src/mac/carbon/clipbrd.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        clipbrd.cpp
   3 // Purpose:     Clipboard functionality
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #pragma implementation "clipbrd.h"
  15 #endif
  16
  17 #include "wx/app.h"
  18 #include "wx/frame.h"
  19 #include "wx/bitmap.h"
  20 #include "wx/utils.h"
  21 #include "wx/metafile.h"
  22 #include "wx/clipbrd.h"
  23
  24 #include <string.h>
  25
  26 #if !USE_SHARED_LIBRARY
  27 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
  28 IMPLEMENT_ABSTRACT_CLASS(wxClipboardClient, wxObject)
  29 #endif
  30
  31 bool wxOpenClipboard()
  32 {
  33     return TRUE;
  34 }
  35
  36 bool wxCloseClipboard()
  37 {
  38     return FALSE;
  39 }
  40
  41 bool wxEmptyClipboard()
  42 {
  43                 ZeroScrap() ;
  44     return FALSE;
  45 }
  46
  47 bool wxClipboardOpen()
  48 {
  49     // TODO
  50     return FALSE;
  51 }
  52
  53 bool wxIsClipboardFormatAvailable(int dataFormat)
  54 {
  55     // TODO
  56     return FALSE;
  57 }
  58
  59 bool wxSetClipboardData(int dataFormat, wxObject *obj, int width, int height)
  60 {
  61     // TODO
  62     return FALSE;
  63 }
  64
  65 wxObject *wxGetClipboardData(int dataFormat, long *len)
  66 {
  67     // TODO
  68     return NULL;
  69 }
  70
  71 int  wxEnumClipboardFormats(int dataFormat)
  72 {
  73     // TODO
  74     return 0;
  75 }
  76
  77 int  wxRegisterClipboardFormat(char *formatName)
  78 {
  79     // TODO
  80     return 0;
  81 }
  82
  83 bool wxGetClipboardFormatName(int dataFormat, char *formatName, int maxCount)
  84 {
  85     // TODO
  86     return FALSE;
  87 }
  88
  89 /*
  90  * Generalized clipboard implementation by Matthew Flatt
  91  */
  92
  93 wxClipboard *wxTheClipboard = NULL;
  94
  95 void wxInitClipboard()
  96 {
  97   if (!wxTheClipboard)
  98     wxTheClipboard = new wxClipboard;
  99 }
 100
 101 wxClipboard::wxClipboard()
 102 {
 103   clipOwner = NULL;
 104   cbString = NULL;
 105 }
 106
 107 wxClipboard::~wxClipboard()
 108 {
 109   if (clipOwner)
 110     clipOwner->BeingReplaced();
 111   if (cbString)
 112     delete[] cbString;
 113 }
 114
 115 static int FormatStringToID(char *str)
 116 {
 117   if (!strcmp(str, "TEXT"))
 118     return wxDF_TEXT;
 119
 120   return wxRegisterClipboardFormat(str);
 121 }
 122
 123 void wxClipboard::SetClipboardClient(wxClipboardClient *client, long time)
 124 {
 125   bool got_selection;
 126
 127   if (clipOwner)
 128     clipOwner->BeingReplaced();
 129   clipOwner = client;
 130   if (cbString) {
 131     delete[] cbString;
 132     cbString = NULL;
 133   }
 134
 135   if (wxOpenClipboard()) {
 136     char **formats, *data;
 137          int i;
 138     int ftype;
 139     long size;
 140
 141     formats = clipOwner->formats.ListToArray(FALSE);
 142     for (i = clipOwner->formats.Number(); i--; ) {
 143       ftype = FormatStringToID(formats[i]);
 144       data = clipOwner->GetData(formats[i], &size);
 145       if (!wxSetClipboardData(ftype, (wxObject *)data, size, 1)) {
 146         got_selection = FALSE;
 147         break;
 148       }
 149     }
 150
 151     if (i < 0)
 152       got_selection = wxCloseClipboard();
 153   } else
 154     got_selection = FALSE;
 155
 156   got_selection = FALSE; // Assume another process takes over
 157
 158   if (!got_selection) {
 159     clipOwner->BeingReplaced();
 160          clipOwner = NULL;
 161   }
 162 }
 163
 164 wxClipboardClient *wxClipboard::GetClipboardClient()
 165 {
 166   return clipOwner;
 167 }
 168
 169 void wxClipboard::SetClipboardString(char *str, long time)
 170 {/*
 171   bool got_selection;
 172
 173   if (clipOwner) {
 174     clipOwner->BeingReplaced();
 175     clipOwner = NULL;
 176   }
 177   if (cbString)
 178     delete[] cbString;
 179
 180   cbString = str;
 181
 182   if (wxOpenClipboard()) {
 183     if (!wxSetClipboardData(wxDF_TEXT, (wxObject *)str))
 184       got_selection = FALSE;
 185     else
 186                 got_selection = wxCloseClipboard();
 187   } else
 188     got_selection = FALSE;
 189
 190   got_selection = FALSE; // Assume another process takes over
 191
 192   if (!got_selection) {
 193     delete[] cbString;
 194     cbString = NULL;
 195   }
 196   */
 197 }
 198
 199 char *wxClipboard::GetClipboardString(long time)
 200 {
 201   char *str;
 202   long length;
 203
 204   str = GetClipboardData("TEXT", &length, time);
 205   if (!str) {
 206     str = new char[1];
 207     *str = 0;
 208   }
 209
 210   return str;
 211 }
 212
 213 char *wxClipboard::GetClipboardData(char *format, long *length, long time)
 214 {
 215   if (clipOwner)  {
 216          if (clipOwner->formats.Member(format))
 217       return clipOwner->GetData(format, length);
 218     else
 219       return NULL;
 220   } else if (cbString) {
 221     if (!strcmp(format, "TEXT"))
 222       return copystring(cbString);
 223     else
 224       return NULL;
 225   } else {
 226     if (wxOpenClipboard()) {
 227       receivedString = (char *)wxGetClipboardData(FormatStringToID(format),
 228                                                   length);
 229       wxCloseClipboard();
 230     } else
 231       receivedString = NULL;
 232
 233     return receivedString;
 234   }
 235 }
 236