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| 1 // Copyright (c) 2012 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 "content/browser/web_contents/web_drag_source_gtk.h" | |
| 6 | |
| 7 #include <string> | |
| 8 | |
| 9 #include "base/files/file.h" | |
| 10 #include "base/nix/mime_util_xdg.h" | |
| 11 #include "base/strings/utf_string_conversions.h" | |
| 12 #include "base/threading/thread_restrictions.h" | |
| 13 #include "content/browser/download/drag_download_file.h" | |
| 14 #include "content/browser/download/drag_download_util.h" | |
| 15 #include "content/browser/renderer_host/render_view_host_delegate.h" | |
| 16 #include "content/browser/renderer_host/render_view_host_impl.h" | |
| 17 #include "content/browser/web_contents/drag_utils_gtk.h" | |
| 18 #include "content/browser/web_contents/web_contents_impl.h" | |
| 19 #include "content/public/browser/content_browser_client.h" | |
| 20 #include "content/public/browser/web_contents_view.h" | |
| 21 #include "content/public/common/content_client.h" | |
| 22 #include "content/public/common/drop_data.h" | |
| 23 #include "net/base/filename_util.h" | |
| 24 #include "third_party/skia/include/core/SkBitmap.h" | |
| 25 #include "ui/base/clipboard/custom_data_helper.h" | |
| 26 #include "ui/base/dragdrop/gtk_dnd_util.h" | |
| 27 #include "ui/base/gtk/gtk_screen_util.h" | |
| 28 #include "ui/gfx/gtk_compat.h" | |
| 29 #include "ui/gfx/gtk_util.h" | |
| 30 | |
| 31 using blink::WebDragOperation; | |
| 32 using blink::WebDragOperationsMask; | |
| 33 using blink::WebDragOperationNone; | |
| 34 | |
| 35 namespace content { | |
| 36 | |
| 37 WebDragSourceGtk::WebDragSourceGtk(WebContents* web_contents) | |
| 38 : web_contents_(static_cast<WebContentsImpl*>(web_contents)), | |
| 39 drag_pixbuf_(NULL), | |
| 40 drag_failed_(false), | |
| 41 drag_widget_(gtk_invisible_new()), | |
| 42 drag_context_(NULL), | |
| 43 drag_icon_(gtk_window_new(GTK_WINDOW_POPUP)) { | |
| 44 signals_.Connect(drag_widget_, "drag-failed", | |
| 45 G_CALLBACK(OnDragFailedThunk), this); | |
| 46 signals_.Connect(drag_widget_, "drag-begin", | |
| 47 G_CALLBACK(OnDragBeginThunk), | |
| 48 this); | |
| 49 signals_.Connect(drag_widget_, "drag-end", | |
| 50 G_CALLBACK(OnDragEndThunk), this); | |
| 51 signals_.Connect(drag_widget_, "drag-data-get", | |
| 52 G_CALLBACK(OnDragDataGetThunk), this); | |
| 53 | |
| 54 signals_.Connect(drag_icon_, "expose-event", | |
| 55 G_CALLBACK(OnDragIconExposeThunk), this); | |
| 56 } | |
| 57 | |
| 58 WebDragSourceGtk::~WebDragSourceGtk() { | |
| 59 // Break the current drag, if any. | |
| 60 if (drop_data_) { | |
| 61 gtk_grab_add(drag_widget_); | |
| 62 gtk_grab_remove(drag_widget_); | |
| 63 drop_data_.reset(); | |
| 64 } | |
| 65 | |
| 66 gtk_widget_destroy(drag_widget_); | |
| 67 gtk_widget_destroy(drag_icon_); | |
| 68 } | |
| 69 | |
| 70 bool WebDragSourceGtk::StartDragging(const DropData& drop_data, | |
| 71 WebDragOperationsMask allowed_ops, | |
| 72 GdkEventButton* last_mouse_down, | |
| 73 const SkBitmap& image, | |
| 74 const gfx::Vector2d& image_offset) { | |
| 75 // Guard against re-starting before previous drag completed. | |
| 76 if (drag_context_) { | |
| 77 NOTREACHED(); | |
| 78 return false; | |
| 79 } | |
| 80 | |
| 81 int targets_mask = ui::RENDERER_TAINT; | |
| 82 | |
| 83 if (!drop_data.text.string().empty()) | |
| 84 targets_mask |= ui::TEXT_PLAIN; | |
| 85 if (drop_data.url.is_valid()) { | |
| 86 targets_mask |= ui::TEXT_URI_LIST; | |
| 87 targets_mask |= ui::CHROME_NAMED_URL; | |
| 88 targets_mask |= ui::NETSCAPE_URL; | |
| 89 } | |
| 90 if (!drop_data.html.string().empty()) | |
| 91 targets_mask |= ui::TEXT_HTML; | |
| 92 if (!drop_data.file_contents.empty()) | |
| 93 targets_mask |= ui::CHROME_WEBDROP_FILE_CONTENTS; | |
| 94 if (!drop_data.download_metadata.empty() && | |
| 95 ParseDownloadMetadata(drop_data.download_metadata, | |
| 96 &wide_download_mime_type_, | |
| 97 &download_file_name_, | |
| 98 &download_url_)) { | |
| 99 targets_mask |= ui::DIRECT_SAVE_FILE; | |
| 100 } | |
| 101 if (!drop_data.custom_data.empty()) | |
| 102 targets_mask |= ui::CUSTOM_DATA; | |
| 103 | |
| 104 // NOTE: Begin a drag even if no targets present. Otherwise, things like | |
| 105 // draggable list elements will not work. | |
| 106 | |
| 107 drop_data_.reset(new DropData(drop_data)); | |
| 108 | |
| 109 // The image we get from WebKit makes heavy use of alpha-shading. This looks | |
| 110 // bad on non-compositing WMs. Fall back to the default drag icon. | |
| 111 if (!image.isNull() && ui::IsScreenComposited()) | |
| 112 drag_pixbuf_ = gfx::GdkPixbufFromSkBitmap(image); | |
| 113 image_offset_ = image_offset; | |
| 114 | |
| 115 GtkTargetList* list = ui::GetTargetListFromCodeMask(targets_mask); | |
| 116 if (targets_mask & ui::CHROME_WEBDROP_FILE_CONTENTS) { | |
| 117 // Looking up the mime type can hit the disk. http://crbug.com/84896 | |
| 118 base::ThreadRestrictions::ScopedAllowIO allow_io; | |
| 119 drag_file_mime_type_ = gdk_atom_intern( | |
| 120 base::nix::GetDataMimeType(drop_data.file_contents).c_str(), FALSE); | |
| 121 gtk_target_list_add(list, drag_file_mime_type_, | |
| 122 0, ui::CHROME_WEBDROP_FILE_CONTENTS); | |
| 123 } | |
| 124 | |
| 125 drag_failed_ = false; | |
| 126 // If we don't pass an event, GDK won't know what event time to start grabbing | |
| 127 // mouse events. Technically it's the mouse motion event and not the mouse | |
| 128 // down event that causes the drag, but there's no reliable way to know | |
| 129 // *which* motion event initiated the drag, so this will have to do. | |
| 130 // TODO(estade): This can sometimes be very far off, e.g. if the user clicks | |
| 131 // and holds and doesn't start dragging for a long time. I doubt it matters | |
| 132 // much, but we should probably look into the possibility of getting the | |
| 133 // initiating event from webkit. | |
| 134 drag_context_ = gtk_drag_begin(drag_widget_, list, | |
| 135 WebDragOpToGdkDragAction(allowed_ops), | |
| 136 1, // Drags are always initiated by the left button. | |
| 137 reinterpret_cast<GdkEvent*>(last_mouse_down)); | |
| 138 // The drag adds a ref; let it own the list. | |
| 139 gtk_target_list_unref(list); | |
| 140 | |
| 141 // Sometimes the drag fails to start; |context| will be NULL and we won't | |
| 142 // get a drag-end signal. | |
| 143 if (!drag_context_) { | |
| 144 drag_failed_ = true; | |
| 145 drop_data_.reset(); | |
| 146 return false; | |
| 147 } | |
| 148 | |
| 149 return true; | |
| 150 } | |
| 151 | |
| 152 void WebDragSourceGtk::OnDragDataGet(GtkWidget* sender, | |
| 153 GdkDragContext* context, | |
| 154 GtkSelectionData* selection_data, | |
| 155 guint target_type, | |
| 156 guint time) { | |
| 157 const int kBitsPerByte = 8; | |
| 158 | |
| 159 switch (target_type) { | |
| 160 case ui::TEXT_PLAIN: { | |
| 161 std::string utf8_text = base::UTF16ToUTF8(drop_data_->text.string()); | |
| 162 gtk_selection_data_set_text(selection_data, utf8_text.c_str(), | |
| 163 utf8_text.length()); | |
| 164 break; | |
| 165 } | |
| 166 | |
| 167 case ui::TEXT_HTML: { | |
| 168 // TODO(estade): change relative links to be absolute using | |
| 169 // |html_base_url|. | |
| 170 std::string utf8_text = base::UTF16ToUTF8(drop_data_->html.string()); | |
| 171 gtk_selection_data_set(selection_data, | |
| 172 ui::GetAtomForTarget(ui::TEXT_HTML), | |
| 173 kBitsPerByte, | |
| 174 reinterpret_cast<const guchar*>(utf8_text.c_str()), | |
| 175 utf8_text.length()); | |
| 176 break; | |
| 177 } | |
| 178 | |
| 179 case ui::TEXT_URI_LIST: | |
| 180 case ui::CHROME_NAMED_URL: | |
| 181 case ui::NETSCAPE_URL: { | |
| 182 ui::WriteURLWithName(selection_data, drop_data_->url, | |
| 183 drop_data_->url_title, target_type); | |
| 184 break; | |
| 185 } | |
| 186 | |
| 187 case ui::CHROME_WEBDROP_FILE_CONTENTS: { | |
| 188 gtk_selection_data_set( | |
| 189 selection_data, | |
| 190 drag_file_mime_type_, kBitsPerByte, | |
| 191 reinterpret_cast<const guchar*>(drop_data_->file_contents.data()), | |
| 192 drop_data_->file_contents.length()); | |
| 193 break; | |
| 194 } | |
| 195 | |
| 196 case ui::DIRECT_SAVE_FILE: { | |
| 197 char status_code = 'E'; | |
| 198 | |
| 199 // Retrieves the full file path (in file URL format) provided by the | |
| 200 // drop target by reading from the source window's XdndDirectSave0 | |
| 201 // property. | |
| 202 gint file_url_len = 0; | |
| 203 guchar* file_url_value = NULL; | |
| 204 if (gdk_property_get(context->source_window, | |
| 205 ui::GetAtomForTarget(ui::DIRECT_SAVE_FILE), | |
| 206 ui::GetAtomForTarget(ui::TEXT_PLAIN_NO_CHARSET), | |
| 207 0, | |
| 208 1024, | |
| 209 FALSE, | |
| 210 NULL, | |
| 211 NULL, | |
| 212 &file_url_len, | |
| 213 &file_url_value) && | |
| 214 file_url_value) { | |
| 215 // Convert from the file url to the file path. | |
| 216 GURL file_url(std::string(reinterpret_cast<char*>(file_url_value), | |
| 217 file_url_len)); | |
| 218 g_free(file_url_value); | |
| 219 base::FilePath file_path; | |
| 220 if (net::FileURLToFilePath(file_url, &file_path)) { | |
| 221 // Open the file. | |
| 222 base::File file(CreateFileForDrop(&file_path)); | |
| 223 if (file.IsValid()) { | |
| 224 // Start downloading the file to the stream. | |
| 225 scoped_refptr<DragDownloadFile> drag_file_downloader = | |
| 226 new DragDownloadFile( | |
| 227 file_path, | |
| 228 file.Pass(), | |
| 229 download_url_, | |
| 230 Referrer(web_contents_->GetURL(), | |
| 231 drop_data_->referrer_policy), | |
| 232 web_contents_->GetEncoding(), | |
| 233 web_contents_); | |
| 234 drag_file_downloader->Start( | |
| 235 new PromiseFileFinalizer(drag_file_downloader.get())); | |
| 236 | |
| 237 // Set the status code to success. | |
| 238 status_code = 'S'; | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 // Return the status code to the file manager. | |
| 243 gtk_selection_data_set(selection_data, | |
| 244 gtk_selection_data_get_target(selection_data), | |
| 245 kBitsPerByte, | |
| 246 reinterpret_cast<guchar*>(&status_code), | |
| 247 1); | |
| 248 } | |
| 249 break; | |
| 250 } | |
| 251 | |
| 252 case ui::CUSTOM_DATA: { | |
| 253 Pickle custom_data; | |
| 254 ui::WriteCustomDataToPickle(drop_data_->custom_data, &custom_data); | |
| 255 gtk_selection_data_set( | |
| 256 selection_data, | |
| 257 ui::GetAtomForTarget(ui::CUSTOM_DATA), | |
| 258 kBitsPerByte, | |
| 259 reinterpret_cast<const guchar*>(custom_data.data()), | |
| 260 custom_data.size()); | |
| 261 break; | |
| 262 } | |
| 263 | |
| 264 case ui::RENDERER_TAINT: { | |
| 265 static const char kPlaceholder[] = "x"; | |
| 266 gtk_selection_data_set( | |
| 267 selection_data, | |
| 268 ui::GetAtomForTarget(ui::RENDERER_TAINT), | |
| 269 kBitsPerByte, | |
| 270 reinterpret_cast<const guchar*>(kPlaceholder), | |
| 271 strlen(kPlaceholder)); | |
| 272 break; | |
| 273 } | |
| 274 | |
| 275 default: | |
| 276 NOTREACHED(); | |
| 277 } | |
| 278 } | |
| 279 | |
| 280 gboolean WebDragSourceGtk::OnDragFailed(GtkWidget* sender, | |
| 281 GdkDragContext* context, | |
| 282 GtkDragResult result) { | |
| 283 drag_failed_ = true; | |
| 284 | |
| 285 gfx::Point root = ui::ScreenPoint(GetContentNativeView()); | |
| 286 gfx::Point client = ui::ClientPoint(GetContentNativeView()); | |
| 287 | |
| 288 if (web_contents_) { | |
| 289 web_contents_->DragSourceEndedAt( | |
| 290 client.x(), client.y(), root.x(), root.y(), | |
| 291 WebDragOperationNone); | |
| 292 } | |
| 293 | |
| 294 // Let the native failure animation run. | |
| 295 return FALSE; | |
| 296 } | |
| 297 | |
| 298 void WebDragSourceGtk::OnDragBegin(GtkWidget* sender, | |
| 299 GdkDragContext* drag_context) { | |
| 300 if (!download_url_.is_empty()) { | |
| 301 // Generate the file name based on both mime type and proposed file name. | |
| 302 std::string default_name = | |
| 303 GetContentClient()->browser()->GetDefaultDownloadName(); | |
| 304 base::FilePath generated_download_file_name = | |
| 305 net::GenerateFileName(download_url_, | |
| 306 std::string(), | |
| 307 std::string(), | |
| 308 download_file_name_.value(), | |
| 309 base::UTF16ToUTF8(wide_download_mime_type_), | |
| 310 default_name); | |
| 311 | |
| 312 // Pass the file name to the drop target by setting the source window's | |
| 313 // XdndDirectSave0 property. | |
| 314 gdk_property_change(drag_context->source_window, | |
| 315 ui::GetAtomForTarget(ui::DIRECT_SAVE_FILE), | |
| 316 ui::GetAtomForTarget(ui::TEXT_PLAIN_NO_CHARSET), | |
| 317 8, | |
| 318 GDK_PROP_MODE_REPLACE, | |
| 319 reinterpret_cast<const guchar*>( | |
| 320 generated_download_file_name.value().c_str()), | |
| 321 generated_download_file_name.value().length()); | |
| 322 } | |
| 323 | |
| 324 if (drag_pixbuf_) { | |
| 325 gtk_widget_set_size_request(drag_icon_, | |
| 326 gdk_pixbuf_get_width(drag_pixbuf_), | |
| 327 gdk_pixbuf_get_height(drag_pixbuf_)); | |
| 328 | |
| 329 // We only need to do this once. | |
| 330 if (!gtk_widget_get_realized(drag_icon_)) { | |
| 331 GdkScreen* screen = gtk_widget_get_screen(drag_icon_); | |
| 332 GdkColormap* rgba = gdk_screen_get_rgba_colormap(screen); | |
| 333 if (rgba) | |
| 334 gtk_widget_set_colormap(drag_icon_, rgba); | |
| 335 } | |
| 336 | |
| 337 gtk_drag_set_icon_widget(drag_context, drag_icon_, | |
| 338 image_offset_.x(), image_offset_.y()); | |
| 339 } | |
| 340 } | |
| 341 | |
| 342 void WebDragSourceGtk::OnDragEnd(GtkWidget* sender, | |
| 343 GdkDragContext* drag_context) { | |
| 344 if (drag_pixbuf_) { | |
| 345 g_object_unref(drag_pixbuf_); | |
| 346 drag_pixbuf_ = NULL; | |
| 347 } | |
| 348 | |
| 349 if (!download_url_.is_empty()) { | |
| 350 gdk_property_delete(drag_context->source_window, | |
| 351 ui::GetAtomForTarget(ui::DIRECT_SAVE_FILE)); | |
| 352 } | |
| 353 | |
| 354 if (!drag_failed_) { | |
| 355 gfx::Point root = ui::ScreenPoint(GetContentNativeView()); | |
| 356 gfx::Point client = ui::ClientPoint(GetContentNativeView()); | |
| 357 | |
| 358 if (web_contents_) { | |
| 359 web_contents_->DragSourceEndedAt( | |
| 360 client.x(), client.y(), root.x(), root.y(), | |
| 361 GdkDragActionToWebDragOp(drag_context->action)); | |
| 362 } | |
| 363 } | |
| 364 | |
| 365 web_contents_->SystemDragEnded(); | |
| 366 | |
| 367 drop_data_.reset(); | |
| 368 drag_context_ = NULL; | |
| 369 } | |
| 370 | |
| 371 gfx::NativeView WebDragSourceGtk::GetContentNativeView() const { | |
| 372 return web_contents_->GetView()->GetContentNativeView(); | |
| 373 } | |
| 374 | |
| 375 gboolean WebDragSourceGtk::OnDragIconExpose(GtkWidget* sender, | |
| 376 GdkEventExpose* event) { | |
| 377 cairo_t* cr = gdk_cairo_create(event->window); | |
| 378 gdk_cairo_rectangle(cr, &event->area); | |
| 379 cairo_clip(cr); | |
| 380 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); | |
| 381 gdk_cairo_set_source_pixbuf(cr, drag_pixbuf_, 0, 0); | |
| 382 cairo_paint(cr); | |
| 383 cairo_destroy(cr); | |
| 384 | |
| 385 return TRUE; | |
| 386 } | |
| 387 | |
| 388 } // namespace content | |
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Chromium Code Reviews
Issue 231733005:
Delete the GTK+ port of Chrome. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src