blob: dad450ed2a59740e12e99fcc2e1bc8bdb16b2c32 [file] [log] [blame]
// Copyright (c) 2012 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 "content/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 "content/common/view_messages.h"
#include <cairo/cairo.h>
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <algorithm>
#include <string>
#include "base/command_line.h"
#include "base/debug/trace_event.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_offset_string_conversions.h"
#include "base/utf_string_conversions.h"
#include "content/browser/accessibility/browser_accessibility_gtk.h"
#include "content/browser/renderer_host/backing_store_gtk.h"
#include "content/browser/renderer_host/gtk_im_context_wrapper.h"
#include "content/browser/renderer_host/gtk_key_bindings_handler.h"
#include "content/browser/renderer_host/gtk_window_utils.h"
#include "content/browser/renderer_host/render_view_host_delegate.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/common/content_switches.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebScreenInfo.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/gtk/WebInputEventFactory.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/x11/WebScreenInfoFactory.h"
#include "ui/base/gtk/gtk_compat.h"
#include "ui/base/text/text_elider.h"
#include "ui/base/x/x11_util.h"
#include "ui/gfx/gtk_native_view_id_manager.h"
#include "ui/gfx/gtk_preserve_window.h"
#include "webkit/glue/webaccessibility.h"
#include "webkit/glue/webcursor_gtk_data.h"
#include "webkit/plugins/npapi/webplugin.h"
namespace {
// Paint rects on Linux are bounded by the maximum size of a shared memory
// region. By default that's 32MB, but many distros increase it significantly
// (i.e. to 256MB).
//
// We fetch the maximum value from /proc/sys/kernel/shmmax at runtime and, if
// we exceed that, then we limit the height of the paint rect in the renderer.
//
// These constants are here to ensure that, in the event that we exceed it, we
// end up with something a little more square. Previously we had 4000x4000, but
// people's monitor setups are actually exceeding that these days.
const int kMaxWindowWidth = 10000;
const int kMaxWindowHeight = 10000;
// See WebInputEventFactor.cpp for a reason for this being the default
// scroll size for linux.
const float kDefaultScrollPixelsPerTick = 160.0f / 3.0f;
const GdkColor kBGColor =
#if defined(NDEBUG)
{ 0, 0xff * 257, 0xff * 257, 0xff * 257 };
#else
{ 0, 0x00 * 257, 0xff * 257, 0x00 * 257 };
#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;
}
bool MovedToCenter(const WebKit::WebMouseEvent& mouse_event,
const gfx::Point& center) {
return mouse_event.globalX == center.x() &&
mouse_event.globalY == center.y();
}
} // namespace
using content::NativeWebKeyboardEvent;
using content::RenderWidgetHostImpl;
using content::RenderWidgetHostView;
using content::RenderWidgetHostViewPort;
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 AtkObject* GetAccessible(void* userdata) {
return (static_cast<RenderWidgetHostViewGtk*>(userdata))->
GetAccessible();
}
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);
gtk_widget_modify_bg(widget, GTK_STATE_NORMAL, &kBGColor);
// 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_STRUCTURE_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_can_focus(widget, TRUE);
g_signal_connect(widget, "expose-event",
G_CALLBACK(OnExposeEvent), host_view);
g_signal_connect(widget, "realize",
G_CALLBACK(OnRealize), host_view);
g_signal_connect(widget, "configure-event",
G_CALLBACK(OnConfigureEvent), 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
// WebContentsView which handles zoom events.
g_signal_connect_after(widget, "scroll-event",
G_CALLBACK(OnMouseScrollEvent), host_view);
// Route calls to get_accessible to the view.
gtk_preserve_window_set_accessible_factory(
GTK_PRESERVE_WINDOW(widget), GetAccessible, 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 OnRealize(GtkWidget* widget,
RenderWidgetHostViewGtk* host_view) {
// Use GtkSignalRegistrar to register events on a widget we don't
// control the lifetime of, auto disconnecting at our end of our life.
host_view->signals_.Connect(gtk_widget_get_toplevel(widget),
"configure-event",
G_CALLBACK(OnConfigureEvent), host_view);
return FALSE;
}
static gboolean OnConfigureEvent(GtkWidget* widget,
GdkEventConfigure* event,
RenderWidgetHostViewGtk* host_view) {
host_view->MarkCachedWidgetCenterStale();
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 if (host_view->host_ &&
host_view->host_->KeyPressListenersHandleEvent(event)) {
return TRUE;
} 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();
RenderWidgetHostImpl* host =
RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
host->GotFocus();
host->SetActive(true);
// 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(gtk_widget_get_window(widget), NULL);
// If we are showing a context menu, maintain the illusion that webkit has
// focus.
if (!host_view->IsShowingContextMenu()) {
RenderWidgetHostImpl* host =
RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
host->SetActive(false);
host->Blur();
}
// Prevents us from stealing input context focus in OnGrabNotify() handler.
host_view->was_imcontext_focused_before_grab_ = false;
// Disable the GtkIMContext object.
host_view->im_context_->OnFocusOut();
host_view->set_last_mouse_down(NULL);
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_imcontext_focused_before_grab_)
host_view->im_context_->OnFocusIn();
} else {
host_view->was_imcontext_focused_before_grab_ =
host_view->im_context_->is_focused();
if (host_view->was_imcontext_focused_before_grab_) {
gdk_window_set_cursor(gtk_widget_get_window(widget), NULL);
host_view->im_context_->OnFocusOut();
}
}
}
static gboolean OnButtonPressReleaseEvent(
GtkWidget* widget,
GdkEventButton* event,
RenderWidgetHostViewGtk* host_view) {
if (event->type != GDK_BUTTON_RELEASE)
host_view->set_last_mouse_down(event);
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.
if (event->type != GDK_BUTTON_RELEASE)
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<GdkEvent*>(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.
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
bool click_in_popup = x >= 0 && y >= 0 && x < allocation.width &&
y < 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;
RenderWidgetHostImpl* widget_host =
RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
if (widget_host)
widget_host->ForwardMouseEvent(WebInputEventFactory::mouseEvent(event));
// Although we did handle the mouse event, we need to let other handlers
// run (in particular the one installed by WebContentsViewGtk).
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<GdkEvent*>(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);
WebKit::WebMouseEvent mouse_event =
WebInputEventFactory::mouseEvent(event);
if (host_view->mouse_locked_) {
gfx::Point center = host_view->GetWidgetCenter();
bool moved_to_center = MovedToCenter(mouse_event, center);
if (moved_to_center)
host_view->mouse_has_been_warped_to_new_center_ = true;
host_view->ModifyEventMovementAndCoords(&mouse_event);
if (!moved_to_center &&
(mouse_event.movementX || mouse_event.movementY)) {
GdkDisplay* display = gtk_widget_get_display(widget);
GdkScreen* screen = gtk_widget_get_screen(widget);
gdk_display_warp_pointer(display, screen, center.x(), center.y());
if (host_view->mouse_has_been_warped_to_new_center_)
RenderWidgetHostImpl::From(
host_view->GetRenderWidgetHost())->ForwardMouseEvent(mouse_event);
}
} else { // Mouse is not locked.
host_view->ModifyEventMovementAndCoords(&mouse_event);
RenderWidgetHostImpl::From(
host_view->GetRenderWidgetHost())->ForwardMouseEvent(mouse_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)) {
WebKit::WebMouseEvent mouse_event =
WebInputEventFactory::mouseEvent(event);
host_view->ModifyEventMovementAndCoords(&mouse_event);
// When crossing out and back into a render view the movement values
// must represent the instantaneous movement of the mouse, not the jump
// from the exit to re-entry point.
mouse_event.movementX = 0;
mouse_event.movementY = 0;
RenderWidgetHostImpl::From(
host_view->GetRenderWidgetHost())->ForwardMouseEvent(mouse_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<float>(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 WebContentsView 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);
}
RenderWidgetHostImpl::From(
host_view->GetRenderWidgetHost())->ForwardWheelEvent(web_event);
return FALSE;
}
DISALLOW_IMPLICIT_CONSTRUCTORS(RenderWidgetHostViewGtkWidget);
};
RenderWidgetHostViewGtk::RenderWidgetHostViewGtk(
content::RenderWidgetHost* widget_host)
: host_(RenderWidgetHostImpl::From(widget_host)),
about_to_validate_and_paint_(false),
is_hidden_(false),
is_loading_(false),
parent_(NULL),
is_popup_first_mouse_release_(true),
was_imcontext_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),
compositing_surface_(gfx::kNullPluginWindow),
last_mouse_down_(NULL) {
host_->SetView(this);
}
RenderWidgetHostViewGtk::~RenderWidgetHostViewGtk() {
UnlockMouse();
set_last_mouse_down(NULL);
view_.Destroy();
}
void RenderWidgetHostViewGtk::InitAsChild(
gfx::NativeView parent_view) {
DoSharedInit();
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);
// Grab all input for the app. If a click lands outside the bounds of the
// popup, WebKit will notice and destroy us. The underlying X window needs to
// be created and mapped by the above code before we can grab the input
// devices.
if (NeedsInputGrab()) {
// If our parent is in a widget hierarchy that ends with a window, add
// ourselves to the same window group to make sure that our GTK grab
// covers it.
GtkWidget* toplevel = gtk_widget_get_toplevel(parent_);
if (toplevel &&
GTK_WIDGET_TOPLEVEL(toplevel) &&
GTK_IS_WINDOW(toplevel)) {
gtk_window_group_add_window(
gtk_window_get_group(GTK_WINDOW(toplevel)), window);
}
// Install an application-level GTK grab to make sure that we receive all of
// the app's input.
gtk_grab_add(view_.get());
// We need to install 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();
if (do_x_grab_) {
// Install the grab on behalf our parent window if it and all of its
// ancestors are mapped; otherwise, just use ourselves (maybe we're being
// shown on behalf of an inactive tab).
GdkWindow* grab_window = gtk_widget_get_window(parent_);
if (!grab_window || !gdk_window_is_viewable(grab_window))
grab_window = gtk_widget_get_window(view_.get());
gdk_pointer_grab(
grab_window,
TRUE, // Only events outside of the window are reported with
// respect to |parent_->window|.
static_cast<GdkEventMask>(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(grab_window, TRUE, GDK_CURRENT_TIME);
}
}
}
void RenderWidgetHostViewGtk::InitAsFullscreen(
RenderWidgetHostView* /*reference_host_view*/) {
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);
}
content::RenderWidgetHost*
RenderWidgetHostViewGtk::GetRenderWidgetHost() const {
return host_;
}
void RenderWidgetHostViewGtk::DidBecomeSelected() {
if (!is_hidden_)
return;
if (web_contents_switch_paint_time_.is_null())
web_contents_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.
host_->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);
}
// 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() const {
return view_.get();
}
gfx::NativeViewId RenderWidgetHostViewGtk::GetNativeViewId() const {
return GtkNativeViewManager::GetInstance()->GetIdForWidget(view_.get());
}
gfx::NativeViewAccessible RenderWidgetHostViewGtk::GetNativeViewAccessible() {
NOTIMPLEMENTED();
return NULL;
}
void RenderWidgetHostViewGtk::MovePluginWindows(
const std::vector<webkit::npapi::WebPluginGeometry>& 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() const {
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() {
return gtk_widget_get_visible(view_.get());
}
gfx::Rect RenderWidgetHostViewGtk::GetViewBounds() const {
GdkWindow* gdk_window = gtk_widget_get_window(view_.get());
if (!gdk_window)
return gfx::Rect(requested_size_);
GdkRectangle window_rect;
gdk_window_get_origin(gdk_window, &window_rect.x, &window_rect.y);
return gfx::Rect(window_rect.x, window_rect.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::TextInputStateChanged(
ui::TextInputType type,
bool can_compose_inline) {
im_context_->UpdateInputMethodState(type, can_compose_inline);
}
void RenderWidgetHostViewGtk::ImeCancelComposition() {
im_context_->CancelComposition();
}
void RenderWidgetHostViewGtk::DidUpdateBackingStore(
const gfx::Rect& scroll_rect, int scroll_dx, int scroll_dy,
const std::vector<gfx::Rect>& copy_rects) {
TRACE_EVENT0("ui::gtk", "RenderWidgetHostViewGtk::DidUpdateBackingStore");
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 (compositing_surface_ != gfx::kNullPluginWindow) {
GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance();
manager->ReleasePermanentXID(compositing_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 string16& 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 =
ui::TruncateString(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());
}
}
void RenderWidgetHostViewGtk::SelectionChanged(const string16& text,
size_t offset,
const ui::Range& range) {
content::RenderWidgetHostViewBase::SelectionChanged(text, offset, range);
if (text.empty() || range.is_empty())
return;
size_t pos = range.GetMin() - offset;
size_t n = range.length();
DCHECK(pos + n <= text.length()) << "The text can not fully cover range.";
if (pos >= text.length()) {
NOTREACHED() << "The text can not cover range.";
return;
}
std::string utf8_selection = UTF16ToUTF8(text.substr(pos, n));
GtkClipboard* x_clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
gtk_clipboard_set_text(
x_clipboard, utf8_selection.c_str(), utf8_selection.length());
}
void RenderWidgetHostViewGtk::SelectionBoundsChanged(
const gfx::Rect& start_rect,
const gfx::Rect& end_rect) {
im_context_->UpdateCaretBounds(start_rect.Union(end_rect));
}
GdkEventButton* RenderWidgetHostViewGtk::GetLastMouseDown() {
return last_mouse_down_;
}
gfx::NativeView RenderWidgetHostViewGtk::BuildInputMethodsGtkMenu() {
return im_context_->BuildInputMethodsGtkMenu();
}
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));
plugin_container_manager_.set_host_widget(view_.get());
key_bindings_handler_.reset(new GtkKeyBindingsHandler(view_.get()));
}
void RenderWidgetHostViewGtk::DoPopupOrFullscreenInit(GtkWindow* window,
const gfx::Rect& bounds) {
requested_size_.SetSize(std::min(bounds.width(), kMaxWindowWidth),
std::min(bounds.height(), kMaxWindowHeight));
host_->WasResized();
// Don't set the size when we're going fullscreen. This can confuse the
// window manager into thinking we're resizing a fullscreen window and
// therefore not fullscreen anymore.
if (!is_fullscreen_) {
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) {
gint depth = gdk_visual_get_depth(gtk_widget_get_visual(view_.get()));
return new BackingStoreGtk(host_, size,
ui::GetVisualFromGtkWidget(view_.get()),
depth);
}
void RenderWidgetHostViewGtk::CopyFromCompositingSurface(
const gfx::Size& size,
skia::PlatformCanvas* output,
base::Callback<void(bool)> callback) {
// TODO(mazda): Implement this.
NOTIMPLEMENTED();
callback.Run(false);
}
void RenderWidgetHostViewGtk::AcceleratedSurfaceBuffersSwapped(
const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
int gpu_host_id) {
RenderWidgetHostImpl::AcknowledgeSwapBuffers(params.route_id, gpu_host_id);
}
void RenderWidgetHostViewGtk::AcceleratedSurfacePostSubBuffer(
const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
int gpu_host_id) {
RenderWidgetHostImpl::AcknowledgePostSubBuffer(params.route_id, gpu_host_id);
}
void RenderWidgetHostViewGtk::AcceleratedSurfaceSuspend() {
}
bool RenderWidgetHostViewGtk::HasAcceleratedSurface(
const gfx::Size& desired_size) {
// TODO(jbates) Implement this so this view can use GetBackingStore for both
// software and GPU frames. Defaulting to false just makes GetBackingStore
// only useable for software frames.
return false;
}
void RenderWidgetHostViewGtk::SetBackground(const SkBitmap& background) {
content::RenderWidgetHostViewBase::SetBackground(background);
host_->Send(new ViewMsg_SetBackground(host_->GetRoutingID(), 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.
CR_DEFINE_STATIC_LOCAL(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);
}
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
// 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 (allocation.width - 1 == static_cast<gint>(event->x) &&
drag_monitor_size.width() - 1 == static_cast<gint>(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 (allocation.height - 1 == static_cast<gint>(event->y) &&
drag_monitor_size.height() - 1 == static_cast<gint>(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) {
TRACE_EVENT0("ui::gtk", "RenderWidgetHostViewGtk::Paint");
// If the GPU process is rendering directly into the View,
// call the compositor directly.
RenderWidgetHostImpl* render_widget_host =
RenderWidgetHostImpl::From(GetRenderWidgetHost());
if (render_widget_host->is_accelerated_compositing_active()) {
host_->ScheduleComposite();
return;
}
GdkWindow* window = gtk_widget_get_window(view_.get());
DCHECK(!about_to_validate_and_paint_);
invalid_rect_ = damage_rect;
about_to_validate_and_paint_ = true;
// If the size of our canvas is (0,0), then we don't want to block here. We
// are doing one of our first paints and probably have animations going on.
bool force_create = !host_->empty();
BackingStoreGtk* backing_store = static_cast<BackingStoreGtk*>(
host_->GetBackingStore(force_create));
// 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) {
backing_store->XShowRect(gfx::Point(0, 0),
paint_rect, ui::GetX11WindowFromGtkWidget(view_.get()));
}
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 (!web_contents_switch_paint_time_.is_null()) {
base::TimeDelta web_contents_switch_paint_duration =
base::TimeTicks::Now() - web_contents_switch_paint_time_;
UMA_HISTOGRAM_TIMES("MPArch.RWH_TabSwitchPaintDuration",
web_contents_switch_paint_duration);
// Reset web_contents_switch_paint_time_ to 0 so future tab selections are
// recorded.
web_contents_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 (!gtk_widget_get_window(view_.get()))
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(gtk_widget_get_window(view_.get()), 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::ProcessTouchAck(
WebKit::WebInputEvent::Type type, bool processed) {
}
void RenderWidgetHostViewGtk::SetHasHorizontalScrollbar(
bool has_horizontal_scrollbar) {
}
void RenderWidgetHostViewGtk::SetScrollOffsetPinning(
bool is_pinned_to_left, bool is_pinned_to_right) {
}
void RenderWidgetHostViewGtk::OnAcceleratedCompositingStateChange() {
bool activated = host_->is_accelerated_compositing_active();
GtkPreserveWindow* widget = reinterpret_cast<GtkPreserveWindow*>(view_.get());
gtk_preserve_window_delegate_resize(widget, activated);
}
void RenderWidgetHostViewGtk::GetScreenInfo(WebKit::WebScreenInfo* results) {
GdkWindow* gdk_window = gtk_widget_get_window(view_.get());
if (!gdk_window) {
GdkDisplay* display = gdk_display_get_default();
gdk_window = gdk_display_get_default_group(display);
}
if (!gdk_window)
return;
content::GetScreenInfoFromNativeWindow(gdk_window, results);
}
gfx::Rect RenderWidgetHostViewGtk::GetRootWindowBounds() {
GtkWidget* toplevel = gtk_widget_get_toplevel(view_.get());
if (!toplevel)
return gfx::Rect();
GdkRectangle frame_extents;
GdkWindow* gdk_window = gtk_widget_get_window(toplevel);
if (!gdk_window)
return gfx::Rect();
gdk_window_get_frame_extents(gdk_window, &frame_extents);
return gfx::Rect(frame_extents.x, frame_extents.y,
frame_extents.width, frame_extents.height);
}
gfx::GLSurfaceHandle RenderWidgetHostViewGtk::GetCompositingSurface() {
if (compositing_surface_ == gfx::kNullPluginWindow) {
GtkNativeViewManager* manager = GtkNativeViewManager::GetInstance();
gfx::NativeViewId view_id = GetNativeViewId();
if (!manager->GetPermanentXIDForId(&compositing_surface_, view_id)) {
DLOG(ERROR) << "Can't find XID for view id " << view_id;
}
}
return gfx::GLSurfaceHandle(compositing_surface_, true);
}
bool RenderWidgetHostViewGtk::LockMouse() {
if (mouse_locked_)
return true;
mouse_locked_ = true;
// Release any current grab.
GtkWidget* current_grab_window = gtk_grab_get_current();
if (current_grab_window) {
gtk_grab_remove(current_grab_window);
LOG(WARNING) << "Locking Mouse with gdk_pointer_grab, "
<< "but had to steal grab from another window";
}
GtkWidget* widget = view_.get();
GdkWindow* window = gtk_widget_get_window(widget);
GdkCursor* cursor = gdk_cursor_new(GDK_BLANK_CURSOR);
GdkGrabStatus grab_status =
gdk_pointer_grab(window,
FALSE, // owner_events
static_cast<GdkEventMask>(
GDK_POINTER_MOTION_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK),
window, // confine_to
cursor,
GDK_CURRENT_TIME);
if (grab_status != GDK_GRAB_SUCCESS) {
LOG(WARNING) << "Failed to grab pointer for LockMouse. "
<< "gdk_pointer_grab returned: " << grab_status;
mouse_locked_ = false;
return false;
}
// Clear the tooltip window.
SetTooltipText(string16());
// Ensure that the widget center location will be relevant for this mouse
// lock session. It is updated whenever the window geometry moves
// but may be out of date due to switching tabs.
MarkCachedWidgetCenterStale();
return true;
}
void RenderWidgetHostViewGtk::UnlockMouse() {
if (!mouse_locked_)
return;
mouse_locked_ = false;
GtkWidget* widget = view_.get();
GdkDisplay* display = gtk_widget_get_display(widget);
GdkScreen* screen = gtk_widget_get_screen(widget);
gdk_display_pointer_ungrab(display, GDK_CURRENT_TIME);
gdk_display_warp_pointer(display, screen,
unlocked_global_mouse_position_.x(),
unlocked_global_mouse_position_.y());
if (host_)
host_->LostMouseLock();
}
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_->Send(new ViewMsg_SetEditCommandsForNextKeyEvent(
host_->GetRoutingID(), edit_commands));
NativeWebKeyboardEvent copy_event(event);
copy_event.match_edit_command = true;
host_->ForwardKeyboardEvent(copy_event);
return;
}
host_->ForwardKeyboardEvent(event);
}
bool RenderWidgetHostViewGtk::RetrieveSurrounding(std::string* text,
size_t* cursor_index) {
if (!selection_range_.IsValid())
return false;
size_t offset = selection_range_.GetMin() - selection_text_offset_;
DCHECK(offset <= selection_text_.length());
if (offset == selection_text_.length()) {
*text = UTF16ToUTF8(selection_text_);
*cursor_index = text->length();
return true;
}
*text = UTF16ToUTF8AndAdjustOffset(
base::StringPiece16(selection_text_), &offset);
if (offset == string16::npos) {
NOTREACHED() << "Invalid offset in UTF16 string.";
return false;
}
*cursor_index = offset;
return true;
}
void RenderWidgetHostViewGtk::set_last_mouse_down(GdkEventButton* event) {
GdkEventButton* temp = NULL;
if (event) {
temp = reinterpret_cast<GdkEventButton*>(
gdk_event_copy(reinterpret_cast<GdkEvent*>(event)));
}
if (last_mouse_down_)
gdk_event_free(reinterpret_cast<GdkEvent*>(last_mouse_down_));
last_mouse_down_ = temp;
}
void RenderWidgetHostViewGtk::MarkCachedWidgetCenterStale() {
widget_center_valid_ = false;
mouse_has_been_warped_to_new_center_ = false;
}
gfx::Point RenderWidgetHostViewGtk::GetWidgetCenter() {
if (widget_center_valid_)
return widget_center_;
GdkWindow* window = gtk_widget_get_window(view_.get());
gint window_x = 0;
gint window_y = 0;
gdk_window_get_origin(window, &window_x, &window_y);
gint window_w = gdk_window_get_width(window);
gint window_h = gdk_window_get_height(window);
widget_center_.SetPoint(window_x + window_w / 2,
window_y + window_h / 2);
widget_center_valid_ = true;
return widget_center_;
}
void RenderWidgetHostViewGtk::ModifyEventMovementAndCoords(
WebKit::WebMouseEvent* event) {
// Movement is computed by taking the difference of the new cursor position
// and the previous. Under mouse lock the cursor will be warped back to the
// center so that we are not limited by clipping boundaries.
// We do not measure movement as the delta from cursor to center because
// we may receive more mouse movement events before our warp has taken
// effect.
event->movementX = event->globalX - global_mouse_position_.x();
event->movementY = event->globalY - global_mouse_position_.y();
global_mouse_position_.SetPoint(event->globalX, event->globalY);
// Under mouse lock, coordinates of mouse are locked to what they were when
// mouse lock was entered.
if (mouse_locked_) {
event->x = unlocked_mouse_position_.x();
event->y = unlocked_mouse_position_.y();
event->windowX = unlocked_mouse_position_.x();
event->windowY = unlocked_mouse_position_.y();
event->globalX = unlocked_global_mouse_position_.x();
event->globalY = unlocked_global_mouse_position_.y();
} else {
unlocked_mouse_position_.SetPoint(event->windowX, event->windowY);
unlocked_global_mouse_position_.SetPoint(event->globalX, event->globalY);
}
}
////////////////////////////////////////////////////////////////////////////////
// RenderWidgetHostView, public:
// static
RenderWidgetHostView* RenderWidgetHostView::CreateViewForWidget(
content::RenderWidgetHost* widget) {
return new RenderWidgetHostViewGtk(widget);
}
// static
void content::RenderWidgetHostViewPort::GetDefaultScreenInfo(
WebKit::WebScreenInfo* results) {
GdkWindow* gdk_window =
gdk_display_get_default_group(gdk_display_get_default());
content::GetScreenInfoFromNativeWindow(gdk_window, results);
}
void RenderWidgetHostViewGtk::SetAccessibilityFocus(int acc_obj_id) {
if (!host_)
return;
host_->AccessibilitySetFocus(acc_obj_id);
}
void RenderWidgetHostViewGtk::AccessibilityDoDefaultAction(int acc_obj_id) {
if (!host_)
return;
host_->AccessibilityDoDefaultAction(acc_obj_id);
}
void RenderWidgetHostViewGtk::AccessibilityScrollToMakeVisible(
int acc_obj_id, gfx::Rect subfocus) {
if (!host_)
return;
host_->AccessibilityScrollToMakeVisible(acc_obj_id, subfocus);
}
void RenderWidgetHostViewGtk::AccessibilityScrollToPoint(
int acc_obj_id, gfx::Point point) {
if (!host_)
return;
host_->AccessibilityScrollToPoint(acc_obj_id, point);
}
void RenderWidgetHostViewGtk::AccessibilitySetTextSelection(
int acc_obj_id, int start_offset, int end_offset) {
if (!host_)
return;
host_->AccessibilitySetTextSelection(acc_obj_id, start_offset, end_offset);
}
void RenderWidgetHostViewGtk::OnAccessibilityNotifications(
const std::vector<AccessibilityHostMsg_NotificationParams>& params) {
if (!browser_accessibility_manager_.get()) {
GtkWidget* parent = gtk_widget_get_parent(view_.get());
browser_accessibility_manager_.reset(
BrowserAccessibilityManager::CreateEmptyDocument(
parent, static_cast<WebAccessibility::State>(0), this));
}
browser_accessibility_manager_->OnAccessibilityNotifications(params);
}
AtkObject* RenderWidgetHostViewGtk::GetAccessible() {
RenderWidgetHostImpl::From(GetRenderWidgetHost())->
SetAccessibilityMode(AccessibilityModeComplete);
if (!browser_accessibility_manager_.get()) {
GtkWidget* parent = gtk_widget_get_parent(view_.get());
browser_accessibility_manager_.reset(
BrowserAccessibilityManager::CreateEmptyDocument(
parent, static_cast<WebAccessibility::State>(0), this));
}
BrowserAccessibilityGtk* root =
browser_accessibility_manager_->GetRoot()->ToBrowserAccessibilityGtk();
atk_object_set_role(root->GetAtkObject(), ATK_ROLE_HTML_CONTAINER);
return root->GetAtkObject();
}