private void animateRotate(View left, View right, float positionOffset, boolean up) {
if (mState != State.IDLE) {
if (left != null) {
manageLayer(left, true);
mRot = (up ? 1 : -1) * (ROT_MAX * positionOffset);
mTrans =
(up ? -1 : 1)
* (float)
(getMeasuredHeight() - getMeasuredHeight() * Math.cos(mRot * Math.PI / 180.0f));
ViewHelper.setPivotX(left, left.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(left, up ? 0 : left.getMeasuredHeight());
ViewHelper.setTranslationY(left, mTrans);
ViewHelper.setRotation(left, mRot);
}
if (right != null) {
manageLayer(right, true);
mRot = (up ? 1 : -1) * (-ROT_MAX + ROT_MAX * positionOffset);
mTrans =
(up ? -1 : 1)
* (float)
(getMeasuredHeight() - getMeasuredHeight() * Math.cos(mRot * Math.PI / 180.0f));
ViewHelper.setPivotX(right, right.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(right, up ? 0 : right.getMeasuredHeight());
ViewHelper.setTranslationY(right, mTrans);
ViewHelper.setRotation(right, mRot);
}
}
}
private void animateZoom(View left, View right, float positionOffset, boolean in) {
if (mState != State.IDLE) {
if (left != null) {
manageLayer(left, true);
mScale =
in
? ZOOM_MAX + (1 - ZOOM_MAX) * (1 - positionOffset)
: 1 + ZOOM_MAX - ZOOM_MAX * (1 - positionOffset);
ViewHelper.setPivotX(left, left.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(left, left.getMeasuredHeight() * 0.5f);
ViewHelper.setScaleX(left, mScale);
ViewHelper.setScaleY(left, mScale);
}
if (right != null) {
manageLayer(right, true);
mScale =
in
? ZOOM_MAX + (1 - ZOOM_MAX) * positionOffset
: 1 + ZOOM_MAX - ZOOM_MAX * positionOffset;
ViewHelper.setPivotX(right, right.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(right, right.getMeasuredHeight() * 0.5f);
ViewHelper.setScaleX(right, mScale);
ViewHelper.setScaleY(right, mScale);
}
}
}
private void animateFlipVertical(
View left, View right, float positionOffset, int positionOffsetPixels) {
if (mState != State.IDLE) {
if (left != null) {
manageLayer(left, true);
mRot = 180.0f * positionOffset;
if (mRot > 90.0f) {
left.setVisibility(View.INVISIBLE);
} else {
if (left.getVisibility() == View.INVISIBLE) left.setVisibility(View.VISIBLE);
mTrans = positionOffsetPixels;
ViewHelper.setPivotX(left, left.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(left, left.getMeasuredHeight() * 0.5f);
ViewHelper.setTranslationX(left, mTrans);
ViewHelper.setRotationX(left, mRot);
}
}
if (right != null) {
manageLayer(right, true);
mRot = -180.0f * (1 - positionOffset);
if (mRot < -90.0f) {
right.setVisibility(View.INVISIBLE);
} else {
if (right.getVisibility() == View.INVISIBLE) right.setVisibility(View.VISIBLE);
mTrans = -getWidth() - getPageMargin() + positionOffsetPixels;
ViewHelper.setPivotX(right, right.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(right, right.getMeasuredHeight() * 0.5f);
ViewHelper.setTranslationX(right, mTrans);
ViewHelper.setRotationX(right, mRot);
}
}
}
}
@Override
protected void onTransform(View view, float position) {
// Rotate the fragment on the left or right edge
ViewHelper.setPivotX(view, position > 0 ? 0 : view.getWidth());
ViewHelper.setPivotY(view, 0);
ViewHelper.setRotation(view, -90f * position);
}
/** 滚动发生时调用 */
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
/**
* 距离qq差别 ：1.qq内容区域实现了一个缩放的效果 2.菜单的偏移量一直在变化 3.菜单也存在缩放和透明度的变化 实现1.需要将 0.7 ~ 1.0 (0.7 + 0.3 *
* scale) 实现2.修改菜单的其实隐藏跨度 实现3.菜单透明度变化0.6 ~ 1.0 ( 0.6 + 0.4 *(1-scale))+缩放：0.7~1.0（1.0 -
* scale*0.3）
*/
// l是当前SrocllX值
float scale = l * 1.0f / mMenuWidth;
Log.i("SlidingMenu:onScrollChanged", "" + scale);
// 调用属性动画 设置TranslationX 修改菜单的其实隐藏跨度,其实隐藏60%
ViewHelper.setTranslationX(mMenu, mMenuWidth * scale * 0.6f);
// 实现内容区域缩小
float contextScale = 0.7f + 0.3f * scale;
// 设置缩放的中心点 设置内容区域缩放值
ViewHelper.setPivotX(mContent, 0);
ViewHelper.setPivotY(mContent, mContent.getHeight() / 2);
ViewHelper.setScaleX(mContent, contextScale);
ViewHelper.setScaleY(mContent, contextScale);
// 实现菜单区域缩放
float menuScale = 1.0f - scale * 0.3f;
// 实现菜单透明度变化
float menuAlpha = 0.6f + 0.4f * (1 - scale);
// 调用属性动画实现
ViewHelper.setScaleX(mMenu, menuScale);
ViewHelper.setScaleY(mMenu, menuScale);
ViewHelper.setAlpha(mMenu, menuAlpha);
}
@Override
public void initView(View item, int position, int scrollDirection) {
ViewHelper.setPivotX(item, item.getWidth() / 2);
ViewHelper.setPivotY(item, item.getHeight() / 2);
ViewHelper.setRotationX(item, -INITIAL_ROTATION_ANGLE * scrollDirection);
ViewHelper.setTranslationY(item, item.getHeight() * 2 * scrollDirection);
}
private void animateAccordion(View left, View right, float positionOffset) {
if (mState != State.IDLE) {
if (left != null) {
manageLayer(left, true);
ViewHelper.setPivotX(left, left.getMeasuredWidth());
ViewHelper.setPivotY(left, 0);
ViewHelper.setScaleX(left, 1 - positionOffset);
}
if (right != null) {
manageLayer(right, true);
ViewHelper.setPivotX(right, 0);
ViewHelper.setPivotY(right, 0);
ViewHelper.setScaleX(right, positionOffset);
}
}
}
/**
* Scale title view and move it in Flexible space
*
* @param scrollY
*/
private void updateFlexibleSpaceText(final int scrollY) {
if (!mIsToolbarShown) return;
int adjustedScrollY = scrollY;
if (scrollY < 0) {
adjustedScrollY = 0;
} else if (scrollY > mParallaxImageHeight) {
adjustedScrollY = mParallaxImageHeight;
}
float maxScale = 1.6f;
float scale =
maxScale
* ((float) (mParallaxImageHeight - mToolbarHeight) - adjustedScrollY)
/ (mParallaxImageHeight - mToolbarHeight);
if (scale < 0) {
scale = 0;
}
ViewHelper.setPivotX(mTitle, 0);
ViewHelper.setPivotY(mTitle, 0);
ViewHelper.setScaleX(mTitle, 1 + scale);
ViewHelper.setScaleY(mTitle, 1 + scale);
int maxTitleTranslation = (int) (mParallaxImageHeight * 0.4f);
int titleTranslation = (int) (maxTitleTranslation * ((float) scale / maxScale));
ViewHelper.setTranslationY(mTitle, titleTranslation);
}
protected void animateScroll(int position, float positionOffset) {
if (mState != State.IDLE) {
mRot = (float) (1 - Math.cos(2 * Math.PI * positionOffset)) / 2 * 30.0f;
ViewHelper.setRotationY(this, mState == State.GOING_RIGHT ? mRot : -mRot);
ViewHelper.setPivotX(this, getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(this, getMeasuredHeight() * 0.5f);
}
}
private void animateCube(View left, View right, float positionOffset, boolean in) {
if (mState != State.IDLE) {
if (left != null) {
manageLayer(left, true);
mRot = (in ? 90.0f : -90.0f) * positionOffset;
ViewHelper.setPivotX(left, left.getMeasuredWidth());
ViewHelper.setPivotY(left, left.getMeasuredHeight() * 0.5f);
ViewHelper.setRotationY(left, mRot);
}
if (right != null) {
manageLayer(right, true);
mRot = -(in ? 90.0f : -90.0f) * (1 - positionOffset);
ViewHelper.setPivotX(right, 0);
ViewHelper.setPivotY(right, right.getMeasuredHeight() * 0.5f);
ViewHelper.setRotationY(right, mRot);
}
}
}
@Override
protected void onTransform(View view, float position) {
final float scale = position < 0 ? position + 1f : Math.abs(1f - position);
ViewHelper.setScaleX(view, scale);
ViewHelper.setScaleY(view, scale);
ViewHelper.setPivotX(view, view.getWidth() * 0.5f);
ViewHelper.setPivotY(view, view.getHeight() * 0.5f);
ViewHelper.setAlpha(view, position < -1f || position > 1f ? 0f : 1f - (scale - 1f));
}
@Override
public void initView(View item, int position, int scrollDirection) {
ViewHelper.setPivotX(item, item.getWidth() / 2);
ViewHelper.setPivotY(item, item.getHeight() / 2);
ViewHelper.setScaleX(item, INITIAL_SCALE_FACTOR);
ViewHelper.setScaleY(item, INITIAL_SCALE_FACTOR);
ViewHelper.setTranslationY(item, item.getHeight() / 2 * scrollDirection);
ViewHelper.setAlpha(item, JazzyHelper.OPAQUE / 2);
}
@Override
protected void onTransform(View view, float position) {
final float width = view.getWidth();
final float rotation = ROT_MOD * position;
ViewHelper.setPivotX(view, width * 0.5f);
ViewHelper.setPivotY(view, 0f);
ViewHelper.setTranslationX(view, 0f);
ViewHelper.setRotation(view, rotation);
}
private void setScaleDirection(int direction) {
int screenWidth = getScreenWidth();
float pivotX;
float pivotY = getScreenHeight() * 0.5f;
if (direction == DIRECTION_LEFT) {
scrollViewMenu = scrollViewLeftMenu;
pivotX = screenWidth * 1.5f;
} else {
scrollViewMenu = scrollViewRightMenu;
pivotX = screenWidth * -0.5f;
}
ViewHelper.setPivotX(viewActivity, pivotX);
ViewHelper.setPivotY(viewActivity, pivotY);
ViewHelper.setPivotX(imageViewShadow, pivotX);
ViewHelper.setPivotY(imageViewShadow, pivotY);
scaleDirection = direction;
}
@Override
public void onScrollChanged(int scrollY, boolean firstScroll, boolean dragging) {
// Translate overlay and image
float flexibleRange = mFlexibleSpaceImageHeight - mActionBarSize;
int minOverlayTransitionY = mActionBarSize - mOverlayView.getHeight();
ViewHelper.setTranslationY(
mOverlayView, ScrollUtils.getFloat(-scrollY, minOverlayTransitionY, 0));
ViewHelper.setTranslationY(
mImageView, ScrollUtils.getFloat(-scrollY / 2, minOverlayTransitionY, 0));
// Change alpha of overlay
ViewHelper.setAlpha(mOverlayView, ScrollUtils.getFloat((float) scrollY / flexibleRange, 0, 1));
// Scale title text
float scale =
1
+ ScrollUtils.getFloat(
(flexibleRange - scrollY) / flexibleRange, 0, MAX_TEXT_SCALE_DELTA);
ViewHelper.setPivotX(mTitleView, 0);
ViewHelper.setPivotY(mTitleView, 0);
ViewHelper.setScaleX(mTitleView, scale);
ViewHelper.setScaleY(mTitleView, scale);
// Translate title text
int maxTitleTranslationY = (int) (mFlexibleSpaceImageHeight - mTitleView.getHeight() * scale);
int titleTranslationY = maxTitleTranslationY - scrollY;
ViewHelper.setTranslationY(mTitleView, titleTranslationY);
// Translate FAB
int maxFabTranslationY = mFlexibleSpaceImageHeight - mFab.getHeight() / 2;
float fabTranslationY =
ScrollUtils.getFloat(
-scrollY + mFlexibleSpaceImageHeight - mFab.getHeight() / 2,
mActionBarSize - mFab.getHeight() / 2,
maxFabTranslationY);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
// On pre-honeycomb, ViewHelper.setTranslationX/Y does not set margin,
// which causes FAB's OnClickListener not working.
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mFab.getLayoutParams();
lp.leftMargin = mOverlayView.getWidth() - mFabMargin - mFab.getWidth();
lp.topMargin = (int) fabTranslationY;
mFab.requestLayout();
} else {
ViewHelper.setTranslationX(mFab, mOverlayView.getWidth() - mFabMargin - mFab.getWidth());
ViewHelper.setTranslationY(mFab, fabTranslationY);
}
// Show/hide FAB
if (fabTranslationY < mFlexibleSpaceShowFabOffset) {
hideFab();
} else {
showFab();
}
}
@Override
protected void onTransform(View view, float position) {
final float height = view.getHeight();
final float width = view.getWidth();
final float scale = min(position > 0 ? 1f : Math.abs(1f + position), 0.5f);
ViewHelper.setScaleX(view, scale);
ViewHelper.setScaleY(view, scale);
ViewHelper.setPivotX(view, width * 0.5f);
ViewHelper.setPivotY(view, height * 0.5f);
ViewHelper.setTranslationX(view, position > 0 ? width * position : -width * position * 0.25f);
}
/**
* reset the view to default status
*
* @param target
*/
public void reset(View target) {
ViewHelper.setAlpha(target, 1);
ViewHelper.setScaleX(target, 1);
ViewHelper.setScaleY(target, 1);
ViewHelper.setTranslationX(target, 0);
ViewHelper.setTranslationY(target, 0);
ViewHelper.setRotation(target, 0);
ViewHelper.setRotationY(target, 0);
ViewHelper.setRotationX(target, 0);
ViewHelper.setPivotX(target, target.getMeasuredWidth() / 2.0f);
ViewHelper.setPivotY(target, target.getMeasuredHeight() / 2.0f);
}
@Override
protected void onTransform(View view, float position) {
final float scale = 1f + Math.abs(position);
ViewHelper.setScaleX(view, scale);
ViewHelper.setScaleY(view, scale);
ViewHelper.setPivotX(view, view.getWidth() * 0.5f);
ViewHelper.setPivotY(view, view.getWidth() * 0.5f);
ViewHelper.setAlpha(view, position < -1f || position > 1f ? 0f : 1f - (scale - 1f));
if (position < -0.9) {
// -0.9 to prevent a small bug
ViewHelper.setTranslationX(view, view.getWidth() * position);
}
}
private void translateTab(int scrollY, boolean animated) {
int flexibleSpaceImageHeight =
getResources().getDimensionPixelSize(R.dimen.flexible_space_image_height);
int tabHeight = getResources().getDimensionPixelSize(R.dimen.tab_height);
View imageView = findViewById(R.id.image);
View overlayView = findViewById(R.id.overlay);
TextView titleView = (TextView) findViewById(R.id.title);
// Translate overlay and image
float flexibleRange = flexibleSpaceImageHeight - getActionBarSize();
int minOverlayTransitionY = tabHeight - overlayView.getHeight();
ViewHelper.setTranslationY(
overlayView, ScrollUtils.getFloat(-scrollY, minOverlayTransitionY, 0));
ViewHelper.setTranslationY(
imageView, ScrollUtils.getFloat(-scrollY / 2, minOverlayTransitionY, 0));
// Change alpha of overlay
ViewHelper.setAlpha(overlayView, ScrollUtils.getFloat((float) scrollY / flexibleRange, 0, 1));
// Scale title text
float scale =
1
+ ScrollUtils.getFloat(
(flexibleRange - scrollY - tabHeight) / flexibleRange, 0, MAX_TEXT_SCALE_DELTA);
setPivotXToTitle(titleView);
ViewHelper.setPivotY(titleView, 0);
ViewHelper.setScaleX(titleView, scale);
ViewHelper.setScaleY(titleView, scale);
// Translate title text
int maxTitleTranslationY = flexibleSpaceImageHeight - tabHeight - getActionBarSize();
int titleTranslationY = maxTitleTranslationY - scrollY;
ViewHelper.setTranslationY(titleView, titleTranslationY);
// If tabs are moving, cancel it to start a new animation.
ViewPropertyAnimator.animate(mSlidingTabLayout).cancel();
// Tabs will move between the top of the screen to the bottom of the image.
float translationY =
ScrollUtils.getFloat(
-scrollY + mFlexibleSpaceHeight - mTabHeight, 0, mFlexibleSpaceHeight - mTabHeight);
if (animated) {
// Animation will be invoked only when the current tab is changed.
ViewPropertyAnimator.animate(mSlidingTabLayout)
.translationY(translationY)
.setDuration(200)
.start();
} else {
// When Fragments' scroll, translate tabs immediately (without animation).
ViewHelper.setTranslationY(mSlidingTabLayout, translationY);
}
}
protected void animateTablet(View left, View right, float positionOffset) {
if (mState != State.IDLE) {
if (left != null) {
manageLayer(left, true);
mRot = 30.0f * positionOffset;
mTrans = getOffsetXForRotation(mRot, left.getMeasuredWidth(), left.getMeasuredHeight());
ViewHelper.setPivotX(left, left.getMeasuredWidth() / 2);
ViewHelper.setPivotY(left, left.getMeasuredHeight() / 2);
ViewHelper.setTranslationX(left, mTrans);
ViewHelper.setRotationY(left, mRot);
logState(left, "Left");
}
if (right != null) {
manageLayer(right, true);
mRot = -30.0f * (1 - positionOffset);
mTrans = getOffsetXForRotation(mRot, right.getMeasuredWidth(), right.getMeasuredHeight());
ViewHelper.setPivotX(right, right.getMeasuredWidth() * 0.5f);
ViewHelper.setPivotY(right, right.getMeasuredHeight() * 0.5f);
ViewHelper.setTranslationX(right, mTrans);
ViewHelper.setRotationY(right, mRot);
logState(right, "Right");
}
}
}
public AnimationBuilder pivotY(float pivotY) {
for (View view : views) {
ViewHelper.setPivotY(view, pivotY);
}
return this;
}
public void setPivotY(float y) {
ViewHelper.setPivotY(this, y);
}
public void initView(View paramView, int paramInt1, int paramInt2) {
ViewHelper.setPivotX(paramView, paramView.getWidth() / 2);
ViewHelper.setPivotY(paramView, paramView.getHeight() / 2);
ViewHelper.setScaleX(paramView, 0.01F);
ViewHelper.setScaleY(paramView, 0.01F);
}