[SendTabToSelf] Make omnibox icon disappear after "Sending..." animation is shown.

This is flag protected by kSendTabToSelfOmniboxSendingAnimation.

Screencast: http://dr/file/d/1ySVzuot-OZuP-fsyNGWTnKlf2E5Th4p-/view

Bug: 1007536
Change-Id: I5911277b245ae4e7656de10f37c7cc2645016e5c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2131847Reviewed-by: Kristi Park <kristipark@chromium.org>
Reviewed-by: Tanya Gupta <tgupta@chromium.org>
Commit-Queue: Sophey Dong <sophey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#756739}

chrome/browser/ui/views/send_tab_to_self/send_tab_to_self_icon_view.cc

@@ -55,6 +55,9 @@ void SendTabToSelfIconView::UpdateImpl() {
     return;
   }
 
+  if (!is_animating_label() && !omnibox_view->model()->has_focus()) {
+    sending_animation_state_ = AnimationState::kNotShown;
+  }
   if (GetVisible() ||
       base::FeatureList::IsEnabled(kSendTabToSelfOmniboxSendingAnimation)) {
     SendTabToSelfBubbleController* controller = GetController();
@@ -71,6 +74,7 @@ void SendTabToSelfIconView::UpdateImpl() {
       } else {
         AnimateIn(IDS_BROWSER_SHARING_OMNIBOX_SENDING_LABEL);
       }
+      sending_animation_state_ = AnimationState::kShowing;
     }
   }
   if (!GetVisible() && omnibox_view->model()->has_focus() &&
@@ -86,7 +90,10 @@ void SendTabToSelfIconView::UpdateImpl() {
       initial_animation_state_ = AnimationState::kShowing;
       controller->SetInitialSendAnimationShown(true);
     }
-    SetVisible(true);
+    if (!base::FeatureList::IsEnabled(kSendTabToSelfOmniboxSendingAnimation) ||
+        sending_animation_state_ == AnimationState::kNotShown) {
+      SetVisible(true);
+    }
   }
 }
 
@@ -115,9 +122,44 @@ SendTabToSelfBubbleController* SendTabToSelfIconView::GetController() const {
       web_contents);
 }
 
+void SendTabToSelfIconView::AnimationProgressed(
+    const gfx::Animation* animation) {
+  if (base::FeatureList::IsEnabled(kSendTabToSelfOmniboxSendingAnimation) &&
+      sending_animation_state_ == AnimationState::kShowing) {
+    UpdateOpacity();
+  }
+  return PageActionIconView::AnimationProgressed(animation);
+}
+
 void SendTabToSelfIconView::AnimationEnded(const gfx::Animation* animation) {
   PageActionIconView::AnimationEnded(animation);
   initial_animation_state_ = AnimationState::kShown;
+  if (base::FeatureList::IsEnabled(kSendTabToSelfOmniboxSendingAnimation) &&
+      sending_animation_state_ == AnimationState::kShowing) {
+    UpdateOpacity();
+    SetVisible(false);
+    sending_animation_state_ = AnimationState::kShown;
+  }
+}
+
+void SendTabToSelfIconView::UpdateOpacity() {
+  if (!IsShrinking()) {
+    DestroyLayer();
+    SetTextSubpixelRenderingEnabled(true);
+    return;
+  }
+
+  if (!layer()) {
+    SetPaintToLayer();
+    SetTextSubpixelRenderingEnabled(false);
+    layer()->SetFillsBoundsOpaquely(false);
+  }
+
+  // Large enough number so that there is enough granularity (1/kLargeNumber) in
+  // the opacity as the animation shrinks.
+  int kLargeNumber = 100;
+  layer()->SetOpacity(GetWidthBetween(0, kLargeNumber) /
+                      static_cast<float>(kLargeNumber));
 }
 
 }  // namespace send_tab_to_self

chrome/browser/ui/views/send_tab_to_self/send_tab_to_self_icon_view.h

@@ -30,6 +30,7 @@ class SendTabToSelfIconView : public PageActionIconView {
   base::string16 GetTextForTooltipAndAccessibleName() const override;
 
   // gfx::AnimationDelegate:
+  void AnimationProgressed(const gfx::Animation* animation) override;
   void AnimationEnded(const gfx::Animation* animation) override;
 
  protected:
@@ -38,6 +39,10 @@ class SendTabToSelfIconView : public PageActionIconView {
   const gfx::VectorIcon& GetVectorIcon() const override;
   const char* GetClassName() const override;
 
+  // Updates the opacity according to the length of the label view as it is
+  // shrinking.
+  void UpdateOpacity();
+
  private:
   enum class AnimationState { kNotShown, kShowing, kShown };
 
@@ -45,6 +50,9 @@ class SendTabToSelfIconView : public PageActionIconView {
 
   // Indicates the current state of the initial "Send" animation.
   AnimationState initial_animation_state_ = AnimationState::kNotShown;
+  // Indicates whether the "Sending..." animation has been shown since the last
+  // time the omnibox was in focus.
+  AnimationState sending_animation_state_ = AnimationState::kNotShown;
 
   DISALLOW_COPY_AND_ASSIGN(SendTabToSelfIconView);
 };