/****************/
/* thello.cpp   */
/****************/
// Ohjelma tyypillisten kontrollien testaamiseksi /vl-96
// Projektiin vain tämä tiedosto.

#include <afxwin.h>

#define MY_BUTTON 175           /* Nappulan tunniste                       */
#define MY_EDIT   176           /* Tekstikentän (Edit) tunniste            */
#define MY_BAR    177           /* Oman likusäätimen tunniste              */
#define MY_STATIC 178           /* 1. vakiotekstin tunniste = liun arvo    */
#define MY_BARS   179           /*  apuvakio seuraaville                   */
#define MY_SVER   (MY_BARS+SB_VERT) /* 2. tekstikenän tunniste = pystyliun */
#define MY_SHOR   (MY_BARS+SB_HORZ) /* 3. tekstikentän tunniste = vaakaliun*/

#define MIN_BAR    0
#define MAX_BAR   50

//------------------------------------------------------------------------------
// VAROKAA!!! MFC:n Rect on rajat, ei nurkka ja koko kuten OWL:ssä
class TRect : public CRect {
public:
  TRect(int x,int y,int dx, int dy) : CRect(x,y,x+dx,y+dy) {};
};

//------------------------------------------------------------------------------
class CIntLabel : public CStatic { // Oma luokka kokonaislukuikkunalle
  int value;
public:
  BOOL PreCreateWindow(CREATESTRUCT &cs) {
     cs.style |= SS_RIGHT;
     value = 0;
     return TRUE;
  }
  int set(int i) { char s[20];
    value = i; itoa(i,s,10); SetWindowText(s); return i;
  }
  int operator=(int i)  { return set(i);                       }
  operator int()        { return value;                        }
  int operator++()      { set(value+1); return value;          }
  int operator++(int)   { int i=value; set(value+1); return i; }
  int operator+=(int i) { set(value+i); return value;          }
  int operator-=(int i) { set(value-i); return value;          }
};

#define VIS (WS_CHILD | WS_VISIBLE)

//------------------------------------------------------------------------------
class CMainWindow : public CFrameWnd {
  CButton    my_button;
  CIntLabel  my_value,my_shor,my_sver;
  CEdit      my_edit;
  CScrollBar my_bar;
public:
  CMainWindow() {
    Create(NULL,"Hello World!",WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL);
    MoveWindow(50,50,300,300);
    my_button.Create("Windows Hello",VIS,TRect(10, 30,100, 30),this,MY_BUTTON);
    my_value.Create("0",VIS,TRect( 40, 70, 40, 30),this,MY_STATIC);
    my_shor.Create ("0",VIS,TRect( 80, 70, 40, 30),this,MY_SHOR);
    my_sver.Create ("0",VIS,TRect(120, 70, 40, 30),this,MY_SVER);
    my_edit.Create (VIS | WS_BORDER,TRect( 10,110,100, 40),this,MY_EDIT);
    my_bar.Create (VIS | SBS_VERT ,TRect(200, 10, 30,200),this,MY_BAR);
    my_bar.SetScrollRange(MIN_BAR,MAX_BAR);  // Tämä toimii MFC:ssä
    SetScrollRange(SB_VERT,MIN_BAR,2*MAX_BAR,TRUE);
    SetScrollRange(SB_HORZ,MIN_BAR,3*MAX_BAR,TRUE);
  }
  afx_msg void OnPaint() { CPaintDC dc(this); dc.TextOut(10,10,"Hello world!"); }
  afx_msg void BNMyButtonClicked() { my_value++; }
  afx_msg void ENMyEditChange()    { my_value++; }
  afx_msg void ENMyEditKillFocus() {
    char s[100];
    my_edit.GetWindowText(s,sizeof(s));
    SetWindowText(s);
  }
  afx_msg void OnVScroll(UINT nCode, UINT nPos, CScrollBar *pScrollBar);
  afx_msg void OnHScroll(UINT nCode, UINT nPos, CScrollBar *pScrollBar);
  DECLARE_MESSAGE_MAP()
};

int NewScrollVal(int val, int nCode, int nPos)
{
  switch ( nCode ) { // HUOM!  Päätyjen ylitykset huolehtimatta!
    case SB_BOTTOM        : val = MAX_BAR; break;
    case SB_TOP           : val = MIN_BAR; break;
    case SB_LINEDOWN      : val++;         break;
    case SB_PAGEDOWN      : val+=10;       break;
    case SB_LINEUP        : val--;         break;
    case SB_PAGEUP        : val-=10;       break;
    case SB_THUMBPOSITION :
    case SB_THUMBTRACK    : val = nPos;    break;
  }
  return val;
}

void CMainWindow::OnVScroll(UINT nCode, UINT nPos, CScrollBar *pScrollBar)
{
  my_sver = NewScrollVal(my_sver,nCode,nPos);
  if ( pScrollBar == NULL ) SetScrollPos(SB_VERT,my_sver,TRUE); // Ikkunan bar
  else pScrollBar->SetScrollPos(my_sver,TRUE);                  // Oma bar
}

void CMainWindow::OnHScroll(UINT nCode, UINT nPos, CScrollBar *pScrollBar)
{
  my_shor = NewScrollVal(my_shor,nCode,nPos);
  if ( pScrollBar == NULL ) SetScrollPos(SB_HORZ,my_shor,TRUE); // Ikkunan bar
  else pScrollBar->SetScrollPos(my_shor,TRUE);                  // Oma bar
}


BEGIN_MESSAGE_MAP( CMainWindow, CFrameWnd )
  ON_WM_PAINT()
  ON_COMMAND(MY_BUTTON, BNMyButtonClicked)
  ON_EN_CHANGE(MY_EDIT,ENMyEditChange)
  ON_EN_KILLFOCUS(MY_EDIT,ENMyEditKillFocus)
  ON_WM_VSCROLL()
  ON_WM_HSCROLL()
END_MESSAGE_MAP()



//------------------------------------------------------------------------------
class CTHelloApp : public CWinApp {
public:
  virtual BOOL InitInstance() {
    m_pMainWnd = new CMainWindow();
	  m_pMainWnd->ShowWindow(m_nCmdShow);
	  m_pMainWnd->UpdateWindow();
	  return TRUE;
  }
};

CTHelloApp THelloApp;