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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/clipboard.h" | |
| 6 | |
| 7 #include <gtk/gtk.h> | |
| 8 #include <map> | |
| 9 #include <set> | |
| 10 #include <string> | |
| 11 #include <utility> | |
| 12 | |
| 13 #include "base/file_path.h" | |
| 14 #include "base/gfx/size.h" | |
| 15 #include "base/scoped_ptr.h" | |
| 16 #include "base/linux_util.h" | |
| 17 #include "base/string_util.h" | |
| 18 | |
| 19 namespace { | |
| 20 | |
| 21 const char kMimeBmp[] = "image/bmp"; | |
| 22 const char kMimeHtml[] = "text/html"; | |
| 23 const char kMimeText[] = "text/plain"; | |
| 24 const char kMimeURI[] = "text/uri-list"; | |
| 25 const char kMimeWebkitSmartPaste[] = "chromium/x-webkit-paste"; | |
| 26 | |
| 27 std::string GdkAtomToString(const GdkAtom& atom) { | |
| 28 gchar* name = gdk_atom_name(atom); | |
| 29 std::string rv(name); | |
| 30 g_free(name); | |
| 31 return rv; | |
| 32 } | |
| 33 | |
| 34 GdkAtom StringToGdkAtom(const std::string& str) { | |
| 35 return gdk_atom_intern(str.c_str(), false); | |
| 36 } | |
| 37 | |
| 38 // GtkClipboardGetFunc callback. | |
| 39 // GTK will call this when an application wants data we copied to the clipboard. | |
| 40 void GetData(GtkClipboard* clipboard, | |
| 41 GtkSelectionData* selection_data, | |
| 42 guint info, | |
| 43 gpointer user_data) { | |
| 44 Clipboard::TargetMap* data_map = | |
| 45 reinterpret_cast<Clipboard::TargetMap*>(user_data); | |
| 46 | |
| 47 std::string target_string = GdkAtomToString(selection_data->target); | |
| 48 Clipboard::TargetMap::iterator iter = data_map->find(target_string); | |
| 49 | |
| 50 if (iter == data_map->end()) | |
| 51 return; | |
| 52 | |
| 53 if (target_string == kMimeBmp) { | |
| 54 gtk_selection_data_set_pixbuf(selection_data, | |
| 55 reinterpret_cast<GdkPixbuf*>(iter->second.first)); | |
| 56 } else if (target_string == kMimeURI) { | |
| 57 gchar* uri_list[2]; | |
| 58 uri_list[0] = reinterpret_cast<gchar*>(iter->second.first); | |
| 59 uri_list[1] = NULL; | |
| 60 gtk_selection_data_set_uris(selection_data, uri_list); | |
| 61 } else { | |
| 62 gtk_selection_data_set(selection_data, selection_data->target, 8, | |
| 63 reinterpret_cast<guchar*>(iter->second.first), | |
| 64 iter->second.second); | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 // GtkClipboardClearFunc callback. | |
| 69 // We are guaranteed this will be called exactly once for each call to | |
| 70 // gtk_clipboard_set_with_data | |
| 71 void ClearData(GtkClipboard* clipboard, | |
| 72 gpointer user_data) { | |
| 73 Clipboard::TargetMap* map = | |
| 74 reinterpret_cast<Clipboard::TargetMap*>(user_data); | |
| 75 std::set<char*> ptrs; | |
| 76 | |
| 77 for (Clipboard::TargetMap::iterator iter = map->begin(); | |
| 78 iter != map->end(); ++iter) { | |
| 79 if (iter->first == kMimeBmp) | |
| 80 g_object_unref(reinterpret_cast<GdkPixbuf*>(iter->second.first)); | |
| 81 else | |
| 82 ptrs.insert(iter->second.first); | |
| 83 } | |
| 84 | |
| 85 for (std::set<char*>::iterator iter = ptrs.begin(); | |
| 86 iter != ptrs.end(); ++iter) { | |
| 87 delete[] *iter; | |
| 88 } | |
| 89 | |
| 90 delete map; | |
| 91 } | |
| 92 | |
| 93 // Called on GdkPixbuf destruction; see WriteBitmap(). | |
| 94 void GdkPixbufFree(guchar* pixels, gpointer data) { | |
| 95 free(pixels); | |
| 96 } | |
| 97 | |
| 98 } // namespace | |
| 99 | |
| 100 Clipboard::Clipboard() { | |
| 101 clipboard_ = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD); | |
| 102 primary_selection_ = gtk_clipboard_get(GDK_SELECTION_PRIMARY); | |
| 103 } | |
| 104 | |
| 105 Clipboard::~Clipboard() { | |
| 106 // TODO(estade): do we want to save clipboard data after we exit? | |
| 107 // gtk_clipboard_set_can_store and gtk_clipboard_store work | |
| 108 // but have strangely awful performance. | |
| 109 } | |
| 110 | |
| 111 void Clipboard::WriteObjects(const ObjectMap& objects) { | |
| 112 clipboard_data_ = new TargetMap(); | |
| 113 | |
| 114 for (ObjectMap::const_iterator iter = objects.begin(); | |
| 115 iter != objects.end(); ++iter) { | |
| 116 DispatchObject(static_cast<ObjectType>(iter->first), iter->second); | |
| 117 } | |
| 118 | |
| 119 SetGtkClipboard(); | |
| 120 } | |
| 121 | |
| 122 // When a URL is copied from a render view context menu (via "copy link | |
| 123 // location", for example), we additionally stick it in the X clipboard. This | |
| 124 // matches other linux browsers. | |
| 125 void Clipboard::DidWriteURL(const std::string& utf8_text) { | |
| 126 gtk_clipboard_set_text(primary_selection_, utf8_text.c_str(), | |
| 127 utf8_text.length()); | |
| 128 } | |
| 129 | |
| 130 // Take ownership of the GTK clipboard and inform it of the targets we support. | |
| 131 void Clipboard::SetGtkClipboard() { | |
| 132 scoped_array<GtkTargetEntry> targets( | |
| 133 new GtkTargetEntry[clipboard_data_->size()]); | |
| 134 | |
| 135 int i = 0; | |
| 136 for (Clipboard::TargetMap::iterator iter = clipboard_data_->begin(); | |
| 137 iter != clipboard_data_->end(); ++iter, ++i) { | |
| 138 targets[i].target = static_cast<gchar*>(malloc(iter->first.size() + 1)); | |
| 139 memcpy(targets[i].target, iter->first.data(), iter->first.size()); | |
| 140 targets[i].target[iter->first.size()] = '\0'; | |
| 141 | |
| 142 targets[i].flags = 0; | |
| 143 targets[i].info = i; | |
| 144 } | |
| 145 | |
| 146 gtk_clipboard_set_with_data(clipboard_, targets.get(), | |
| 147 clipboard_data_->size(), | |
| 148 GetData, ClearData, | |
| 149 clipboard_data_); | |
| 150 | |
| 151 for (size_t i = 0; i < clipboard_data_->size(); i++) | |
| 152 free(targets[i].target); | |
| 153 } | |
| 154 | |
| 155 void Clipboard::WriteText(const char* text_data, size_t text_len) { | |
| 156 char* data = new char[text_len]; | |
| 157 memcpy(data, text_data, text_len); | |
| 158 | |
| 159 InsertMapping(kMimeText, data, text_len); | |
| 160 InsertMapping("TEXT", data, text_len); | |
| 161 InsertMapping("STRING", data, text_len); | |
| 162 InsertMapping("UTF8_STRING", data, text_len); | |
| 163 InsertMapping("COMPOUND_TEXT", data, text_len); | |
| 164 } | |
| 165 | |
| 166 void Clipboard::WriteHTML(const char* markup_data, | |
| 167 size_t markup_len, | |
| 168 const char* url_data, | |
| 169 size_t url_len) { | |
| 170 // TODO(estade): might not want to ignore |url_data| | |
| 171 char* data = new char[markup_len]; | |
| 172 memcpy(data, markup_data, markup_len); | |
| 173 | |
| 174 InsertMapping(kMimeHtml, data, markup_len); | |
| 175 } | |
| 176 | |
| 177 // Write an extra flavor that signifies WebKit was the last to modify the | |
| 178 // pasteboard. This flavor has no data. | |
| 179 void Clipboard::WriteWebSmartPaste() { | |
| 180 InsertMapping(kMimeWebkitSmartPaste, NULL, 0); | |
| 181 } | |
| 182 | |
| 183 void Clipboard::WriteBitmap(const char* pixel_data, const char* size_data) { | |
| 184 const gfx::Size* size = reinterpret_cast<const gfx::Size*>(size_data); | |
| 185 | |
| 186 guchar* data = base::BGRAToRGBA(reinterpret_cast<const uint8_t*>(pixel_data), | |
| 187 size->width(), size->height(), 0); | |
| 188 | |
| 189 GdkPixbuf* pixbuf = | |
| 190 gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, TRUE, | |
| 191 8, size->width(), size->height(), | |
| 192 size->width() * 4, GdkPixbufFree, NULL); | |
| 193 // We store the GdkPixbuf*, and the size_t half of the pair is meaningless. | |
| 194 // Note that this contrasts with the vast majority of entries in our target | |
| 195 // map, which directly store the data and its length. | |
| 196 InsertMapping(kMimeBmp, reinterpret_cast<char*>(pixbuf), 0); | |
| 197 } | |
| 198 | |
| 199 void Clipboard::WriteBookmark(const char* title_data, size_t title_len, | |
| 200 const char* url_data, size_t url_len) { | |
| 201 // Write as plain text. | |
| 202 WriteText(url_data, url_len); | |
| 203 | |
| 204 // Write as a URI. | |
| 205 char* data = new char[url_len + 1]; | |
| 206 memcpy(data, url_data, url_len); | |
| 207 data[url_len] = NULL; | |
| 208 InsertMapping(kMimeURI, data, url_len + 1); | |
| 209 } | |
| 210 | |
| 211 void Clipboard::WriteFiles(const char* file_data, size_t file_len) { | |
| 212 NOTIMPLEMENTED(); | |
| 213 } | |
| 214 | |
| 215 void Clipboard::WriteData(const char* format_name, size_t format_len, | |
| 216 const char* data_data, size_t data_len) { | |
| 217 char* data = new char[data_len]; | |
| 218 memcpy(data, data_data, data_len); | |
| 219 std::string format(format_name, format_len); | |
| 220 InsertMapping(format.c_str(), data, data_len); | |
| 221 } | |
| 222 | |
| 223 // We do not use gtk_clipboard_wait_is_target_available because of | |
| 224 // a bug with the gtk clipboard. It caches the available targets | |
| 225 // and does not always refresh the cache when it is appropriate. | |
| 226 bool Clipboard::IsFormatAvailable(const Clipboard::FormatType& format, | |
| 227 Clipboard::Buffer buffer) const { | |
| 228 GtkClipboard* clipboard = LookupBackingClipboard(buffer); | |
| 229 if (clipboard == NULL) | |
| 230 return false; | |
| 231 | |
| 232 bool format_is_plain_text = GetPlainTextFormatType() == format; | |
| 233 if (format_is_plain_text) { | |
| 234 // This tries a number of common text targets. | |
| 235 if (gtk_clipboard_wait_is_text_available(clipboard)) | |
| 236 return true; | |
| 237 } | |
| 238 | |
| 239 bool retval = false; | |
| 240 GdkAtom* targets = NULL; | |
| 241 GtkSelectionData* data = | |
| 242 gtk_clipboard_wait_for_contents(clipboard, | |
| 243 gdk_atom_intern("TARGETS", false)); | |
| 244 | |
| 245 if (!data) | |
| 246 return false; | |
| 247 | |
| 248 int num = 0; | |
| 249 gtk_selection_data_get_targets(data, &targets, &num); | |
| 250 | |
| 251 // Some programs post data to the clipboard without any targets. If this is | |
| 252 // the case we attempt to make sense of the contents as text. This is pretty | |
| 253 // unfortunate since it means we have to actually copy the data to see if it | |
| 254 // is available, but at least this path shouldn't be hit for conforming | |
| 255 // programs. | |
| 256 if (num <= 0) { | |
| 257 if (format_is_plain_text) { | |
| 258 gchar* text = gtk_clipboard_wait_for_text(clipboard); | |
| 259 if (text) { | |
| 260 g_free(text); | |
| 261 retval = true; | |
| 262 } | |
| 263 } | |
| 264 } | |
| 265 | |
| 266 GdkAtom format_atom = StringToGdkAtom(format); | |
| 267 | |
| 268 for (int i = 0; i < num; i++) { | |
| 269 if (targets[i] == format_atom) { | |
| 270 retval = true; | |
| 271 break; | |
| 272 } | |
| 273 } | |
| 274 | |
| 275 g_free(targets); | |
| 276 gtk_selection_data_free(data); | |
| 277 | |
| 278 return retval; | |
| 279 } | |
| 280 | |
| 281 bool Clipboard::IsFormatAvailableByString(const std::string& format, | |
| 282 Clipboard::Buffer buffer) const { | |
| 283 return IsFormatAvailable(format, buffer); | |
| 284 } | |
| 285 | |
| 286 void Clipboard::ReadText(Clipboard::Buffer buffer, string16* result) const { | |
| 287 GtkClipboard* clipboard = LookupBackingClipboard(buffer); | |
| 288 if (clipboard == NULL) | |
| 289 return; | |
| 290 | |
| 291 result->clear(); | |
| 292 gchar* text = gtk_clipboard_wait_for_text(clipboard); | |
| 293 | |
| 294 if (text == NULL) | |
| 295 return; | |
| 296 | |
| 297 // TODO(estade): do we want to handle the possible error here? | |
| 298 UTF8ToUTF16(text, strlen(text), result); | |
| 299 g_free(text); | |
| 300 } | |
| 301 | |
| 302 void Clipboard::ReadAsciiText(Clipboard::Buffer buffer, | |
| 303 std::string* result) const { | |
| 304 GtkClipboard* clipboard = LookupBackingClipboard(buffer); | |
| 305 if (clipboard == NULL) | |
| 306 return; | |
| 307 | |
| 308 result->clear(); | |
| 309 gchar* text = gtk_clipboard_wait_for_text(clipboard); | |
| 310 | |
| 311 if (text == NULL) | |
| 312 return; | |
| 313 | |
| 314 result->assign(text); | |
| 315 g_free(text); | |
| 316 } | |
| 317 | |
| 318 void Clipboard::ReadFile(FilePath* file) const { | |
| 319 *file = FilePath(); | |
| 320 } | |
| 321 | |
| 322 // TODO(estade): handle different charsets. | |
| 323 // TODO(port): set *src_url. | |
| 324 void Clipboard::ReadHTML(Clipboard::Buffer buffer, string16* markup, | |
| 325 std::string* src_url) const { | |
| 326 GtkClipboard* clipboard = LookupBackingClipboard(buffer); | |
| 327 if (clipboard == NULL) | |
| 328 return; | |
| 329 markup->clear(); | |
| 330 | |
| 331 GtkSelectionData* data = gtk_clipboard_wait_for_contents(clipboard, | |
| 332 StringToGdkAtom(GetHtmlFormatType())); | |
| 333 | |
| 334 if (!data) | |
| 335 return; | |
| 336 | |
| 337 UTF8ToUTF16(reinterpret_cast<char*>(data->data), data->length, markup); | |
| 338 gtk_selection_data_free(data); | |
| 339 } | |
| 340 | |
| 341 void Clipboard::ReadBookmark(string16* title, std::string* url) const { | |
| 342 // TODO(estade): implement this. | |
| 343 } | |
| 344 | |
| 345 void Clipboard::ReadData(const std::string& format, std::string* result) { | |
| 346 GtkSelectionData* data = | |
| 347 gtk_clipboard_wait_for_contents(clipboard_, StringToGdkAtom(format)); | |
| 348 if (!data) | |
| 349 return; | |
| 350 result->assign(reinterpret_cast<char*>(data->data), data->length); | |
| 351 gtk_selection_data_free(data); | |
| 352 } | |
| 353 | |
| 354 // static | |
| 355 Clipboard::FormatType Clipboard::GetPlainTextFormatType() { | |
| 356 return GdkAtomToString(GDK_TARGET_STRING); | |
| 357 } | |
| 358 | |
| 359 // static | |
| 360 Clipboard::FormatType Clipboard::GetPlainTextWFormatType() { | |
| 361 return GetPlainTextFormatType(); | |
| 362 } | |
| 363 | |
| 364 // static | |
| 365 Clipboard::FormatType Clipboard::GetHtmlFormatType() { | |
| 366 return std::string(kMimeHtml); | |
| 367 } | |
| 368 | |
| 369 // static | |
| 370 Clipboard::FormatType Clipboard::GetWebKitSmartPasteFormatType() { | |
| 371 return std::string(kMimeWebkitSmartPaste); | |
| 372 } | |
| 373 | |
| 374 // Insert the key/value pair in the clipboard_data structure. If | |
| 375 // the mapping already exists, it frees the associated data. Don't worry | |
| 376 // about double freeing because if the same key is inserted into the | |
| 377 // map twice, it must have come from different Write* functions and the | |
| 378 // data pointer cannot be the same. | |
| 379 void Clipboard::InsertMapping(const char* key, | |
| 380 char* data, | |
| 381 size_t data_len) { | |
| 382 TargetMap::iterator iter = clipboard_data_->find(key); | |
| 383 | |
| 384 if (iter != clipboard_data_->end()) { | |
| 385 if (strcmp(kMimeBmp, key) == 0) | |
| 386 g_object_unref(reinterpret_cast<GdkPixbuf*>(iter->second.first)); | |
| 387 else | |
| 388 delete[] iter->second.first; | |
| 389 } | |
| 390 | |
| 391 (*clipboard_data_)[key] = std::make_pair(data, data_len); | |
| 392 } | |
| 393 | |
| 394 GtkClipboard* Clipboard::LookupBackingClipboard(Buffer clipboard) const { | |
| 395 GtkClipboard* result; | |
| 396 | |
| 397 switch (clipboard) { | |
| 398 case BUFFER_STANDARD: | |
| 399 result = clipboard_; | |
| 400 break; | |
| 401 case BUFFER_SELECTION: | |
| 402 result = primary_selection_; | |
| 403 break; | |
| 404 default: | |
| 405 NOTREACHED(); | |
| 406 result = NULL; | |
| 407 break; | |
| 408 } | |
| 409 return result; | |
| 410 } | |
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Chromium Code Reviews
Issue 260003:
Move the clipboard stuff out of base and into app/clipboard. I renamed... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/