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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/mac/carbon/dcclient.cpp
3// Purpose: wxClientDCImpl class
4// Author: Stefan Csomor
5// Modified by:
6// Created: 01/02/97
7// RCS-ID: $Id$
8// Copyright: (c) Stefan Csomor
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12#include "wx/wxprec.h"
13
14#include "wx/dcclient.h"
15
16#ifndef WX_PRECOMP
17 #include "wx/log.h"
18 #include "wx/window.h"
19 #include "wx/dcmemory.h"
20 #include "wx/settings.h"
21 #include "wx/toplevel.h"
22 #include "wx/math.h"
23 #include "wx/region.h"
24#endif
25
26#include "wx/graphics.h"
27#include "wx/rawbmp.h"
28#include "wx/mac/private.h"
29
30//-----------------------------------------------------------------------------
31// wxWindowDCImpl
32//-----------------------------------------------------------------------------
33
34IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxGCDCImpl)
35
36wxWindowDCImpl::wxWindowDCImpl( wxDC *owner )
37 : wxGCDCImpl( owner )
38{
39 m_release = false;
40}
41
42wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window )
43 : wxGCDCImpl( owner )
44{
45 m_window = window;
46
47 WindowRef rootwindow = (WindowRef) window->MacGetTopLevelWindowRef() ;
48 if (!rootwindow)
49 return;
50
51 m_ok = true ;
52
53 m_window->GetSize( &m_width , &m_height);
54 CGContextRef cg = (CGContextRef) window->MacGetCGContextRef();
55 m_release = false;
56 if ( cg == NULL )
57 {
58 SetGraphicsContext( wxGraphicsContext::Create( window ) ) ;
59 }
60 else
61 {
62 CGContextSaveGState( cg );
63 m_release = true ;
64 // make sure the context is having its origin at the wx-window coordinates of the
65 // view (read at the top of window.cpp about the differences)
66 if ( window->MacGetLeftBorderSize() != 0 || window->MacGetTopBorderSize() != 0 )
67 CGContextTranslateCTM( cg , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
68
69 SetGraphicsContext( wxGraphicsContext::CreateFromNative( cg ) );
70 }
71 DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
72
73 SetBackground(wxBrush(window->GetBackgroundColour(),wxSOLID));
74
75 SetFont( window->GetFont() ) ;
76}
77
78wxWindowDCImpl::~wxWindowDCImpl()
79{
80 if ( m_release )
81 {
82 // this must not necessarily be the current context, we must restore the state of the
83 // cg we started with above (before the CGContextTranslateCTM call)
84 CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
85 CGContextRestoreGState(cg);
86 }
87}
88
89void wxWindowDCImpl::DoGetSize( int* width, int* height ) const
90{
91 if ( width )
92 *width = m_width;
93 if ( height )
94 *height = m_height;
95}
96
97wxBitmap wxWindowDCImpl::DoGetAsBitmap(const wxRect *subrect) const
98{
99 // wxScreenDC is derived from wxWindowDC, so a screen dc will
100 // call this method when a Blit is performed with it as a source.
101 if (!m_window)
102 return wxNullBitmap;
103
104#ifdef __LP64__
105 return wxNullBitmap;
106#else
107 ControlRef handle = (ControlRef) m_window->GetHandle();
108 if ( !handle )
109 return wxNullBitmap;
110
111 HIRect rect;
112 CGImageRef image;
113 CGContextRef context;
114 void* data;
115
116 size_t bytesPerRow;
117
118 HIViewCreateOffscreenImage( handle, 0, &rect, &image);
119
120
121 int width = subrect != NULL ? subrect->width : (int)rect.size.width;
122 int height = subrect != NULL ? subrect->height : (int)rect.size.height ;
123
124 bytesPerRow = ( ( width * 8 * 4 + 7 ) / 8 );
125
126 data = calloc( 1, bytesPerRow * height );
127 context = CGBitmapContextCreate( data, width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedFirst );
128
129 if ( subrect )
130 rect = CGRectOffset( rect, -subrect->x, -subrect->y ) ;
131 CGContextDrawImage( context, rect, image );
132
133 unsigned char* buffer = (unsigned char*) data;
134 wxBitmap bmp = wxBitmap(width, height, 32);
135 wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
136
137 wxAlphaPixelData::Iterator p(pixData);
138 for (int y=0; y<height; y++) {
139 wxAlphaPixelData::Iterator rowStart = p;
140 for (int x=0; x<width; x++) {
141 unsigned char a = buffer[3];
142 p.Red() = a; buffer++;
143 p.Green() = a; buffer++;
144 p.Blue() = a; buffer++;
145 p.Alpha() = a; buffer++;
146 ++p;
147 }
148 p = rowStart;
149 p.OffsetY(pixData, 1);
150 }
151
152 return bmp;
153#endif
154}
155
156/*
157 * wxClientDCImpl
158 */
159
160IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
161
162wxClientDCImpl::wxClientDCImpl( wxDC *owner )
163 : wxWindowDCImpl( owner )
164{
165}
166
167wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *window ) :
168 wxWindowDCImpl( owner, window )
169{
170 wxCHECK_RET( window, _T("invalid window in wxClientDCImpl") );
171 wxPoint origin = window->GetClientAreaOrigin() ;
172 m_window->GetClientSize( &m_width , &m_height);
173 SetDeviceOrigin( origin.x, origin.y );
174 DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
175}
176
177wxClientDCImpl::~wxClientDCImpl()
178{
179}
180
181/*
182 * wxPaintDCImpl
183 */
184
185IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxWindowDCImpl)
186
187wxPaintDCImpl::wxPaintDCImpl( wxDC *owner )
188 : wxWindowDCImpl( owner )
189{
190}
191
192wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *window ) :
193 wxWindowDCImpl( owner, window )
194{
195 wxPoint origin = window->GetClientAreaOrigin() ;
196 m_window->GetClientSize( &m_width , &m_height);
197 SetDeviceOrigin( origin.x, origin.y );
198 DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
199}
200
201wxPaintDCImpl::~wxPaintDCImpl()
202{
203}