src/mac/carbon/metafile.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "metafile.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_METAFILE
  24
  25 #ifndef WX_PRECOMP
  26 #include "wx/utils.h"
  27 #include "wx/app.h"
  28 #endif
  29
  30 #include "wx/metafile.h"
  31 #include "wx/clipbrd.h"
  32
  33 #include "wx/mac/private.h"
  34
  35 #include <stdio.h>
  36 #include <string.h>
  37
  38 extern bool wxClipboardIsOpen;
  39
  40 #if !USE_SHARED_LIBRARY
  41 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  42 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  43 #endif
  44
  45 /*
  46  * Metafiles
  47  * Currently, the only purpose for making a metafile is to put
  48  * it on the clipboard.
  49  */
  50
  51 wxMetafileRefData::wxMetafileRefData(void)
  52 {
  53     m_metafile = 0;
  54 }
  55
  56 wxMetafileRefData::~wxMetafileRefData(void)
  57 {
  58     if (m_metafile)
  59     {
  60         KillPicture( (PicHandle) m_metafile ) ;
  61         m_metafile = 0;
  62     }
  63 }
  64
  65 wxMetaFile::wxMetaFile(const wxString& file)
  66 {
  67     m_refData = new wxMetafileRefData;
  68
  69
  70     M_METAFILEDATA->m_metafile = 0;
  71     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet") ) ;
  72 /*
  73     if (!file.IsNull() && (file.Cmp("") == 0))
  74         M_METAFILEDATA->m_metafile = (WXHANDLE) GetMetaFile(file);
  75 */
  76 }
  77
  78 wxMetaFile::~wxMetaFile()
  79 {
  80 }
  81
  82 bool wxMetaFile::SetClipboard(int width, int height)
  83 {
  84 #if wxUSE_DRAG_AND_DROP
  85     //TODO finishi this port , we need the data obj first
  86     if (!m_refData)
  87         return FALSE;
  88
  89     bool alreadyOpen=wxTheClipboard->IsOpened() ;
  90     if (!alreadyOpen)
  91     {
  92         wxTheClipboard->Open();
  93         wxTheClipboard->Clear();
  94     }
  95     wxDataObject *data =
  96         new wxMetafileDataObject( *this) ;
  97     bool success = wxTheClipboard->SetData(data);
  98     if (!alreadyOpen)
  99         wxTheClipboard->Close();
 100     return (bool) success;
 101 #endif
 102     return TRUE ;
 103 }
 104
 105 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 106 {
 107     if (!m_refData)
 108         m_refData = new wxMetafileRefData;
 109     if ( M_METAFILEDATA->m_metafile )
 110         KillPicture( (PicHandle) M_METAFILEDATA->m_metafile ) ;
 111
 112     M_METAFILEDATA->m_metafile = mf;
 113 }
 114
 115 bool wxMetaFile::Play(wxDC *dc)
 116 {
 117     if (!m_refData)
 118         return FALSE;
 119
 120     if (!dc->Ok() )
 121         return FALSE;
 122
 123     {
 124         wxMacPortSetter helper( dc ) ;
 125         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 126         DrawPicture( pict , &(**pict).picFrame ) ;
 127     }
 128     return TRUE;
 129 }
 130
 131 wxSize wxMetaFile::GetSize() const
 132 {
 133     wxSize size = wxDefaultSize ;
 134     if ( Ok() )
 135     {
 136         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 137         Rect &r = (**pict).picFrame ;
 138         size.x = r.right - r.left ;
 139         size.y = r.bottom - r.top ;
 140     }
 141
 142     return size;
 143 }
 144
 145 /*
 146  * Metafile device context
 147  *
 148  */
 149
 150 // New constructor that takes origin and extent. If you use this, don't
 151 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 152
 153 wxMetaFileDC::wxMetaFileDC(const wxString& filename ,
 154                     int width , int height ,
 155                     const wxString& WXUNUSED(description) )
 156 {
 157     wxASSERT_MSG( width == 0 || height == 0 , _T("no arbitration of metafilesize supported") ) ;
 158     wxASSERT_MSG( filename.IsEmpty() , _T("no file based metafile support yet")) ;
 159
 160     m_metaFile = new wxMetaFile(filename) ;
 161     Rect r={0,0,height,width} ;
 162
 163     RectRgn( (RgnHandle) m_macBoundaryClipRgn , &r ) ;
 164     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 165
 166     m_metaFile->SetHMETAFILE( OpenPicture( &r ) ) ;
 167     ::GetPort( (GrafPtr*) &m_macPort ) ;
 168     m_ok = TRUE ;
 169
 170     SetMapMode(wxMM_TEXT);
 171 }
 172
 173 wxMetaFileDC::~wxMetaFileDC()
 174 {
 175 }
 176
 177 void wxMetaFileDC::DoGetSize(int *width, int *height) const
 178 {
 179     wxCHECK_RET( m_metaFile , _T("GetSize() doesn't work without a metafile") );
 180
 181     wxSize sz = m_metaFile->GetSize() ;
 182     if (width) (*width) = sz.x;
 183     if (height) (*height) = sz.y;
 184 }
 185
 186 wxMetaFile *wxMetaFileDC::Close()
 187 {
 188     ClosePicture() ;
 189     return m_metaFile;
 190 }
 191
 192 #if wxUSE_DATAOBJ
 193 size_t wxMetafileDataObject::GetDataSize() const
 194 {
 195     return GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ;
 196 }
 197
 198 bool wxMetafileDataObject::GetDataHere(void *buf) const
 199 {
 200     memcpy( buf , (*(PicHandle)(*((wxMetafile*)&m_metafile)).GetHMETAFILE()) ,
 201         GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ) ;
 202     return true ;
 203 }
 204
 205 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 206 {
 207     Handle handle = NewHandle( len ) ;
 208     SetHandleSize( handle , len ) ;
 209     memcpy( *handle , buf , len ) ;
 210     m_metafile.SetHMETAFILE( handle ) ;
 211     return true ;
 212 }
 213 #endif
 214
 215 #endif