Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 145 insertions, 0 deletions

diff --git a/chrome/common/animation.cc b/chrome/common/animation.cc
new file mode 100644
index 0000000..585f1b7
--- /dev/null
+++ b/chrome/common/animation.cc
@@ -0,0 +1,145 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "base/message_loop.h"
+#include "chrome/common/animation.h"
+
+Animation::Animation(int frame_rate,
+                     AnimationDelegate* delegate)
+  : animating_(false),
+    frame_rate_(frame_rate),
+    timer_interval_(CalculateInterval(frame_rate)),
+    duration_(0),
+    iteration_count_(0),
+    current_iteration_(0),
+    state_(0.0),
+    delegate_(delegate),
+    timer_(TimeDelta::FromMilliseconds(timer_interval_)) {
+  timer_.set_unowned_task(this);
+}
+
+Animation::Animation(int duration,
+                     int frame_rate,
+                     AnimationDelegate* delegate)
+  : animating_(false),
+    frame_rate_(frame_rate),
+    timer_interval_(CalculateInterval(frame_rate)),
+    duration_(0),
+    iteration_count_(0),
+    current_iteration_(0),
+    state_(0.0),
+    delegate_(delegate),
+    timer_(TimeDelta::FromMilliseconds(timer_interval_)) {
+  timer_.set_unowned_task(this);
+
+  SetDuration(duration);
+}
+
+Animation::~Animation() {
+}
+
+void Animation::Reset() {
+  current_iteration_ = 0;
+}
+
+double Animation::GetCurrentValue() const {
+  // Default is linear relationship, subclass to adapt.
+  return state_;
+}
+
+void Animation::Start() {
+  if (!animating_) {
+    timer_.Start();
+
+    animating_ = true;
+    if (delegate_)
+      delegate_->AnimationStarted(this);
+  }
+}
+
+void Animation::Stop() {
+  if (animating_) {
+    timer_.Stop();
+
+    animating_ = false;
+    if (delegate_) {
+      if (state_ >= 1.0)
+        delegate_->AnimationEnded(this);
+      else
+        delegate_->AnimationCanceled(this);
+    }
+  }
+}
+
+void Animation::End() {
+  if (animating_) {
+    timer_.Stop();
+
+    animating_ = false;
+    AnimateToState(1.0);
+    if (delegate_)
+      delegate_->AnimationEnded(this);
+  }
+}
+
+bool Animation::IsAnimating() {
+  return animating_;
+}
+
+void Animation::Run() {
+  state_ = static_cast<double>(++current_iteration_) / iteration_count_;
+
+  if (state_ >= 1.0)
+    state_ = 1.0;
+
+  AnimateToState(state_);
+  if (delegate_)
+    delegate_->AnimationProgressed(this);
+
+  if (state_ == 1.0)
+    Stop();
+}
+
+void Animation::SetDuration(int duration) {
+  duration_ = duration;
+  if (duration_ < timer_interval_)
+    duration_ = timer_interval_;
+  iteration_count_ = duration_ / timer_interval_;
+
+  // Changing the number of iterations forces us to reset the
+  // animation to the first iteration.
+  current_iteration_ = 0;
+}
+
+int Animation::CalculateInterval(int frame_rate) {
+  int timer_interval = 1000 / frame_rate;
+  if (timer_interval < 10)
+    timer_interval = 10;
+  return timer_interval;
+}