src/mac/carbon/overlay.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/overlay.cpp
   3 // Purpose:     common wxOverlay code
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-10-20
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/overlay.h"
  28 #include "wx/private/overlay.h"
  29
  30 #if wxHAS_NATIVE_OVERLAY
  31
  32 // ============================================================================
  33 // implementation
  34 // ============================================================================
  35
  36 wxOverlayImpl::wxOverlayImpl()
  37 {
  38     m_window = NULL ;
  39     m_overlayContext = NULL ;
  40     m_overlayWindow = NULL ;
  41 }
  42
  43 wxOverlayImpl::~wxOverlayImpl()
  44 {
  45     Reset();
  46 }
  47
  48 bool wxOverlayImpl::IsOk()
  49 {
  50     return m_overlayWindow != NULL ;
  51 }
  52
  53 void wxOverlayImpl::MacGetBounds( Rect *bounds )
  54 {
  55     wxPoint origin(0,0);
  56     origin = m_window->ClientToScreen( origin );
  57     bounds->top = origin.y;
  58     bounds->left = origin.x;
  59     bounds->bottom = origin.y+m_y+m_height;
  60     bounds->right = origin.x+m_x+m_width;
  61 }
  62
  63 OSStatus wxOverlayImpl::CreateOverlayWindow()
  64 {
  65     OSStatus err;
  66
  67     WindowAttributes overlayAttributes  = kWindowIgnoreClicksAttribute;
  68
  69         if ( m_window )
  70         {
  71                 m_overlayParentWindow =(WindowRef) m_window->MacGetTopLevelWindowRef();
  72
  73                 Rect bounds ;
  74                 MacGetBounds(&bounds);
  75                 err  = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow );
  76                 if ( err == noErr )
  77                 {
  78         SetWindowGroup( m_overlayWindow, GetWindowGroup(m_overlayParentWindow));    //  Put them in the same group so that their window layers are consistent
  79                 }
  80         }
  81         else
  82         {
  83                 m_overlayParentWindow = NULL ;
  84                 CGRect cgbounds ;
  85                 cgbounds = CGDisplayBounds(CGMainDisplayID());
  86                 Rect bounds;
  87                 bounds.top = cgbounds.origin.y;
  88                 bounds.left = cgbounds.origin.x;
  89                 bounds.bottom = bounds.top + cgbounds.size.height;
  90                 bounds.right = bounds.left  + cgbounds.size.width;
  91                 err  = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow );
  92         }
  93         ShowWindow(m_overlayWindow);
  94         return err;
  95 }
  96
  97 void wxOverlayImpl::Init( wxWindowDC* dc, int x , int y , int width , int height )
  98 {
  99     wxASSERT_MSG( !IsOk() , _("You cannot Init an overlay twice") );
 100
 101     m_window = dc->GetWindow();
 102     m_x = x ;
 103     m_y = y ;
 104     m_width = width ;
 105     m_height = height ;
 106
 107     OSStatus err = CreateOverlayWindow();
 108     wxASSERT_MSG(  err == noErr , _("Couldn't create the overlay window") );
 109 #ifndef __LP64__
 110     err = QDBeginCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext);
 111 #endif
 112     CGContextTranslateCTM( m_overlayContext, 0, m_height+m_y );
 113     CGContextScaleCTM( m_overlayContext, 1, -1 );
 114     wxASSERT_MSG(  err == noErr , _("Couldn't init the context on the overlay window") );
 115 }
 116
 117 void wxOverlayImpl::BeginDrawing( wxWindowDC* dc)
 118 {
 119 // TODO CS
 120         dc->SetGraphicsContext( wxGraphicsContext::CreateFromNative( m_overlayContext ) );
 121 /*
 122     delete dc->m_graphicContext ;
 123     dc->m_graphicContext = new wxMacCGContext( m_overlayContext );
 124     // we are right now startin at 0,0 not at the wxWindow's origin, so most of the calculations
 125     // int dc are already corect
 126     // just to make sure :
 127     dc->m_macLocalOrigin.x = 0 ;
 128     dc->m_macLocalOrigin.y = 0 ;
 129         */
 130     wxSize size = dc->GetSize() ;
 131     dc->SetClippingRegion( 0 , 0 , size.x , size.y ) ;
 132 }
 133
 134 void wxOverlayImpl::EndDrawing( wxWindowDC* dc)
 135 {
 136         dc->SetGraphicsContext(NULL);
 137 }
 138
 139 void wxOverlayImpl::Clear(wxWindowDC* dc)
 140 {
 141     wxASSERT_MSG( IsOk() , _("You cannot Clear an overlay that is not inited") );
 142     CGRect box  = CGRectMake( m_x - 1, m_y - 1 , m_width + 2 , m_height + 2 );
 143     CGContextClearRect( m_overlayContext, box );
 144 }
 145
 146 void wxOverlayImpl::Reset()
 147 {
 148     if ( m_overlayContext )
 149     {
 150 #ifndef __LP64__
 151         OSStatus err = QDEndCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext);
 152         wxASSERT_MSG(  err == noErr , _("Couldn't end the context on the overlay window") );
 153 #endif
 154         m_overlayContext = NULL ;
 155     }
 156
 157     // todo : don't dispose, only hide and reposition on next run
 158     if (m_overlayWindow)
 159     {
 160         DisposeWindow(m_overlayWindow);
 161         m_overlayWindow = NULL ;
 162     }
 163 }
 164
 165 #endif // wxHAS_NATIVE_OVERLAY