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
  29 #ifndef WX_PRECOMP
  30     #include "wx/dcclient.h"
  31 #endif
  32
  33 #include "wx/private/overlay.h"
  34
  35 #ifdef wxHAS_NATIVE_OVERLAY
  36
  37 // ============================================================================
  38 // implementation
  39 // ============================================================================
  40
  41 wxOverlayImpl::wxOverlayImpl()
  42 {
  43     m_window = NULL ;
  44     m_overlayContext = NULL ;
  45     m_overlayWindow = NULL ;
  46 }
  47
  48 wxOverlayImpl::~wxOverlayImpl()
  49 {
  50     Reset();
  51 }
  52
  53 bool wxOverlayImpl::IsOk()
  54 {
  55     return m_overlayWindow != NULL ;
  56 }
  57
  58 void wxOverlayImpl::MacGetBounds( Rect *bounds )
  59 {
  60     wxPoint origin(0,0);
  61     origin = m_window->ClientToScreen( origin );
  62     bounds->top = origin.y;
  63     bounds->left = origin.x;
  64     bounds->bottom = origin.y+m_y+m_height;
  65     bounds->right = origin.x+m_x+m_width;
  66 }
  67
  68 OSStatus wxOverlayImpl::CreateOverlayWindow()
  69 {
  70     OSStatus err;
  71
  72     WindowAttributes overlayAttributes  = kWindowIgnoreClicksAttribute;
  73
  74     if ( m_window )
  75     {
  76         m_overlayParentWindow =(WindowRef) m_window->MacGetTopLevelWindowRef();
  77
  78         Rect bounds ;
  79         MacGetBounds(&bounds);
  80         err  = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow );
  81         if ( err == noErr )
  82         {
  83             SetWindowGroup( m_overlayWindow, GetWindowGroup(m_overlayParentWindow));    //  Put them in the same group so that their window layers are consistent
  84         }
  85     }
  86     else
  87     {
  88         m_overlayParentWindow = NULL ;
  89         CGRect cgbounds ;
  90         cgbounds = CGDisplayBounds(CGMainDisplayID());
  91         Rect bounds;
  92         bounds.top = cgbounds.origin.y;
  93         bounds.left = cgbounds.origin.x;
  94         bounds.bottom = bounds.top + cgbounds.size.height;
  95         bounds.right = bounds.left  + cgbounds.size.width;
  96         err  = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow );
  97     }
  98     ShowWindow(m_overlayWindow);
  99     return err;
 100 }
 101
 102 void wxOverlayImpl::Init( wxWindowDC* dc, int x , int y , int width , int height )
 103 {
 104     wxASSERT_MSG( !IsOk() , _("You cannot Init an overlay twice") );
 105
 106     m_window = dc->GetWindow();
 107     m_x = x ;
 108     m_y = y ;
 109     m_width = width ;
 110     m_height = height ;
 111
 112     OSStatus err = CreateOverlayWindow();
 113     wxASSERT_MSG(  err == noErr , _("Couldn't create the overlay window") );
 114 #ifndef __LP64__
 115     err = QDBeginCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext);
 116 #endif
 117     CGContextTranslateCTM( m_overlayContext, 0, m_height+m_y );
 118     CGContextScaleCTM( m_overlayContext, 1, -1 );
 119     wxASSERT_MSG(  err == noErr , _("Couldn't init the context on the overlay window") );
 120 }
 121
 122 void wxOverlayImpl::BeginDrawing( wxWindowDC* dc)
 123 {
 124 // TODO CS
 125     dc->SetGraphicsContext( wxGraphicsContext::CreateFromNative( m_overlayContext ) );
 126 /*
 127     delete dc->m_graphicContext ;
 128     dc->m_graphicContext = new wxMacCGContext( m_overlayContext );
 129     // we are right now startin at 0,0 not at the wxWindow's origin, so most of the calculations
 130     // int dc are already corect
 131     // just to make sure :
 132     dc->m_macLocalOrigin.x = 0 ;
 133     dc->m_macLocalOrigin.y = 0 ;
 134 */
 135     wxSize size = dc->GetSize() ;
 136     dc->SetClippingRegion( 0 , 0 , size.x , size.y ) ;
 137 }
 138
 139 void wxOverlayImpl::EndDrawing( wxWindowDC* dc)
 140 {
 141     dc->SetGraphicsContext(NULL);
 142 }
 143
 144 void wxOverlayImpl::Clear(wxWindowDC* dc)
 145 {
 146     wxASSERT_MSG( IsOk() , _("You cannot Clear an overlay that is not inited") );
 147     CGRect box  = CGRectMake( m_x - 1, m_y - 1 , m_width + 2 , m_height + 2 );
 148     CGContextClearRect( m_overlayContext, box );
 149 }
 150
 151 void wxOverlayImpl::Reset()
 152 {
 153     if ( m_overlayContext )
 154     {
 155 #ifndef __LP64__
 156         OSStatus err = QDEndCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext);
 157         wxASSERT_MSG(  err == noErr , _("Couldn't end the context on the overlay window") );
 158 #endif
 159         m_overlayContext = NULL ;
 160     }
 161
 162     // todo : don't dispose, only hide and reposition on next run
 163     if (m_overlayWindow)
 164     {
 165         DisposeWindow(m_overlayWindow);
 166         m_overlayWindow = NULL ;
 167     }
 168 }
 169
 170 #endif // wxHAS_NATIVE_OVERLAY