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// 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 "views/controls/menu/menu_host_gtk.h"
#include <gdk/gdk.h>
#if defined(HAVE_XINPUT2) && defined(TOUCH_UI)
#include <gdk/gdkx.h>
#include <X11/extensions/XInput2.h>
#endif
#include "views/controls/menu/native_menu_host_delegate.h"
#if defined(HAVE_XINPUT2) && defined(TOUCH_UI)
#include "views/touchui/touch_factory.h"
#endif
namespace views {
////////////////////////////////////////////////////////////////////////////////
// MenuHostGtk, public:
MenuHostGtk::MenuHostGtk(internal::NativeMenuHostDelegate* delegate)
: did_input_grab_(false),
delegate_(delegate) {
}
MenuHostGtk::~MenuHostGtk() {
}
////////////////////////////////////////////////////////////////////////////////
// MenuHostGtk, NativeMenuHost implementation:
void MenuHostGtk::StartCapturing() {
DCHECK(!did_input_grab_);
// Release the current grab.
GtkWidget* current_grab_window = gtk_grab_get_current();
if (current_grab_window)
gtk_grab_remove(current_grab_window);
// Make sure all app mouse/keyboard events are targeted at us only.
SetMouseCapture();
// And do a grab. NOTE: we do this to ensure we get mouse/keyboard
// events from other apps, a grab done with gtk_grab_add doesn't get
// events from other apps.
GdkGrabStatus pointer_grab_status =
gdk_pointer_grab(window_contents()->window, FALSE,
static_cast<GdkEventMask>(
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK),
NULL, NULL, GDK_CURRENT_TIME);
GdkGrabStatus keyboard_grab_status =
gdk_keyboard_grab(window_contents()->window, FALSE,
GDK_CURRENT_TIME);
did_input_grab_ = pointer_grab_status == GDK_GRAB_SUCCESS &&
keyboard_grab_status == GDK_GRAB_SUCCESS;
DCHECK_EQ(GDK_GRAB_SUCCESS, pointer_grab_status);
DCHECK_EQ(GDK_GRAB_SUCCESS, keyboard_grab_status);
#if defined(HAVE_XINPUT2) && defined(TOUCH_UI)
::Window window = GDK_WINDOW_XID(window_contents()->window);
Display* display = GDK_WINDOW_XDISPLAY(window_contents()->window);
bool xi2grab = TouchFactory::GetInstance()->GrabTouchDevices(display, window);
did_input_grab_ = did_input_grab_ && xi2grab;
#endif
DCHECK(did_input_grab_);
// need keyboard grab.
}
NativeWidget* MenuHostGtk::AsNativeWidget() {
return this;
}
////////////////////////////////////////////////////////////////////////////////
// MenuHostGtk, WidgetGtk overrides:
void MenuHostGtk::InitNativeWidget(const Widget::InitParams& params) {
make_transient_to_parent();
WidgetGtk::InitNativeWidget(params);
// Make sure we get destroyed when the parent is destroyed.
gtk_window_set_destroy_with_parent(GTK_WINDOW(GetNativeView()), TRUE);
gtk_window_set_type_hint(GTK_WINDOW(GetNativeView()),
GDK_WINDOW_TYPE_HINT_MENU);
}
// TODO(beng): remove once MenuHost is-a Widget
RootView* MenuHostGtk::CreateRootView() {
return delegate_->CreateRootView();
}
bool MenuHostGtk::ShouldReleaseCaptureOnMouseReleased() const {
return delegate_->ShouldReleaseCaptureOnMouseRelease();
}
void MenuHostGtk::ReleaseMouseCapture() {
WidgetGtk::ReleaseMouseCapture();
if (did_input_grab_) {
did_input_grab_ = false;
gdk_pointer_ungrab(GDK_CURRENT_TIME);
gdk_keyboard_ungrab(GDK_CURRENT_TIME);
#if defined(HAVE_XINPUT2) && defined(TOUCH_UI)
TouchFactory::GetInstance()->UngrabTouchDevices(
GDK_WINDOW_XDISPLAY(window_contents()->window));
#endif
}
}
void MenuHostGtk::OnDestroy(GtkWidget* object) {
delegate_->OnNativeMenuHostDestroy();
WidgetGtk::OnDestroy(object);
}
void MenuHostGtk::HandleXGrabBroke() {
// Grab may already be release in ReleaseGrab.
if (did_input_grab_) {
did_input_grab_ = false;
delegate_->OnNativeMenuHostCancelCapture();
}
WidgetGtk::HandleXGrabBroke();
}
void MenuHostGtk::HandleGtkGrabBroke() {
// Grab can be broken by drag & drop, other menu or screen locker.
if (did_input_grab_) {
ReleaseMouseCapture();
delegate_->OnNativeMenuHostCancelCapture();
}
WidgetGtk::HandleGtkGrabBroke();
}
////////////////////////////////////////////////////////////////////////////////
// NativeMenuHost, public:
// static
NativeMenuHost* NativeMenuHost::CreateNativeMenuHost(
internal::NativeMenuHostDelegate* delegate) {
return new MenuHostGtk(delegate);
}
} // namespace views
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