VR: Implement Omnibox input targeting.

chrome/browser/android/vr_shell/ui_elements/url_bar.cc

 // Copyright 2017 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/url_bar.h"
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/android/vr_shell/textures/url_bar_texture.h"
 
 namespace vr_shell {
@@ skipping 17 matching lines @@
 void UrlBar::UpdateTexture() {
   TexturedElement::UpdateTexture();
   last_update_time_ = last_begin_frame_time_;
 }
 
 UiTexture* UrlBar::GetTexture() const {
   return texture_.get();
 }
 
 void UrlBar::OnHoverEnter(const gfx::PointF& position) {
-  if (!texture_->SetDrawFlags(UrlBarTexture::FLAG_HOVER))
-    return;
-  UpdateTexture();
+  OnStateUpdated(position);
 }
 
 void UrlBar::OnHoverLeave() {
-  if (!texture_->SetDrawFlags(0))
-    return;
-  UpdateTexture();
+  OnStateUpdated(gfx::PointF(std::numeric_limits<float>::max(),
+                             std::numeric_limits<float>::max()));
+}
+
+void UrlBar::OnMove(const gfx::PointF& position) {
+  OnStateUpdated(position);
+}
+
+void UrlBar::OnButtonDown(const gfx::PointF& position) {
+  if (texture_->HitsBackButton(position))
+    down_ = true;
+  OnStateUpdated(position);
 }
 
 void UrlBar::OnButtonUp(const gfx::PointF& position) {
-  back_button_callback_.Run();
+  down_ = false;
+  OnStateUpdated(position);
+  if (texture_->HitsBackButton(position))
+    back_button_callback_.Run();
+}
+
+bool UrlBar::HitTest(const gfx::PointF& position) const {
+  return texture_->HitsUrlBar(position) || texture_->HitsBackButton(position);
 }
 
 void UrlBar::OnBeginFrame(const base::TimeTicks& begin_frame_time) {
   last_begin_frame_time_ = begin_frame_time;
   if (enabled_ && texture_->dirty()) {
     int64_t delta_ms = (begin_frame_time - last_update_time_).InMilliseconds();
     if (delta_ms > kUpdateDelayMS)
       UpdateTexture();
   }
 }
 
 void UrlBar::SetEnabled(bool enabled) {
   enabled_ = enabled;
   set_visible(enabled);
 }
 
 void UrlBar::SetURL(const GURL& gurl) {
   texture_->SetURL(gurl);
 }
 
 void UrlBar::SetSecurityLevel(int level) {
   texture_->SetSecurityLevel(level);
 }
 
 void UrlBar::SetBackButtonCallback(const base::Callback<void()>& callback) {
   back_button_callback_ = callback;
 }
 
+void UrlBar::OnStateUpdated(const gfx::PointF& position) {
+  bool hitting = texture_->HitsBackButton(position);
+  bool down = hitting ? down_ : false;
+
+  int flags = hitting ? UrlBarTexture::FLAG_BACK_HOVER : 0;
+  flags |= down ? UrlBarTexture::FLAG_BACK_DOWN : 0;
+  if (!texture_->SetDrawFlags(flags))
+    return;
+  UpdateTexture();
+}
+
 }  // namespace vr_shell