Move *Animation to app/

http://crbug.com/11387

Review URL: http://codereview.chromium.org/109001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15275 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 102 insertions, 0 deletions

diff --git a/app/slide_animation.h b/app/slide_animation.h
new file mode 100644
index 0000000..4bbcd2e
--- /dev/null
+++ b/app/slide_animation.h
@@ -0,0 +1,102 @@
+// Copyright (c) 2006-2008 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 APP_SLIDE_ANIMATION_H_
+#define APP_SLIDE_ANIMATION_H_
+
+#include "app/animation.h"
+
+// Slide Animation
+//
+// Used for reversible animations and as a general helper class. Typical usage:
+//
+// #include "app/slide_animation.h"
+//
+// class MyClass : public AnimationDelegate {
+//  public:
+//   MyClass() {
+//     animation_.reset(new SlideAnimation(this));
+//     animation_->SetSlideDuration(500);
+//   }
+//   void OnMouseOver() {
+//     animation_->Show();
+//   }
+//   void OnMouseOut() {
+//     animation_->Hide();
+//   }
+//   void AnimationProgressed(const Animation* animation) {
+//     if (animation == animation_.get()) {
+//       Layout();
+//       SchedulePaint();
+//     } else if (animation == other_animation_.get()) {
+//       ...
+//     }
+//   }
+//   void Layout() {
+//     if (animation_->IsAnimating()) {
+//       hover_image_.SetOpacity(animation_->GetCurrentValue());
+//     }
+//   }
+//  private:
+//   scoped_ptr<SlideAnimation> animation_;
+// }
+class SlideAnimation : public Animation {
+ public:
+  explicit SlideAnimation(AnimationDelegate* target);
+  virtual ~SlideAnimation();
+
+  enum TweenType {
+    NONE,          // Default linear.
+    EASE_OUT,      // Fast in, slow out.
+    EASE_IN,       // Slow in, fast out.
+    EASE_IN_OUT,   // Slow in and out, fast in the middle.
+    FAST_IN_OUT,   // Fast in and out, slow in the middle.
+    EASE_OUT_SNAP, // Fast in, slow out, snap to final value.
+  };
+
+  // Set the animation back to the 0 state.
+  virtual void Reset();
+  virtual void Reset(double value);
+
+  // Begin a showing animation or reverse a hiding animation in progress.
+  virtual void Show();
+
+  // Begin a hiding animation or reverse a showing animation in progress.
+  virtual void Hide();
+
+  // Sets the time a slide will take. Note that this isn't actually
+  // the amount of time an animation will take as the current value of
+  // the slide is considered.
+  virtual void SetSlideDuration(int duration) { slide_duration_ = duration; }
+  int GetSlideDuration() const { return slide_duration_; }
+  void SetTweenType(TweenType tween_type) { tween_type_ = tween_type; }
+
+  double GetCurrentValue() const { return value_current_; }
+  bool IsShowing() const { return showing_; }
+
+ private:
+  // Overridden from Animation.
+  void AnimateToState(double state);
+
+  AnimationDelegate* target_;
+
+  TweenType tween_type_;
+
+  // Used to determine which way the animation is going.
+  bool showing_;
+
+  // Animation values. These are a layer on top of Animation::state_ to
+  // provide the reversability.
+  double value_start_;
+  double value_end_;
+  double value_current_;
+
+  // How long a hover in/out animation will last for. This defaults to
+  // kHoverFadeDurationMS, but can be overridden with SetDuration.
+  int slide_duration_;
+
+  DISALLOW_COPY_AND_ASSIGN(SlideAnimation);
+};
+
+#endif  // APP_SLIDE_ANIMATION_H_