Implements Touch calibrator controller and a skeleton for touch calibrator view.

chrome/browser/chromeos/display/touch_calibrator/touch_calibrator_view.cc

+// Copyright 2016 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/chromeos/display/touch_calibrator/touch_calibrator_view.h"
+
+#include "ash/display/window_tree_host_manager.h"
+#include "ash/public/cpp/shell_window_ids.h"
+#include "ash/shell.h"
+#include "ui/aura/window.h"
+#include "ui/gfx/canvas.h"
+#include "ui/views/widget/widget.h"
+
+namespace chromeos {
+
+namespace {
+
+constexpr char kWidgetName[] = "TouchCalibratorOverlay";
+
+// Returns the initialization params for the widget that contains the touch
+// calibrator view.
+views::Widget::InitParams GetWidgetParams(aura::Window* root_window) {
+  views::Widget::InitParams params;
+  params.type = views::Widget::InitParams::TYPE_WINDOW_FRAMELESS;
+  params.name = kWidgetName;
+  params.keep_on_top = true;
+  params.accept_events = true;
+  params.activatable = views::Widget::InitParams::ACTIVATABLE_NO;
+  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
+  params.parent = ash::Shell::GetContainer(
+      root_window, ash::kShellWindowId_OverlayContainer);
+  return params;
+}
+
+}  // namespace
+
+TouchCalibratorView::TouchCalibratorView(const display::Display& target_display,
+                                         bool is_primary_view)
+    : display_(target_display), is_primary_view_(is_primary_view) {
+  aura::Window* root = ash::Shell::GetInstance()
+                           ->window_tree_host_manager()
+                           ->GetRootWindowForDisplayId(display_.id());
+  widget_.reset(new views::Widget);
+  widget_->Init(GetWidgetParams(root));
+  widget_->Show();

[xiyuan, 2016/12/22 19:23:30]

nit: move Show() after SetcontentsView and SetBounds ?

[malaykeshav, 2016/12/22 20:17:01]

done

+  widget_->SetContentsView(this);
+  widget_->SetBounds(display_.bounds());
+  set_owned_by_client();
+}
+
+TouchCalibratorView::~TouchCalibratorView() {
+  state_ = UNKNOWN;
+  widget_->Hide();
+}
+
+void TouchCalibratorView::OnPaint(gfx::Canvas* canvas) {
+  OnPaintBackground(canvas);
+}
+
+void TouchCalibratorView::OnPaintBackground(gfx::Canvas* canvas) {}
+
+void TouchCalibratorView::AnimationProgressed(const gfx::Animation* animation) {
+}
+
+void TouchCalibratorView::AnimationCanceled(const gfx::Animation* animation) {
+  AnimationEnded(animation);
+}
+
+void TouchCalibratorView::AnimationEnded(const gfx::Animation* animation) {}
+
+void TouchCalibratorView::AdvanceToNextState() {}
+
+bool TouchCalibratorView::GetDisplayPointLocation(gfx::Point* location) {
+  if (!is_primary_view_)
+    return false;
+  return false;
+}
+
+void TouchCalibratorView::SkipToFinalState() {}
+
+}  // namespace chromeos