Rename ActiveAnimation -> Animation

cc/active_animation.cc

-// Copyright 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 "cc/active_animation.h"
-
-#include <cmath>
-
-#include "base/debug/trace_event.h"
-#include "base/string_util.h"
-#include "cc/animation_curve.h"
-
-namespace {
-
-// This should match the RunState enum.
-static const char* const s_runStateNames[] = {
-    "WaitingForNextTick",
-    "WaitingForTargetAvailability",
-    "WaitingForStartTime",
-    "WaitingForDeletion",
-    "Running",
-    "Paused",
-    "Finished",
-    "Aborted"
-};
-
-COMPILE_ASSERT(static_cast<int>(cc::ActiveAnimation::RunStateEnumSize) == arraysize(s_runStateNames), RunState_names_match_enum);
-
-// This should match the TargetProperty enum.
-static const char* const s_targetPropertyNames[] = {
-    "Transform",
-    "Opacity"
-};
-
-COMPILE_ASSERT(static_cast<int>(cc::ActiveAnimation::TargetPropertyEnumSize) == arraysize(s_targetPropertyNames), TargetProperty_names_match_enum);
-
-} // namespace
-
-namespace cc {
-
-scoped_ptr<ActiveAnimation> ActiveAnimation::create(scoped_ptr<AnimationCurve> curve, int animationId, int groupId, TargetProperty targetProperty)
-{
-    return make_scoped_ptr(new ActiveAnimation(curve.Pass(), animationId, groupId, targetProperty));
-}
-
-ActiveAnimation::ActiveAnimation(scoped_ptr<AnimationCurve> curve, int animationId, int groupId, TargetProperty targetProperty)
-    : m_curve(curve.Pass())
-    , m_id(animationId)
-    , m_group(groupId)
-    , m_targetProperty(targetProperty)
-    , m_runState(WaitingForTargetAvailability)
-    , m_iterations(1)
-    , m_startTime(0)
-    , m_alternatesDirection(false)
-    , m_timeOffset(0)
-    , m_needsSynchronizedStartTime(false)
-    , m_suspended(false)
-    , m_pauseTime(0)
-    , m_totalPausedTime(0)
-    , m_isControllingInstance(false)
-{
-}
-
-ActiveAnimation::~ActiveAnimation()
-{
-    if (m_runState == Running || m_runState == Paused)
-        setRunState(Aborted, 0);
-}
-
-void ActiveAnimation::setRunState(RunState runState, double monotonicTime)
-{
-    if (m_suspended)
-        return;
-
-    char nameBuffer[256];
-    base::snprintf(nameBuffer, sizeof(nameBuffer), "%s-%d%s", s_targetPropertyNames[m_targetProperty], m_group, m_isControllingInstance ? "(impl)" : "");
-
-    bool isWaitingToStart = m_runState == WaitingForNextTick
-        || m_runState == WaitingForTargetAvailability
-        || m_runState == WaitingForStartTime;
-
-    if (isWaitingToStart && runState == Running)
-        TRACE_EVENT_ASYNC_BEGIN1("cc", "ActiveAnimation", this, "Name", TRACE_STR_COPY(nameBuffer));
-
-    bool wasFinished = isFinished();
-
-    const char* oldRunStateName = s_runStateNames[m_runState];
-
-    if (runState == Running && m_runState == Paused)
-        m_totalPausedTime += monotonicTime - m_pauseTime;
-    else if (runState == Paused)
-        m_pauseTime = monotonicTime;
-    m_runState = runState;
-
-    const char* newRunStateName = s_runStateNames[runState];
-
-    if (!wasFinished && isFinished())
-        TRACE_EVENT_ASYNC_END0("cc", "ActiveAnimation", this);
-
-    char stateBuffer[256];
-    base::snprintf(stateBuffer, sizeof(stateBuffer), "%s->%s", oldRunStateName, newRunStateName);
-
-    TRACE_EVENT_INSTANT2("cc", "LayerAnimationController::setRunState", "Name", TRACE_STR_COPY(nameBuffer), "State", TRACE_STR_COPY(stateBuffer));
-}
-
-void ActiveAnimation::suspend(double monotonicTime)
-{
-    setRunState(Paused, monotonicTime);
-    m_suspended = true;
-}
-
-void ActiveAnimation::resume(double monotonicTime)
-{
-    m_suspended = false;
-    setRunState(Running, monotonicTime);
-}
-
-bool ActiveAnimation::isFinishedAt(double monotonicTime) const
-{
-    if (isFinished())
-        return true;
-
-    if (m_needsSynchronizedStartTime)
-        return false;
-
-    return m_runState == Running
-        && m_iterations >= 0
-        && m_iterations * m_curve->duration() <= monotonicTime - startTime() - m_totalPausedTime;
-}
-
-double ActiveAnimation::trimTimeToCurrentIteration(double monotonicTime) const
-{
-    double trimmed = monotonicTime + m_timeOffset;
-
-    // If we're paused, time is 'stuck' at the pause time.
-    if (m_runState == Paused)
-        trimmed = m_pauseTime;
-
-    // Returned time should always be relative to the start time and should subtract
-    // all time spent paused.
-    trimmed -= m_startTime + m_totalPausedTime;
-
-    // Zero is always the start of the animation.
-    if (trimmed <= 0)
-        return 0;
-
-    // Always return zero if we have no iterations.
-    if (!m_iterations)
-        return 0;
-
-    // Don't attempt to trim if we have no duration.
-    if (m_curve->duration() <= 0)
-        return 0;
-
-    // If less than an iteration duration, just return trimmed.
-    if (trimmed < m_curve->duration())
-        return trimmed;
-
-    // If greater than or equal to the total duration, return iteration duration.
-    if (m_iterations >= 0 && trimmed >= m_curve->duration() * m_iterations) {
-        if (m_alternatesDirection && !(m_iterations % 2))
-            return 0;
-        return m_curve->duration();
-    }
-
-    // We need to know the current iteration if we're alternating.
-    int iteration = static_cast<int>(trimmed / m_curve->duration());
-
-    // Calculate x where trimmed = x + n * m_curve->duration() for some positive integer n.
-    trimmed = fmod(trimmed, m_curve->duration());
-
-    // If we're alternating and on an odd iteration, reverse the direction.
-    if (m_alternatesDirection && iteration % 2 == 1)
-        return m_curve->duration() - trimmed;
-
-    return trimmed;
-}
-
-scoped_ptr<ActiveAnimation> ActiveAnimation::clone(InstanceType instanceType) const
-{
-    return cloneAndInitialize(instanceType, m_runState, m_startTime);
-}
-
-scoped_ptr<ActiveAnimation> ActiveAnimation::cloneAndInitialize(InstanceType instanceType, RunState initialRunState, double startTime) const
-{
-    scoped_ptr<ActiveAnimation> toReturn(new ActiveAnimation(m_curve->clone(), m_id, m_group, m_targetProperty));
-    toReturn->m_runState = initialRunState;
-    toReturn->m_iterations = m_iterations;
-    toReturn->m_startTime = startTime;
-    toReturn->m_pauseTime = m_pauseTime;
-    toReturn->m_totalPausedTime = m_totalPausedTime;
-    toReturn->m_timeOffset = m_timeOffset;
-    toReturn->m_alternatesDirection = m_alternatesDirection;
-    toReturn->m_isControllingInstance = instanceType == ControllingInstance;
-    return toReturn.Pass();
-}
-
-void ActiveAnimation::pushPropertiesTo(ActiveAnimation* other) const
-{
-    // Currently, we only push changes due to pausing and resuming animations on the main thread.
-    if (m_runState == ActiveAnimation::Paused || other->m_runState == ActiveAnimation::Paused) {
-        other->m_runState = m_runState;
-        other->m_pauseTime = m_pauseTime;
-        other->m_totalPausedTime = m_totalPausedTime;
-    }
-}
-
-}  // namespace cc