src/mac/tooltip.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        tooltip.cpp
   3 // Purpose:     wxToolTip implementation
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11     #pragma implementation "tooltip.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_TOOLTIPS
  17
  18 #include "wx/app.h"
  19 #include "wx/dc.h"
  20 #include "wx/window.h"
  21 #include "wx/tooltip.h"
  22 #include "wx/timer.h"
  23 #include "wx/geometry.h"
  24 #include "wx/mac/uma.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // global data
  28 //-----------------------------------------------------------------------------
  29
  30 class wxMacToolTipTimer ;
  31
  32 class wxMacToolTip
  33 {
  34     public :
  35         wxMacToolTip( ) ;
  36         ~wxMacToolTip() ;
  37
  38         void            Setup( WindowRef window  , const wxString& text , wxPoint localPosition ) ;
  39         long            GetMark() { return m_mark ; }
  40         void             Draw() ;
  41         void            Clear() ;
  42         bool            IsShown() { return m_shown  ; }
  43     private :
  44
  45         wxString    m_label ;
  46         wxPoint m_position ;
  47         Rect            m_rect ;
  48         WindowRef    m_window ;
  49         PicHandle    m_backpict ;
  50         bool        m_shown ;
  51         long        m_mark ;
  52         wxMacToolTipTimer* m_timer ;
  53 #if TARGET_CARBON
  54         wxMacCFStringHolder m_helpTextRef ;
  55 #endif
  56 } ;
  57
  58 class wxMacToolTipTimer : public wxTimer
  59 {
  60 public:
  61     wxMacToolTipTimer() {} ;
  62     wxMacToolTipTimer(wxMacToolTip* tip, int iMilliseconds) ;
  63     virtual ~wxMacToolTipTimer() {} ;
  64     void Notify()
  65     {
  66         if ( m_mark == m_tip->GetMark() )
  67             m_tip->Draw() ;
  68     }
  69 protected:
  70     wxMacToolTip*     m_tip;
  71     long        m_mark ;
  72 };
  73
  74 //-----------------------------------------------------------------------------
  75 // wxToolTip
  76 //-----------------------------------------------------------------------------
  77 static long s_ToolTipDelay = 500 ;
  78 static bool s_ShowToolTips = true ;
  79 static wxMacToolTip s_ToolTip ;
  80 static wxWindow* s_LastWindowEntered = NULL ;
  81 static wxRect2DInt s_ToolTipArea ;
  82 static WindowRef s_ToolTipWindowRef = NULL ;
  83
  84 IMPLEMENT_ABSTRACT_CLASS(wxToolTip, wxObject)
  85
  86 wxToolTip::wxToolTip( const wxString &tip )
  87 {
  88     m_text = tip;
  89     m_window = (wxWindow*) NULL;
  90 }
  91
  92 wxToolTip::~wxToolTip()
  93 {
  94 }
  95
  96 void wxToolTip::SetTip( const wxString &tip )
  97 {
  98     m_text = tip;
  99
 100     if ( m_window )
 101     {
 102     /*
 103     // update it immediately
 104     wxToolInfo ti(GetHwndOf(m_window));
 105     ti.lpszText = (wxChar *)m_text.c_str();
 106
 107       (void)SendTooltipMessage(GetToolTipCtrl(), TTM_UPDATETIPTEXT, 0, &ti);
 108         */
 109     }
 110 }
 111
 112 void wxToolTip::SetWindow( wxWindow *win )
 113 {
 114     m_window = win ;
 115 }
 116
 117 void wxToolTip::Enable( bool flag )
 118 {
 119     if ( s_ShowToolTips != flag )
 120     {
 121         s_ShowToolTips = flag ;
 122         if ( s_ShowToolTips )
 123         {
 124         }
 125         else
 126         {
 127             s_ToolTip.Clear() ;
 128         }
 129     }
 130 }
 131
 132 void wxToolTip::SetDelay( long msecs )
 133 {
 134     s_ToolTipDelay = msecs ;
 135 }
 136
 137 void wxToolTip::RelayEvent( wxWindow *win , wxMouseEvent &event )
 138 {
 139     if ( s_ShowToolTips )
 140     {
 141         if ( event.GetEventType() == wxEVT_LEAVE_WINDOW )
 142         {
 143             s_ToolTip.Clear() ;
 144         }
 145         else if (event.GetEventType() == wxEVT_ENTER_WINDOW || event.GetEventType() == wxEVT_MOTION )
 146         {
 147             wxPoint2DInt where( event.m_x , event.m_y ) ;
 148             if ( s_LastWindowEntered == win && s_ToolTipArea.Contains( where ) )
 149             {
 150             }
 151             else
 152             {
 153                 s_ToolTip.Clear() ;
 154                 s_ToolTipArea = wxRect2DInt( event.m_x - 2 , event.m_y - 2 , 4 , 4 ) ;
 155                 s_LastWindowEntered = win ;
 156
 157                 WindowRef window = MAC_WXHWND( win->MacGetRootWindow() ) ;
 158                 int x = event.m_x ;
 159                 int y = event.m_y ;
 160                 wxPoint local( x , y ) ;
 161                 win->MacClientToRootWindow( &x, &y ) ;
 162                 wxPoint windowlocal( x , y ) ;
 163                 s_ToolTip.Setup( window , win->MacGetToolTipString( local ) , windowlocal ) ;
 164             }
 165         }
 166     }
 167 }
 168
 169 void wxToolTip::RemoveToolTips()
 170 {
 171     s_ToolTip.Clear() ;
 172 }
 173 // --- mac specific
 174
 175 wxMacToolTipTimer::wxMacToolTipTimer( wxMacToolTip *tip , int msec )
 176 {
 177     m_tip = tip;
 178     m_mark = tip->GetMark() ;
 179     Start(msec, true);
 180 }
 181
 182 wxMacToolTip::wxMacToolTip()
 183 {
 184     m_window = NULL ;
 185     m_backpict = NULL ;
 186     m_mark = 0 ;
 187     m_shown = false ;
 188     m_timer = NULL ;
 189 }
 190
 191 void wxMacToolTip::Setup( WindowRef win  , const wxString& text , wxPoint localPosition )
 192 {
 193     m_mark++ ;
 194     Clear() ;
 195     m_position = localPosition ;
 196     m_label = text ;
 197     m_window =win;
 198     s_ToolTipWindowRef = m_window ;
 199     m_backpict = NULL ;
 200     if ( m_timer )
 201         delete m_timer ;
 202     m_timer = new wxMacToolTipTimer( this , s_ToolTipDelay ) ;
 203 }
 204
 205 wxMacToolTip::~wxMacToolTip()
 206 {
 207     if ( m_timer ) {
 208         delete m_timer ;
 209         m_timer = NULL;
 210     }
 211     if ( m_backpict )
 212         Clear() ;
 213 }
 214
 215 const short kTipBorder = 2 ;
 216 const short kTipOffset = 5 ;
 217
 218 void wxMacToolTip::Draw()
 219 {
 220     if ( m_label.Length() == 0 )
 221         return ;
 222
 223     if ( m_window == s_ToolTipWindowRef )
 224     {
 225         m_shown = true ;
 226 #if TARGET_CARBON
 227         HMHelpContentRec tag ;
 228         tag.version = kMacHelpVersion;
 229         SetRect( &tag.absHotRect , m_position.x - 2 , m_position.y - 2 , m_position.x + 2 , m_position.y + 2 ) ;
 230         GrafPtr port ;
 231         GetPort( &port ) ;
 232         SetPortWindowPort(m_window) ;
 233         LocalToGlobal( (Point *) &tag.absHotRect.top );
 234         LocalToGlobal( (Point *) &tag.absHotRect.bottom );
 235         SetPort( port );
 236         m_helpTextRef = m_label ;
 237         tag.content[kHMMinimumContentIndex].contentType = kHMCFStringContent ;
 238         tag.content[kHMMinimumContentIndex].u.tagCFString = m_helpTextRef ;
 239         tag.content[kHMMaximumContentIndex].contentType = kHMCFStringContent ;
 240         tag.content[kHMMaximumContentIndex].u.tagCFString = m_helpTextRef ;
 241         tag.tagSide = kHMDefaultSide;
 242         HMDisplayTag( &tag );
 243 #else
 244         wxMacPortStateHelper help( (GrafPtr) GetWindowPort( m_window ) );
 245         FontFamilyID fontId ;
 246         Str255 fontName ;
 247         SInt16 fontSize ;
 248         Style fontStyle ;
 249         GetThemeFont(kThemeSmallSystemFont , GetApplicationScript() , fontName , &fontSize , &fontStyle ) ;
 250         GetFNum( fontName, &fontId );
 251
 252         TextFont( fontId ) ;
 253         TextSize( fontSize ) ;
 254         TextFace( fontStyle ) ;
 255         FontInfo fontInfo;
 256         ::GetFontInfo(&fontInfo);
 257         short lineh = fontInfo.ascent + fontInfo.descent + fontInfo.leading;
 258         short height = 0 ;
 259
 260         int i = 0 ;
 261         int length = m_label.Length() ;
 262         int width = 0 ;
 263         int thiswidth = 0 ;
 264         int laststop = 0 ;
 265         wxCharBuffer text = wxMacStringToCString( m_label ) ;
 266
 267         while( i < length )
 268         {
 269             if( text[i] == 13 || text[i] == 10)
 270             {
 271                 thiswidth = ::TextWidth( text , laststop , i - laststop ) ;
 272                 if ( thiswidth > width )
 273                     width = thiswidth ;
 274
 275                 height += lineh ;
 276                 laststop = i+1 ;
 277             }
 278             i++ ;
 279         }
 280         if ( i - laststop > 0 )
 281         {
 282             thiswidth = ::TextWidth( text , laststop , i - laststop ) ;
 283             if ( thiswidth > width )
 284                 width = thiswidth ;
 285             height += lineh ;
 286         }
 287
 288         m_rect.left = m_position.x + kTipOffset;
 289         m_rect.top = m_position.y + kTipOffset;
 290         m_rect.right = m_rect.left + width + 2 * kTipBorder;
 291
 292         m_rect.bottom = m_rect.top + height + 2 * kTipBorder;
 293         Rect r ;
 294         GetPortBounds( GetWindowPort( m_window ) , &r ) ;
 295         if ( m_rect.top < 0 )
 296         {
 297             m_rect.bottom += -m_rect.top ;
 298             m_rect.top = 0 ;
 299         }
 300         if ( m_rect.left < 0 )
 301         {
 302             m_rect.right += -m_rect.left ;
 303             m_rect.left = 0 ;
 304         }
 305         if ( m_rect.right > r.right )
 306         {
 307             m_rect.left -= (m_rect.right - r.right ) ;
 308             m_rect.right = r.right ;
 309         }
 310         if ( m_rect.bottom > r.bottom )
 311         {
 312             m_rect.top -= (m_rect.bottom - r.bottom) ;
 313             m_rect.bottom = r.bottom ;
 314         }
 315         ClipRect( &m_rect ) ;
 316         BackColor( whiteColor ) ;
 317         ForeColor(blackColor ) ;
 318         GWorldPtr port ;
 319         NewGWorld( &port , wxDisplayDepth() , &m_rect , NULL , NULL , 0 ) ;
 320         CGrafPtr    origPort ;
 321         GDHandle    origDevice ;
 322
 323         GetGWorld( &origPort , &origDevice ) ;
 324         SetGWorld( port , NULL ) ;
 325
 326         m_backpict = OpenPicture(&m_rect);
 327
 328         CopyBits(GetPortBitMapForCopyBits(GetWindowPort(m_window)),
 329             GetPortBitMapForCopyBits(port),
 330             &m_rect,
 331             &m_rect,
 332             srcCopy,
 333             NULL);
 334         ClosePicture();
 335         SetGWorld( origPort , origDevice ) ;
 336         DisposeGWorld( port ) ;
 337         PenNormal() ;
 338
 339         RGBColor tooltipbackground = { 0xFFFF , 0xFFFF , 0xC000 } ;
 340         BackColor( whiteColor ) ;
 341         RGBForeColor( &tooltipbackground ) ;
 342
 343         PaintRect( &m_rect ) ;
 344         ForeColor(blackColor ) ;
 345         FrameRect( &m_rect ) ;
 346         SetThemeTextColor(kThemeTextColorNotification,wxDisplayDepth(),true) ;
 347         ::MoveTo( m_rect.left + kTipBorder , m_rect.top + fontInfo.ascent + kTipBorder);
 348
 349         i = 0 ;
 350         laststop = 0 ;
 351         height = 0 ;
 352
 353         while( i < length )
 354         {
 355             if( text[i] == 13 || text[i] == 10)
 356             {
 357                 ::DrawText( text , laststop , i - laststop ) ;
 358                 height += lineh ;
 359                 ::MoveTo( m_rect.left + kTipBorder , m_rect.top + fontInfo.ascent + kTipBorder + height );
 360                 laststop = i+1 ;
 361             }
 362             i++ ;
 363         }
 364         ::DrawText( text , laststop , i - laststop ) ;
 365         ::TextMode( srcOr ) ;
 366 #endif
 367     }
 368 }
 369
 370 void wxToolTip::NotifyWindowDelete( WXHWND win )
 371 {
 372     if ( win == s_ToolTipWindowRef )
 373     {
 374         s_ToolTipWindowRef = NULL ;
 375     }
 376 }
 377
 378 void wxMacToolTip::Clear()
 379 {
 380     m_mark++ ;
 381     if ( m_timer )
 382     {
 383         delete m_timer ;
 384         m_timer = NULL ;
 385     }
 386     if ( !m_shown )
 387         return ;
 388 #if TARGET_CARBON
 389     HMHideTag() ;
 390     m_helpTextRef.Release() ;
 391 #else
 392     if ( m_window == s_ToolTipWindowRef && m_backpict )
 393     {
 394         wxMacPortStateHelper help( (GrafPtr) GetWindowPort(m_window) ) ;
 395
 396         m_shown = false ;
 397
 398         BackColor( whiteColor ) ;
 399         ForeColor(blackColor ) ;
 400         DrawPicture(m_backpict, &m_rect);
 401         KillPicture(m_backpict);
 402         m_backpict = NULL ;
 403     }
 404 #endif
 405 }
 406
 407 #endif
 408