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