// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "chrome/browser/renderer_host/render_widget_host_view_gtk.h" // If this gets included after the gtk headers, then a bunch of compiler // errors happen because of a "#define Status int" in Xlib.h, which interacts // badly with net::URLRequestStatus::Status. #include "chrome/common/render_messages.h" #include #include #include #include #include #include #include #include "base/command_line.h" #include "base/logging.h" #include "base/message_loop.h" #include "base/metrics/histogram.h" #include "base/string_number_conversions.h" #include "base/time.h" #include "base/utf_string_conversions.h" #include "chrome/browser/renderer_host/gtk_im_context_wrapper.h" #include "chrome/browser/renderer_host/gtk_key_bindings_handler.h" #include "chrome/browser/ui/gtk/gtk_util.h" #include "chrome/common/chrome_switches.h" #include "content/browser/renderer_host/backing_store_x.h" #include "content/browser/renderer_host/render_view_host.h" #include "content/browser/renderer_host/render_view_host_delegate.h" #include "content/browser/renderer_host/render_widget_host.h" #include "content/common/native_web_keyboard_event.h" #include "third_party/WebKit/Source/WebKit/chromium/public/gtk/WebInputEventFactory.h" #include "ui/base/l10n/l10n_util.h" #include "ui/base/x/x11_util.h" #include "ui/gfx/gtk_preserve_window.h" #include "ui/gfx/gtk_native_view_id_manager.h" #include "webkit/glue/webaccessibility.h" #include "webkit/glue/webcursor_gtk_data.h" #include "webkit/plugins/npapi/webplugin.h" #if defined(OS_CHROMEOS) #include "views/widget/tooltip_window_gtk.h" #endif // defined(OS_CHROMEOS) namespace { const int kMaxWindowWidth = 4000; const int kMaxWindowHeight = 4000; const char* kRenderWidgetHostViewKey = "__RENDER_WIDGET_HOST_VIEW__"; // The duration of the fade-out animation. See |overlay_animation_|. const int kFadeEffectDuration = 300; #if defined(OS_CHROMEOS) // TODO(davemoore) Under Chromeos we are increasing the rate that the trackpad // generates events to get better precisions. Eventually we will coordinate the // driver and this setting to ensure they match. const float kDefaultScrollPixelsPerTick = 20; #else // See WebInputEventFactor.cpp for a reason for this being the default // scroll size for linux. const float kDefaultScrollPixelsPerTick = 160.0f / 3.0f; #endif // Returns the spinning cursor used for loading state. GdkCursor* GetMozSpinningCursor() { static GdkCursor* moz_spinning_cursor = NULL; if (!moz_spinning_cursor) { const GdkColor fg = { 0, 0, 0, 0 }; const GdkColor bg = { 65535, 65535, 65535, 65535 }; GdkPixmap* source = gdk_bitmap_create_from_data(NULL, moz_spinning_bits, 32, 32); GdkPixmap* mask = gdk_bitmap_create_from_data(NULL, moz_spinning_mask_bits, 32, 32); moz_spinning_cursor = gdk_cursor_new_from_pixmap(source, mask, &fg, &bg, 2, 2); g_object_unref(source); g_object_unref(mask); } return moz_spinning_cursor; } } // namespace using WebKit::WebInputEventFactory; using WebKit::WebMouseWheelEvent; // This class is a simple convenience wrapper for Gtk functions. It has only // static methods. class RenderWidgetHostViewGtkWidget { public: static GtkWidget* CreateNewWidget(RenderWidgetHostViewGtk* host_view) { GtkWidget* widget = gtk_preserve_window_new(); gtk_widget_set_name(widget, "chrome-render-widget-host-view"); // We manually double-buffer in Paint() because Paint() may or may not be // called in repsonse to an "expose-event" signal. gtk_widget_set_double_buffered(widget, FALSE); gtk_widget_set_redraw_on_allocate(widget, FALSE); #if defined(NDEBUG) gtk_widget_modify_bg(widget, GTK_STATE_NORMAL, >k_util::kGdkWhite); #else gtk_widget_modify_bg(widget, GTK_STATE_NORMAL, >k_util::kGdkGreen); #endif // Allow the browser window to be resized freely. gtk_widget_set_size_request(widget, 0, 0); gtk_widget_add_events(widget, GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_FOCUS_CHANGE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); GTK_WIDGET_SET_FLAGS(widget, GTK_CAN_FOCUS); g_signal_connect(widget, "expose-event", G_CALLBACK(OnExposeEvent), host_view); g_signal_connect(widget, "key-press-event", G_CALLBACK(OnKeyPressReleaseEvent), host_view); g_signal_connect(widget, "key-release-event", G_CALLBACK(OnKeyPressReleaseEvent), host_view); g_signal_connect(widget, "focus-in-event", G_CALLBACK(OnFocusIn), host_view); g_signal_connect(widget, "focus-out-event", G_CALLBACK(OnFocusOut), host_view); g_signal_connect(widget, "grab-notify", G_CALLBACK(OnGrabNotify), host_view); g_signal_connect(widget, "button-press-event", G_CALLBACK(OnButtonPressReleaseEvent), host_view); g_signal_connect(widget, "button-release-event", G_CALLBACK(OnButtonPressReleaseEvent), host_view); g_signal_connect(widget, "motion-notify-event", G_CALLBACK(OnMouseMoveEvent), host_view); g_signal_connect(widget, "enter-notify-event", G_CALLBACK(OnCrossingEvent), host_view); g_signal_connect(widget, "leave-notify-event", G_CALLBACK(OnCrossingEvent), host_view); g_signal_connect(widget, "client-event", G_CALLBACK(OnClientEvent), host_view); // Connect after so that we are called after the handler installed by the // TabContentsView which handles zoom events. g_signal_connect_after(widget, "scroll-event", G_CALLBACK(OnMouseScrollEvent), host_view); g_object_set_data(G_OBJECT(widget), kRenderWidgetHostViewKey, static_cast(host_view)); return widget; } private: static gboolean OnExposeEvent(GtkWidget* widget, GdkEventExpose* expose, RenderWidgetHostViewGtk* host_view) { if (host_view->is_hidden_) return FALSE; const gfx::Rect damage_rect(expose->area); host_view->Paint(damage_rect); return FALSE; } static gboolean OnKeyPressReleaseEvent(GtkWidget* widget, GdkEventKey* event, RenderWidgetHostViewGtk* host_view) { // Force popups or fullscreen windows to close on Escape so they won't keep // the keyboard grabbed or be stuck onscreen if the renderer is hanging. bool should_close_on_escape = (host_view->IsPopup() && host_view->NeedsInputGrab()) || host_view->is_fullscreen_; if (should_close_on_escape && GDK_Escape == event->keyval) { host_view->host_->Shutdown(); } else { // Send key event to input method. host_view->im_context_->ProcessKeyEvent(event); } // We return TRUE because we did handle the event. If it turns out webkit // can't handle the event, we'll deal with it in // RenderView::UnhandledKeyboardEvent(). return TRUE; } static gboolean OnFocusIn(GtkWidget* widget, GdkEventFocus* focus, RenderWidgetHostViewGtk* host_view) { host_view->ShowCurrentCursor(); host_view->GetRenderWidgetHost()->GotFocus(); // The only way to enable a GtkIMContext object is to call its focus in // handler. host_view->im_context_->OnFocusIn(); return TRUE; } static gboolean OnFocusOut(GtkWidget* widget, GdkEventFocus* focus, RenderWidgetHostViewGtk* host_view) { // Whenever we lose focus, set the cursor back to that of our parent window, // which should be the default arrow. gdk_window_set_cursor(widget->window, NULL); // If we are showing a context menu, maintain the illusion that webkit has // focus. if (!host_view->is_showing_context_menu_) host_view->GetRenderWidgetHost()->Blur(); // Prevents us from stealing input context focus in OnGrabNotify() handler. host_view->was_focused_before_grab_ = false; // Disable the GtkIMContext object. host_view->im_context_->OnFocusOut(); return TRUE; } // Called when we are shadowed or unshadowed by a keyboard grab (which will // occur for activatable popups, such as dropdown menus). Popup windows do not // take focus, so we never get a focus out or focus in event when they are // shown, and must rely on this signal instead. static void OnGrabNotify(GtkWidget* widget, gboolean was_grabbed, RenderWidgetHostViewGtk* host_view) { if (was_grabbed) { if (host_view->was_focused_before_grab_) host_view->im_context_->OnFocusIn(); } else { host_view->was_focused_before_grab_ = host_view->HasFocus(); if (host_view->was_focused_before_grab_) { gdk_window_set_cursor(widget->window, NULL); host_view->im_context_->OnFocusOut(); } } } static gboolean OnButtonPressReleaseEvent( GtkWidget* widget, GdkEventButton* event, RenderWidgetHostViewGtk* host_view) { #if defined (OS_CHROMEOS) // We support buttons 8 & 9 for scrolling with an attached USB mouse // in ChromeOS. We do this separately from the builtin scrolling support // because we want to support the user's expectations about the amount // scrolled on each event. xorg.conf on chromeos specifies buttons // 8 & 9 for the scroll wheel for the attached USB mouse. if (event->type == GDK_BUTTON_RELEASE && (event->button == 8 || event->button == 9)) { GdkEventScroll scroll_event; scroll_event.type = GDK_SCROLL; scroll_event.window = event->window; scroll_event.send_event = event->send_event; scroll_event.time = event->time; scroll_event.x = event->x; scroll_event.y = event->y; scroll_event.state = event->state; if (event->state & GDK_SHIFT_MASK) { scroll_event.direction = event->button == 8 ? GDK_SCROLL_LEFT : GDK_SCROLL_RIGHT; } else { scroll_event.direction = event->button == 8 ? GDK_SCROLL_UP : GDK_SCROLL_DOWN; } scroll_event.device = event->device; scroll_event.x_root = event->x_root; scroll_event.y_root = event->y_root; WebMouseWheelEvent web_event = WebInputEventFactory::mouseWheelEvent(&scroll_event); host_view->GetRenderWidgetHost()->ForwardWheelEvent(web_event); } #endif if (!(event->button == 1 || event->button == 2 || event->button == 3)) return FALSE; // We do not forward any other buttons to the renderer. if (event->type == GDK_2BUTTON_PRESS || event->type == GDK_3BUTTON_PRESS) return FALSE; // If we don't have focus already, this mouse click will focus us. if (!gtk_widget_is_focus(widget)) host_view->host_->OnMouseActivate(); // Confirm existing composition text on mouse click events, to make sure // the input caret won't be moved with an ongoing composition session. host_view->im_context_->ConfirmComposition(); // We want to translate the coordinates of events that do not originate // from this widget to be relative to the top left of the widget. GtkWidget* event_widget = gtk_get_event_widget( reinterpret_cast(event)); if (event_widget != widget) { int x = 0; int y = 0; gtk_widget_get_pointer(widget, &x, &y); // If the mouse event happens outside our popup, force the popup to // close. We do this so a hung renderer doesn't prevent us from // releasing the x pointer grab. bool click_in_popup = x >= 0 && y >= 0 && x < widget->allocation.width && y < widget->allocation.height; // Only Shutdown on mouse downs. Mouse ups can occur outside the render // view if the user drags for DnD or while using the scrollbar on a select // dropdown. Don't shutdown if we are not a popup. if (event->type != GDK_BUTTON_RELEASE && host_view->IsPopup() && !host_view->is_popup_first_mouse_release_ && !click_in_popup) { host_view->host_->Shutdown(); return FALSE; } event->x = x; event->y = y; } // TODO(evanm): why is this necessary here but not in test shell? // This logic is the same as GtkButton. if (event->type == GDK_BUTTON_PRESS && !GTK_WIDGET_HAS_FOCUS(widget)) gtk_widget_grab_focus(widget); host_view->is_popup_first_mouse_release_ = false; host_view->GetRenderWidgetHost()->ForwardMouseEvent( WebInputEventFactory::mouseEvent(event)); // Although we did handle the mouse event, we need to let other handlers // run (in particular the one installed by TabContentsViewGtk). return FALSE; } static gboolean OnMouseMoveEvent(GtkWidget* widget, GdkEventMotion* event, RenderWidgetHostViewGtk* host_view) { // We want to translate the coordinates of events that do not originate // from this widget to be relative to the top left of the widget. GtkWidget* event_widget = gtk_get_event_widget( reinterpret_cast(event)); if (event_widget != widget) { int x = 0; int y = 0; gtk_widget_get_pointer(widget, &x, &y); event->x = x; event->y = y; } host_view->ModifyEventForEdgeDragging(widget, event); host_view->GetRenderWidgetHost()->ForwardMouseEvent( WebInputEventFactory::mouseEvent(event)); return FALSE; } static gboolean OnCrossingEvent(GtkWidget* widget, GdkEventCrossing* event, RenderWidgetHostViewGtk* host_view) { const int any_button_mask = GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK | GDK_BUTTON4_MASK | GDK_BUTTON5_MASK; // Only forward crossing events if the mouse button is not down. // (When the mouse button is down, the proper events are already being // sent by ButtonPressReleaseEvent and MouseMoveEvent, above, and if we // additionally send this crossing event with the state indicating the // button is down, it causes problems with drag and drop in WebKit.) if (!(event->state & any_button_mask)) { host_view->GetRenderWidgetHost()->ForwardMouseEvent( WebInputEventFactory::mouseEvent(event)); } return FALSE; } static gboolean OnClientEvent(GtkWidget* widget, GdkEventClient* event, RenderWidgetHostViewGtk* host_view) { VLOG(1) << "client event type: " << event->message_type << " data_format: " << event->data_format << " data: " << event->data.l; return TRUE; } // Allow the vertical scroll delta to be overridden from the command line. // This will allow us to test more easily to discover the amount // (either hard coded or computed) that's best. static float GetScrollPixelsPerTick() { static float scroll_pixels = -1; if (scroll_pixels < 0) { // TODO(brettw): Remove the command line switch (crbug.com/63525) scroll_pixels = kDefaultScrollPixelsPerTick; CommandLine* command_line = CommandLine::ForCurrentProcess(); std::string scroll_pixels_option = command_line->GetSwitchValueASCII(switches::kScrollPixels); if (!scroll_pixels_option.empty()) { double v; if (base::StringToDouble(scroll_pixels_option, &v)) scroll_pixels = static_cast(v); } DCHECK_GT(scroll_pixels, 0); } return scroll_pixels; } // Return the net up / down (or left / right) distance represented by events // in the events will be removed from the queue. We only look at the top of // queue...any other type of event will cause us not to look farther. // If there is a change to the set of modifier keys or scroll axis // in the events we will stop looking as well. static int GetPendingScrollDelta(bool vert, guint current_event_state) { int num_clicks = 0; GdkEvent* event; bool event_coalesced = true; while ((event = gdk_event_get()) && event_coalesced) { event_coalesced = false; if (event->type == GDK_SCROLL) { GdkEventScroll scroll = event->scroll; if (scroll.state & GDK_SHIFT_MASK) { if (scroll.direction == GDK_SCROLL_UP) scroll.direction = GDK_SCROLL_LEFT; else if (scroll.direction == GDK_SCROLL_DOWN) scroll.direction = GDK_SCROLL_RIGHT; } if (vert) { if (scroll.direction == GDK_SCROLL_UP || scroll.direction == GDK_SCROLL_DOWN) { if (scroll.state == current_event_state) { num_clicks += (scroll.direction == GDK_SCROLL_UP ? 1 : -1); gdk_event_free(event); event_coalesced = true; } } } else { if (scroll.direction == GDK_SCROLL_LEFT || scroll.direction == GDK_SCROLL_RIGHT) { if (scroll.state == current_event_state) { num_clicks += (scroll.direction == GDK_SCROLL_LEFT ? 1 : -1); gdk_event_free(event); event_coalesced = true; } } } } } // If we have an event left we put it back on the queue. if (event) { gdk_event_put(event); gdk_event_free(event); } return num_clicks * GetScrollPixelsPerTick(); } static gboolean OnMouseScrollEvent(GtkWidget* widget, GdkEventScroll* event, RenderWidgetHostViewGtk* host_view) { // If the user is holding shift, translate it into a horizontal scroll. We // don't care what other modifiers the user may be holding (zooming is // handled at the TabContentsView level). if (event->state & GDK_SHIFT_MASK) { if (event->direction == GDK_SCROLL_UP) event->direction = GDK_SCROLL_LEFT; else if (event->direction == GDK_SCROLL_DOWN) event->direction = GDK_SCROLL_RIGHT; } WebMouseWheelEvent web_event = WebInputEventFactory::mouseWheelEvent(event); // We peek ahead at the top of the queue to look for additional pending // scroll events. if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_DOWN) { if (event->direction == GDK_SCROLL_UP) web_event.deltaY = GetScrollPixelsPerTick(); else web_event.deltaY = -GetScrollPixelsPerTick(); web_event.deltaY += GetPendingScrollDelta(true, event->state); } else { if (event->direction == GDK_SCROLL_LEFT) web_event.deltaX = GetScrollPixelsPerTick(); else web_event.deltaX = -GetScrollPixelsPerTick(); web_event.deltaX += GetPendingScrollDelta(false, event->state); } host_view->GetRenderWidgetHost()->ForwardWheelEvent(web_event); return FALSE; } DISALLOW_IMPLICIT_CONSTRUCTORS(RenderWidgetHostViewGtkWidget); }; // static RenderWidgetHostView* RenderWidgetHostView::CreateViewForWidget( RenderWidgetHost* widget) { return new RenderWidgetHostViewGtk(widget); } RenderWidgetHostViewGtk::RenderWidgetHostViewGtk(RenderWidgetHost* widget_host) : host_(widget_host), about_to_validate_and_paint_(false), is_hidden_(false), is_loading_(false), is_showing_context_menu_(false), overlay_color_(0), overlay_animation_(this), parent_(NULL), is_popup_first_mouse_release_(true), was_focused_before_grab_(false), do_x_grab_(false), is_fullscreen_(false), destroy_handler_id_(0), dragged_at_horizontal_edge_(0), dragged_at_vertical_edge_(0), accelerated_surface_acquired_(false) { host_->set_view(this); } RenderWidgetHostViewGtk::~RenderWidgetHostViewGtk() { view_.Destroy(); } void RenderWidgetHostViewGtk::InitAsChild() { DoSharedInit(); overlay_animation_.SetDuration(kFadeEffectDuration); overlay_animation_.SetSlideDuration(kFadeEffectDuration); gtk_widget_show(view_.get()); } void RenderWidgetHostViewGtk::InitAsPopup( RenderWidgetHostView* parent_host_view, const gfx::Rect& pos) { // If we aren't a popup, then |window| will be leaked. DCHECK(IsPopup()); DoSharedInit(); parent_ = parent_host_view->GetNativeView(); GtkWindow* window = GTK_WINDOW(gtk_window_new(GTK_WINDOW_POPUP)); gtk_container_add(GTK_CONTAINER(window), view_.get()); DoPopupOrFullscreenInit(window, pos); // The underlying X window needs to be created and mapped by the above code // before we can grab the input devices. if (NeedsInputGrab()) { // Grab all input for the app. If a click lands outside the bounds of the // popup, WebKit will notice and destroy us. Before doing this we need // to ensure that the the popup is added to the browser's window group, // to allow for the grabs to work correctly. gtk_window_group_add_window(gtk_window_get_group( GTK_WINDOW(gtk_widget_get_toplevel(parent_))), window); gtk_grab_add(view_.get()); // We need for the application to do an X grab as well. However if the app // already has an X grab (as in the case of extension popup), an app grab // will suffice. do_x_grab_ = !gdk_pointer_is_grabbed(); // Now grab all of X's input. if (do_x_grab_) { gdk_pointer_grab( parent_->window, TRUE, // Only events outside of the window are reported with respect // to |parent_->window|. static_cast(GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK), NULL, NULL, GDK_CURRENT_TIME); // We grab keyboard events too so things like alt+tab are eaten. gdk_keyboard_grab(parent_->window, TRUE, GDK_CURRENT_TIME); } } } void RenderWidgetHostViewGtk::InitAsFullscreen() { DoSharedInit(); is_fullscreen_ = true; GtkWindow* window = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL)); gtk_window_set_decorated(window, FALSE); gtk_window_fullscreen(window); g_signal_connect(GTK_WIDGET(window), "window-state-event", G_CALLBACK(&OnWindowStateEventThunk), this); destroy_handler_id_ = g_signal_connect(GTK_WIDGET(window), "destroy", G_CALLBACK(OnDestroyThunk), this); gtk_container_add(GTK_CONTAINER(window), view_.get()); // Try to move and resize the window to cover the screen in case the window // manager doesn't support _NET_WM_STATE_FULLSCREEN. GdkScreen* screen = gtk_window_get_screen(window); gfx::Rect bounds( 0, 0, gdk_screen_get_width(screen), gdk_screen_get_height(screen)); DoPopupOrFullscreenInit(window, bounds); } RenderWidgetHost* RenderWidgetHostViewGtk::GetRenderWidgetHost() const { return host_; } void RenderWidgetHostViewGtk::DidBecomeSelected() { if (!is_hidden_) return; if (tab_switch_paint_time_.is_null()) tab_switch_paint_time_ = base::TimeTicks::Now(); is_hidden_ = false; host_->WasRestored(); } void RenderWidgetHostViewGtk::WasHidden() { if (is_hidden_) return; // If we receive any more paint messages while we are hidden, we want to // ignore them so we don't re-allocate the backing store. We will paint // everything again when we become selected again. is_hidden_ = true; // If we have a renderer, then inform it that we are being hidden so it can // reduce its resource utilization. GetRenderWidgetHost()->WasHidden(); } void RenderWidgetHostViewGtk::SetSize(const gfx::Size& size) { int width = std::min(size.width(), kMaxWindowWidth); int height = std::min(size.height(), kMaxWindowHeight); if (IsPopup()) { // We're a popup, honor the size request. gtk_widget_set_size_request(view_.get(), width, height); } else { #if defined(TOOLKIT_VIEWS) // TOOLKIT_VIEWS' resize logic flow matches windows. so we go ahead and // size the widget. In GTK+, the size of the widget is determined by its // children. gtk_widget_set_size_request(view_.get(), width, height); #endif } // Update the size of the RWH. if (requested_size_.width() != width || requested_size_.height() != height) { requested_size_ = gfx::Size(width, height); host_->WasResized(); } } void RenderWidgetHostViewGtk::SetBounds(const gfx::Rect& rect) { // This is called when webkit has sent us a Move message. if (IsPopup()) { gtk_window_move(GTK_WINDOW(gtk_widget_get_toplevel(view_.get())), rect.x(), rect.y()); } SetSize(rect.size()); } gfx::NativeView RenderWidgetHostViewGtk::GetNativeView() { return view_.get(); } void RenderWidgetHostViewGtk::MovePluginWindows( const std::vector& moves) { for (size_t i = 0; i < moves.size(); ++i) { plugin_container_manager_.MovePluginContainer(moves[i]); } } void RenderWidgetHostViewGtk::Focus() { gtk_widget_grab_focus(view_.get()); } void RenderWidgetHostViewGtk::Blur() { // TODO(estade): We should be clearing native focus as well, but I know of no // way to do that without focusing another widget. host_->Blur(); } bool RenderWidgetHostViewGtk::HasFocus() { return gtk_widget_is_focus(view_.get()); } void RenderWidgetHostViewGtk::Show() { gtk_widget_show(view_.get()); } void RenderWidgetHostViewGtk::Hide() { gtk_widget_hide(view_.get()); } bool RenderWidgetHostViewGtk::IsShowing() { // TODO(jcivelli): use gtk_widget_get_visible once we build with GTK 2.18. return (GTK_WIDGET_FLAGS(view_.get()) & GTK_VISIBLE) != 0; } gfx::Rect RenderWidgetHostViewGtk::GetViewBounds() const { GtkAllocation* alloc = &view_.get()->allocation; return gfx::Rect(alloc->x, alloc->y, requested_size_.width(), requested_size_.height()); } void RenderWidgetHostViewGtk::UpdateCursor(const WebCursor& cursor) { // Optimize the common case, where the cursor hasn't changed. // However, we can switch between different pixmaps, so only on the // non-pixmap branch. if (current_cursor_.GetCursorType() != GDK_CURSOR_IS_PIXMAP && current_cursor_.GetCursorType() == cursor.GetCursorType()) { return; } current_cursor_ = cursor; ShowCurrentCursor(); } void RenderWidgetHostViewGtk::SetIsLoading(bool is_loading) { is_loading_ = is_loading; // Only call ShowCurrentCursor() when it will actually change the cursor. if (current_cursor_.GetCursorType() == GDK_LAST_CURSOR) ShowCurrentCursor(); } void RenderWidgetHostViewGtk::ImeUpdateTextInputState( WebKit::WebTextInputType type, const gfx::Rect& caret_rect) { im_context_->UpdateInputMethodState(type, caret_rect); } void RenderWidgetHostViewGtk::ImeCancelComposition() { im_context_->CancelComposition(); } void RenderWidgetHostViewGtk::DidUpdateBackingStore( const gfx::Rect& scroll_rect, int scroll_dx, int scroll_dy, const std::vector& copy_rects) { if (is_hidden_) return; // TODO(darin): Implement the equivalent of Win32's ScrollWindowEX. Can that // be done using XCopyArea? Perhaps similar to // BackingStore::ScrollBackingStore? if (about_to_validate_and_paint_) invalid_rect_ = invalid_rect_.Union(scroll_rect); else Paint(scroll_rect); for (size_t i = 0; i < copy_rects.size(); ++i) { // Avoid double painting. NOTE: This is only relevant given the call to // Paint(scroll_rect) above. gfx::Rect rect = copy_rects[i].Subtract(scroll_rect); if (rect.IsEmpty()) continue; if (about_to_validate_and_paint_) invalid_rect_ = invalid_rect_.Union(rect); else Paint(rect); } } void RenderWidgetHostViewGtk::RenderViewGone(base::TerminationStatus status, int error_code) { Destroy(); plugin_container_manager_.set_host_widget(NULL); } void RenderWidgetHostViewGtk::Destroy() { if (accelerated_surface_acquired_) { GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance(); gfx::NativeViewId view_id = gfx::IdFromNativeView(GetNativeView()); gfx::PluginWindowHandle surface = manager->GetXIDForId(&surface, view_id); manager->ReleasePermanentXID(surface); } if (do_x_grab_) { // Undo the X grab. GdkDisplay* display = gtk_widget_get_display(parent_); gdk_display_pointer_ungrab(display, GDK_CURRENT_TIME); gdk_display_keyboard_ungrab(display, GDK_CURRENT_TIME); } // If this is a popup or fullscreen widget, then we need to destroy the window // that we created to hold it. if (IsPopup() || is_fullscreen_) { GtkWidget* window = gtk_widget_get_parent(view_.get()); // Disconnect the destroy handler so that we don't try to shutdown twice. if (is_fullscreen_) g_signal_handler_disconnect(window, destroy_handler_id_); gtk_widget_destroy(window); } // Remove |view_| from all containers now, so nothing else can hold a // reference to |view_|'s widget except possibly a gtk signal handler if // this code is currently executing within the context of a gtk signal // handler. Note that |view_| is still alive after this call. It will be // deallocated in the destructor. // See http://www.crbug.com/11847 for details. gtk_widget_destroy(view_.get()); // The RenderWidgetHost's destruction led here, so don't call it. host_ = NULL; MessageLoop::current()->DeleteSoon(FROM_HERE, this); } void RenderWidgetHostViewGtk::SetTooltipText(const std::wstring& tooltip_text) { // Maximum number of characters we allow in a tooltip. const int kMaxTooltipLength = 8 << 10; // Clamp the tooltip length to kMaxTooltipLength so that we don't // accidentally DOS the user with a mega tooltip (since GTK doesn't do // this itself). // I filed https://bugzilla.gnome.org/show_bug.cgi?id=604641 upstream. const string16 clamped_tooltip = l10n_util::TruncateString(WideToUTF16Hack(tooltip_text), kMaxTooltipLength); if (clamped_tooltip.empty()) { gtk_widget_set_has_tooltip(view_.get(), FALSE); } else { gtk_widget_set_tooltip_text(view_.get(), UTF16ToUTF8(clamped_tooltip).c_str()); #if defined(OS_CHROMEOS) tooltip_window_->SetTooltipText(UTF16ToWideHack(clamped_tooltip)); #endif // defined(OS_CHROMEOS) } } void RenderWidgetHostViewGtk::SelectionChanged(const std::string& text) { if (!text.empty()) { GtkClipboard* x_clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY); gtk_clipboard_set_text(x_clipboard, text.c_str(), text.length()); } } void RenderWidgetHostViewGtk::ShowingContextMenu(bool showing) { is_showing_context_menu_ = showing; } #if !defined(TOOLKIT_VIEWS) void RenderWidgetHostViewGtk::AppendInputMethodsContextMenu(MenuGtk* menu) { im_context_->AppendInputMethodsContextMenu(menu); } #endif gboolean RenderWidgetHostViewGtk::OnWindowStateEvent( GtkWidget* widget, GdkEventWindowState* event) { if (is_fullscreen_) { // If a fullscreen widget got unfullscreened (e.g. by the window manager), // close it. bool unfullscreened = (event->changed_mask & GDK_WINDOW_STATE_FULLSCREEN) && !(event->new_window_state & GDK_WINDOW_STATE_FULLSCREEN); if (unfullscreened) { host_->Shutdown(); return TRUE; } } return FALSE; } void RenderWidgetHostViewGtk::OnDestroy(GtkWidget* widget) { DCHECK(is_fullscreen_); host_->Shutdown(); } bool RenderWidgetHostViewGtk::NeedsInputGrab() { return popup_type_ == WebKit::WebPopupTypeSelect; } bool RenderWidgetHostViewGtk::IsPopup() const { return popup_type_ != WebKit::WebPopupTypeNone; } void RenderWidgetHostViewGtk::DoSharedInit() { view_.Own(RenderWidgetHostViewGtkWidget::CreateNewWidget(this)); im_context_.reset(new GtkIMContextWrapper(this)); key_bindings_handler_.reset(new GtkKeyBindingsHandler(view_.get())); plugin_container_manager_.set_host_widget(view_.get()); #if defined(OS_CHROMEOS) tooltip_window_.reset(new views::TooltipWindowGtk(view_.get())); #endif } void RenderWidgetHostViewGtk::DoPopupOrFullscreenInit(GtkWindow* window, const gfx::Rect& bounds) { requested_size_.SetSize(std::min(bounds.width(), kMaxWindowWidth), std::min(bounds.height(), kMaxWindowHeight)); host_->WasResized(); gtk_widget_set_size_request( view_.get(), requested_size_.width(), requested_size_.height()); // Don't allow the window to be resized. This also forces the window to // shrink down to the size of its child contents. gtk_window_set_resizable(window, FALSE); gtk_window_set_default_size(window, -1, -1); gtk_window_move(window, bounds.x(), bounds.y()); gtk_widget_show_all(GTK_WIDGET(window)); } BackingStore* RenderWidgetHostViewGtk::AllocBackingStore( const gfx::Size& size) { return new BackingStoreX(host_, size, ui::GetVisualFromGtkWidget(view_.get()), gtk_widget_get_visual(view_.get())->depth); } void RenderWidgetHostViewGtk::SetBackground(const SkBitmap& background) { RenderWidgetHostView::SetBackground(background); host_->Send(new ViewMsg_SetBackground(host_->routing_id(), background)); } void RenderWidgetHostViewGtk::ModifyEventForEdgeDragging( GtkWidget* widget, GdkEventMotion* event) { // If the widget is aligned with an edge of the monitor its on and the user // attempts to drag past that edge we track the number of times it has // occurred, so that we can force the widget to scroll when it otherwise // would be unable to, by modifying the (x,y) position in the drag // event that we forward on to webkit. If we get a move that's no longer a // drag or a drag indicating the user is no longer at that edge we stop // altering the drag events. int new_dragged_at_horizontal_edge = 0; int new_dragged_at_vertical_edge = 0; // Used for checking the edges of the monitor. We cache the values to save // roundtrips to the X server. static gfx::Size drag_monitor_size; if (event->state & GDK_BUTTON1_MASK) { if (drag_monitor_size.IsEmpty()) { // We can safely cache the monitor size for the duration of a drag. GdkScreen* screen = gtk_widget_get_screen(widget); int monitor = gdk_screen_get_monitor_at_point(screen, event->x_root, event->y_root); GdkRectangle geometry; gdk_screen_get_monitor_geometry(screen, monitor, &geometry); drag_monitor_size.SetSize(geometry.width, geometry.height); } // Check X and Y independently, as the user could be dragging into a corner. if (event->x == 0 && event->x_root == 0) { new_dragged_at_horizontal_edge = dragged_at_horizontal_edge_ - 1; } else if (widget->allocation.width - 1 == static_cast(event->x) && drag_monitor_size.width() - 1 == static_cast(event->x_root)) { new_dragged_at_horizontal_edge = dragged_at_horizontal_edge_ + 1; } if (event->y == 0 && event->y_root == 0) { new_dragged_at_vertical_edge = dragged_at_vertical_edge_ - 1; } else if (widget->allocation.height - 1 == static_cast(event->y) && drag_monitor_size.height() - 1 == static_cast(event->y_root)) { new_dragged_at_vertical_edge = dragged_at_vertical_edge_ + 1; } event->x_root += new_dragged_at_horizontal_edge; event->x += new_dragged_at_horizontal_edge; event->y_root += new_dragged_at_vertical_edge; event->y += new_dragged_at_vertical_edge; } else { // Clear whenever we get a non-drag mouse move. drag_monitor_size.SetSize(0, 0); } dragged_at_horizontal_edge_ = new_dragged_at_horizontal_edge; dragged_at_vertical_edge_ = new_dragged_at_vertical_edge; } void RenderWidgetHostViewGtk::Paint(const gfx::Rect& damage_rect) { // If the GPU process is rendering directly into the View, // call the compositor directly. RenderWidgetHost* render_widget_host = GetRenderWidgetHost(); if (render_widget_host->is_accelerated_compositing_active()) { host_->ScheduleComposite(); return; } GdkWindow* window = view_.get()->window; DCHECK(!about_to_validate_and_paint_); invalid_rect_ = damage_rect; about_to_validate_and_paint_ = true; BackingStoreX* backing_store = static_cast( host_->GetBackingStore(true)); // Calling GetBackingStore maybe have changed |invalid_rect_|... about_to_validate_and_paint_ = false; gfx::Rect paint_rect = gfx::Rect(0, 0, kMaxWindowWidth, kMaxWindowHeight); paint_rect = paint_rect.Intersect(invalid_rect_); if (backing_store) { // Only render the widget if it is attached to a window; there's a short // period where this object isn't attached to a window but hasn't been // Destroy()ed yet and it receives paint messages... if (window) { if (SkColorGetA(overlay_color_) == 0) { // In the common case, use XCopyArea. We don't draw more than once, so // we don't need to double buffer. backing_store->XShowRect(gfx::Point(0, 0), paint_rect, ui::GetX11WindowFromGtkWidget(view_.get())); } else { // If the grey blend is showing, we make two drawing calls. Use double // buffering to prevent flicker. Use CairoShowRect because XShowRect // shortcuts GDK's double buffering. We won't be able to draw outside // of |damage_rect|, so invalidate the difference between |paint_rect| // and |damage_rect|. if (paint_rect != damage_rect) { GdkRectangle extra_gdk_rect = paint_rect.Subtract(damage_rect).ToGdkRectangle(); gdk_window_invalidate_rect(window, &extra_gdk_rect, false); } GdkRectangle rect = { damage_rect.x(), damage_rect.y(), damage_rect.width(), damage_rect.height() }; gdk_window_begin_paint_rect(window, &rect); backing_store->CairoShowRect(damage_rect, GDK_DRAWABLE(window)); cairo_t* cr = gdk_cairo_create(window); gdk_cairo_rectangle(cr, &rect); SkColor overlay = SkColorSetA( overlay_color_, SkColorGetA(overlay_color_) * overlay_animation_.GetCurrentValue()); float r = SkColorGetR(overlay) / 255.; float g = SkColorGetG(overlay) / 255.; float b = SkColorGetB(overlay) / 255.; float a = SkColorGetA(overlay) / 255.; cairo_set_source_rgba(cr, r, g, b, a); cairo_fill(cr); cairo_destroy(cr); gdk_window_end_paint(window); } } if (!whiteout_start_time_.is_null()) { base::TimeDelta whiteout_duration = base::TimeTicks::Now() - whiteout_start_time_; UMA_HISTOGRAM_TIMES("MPArch.RWHH_WhiteoutDuration", whiteout_duration); // Reset the start time to 0 so that we start recording again the next // time the backing store is NULL... whiteout_start_time_ = base::TimeTicks(); } if (!tab_switch_paint_time_.is_null()) { base::TimeDelta tab_switch_paint_duration = base::TimeTicks::Now() - tab_switch_paint_time_; UMA_HISTOGRAM_TIMES("MPArch.RWH_TabSwitchPaintDuration", tab_switch_paint_duration); // Reset tab_switch_paint_time_ to 0 so future tab selections are // recorded. tab_switch_paint_time_ = base::TimeTicks(); } } else { if (window) gdk_window_clear(window); if (whiteout_start_time_.is_null()) whiteout_start_time_ = base::TimeTicks::Now(); } } void RenderWidgetHostViewGtk::ShowCurrentCursor() { // The widget may not have a window. If that's the case, abort mission. This // is the same issue as that explained above in Paint(). if (!view_.get()->window) return; // TODO(port): WebKit bug https://bugs.webkit.org/show_bug.cgi?id=16388 is // that calling gdk_window_set_cursor repeatedly is expensive. We should // avoid it here where possible. GdkCursor* gdk_cursor; if (current_cursor_.GetCursorType() == GDK_LAST_CURSOR) { // Use MOZ_CURSOR_SPINNING if we are showing the default cursor and // the page is loading. gdk_cursor = is_loading_ ? GetMozSpinningCursor() : NULL; } else { gdk_cursor = current_cursor_.GetNativeCursor(); } gdk_window_set_cursor(view_.get()->window, gdk_cursor); } void RenderWidgetHostViewGtk::CreatePluginContainer( gfx::PluginWindowHandle id) { plugin_container_manager_.CreatePluginContainer(id); } void RenderWidgetHostViewGtk::DestroyPluginContainer( gfx::PluginWindowHandle id) { plugin_container_manager_.DestroyPluginContainer(id); } void RenderWidgetHostViewGtk::SetVisuallyDeemphasized( const SkColor* color, bool animate) { // Do nothing unless |color| has changed, meaning |animate| is only // respected for the first call. if (color && (*color == overlay_color_)) return; overlay_color_ = color ? *color : 0; if (animate) { overlay_animation_.Reset(); overlay_animation_.Show(); } else { overlay_animation_.Reset(1.0); gtk_widget_queue_draw(view_.get()); } } bool RenderWidgetHostViewGtk::ContainsNativeView( gfx::NativeView native_view) const { // TODO(port) NOTREACHED() << "RenderWidgetHostViewGtk::ContainsNativeView not implemented."; return false; } void RenderWidgetHostViewGtk::AcceleratedCompositingActivated(bool activated) { GtkPreserveWindow* widget = reinterpret_cast(view_.get()); gtk_preserve_window_delegate_resize(widget, activated); } gfx::PluginWindowHandle RenderWidgetHostViewGtk::AcquireCompositingSurface() { GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance(); gfx::PluginWindowHandle surface = gfx::kNullPluginWindow; gfx::NativeViewId view_id = gfx::IdFromNativeView(GetNativeView()); if (!manager->GetPermanentXIDForId(&surface, view_id)) { DLOG(ERROR) << "Can't find XID for view id " << view_id; } else { accelerated_surface_acquired_ = true; } return surface; } void RenderWidgetHostViewGtk::ReleaseCompositingSurface( gfx::PluginWindowHandle surface) { GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance(); manager->ReleasePermanentXID(surface); accelerated_surface_acquired_ = false; } void RenderWidgetHostViewGtk::ForwardKeyboardEvent( const NativeWebKeyboardEvent& event) { if (!host_) return; EditCommands edit_commands; if (!event.skip_in_browser && key_bindings_handler_->Match(event, &edit_commands)) { host_->ForwardEditCommandsForNextKeyEvent(edit_commands); NativeWebKeyboardEvent copy_event(event); copy_event.match_edit_command = true; host_->ForwardKeyboardEvent(copy_event); return; } host_->ForwardKeyboardEvent(event); } void RenderWidgetHostViewGtk::AnimationEnded(const ui::Animation* animation) { gtk_widget_queue_draw(view_.get()); } void RenderWidgetHostViewGtk::AnimationProgressed( const ui::Animation* animation) { gtk_widget_queue_draw(view_.get()); } void RenderWidgetHostViewGtk::AnimationCanceled( const ui::Animation* animation) { gtk_widget_queue_draw(view_.get()); } // static RenderWidgetHostView* RenderWidgetHostView::GetRenderWidgetHostViewFromNativeView( gfx::NativeView widget) { gpointer user_data = g_object_get_data(G_OBJECT(widget), kRenderWidgetHostViewKey); return reinterpret_cast(user_data); }