Animate window control changes in TouchView

ash/frame/custom_frame_view_ash.cc

 // Copyright (c) 2012 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 "ash/frame/custom_frame_view_ash.h"
 
+#include <algorithm>
+#include <vector>
+
 #include "ash/ash_switches.h"
 #include "ash/frame/caption_buttons/frame_caption_button_container_view.h"
 #include "ash/frame/default_header_painter.h"
 #include "ash/frame/frame_border_hit_test_controller.h"
 #include "ash/frame/frame_util.h"
 #include "ash/frame/header_painter.h"
 #include "ash/session/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_observer.h"
 #include "ash/wm/immersive_fullscreen_controller.h"
@@ skipping 126 matching lines @@
   int GetPreferredHeight() const;
 
   // Returns the view's minimum width.
   int GetMinimumWidth() const;
 
   void UpdateAvatarIcon();
 
   // views::View:
   virtual void Layout() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void ChildPreferredSizeChanged(views::View* child) OVERRIDE;
 
   // ShellObserver:
   virtual void OnMaximizeModeStarted() OVERRIDE;
   virtual void OnMaximizeModeEnded() OVERRIDE;
 
   FrameCaptionButtonContainerView* caption_button_container() {
     return caption_button_container_;
   }
 
   views::View* avatar_icon() const {
@@ skipping 115 matching lines @@
 void CustomFrameViewAsh::HeaderView::OnPaint(gfx::Canvas* canvas) {
   bool paint_as_active =
       frame_->non_client_view()->frame_view()->ShouldPaintAsActive();
   caption_button_container_->SetPaintAsActive(paint_as_active);
 
   HeaderPainter::Mode header_mode = paint_as_active ?
       HeaderPainter::MODE_ACTIVE : HeaderPainter::MODE_INACTIVE;
   header_painter_->PaintHeader(canvas, header_mode);
 }
 
+void CustomFrameViewAsh::HeaderView::
+    ChildPreferredSizeChanged(views::View* child) {
+  // FrameCaptionButtonContainerView animates the visibility changes in
+  // UpdateSizeButtonVisibility(false). Due to this a new size is not available
+  // until the completion of the animation. Layout it response to the preferred
+  // size changes.
+  if (child != caption_button_container_)
+    return;
+  parent()->Layout();
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // CustomFrameViewAsh::HeaderView, ShellObserver overrides:
 
 void CustomFrameViewAsh::HeaderView::OnMaximizeModeStarted() {
   caption_button_container_->UpdateSizeButtonVisibility(true);
   parent()->Layout();
 }
 
 void CustomFrameViewAsh::HeaderView::OnMaximizeModeEnded() {
   caption_button_container_->UpdateSizeButtonVisibility(false);
@@ skipping 239 matching lines @@
 FrameCaptionButtonContainerView* CustomFrameViewAsh::
     GetFrameCaptionButtonContainerViewForTest() {
   return header_view_->caption_button_container();
 }
 
 int CustomFrameViewAsh::NonClientTopBorderHeight() const {
   return frame_->IsFullscreen() ? 0 : header_view_->GetPreferredHeight();
 }
 
 }  // namespace ash