touch: Always expect XInput2 availability.

views/widget/native_widget_gtk.cc

 // 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/widget/native_widget_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #include <X11/extensions/shape.h>
 #include <X11/Xatom.h>
@@ skipping 25 matching lines @@
 #include "views/widget/drop_target_gtk.h"
 #include "views/widget/gtk_views_fixed.h"
 #include "views/widget/gtk_views_window.h"
 #include "views/widget/native_widget_views.h"
 #include "views/widget/root_view.h"
 #include "views/widget/widget_delegate.h"
 #include "views/window/hit_test.h"
 
 #if defined(TOUCH_UI)
 #include "views/widget/tooltip_manager_views.h"
-#if defined(HAVE_XINPUT2)
-#include <gdk/gdkx.h>
-
-#include "ui/gfx/gtk_util.h"
 #include "views/touchui/touch_factory.h"
-#endif
 #else
 #include "views/widget/tooltip_manager_gtk.h"
 #endif
 
 #if defined(HAVE_IBUS)
 #include "views/ime/input_method_ibus.h"
 #endif
 
 using ui::OSExchangeData;
 using ui::OSExchangeDataProviderGtk;
@@ skipping 310 matching lines @@
       transient_to_parent_(false),
       got_initial_focus_in_(false),
       has_focus_(false),
       always_on_top_(false),
       is_double_buffered_(false),
       should_handle_menu_key_release_(false),
       dragged_view_(NULL),
       painted_(false),
       has_mouse_grab_(false),
       has_keyboard_grab_(false) {
-#if defined(TOUCH_UI) && defined(HAVE_XINPUT2)
+#if defined(TOUCH_UI)
   // Make sure the touch factory is initialized so that it can setup XInput2 for
   // the widget.
   TouchFactory::GetInstance();
 #endif
   static bool installed_message_loop_observer = false;
   if (!installed_message_loop_observer) {
     installed_message_loop_observer = true;
     MessageLoopForUI* loop = MessageLoopForUI::current();
     if (loop)
       loop->AddObserver(DropObserver::GetInstance());
@@ skipping 519 matching lines @@
       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);
   // NOTE: technically grab may fail. We may want to try and continue on in that
   // case.
   DCHECK_EQ(GDK_GRAB_SUCCESS, pointer_grab_status);
   has_mouse_grab_ = pointer_grab_status == GDK_GRAB_SUCCESS;
 
-#if defined(HAVE_XINPUT2) && defined(TOUCH_UI)
+#if 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);
   has_mouse_grab_ = has_mouse_grab_ && xi2grab;
 #endif
 }
 
 void NativeWidgetGtk::ReleaseMouseCapture() {
   if (HasMouseCapture())
     gtk_grab_remove(window_contents_);
   if (has_mouse_grab_) {
     has_mouse_grab_ = false;
     gdk_pointer_ungrab(GDK_CURRENT_TIME);
     gdk_keyboard_ungrab(GDK_CURRENT_TIME);
-#if defined(HAVE_XINPUT2) && defined(TOUCH_UI)
+#if defined(TOUCH_UI)
     TouchFactory::GetInstance()->UngrabTouchDevices(
         GDK_WINDOW_XDISPLAY(window_contents()->window));
 #endif
     delegate_->OnMouseCaptureLost();
   }
 }
 
 bool NativeWidgetGtk::HasMouseCapture() const {
   return has_mouse_grab_;
 }
@@ skipping 352 matching lines @@
   // 2) widget_ is not drawable (mapped and visible)
   // 3) If it's never painted before. The first expose event will
   // paint the area that has to be painted.
   if (widget_ && GTK_WIDGET_DRAWABLE(widget_) && painted_) {
     gtk_widget_queue_draw_area(widget_, rect.x(), rect.y(), rect.width(),
                                rect.height());
   }
 }
 
 void NativeWidgetGtk::SetCursor(gfx::NativeCursor cursor) {
-#if defined(TOUCH_UI) && defined(HAVE_XINPUT2)
+#if defined(TOUCH_UI)
   if (TouchFactory::GetInstance()->keep_mouse_cursor())
     cursor = gfx::GetCursor(GDK_ARROW);
   else if (!TouchFactory::GetInstance()->is_cursor_visible())
     cursor = gfx::GetCursor(GDK_BLANK_CURSOR);
 #endif
   // |window_contents_| is placed on top of |widget_|. So the cursor needs to be
   // set on |window_contents_| instead of |widget_|.
   if (window_contents_)
     gdk_window_set_cursor(window_contents_->window, cursor);
 }
@@ skipping 910 matching lines @@
     button_pressed = event->type == GDK_BUTTON_PRESS ||
         event->type == GDK_2BUTTON_PRESS ||
         event->type == GDK_3BUTTON_PRESS;
     gdk_event_free(event);
   }
   return button_pressed;
 }
 
 }  // namespace internal
 }  // namespace views