Examples with EdgeEffectCompat android.support.v4.widget.EdgeEffectCompat used on opensource projects

Example 1 with EdgeEffectCompat

use of android.support.v4.widget.EdgeEffectCompat in project actor-platform by actorapp.

the class VerticalViewPager method initViewPager.

void initViewPager() {
    setWillNotDraw(false);
    setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
    setFocusable(true);
    final Context context = getContext();
    mScroller = new Scroller(context, sInterpolator);
    final ViewConfiguration configuration = ViewConfiguration.get(context);
    final float density = context.getResources().getDisplayMetrics().density;
    mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
    mMinimumVelocity = (int) (MIN_FLING_VELOCITY * density);
    mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
    mTopEdge = new EdgeEffectCompat(context);
    mBottomEdge = new EdgeEffectCompat(context);
    mFlingDistance = (int) (MIN_DISTANCE_FOR_FLING * density);
    mCloseEnough = (int) (CLOSE_ENOUGH * density);
    mDefaultGutterSize = (int) (DEFAULT_GUTTER_SIZE * density);
    ViewCompat.setAccessibilityDelegate(this, new MyAccessibilityDelegate());
    if (ViewCompat.getImportantForAccessibility(this) == ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
        ViewCompat.setImportantForAccessibility(this, ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES);
    }
}

Example 2 with EdgeEffectCompat

use of android.support.v4.widget.EdgeEffectCompat in project AndroidDevelop by 7449.

the class TabView method init.

private void init() {
    // 把一个值从dip转换成px
    mIndicatorHeight = dip2px(mIndicatorHeight);
    mDividerPadding = dip2px(mDividerPadding);
    mTabPadding = dip2px(mTabPadding);
    mDividerWidth = dip2px(mDividerWidth);
    mTabTextSize = dip2px(mTabTextSize);
    // 创建一个scroller
    mScroller = ScrollerCompat.create(getContext());
    // 获取一个系统关于View的常量配置类
    final ViewConfiguration configuration = ViewConfiguration.get(getContext());
    // 获取滑动的最小距离
    mTouchSlop = configuration.getScaledTouchSlop();
    // 获取fling的最小速度
    mMinimumVelocity = configuration.getScaledMinimumFlingVelocity();
    // 获取fling的最大速度
    mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
    mLeftEdge = new EdgeEffectCompat(getContext());
    mRightEdge = new EdgeEffectCompat(getContext());
}

Example 3 with EdgeEffectCompat

use of android.support.v4.widget.EdgeEffectCompat in project JamsMusicPlayer by psaravan.

the class VelocityViewPager method initViewPager.

void initViewPager() {
    setWillNotDraw(false);
    setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
    setFocusable(true);
    final Context context = getContext();
    mScroller = new VelocityScroller(context, sInterpolator);
    final ViewConfiguration configuration = ViewConfiguration.get(context);
    final float density = context.getResources().getDisplayMetrics().density;
    mTouchSlop = ViewConfigurationCompat.getScaledPagingTouchSlop(configuration);
    mMinimumVelocity = (int) (MIN_FLING_VELOCITY * density);
    mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
    mLeftEdge = new EdgeEffectCompat(context);
    mRightEdge = new EdgeEffectCompat(context);
    mFlingDistance = (int) (MIN_DISTANCE_FOR_FLING * density);
    mCloseEnough = (int) (CLOSE_ENOUGH * density);
    mDefaultGutterSize = (int) (DEFAULT_GUTTER_SIZE * density);
    ViewCompat.setAccessibilityDelegate(this, new MyAccessibilityDelegate());
    if (ViewCompat.getImportantForAccessibility(this) == ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
        ViewCompat.setImportantForAccessibility(this, ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES);
    }
}

Example 4 with EdgeEffectCompat

use of android.support.v4.widget.EdgeEffectCompat in project android_packages_apps_OmniClock by omnirom.

the class StaggeredGridView method trackMotionScroll.

/**
 * @param deltaY Pixels that content should move by
 * @return true if the movement completed, false if it was stopped prematurely.
 */
private boolean trackMotionScroll(int deltaY, boolean allowOverScroll) {
    final boolean contentFits = contentFits();
    final int allowOverhang = Math.abs(deltaY);
    final int overScrolledBy;
    final int movedBy;
    if (!contentFits) {
        int overhang;
        final boolean up;
        mPopulating = true;
        if (deltaY > 0) {
            overhang = fillUp(mFirstPosition - 1, allowOverhang);
            up = true;
        } else {
            overhang = fillDown(mFirstPosition + getChildCount(), allowOverhang);
            if (overhang < 0) {
                // Overhang when filling down indicates how many pixels past the bottom of the
                // screen has been filled in.  If this value is negative, it should be set to
                // 0 so that we don't allow over scrolling.
                overhang = 0;
            }
            up = false;
        }
        movedBy = Math.min(overhang, allowOverhang);
        offsetChildren(up ? movedBy : -movedBy);
        recycleOffscreenViews();
        mPopulating = false;
        overScrolledBy = allowOverhang - overhang;
    } else {
        overScrolledBy = allowOverhang;
        movedBy = 0;
    }
    if (allowOverScroll) {
        final int overScrollMode = ViewCompat.getOverScrollMode(this);
        if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && !contentFits)) {
            if (overScrolledBy > 0) {
                final EdgeEffectCompat edge = deltaY > 0 ? mTopEdge : mBottomEdge;
                edge.onPull((float) Math.abs(deltaY) / getHeight());
                ViewCompat.postInvalidateOnAnimation(this);
            }
        }
    }
    awakenScrollBars(0, /* show immediately */
    true);
    return deltaY == 0 || movedBy != 0;
}

Example 5 with EdgeEffectCompat

use of android.support.v4.widget.EdgeEffectCompat in project android_packages_apps_OmniClock by omnirom.

the class StaggeredGridView method computeScroll.

@Override
public void computeScroll() {
    if (mTouchMode == TOUCH_MODE_OVERFLING) {
        handleOverfling();
    } else if (mScroller.computeScrollOffset()) {
        final int overScrollMode = ViewCompat.getOverScrollMode(this);
        final boolean supportsOverscroll = overScrollMode != ViewCompat.OVER_SCROLL_NEVER;
        final int y = mScroller.getCurrY();
        final int dy = (int) (y - mLastTouchY);
        // TODO: Figure out why mLastTouchY is being updated here. Consider using a new class
        // variable since this value does not represent the last place on the screen where a
        // touch occurred.
        mLastTouchY = y;
        // Check if the top of the motion view is where it is
        // supposed to be
        final View motionView = supportsOverscroll && getChildCount() > 0 ? getChildAt(0) : null;
        final int motionViewPrevTop = motionView != null ? motionView.getTop() : 0;
        final boolean stopped = !trackMotionScroll(dy, false);
        if (!stopped && !mScroller.isFinished()) {
            mTouchMode = TOUCH_MODE_IDLE;
            ViewCompat.postInvalidateOnAnimation(this);
        } else if (stopped && dy != 0 && supportsOverscroll) {
            // Check to see if we have bumped into the scroll limit
            if (motionView != null) {
                final int motionViewRealTop = motionView.getTop();
                // Apply overscroll
                final int overscroll = -dy - (motionViewRealTop - motionViewPrevTop);
                overScrollBy(0, overscroll, 0, getScrollY(), 0, 0, 0, mOverscrollDistance, true);
            }
            final EdgeEffectCompat edge;
            if (dy > 0) {
                edge = mTopEdge;
                mBottomEdge.finish();
            } else {
                edge = mBottomEdge;
                mTopEdge.finish();
            }
            edge.onAbsorb(Math.abs((int) mScroller.getCurrVelocity()));
            if (mScroller.computeScrollOffset()) {
                mScroller.notifyVerticalEdgeReached(getScrollY(), 0, mOverscrollDistance);
            }
            mTouchMode = TOUCH_MODE_OVERFLING;
            ViewCompat.postInvalidateOnAnimation(this);
        } else {
            mTouchMode = TOUCH_MODE_IDLE;
        }
    }
}