// MsgWnd.cpp

#include "stdafx.h"
#include "MsgWnd.h"
#include "HandCursor.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#endif

#define IDT_WINDOW_TIMER_1 100
#define IDT_WINDOW_TIMER_2 101
#define IDT_WINDOW_TIMER_3 102

IMPLEMENT_DYNAMIC(CMsgWnd, CWnd)
BEGIN_MESSAGE_MAP(CMsgWnd, CWnd)
  //{{AFX_MSG_MAP(CMsgWnd)
  ON_WM_PAINT()
  ON_WM_TIMER()
  ON_WM_MOUSEMOVE()
  ON_WM_ERASEBKGND()
  ON_WM_LBUTTONDOWN()
  ON_WM_LBUTTONUP()
  //}}AFX_MSG_MAP
END_MESSAGE_MAP()

CMsgWnd::CMsgWnd() :
  LButtonDown(false),
  MouseOver(false),
  ShowTime(4000),
  Size(148,120) {

  NONCLIENTMETRICS ncm;
  ncm.cbSize=sizeof(NONCLIENTMETRICS);
  SystemParametersInfo(SPI_GETNONCLIENTMETRICS,0,&ncm,0);
  Font.CreateFontIndirect(&ncm.lfStatusFont);
  ncm.lfStatusFont.lfUnderline=TRUE;
  UFont.CreateFontIndirect(&ncm.lfStatusFont);

  Create(CPoint(0,0), NULL, 0);

  Cursor=HandCursor;
}

BOOL CMsgWnd::PreCreateWindow(CREATESTRUCT& cs) {
static CString sClassName(AfxRegisterWndClass(0));
  cs.lpszClass=sClassName;
  cs.style=WS_POPUP|WS_BORDER;
  cs.dwExStyle|=WS_EX_TOOLWINDOW;
  return CWnd::PreCreateWindow(cs);
}

BOOL CMsgWnd::Create(CPoint pt, CWnd* pParentWnd, UINT nID) {
  BOOL Return=CreateEx(0, NULL, NULL, WS_POPUP|WS_VISIBLE, CRect(pt,CSize(0,0)), pParentWnd, nID);
  CRect Rect(0,0,53,51);
  AC.Create(WS_CHILD|WS_VISIBLE|ACS_CENTER|ACS_AUTOPLAY, Rect, this, 0);
  return Return;
}

// Show window with delay. No delay means show now.
void CMsgWnd::ShowDelayed(UINT msec) {
  Cancel();
  CRect DesktopRect;
  ::SystemParametersInfo(SPI_GETWORKAREA, 0, &DesktopRect, 0);
  if(DesktopRect.Height()!=::GetSystemMetrics(SM_CYSCREEN)) { //Taskbar is horizontal
    Rect.right=DesktopRect.right-10;
    Rect.left=Rect.right-Size.cx;
    if(DesktopRect.top) { //Taskbar is at Top
      UDLR='D';
      Rect.top=Rect.bottom=DesktopRect.top;
    }else{ //Taskbar is at Bottom
      UDLR='U';
      Rect.top=Rect.bottom=DesktopRect.bottom;
    }
  }else{ //Taskbar is vertical
    Rect.bottom=DesktopRect.bottom-10;
    Rect.top=Rect.bottom-Size.cy;
    if(DesktopRect.left) { //Taskbar is on the Left
      UDLR='R';
      Rect.left=Rect.right=DesktopRect.left;
    }else{ //Taskbar is on the Right
      UDLR='L';
      Rect.left=Rect.right=DesktopRect.right;
  } }
  if(msec) SetTimer(IDT_WINDOW_TIMER_1, msec, NULL); // delay: set time
  else      OnTimer(IDT_WINDOW_TIMER_1);             // no delay: show it now
}

void CMsgWnd::OnTimer(UINT nIDEvent) {
  switch(nIDEvent) {
    case IDT_WINDOW_TIMER_1: { // When the window comes up
      switch(UDLR) {
        case 'U': --Rect.top   ; break;
        case 'D': ++Rect.bottom; break;
        case 'L': --Rect.left  ; break;
        case 'R': ++Rect.right ; break;
      }
      if(Rect.Width()==1 || Rect.Height()==1) {
        KillTimer(IDT_WINDOW_TIMER_1);
        SetTimer(IDT_WINDOW_TIMER_1, 10, NULL);
        SetWindowPos(&wndTopMost, Rect.left, Rect.top, Rect.Width(), Rect.Height(), SWP_SHOWWINDOW|SWP_NOACTIVATE);
      }else if(Rect.Width()==Size.cx && Rect.Height()==Size.cy) {
        KillTimer(IDT_WINDOW_TIMER_1);
        SetTimer(IDT_WINDOW_TIMER_2, ShowTime, NULL);
      }else SetWindowPos(0, Rect.left, Rect.top, Rect.Width(), Rect.Height(), SWP_NOZORDER|SWP_NOACTIVATE);
      return;
    }
    case IDT_WINDOW_TIMER_2: {
      KillTimer(IDT_WINDOW_TIMER_2);
      SetTimer(IDT_WINDOW_TIMER_3, 10, NULL);
      return;
    }
    case IDT_WINDOW_TIMER_3: {
      switch(UDLR) {
        case 'U': ++Rect.top   ; break;
        case 'D': --Rect.bottom; break;
        case 'L': ++Rect.left  ; break;
        case 'R': --Rect.right ; break;
      }
      if(!Rect.Width() || !Rect.Height()) Cancel();
      else SetWindowPos(0, Rect.left, Rect.top, Rect.Width(), Rect.Height(), SWP_NOZORDER|SWP_NOACTIVATE);
      return;
} } }

BOOL CMsgWnd::OnEraseBkgnd(CDC* pDC) {return true;}//CWnd::OnEraseBkgnd(pDC);

void CMsgWnd::OnPaint() {
  CPaintDC dc(this);
  CFont* OldFont=dc.SelectObject(MouseOver ? &UFont : &Font);
  dc.FillSolidRect(&dc.m_ps.rcPaint, GetSysColor(COLOR_INFOBK));
  dc.SetBkMode(TRANSPARENT);
  dc.SetTextColor(MouseOver ? GetSysColor(COLOR_INFOTEXT)^0xFF0000 : GetSysColor(COLOR_INFOTEXT));
  CString S;
  GetWindowText(S);
  dc.DrawText(S, &CRect(8, 70, 140, 100), DT_WORDBREAK|DT_CENTER);
  dc.SelectObject(OldFont);
}

void CMsgWnd::Cancel() {
  KillTimer(IDT_WINDOW_TIMER_1);
  KillTimer(IDT_WINDOW_TIMER_2);
  KillTimer(IDT_WINDOW_TIMER_3);
  ShowWindow(SW_HIDE);
}

void CMsgWnd::OnLButtonDown(UINT nFlags, CPoint point) {
  if(MouseOver) LButtonDown=true;
  else CWnd::OnLButtonDown(nFlags, point);
}

void CMsgWnd::OnMouseMove(UINT nFlags, CPoint point) {
  if(!MouseOver) {
    MouseOver=true;
    SetCapture();
  }else{
    CPoint Point(point);
    ClientToScreen(&Point);
    if(!Rect.PtInRect(Point)) {
      MouseOver=false;
      ReleaseCapture();
    }else{
      CWnd::OnMouseMove(nFlags, point);
      return;
  } }
  Cursor=::SetCursor(Cursor);
  RedrawWindow(NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
  CWnd::OnMouseMove(nFlags, point);
}

void CMsgWnd::OnLButtonUp(UINT nFlags, CPoint point) {
  if(MouseOver && LButtonDown) {
    NMHDR nm;
    nm.code     =NM_CLICK;
    nm.idFrom   =GetDlgCtrlID();
    nm.hwndFrom =m_hWnd;
    CWnd* pOwner=GetOwner();
    Cancel();
    if(pOwner && IsWindow(pOwner->m_hWnd)) pOwner->SendMessage(WM_NOTIFY, nm.idFrom, (LPARAM)&nm);
  }else CWnd::OnLButtonUp(nFlags, point);
  LButtonDown=false;
}