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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "RT-Animator"
#include "Animator.h"
#include <set>
#include "RenderNode.h"
#include "RenderProperties.h"
namespace android {
namespace uirenderer {
/************************************************************
* Base animator
************************************************************/
BaseAnimator::BaseAnimator()
: mInterpolator(0)
, mPlayState(PENDING)
, mStartTime(0)
, mDuration(300) {
}
BaseAnimator::~BaseAnimator() {
setInterpolator(NULL);
}
void BaseAnimator::setInterpolator(Interpolator* interpolator) {
delete mInterpolator;
mInterpolator = interpolator;
}
void BaseAnimator::setDuration(nsecs_t duration) {
mDuration = duration;
}
bool BaseAnimator::animateFrame(TreeInfo& info) {
if (mPlayState == PENDING) {
mPlayState = RUNNING;
mStartTime = info.frameTimeMs;
// No interpolator was set, use the default
if (!mInterpolator) {
setInterpolator(Interpolator::createDefaultInterpolator());
}
onAnimationStarted();
}
float fraction = 1.0f;
if (mPlayState == RUNNING) {
fraction = mDuration > 0 ? (float)(info.frameTimeMs - mStartTime) / mDuration : 1.0f;
if (fraction >= 1.0f) {
fraction = 1.0f;
mPlayState = FINISHED;
}
}
fraction = mInterpolator->interpolate(fraction);
onAnimationUpdated(fraction);
if (mPlayState == FINISHED) {
onAnimationFinished();
callOnFinishedListener(info);
return true;
}
return false;
}
void BaseAnimator::callOnFinishedListener(TreeInfo& info) {
if (mListener.get()) {
if (!info.animationHook) {
mListener->onAnimationFinished(this);
} else {
info.animationHook->callOnFinished(this, mListener.get());
}
}
}
/************************************************************
* BaseRenderNodeAnimator
************************************************************/
BaseRenderNodeAnimator::BaseRenderNodeAnimator(
BaseRenderNodeAnimator::DeltaValueType deltaType, float delta)
: mTarget(0)
, mDeltaValueType(deltaType)
, mDeltaValue(delta)
, mFromValue(-1) {
}
bool BaseRenderNodeAnimator::animate(RenderNode* target, TreeInfo& info) {
mTarget = target;
bool finished = animateFrame(info);
mTarget = NULL;
return finished;
}
void BaseRenderNodeAnimator::onAnimationStarted() {
mFromValue = getValue();
if (mDeltaValueType == BaseRenderNodeAnimator::ABSOLUTE) {
mDeltaValue = (mDeltaValue - mFromValue);
mDeltaValueType = BaseRenderNodeAnimator::DELTA;
}
}
void BaseRenderNodeAnimator::onAnimationUpdated(float fraction) {
float value = mFromValue + (mDeltaValue * fraction);
setValue(value);
}
/************************************************************
* RenderPropertyAnimator
************************************************************/
// Maps RenderProperty enum to accessors
const RenderPropertyAnimator::PropertyAccessors RenderPropertyAnimator::PROPERTY_ACCESSOR_LUT[] = {
{&RenderProperties::getTranslationX, &RenderProperties::setTranslationX },
{&RenderProperties::getTranslationY, &RenderProperties::setTranslationY },
{&RenderProperties::getTranslationZ, &RenderProperties::setTranslationZ },
{&RenderProperties::getScaleX, &RenderProperties::setScaleX },
{&RenderProperties::getScaleY, &RenderProperties::setScaleY },
{&RenderProperties::getRotation, &RenderProperties::setRotation },
{&RenderProperties::getRotationX, &RenderProperties::setRotationX },
{&RenderProperties::getRotationY, &RenderProperties::setRotationY },
{&RenderProperties::getX, &RenderProperties::setX },
{&RenderProperties::getY, &RenderProperties::setY },
{&RenderProperties::getZ, &RenderProperties::setZ },
{&RenderProperties::getAlpha, &RenderProperties::setAlpha },
};
RenderPropertyAnimator::RenderPropertyAnimator(RenderProperty property,
DeltaValueType deltaType, float deltaValue)
: BaseRenderNodeAnimator(deltaType, deltaValue)
, mPropertyAccess(PROPERTY_ACCESSOR_LUT[property]) {
}
float RenderPropertyAnimator::getValue() const {
return (target()->animatorProperties().*mPropertyAccess.getter)();
}
void RenderPropertyAnimator::setValue(float value) {
(target()->animatorProperties().*mPropertyAccess.setter)(value);
}
/************************************************************
* CanvasPropertyPrimitiveAnimator
************************************************************/
CanvasPropertyPrimitiveAnimator::CanvasPropertyPrimitiveAnimator(
CanvasPropertyPrimitive* property, DeltaValueType deltaType, float deltaValue)
: BaseRenderNodeAnimator(deltaType, deltaValue)
, mProperty(property) {
}
float CanvasPropertyPrimitiveAnimator::getValue() const {
return mProperty->value;
}
void CanvasPropertyPrimitiveAnimator::setValue(float value) {
mProperty->value = value;
}
/************************************************************
* CanvasPropertySkPaintAnimator
************************************************************/
CanvasPropertyPaintAnimator::CanvasPropertyPaintAnimator(
CanvasPropertyPaint* property, PaintField field,
DeltaValueType deltaType, float deltaValue)
: BaseRenderNodeAnimator(deltaType, deltaValue)
, mProperty(property)
, mField(field) {
}
float CanvasPropertyPaintAnimator::getValue() const {
switch (mField) {
case STROKE_WIDTH:
return mProperty->value.getStrokeWidth();
case ALPHA:
return mProperty->value.getAlpha();
}
LOG_ALWAYS_FATAL("Unknown field %d", (int) mField);
return -1;
}
static uint8_t to_uint8(float value) {
int c = (int) (value + .5f);
return static_cast<uint8_t>( c < 0 ? 0 : c > 255 ? 255 : c );
}
void CanvasPropertyPaintAnimator::setValue(float value) {
switch (mField) {
case STROKE_WIDTH:
mProperty->value.setStrokeWidth(value);
return;
case ALPHA:
mProperty->value.setAlpha(to_uint8(value));
return;
}
LOG_ALWAYS_FATAL("Unknown field %d", (int) mField);
}
} /* namespace uirenderer */
} /* namespace android */
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