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Diffstat (limited to 'libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/SwipyRefreshLayout.java')
| -rw-r--r-- | libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/SwipyRefreshLayout.java | 1152 |
1 files changed, 1152 insertions, 0 deletions
diff --git a/libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/SwipyRefreshLayout.java b/libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/SwipyRefreshLayout.java new file mode 100644 index 00000000..f193a0e1 --- /dev/null +++ b/libs/SwipyRefreshLayout/src/main/java/com/orangegangsters/github/swipyrefreshlayout/library/SwipyRefreshLayout.java @@ -0,0 +1,1152 @@ +/* + * Copyright (C) 2013 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. + */ + +package com.orangegangsters.github.swipyrefreshlayout.library; + + +import android.content.Context; +import android.content.res.Resources; +import android.content.res.TypedArray; +import android.support.v4.view.MotionEventCompat; +import android.support.v4.view.ViewCompat; +import android.util.AttributeSet; +import android.util.DisplayMetrics; +import android.util.Log; +import android.view.MotionEvent; +import android.view.View; +import android.view.ViewConfiguration; +import android.view.ViewGroup; +import android.view.animation.Animation; +import android.view.animation.Animation.AnimationListener; +import android.view.animation.DecelerateInterpolator; +import android.view.animation.Transformation; +import android.widget.AbsListView; + +/** + * The SwipeRefreshLayout should be used whenever the user can refresh the + * contents of a view via a vertical swipe gesture. The activity that + * instantiates this view should add an OnRefreshListener to be notified + * whenever the swipe to refresh gesture is completed. The SwipeRefreshLayout + * will notify the listener each and every time the gesture is completed again; + * the listener is responsible for correctly determining when to actually + * initiate a refresh of its content. If the listener determines there should + * not be a refresh, it must call setRefreshing(false) to cancel any visual + * indication of a refresh. If an activity wishes to show just the progress + * animation, it should call setRefreshing(true). To disable the gesture and + * progress animation, call setEnabled(false) on the view. + * <p> + * This layout should be made the parent of the view that will be refreshed as a + * result of the gesture and can only support one direct child. This view will + * also be made the target of the gesture and will be forced to match both the + * width and the height supplied in this layout. The SwipeRefreshLayout does not + * provide accessibility events; instead, a menu item must be provided to allow + * refresh of the content wherever this gesture is used. + * </p> + */ +public class SwipyRefreshLayout extends ViewGroup { + + public static final String TAG = "SwipyRefreshLayout"; + + private static final float MAX_SWIPE_DISTANCE_FACTOR = .6f; + private static final int REFRESH_TRIGGER_DISTANCE = 120; + + // Maps to ProgressBar.Large style + public static final int LARGE = MaterialProgressDrawable.LARGE; + // Maps to ProgressBar default style + public static final int DEFAULT = MaterialProgressDrawable.DEFAULT; + + private static final String LOG_TAG = SwipyRefreshLayout.class.getSimpleName(); + + private static final int MAX_ALPHA = 255; + private static final int STARTING_PROGRESS_ALPHA = (int) (.3f * MAX_ALPHA); + + private static final int CIRCLE_DIAMETER = 40; + private static final int CIRCLE_DIAMETER_LARGE = 56; + + private static final float DECELERATE_INTERPOLATION_FACTOR = 2f; + private static final int INVALID_POINTER = -1; + private static final float DRAG_RATE = .5f; + + // Max amount of circle that can be filled by progress during swipe gesture, + // where 1.0 is a full circle + private static final float MAX_PROGRESS_ANGLE = .8f; + + private static final int SCALE_DOWN_DURATION = 150; + + private static final int ALPHA_ANIMATION_DURATION = 300; + + private static final int ANIMATE_TO_TRIGGER_DURATION = 200; + + private static final int ANIMATE_TO_START_DURATION = 200; + + // Default background for the progress spinner + private static final int CIRCLE_BG_LIGHT = 0xFFFAFAFA; + // Default offset in dips from the top of the view to where the progress spinner should stop + private static final int DEFAULT_CIRCLE_TARGET = 64; + + private View mTarget; // the target of the gesture + private SwipyRefreshLayoutDirection mDirection; + private boolean mBothDirection; + private OnRefreshListener mListener; + private boolean mRefreshing = false; + private int mTouchSlop; + private float mTotalDragDistance = -1; + private int mMediumAnimationDuration; + private int mCurrentTargetOffsetTop; + // Whether or not the starting offset has been determined. + private boolean mOriginalOffsetCalculated = false; + + private float mInitialMotionY; + private float mInitialDownY; + private boolean mIsBeingDragged; + private int mActivePointerId = INVALID_POINTER; + // Whether this item is scaled up rather than clipped + private boolean mScale; + + // Target is returning to its start offset because it was cancelled or a + // refresh was triggered. + private boolean mReturningToStart; + private final DecelerateInterpolator mDecelerateInterpolator; + private static final int[] LAYOUT_ATTRS = new int[]{ + android.R.attr.enabled + }; + + private CircleImageView mCircleView; + private int mCircleViewIndex = -1; + + protected int mFrom; + + private float mStartingScale; + + protected int mOriginalOffsetTop; + + private MaterialProgressDrawable mProgress; + + private Animation mScaleAnimation; + + private Animation mScaleDownAnimation; + + private Animation mAlphaStartAnimation; + + private Animation mAlphaMaxAnimation; + + private Animation mScaleDownToStartAnimation; + + private float mSpinnerFinalOffset; + + private boolean mNotify; + + private int mCircleWidth; + + private int mCircleHeight; + + // Whether the client has set a custom starting position; + private boolean mUsingCustomStart; + + private AnimationListener mRefreshListener = new AnimationListener() { + @Override + public void onAnimationStart(Animation animation) { + } + + @Override + public void onAnimationRepeat(Animation animation) { + } + + @Override + public void onAnimationEnd(Animation animation) { + if (mRefreshing) { + // Make sure the progress view is fully visible + mProgress.setAlpha(MAX_ALPHA); + mProgress.start(); + if (mNotify) { + if (mListener != null) { + mListener.onRefresh(mDirection); + } + } + } else { + mProgress.stop(); + mCircleView.setVisibility(View.GONE); + setColorViewAlpha(MAX_ALPHA); + // Return the circle to its start position + if (mScale) { + setAnimationProgress(0 /* animation complete and view is hidden */); + } else { + setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCurrentTargetOffsetTop, + true /* requires update */); + } + } + mCurrentTargetOffsetTop = mCircleView.getTop(); + } + }; + + private void setColorViewAlpha(int targetAlpha) { + mCircleView.getBackground().setAlpha(targetAlpha); + mProgress.setAlpha(targetAlpha); + } + + /** + * The refresh indicator starting and resting position is always positioned + * near the top of the refreshing content. This position is a consistent + * location, but can be adjusted in either direction based on whether or not + * there is a toolbar or actionbar present. + * + * @param scale Set to true if there is no view at a higher z-order than + * where the progress spinner is set to appear. + * @param start The offset in pixels from the top of this view at which the + * progress spinner should appear. + * @param end The offset in pixels from the top of this view at which the + * progress spinner should come to rest after a successful swipe + * gesture. + */ + /* + public void setProgressViewOffset(boolean scale, int start, int end) { + mScale = scale; + mCircleView.setVisibility(View.GONE); + mOriginalOffsetTop = mCurrentTargetOffsetTop = start; + mSpinnerFinalOffset = end; + mUsingCustomStart = true; + mCircleView.invalidate(); + }*/ + + /** + * The refresh indicator resting position is always positioned near the top + * of the refreshing content. This position is a consistent location, but + * can be adjusted in either direction based on whether or not there is a + * toolbar or actionbar present. + * + * @param scale Set to true if there is no view at a higher z-order than + * where the progress spinner is set to appear. + * @param end The offset in pixels from the top of this view at which the + * progress spinner should come to rest after a successful swipe + * gesture. + */ + /* + public void setProgressViewEndTarget(boolean scale, int end) { + mSpinnerFinalOffset = end; + mScale = scale; + mCircleView.invalidate(); + }*/ + + /** + * One of DEFAULT, or LARGE. + */ + public void setSize(int size) { + if (size != MaterialProgressDrawable.LARGE && size != MaterialProgressDrawable.DEFAULT) { + return; + } + final DisplayMetrics metrics = getResources().getDisplayMetrics(); + if (size == MaterialProgressDrawable.LARGE) { + mCircleHeight = mCircleWidth = (int) (CIRCLE_DIAMETER_LARGE * metrics.density); + } else { + mCircleHeight = mCircleWidth = (int) (CIRCLE_DIAMETER * metrics.density); + } + // force the bounds of the progress circle inside the circle view to + // update by setting it to null before updating its size and then + // re-setting it + mCircleView.setImageDrawable(null); + mProgress.updateSizes(size); + mCircleView.setImageDrawable(mProgress); + } + + /** + * Simple constructor to use when creating a SwipeRefreshLayout from code. + * + * @param context + */ + public SwipyRefreshLayout(Context context) { + this(context, null); + } + + /** + * Constructor that is called when inflating SwipeRefreshLayout from XML. + * + * @param context + * @param attrs + */ + public SwipyRefreshLayout(Context context, AttributeSet attrs) { + super(context, attrs); + + mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); + + mMediumAnimationDuration = getResources().getInteger( + android.R.integer.config_mediumAnimTime); + + setWillNotDraw(false); + mDecelerateInterpolator = new DecelerateInterpolator(DECELERATE_INTERPOLATION_FACTOR); + + final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS); + setEnabled(a.getBoolean(0, true)); + a.recycle(); + + final TypedArray a2 = context.obtainStyledAttributes(attrs, R.styleable.SwipyRefreshLayout); + SwipyRefreshLayoutDirection direction + = SwipyRefreshLayoutDirection.getFromInt(a2.getInt(R.styleable.SwipyRefreshLayout_direction, 0)); + if (direction != SwipyRefreshLayoutDirection.BOTH) { + mDirection = direction; + mBothDirection = false; + } else { + mDirection = SwipyRefreshLayoutDirection.TOP; + mBothDirection = true; + } + a2.recycle(); + + final DisplayMetrics metrics = getResources().getDisplayMetrics(); + mCircleWidth = (int) (CIRCLE_DIAMETER * metrics.density); + mCircleHeight = (int) (CIRCLE_DIAMETER * metrics.density); + + createProgressView(); + ViewCompat.setChildrenDrawingOrderEnabled(this, true); + // the absolute offset has to take into account that the circle starts at an offset + mSpinnerFinalOffset = DEFAULT_CIRCLE_TARGET * metrics.density; + } + + protected int getChildDrawingOrder(int childCount, int i) { + if (mCircleViewIndex < 0) { + return i; + } else if (i == childCount - 1) { + // Draw the selected child last + return mCircleViewIndex; + } else if (i >= mCircleViewIndex) { + // Move the children after the selected child earlier one + return i + 1; + } else { + // Keep the children before the selected child the same + return i; + } + } + + private void createProgressView() { + mCircleView = new CircleImageView(getContext(), CIRCLE_BG_LIGHT, CIRCLE_DIAMETER / 2); + mProgress = new MaterialProgressDrawable(getContext(), this); + mProgress.setBackgroundColor(CIRCLE_BG_LIGHT); + mCircleView.setImageDrawable(mProgress); + mCircleView.setVisibility(View.GONE); + addView(mCircleView); + } + + /** + * Set the listener to be notified when a refresh is triggered via the swipe + * gesture. + */ + public void setOnRefreshListener(OnRefreshListener listener) { + mListener = listener; + } + + /** + * Pre API 11, alpha is used to make the progress circle appear instead of scale. + */ + private boolean isAlphaUsedForScale() { + return android.os.Build.VERSION.SDK_INT < 11; + } + + /** + * Notify the widget that refresh state has changed. Do not call this when + * refresh is triggered by a swipe gesture. + * + * @param refreshing Whether or not the view should show refresh progress. + */ + public void setRefreshing(boolean refreshing) { + if (refreshing && mRefreshing != refreshing) { + // scale and show + mRefreshing = refreshing; + int endTarget = 0; + if (!mUsingCustomStart) { + switch (mDirection) { + case BOTTOM: + endTarget = getMeasuredHeight() - (int) (mSpinnerFinalOffset); + break; + case TOP: + default: + endTarget = (int) (mSpinnerFinalOffset - Math.abs(mOriginalOffsetTop)); + break; + } + } else { + endTarget = (int) mSpinnerFinalOffset; + } + setTargetOffsetTopAndBottom(endTarget - mCurrentTargetOffsetTop, + true /* requires update */); + mNotify = false; + startScaleUpAnimation(mRefreshListener); + } else { + setRefreshing(refreshing, false /* notify */); + } + } + + private void startScaleUpAnimation(AnimationListener listener) { + mCircleView.setVisibility(View.VISIBLE); + if (android.os.Build.VERSION.SDK_INT >= 11) { + // Pre API 11, alpha is used in place of scale up to show the + // progress circle appearing. + // Don't adjust the alpha during appearance otherwise. + mProgress.setAlpha(MAX_ALPHA); + } + mScaleAnimation = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + setAnimationProgress(interpolatedTime); + } + }; + mScaleAnimation.setDuration(mMediumAnimationDuration); + if (listener != null) { + mCircleView.setAnimationListener(listener); + } + mCircleView.clearAnimation(); + mCircleView.startAnimation(mScaleAnimation); + } + + /** + * Pre API 11, this does an alpha animation. + * + * @param progress + */ + private void setAnimationProgress(float progress) { + if (isAlphaUsedForScale()) { + setColorViewAlpha((int) (progress * MAX_ALPHA)); + } else { + ViewCompat.setScaleX(mCircleView, progress); + ViewCompat.setScaleY(mCircleView, progress); + } + } + + private void setRefreshing(boolean refreshing, final boolean notify) { + if (mRefreshing != refreshing) { + mNotify = notify; + ensureTarget(); + mRefreshing = refreshing; + if (mRefreshing) { + animateOffsetToCorrectPosition(mCurrentTargetOffsetTop, mRefreshListener); + } else { + startScaleDownAnimation(mRefreshListener); + } + } + } + + private void startScaleDownAnimation(AnimationListener listener) { + mScaleDownAnimation = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + setAnimationProgress(1 - interpolatedTime); + } + }; + mScaleDownAnimation.setDuration(SCALE_DOWN_DURATION); + mCircleView.setAnimationListener(listener); + mCircleView.clearAnimation(); + mCircleView.startAnimation(mScaleDownAnimation); + } + + private void startProgressAlphaStartAnimation() { + mAlphaStartAnimation = startAlphaAnimation(mProgress.getAlpha(), STARTING_PROGRESS_ALPHA); + } + + private void startProgressAlphaMaxAnimation() { + mAlphaMaxAnimation = startAlphaAnimation(mProgress.getAlpha(), MAX_ALPHA); + } + + private Animation startAlphaAnimation(final int startingAlpha, final int endingAlpha) { + // Pre API 11, alpha is used in place of scale. Don't also use it to + // show the trigger point. + if (mScale && isAlphaUsedForScale()) { + return null; + } + Animation alpha = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + mProgress + .setAlpha((int) (startingAlpha + ((endingAlpha - startingAlpha) + * interpolatedTime))); + } + }; + alpha.setDuration(ALPHA_ANIMATION_DURATION); + // Clear out the previous animation listeners. + mCircleView.setAnimationListener(null); + mCircleView.clearAnimation(); + mCircleView.startAnimation(alpha); + return alpha; + } + + /** + * Set the background color of the progress spinner disc. + * + * @param colorRes Resource id of the color. + */ + public void setProgressBackgroundColor(int colorRes) { + mCircleView.setBackgroundColor(colorRes); + mProgress.setBackgroundColor(getResources().getColor(colorRes)); + } + + /** + * @deprecated Use {@link #setColorSchemeResources(int...)} + */ + @Deprecated + public void setColorScheme(int... colors) { + setColorSchemeResources(colors); + } + + /** + * Set the color resources used in the progress animation from color resources. + * The first color will also be the color of the bar that grows in response + * to a user swipe gesture. + * + * @param colorResIds + */ + public void setColorSchemeResources(int... colorResIds) { + final Resources res = getResources(); + int[] colorRes = new int[colorResIds.length]; + for (int i = 0; i < colorResIds.length; i++) { + colorRes[i] = res.getColor(colorResIds[i]); + } + setColorSchemeColors(colorRes); + } + + /** + * Set the colors used in the progress animation. The first + * color will also be the color of the bar that grows in response to a user + * swipe gesture. + * + * @param colors + */ + public void setColorSchemeColors(int... colors) { + ensureTarget(); + mProgress.setColorSchemeColors(colors); + } + + /** + * @return Whether the SwipeRefreshWidget is actively showing refresh + * progress. + */ + public boolean isRefreshing() { + return mRefreshing; + } + + private void ensureTarget() { + // Don't bother getting the parent height if the parent hasn't been laid + // out yet. + if (mTarget == null) { + for (int i = 0; i < getChildCount(); i++) { + View child = getChildAt(i); + if (!child.equals(mCircleView)) { + mTarget = child; + break; + } + } + } + if (mTotalDragDistance == -1) { + if (getParent() != null && ((View) getParent()).getHeight() > 0) { + final DisplayMetrics metrics = getResources().getDisplayMetrics(); + mTotalDragDistance = (int) Math.min( + ((View) getParent()).getHeight() * MAX_SWIPE_DISTANCE_FACTOR, + REFRESH_TRIGGER_DISTANCE * metrics.density); + } + } + } + + /** + * Set the distance to trigger a sync in dips + * + * @param distance + */ + public void setDistanceToTriggerSync(int distance) { + mTotalDragDistance = distance; + } + + @Override + protected void onLayout(boolean changed, int left, int top, int right, int bottom) { + final int width = getMeasuredWidth(); + final int height = getMeasuredHeight(); + if (getChildCount() == 0) { + return; + } + if (mTarget == null) { + ensureTarget(); + } + if (mTarget == null) { + return; + } + final View child = mTarget; + final int childLeft = getPaddingLeft(); + final int childTop = getPaddingTop(); + final int childWidth = width - getPaddingLeft() - getPaddingRight(); + final int childHeight = height - getPaddingTop() - getPaddingBottom(); + child.layout(childLeft, childTop, childLeft + childWidth, childTop + childHeight); + int circleWidth = mCircleView.getMeasuredWidth(); + int circleHeight = mCircleView.getMeasuredHeight(); + mCircleView.layout((width / 2 - circleWidth / 2), mCurrentTargetOffsetTop, + (width / 2 + circleWidth / 2), mCurrentTargetOffsetTop + circleHeight); + } + + @Override + public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { + super.onMeasure(widthMeasureSpec, heightMeasureSpec); + if (mTarget == null) { + ensureTarget(); + } + if (mTarget == null) { + return; + } + mTarget.measure(MeasureSpec.makeMeasureSpec( + getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), + MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec( + getMeasuredHeight() - getPaddingTop() - getPaddingBottom(), MeasureSpec.EXACTLY)); + mCircleView.measure(MeasureSpec.makeMeasureSpec(mCircleWidth, MeasureSpec.EXACTLY), + MeasureSpec.makeMeasureSpec(mCircleHeight, MeasureSpec.EXACTLY)); + if (!mUsingCustomStart && !mOriginalOffsetCalculated) { + mOriginalOffsetCalculated = true; + + switch (mDirection) { + case BOTTOM: + mCurrentTargetOffsetTop = mOriginalOffsetTop = getMeasuredHeight(); + break; + case TOP: + default: + mCurrentTargetOffsetTop = mOriginalOffsetTop = -mCircleView.getMeasuredHeight(); + break; + } + } + mCircleViewIndex = -1; + // Get the index of the circleview. + for (int index = 0; index < getChildCount(); index++) { + if (getChildAt(index) == mCircleView) { + mCircleViewIndex = index; + break; + } + } + } + + /** + * @return Whether it is possible for the child view of this layout to + * scroll up. Override this if the child view is a custom view. + */ + public boolean canChildScrollUp() { + if (android.os.Build.VERSION.SDK_INT < 14) { + if (mTarget instanceof AbsListView) { + final AbsListView absListView = (AbsListView) mTarget; + return absListView.getChildCount() > 0 + && (absListView.getFirstVisiblePosition() > 0 || absListView.getChildAt(0) + .getTop() < absListView.getPaddingTop()); + } else { + return mTarget.getScrollY() > 0; + } + } else { + return ViewCompat.canScrollVertically(mTarget, -1); + } + } +// public boolean canChildScrollUp() { +// if (android.os.Build.VERSION.SDK_INT < 14) { +// if (mTarget instanceof AbsListView) { +// final AbsListView absListView = (AbsListView) mTarget; +// if (absListView.getLastVisiblePosition() + 1 == absListView.getCount()) { +// int lastIndex = absListView.getLastVisiblePosition() - absListView.getFirstVisiblePosition(); +// +// boolean res = absListView.getChildAt(lastIndex).getBottom() == absListView.getPaddingBottom(); +// +// return res; +// } +// return true; +// } else { +// return mTarget.getScrollY() > 0; +// } +// } else { +// return ViewCompat.canScrollVertically(mTarget, 1); +// } +// } + + + public boolean canChildScrollDown() { + if (android.os.Build.VERSION.SDK_INT < 14) { + if (mTarget instanceof AbsListView) { + final AbsListView absListView = (AbsListView) mTarget; + try { + if (absListView.getCount() > 0) { + if (absListView.getLastVisiblePosition() + 1 == absListView.getCount()) { + int lastIndex = absListView.getLastVisiblePosition() - absListView.getFirstVisiblePosition(); + return absListView.getChildAt(lastIndex).getBottom() == absListView.getPaddingBottom(); + } + } + } catch (Exception e) { + e.printStackTrace(); + } + return true; + } else { + return true; + } + } else { + return ViewCompat.canScrollVertically(mTarget, 1); + } + } + + @Override + public boolean onInterceptTouchEvent(MotionEvent ev) { + ensureTarget(); + + final int action = MotionEventCompat.getActionMasked(ev); + + if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { + mReturningToStart = false; + } + + switch (mDirection) { + case BOTTOM: + if (!isEnabled() || mReturningToStart || (!mBothDirection && canChildScrollDown()) || mRefreshing) { + // Fail fast if we're not in a state where a swipe is possible + return false; + } + break; + case TOP: + default: + if (!isEnabled() || mReturningToStart || (!mBothDirection && canChildScrollUp()) || mRefreshing) { + // Fail fast if we're not in a state where a swipe is possible + return false; + } + break; + } + + switch (action) { + case MotionEvent.ACTION_DOWN: + setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true); + mActivePointerId = MotionEventCompat.getPointerId(ev, 0); + mIsBeingDragged = false; + final float initialDownY = getMotionEventY(ev, mActivePointerId); + if (initialDownY == -1) { + return false; + } + mInitialDownY = initialDownY; + + case MotionEvent.ACTION_MOVE: + if (mActivePointerId == INVALID_POINTER) { + return false; + } + + final float y = getMotionEventY(ev, mActivePointerId); + if (y == -1) { + return false; + } + if (mBothDirection) { + if (y > mInitialDownY) { + setRawDirection(SwipyRefreshLayoutDirection.TOP); + } else if (y < mInitialDownY) { + setRawDirection(SwipyRefreshLayoutDirection.BOTTOM); + } + if ((mDirection == SwipyRefreshLayoutDirection.BOTTOM && canChildScrollDown()) + || (mDirection == SwipyRefreshLayoutDirection.TOP && canChildScrollUp())) { + mInitialDownY = y; + return false; + } + } + float yDiff; + switch (mDirection) { + case BOTTOM: + yDiff = mInitialDownY - y; + break; + case TOP: + default: + yDiff = y - mInitialDownY; + break; + } + if (yDiff > mTouchSlop && !mIsBeingDragged) { + switch (mDirection) { + case BOTTOM: + mInitialMotionY = mInitialDownY - mTouchSlop; + break; + case TOP: + default: + mInitialMotionY = mInitialDownY + mTouchSlop; + break; + } + mIsBeingDragged = true; + mProgress.setAlpha(STARTING_PROGRESS_ALPHA); + } + break; + + case MotionEventCompat.ACTION_POINTER_UP: + onSecondaryPointerUp(ev); + break; + + case MotionEvent.ACTION_UP: + case MotionEvent.ACTION_CANCEL: + mIsBeingDragged = false; + mActivePointerId = INVALID_POINTER; + break; + } + + return mIsBeingDragged; + } + + private float getMotionEventY(MotionEvent ev, int activePointerId) { + final int index = MotionEventCompat.findPointerIndex(ev, activePointerId); + if (index < 0) { + return -1; + } + return MotionEventCompat.getY(ev, index); + } + + @Override + public void requestDisallowInterceptTouchEvent(boolean b) { + // Nope. + } + + private boolean isAnimationRunning(Animation animation) { + return animation != null && animation.hasStarted() && !animation.hasEnded(); + } + + @Override + public boolean onTouchEvent(MotionEvent ev) { + try { + final int action = MotionEventCompat.getActionMasked(ev); + + if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { + mReturningToStart = false; + } + + switch (mDirection) { + case BOTTOM: + if (!isEnabled() || mReturningToStart || canChildScrollDown() || mRefreshing) { + // Fail fast if we're not in a state where a swipe is possible + return false; + } + break; + case TOP: + default: + if (!isEnabled() || mReturningToStart || canChildScrollUp() || mRefreshing) { + // Fail fast if we're not in a state where a swipe is possible + return false; + } + break; + } + + switch (action) { + case MotionEvent.ACTION_DOWN: + mActivePointerId = MotionEventCompat.getPointerId(ev, 0); + mIsBeingDragged = false; + break; + + case MotionEvent.ACTION_MOVE: { + final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); + if (pointerIndex < 0) { + return false; + } + + final float y = MotionEventCompat.getY(ev, pointerIndex); + + float overscrollTop; + switch (mDirection) { + case BOTTOM: + overscrollTop = (mInitialMotionY - y) * DRAG_RATE; + break; + case TOP: + default: + overscrollTop = (y - mInitialMotionY) * DRAG_RATE; + break; + } + if (mIsBeingDragged) { + mProgress.showArrow(true); + float originalDragPercent = overscrollTop / mTotalDragDistance; + if (originalDragPercent < 0) { + return false; + } + float dragPercent = Math.min(1f, Math.abs(originalDragPercent)); + float adjustedPercent = (float) Math.max(dragPercent - .4, 0) * 5 / 3; + float extraOS = Math.abs(overscrollTop) - mTotalDragDistance; + float slingshotDist = mUsingCustomStart ? mSpinnerFinalOffset + - mOriginalOffsetTop : mSpinnerFinalOffset; + float tensionSlingshotPercent = Math.max(0, + Math.min(extraOS, slingshotDist * 2) / slingshotDist); + float tensionPercent = (float) ((tensionSlingshotPercent / 4) - Math.pow( + (tensionSlingshotPercent / 4), 2)) * 2f; + float extraMove = (slingshotDist) * tensionPercent * 2; + + // int targetY = mOriginalOffsetTop + (int) ((slingshotDist * dragPercent) + extraMove); + int targetY; + if (mDirection == SwipyRefreshLayoutDirection.TOP) { + targetY = mOriginalOffsetTop + (int) ((slingshotDist * dragPercent) + extraMove); + } else { + targetY = mOriginalOffsetTop - (int) ((slingshotDist * dragPercent) + extraMove); + } + // where 1.0f is a full circle + if (mCircleView.getVisibility() != View.VISIBLE) { + mCircleView.setVisibility(View.VISIBLE); + } + if (!mScale) { + ViewCompat.setScaleX(mCircleView, 1f); + ViewCompat.setScaleY(mCircleView, 1f); + } + if (overscrollTop < mTotalDragDistance) { + if (mScale) { + setAnimationProgress(overscrollTop / mTotalDragDistance); + } + if (mProgress.getAlpha() > STARTING_PROGRESS_ALPHA + && !isAnimationRunning(mAlphaStartAnimation)) { + // Animate the alpha + startProgressAlphaStartAnimation(); + } + float strokeStart = (float) (adjustedPercent * .8f); + mProgress.setStartEndTrim(0f, Math.min(MAX_PROGRESS_ANGLE, strokeStart)); + mProgress.setArrowScale(Math.min(1f, adjustedPercent)); + } else { + if (mProgress.getAlpha() < MAX_ALPHA + && !isAnimationRunning(mAlphaMaxAnimation)) { + // Animate the alpha + startProgressAlphaMaxAnimation(); + } + } + float rotation = (-0.25f + .4f * adjustedPercent + tensionPercent * 2) * .5f; + mProgress.setProgressRotation(rotation); + setTargetOffsetTopAndBottom(targetY - mCurrentTargetOffsetTop, + true /* requires update */); + } + break; + } + case MotionEventCompat.ACTION_POINTER_DOWN: { + final int index = MotionEventCompat.getActionIndex(ev); + mActivePointerId = MotionEventCompat.getPointerId(ev, index); + break; + } + + case MotionEventCompat.ACTION_POINTER_UP: + onSecondaryPointerUp(ev); + break; + + case MotionEvent.ACTION_UP: + case MotionEvent.ACTION_CANCEL: { + if (mActivePointerId == INVALID_POINTER) { + if (action == MotionEvent.ACTION_UP) { + } + return false; + } + final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); + final float y = MotionEventCompat.getY(ev, pointerIndex); + + float overscrollTop; + switch (mDirection) { + case BOTTOM: + overscrollTop = (mInitialMotionY - y) * DRAG_RATE; + break; + case TOP: + default: + overscrollTop = (y - mInitialMotionY) * DRAG_RATE; + break; + } + mIsBeingDragged = false; + if (overscrollTop > mTotalDragDistance) { + setRefreshing(true, true /* notify */); + } else { + // cancel refresh + mRefreshing = false; + mProgress.setStartEndTrim(0f, 0f); + AnimationListener listener = null; + if (!mScale) { + listener = new AnimationListener() { + + @Override + public void onAnimationStart(Animation animation) { + } + + @Override + public void onAnimationEnd(Animation animation) { + if (!mScale) { + startScaleDownAnimation(null); + } + } + + @Override + public void onAnimationRepeat(Animation animation) { + } + + }; + } + animateOffsetToStartPosition(mCurrentTargetOffsetTop, listener); + mProgress.showArrow(false); + } + mActivePointerId = INVALID_POINTER; + return false; + } + } + } catch (Exception e) { + Log.e(TAG, "An exception occured during SwipyRefreshLayout onTouchEvent " + e.toString()); + } + + return true; + } + + private void animateOffsetToCorrectPosition(int from, AnimationListener listener) { + mFrom = from; + mAnimateToCorrectPosition.reset(); + mAnimateToCorrectPosition.setDuration(ANIMATE_TO_TRIGGER_DURATION); + mAnimateToCorrectPosition.setInterpolator(mDecelerateInterpolator); + if (listener != null) { + mCircleView.setAnimationListener(listener); + } + mCircleView.clearAnimation(); + mCircleView.startAnimation(mAnimateToCorrectPosition); + } + + private void animateOffsetToStartPosition(int from, AnimationListener listener) { + if (mScale) { + // Scale the item back down + startScaleDownReturnToStartAnimation(from, listener); + } else { + mFrom = from; + mAnimateToStartPosition.reset(); + mAnimateToStartPosition.setDuration(ANIMATE_TO_START_DURATION); + mAnimateToStartPosition.setInterpolator(mDecelerateInterpolator); + if (listener != null) { + mCircleView.setAnimationListener(listener); + } + mCircleView.clearAnimation(); + mCircleView.startAnimation(mAnimateToStartPosition); + } + } + + private final Animation mAnimateToCorrectPosition = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + int targetTop = 0; + int endTarget = 0; + if (!mUsingCustomStart) { + switch (mDirection) { + case BOTTOM: + endTarget = getMeasuredHeight() - (int) (mSpinnerFinalOffset); + break; + case TOP: + default: + endTarget = (int) (mSpinnerFinalOffset - Math.abs(mOriginalOffsetTop)); + break; + } + } else { + endTarget = (int) mSpinnerFinalOffset; + } + targetTop = (mFrom + (int) ((endTarget - mFrom) * interpolatedTime)); + int offset = targetTop - mCircleView.getTop(); + setTargetOffsetTopAndBottom(offset, false /* requires update */); + } + }; + + private void moveToStart(float interpolatedTime) { + int targetTop = 0; + targetTop = (mFrom + (int) ((mOriginalOffsetTop - mFrom) * interpolatedTime)); + int offset = targetTop - mCircleView.getTop(); + setTargetOffsetTopAndBottom(offset, false /* requires update */); + } + + private final Animation mAnimateToStartPosition = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + moveToStart(interpolatedTime); + } + }; + + private void startScaleDownReturnToStartAnimation(int from, + AnimationListener listener) { + mFrom = from; + if (isAlphaUsedForScale()) { + mStartingScale = mProgress.getAlpha(); + } else { + mStartingScale = ViewCompat.getScaleX(mCircleView); + } + mScaleDownToStartAnimation = new Animation() { + @Override + public void applyTransformation(float interpolatedTime, Transformation t) { + float targetScale = (mStartingScale + (-mStartingScale * interpolatedTime)); + setAnimationProgress(targetScale); + moveToStart(interpolatedTime); + } + }; + mScaleDownToStartAnimation.setDuration(SCALE_DOWN_DURATION); + if (listener != null) { + mCircleView.setAnimationListener(listener); + } + mCircleView.clearAnimation(); + mCircleView.startAnimation(mScaleDownToStartAnimation); + } + + private void setTargetOffsetTopAndBottom(int offset, boolean requiresUpdate) { + mCircleView.bringToFront(); + mCircleView.offsetTopAndBottom(offset); + +// switch (mDirection) { +// case BOTTOM: +// mCurrentTargetOffsetTop = getMeasuredHeight() - mCircleView.getMeasuredHeight(); +// break; +// case TOP: +// default: +// mCurrentTargetOffsetTop = mCircleView.getTop(); +// break; +// } + mCurrentTargetOffsetTop = mCircleView.getTop(); + if (requiresUpdate && android.os.Build.VERSION.SDK_INT < 11) { + invalidate(); + } + } + + private void onSecondaryPointerUp(MotionEvent ev) { + final int pointerIndex = MotionEventCompat.getActionIndex(ev); + final int pointerId = MotionEventCompat.getPointerId(ev, pointerIndex); + if (pointerId == mActivePointerId) { + // This was our active pointer going up. Choose a new + // active pointer and adjust accordingly. + final int newPointerIndex = pointerIndex == 0 ? 1 : 0; + mActivePointerId = MotionEventCompat.getPointerId(ev, newPointerIndex); + } + } + + /** + * Classes that wish to be notified when the swipe gesture correctly + * triggers a refresh should implement this interface. + */ + public interface OnRefreshListener { + public void onRefresh(SwipyRefreshLayoutDirection direction); + } + + public SwipyRefreshLayoutDirection getDirection() { + return mBothDirection ? SwipyRefreshLayoutDirection.BOTH : mDirection; + } + + public void setDirection(SwipyRefreshLayoutDirection direction) { + if (direction == SwipyRefreshLayoutDirection.BOTH) { + mBothDirection = true; + } else { + mBothDirection = false; + mDirection = direction; + } + + switch (mDirection) { + case BOTTOM: + mCurrentTargetOffsetTop = mOriginalOffsetTop = getMeasuredHeight(); + break; + case TOP: + default: + mCurrentTargetOffsetTop = mOriginalOffsetTop = -mCircleView.getMeasuredHeight(); + break; + } + } + + // only TOP or Bottom + private void setRawDirection(SwipyRefreshLayoutDirection direction) { + if (mDirection == direction) { + return; + } + + mDirection = direction; + switch (mDirection) { + case BOTTOM: + mCurrentTargetOffsetTop = mOriginalOffsetTop = getMeasuredHeight(); + break; + case TOP: + default: + mCurrentTargetOffsetTop = mOriginalOffsetTop = -mCircleView.getMeasuredHeight(); + break; + } + } +} |