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