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