avoid setting initial position if it was not specified, broken in r70734
[wxWidgets.git] / src / osx / carbon / overlay.cpp
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489468fe 1/////////////////////////////////////////////////////////////////////////////
524c47aa 2// Name: src/osx/carbon/overlay.cpp
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3// Purpose: common wxOverlay code
4// Author: Stefan Csomor
5// Modified by:
6// Created: 2006-10-20
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7// Copyright: (c) wxWidgets team
8// Licence: wxWindows licence
9/////////////////////////////////////////////////////////////////////////////
10
11// ============================================================================
12// declarations
13// ============================================================================
14
15// ----------------------------------------------------------------------------
16// headers
17// ----------------------------------------------------------------------------
18
19// For compilers that support precompilation, includes "wx.h".
20#include "wx/wxprec.h"
21
22#ifdef __BORLANDC__
23 #pragma hdrstop
24#endif
25
26#include "wx/overlay.h"
27
28#ifndef WX_PRECOMP
29 #include "wx/dcclient.h"
30#endif
31
32#include "wx/private/overlay.h"
33
34#ifdef wxHAS_NATIVE_OVERLAY
35
36// ============================================================================
37// implementation
38// ============================================================================
39
40wxOverlayImpl::wxOverlayImpl()
41{
42 m_window = NULL ;
43 m_overlayContext = NULL ;
44 m_overlayWindow = NULL ;
45}
46
47wxOverlayImpl::~wxOverlayImpl()
48{
49 Reset();
50}
51
52bool wxOverlayImpl::IsOk()
53{
54 return m_overlayWindow != NULL ;
55}
56
57void wxOverlayImpl::MacGetBounds( Rect *bounds )
58{
59 int x, y;
60 x=y=0;
61 m_window->MacWindowToRootWindow( &x , &y ) ;
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62 wxNonOwnedWindow* tlw = m_window->MacGetTopLevelWindow();
63 tlw->GetNonOwnedPeer()->WindowToScreen( &x, &y );
489468fe 64
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65 bounds->top = y+m_y;
66 bounds->left = x+m_x;
67 bounds->bottom = y+m_y+m_height;
68 bounds->right = x+m_x+m_width;
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69}
70
71OSStatus wxOverlayImpl::CreateOverlayWindow()
72{
73 OSStatus err;
74
75 WindowAttributes overlayAttributes = kWindowIgnoreClicksAttribute;
76
77 if ( m_window )
78 {
79 m_overlayParentWindow =(WindowRef) m_window->MacGetTopLevelWindowRef();
80
81 Rect bounds ;
82 MacGetBounds(&bounds);
83 err = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow );
84 if ( err == noErr )
85 {
86 SetWindowGroup( m_overlayWindow, GetWindowGroup(m_overlayParentWindow)); // Put them in the same group so that their window layers are consistent
87 }
88 }
89 else
90 {
91 m_overlayParentWindow = NULL ;
92 CGRect cgbounds ;
93 cgbounds = CGDisplayBounds(CGMainDisplayID());
94 Rect bounds;
95 bounds.top = (short)cgbounds.origin.y;
96 bounds.left = (short)cgbounds.origin.x;
97 bounds.bottom = (short)(bounds.top + cgbounds.size.height);
98 bounds.right = (short)(bounds.left + cgbounds.size.width);
99 err = CreateNewWindow( kOverlayWindowClass, overlayAttributes, &bounds, &m_overlayWindow );
100 }
101 ShowWindow(m_overlayWindow);
102 return err;
103}
104
105void wxOverlayImpl::Init( wxDC* dc, int x , int y , int width , int height )
106{
107 wxASSERT_MSG( !IsOk() , _("You cannot Init an overlay twice") );
108
109 m_window = dc->GetWindow();
110 m_x = x ;
111 m_y = y ;
112 if ( dc->IsKindOf( CLASSINFO( wxClientDC ) ))
113 {
114 wxPoint origin = m_window->GetClientAreaOrigin();
115 m_x += origin.x;
116 m_y += origin.y;
117 }
118 m_width = width ;
119 m_height = height ;
120
121 OSStatus err = CreateOverlayWindow();
122 wxASSERT_MSG( err == noErr , _("Couldn't create the overlay window") );
123#ifndef __LP64__
124 err = QDBeginCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext);
125#endif
126 CGContextTranslateCTM( m_overlayContext, 0, m_height );
127 CGContextScaleCTM( m_overlayContext, 1, -1 );
128 CGContextTranslateCTM( m_overlayContext, -m_x , -m_y );
129 wxASSERT_MSG( err == noErr , _("Couldn't init the context on the overlay window") );
130}
131
132void wxOverlayImpl::BeginDrawing( wxDC* dc)
133{
134 wxDCImpl *impl = dc->GetImpl();
135 wxGCDCImpl *win_impl = wxDynamicCast(impl,wxGCDCImpl);
136 if (win_impl)
137 {
138 win_impl->SetGraphicsContext( wxGraphicsContext::CreateFromNative( m_overlayContext ) );
139 dc->SetClippingRegion( m_x , m_y , m_width , m_height ) ;
140 }
141}
142
143void wxOverlayImpl::EndDrawing( wxDC* dc)
144{
145 wxDCImpl *impl = dc->GetImpl();
146 wxGCDCImpl *win_impl = wxDynamicCast(impl,wxGCDCImpl);
147 if (win_impl)
148 win_impl->SetGraphicsContext(NULL);
149
150 CGContextFlush( m_overlayContext );
151}
152
153void wxOverlayImpl::Clear(wxDC* WXUNUSED(dc))
154{
155 wxASSERT_MSG( IsOk() , _("You cannot Clear an overlay that is not inited") );
156 CGRect box = CGRectMake( m_x - 1, m_y - 1 , m_width + 2 , m_height + 2 );
157 CGContextClearRect( m_overlayContext, box );
158}
159
160void wxOverlayImpl::Reset()
161{
162 if ( m_overlayContext )
163 {
164#ifndef __LP64__
165 OSStatus err = QDEndCGContext(GetWindowPort(m_overlayWindow), &m_overlayContext);
166 if ( err != noErr )
167 {
168 wxFAIL_MSG("Couldn't end the context on the overlay window");
169 }
170#endif
171 m_overlayContext = NULL ;
172 }
173
174 // todo : don't dispose, only hide and reposition on next run
175 if (m_overlayWindow)
176 {
177 DisposeWindow(m_overlayWindow);
178 m_overlayWindow = NULL ;
179 }
180}
181
182#endif // wxHAS_NATIVE_OVERLAY