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e9576ca5 1/////////////////////////////////////////////////////////////////////////////
e4db172a 2// Name: src/mac/carbon/dcclient.cpp
888dde65 3// Purpose: wxClientDCImpl class
a31a5f85 4// Author: Stefan Csomor
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5// Modified by:
6// Created: 01/02/97
7// RCS-ID: $Id$
a31a5f85 8// Copyright: (c) Stefan Csomor
e4db172a 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12#include "wx/wxprec.h"
13
e9576ca5 14#include "wx/dcclient.h"
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15
16#ifndef WX_PRECOMP
17 #include "wx/log.h"
cdccdfab 18 #include "wx/window.h"
f38924e8 19 #include "wx/dcmemory.h"
9eddec69 20 #include "wx/settings.h"
1832043f 21 #include "wx/toplevel.h"
18680f86 22 #include "wx/math.h"
b3a44e05 23 #include "wx/region.h"
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24#endif
25
8acd14d1 26#include "wx/graphics.h"
c64c9cd3 27#include "wx/rawbmp.h"
76a5e5d2 28#include "wx/mac/private.h"
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29
30//-----------------------------------------------------------------------------
888dde65 31// wxWindowDCImpl
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32//-----------------------------------------------------------------------------
33
888dde65 34IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxGCDCImpl)
e9576ca5 35
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36wxWindowDCImpl::wxWindowDCImpl( wxDC *owner )
37 : wxGCDCImpl( owner )
e9576ca5 38{
1f2b627a 39 m_release = false;
519cb848 40}
e9576ca5 41
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42wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window )
43 : wxGCDCImpl( owner )
519cb848 44{
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45 m_window = window;
46
508b1081 47 WindowRef rootwindow = (WindowRef) window->MacGetTopLevelWindowRef() ;
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48 if (!rootwindow)
49 return;
9b2eab52 50
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51 m_ok = true ;
52
4130e414 53 m_window->GetSize( &m_width , &m_height);
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54 CGContextRef cg = (CGContextRef) window->MacGetCGContextRef();
55 m_release = false;
4130e414 56 if ( cg == NULL )
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57 {
58 SetGraphicsContext( wxGraphicsContext::Create( window ) ) ;
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59 }
60 else
61 {
62 CGContextSaveGState( cg );
63 m_release = true ;
8a438f46 64 // make sure the context is having its origin at the wx-window coordinates of the
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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 }
888dde65 71 DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
e1673e52 72
a01d9a25 73 SetBackground(wxBrush(window->GetBackgroundColour(),wxSOLID));
9b2eab52 74
20b69855 75 SetFont( window->GetFont() ) ;
519cb848 76}
e9576ca5 77
888dde65 78wxWindowDCImpl::~wxWindowDCImpl()
e9576ca5 79{
35ee7124 80 if ( m_release )
a2d6d210 81 {
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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)
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84 CGContextRef cg = (CGContextRef) m_window->MacGetCGContextRef();
85 CGContextRestoreGState(cg);
a2d6d210 86 }
519cb848 87}
e9576ca5 88
888dde65 89void wxWindowDCImpl::DoGetSize( int* width, int* height ) const
1be0560e 90{
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91 if ( width )
92 *width = m_width;
93 if ( height )
94 *height = m_height;
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95}
96
888dde65 97wxBitmap wxWindowDCImpl::DoGetAsBitmap(const wxRect *subrect) const
c64c9cd3 98{
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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;
31c1cbc7 103
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104#ifdef __LP64__
105 return wxNullBitmap;
106#else
8a438f46 107 ControlRef handle = (ControlRef) m_window->GetHandle();
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108 if ( !handle )
109 return wxNullBitmap;
1bd568fa 110
8a438f46 111 HIRect rect;
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112 CGImageRef image;
113 CGContextRef context;
114 void* data;
8a438f46 115
c64c9cd3 116 size_t bytesPerRow;
8a438f46 117
c64c9cd3 118 HIViewCreateOffscreenImage( handle, 0, &rect, &image);
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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
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124 bytesPerRow = ( ( width * 8 * 4 + 7 ) / 8 );
125
126 data = calloc( 1, bytesPerRow * height );
127 context = CGBitmapContextCreate( data, width, height, 8, bytesPerRow, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedFirst );
8a438f46 128
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129 if ( subrect )
130 rect = CGRectOffset( rect, -subrect->x, -subrect->y ) ;
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131 CGContextDrawImage( context, rect, image );
132
8a438f46 133 unsigned char* buffer = (unsigned char*) data;
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134 wxBitmap bmp = wxBitmap(width, height, 32);
135 wxAlphaPixelData pixData(bmp, wxPoint(0,0), wxSize(width, height));
8a438f46 136
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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++;
8a438f46 146 ++p;
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147 }
148 p = rowStart;
149 p.OffsetY(pixData, 1);
150 }
8a438f46 151
c64c9cd3 152 return bmp;
1bd568fa 153#endif
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154}
155
519cb848 156/*
888dde65 157 * wxClientDCImpl
519cb848 158 */
e9576ca5 159
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160IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
161
162wxClientDCImpl::wxClientDCImpl( wxDC *owner )
163 : wxWindowDCImpl( owner )
e9576ca5 164{
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165}
166
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167wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *window ) :
168 wxWindowDCImpl( owner, window )
4130e414 169{
888dde65 170 wxCHECK_RET( window, _T("invalid window in wxClientDCImpl") );
4130e414 171 wxPoint origin = window->GetClientAreaOrigin() ;
4130e414 172 m_window->GetClientSize( &m_width , &m_height);
a2d6d210 173 SetDeviceOrigin( origin.x, origin.y );
888dde65 174 DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
4130e414 175}
e9576ca5 176
888dde65 177wxClientDCImpl::~wxClientDCImpl()
e9576ca5 178{
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179}
180
519cb848 181/*
888dde65 182 * wxPaintDCImpl
519cb848 183 */
e9576ca5 184
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185IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxWindowDCImpl)
186
187wxPaintDCImpl::wxPaintDCImpl( wxDC *owner )
188 : wxWindowDCImpl( owner )
e9576ca5 189{
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190}
191
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192wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *window ) :
193 wxWindowDCImpl( owner, window )
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194{
195 wxPoint origin = window->GetClientAreaOrigin() ;
4130e414 196 m_window->GetClientSize( &m_width , &m_height);
a2d6d210 197 SetDeviceOrigin( origin.x, origin.y );
888dde65 198 DoSetClippingRegion( 0 , 0 , m_width , m_height ) ;
4130e414 199}
e9576ca5 200
888dde65 201wxPaintDCImpl::~wxPaintDCImpl()
e9576ca5 202{
519cb848 203}