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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 "chrome/browser/tab_contents/tab_contents_view_win.h" | |
| 6 | |
| 7 #include <windows.h> | |
| 8 | |
| 9 #include "app/gfx/canvas.h" | |
| 10 #include "app/os_exchange_data.h" | |
| 11 #include "chrome/browser/bookmarks/bookmark_drag_data.h" | |
| 12 #include "chrome/browser/browser.h" // TODO(beng): this dependency is awful. | |
| 13 #include "chrome/browser/browser_process.h" | |
| 14 #include "chrome/browser/download/download_request_manager.h" | |
| 15 #include "chrome/browser/renderer_host/render_process_host.h" | |
| 16 #include "chrome/browser/renderer_host/render_view_host.h" | |
| 17 #include "chrome/browser/renderer_host/render_view_host_factory.h" | |
| 18 #include "chrome/browser/renderer_host/render_widget_host_view_win.h" | |
| 19 #include "chrome/browser/tab_contents/render_view_context_menu_win.h" | |
| 20 #include "chrome/browser/tab_contents/interstitial_page.h" | |
| 21 #include "chrome/browser/tab_contents/tab_contents.h" | |
| 22 #include "chrome/browser/tab_contents/tab_contents_delegate.h" | |
| 23 #include "chrome/browser/tab_contents/web_drag_source.h" | |
| 24 #include "chrome/browser/tab_contents/web_drop_target.h" | |
| 25 #include "chrome/browser/views/sad_tab_view.h" | |
| 26 #include "chrome/common/url_constants.h" | |
| 27 #include "net/base/net_util.h" | |
| 28 #include "views/focus/view_storage.h" | |
| 29 #include "views/widget/root_view.h" | |
| 30 #include "webkit/glue/plugins/webplugin_delegate_impl.h" | |
| 31 #include "webkit/glue/webdropdata.h" | |
| 32 | |
| 33 using WebKit::WebInputEvent; | |
| 34 | |
| 35 namespace { | |
| 36 | |
| 37 // Windows callback for OnDestroy to detach the plugin windows. | |
| 38 BOOL CALLBACK DetachPluginWindowsCallback(HWND window, LPARAM param) { | |
| 39 if (WebPluginDelegateImpl::IsPluginDelegateWindow(window) && | |
| 40 !IsHungAppWindow(window)) { | |
| 41 ::ShowWindow(window, SW_HIDE); | |
| 42 SetParent(window, NULL); | |
| 43 } | |
| 44 return TRUE; | |
| 45 } | |
| 46 | |
| 47 } // namespace | |
| 48 | |
| 49 // static | |
| 50 TabContentsView* TabContentsView::Create(TabContents* tab_contents) { | |
| 51 return new TabContentsViewWin(tab_contents); | |
| 52 } | |
| 53 | |
| 54 TabContentsViewWin::TabContentsViewWin(TabContents* tab_contents) | |
| 55 : TabContentsView(tab_contents), | |
| 56 ignore_next_char_event_(false) { | |
| 57 last_focused_view_storage_id_ = | |
| 58 views::ViewStorage::GetSharedInstance()->CreateStorageID(); | |
| 59 } | |
| 60 | |
| 61 TabContentsViewWin::~TabContentsViewWin() { | |
| 62 // Makes sure to remove any stored view we may still have in the ViewStorage. | |
| 63 // | |
| 64 // It is possible the view went away before us, so we only do this if the | |
| 65 // view is registered. | |
| 66 views::ViewStorage* view_storage = views::ViewStorage::GetSharedInstance(); | |
| 67 if (view_storage->RetrieveView(last_focused_view_storage_id_) != NULL) | |
| 68 view_storage->RemoveView(last_focused_view_storage_id_); | |
| 69 } | |
| 70 | |
| 71 void TabContentsViewWin::CreateView() { | |
| 72 set_delete_on_destroy(false); | |
| 73 // Since we create these windows parented to the desktop window initially, we | |
| 74 // don't want to create them initially visible. | |
| 75 set_window_style(WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS); | |
| 76 WidgetWin::Init(GetDesktopWindow(), gfx::Rect(), false); | |
| 77 | |
| 78 // Remove the root view drop target so we can register our own. | |
| 79 RevokeDragDrop(GetNativeView()); | |
| 80 drop_target_ = new WebDropTarget(GetNativeView(), tab_contents()); | |
| 81 } | |
| 82 | |
| 83 RenderWidgetHostView* TabContentsViewWin::CreateViewForWidget( | |
| 84 RenderWidgetHost* render_widget_host) { | |
| 85 if (render_widget_host->view()) { | |
| 86 // During testing, the view will already be set up in most cases to the | |
| 87 // test view, so we don't want to clobber it with a real one. To verify that | |
| 88 // this actually is happening (and somebody isn't accidentally creating the | |
| 89 // view twice), we check for the RVH Factory, which will be set when we're | |
| 90 // making special ones (which go along with the special views). | |
| 91 DCHECK(RenderViewHostFactory::has_factory()); | |
| 92 return render_widget_host->view(); | |
| 93 } | |
| 94 | |
| 95 RenderWidgetHostViewWin* view = | |
| 96 new RenderWidgetHostViewWin(render_widget_host); | |
| 97 view->Create(GetNativeView()); | |
| 98 view->ShowWindow(SW_SHOW); | |
| 99 return view; | |
| 100 } | |
| 101 | |
| 102 gfx::NativeView TabContentsViewWin::GetNativeView() const { | |
| 103 return WidgetWin::GetNativeView(); | |
| 104 } | |
| 105 | |
| 106 gfx::NativeView TabContentsViewWin::GetContentNativeView() const { | |
| 107 if (!tab_contents()->render_widget_host_view()) | |
| 108 return NULL; | |
| 109 return tab_contents()->render_widget_host_view()->GetNativeView(); | |
| 110 } | |
| 111 | |
| 112 gfx::NativeWindow TabContentsViewWin::GetTopLevelNativeWindow() const { | |
| 113 return ::GetAncestor(GetNativeView(), GA_ROOT); | |
| 114 } | |
| 115 | |
| 116 void TabContentsViewWin::GetContainerBounds(gfx::Rect* out) const { | |
| 117 GetBounds(out, false); | |
| 118 } | |
| 119 | |
| 120 void TabContentsViewWin::StartDragging(const WebDropData& drop_data) { | |
| 121 scoped_refptr<OSExchangeData> data(new OSExchangeData); | |
| 122 | |
| 123 // TODO(tc): Generate an appropriate drag image. | |
| 124 | |
| 125 // We set the file contents before the URL because the URL also sets file | |
| 126 // contents (to a .URL shortcut). We want to prefer file content data over a | |
| 127 // shortcut so we add it first. | |
| 128 if (!drop_data.file_contents.empty()) { | |
| 129 // Images without ALT text will only have a file extension so we need to | |
| 130 // synthesize one from the provided extension and URL. | |
| 131 FilePath file_name(drop_data.file_description_filename); | |
| 132 file_name = file_name.BaseName().RemoveExtension(); | |
| 133 if (file_name.value().empty()) { | |
| 134 // Retrieve the name from the URL. | |
| 135 file_name = FilePath::FromWStringHack( | |
| 136 net::GetSuggestedFilename(drop_data.url, "", "", L"")); | |
| 137 } | |
| 138 file_name = file_name.ReplaceExtension(drop_data.file_extension); | |
| 139 data->SetFileContents(file_name.value(), drop_data.file_contents); | |
| 140 } | |
| 141 if (!drop_data.text_html.empty()) | |
| 142 data->SetHtml(drop_data.text_html, drop_data.html_base_url); | |
| 143 if (drop_data.url.is_valid()) { | |
| 144 if (drop_data.url.SchemeIs(chrome::kJavaScriptScheme)) { | |
| 145 // We don't want to allow javascript URLs to be dragged to the desktop, | |
| 146 // but we do want to allow them to be added to the bookmarks bar | |
| 147 // (bookmarklets). So we create a fake bookmark entry (BookmarkDragData | |
| 148 // object) which explorer.exe cannot handle, and write the entry to data. | |
| 149 BookmarkDragData::Element bm_elt; | |
| 150 bm_elt.is_url = true; | |
| 151 bm_elt.url = drop_data.url; | |
| 152 bm_elt.title = drop_data.url_title; | |
| 153 | |
| 154 BookmarkDragData bm_drag_data; | |
| 155 bm_drag_data.elements.push_back(bm_elt); | |
| 156 | |
| 157 // Pass in NULL as the profile so that the bookmark always adds the url | |
| 158 // rather than trying to move an existing url. | |
| 159 bm_drag_data.Write(NULL, data); | |
| 160 } else { | |
| 161 data->SetURL(drop_data.url, drop_data.url_title); | |
| 162 } | |
| 163 } | |
| 164 if (!drop_data.plain_text.empty()) | |
| 165 data->SetString(drop_data.plain_text); | |
| 166 | |
| 167 scoped_refptr<WebDragSource> drag_source( | |
| 168 new WebDragSource(GetNativeView(), tab_contents()->render_view_host())); | |
| 169 | |
| 170 DWORD effects; | |
| 171 | |
| 172 // We need to enable recursive tasks on the message loop so we can get | |
| 173 // updates while in the system DoDragDrop loop. | |
| 174 bool old_state = MessageLoop::current()->NestableTasksAllowed(); | |
| 175 MessageLoop::current()->SetNestableTasksAllowed(true); | |
| 176 DoDragDrop(data, drag_source, DROPEFFECT_COPY | DROPEFFECT_LINK, &effects); | |
| 177 MessageLoop::current()->SetNestableTasksAllowed(old_state); | |
| 178 | |
| 179 if (tab_contents()->render_view_host()) | |
| 180 tab_contents()->render_view_host()->DragSourceSystemDragEnded(); | |
| 181 } | |
| 182 | |
| 183 void TabContentsViewWin::OnContentsDestroy() { | |
| 184 // TODO(brettw) this seems like maybe it can be moved into OnDestroy and this | |
| 185 // function can be deleted? If you're adding more here, consider whether it | |
| 186 // can be moved into OnDestroy which is a Windows message handler as the | |
| 187 // window is being torn down. | |
| 188 | |
| 189 // When a tab is closed all its child plugin windows are destroyed | |
| 190 // automatically. This happens before plugins get any notification that its | |
| 191 // instances are tearing down. | |
| 192 // | |
| 193 // Plugins like Quicktime assume that their windows will remain valid as long | |
| 194 // as they have plugin instances active. Quicktime crashes in this case | |
| 195 // because its windowing code cleans up an internal data structure that the | |
| 196 // handler for NPP_DestroyStream relies on. | |
| 197 // | |
| 198 // The fix is to detach plugin windows from web contents when it is going | |
| 199 // away. This will prevent the plugin windows from getting destroyed | |
| 200 // automatically. The detached plugin windows will get cleaned up in proper | |
| 201 // sequence as part of the usual cleanup when the plugin instance goes away. | |
| 202 EnumChildWindows(GetNativeView(), DetachPluginWindowsCallback, NULL); | |
| 203 } | |
| 204 | |
| 205 void TabContentsViewWin::OnDestroy() { | |
| 206 if (drop_target_.get()) { | |
| 207 RevokeDragDrop(GetNativeView()); | |
| 208 drop_target_ = NULL; | |
| 209 } | |
| 210 } | |
| 211 | |
| 212 void TabContentsViewWin::SetPageTitle(const std::wstring& title) { | |
| 213 if (GetNativeView()) { | |
| 214 // It's possible to get this after the hwnd has been destroyed. | |
| 215 ::SetWindowText(GetNativeView(), title.c_str()); | |
| 216 // TODO(brettw) this call seems messy the way it reaches into the widget | |
| 217 // view, and I'm not sure it's necessary. Maybe we should just remove it. | |
| 218 ::SetWindowText( | |
| 219 tab_contents()->render_widget_host_view()->GetNativeView(), | |
| 220 title.c_str()); | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 void TabContentsViewWin::OnTabCrashed() { | |
| 225 // Force an invalidation to render sad tab. We will notice we crashed when we | |
| 226 // paint. | |
| 227 // Note that it's possible to get this message after the window was destroyed. | |
| 228 if (::IsWindow(GetNativeView())) | |
| 229 InvalidateRect(GetNativeView(), NULL, FALSE); | |
| 230 } | |
| 231 | |
| 232 void TabContentsViewWin::SizeContents(const gfx::Size& size) { | |
| 233 // TODO(brettw) this is a hack and should be removed. See tab_contents_view.h. | |
| 234 WasSized(size); | |
| 235 } | |
| 236 | |
| 237 void TabContentsViewWin::Focus() { | |
| 238 HWND container_hwnd = GetNativeView(); | |
| 239 if (!container_hwnd) | |
| 240 return; | |
| 241 | |
| 242 views::FocusManager* focus_manager = | |
| 243 views::FocusManager::GetFocusManager(container_hwnd); | |
| 244 if (!focus_manager) | |
| 245 return; // During testing we have no focus manager. | |
| 246 views::View* v = focus_manager->GetViewForWindow(container_hwnd, true); | |
| 247 DCHECK(v); | |
| 248 if (v) | |
| 249 v->RequestFocus(); | |
| 250 } | |
| 251 | |
| 252 void TabContentsViewWin::SetInitialFocus() { | |
| 253 if (tab_contents()->FocusLocationBarByDefault()) | |
| 254 tab_contents()->delegate()->SetFocusToLocationBar(); | |
| 255 else | |
| 256 ::SetFocus(GetNativeView()); | |
| 257 } | |
| 258 | |
| 259 void TabContentsViewWin::StoreFocus() { | |
| 260 views::ViewStorage* view_storage = views::ViewStorage::GetSharedInstance(); | |
| 261 | |
| 262 if (view_storage->RetrieveView(last_focused_view_storage_id_) != NULL) | |
| 263 view_storage->RemoveView(last_focused_view_storage_id_); | |
| 264 | |
| 265 views::FocusManager* focus_manager = | |
| 266 views::FocusManager::GetFocusManager(GetNativeView()); | |
| 267 if (focus_manager) { | |
| 268 // |focus_manager| can be NULL if the tab has been detached but still | |
| 269 // exists. | |
| 270 views::View* focused_view = focus_manager->GetFocusedView(); | |
| 271 if (focused_view) | |
| 272 view_storage->StoreView(last_focused_view_storage_id_, focused_view); | |
| 273 | |
| 274 // If the focus was on the page, explicitly clear the focus so that we | |
| 275 // don't end up with the focused HWND not part of the window hierarchy. | |
| 276 // TODO(brettw) this should move to the view somehow. | |
| 277 HWND container_hwnd = GetNativeView(); | |
| 278 if (container_hwnd) { | |
| 279 views::View* focused_view = focus_manager->GetFocusedView(); | |
| 280 if (focused_view) { | |
| 281 HWND hwnd = focused_view->GetRootView()->GetWidget()->GetNativeView(); | |
| 282 if (container_hwnd == hwnd || ::IsChild(container_hwnd, hwnd)) | |
| 283 focus_manager->ClearFocus(); | |
| 284 } | |
| 285 } | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 void TabContentsViewWin::RestoreFocus() { | |
| 290 views::ViewStorage* view_storage = views::ViewStorage::GetSharedInstance(); | |
| 291 views::View* last_focused_view = | |
| 292 view_storage->RetrieveView(last_focused_view_storage_id_); | |
| 293 | |
| 294 if (!last_focused_view) { | |
| 295 SetInitialFocus(); | |
| 296 } else { | |
| 297 views::FocusManager* focus_manager = | |
| 298 views::FocusManager::GetFocusManager(GetNativeView()); | |
| 299 | |
| 300 // If you hit this DCHECK, please report it to Jay (jcampan). | |
| 301 DCHECK(focus_manager != NULL) << "No focus manager when restoring focus."; | |
| 302 | |
| 303 if (last_focused_view->IsFocusable() && focus_manager && | |
| 304 focus_manager->ContainsView(last_focused_view)) { | |
| 305 last_focused_view->RequestFocus(); | |
| 306 } else { | |
| 307 // The focused view may not belong to the same window hierarchy (e.g. | |
| 308 // if the location bar was focused and the tab is dragged out), or it may | |
| 309 // no longer be focusable (e.g. if the location bar was focused and then | |
| 310 // we switched to fullscreen mode). In that case we default to the | |
| 311 // default focus. | |
| 312 SetInitialFocus(); | |
| 313 } | |
| 314 view_storage->RemoveView(last_focused_view_storage_id_); | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 void TabContentsViewWin::UpdateDragCursor(bool is_drop_target) { | |
| 319 drop_target_->set_is_drop_target(is_drop_target); | |
| 320 } | |
| 321 | |
| 322 void TabContentsViewWin::TakeFocus(bool reverse) { | |
| 323 if (!tab_contents()->delegate()->TakeFocus(reverse)) { | |
| 324 views::FocusManager* focus_manager = | |
| 325 views::FocusManager::GetFocusManager(GetNativeView()); | |
| 326 | |
| 327 // We may not have a focus manager if the tab has been switched before this | |
| 328 // message arrived. | |
| 329 if (focus_manager) | |
| 330 focus_manager->AdvanceFocus(reverse); | |
| 331 } | |
| 332 } | |
| 333 | |
| 334 void TabContentsViewWin::HandleKeyboardEvent( | |
| 335 const NativeWebKeyboardEvent& event) { | |
| 336 // Previous calls to TranslateMessage can generate CHAR events as well as | |
| 337 // RAW_KEY_DOWN events, even if the latter triggered an accelerator. In these | |
| 338 // cases, we discard the CHAR events. | |
| 339 if (event.type == WebInputEvent::Char && ignore_next_char_event_) { | |
| 340 ignore_next_char_event_ = false; | |
| 341 return; | |
| 342 } | |
| 343 ignore_next_char_event_ = false; | |
| 344 | |
| 345 // The renderer returned a keyboard event it did not process. This may be | |
| 346 // a keyboard shortcut that we have to process. | |
| 347 if (event.type == WebInputEvent::RawKeyDown) { | |
| 348 views::FocusManager* focus_manager = | |
| 349 views::FocusManager::GetFocusManager(GetNativeView()); | |
| 350 // We may not have a focus_manager at this point (if the tab has been | |
| 351 // switched by the time this message returned). | |
| 352 if (focus_manager) { | |
| 353 views::Accelerator accelerator(event.windowsKeyCode, | |
| 354 (event.modifiers & WebInputEvent::ShiftKey) == | |
| 355 WebInputEvent::ShiftKey, | |
| 356 (event.modifiers & WebInputEvent::ControlKey) == | |
| 357 WebInputEvent::ControlKey, | |
| 358 (event.modifiers & WebInputEvent::AltKey) == | |
| 359 WebInputEvent::AltKey); | |
| 360 | |
| 361 // This is tricky: we want to set ignore_next_char_event_ if | |
| 362 // ProcessAccelerator returns true. But ProcessAccelerator might delete | |
| 363 // |this| if the accelerator is a "close tab" one. So we speculatively | |
| 364 // set the flag and fix it if no event was handled. | |
| 365 ignore_next_char_event_ = true; | |
| 366 if (focus_manager->ProcessAccelerator(accelerator)) { | |
| 367 // DANGER: |this| could be deleted now! | |
| 368 return; | |
| 369 } else { | |
| 370 // ProcessAccelerator didn't handle the accelerator, so we know both | |
| 371 // that |this| is still valid, and that we didn't want to set the flag. | |
| 372 ignore_next_char_event_ = false; | |
| 373 } | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 // Any unhandled keyboard/character messages should be defproced. | |
| 378 // This allows stuff like Alt+F4, etc to work correctly. | |
| 379 DefWindowProc(event.os_event.hwnd, | |
| 380 event.os_event.message, | |
| 381 event.os_event.wParam, | |
| 382 event.os_event.lParam); | |
| 383 } | |
| 384 | |
| 385 void TabContentsViewWin::ShowContextMenu(const ContextMenuParams& params) { | |
| 386 RenderViewContextMenuWin menu(tab_contents(), | |
| 387 params, | |
| 388 GetNativeView()); | |
| 389 | |
| 390 POINT screen_pt = { params.x, params.y }; | |
| 391 MapWindowPoints(GetNativeView(), HWND_DESKTOP, &screen_pt, 1); | |
| 392 | |
| 393 // Enable recursive tasks on the message loop so we can get updates while | |
| 394 // the context menu is being displayed. | |
| 395 bool old_state = MessageLoop::current()->NestableTasksAllowed(); | |
| 396 MessageLoop::current()->SetNestableTasksAllowed(true); | |
| 397 menu.RunMenuAt(screen_pt.x, screen_pt.y); | |
| 398 MessageLoop::current()->SetNestableTasksAllowed(old_state); | |
| 399 } | |
| 400 | |
| 401 void TabContentsViewWin::OnHScroll(int scroll_type, short position, | |
| 402 HWND scrollbar) { | |
| 403 ScrollCommon(WM_HSCROLL, scroll_type, position, scrollbar); | |
| 404 } | |
| 405 | |
| 406 void TabContentsViewWin::OnMouseLeave() { | |
| 407 // Let our delegate know that the mouse moved (useful for resetting status | |
| 408 // bubble state). | |
| 409 if (tab_contents()->delegate()) | |
| 410 tab_contents()->delegate()->ContentsMouseEvent(tab_contents(), false); | |
| 411 SetMsgHandled(FALSE); | |
| 412 } | |
| 413 | |
| 414 LRESULT TabContentsViewWin::OnMouseRange(UINT msg, | |
| 415 WPARAM w_param, LPARAM l_param) { | |
| 416 switch (msg) { | |
| 417 case WM_LBUTTONDOWN: | |
| 418 case WM_MBUTTONDOWN: | |
| 419 case WM_RBUTTONDOWN: { | |
| 420 // Make sure this TabContents is activated when it is clicked on. | |
| 421 if (tab_contents()->delegate()) | |
| 422 tab_contents()->delegate()->ActivateContents(tab_contents()); | |
| 423 break; | |
| 424 } | |
| 425 case WM_MOUSEMOVE: | |
| 426 // Let our delegate know that the mouse moved (useful for resetting status | |
| 427 // bubble state). | |
| 428 if (tab_contents()->delegate()) { | |
| 429 tab_contents()->delegate()->ContentsMouseEvent(tab_contents(), true); | |
| 430 } | |
| 431 break; | |
| 432 default: | |
| 433 break; | |
| 434 } | |
| 435 | |
| 436 return 0; | |
| 437 } | |
| 438 | |
| 439 void TabContentsViewWin::OnPaint(HDC junk_dc) { | |
| 440 if (tab_contents()->render_view_host() && | |
| 441 !tab_contents()->render_view_host()->IsRenderViewLive()) { | |
| 442 if (!sad_tab_.get()) | |
| 443 sad_tab_.reset(new SadTabView); | |
| 444 CRect cr; | |
| 445 GetClientRect(&cr); | |
| 446 sad_tab_->SetBounds(gfx::Rect(cr)); | |
| 447 gfx::CanvasPaint canvas(GetNativeView(), true); | |
| 448 sad_tab_->ProcessPaint(&canvas); | |
| 449 return; | |
| 450 } | |
| 451 | |
| 452 // We need to do this to validate the dirty area so we don't end up in a | |
| 453 // WM_PAINTstorm that causes other mysterious bugs (such as WM_TIMERs not | |
| 454 // firing etc). It doesn't matter that we don't have any non-clipped area. | |
| 455 CPaintDC dc(GetNativeView()); | |
| 456 SetMsgHandled(FALSE); | |
| 457 } | |
| 458 | |
| 459 // A message is reflected here from view(). | |
| 460 // Return non-zero to indicate that it is handled here. | |
| 461 // Return 0 to allow view() to further process it. | |
| 462 LRESULT TabContentsViewWin::OnReflectedMessage(UINT msg, WPARAM w_param, | |
| 463 LPARAM l_param) { | |
| 464 MSG* message = reinterpret_cast<MSG*>(l_param); | |
| 465 switch (message->message) { | |
| 466 case WM_MOUSEWHEEL: | |
| 467 // This message is reflected from the view() to this window. | |
| 468 if (GET_KEYSTATE_WPARAM(message->wParam) & MK_CONTROL) { | |
| 469 WheelZoom(GET_WHEEL_DELTA_WPARAM(message->wParam)); | |
| 470 return 1; | |
| 471 } | |
| 472 break; | |
| 473 case WM_HSCROLL: | |
| 474 case WM_VSCROLL: | |
| 475 if (ScrollZoom(LOWORD(message->wParam))) | |
| 476 return 1; | |
| 477 default: | |
| 478 break; | |
| 479 } | |
| 480 | |
| 481 return 0; | |
| 482 } | |
| 483 | |
| 484 void TabContentsViewWin::OnSetFocus(HWND window) { | |
| 485 // TODO(jcampan): figure out why removing this prevents tabs opened in the | |
| 486 // background from properly taking focus. | |
| 487 // We NULL-check the render_view_host_ here because Windows can send us | |
| 488 // messages during the destruction process after it has been destroyed. | |
| 489 if (tab_contents()->render_widget_host_view()) { | |
| 490 HWND inner_hwnd = | |
| 491 tab_contents()->render_widget_host_view()->GetNativeView(); | |
| 492 if (::IsWindow(inner_hwnd)) | |
| 493 ::SetFocus(inner_hwnd); | |
| 494 } | |
| 495 } | |
| 496 | |
| 497 void TabContentsViewWin::OnVScroll(int scroll_type, short position, | |
| 498 HWND scrollbar) { | |
| 499 ScrollCommon(WM_VSCROLL, scroll_type, position, scrollbar); | |
| 500 } | |
| 501 | |
| 502 void TabContentsViewWin::OnWindowPosChanged(WINDOWPOS* window_pos) { | |
| 503 if (window_pos->flags & SWP_HIDEWINDOW) { | |
| 504 WasHidden(); | |
| 505 } else { | |
| 506 // The TabContents was shown by a means other than the user selecting a | |
| 507 // Tab, e.g. the window was minimized then restored. | |
| 508 if (window_pos->flags & SWP_SHOWWINDOW) | |
| 509 WasShown(); | |
| 510 | |
| 511 // Unless we were specifically told not to size, cause the renderer to be | |
| 512 // sized to the new bounds, which forces a repaint. Not required for the | |
| 513 // simple minimize-restore case described above, for example, since the | |
| 514 // size hasn't changed. | |
| 515 if (!(window_pos->flags & SWP_NOSIZE)) | |
| 516 WasSized(gfx::Size(window_pos->cx, window_pos->cy)); | |
| 517 } | |
| 518 } | |
| 519 | |
| 520 void TabContentsViewWin::OnSize(UINT param, const CSize& size) { | |
| 521 WidgetWin::OnSize(param, size); | |
| 522 | |
| 523 // Hack for thinkpad touchpad driver. | |
| 524 // Set fake scrollbars so that we can get scroll messages, | |
| 525 SCROLLINFO si = {0}; | |
| 526 si.cbSize = sizeof(si); | |
| 527 si.fMask = SIF_ALL; | |
| 528 | |
| 529 si.nMin = 1; | |
| 530 si.nMax = 100; | |
| 531 si.nPage = 10; | |
| 532 si.nPos = 50; | |
| 533 | |
| 534 ::SetScrollInfo(GetNativeView(), SB_HORZ, &si, FALSE); | |
| 535 ::SetScrollInfo(GetNativeView(), SB_VERT, &si, FALSE); | |
| 536 } | |
| 537 | |
| 538 LRESULT TabContentsViewWin::OnNCCalcSize(BOOL w_param, LPARAM l_param) { | |
| 539 // Hack for thinkpad mouse wheel driver. We have set the fake scroll bars | |
| 540 // to receive scroll messages from thinkpad touchpad driver. Suppress | |
| 541 // painting of scrollbars by returning 0 size for them. | |
| 542 return 0; | |
| 543 } | |
| 544 | |
| 545 void TabContentsViewWin::OnNCPaint(HRGN rgn) { | |
| 546 // Suppress default WM_NCPAINT handling. We don't need to do anything | |
| 547 // here since the view will draw everything correctly. | |
| 548 } | |
| 549 | |
| 550 void TabContentsViewWin::ScrollCommon(UINT message, int scroll_type, | |
| 551 short position, HWND scrollbar) { | |
| 552 // This window can receive scroll events as a result of the ThinkPad's | |
| 553 // Trackpad scroll wheel emulation. | |
| 554 if (!ScrollZoom(scroll_type)) { | |
| 555 // Reflect scroll message to the view() to give it a chance | |
| 556 // to process scrolling. | |
| 557 SendMessage(GetContentNativeView(), message, | |
| 558 MAKELONG(scroll_type, position), | |
| 559 reinterpret_cast<LPARAM>(scrollbar)); | |
| 560 } | |
| 561 } | |
| 562 | |
| 563 void TabContentsViewWin::WasHidden() { | |
| 564 tab_contents()->HideContents(); | |
| 565 } | |
| 566 | |
| 567 void TabContentsViewWin::WasShown() { | |
| 568 tab_contents()->ShowContents(); | |
| 569 } | |
| 570 | |
| 571 void TabContentsViewWin::WasSized(const gfx::Size& size) { | |
| 572 if (tab_contents()->interstitial_page()) | |
| 573 tab_contents()->interstitial_page()->SetSize(size); | |
| 574 if (tab_contents()->render_widget_host_view()) | |
| 575 tab_contents()->render_widget_host_view()->SetSize(size); | |
| 576 | |
| 577 // TODO(brettw) this function can probably be moved to this class. | |
| 578 tab_contents()->RepositionSupressedPopupsToFit(); | |
| 579 } | |
| 580 | |
| 581 bool TabContentsViewWin::ScrollZoom(int scroll_type) { | |
| 582 // If ctrl is held, zoom the UI. There are three issues with this: | |
| 583 // 1) Should the event be eaten or forwarded to content? We eat the event, | |
| 584 // which is like Firefox and unlike IE. | |
| 585 // 2) Should wheel up zoom in or out? We zoom in (increase font size), which | |
| 586 // is like IE and Google maps, but unlike Firefox. | |
| 587 // 3) Should the mouse have to be over the content area? We zoom as long as | |
| 588 // content has focus, although FF and IE require that the mouse is over | |
| 589 // content. This is because all events get forwarded when content has | |
| 590 // focus. | |
| 591 if (GetAsyncKeyState(VK_CONTROL) & 0x8000) { | |
| 592 int distance = 0; | |
| 593 switch (scroll_type) { | |
| 594 case SB_LINEUP: | |
| 595 distance = WHEEL_DELTA; | |
| 596 break; | |
| 597 case SB_LINEDOWN: | |
| 598 distance = -WHEEL_DELTA; | |
| 599 break; | |
| 600 // TODO(joshia): Handle SB_PAGEUP, SB_PAGEDOWN, SB_THUMBPOSITION, | |
| 601 // and SB_THUMBTRACK for completeness | |
| 602 default: | |
| 603 break; | |
| 604 } | |
| 605 | |
| 606 WheelZoom(distance); | |
| 607 return true; | |
| 608 } | |
| 609 return false; | |
| 610 } | |
| 611 | |
| 612 void TabContentsViewWin::WheelZoom(int distance) { | |
| 613 if (tab_contents()->delegate()) { | |
| 614 bool zoom_in = distance > 0; | |
| 615 tab_contents()->delegate()->ContentsZoomChange(zoom_in); | |
| 616 } | |
| 617 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 147074:
Merging r18584 into chrome/browser/views/tab_contents/tab_contents_view_win.c... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/