src/motif/clipbrd.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        clipbrd.cpp
   3 // Purpose:     Clipboard functionality
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   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     // TODO
  34     return FALSE;
  35 }
  36
  37 bool wxCloseClipboard()
  38 {
  39     // TODO
  40     return FALSE;
  41 }
  42
  43 bool wxEmptyClipboard()
  44 {
  45     // TODO
  46     return FALSE;
  47 }
  48
  49 bool wxClipboardOpen()
  50 {
  51     // TODO
  52     return FALSE;
  53 }
  54
  55 bool wxIsClipboardFormatAvailable(int dataFormat)
  56 {
  57     // TODO
  58     return FALSE;
  59 }
  60
  61 bool wxSetClipboardData(int dataFormat, wxObject *obj, int width, int height)
  62 {
  63     // TODO
  64     return FALSE;
  65 }
  66
  67 wxObject *wxGetClipboardData(int dataFormat, long *len)
  68 {
  69     // TODO
  70     return NULL;
  71 }
  72
  73 int  wxEnumClipboardFormats(int dataFormat)
  74 {
  75     // TODO
  76     return 0;
  77 }
  78
  79 int  wxRegisterClipboardFormat(char *formatName)
  80 {
  81     // TODO
  82     return 0;
  83 }
  84
  85 bool wxGetClipboardFormatName(int dataFormat, char *formatName, int maxCount)
  86 {
  87     // TODO
  88     return FALSE;
  89 }
  90
  91 /*
  92  * Generalized clipboard implementation by Matthew Flatt
  93  */
  94
  95 wxClipboard *wxTheClipboard = NULL;
  96
  97 void wxInitClipboard()
  98 {
  99   if (!wxTheClipboard)
 100     wxTheClipboard = new wxClipboard;
 101 }
 102
 103 wxClipboard::wxClipboard()
 104 {
 105   clipOwner = NULL;
 106   cbString = NULL;
 107 }
 108
 109 wxClipboard::~wxClipboard()
 110 {
 111   if (clipOwner)
 112     clipOwner->BeingReplaced();
 113   if (cbString)
 114     delete[] cbString;
 115 }
 116
 117 static int FormatStringToID(char *str)
 118 {
 119   if (!strcmp(str, "TEXT"))
 120     return wxDF_TEXT;
 121
 122   return wxRegisterClipboardFormat(str);
 123 }
 124
 125 void wxClipboard::SetClipboardClient(wxClipboardClient *client, long time)
 126 {
 127   bool got_selection;
 128
 129   if (clipOwner)
 130     clipOwner->BeingReplaced();
 131   clipOwner = client;
 132   if (cbString) {
 133     delete[] cbString;
 134     cbString = NULL;
 135   }
 136
 137   if (wxOpenClipboard()) {
 138     char **formats, *data;
 139          int i;
 140     int ftype;
 141     long size;
 142
 143     formats = clipOwner->formats.ListToArray(FALSE);
 144     for (i = clipOwner->formats.Number(); i--; ) {
 145       ftype = FormatStringToID(formats[i]);
 146       data = clipOwner->GetData(formats[i], &size);
 147       if (!wxSetClipboardData(ftype, (wxObject *)data, size, 1)) {
 148         got_selection = FALSE;
 149         break;
 150       }
 151     }
 152
 153     if (i < 0)
 154       got_selection = wxCloseClipboard();
 155   } else
 156     got_selection = FALSE;
 157
 158   got_selection = FALSE; // Assume another process takes over
 159
 160   if (!got_selection) {
 161     clipOwner->BeingReplaced();
 162          clipOwner = NULL;
 163   }
 164 }
 165
 166 wxClipboardClient *wxClipboard::GetClipboardClient()
 167 {
 168   return clipOwner;
 169 }
 170
 171 void wxClipboard::SetClipboardString(char *str, long time)
 172 {
 173   bool got_selection;
 174
 175   if (clipOwner) {
 176     clipOwner->BeingReplaced();
 177     clipOwner = NULL;
 178   }
 179   if (cbString)
 180     delete[] cbString;
 181
 182   cbString = str;
 183
 184   if (wxOpenClipboard()) {
 185     if (!wxSetClipboardData(wxDF_TEXT, (wxObject *)str))
 186       got_selection = FALSE;
 187     else
 188                 got_selection = wxCloseClipboard();
 189   } else
 190     got_selection = FALSE;
 191
 192   got_selection = FALSE; // Assume another process takes over
 193
 194   if (!got_selection) {
 195     delete[] cbString;
 196     cbString = NULL;
 197   }
 198 }
 199
 200 char *wxClipboard::GetClipboardString(long time)
 201 {
 202   char *str;
 203   long length;
 204
 205   str = GetClipboardData("TEXT", &length, time);
 206   if (!str) {
 207     str = new char[1];
 208     *str = 0;
 209   }
 210
 211   return str;
 212 }
 213
 214 char *wxClipboard::GetClipboardData(char *format, long *length, long time)
 215 {
 216   if (clipOwner)  {
 217          if (clipOwner->formats.Member(format))
 218       return clipOwner->GetData(format, length);
 219     else
 220       return NULL;
 221   } else if (cbString) {
 222     if (!strcmp(format, "TEXT"))
 223       return copystring(cbString);
 224     else
 225       return NULL;
 226   } else {
 227     if (wxOpenClipboard()) {
 228       receivedString = (char *)wxGetClipboardData(FormatStringToID(format),
 229                                                   length);
 230       wxCloseClipboard();
 231     } else
 232       receivedString = NULL;
 233
 234     return receivedString;
 235   }
 236 }
 237