@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
if (mPositionDataList == null || mPositionDataList.isEmpty()) {
return;
}
// 计算锚点位置
int currentPosition = Math.min(mPositionDataList.size() - 1, position);
int nextPosition = Math.min(mPositionDataList.size() - 1, position + 1);
PositionData current = mPositionDataList.get(currentPosition);
PositionData next = mPositionDataList.get(nextPosition);
mRect.left =
current.mContentLeft
- mHorizontalPadding
+ (next.mContentLeft - current.mContentLeft)
* mEndInterpolator.getInterpolation(positionOffset);
mRect.top = current.mContentTop - mVerticalPadding;
mRect.right =
current.mContentRight
+ mHorizontalPadding
+ (next.mContentRight - current.mContentRight)
* mStartInterpolator.getInterpolation(positionOffset);
mRect.bottom = current.mContentBottom + mVerticalPadding;
if (!mRoundRadiusSet) {
mRoundRadius = mRect.height() / 2;
}
invalidate();
}
private void updateWave() {
float progress =
Math.min(1f, (float) (SystemClock.uptimeMillis() - mStartTime) / mRippleAnimDuration);
if (mState != STATE_RELEASE) {
setRippleEffect(
mRipplePoint.x,
mRipplePoint.y,
mMaxRippleRadius * mInInterpolator.getInterpolation(progress));
if (progress == 1f) {
mStartTime = SystemClock.uptimeMillis();
if (mState == STATE_PRESS) setRippleState(STATE_HOVER);
else {
setRippleEffect(mRipplePoint.x, mRipplePoint.y, 0);
setRippleState(STATE_RELEASE);
}
}
} else {
setRippleEffect(
mRipplePoint.x,
mRipplePoint.y,
mMaxRippleRadius * mOutInterpolator.getInterpolation(progress));
if (progress == 1f) setRippleState(STATE_OUT);
}
if (isRunning()) scheduleSelf(mUpdater, SystemClock.uptimeMillis() + ViewUtil.FRAME_DURATION);
invalidateSelf();
}
@Override
public float getInterpolation(float t) {
if (t < 0.5) {
return 0.5f * BounceEaseIn.getInterpolation(t * 2.0f);
} else {
return 0.5f * BounceEaseOut.getInterpolation(t * 2.0f - 1.0f) + 0.5f;
}
}
@Override
public void draw(Canvas canvas) {
if (!mRunning) {
if (mVisible) canvas.drawCircle(mX, mY, mRadius, mPaint);
} else {
float radius =
mVisible
? mInInterpolator.getInterpolation(mAnimProgress) * mRadius
: (1f - mOutInterpolator.getInterpolation(mAnimProgress)) * mRadius;
canvas.drawCircle(mX, mY, radius, mPaint);
}
}
public boolean calculate(final long currentTimeMillis) {
if (mStartTime == NO_ANIMATION) return false;
if (mStartTime == ANIMATION_START) {
mStartTime = currentTimeMillis;
}
final int elapse = (int) (currentTimeMillis - mStartTime);
final float x = Utils.clamp((float) elapse / mDuration, 0f, 1f);
final Interpolator i = mInterpolator;
onCalculate(i != null ? i.getInterpolation(x) : x);
if (elapse >= mDuration) {
mStartTime = NO_ANIMATION;
}
return mStartTime != NO_ANIMATION;
}
public boolean calculate(long paramLong) {
if (this.mStartTime == -2L) ;
do {
return false;
if (this.mStartTime == -1L) this.mStartTime = paramLong;
int i = (int) (paramLong - this.mStartTime);
float f = Utils.clamp(i / this.mDuration, 0.0F, 1.0F);
Interpolator localInterpolator = this.mInterpolator;
if (localInterpolator != null) f = localInterpolator.getInterpolation(f);
onCalculate(f);
if (i < this.mDuration) continue;
this.mStartTime = -2L;
} while (this.mStartTime == -2L);
return true;
}
public void run() {
/**
* Only set mStartTime if this is the first time we're starting, else actually calculate the Y
* delta
*/
if (mStartTime == -1) {
mStartTime = System.currentTimeMillis();
} else {
/**
* We do do all calculations in long to reduce software float calculations. We use 1000 as
* it gives us good accuracy and small rounding errors
*/
long normalizedTime =
(1000 * (System.currentTimeMillis() - mStartTime)) / ANIMATION_DURATION_MS;
normalizedTime = Math.max(Math.min(normalizedTime, 1000), 0);
final int deltaY =
Math.round(
(mScrollFromY - mScrollToY)
* mInterpolator.getInterpolation(normalizedTime / 1000f));
mCurrentY = mScrollFromY - deltaY;
setHeaderScroll(mCurrentY);
}
// If we're not at the target Y, keep going...
if (mContinueRunning && mScrollToY != mCurrentY) {
mHandler.postDelayed(this, ANIMATION_FPS);
}
}
@Override
public void run() {
/**
* Only set mStartTime if this is the first time we're starting, else actually calculate the Y
* delta
*/
if (mStartTime == -1) {
mStartTime = System.currentTimeMillis();
} else {
/**
* We do do all calculations in long to reduce software float calculations. We use 1000 as
* it gives us good accuracy and small rounding errors
*/
long normalizedTime = (1000 * (System.currentTimeMillis() - mStartTime)) / mDuration;
normalizedTime = Math.max(Math.min(normalizedTime, 1000), 0);
final int deltaY =
Math.round(
(mScrollFromY - mScrollToY)
* mInterpolator.getInterpolation(normalizedTime / 1000f));
mCurrentY = mScrollFromY - deltaY;
setHeaderScroll(mCurrentY);
}
// If we're not at the target Y, keep going...
if (mContinueRunning && mScrollToY != mCurrentY) {
// if (VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN) {
// SDK16.postOnAnimation(PullToRefreshBase.this, this);
// } else {
postDelayed(this, ANIMATION_DELAY);
// }
}
}
@Override
public void run() {
/**
* Only set mStartTime if this is the first time we're starting, else actually calculate the Y
* delta
*/
if (mStartTime == -1) {
mStartTime = System.currentTimeMillis();
} else {
/**
* We do do all calculations in long to reduce software float calculations. We use 1000 as
* it gives us good accuracy and small rounding errors
*/
long normalizedTime = (1000 * (System.currentTimeMillis() - mStartTime)) / mDuration;
normalizedTime = Math.max(Math.min(normalizedTime, 1000), 0);
final int deltaY =
Math.round(
(mScrollFromY - mScrollToY)
* mInterpolator.getInterpolation(normalizedTime / 1000f));
mCurrentY = mScrollFromY - deltaY;
setHeaderScroll(mCurrentY);
}
// If we're not at the target Y, keep going...
if (mContinueRunning && mScrollToY != mCurrentY) {
ViewCompat.postOnAnimation(PullToRefreshBase.this, this);
} else {
if (null != mListener) {
mListener.onSmoothScrollFinished();
}
}
}
private void updateSwapTargetTranslation(
RecyclerView.ViewHolder draggingItem,
RecyclerView.ViewHolder swapTargetItem,
float translationPhase) {
final View swapItemView = swapTargetItem.itemView;
final int pos1 = draggingItem.getLayoutPosition();
final int pos2 = swapTargetItem.getLayoutPosition();
final Rect m1 = mDraggingItemMargins;
final Rect d1 = mDraggingItemDecorationOffsets;
final int h1 = mDraggingItemHeight + m1.top + m1.bottom + d1.top + d1.bottom;
if (mSwapTargetTranslationInterpolator != null) {
translationPhase = mSwapTargetTranslationInterpolator.getInterpolation(translationPhase);
}
if (pos1 > pos2) {
// dragging item moving to upward
ViewCompat.setTranslationY(swapItemView, translationPhase * h1);
} else {
// dragging item moving to downward
ViewCompat.setTranslationY(swapItemView, (translationPhase - 1.0f) * h1);
}
}
private void transform(View page, float position) {
float interpolatorPosition;
float translationX;
int pageWidth = page.getWidth();
if (mOutset <= 0) {
mOutset = (int) (mOutsetFraction * page.getWidth());
}
if (position < 0) {
interpolatorPosition = mInterpolator.getInterpolation(Math.abs(position));
translationX = -mEvaluator.evaluate(interpolatorPosition, 0, (pageWidth - mOutset));
} else {
interpolatorPosition = mInterpolator.getInterpolation(position);
translationX = mEvaluator.evaluate(interpolatorPosition, 0, (pageWidth - mOutset));
}
translationX += -page.getWidth() * position;
page.setTranslationX(translationX);
}
private void updateQuery() {
long curTime = SystemClock.uptimeMillis();
mAnimTime = (float) (curTime - mLastProgressStateTime) / mTravelDuration;
boolean requestUpdate =
mRunState == RUN_STATE_STOPPING || mProgressPercent == 0 || mAnimTime < 1f;
if (mAnimTime > 1f) {
mLastProgressStateTime = Math.round(curTime - (mAnimTime - 1f) * mTravelDuration);
mAnimTime -= 1f;
}
if (requestUpdate && mRunState != RUN_STATE_STOPPING) {
Rect bounds = getBounds();
int width = bounds.width();
float maxWidth = mMaxLineWidth == 0 ? width * mMaxLineWidthPercent : mMaxLineWidth;
float minWidth = mMinLineWidth == 0 ? width * mMinLineWidthPercent : mMinLineWidth;
mLineWidth =
mTransformInterpolator.getInterpolation(mAnimTime) * (minWidth - maxWidth) + maxWidth;
if (mReverse) mLineWidth = -mLineWidth;
mStartLine =
mReverse
? mTransformInterpolator.getInterpolation(mAnimTime) * (width + minWidth)
: ((1f - mTransformInterpolator.getInterpolation(mAnimTime)) * (width + minWidth)
- minWidth);
}
if (mRunState == RUN_STATE_STARTING) {
if (curTime - mLastRunStateTime > mInAnimationDuration) mRunState = RUN_STATE_RUNNING;
} else if (mRunState == RUN_STATE_STOPPING) {
if (curTime - mLastRunStateTime > mOutAnimationDuration) {
stop(false);
return;
}
}
if (isRunning()) {
if (requestUpdate)
scheduleSelf(mUpdater, SystemClock.uptimeMillis() + ViewUtil.FRAME_DURATION);
else if (mRunState == RUN_STATE_RUNNING) mRunState = RUN_STATE_STARTED;
}
invalidateSelf();
}
private void drawCircle(Canvas var1, float var2, float var3, int var4, float var5) {
this.mPaint.setColor(var4);
var1.save();
var1.translate(var2, var3);
var3 = INTERPOLATOR.getInterpolation(var5);
var1.scale(var3, var3);
var1.drawCircle(0.0F, 0.0F, var2, this.mPaint);
var1.restore();
}
/**
* Draws a circle centered in the view.
*
* @param canvas the canvas to draw on
* @param cx the center x coordinate
* @param cy the center y coordinate
* @param color the color to draw
* @param pct the percentage of the view that the circle should cover
*/
private void drawCircle(Canvas canvas, float cx, float cy, int color, float pct) {
mPaint.setColor(color);
canvas.save();
canvas.translate(cx, cy);
float radiusScale = INTERPOLATOR.getInterpolation(pct);
canvas.scale(radiusScale, radiusScale);
canvas.drawCircle(0, 0, cx, mPaint);
canvas.restore();
}
/**
* Computes the current zoom level, returning true if the zoom is still active and false if the
* zoom has finished.
*
* @see android.widget.Scroller#computeScrollOffset()
*/
public boolean computeZoom() {
if (mFinished) {
return false;
}
long tRTC = SystemClock.elapsedRealtime() - mStartRTC;
if (tRTC >= mAnimationDurationMillis) {
mFinished = true;
mCurrentZoom = mEndZoom;
applyZoomToCurrentRect(1f);
return false;
}
float t = tRTC * 1f / mAnimationDurationMillis;
mCurrentZoom = mEndZoom * mInterpolator.getInterpolation(t);
applyZoomToCurrentRect(mInterpolator.getInterpolation(t));
return true;
}
private void drawCircle(
Canvas paramCanvas, float paramFloat1, float paramFloat2, int paramInt, float paramFloat3) {
this.mPaint.setColor(paramInt);
paramCanvas.save();
paramCanvas.translate(paramFloat1, paramFloat2);
paramFloat2 = INTERPOLATOR.getInterpolation(paramFloat3);
paramCanvas.scale(paramFloat2, paramFloat2);
paramCanvas.drawCircle(0.0F, 0.0F, paramFloat1, this.mPaint);
paramCanvas.restore();
}
public static void getInterpolatorPoint(
Point startPoint, Point endPoint, Point outPoint, float t) {
if (outPoint == null) {
return;
}
t = INTERPOLATOR.getInterpolation(t);
t = Math.min(t, 1);
t = Math.max(t, 0);
outPoint.x = (int) (startPoint.x + (endPoint.x - startPoint.x) * t);
outPoint.y = (int) (startPoint.y + (endPoint.y - startPoint.y) * t);
}
private void update()
{
float f;
float f2;
f = Math.min((float)(AnimationUtils.currentAnimationTimeMillis() - mStartTime) / mDuration, 1.0F);
f2 = mInterpolator.getInterpolation(f);
mEdgeAlpha = mEdgeAlphaStart + (mEdgeAlphaFinish - mEdgeAlphaStart) * f2;
mEdgeScaleY = mEdgeScaleYStart + (mEdgeScaleYFinish - mEdgeScaleYStart) * f2;
mGlowAlpha = mGlowAlphaStart + (mGlowAlphaFinish - mGlowAlphaStart) * f2;
mGlowScaleY = mGlowScaleYStart + (mGlowScaleYFinish - mGlowScaleYStart) * f2;
if (f < 0.999F) goto _L2; else goto _L1
/**
* Call this when you want to know the new location. If it returns true, the animation is not yet
* finished.
*/
public boolean computeScrollOffset() {
if (mFinished) {
return false;
}
int timePassed = (int) (AnimationUtils.currentAnimationTimeMillis() - mStartTime);
if (timePassed < mDuration) {
switch (mMode) {
case SCROLL_MODE:
final float x = mInterpolator.getInterpolation(timePassed * mDurationReciprocal);
mCurrX = mStartX + Math.round(x * mDeltaX);
mCurrY = mStartY + Math.round(x * mDeltaY);
break;
case FLING_MODE:
final float t = (float) timePassed / mDuration;
final int index = (int) (NB_SAMPLES * t);
float distanceCoef = 1.f;
float velocityCoef = 0.f;
if (index < NB_SAMPLES) {
final float t_inf = (float) index / NB_SAMPLES;
final float t_sup = (float) (index + 1) / NB_SAMPLES;
final float d_inf = SPLINE_POSITION[index];
final float d_sup = SPLINE_POSITION[index + 1];
velocityCoef = (d_sup - d_inf) / (t_sup - t_inf);
distanceCoef = d_inf + (t - t_inf) * velocityCoef;
}
mCurrVelocity = velocityCoef * mDistance / mDuration * 1000.0f;
mCurrX = mStartX + Math.round(distanceCoef * (mFinalX - mStartX));
// Pin to mMinX <= mCurrX <= mMaxX
mCurrX = Math.min(mCurrX, mMaxX);
mCurrX = Math.max(mCurrX, mMinX);
mCurrY = mStartY + Math.round(distanceCoef * (mFinalY - mStartY));
// Pin to mMinY <= mCurrY <= mMaxY
mCurrY = Math.min(mCurrY, mMaxY);
mCurrY = Math.max(mCurrY, mMinY);
if (mCurrX == mFinalX && mCurrY == mFinalY) {
mFinished = true;
}
break;
}
} else {
mCurrX = mFinalX;
mCurrY = mFinalY;
mFinished = true;
}
return true;
}
@Override
public float getInterpolation(float input) {
Interpolator interpolator = null;
final float targetDuration = totalDuration * input;
float durationSum = 0;
float from = 0f;
float to = 0f;
float modifiedInput = 0f;
for (int i = 0; i < interpolators.length; ++i) {
float oldDurationSum = durationSum;
float duration = durations[i];
durationSum += duration;
to = targets[i];
if (targetDuration <= durationSum) {
interpolator = interpolators[i];
modifiedInput = (targetDuration - oldDurationSum) / duration;
break;
}
from = to;
}
return from + (to - from) * interpolator.getInterpolation(modifiedInput);
}
private void animationSleep(int j, Interpolator interpolator, float delta)
throws InterruptedException {
int interpolation = (int) (interpolator.getInterpolation(j / delta) * 10000000);
int milliseconds = 0;
if (interpolation >= MAX_SLEEP_NANOS) {
milliseconds = interpolation / NANO_SECS;
interpolation = interpolation % NANO_SECS;
}
try {
Thread.sleep(milliseconds, interpolation);
} catch (IllegalArgumentException ignore) {
}
}
void animateValue(float fraction) {
fraction = mInterpolator.getInterpolation(fraction);
mCurrentFraction = fraction;
int numValues = mValues.length;
for (PropertyValuesHolder mValue : mValues) {
mValue.calculateValue(fraction);
}
if (mUpdateListeners != null) {
int numListeners = mUpdateListeners.size();
for (AnimatorUpdateListener mUpdateListener : mUpdateListeners) {
mUpdateListener.onAnimationUpdate(this);
}
}
}
/**
* This method is called with the elapsed fraction of the animation during every animation frame.
* This function turns the elapsed fraction into an interpolated fraction and then into an
* animated value (from the evaluator. The function is called mostly during animation updates, but
* it is also called when the <code>end()</code> function is called, to set the final value on the
* property.
*
* <p>Overrides of this method must call the superclass to perform the calculation of the animated
* value.
*
* @param fraction The elapsed fraction of the animation.
*/
void animateValue(float fraction) {
fraction = mInterpolator.getInterpolation(fraction);
mCurrentFraction = fraction;
int numValues = mValues.length;
for (int i = 0; i < numValues; ++i) {
mValues[i].calculateValue(fraction);
}
if (mUpdateListeners != null) {
int numListeners = mUpdateListeners.size();
for (int i = 0; i < numListeners; ++i) {
mUpdateListeners.get(i).onAnimationUpdate(this);
}
}
}
@Override
public void run() {
long now = AnimationUtils.currentAnimationTimeMillis();
long duration = now - mStartTime;
if (duration >= ANIMATION_DURATION) {
mAlpha = 0.0f;
invalidate();
stop();
return;
} else {
mAlpha = mInterpolator.getInterpolation(1 - duration / (float) ANIMATION_DURATION);
invalidate();
}
postDelayed(mUpdater, FRAME_DURATION);
}
@Override
public void run() {
long currentTime = SystemClock.uptimeMillis();
long diff = currentTime - mStartTime;
if (diff < mDuration) {
float interpolation = mInterpolator.getInterpolation((float) diff / (float) mDuration);
scheduleSelf(mUpdater, currentTime + FRAME_DURATION);
updateAnimation(interpolation);
} else {
unscheduleSelf(mUpdater);
mRunning = false;
updateAnimation(1f);
}
}
/**
* Gets the animated value, given the elapsed fraction of the animation (interpolated by the
* animation's interpolator) and the evaluator used to calculate in-between values. This function
* maps the input fraction to the appropriate keyframe interval and a fraction between them and
* returns the interpolated value. Note that the input fraction may fall outside the [0-1] bounds,
* if the animation's interpolator made that happen (e.g., a spring interpolation that might send
* the fraction past 1.0). We handle this situation by just using the two keyframes at the
* appropriate end when the value is outside those bounds.
*
* @param fraction The elapsed fraction of the animation
* @return The animated value.
*/
public Object getValue(float fraction) {
// Special-case optimization for the common case of only two keyframes
if (mNumKeyframes == 2) {
if (mInterpolator != null) {
fraction = mInterpolator.getInterpolation(fraction);
}
return mEvaluator.evaluate(fraction, mFirstKeyframe.getValue(), mLastKeyframe.getValue());
}
if (fraction <= 0f) {
final Keyframe nextKeyframe = mKeyframes.get(1);
final /*Time*/ Interpolator interpolator = nextKeyframe.getInterpolator();
if (interpolator != null) {
fraction = interpolator.getInterpolation(fraction);
}
final float prevFraction = mFirstKeyframe.getFraction();
float intervalFraction =
(fraction - prevFraction) / (nextKeyframe.getFraction() - prevFraction);
return mEvaluator.evaluate(
intervalFraction, mFirstKeyframe.getValue(), nextKeyframe.getValue());
} else if (fraction >= 1f) {
final Keyframe prevKeyframe = mKeyframes.get(mNumKeyframes - 2);
final /*Time*/ Interpolator interpolator = mLastKeyframe.getInterpolator();
if (interpolator != null) {
fraction = interpolator.getInterpolation(fraction);
}
final float prevFraction = prevKeyframe.getFraction();
float intervalFraction =
(fraction - prevFraction) / (mLastKeyframe.getFraction() - prevFraction);
return mEvaluator.evaluate(
intervalFraction, prevKeyframe.getValue(), mLastKeyframe.getValue());
}
Keyframe prevKeyframe = mFirstKeyframe;
for (int i = 1; i < mNumKeyframes; ++i) {
Keyframe nextKeyframe = mKeyframes.get(i);
if (fraction < nextKeyframe.getFraction()) {
final /*Time*/ Interpolator interpolator = nextKeyframe.getInterpolator();
if (interpolator != null) {
fraction = interpolator.getInterpolation(fraction);
}
final float prevFraction = prevKeyframe.getFraction();
float intervalFraction =
(fraction - prevFraction) / (nextKeyframe.getFraction() - prevFraction);
return mEvaluator.evaluate(
intervalFraction, prevKeyframe.getValue(), nextKeyframe.getValue());
}
prevKeyframe = nextKeyframe;
}
// shouldn't reach here
return mLastKeyframe.getValue();
}
@Override
public void computeRender(float renderProgress) {
if (mRiverPath == null) {
return;
}
if (mRiverMeasure == null) {
mRiverMeasure = new PathMeasure(mRiverPath, false);
}
float fishProgress = FISH_INTERPOLATOR.getInterpolation(renderProgress);
mRiverMeasure.getPosTan(mRiverMeasure.getLength() * fishProgress, mFishHeadPos, null);
mFishRotateDegrees = calculateRotateDegrees(fishProgress);
}
@Override
public final void run() {
if (!mStarted) return;
final long timeElapsed = AnimationUtils.currentAnimationTimeMillis() - mStartTime;
mAnimationValue = mInterpolator.getInterpolation(timeElapsed / (float) mDuration);
onAnimationUpdate();
if (timeElapsed < mDuration) {
Compat.postOnAnimation(mView, this);
} else {
if (++mRunCount < mRepeatCount || mRepeatCount == INFINITE) {
restart();
}
}
}
private void update() {
long curTime = SystemClock.uptimeMillis();
float progress = Math.min(1f, (float) (curTime - mStartTime) / mAnimDuration);
float value = mInterpolator.getInterpolation(progress);
mThumbPosition =
mChecked ? (mStartPosition * (1 - value) + value) : (mStartPosition * (1 - value));
if (progress == 1f) stopAnimation();
if (mRunning) {
if (getHandler() != null)
getHandler().postAtTime(mUpdater, SystemClock.uptimeMillis() + ViewUtil.FRAME_DURATION);
else stopAnimation();
}
invalidate();
}
/**
* Call this when you want to know the new location. If it returns true, the animation is not yet
* finished.
*/
public boolean computeScrollOffset() {
if (isFinished()) {
return false;
}
switch (mMode) {
case SCROLL_MODE:
long time = AnimationUtils.currentAnimationTimeMillis();
// Any scroller can be used for time, since they were started
// together in scroll mode. We use X here.
final long elapsedTime = time - mScrollerX.mStartTime;
final int duration = mScrollerX.mDuration;
if (elapsedTime < duration) {
final float q = mInterpolator.getInterpolation(elapsedTime / (float) duration);
mScrollerX.updateScroll(q);
mScrollerY.updateScroll(q);
} else {
abortAnimation();
}
break;
case FLING_MODE:
if (!mScrollerX.mFinished) {
if (!mScrollerX.update()) {
if (!mScrollerX.continueWhenFinished()) {
mScrollerX.finish();
}
}
}
if (!mScrollerY.mFinished) {
if (!mScrollerY.update()) {
if (!mScrollerY.continueWhenFinished()) {
mScrollerY.finish();
}
}
}
break;
}
return true;
}
