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[wxWidgets.git] / src / mac / tooltip.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        tooltip.cpp
// Purpose:     wxToolTip implementation
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
    #pragma implementation "tooltip.h"
#endif

#include "wx/setup.h"

#if wxUSE_TOOLTIPS

#include "wx/app.h"
#include "wx/dc.h"
#include "wx/window.h"
#include "wx/tooltip.h"
#include "wx/timer.h"
#include "wx/geometry.h"
#include "wx/mac/aga.h"
#include "wx/mac/uma.h"

//-----------------------------------------------------------------------------
// global data
//-----------------------------------------------------------------------------

class wxMacToolTip
{
	public :
		wxMacToolTip( ) ;
		~wxMacToolTip() ;
		
		void			Setup( WindowRef window  , wxString text , wxPoint localPosition ) ;
		long			GetMark() { return m_mark ; }
		void 			Draw() ;
		void			Clear() ;
		bool			IsShown() { return m_shown  ; }
	private :
		
		wxString	m_label ;
		wxPoint m_position ;
		Rect			m_rect ;
		WindowRef	m_window ;	
		PicHandle	m_backpict ;
		bool		m_shown ;
		long		m_mark ;
} ;

class wxMacToolTipTimer : wxTimer
{
public:
	wxMacToolTipTimer(wxMacToolTip* tip, int iMilliseconds) ;

	void Notify()
	{
		if ( m_mark == m_tip->GetMark() )
			m_tip->Draw() ;

		delete this;
	}
	
protected:
	wxMacToolTip* 	m_tip;
	long			m_mark ;
};

//-----------------------------------------------------------------------------
// wxToolTip
//-----------------------------------------------------------------------------
static long s_ToolTipDelay = 500 ;
static bool s_ShowToolTips = true ;
static wxMacToolTip s_ToolTip ;
static wxWindow* s_LastWindowEntered = NULL ;
static wxRect2DInt s_ToolTipArea ;
static WindowRef s_ToolTipWindowRef = NULL ;
wxToolTip::wxToolTip( const wxString &tip )
{
    m_text = tip;
    m_window = (wxWindow*) NULL;
}

wxToolTip::~wxToolTip()
{
}

void wxToolTip::SetTip( const wxString &tip )
{
     m_text = tip;

    if ( m_window )
    {
    	/*
        // update it immediately
        wxToolInfo ti(GetHwndOf(m_window));
        ti.lpszText = (wxChar *)m_text.c_str();

        (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti);
        */
    }
}

void wxToolTip::SetWindow( wxWindow *win )
{
    m_window = win;
}

void wxToolTip::Enable( bool flag )
{
	if ( s_ShowToolTips != flag )
	{
		s_ShowToolTips = flag ;
		if ( s_ShowToolTips )
		{
		}
		else
		{
			s_ToolTip.Clear() ;
		}
	}
}

void wxToolTip::SetDelay( long msecs )
{
	s_ToolTipDelay = msecs ;
}

void wxToolTip::RelayEvent( wxWindow *win , wxMouseEvent &event )
{
	if ( s_ShowToolTips )
	{
		if ( event.GetEventType() == wxEVT_LEAVE_WINDOW )
		{
			s_ToolTip.Clear() ;
		}
		else if (event.GetEventType() == wxEVT_ENTER_WINDOW || event.GetEventType() == wxEVT_MOTION )
		{
			wxPoint2DInt where( event.m_x , event.m_y ) ;
			if ( s_LastWindowEntered == win && s_ToolTipArea.Contains( where ) )
			{
			}
			else
			{
				s_ToolTip.Clear() ;
				s_ToolTipArea = wxRect2DInt( event.m_x - 2 , event.m_y - 2 , 4 , 4 ) ;
				s_LastWindowEntered = win ;
				
				WindowRef window = win->MacGetRootWindow() ;
				int x = event.m_x ;
				int y = event.m_y ;
				wxPoint local( x , y ) ;
				win->MacClientToRootWindow( &x, &y ) ;
				wxPoint windowlocal( x , y ) ;
				s_ToolTip.Setup( window , win->MacGetToolTipString( local ) , windowlocal ) ;
			}
		}
	}
}

void wxToolTip::RemoveToolTips()
{
	s_ToolTip.Clear() ;
}
// --- mac specific

wxMacToolTipTimer::wxMacToolTipTimer( wxMacToolTip *tip , int msec )
{
	m_tip = tip;
	m_mark = tip->GetMark() ;
	Start(msec, true);
}

wxMacToolTip::wxMacToolTip()
{
	m_window = NULL ;
	m_backpict = NULL ;
	m_mark = 0 ;
	m_shown = false ;
}

void wxMacToolTip::Setup( WindowRef window  , wxString text , wxPoint localPosition ) 
{
	m_mark++ ;
	Clear() ;
	m_position = localPosition ; 
	m_label = wxMacMakeMacStringFromPC( text ) ;
	m_window = window ;
	s_ToolTipWindowRef = window ;
	m_backpict = NULL ;
	new wxMacToolTipTimer( this , s_ToolTipDelay ) ;
}

wxMacToolTip::~wxMacToolTip() 
{
	if ( m_backpict ) 
		Clear() ;
}

const short kTipBorder = 2 ;
const short kTipOffset = 5 ;

void wxMacToolTip::Draw()
{
	if ( m_label.Length() == 0 )
		return ;
		
	if ( m_window == s_ToolTipWindowRef )
	{
#if TARGET_CARBON
/*
	  if ( HMDisplayTag != (void*) kUnresolvedCFragSymbolAddress )
	  {
	    HMDisplayTag( 
	  }
	  else
*/
#endif
	  {
  		#if TARGET_CARBON
  		AGAPortHelper help( GetWindowPort( m_window ) );
  		#else
  		AGAPortHelper help( ( m_window ) );
  		#endif
  		m_shown = true ;

  		TextFont( kFontIDGeneva ) ;
  		TextSize( 10 ) ;
  		TextFace( 0 ) ;
  		FontInfo fontInfo;
  		::GetFontInfo(&fontInfo);
  		short lineh = fontInfo.ascent + fontInfo.descent + fontInfo.leading;
  		short height = 0 ;
  	//	short width = TextWidth( m_label , 0 ,m_label.Length() ) ;
  		
  		int i = 0 ;
  		int length = m_label.Length() ;
  		int width = 0 ;
  		int thiswidth = 0 ;
  		int laststop = 0 ;
  		const char *text = m_label ;
  		while( i < length )
  		{
  			if( text[i] == 13 || text[i] == 10)
  			{
  				thiswidth = ::TextWidth( text , laststop , i - laststop ) ;
  				if ( thiswidth > width )
  					width = thiswidth ;
  					
  				height += lineh ;
  				laststop = i+1 ;
  			}
  			i++ ;
  		}
  		if ( i - laststop > 0 )
  		{
  			thiswidth = ::TextWidth( text , laststop , i - laststop ) ;
  			if ( thiswidth > width )
  				width = thiswidth ;
  			height += lineh ;
  		}


  		m_rect.left = m_position.x + kTipOffset;
  		m_rect.top = m_position.y + kTipOffset;
  		m_rect.right = m_rect.left + width + 2 * kTipBorder;
  		m_rect.bottom = m_rect.top + height + 2 * kTipBorder;
  		ClipRect( &m_rect ) ;
  		BackColor( whiteColor ) ;
  		ForeColor(blackColor ) ;
  		m_backpict = OpenPicture(&m_rect);

  		CopyBits(GetPortBitMapForCopyBits(GetWindowPort(m_window)), 
  				   GetPortBitMapForCopyBits(GetWindowPort(m_window)), 
  				   &m_rect, 
  				   &m_rect, 
  				   srcCopy, 
  				   NULL);

  		ClosePicture();
      PenNormal() ;
  		SetThemeBackground(kThemeBrushNotificationWindowBackground,32,true) ;
  		SetThemeTextColor(kThemeTextColorNotification,32,true) ;
  		EraseRect( &m_rect ) ;
  		FrameRect( &m_rect ) ;
  		::MoveTo( m_rect.left + kTipBorder , m_rect.top + fontInfo.ascent + kTipBorder);

  		i = 0 ;
  		laststop = 0 ;
  		height = 0 ;
  		while( i < length )
  		{
  			if( text[i] == 13 || text[i] == 10)
  			{
  				::DrawText( text , laststop , i - laststop ) ;
  				height += lineh ;
  				::MoveTo( m_rect.left + kTipBorder , m_rect.top + fontInfo.ascent + kTipBorder + height );
  				laststop = i+1 ;
  			}
  			i++ ;
  		}
  					
  		::DrawText( text , laststop , i - laststop ) ;
  		::TextMode( srcOr ) ;		
  	//	DrawText( m_label , 0 , m_label.Length() ) ;
  	}
	}
}

void wxToolTip::NotifyWindowDelete( WindowRef win ) 
{
	if ( win == s_ToolTipWindowRef )
	{
		s_ToolTipWindowRef = NULL ;
	}
}

void wxMacToolTip::Clear()
{
	m_mark++ ;
	if ( !m_shown )
		return ;
		 
	if ( m_window == s_ToolTipWindowRef && m_backpict )
	{
		#if TARGET_CARBON
		AGAPortHelper help( GetWindowPort(m_window) ) ;
		#else
		AGAPortHelper help( (m_window) ) ;
		#endif
		m_shown = false ;

		BackColor( whiteColor ) ;
		ForeColor(blackColor ) ;
		DrawPicture(m_backpict, &m_rect);
		KillPicture(m_backpict);
		m_backpict = NULL ;
	}
}

#endif