]);
  { /* calculate and display values for configuration file */
    int x0, x1;
    int y0, y1;
    GUI_Clear();
    _Calibrate(GUI_COORD_X, ax[0], ax[1], ax_Phys[0], ax_Phys[1], &x0, &x1);
    _Calibrate(GUI_COORD_Y, ay[0], ay[1], ay_Phys[0], ay_Phys[1], &y0, &y1);
    GUI_DispStringAt("x0: ", 0, 0); GUI_DispDec(x0, 4); GUI_DispNextLine();
    GUI_DispString  ("x1: ");       GUI_DispDec(x1, 4); GUI_DispNextLine();
    GUI_DispString  ("y0: ");       GUI_DispDec(y0, 4); GUI_DispNextLine();
    GUI_DispString  ("y1: ");       GUI_DispDec(y1, 4); GUI_DispNextLine();
    GUI_DispString  ("Please touch display to continue...");
    GUI_Delay(1000);
    do {
      GUI_PID_STATE State;
      GUI_TOUCH_GetState(&State);
      if (State.Pressed)
        break;
      GUI_Delay (10);
    } while (1);
  }
}

/*********************************************************************
*
*       _TestCalibration
*
**********************************************************************
*/

static void _TestCalibration(void) {
  int IdleCnt=0;
  BUTTON_Handle hButton;
  GUI_SetBkColor(GUI_RED);  
  GUI_SetColor(GUI_WHITE);  
  GUI_Clear();
  hButton =  BUTTON_Create( 225, 15, 80, 40, 1, BUTTON_CF_SHOW );
  BUTTON_SetText (hButton, "ABORT");
  BUTTON_SetFont (hButton, &GUI_FontComic18B_ASCII);
  while ((IdleCnt<50) && (GUI_GetKey()==0)) {
    static GUI_PID_STATE StateLast;
    GUI_PID_STATE State;
    GUI_TOUCH_GetState(&State);
    if ((StateLast.Pressed != State.Pressed) && (State.Pressed == 0)) {
      GUI_Clear();
    }
    if ((StateLast.x != State.x) || ((StateLast.y != State.y))) {
      if (State.Pressed) {
        GUI_FillCircle(State.x, State.y, 5);
      }
      StateLast = State;
    }
    if (State.Pressed) {
      IdleCnt =0;
    } else {
      IdleCnt++;
    }
    GUI_Delay (100);
  }
  EDIT_Delete(hButton);
}

/*********************************************************************
*
*       _ExecKeyboard
*
**********************************************************************

This creates a sample keyboard.
The routine returns after ENTER or ESC has been pressed.
*/

#if (LCD_XSIZE == 320) && (LCD_YSIZE == 240)

static char _acText[] = { '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '='
                        ,0, 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P'
                        ,0, 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', 'Q'
                        ,0, 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '