src/mac/classic/metafile.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/classic/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 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_METAFILE
  20
  21 #include "wx/metafile.h"
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/utils.h"
  25     #include "wx/app.h"
  26 #endif
  27
  28 #include "wx/clipbrd.h"
  29
  30 #include "wx/mac/private.h"
  31
  32 #include <stdio.h>
  33 #include <string.h>
  34
  35 extern bool wxClipboardIsOpen;
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  38 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  39
  40 /*
  41  * Metafiles
  42  * Currently, the only purpose for making a metafile is to put
  43  * it on the clipboard.
  44  */
  45
  46 wxMetafileRefData::wxMetafileRefData(void)
  47 {
  48     m_metafile = 0;
  49 }
  50
  51 wxMetafileRefData::~wxMetafileRefData(void)
  52 {
  53     if (m_metafile)
  54     {
  55         KillPicture( (PicHandle) m_metafile ) ;
  56         m_metafile = 0;
  57     }
  58 }
  59
  60 wxMetaFile::wxMetaFile(const wxString& file)
  61 {
  62     m_refData = new wxMetafileRefData;
  63
  64
  65     M_METAFILEDATA->m_metafile = 0;
  66     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet") ) ;
  67 /*
  68     if (!file.empty())
  69         M_METAFILEDATA->m_metafile = (WXHANDLE) GetMetaFile(file);
  70 */
  71 }
  72
  73 wxMetaFile::~wxMetaFile()
  74 {
  75 }
  76
  77 bool wxMetaFile::SetClipboard(int width, int height)
  78 {
  79 #if wxUSE_DRAG_AND_DROP
  80     //TODO finishi this port , we need the data obj first
  81     if (!m_refData)
  82         return false;
  83
  84     bool alreadyOpen=wxTheClipboard->IsOpened() ;
  85     if (!alreadyOpen)
  86     {
  87         wxTheClipboard->Open();
  88         wxTheClipboard->Clear();
  89     }
  90     wxDataObject *data =
  91         new wxMetafileDataObject( *this) ;
  92     bool success = wxTheClipboard->SetData(data);
  93     if (!alreadyOpen)
  94         wxTheClipboard->Close();
  95     return (bool) success;
  96 #endif
  97     return true ;
  98 }
  99
 100 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 101 {
 102     if (!m_refData)
 103         m_refData = new wxMetafileRefData;
 104     if ( M_METAFILEDATA->m_metafile )
 105         KillPicture( (PicHandle) M_METAFILEDATA->m_metafile ) ;
 106
 107     M_METAFILEDATA->m_metafile = mf;
 108 }
 109
 110 bool wxMetaFile::Play(wxDC *dc)
 111 {
 112     if (!m_refData)
 113         return false;
 114
 115     if (!dc->Ok() )
 116         return false;
 117
 118     {
 119         wxMacPortSetter helper( dc ) ;
 120         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 121         DrawPicture( pict , &(**pict).picFrame ) ;
 122     }
 123     return true;
 124 }
 125
 126 wxSize wxMetaFile::GetSize() const
 127 {
 128     wxSize size = wxDefaultSize ;
 129     if ( Ok() )
 130     {
 131         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 132         Rect &r = (**pict).picFrame ;
 133         size.x = r.right - r.left ;
 134         size.y = r.bottom - r.top ;
 135     }
 136
 137     return size;
 138 }
 139
 140 /*
 141  * Metafile device context
 142  *
 143  */
 144
 145 // New constructor that takes origin and extent. If you use this, don't
 146 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 147
 148 wxMetaFileDC::wxMetaFileDC(const wxString& filename ,
 149                            int width , int height ,
 150                            const wxString& WXUNUSED(description) )
 151 {
 152     wxASSERT_MSG( width == 0 || height == 0 , _T("no arbitration of metafilesize supported") ) ;
 153     wxASSERT_MSG( filename.empty() , _T("no file based metafile support yet")) ;
 154
 155     m_metaFile = new wxMetaFile(filename) ;
 156     Rect r={0,0,height,width} ;
 157
 158     RectRgn( (RgnHandle) m_macBoundaryClipRgn , &r ) ;
 159     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 160
 161     m_metaFile->SetHMETAFILE( OpenPicture( &r ) ) ;
 162     ::GetPort( (GrafPtr*) &m_macPort ) ;
 163     m_ok = true ;
 164
 165     SetMapMode(wxMM_TEXT);
 166 }
 167
 168 wxMetaFileDC::~wxMetaFileDC()
 169 {
 170 }
 171
 172 void wxMetaFileDC::DoGetSize(int *width, int *height) const
 173 {
 174     wxCHECK_RET( m_metaFile , _T("GetSize() doesn't work without a metafile") );
 175
 176     wxSize sz = m_metaFile->GetSize() ;
 177     if (width) (*width) = sz.x;
 178     if (height) (*height) = sz.y;
 179 }
 180
 181 wxMetaFile *wxMetaFileDC::Close()
 182 {
 183     ClosePicture() ;
 184     return m_metaFile;
 185 }
 186
 187 #if wxUSE_DATAOBJ
 188 size_t wxMetafileDataObject::GetDataSize() const
 189 {
 190     return GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ;
 191 }
 192
 193 bool wxMetafileDataObject::GetDataHere(void *buf) const
 194 {
 195     memcpy( buf , (*(PicHandle)(*((wxMetafile*)&m_metafile)).GetHMETAFILE()) ,
 196         GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ) ;
 197     return true ;
 198 }
 199
 200 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 201 {
 202     Handle handle = NewHandle( len ) ;
 203     SetHandleSize( handle , len ) ;
 204     memcpy( *handle , buf , len ) ;
 205     m_metafile.SetHMETAFILE( handle ) ;
 206     return true ;
 207 }
 208 #endif
 209
 210 #endif