Refactor VR Shell Input. Locks input to click/scroll targets.

chrome/browser/android/vr_shell/ui_elements/ui_element.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/android/vr_shell/ui_elements/ui_element.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/time/time.h"
@@ skipping 56 matching lines @@
 const vr::Mat4f& WorldRectangle::TransformMatrix() const {
   return transform_.to_world;
 }
 
 gfx::Point3F WorldRectangle::GetCenter() const {
   const gfx::Point3F kOrigin(0.0f, 0.0f, 0.0f);
   return kOrigin + vr::GetTranslation(transform_.to_world);
 }
 
 gfx::PointF WorldRectangle::GetUnitRectangleCoordinates(
-    const gfx::Point3F& world_point) {
+    const gfx::Point3F& world_point) const {
   // TODO(acondor): Simplify the math in this function.
   const vr::Mat4f& transform = transform_.to_world;
   gfx::Vector3dF origin =
       vr::MatrixVectorMul(transform, gfx::Vector3dF(0, 0, 0));
   gfx::Vector3dF x_axis =
       vr::MatrixVectorMul(transform, gfx::Vector3dF(1, 0, 0));
   gfx::Vector3dF y_axis =
       vr::MatrixVectorMul(transform, gfx::Vector3dF(0, 1, 0));
   x_axis.Subtract(origin);
   y_axis.Subtract(origin);
@@ skipping 21 matching lines @@
 
 UiElement::~UiElement() = default;
 
 void UiElement::Render(VrShellRenderer* renderer,
                        vr::Mat4f view_proj_matrix) const {
   NOTREACHED();
 }
 
 void UiElement::Initialize() {}
 
-void UiElement::OnHoverEnter() {}
+void UiElement::OnHoverEnter(gfx::PointF position) {}
 
 void UiElement::OnHoverLeave() {}
 
-void UiElement::OnButtonDown() {}
+void UiElement::OnMove(gfx::PointF position) {}
 
-void UiElement::OnButtonUp() {}
+void UiElement::OnButtonDown(gfx::PointF position) {}
+
+void UiElement::OnButtonUp(gfx::PointF position) {}
 
 void UiElement::Animate(const base::TimeTicks& time) {
   for (auto& it : animations_) {
     Animation& animation = *it;
     if (time < animation.start)
       continue;
 
     // If |from| is not specified, start at the current values.
     if (animation.from.size() == 0) {
       switch (animation.property) {
@@ skipping 76 matching lines @@
 
 bool UiElement::IsVisible() const {
   return visible_ && computed_opacity_ > 0.0f;
 }
 
 bool UiElement::IsHitTestable() const {
   return IsVisible() && hit_testable_;
 }
 
 }  // namespace vr_shell