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 // Copyright: (c) Stefan Csomor
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10 //
11 // Currently, the only purpose for making a metafile
12 // is to put it on the clipboard.
13
14
15 #include "wx/wxprec.h"
16
17 #if wxUSE_METAFILE
18
19 #ifndef WX_PRECOMP
20 #include "wx/utils.h"
21 #include "wx/app.h"
22 #endif
23
24 #include "wx/metafile.h"
25 #include "wx/clipbrd.h"
26 #include "wx/osx/private.h"
27 #include "wx/graphics.h"
28 #include "wx/osx/metafile.h"
29
30 #include <stdio.h>
31 #include <string.h>
32
33 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
34 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
35 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDCImpl, wxGCDCImpl)
36
37 #define M_METAFILEREFDATA( a ) ((wxMetafileRefData*)(a).GetRefData())
38
39 class wxMetafileRefData : public wxGDIRefData
40 {
41 public:
42 // default ctor needed for CreateGDIRefData(), must be initialized later
wxMetafileRefData()43 wxMetafileRefData() { Init(); }
44
45 // creates a metafile from memory, assumes ownership
46 wxMetafileRefData(CFDataRef data);
47
48 // prepares a recording metafile
49 wxMetafileRefData( int width, int height);
50
51 // prepares a metafile to be read from a file (if filename is not empty)
52 wxMetafileRefData( const wxString& filename);
53
54 virtual ~wxMetafileRefData();
55
IsOk() const56 virtual bool IsOk() const { return m_data != NULL; }
57
58 void Init();
59
GetWidth() const60 int GetWidth() const { return m_width; }
GetHeight() const61 int GetHeight() const { return m_height; }
62
GetPDFDocument() const63 CGPDFDocumentRef GetPDFDocument() const { return m_pdfDoc; }
64 void UpdateDocumentFromData() ;
65
GetData() const66 const wxCFDataRef& GetData() const { return m_data; }
GetContext() const67 CGContextRef GetContext() const { return m_context; }
68
69 // ends the recording
70 void Close();
71 private:
72 wxCFDataRef m_data;
73 wxCFRef<CGPDFDocumentRef> m_pdfDoc;
74 CGContextRef m_context;
75
76 int m_width ;
77 int m_height ;
78
79
80 // Our m_pdfDoc field can't be easily (deep) copied and so we don't define a
81 // copy ctor.
82 wxDECLARE_NO_COPY_CLASS(wxMetafileRefData);
83 };
84
wxMetafileRefData(CFDataRef data)85 wxMetafileRefData::wxMetafileRefData(CFDataRef data) :
86 m_data(data)
87 {
88 Init();
89 UpdateDocumentFromData();
90 }
91
wxMetafileRefData(const wxString & filename)92 wxMetafileRefData::wxMetafileRefData( const wxString& filename )
93 {
94 Init();
95
96 if ( !filename.empty() )
97 {
98 wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxCFStringRef(filename)));
99 CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
100 wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
101 m_pdfDoc.reset(CGPDFDocumentCreateWithURL(url));
102 }
103 }
104
105
wxMetafileRefData(int width,int height)106 wxMetafileRefData::wxMetafileRefData( int width, int height)
107 {
108 Init();
109
110 m_width = width;
111 m_height = height;
112
113 CGRect r = CGRectMake( 0 , 0 , width , height );
114
115 CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
116 m_data.reset(data);
117 CGDataConsumerRef dataConsumer = wxMacCGDataConsumerCreateWithCFData(data);
118 m_context = CGPDFContextCreate( dataConsumer, (width != 0 && height != 0) ? &r : NULL , NULL );
119 CGDataConsumerRelease( dataConsumer );
120 if ( m_context )
121 {
122 CGPDFContextBeginPage(m_context, NULL);
123
124 CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
125
126 CGContextSetFillColorSpace( m_context, genericColorSpace );
127 CGContextSetStrokeColorSpace( m_context, genericColorSpace );
128
129 CGContextTranslateCTM( m_context , 0 , height ) ;
130 CGContextScaleCTM( m_context , 1 , -1 ) ;
131 }
132 }
133
~wxMetafileRefData()134 wxMetafileRefData::~wxMetafileRefData()
135 {
136 }
137
Init()138 void wxMetafileRefData::Init()
139 {
140 m_context = NULL;
141 m_width = -1;
142 m_height = -1;
143 }
144
Close()145 void wxMetafileRefData::Close()
146 {
147 CGPDFContextEndPage(m_context);
148
149 CGContextRelease(m_context);
150 m_context = NULL;
151
152 UpdateDocumentFromData();
153 }
154
UpdateDocumentFromData()155 void wxMetafileRefData::UpdateDocumentFromData()
156 {
157 wxCFRef<CGDataProviderRef> provider(wxMacCGDataProviderCreateWithCFData(m_data));
158 m_pdfDoc.reset(CGPDFDocumentCreateWithProvider(provider));
159 if ( m_pdfDoc != NULL )
160 {
161 CGPDFPageRef page = CGPDFDocumentGetPage( m_pdfDoc, 1 );
162 CGRect rect = CGPDFPageGetBoxRect ( page, kCGPDFMediaBox);
163 m_width = static_cast<int>(rect.size.width);
164 m_height = static_cast<int>(rect.size.height);
165 }
166 }
167
wxMetaFile(const wxString & file)168 wxMetaFile::wxMetaFile(const wxString& file)
169 {
170 m_refData = new wxMetafileRefData(file);
171 }
172
~wxMetaFile()173 wxMetaFile::~wxMetaFile()
174 {
175 }
176
CreateGDIRefData() const177 wxGDIRefData *wxMetaFile::CreateGDIRefData() const
178 {
179 return new wxMetafileRefData;
180 }
181
182 wxGDIRefData *
CloneGDIRefData(const wxGDIRefData * WXUNUSED (data)) const183 wxMetaFile::CloneGDIRefData(const wxGDIRefData * WXUNUSED(data)) const
184 {
185 wxFAIL_MSG( wxS("Cloning metafiles is not implemented in wxCarbon.") );
186
187 return new wxMetafileRefData;
188 }
189
GetHMETAFILE() const190 WXHMETAFILE wxMetaFile::GetHMETAFILE() const
191 {
192 return (WXHMETAFILE) (CFDataRef) M_METAFILEDATA->GetData();
193 }
194
SetClipboard(int WXUNUSED (width),int WXUNUSED (height))195 bool wxMetaFile::SetClipboard(int WXUNUSED(width), int WXUNUSED(height))
196 {
197 bool success = true;
198
199 #if wxUSE_DRAG_AND_DROP
200 if (m_refData == NULL)
201 return false;
202
203 bool alreadyOpen = wxTheClipboard->IsOpened();
204 if (!alreadyOpen)
205 {
206 wxTheClipboard->Open();
207 wxTheClipboard->Clear();
208 }
209
210 wxDataObject *data = new wxMetafileDataObject( *this );
211 success = wxTheClipboard->SetData( data );
212 if (!alreadyOpen)
213 wxTheClipboard->Close();
214 #endif
215
216 return success;
217 }
218
SetHMETAFILE(WXHMETAFILE mf)219 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
220 {
221 UnRef();
222
223 m_refData = new wxMetafileRefData((CFDataRef)mf);
224 }
225
Play(wxDC * dc)226 bool wxMetaFile::Play(wxDC *dc)
227 {
228 if (!m_refData)
229 return false;
230
231 if (!dc->IsOk())
232 return false;
233
234 {
235 wxDCImpl *impl = dc->GetImpl();
236 wxGCDCImpl *gc_impl = wxDynamicCast(impl, wxGCDCImpl);
237 if (gc_impl)
238 {
239 CGContextRef cg = (CGContextRef) (gc_impl->GetGraphicsContext()->GetNativeContext());
240 CGPDFDocumentRef doc = M_METAFILEDATA->GetPDFDocument();
241 CGPDFPageRef page = CGPDFDocumentGetPage( doc, 1 );
242 wxMacCGContextStateSaver save(cg);
243 CGContextDrawPDFPage( cg, page );
244 }
245 // CGContextTranslateCTM( cg, 0, bounds.size.width );
246 // CGContextScaleCTM( cg, 1, -1 );
247 }
248
249 return true;
250 }
251
GetSize() const252 wxSize wxMetaFile::GetSize() const
253 {
254 wxSize dataSize = wxDefaultSize;
255
256 if (IsOk())
257 {
258 dataSize.x = M_METAFILEDATA->GetWidth();
259 dataSize.y = M_METAFILEDATA->GetHeight();
260 }
261
262 return dataSize;
263 }
264
265 // Metafile device context
266
267 // New constructor that takes origin and extent. If you use this, don't
268 // give origin/extent arguments to wxMakeMetaFilePlaceable.
269
wxMetafileDCImpl(wxDC * owner,const wxString & filename,int width,int height,const wxString & WXUNUSED (description))270 wxMetafileDCImpl::wxMetafileDCImpl(
271 wxDC *owner,
272 const wxString& filename,
273 int width, int height,
274 const wxString& WXUNUSED(description) ) :
275 wxGCDCImpl( owner )
276 {
277 wxASSERT_MSG( width != 0 || height != 0, wxT("no arbitration of metafile size supported") );
278 wxASSERT_MSG( filename.empty(), wxT("no file based metafile support yet"));
279
280 m_metaFile = new wxMetaFile( filename );
281 wxMetafileRefData* metafiledata = new wxMetafileRefData(width, height);
282 m_metaFile->UnRef();
283 m_metaFile->SetRefData( metafiledata );
284
285 SetGraphicsContext( wxGraphicsContext::CreateFromNative(metafiledata->GetContext()));
286 m_ok = (m_graphicContext != NULL) ;
287
288 SetMapMode( wxMM_TEXT );
289 }
290
~wxMetafileDCImpl()291 wxMetafileDCImpl::~wxMetafileDCImpl()
292 {
293 }
294
DoGetSize(int * width,int * height) const295 void wxMetafileDCImpl::DoGetSize(int *width, int *height) const
296 {
297 wxCHECK_RET( m_metaFile, wxT("GetSize() doesn't work without a metafile") );
298
299 wxSize sz = m_metaFile->GetSize();
300 if (width)
301 (*width) = sz.x;
302 if (height)
303 (*height) = sz.y;
304 }
305
Close()306 wxMetaFile *wxMetafileDCImpl::Close()
307 {
308 wxDELETE(m_graphicContext);
309 m_ok = false;
310
311 M_METAFILEREFDATA(*m_metaFile)->Close();
312
313 return m_metaFile;
314 }
315
316 #if wxUSE_DATAOBJ
GetDataSize() const317 size_t wxMetafileDataObject::GetDataSize() const
318 {
319 CFIndex length = 0;
320 wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
321 if ( refData )
322 length = refData->GetData().GetLength();
323 return length;
324 }
325
GetDataHere(void * buf) const326 bool wxMetafileDataObject::GetDataHere(void *buf) const
327 {
328 bool result = false;
329
330 wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
331 if ( refData )
332 {
333 CFIndex length = refData->GetData().GetLength();
334 if ( length > 0 )
335 {
336 result = true ;
337 refData->GetData().GetBytes(CFRangeMake(0,length), (UInt8 *) buf);
338 }
339 }
340 return result;
341 }
342
SetData(size_t len,const void * buf)343 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
344 {
345 wxMetafileRefData* metafiledata = new wxMetafileRefData(wxCFRefFromGet(wxCFDataRef((UInt8*)buf, len).get()));
346 m_metafile.UnRef();
347 m_metafile.SetRefData( metafiledata );
348 return true;
349 }
350 #endif
351
352 #endif
353