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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/osx/carbon/metafile.cpp
3 // Purpose: wxMetaFile, wxMetaFileDC etc. These classes are optional.
4 // Author: Stefan Csomor
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Stefan Csomor
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11 //
12 // Currently, the only purpose for making a metafile
13 // is to put it on the clipboard.
14
15
16 #include "wx/wxprec.h"
17
18 #if wxUSE_METAFILE
19
20 #ifndef WX_PRECOMP
21 #include "wx/utils.h"
22 #include "wx/app.h"
23 #endif
24
25 #include "wx/metafile.h"
26 #include "wx/clipbrd.h"
27 #include "wx/osx/private.h"
28 #include "wx/graphics.h"
29 #include "wx/osx/metafile.h"
30
31 #include <stdio.h>
32 #include <string.h>
33
34 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
35 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
36 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDCImpl, wxGCDCImpl)
37
38 #define M_METAFILEREFDATA( a ) ((wxMetafileRefData*)(a).GetRefData())
39
40 class wxMetafileRefData : public wxGDIRefData
41 {
42 public:
43 // default ctor needed for CreateGDIRefData(), must be initialized later
44 wxMetafileRefData() { Init(); }
45
46 // creates a metafile from memory, assumes ownership
47 wxMetafileRefData(CFDataRef data);
48
49 // prepares a recording metafile
50 wxMetafileRefData( int width, int height);
51
52 // prepares a metafile to be read from a file (if filename is not empty)
53 wxMetafileRefData( const wxString& filename);
54
55 virtual ~wxMetafileRefData();
56
57 virtual bool IsOk() const { return m_data != NULL; }
58
59 void Init();
60
61 int GetWidth() const { return m_width; }
62 int GetHeight() const { return m_height; }
63
64 CGPDFDocumentRef GetPDFDocument() const { return m_pdfDoc; }
65 void UpdateDocumentFromData() ;
66
67 const wxCFDataRef& GetData() const { return m_data; }
68 CGContextRef GetContext() const { return m_context; }
69
70 // ends the recording
71 void Close();
72 private:
73 wxCFDataRef m_data;
74 wxCFRef<CGPDFDocumentRef> m_pdfDoc;
75 CGContextRef m_context;
76
77 int m_width ;
78 int m_height ;
79
80
81 // Our m_pdfDoc field can't be easily (deep) copied and so we don't define a
82 // copy ctor.
83 wxDECLARE_NO_COPY_CLASS(wxMetafileRefData);
84 };
85
86 wxMetafileRefData::wxMetafileRefData(CFDataRef data) :
87 m_data(data)
88 {
89 Init();
90 UpdateDocumentFromData();
91 }
92
93 wxMetafileRefData::wxMetafileRefData( const wxString& filename )
94 {
95 Init();
96
97 if ( !filename.empty() )
98 {
99 wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxCFStringRef(filename)));
100 CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
101 wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
102 m_pdfDoc.reset(CGPDFDocumentCreateWithURL(url));
103 }
104 }
105
106
107 wxMetafileRefData::wxMetafileRefData( int width, int height)
108 {
109 Init();
110
111 m_width = width;
112 m_height = height;
113
114 CGRect r = CGRectMake( 0 , 0 , width , height );
115
116 CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
117 m_data.reset(data);
118 CGDataConsumerRef dataConsumer = wxMacCGDataConsumerCreateWithCFData(data);
119 m_context = CGPDFContextCreate( dataConsumer, (width != 0 && height != 0) ? &r : NULL , NULL );
120 CGDataConsumerRelease( dataConsumer );
121 if ( m_context )
122 {
123 CGPDFContextBeginPage(m_context, NULL);
124
125 CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
126
127 CGContextSetFillColorSpace( m_context, genericColorSpace );
128 CGContextSetStrokeColorSpace( m_context, genericColorSpace );
129
130 CGContextTranslateCTM( m_context , 0 , height ) ;
131 CGContextScaleCTM( m_context , 1 , -1 ) ;
132 }
133 }
134
135 wxMetafileRefData::~wxMetafileRefData()
136 {
137 }
138
139 void wxMetafileRefData::Init()
140 {
141 m_context = NULL;
142 m_width = -1;
143 m_height = -1;
144 }
145
146 void wxMetafileRefData::Close()
147 {
148 CGPDFContextEndPage(m_context);
149
150 CGContextRelease(m_context);
151 m_context = NULL;
152
153 UpdateDocumentFromData();
154 }
155
156 void wxMetafileRefData::UpdateDocumentFromData()
157 {
158 wxCFRef<CGDataProviderRef> provider(wxMacCGDataProviderCreateWithCFData(m_data));
159 m_pdfDoc.reset(CGPDFDocumentCreateWithProvider(provider));
160 if ( m_pdfDoc != NULL )
161 {
162 CGPDFPageRef page = CGPDFDocumentGetPage( m_pdfDoc, 1 );
163 CGRect rect = CGPDFPageGetBoxRect ( page, kCGPDFMediaBox);
164 m_width = static_cast<int>(rect.size.width);
165 m_height = static_cast<int>(rect.size.height);
166 }
167 }
168
169 wxMetaFile::wxMetaFile(const wxString& file)
170 {
171 m_refData = new wxMetafileRefData(file);
172 }
173
174 wxMetaFile::~wxMetaFile()
175 {
176 }
177
178 wxGDIRefData *wxMetaFile::CreateGDIRefData() const
179 {
180 return new wxMetafileRefData;
181 }
182
183 wxGDIRefData *
184 wxMetaFile::CloneGDIRefData(const wxGDIRefData * WXUNUSED(data)) const
185 {
186 wxFAIL_MSG( wxS("Cloning metafiles is not implemented in wxCarbon.") );
187
188 return new wxMetafileRefData;
189 }
190
191 WXHMETAFILE wxMetaFile::GetHMETAFILE() const
192 {
193 return (WXHMETAFILE) (CFDataRef) M_METAFILEDATA->GetData();
194 }
195
196 bool wxMetaFile::SetClipboard(int WXUNUSED(width), int WXUNUSED(height))
197 {
198 bool success = true;
199
200 #if wxUSE_DRAG_AND_DROP
201 if (m_refData == NULL)
202 return false;
203
204 bool alreadyOpen = wxTheClipboard->IsOpened();
205 if (!alreadyOpen)
206 {
207 wxTheClipboard->Open();
208 wxTheClipboard->Clear();
209 }
210
211 wxDataObject *data = new wxMetafileDataObject( *this );
212 success = wxTheClipboard->SetData( data );
213 if (!alreadyOpen)
214 wxTheClipboard->Close();
215 #endif
216
217 return success;
218 }
219
220 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
221 {
222 UnRef();
223
224 m_refData = new wxMetafileRefData((CFDataRef)mf);
225 }
226
227 bool wxMetaFile::Play(wxDC *dc)
228 {
229 if (!m_refData)
230 return false;
231
232 if (!dc->IsOk())
233 return false;
234
235 {
236 wxDCImpl *impl = dc->GetImpl();
237 wxGCDCImpl *gc_impl = wxDynamicCast(impl, wxGCDCImpl);
238 if (gc_impl)
239 {
240 CGContextRef cg = (CGContextRef) (gc_impl->GetGraphicsContext()->GetNativeContext());
241 CGPDFDocumentRef doc = M_METAFILEDATA->GetPDFDocument();
242 CGPDFPageRef page = CGPDFDocumentGetPage( doc, 1 );
243 wxMacCGContextStateSaver save(cg);
244 CGContextDrawPDFPage( cg, page );
245 }
246 // CGContextTranslateCTM( cg, 0, bounds.size.width );
247 // CGContextScaleCTM( cg, 1, -1 );
248 }
249
250 return true;
251 }
252
253 wxSize wxMetaFile::GetSize() const
254 {
255 wxSize dataSize = wxDefaultSize;
256
257 if (IsOk())
258 {
259 dataSize.x = M_METAFILEDATA->GetWidth();
260 dataSize.y = M_METAFILEDATA->GetHeight();
261 }
262
263 return dataSize;
264 }
265
266 // Metafile device context
267
268 // New constructor that takes origin and extent. If you use this, don't
269 // give origin/extent arguments to wxMakeMetaFilePlaceable.
270
271 wxMetafileDCImpl::wxMetafileDCImpl(
272 wxDC *owner,
273 const wxString& filename,
274 int width, int height,
275 const wxString& WXUNUSED(description) ) :
276 wxGCDCImpl( owner )
277 {
278 wxASSERT_MSG( width != 0 || height != 0, wxT("no arbitration of metafile size supported") );
279 wxASSERT_MSG( filename.empty(), wxT("no file based metafile support yet"));
280
281 m_metaFile = new wxMetaFile( filename );
282 wxMetafileRefData* metafiledata = new wxMetafileRefData(width, height);
283 m_metaFile->UnRef();
284 m_metaFile->SetRefData( metafiledata );
285
286 SetGraphicsContext( wxGraphicsContext::CreateFromNative(metafiledata->GetContext()));
287 m_ok = (m_graphicContext != NULL) ;
288
289 SetMapMode( wxMM_TEXT );
290 }
291
292 wxMetafileDCImpl::~wxMetafileDCImpl()
293 {
294 }
295
296 void wxMetafileDCImpl::DoGetSize(int *width, int *height) const
297 {
298 wxCHECK_RET( m_metaFile, wxT("GetSize() doesn't work without a metafile") );
299
300 wxSize sz = m_metaFile->GetSize();
301 if (width)
302 (*width) = sz.x;
303 if (height)
304 (*height) = sz.y;
305 }
306
307 wxMetaFile *wxMetafileDCImpl::Close()
308 {
309 wxDELETE(m_graphicContext);
310 m_ok = false;
311
312 M_METAFILEREFDATA(*m_metaFile)->Close();
313
314 return m_metaFile;
315 }
316
317 #if wxUSE_DATAOBJ
318 size_t wxMetafileDataObject::GetDataSize() const
319 {
320 CFIndex length = 0;
321 wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
322 if ( refData )
323 length = refData->GetData().GetLength();
324 return length;
325 }
326
327 bool wxMetafileDataObject::GetDataHere(void *buf) const
328 {
329 bool result = false;
330
331 wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
332 if ( refData )
333 {
334 CFIndex length = refData->GetData().GetLength();
335 if ( length > 0 )
336 {
337 result = true ;
338 refData->GetData().GetBytes(CFRangeMake(0,length), (UInt8 *) buf);
339 }
340 }
341 return result;
342 }
343
344 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
345 {
346 wxMetafileRefData* metafiledata = new wxMetafileRefData(wxCFRefFromGet(wxCFDataRef((UInt8*)buf, len).get()));
347 m_metafile.UnRef();
348 m_metafile.SetRefData( metafiledata );
349 return true;
350 }
351 #endif
352
353 #endif