Index: chrome/renderer/webview_animating_overlay.h |
diff --git a/chrome/renderer/webview_animating_overlay.h b/chrome/renderer/webview_animating_overlay.h |
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+++ b/chrome/renderer/webview_animating_overlay.h |
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+// 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. |
+ |
+#ifndef CHROME_RENDERER_WEBVIEW_ANIMATING_OVERLAY_H_ |
+#define CHROME_RENDERER_WEBVIEW_ANIMATING_OVERLAY_H_ |
+ |
+#include "base/compiler_specific.h" |
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebPageOverlay.h" |
+#include "ui/base/animation/animation_delegate.h" |
+#include "ui/base/animation/linear_animation.h" |
+ |
+namespace content { |
+class RenderView; |
+} |
+ |
+// This class draws a gradient on a PageOverlay of a WebView. The gradient |
+// fades in when shown and fades out when hidden. |
+class WebViewAnimatingOverlay : public WebKit::WebPageOverlay, |
+ public ui::AnimationDelegate { |
+ public: |
+ enum State { |
+ ANIMATING_IN, |
+ VISIBLE, |
+ ANIMATING_OUT, |
+ HIDDEN |
+ }; |
+ |
+ explicit WebViewAnimatingOverlay(content::RenderView* render_view); |
+ virtual ~WebViewAnimatingOverlay(); |
+ void Show(); |
+ void Hide(); |
+ |
+ State state() { return state_; } |
+ |
+ // WebKit::WebPageOverlay implementation: |
+ virtual void paintPageOverlay(WebKit::WebCanvas* canvas) OVERRIDE; |
+ |
+ // ui::AnimationDelegate implementation: |
+ virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE; |
+ virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE; |
+ |
+ private: |
+ int GetCurrentAlpha(); |
+ |
+ content::RenderView* render_view_; |
+ State state_; |
+ ui::LinearAnimation animation_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(WebViewAnimatingOverlay); |
+}; |
+ |
+#endif // CHROME_RENDERER_WEBVIEW_ANIMATING_OVERLAY_H_ |