Example usage for android.support.v4.view MotionEventCompat ACTION_SCROLL

Introduction

In this page you can find the example usage for android.support.v4.view MotionEventCompat ACTION_SCROLL.

Prototype

int ACTION_SCROLL

To view the source code for android.support.v4.view MotionEventCompat ACTION_SCROLL.

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Document

Synonym for MotionEvent#ACTION_SCROLL .

Usage

From source file:org.mariotaku.twidere.view.RecyclerViewBackport.java

@Override
public boolean onGenericMotionEvent(MotionEvent event) {
    final LayoutManager lm = getLayoutManager();
    if (lm == null) {
        return false;
    }/*www . j  a  v a 2s  .c  o m*/
    if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) {
        if (event.getAction() == MotionEventCompat.ACTION_SCROLL) {
            final float vScroll, hScroll;
            if (lm.canScrollVertically()) {
                vScroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
                if (!mMouseScrollDirectionDecider.isVerticalAvailable()) {
                    mMouseScrollDirectionDecider.guessDirection(event);
                }
            } else {
                vScroll = 0f;
            }
            if (lm.canScrollHorizontally()) {
                hScroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL);
                if (!mMouseScrollDirectionDecider.isHorizontalAvailable()) {
                    mMouseScrollDirectionDecider.guessDirection(event);
                }
            } else {
                hScroll = 0f;
            }
            if ((vScroll != 0 || hScroll != 0)) {
                final float scrollFactor = getScrollFactorBackport();
                float horizontalDirection = mMouseScrollDirectionDecider.getHorizontalDirection();
                float verticalDirection = mMouseScrollDirectionDecider.getVerticalDirection();
                final float hFactor = scrollFactor * (horizontalDirection != 0 ? horizontalDirection : -1);
                final float vFactor = scrollFactor * (verticalDirection != 0 ? verticalDirection : -1);
                smoothScrollBy((int) (hScroll * hFactor), (int) (vScroll * vFactor));
            }
        }
    }
    return false;
}

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From source file:org.mariotaku.twidere.view.ExtendedRecyclerView.java

@Override
public boolean onGenericMotionEvent(MotionEvent event) {
    final LayoutManager lm = getLayoutManager();
    if (lm == null) {
        return false;
    }/*from  w  w  w.  j ava 2  s.  c o  m*/
    if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) {
        if (event.getAction() == MotionEventCompat.ACTION_SCROLL) {
            final float vScroll, hScroll;
            if (lm.canScrollVertically()) {
                vScroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
                if (!mMouseScrollDirectionDecider.isVerticalAvailable()) {
                    mMouseScrollDirectionDecider.guessDirection(event);
                }
            } else {
                vScroll = 0f;
            }
            if (lm.canScrollHorizontally()) {
                hScroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL);
                if (!mMouseScrollDirectionDecider.isHorizontalAvailable()) {
                    mMouseScrollDirectionDecider.guessDirection(event);
                }
            } else {
                hScroll = 0f;
            }
            if ((vScroll != 0 || hScroll != 0)) {
                final float scrollFactor = getScrollFactorBackport();
                float horizontalDirection = mMouseScrollDirectionDecider.getHorizontalDirection();
                float verticalDirection = mMouseScrollDirectionDecider.getVerticalDirection();
                final float hFactor = scrollFactor * (horizontalDirection != 0 ? horizontalDirection : -1);
                final float vFactor = scrollFactor * (verticalDirection != 0 ? verticalDirection : -1);
                scrollBy((int) (hScroll * hFactor), (int) (vScroll * vFactor));
            }
        }
    }
    return false;
}

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From source file:org.mariotaku.twidere.util.MouseScrollDirectionDecider.java

public boolean guessDirection(MotionEvent event) {
    if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) == 0) {
        return false;
    }//from  w  w w  .j  a va  2  s  . com
    if (event.getAction() != MotionEventCompat.ACTION_SCROLL)
        return false;
    verticalScroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
    horizontalScroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL);
    verticalView.onGenericMotionEvent(event);
    horizontalView.onGenericMotionEvent(event);
    return verticalScroll != 0 || horizontalScroll != 0;
}

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From source file:com.apptentive.android.sdk.view.ApptentiveNestedScrollView.java

public boolean onGenericMotionEvent(MotionEvent event) {
    if ((MotionEventCompat.getSource(event) & InputDeviceCompat.SOURCE_CLASS_POINTER) != 0) {
        switch (event.getAction()) {
        case MotionEventCompat.ACTION_SCROLL: {
            if (!mIsBeingDragged) {
                final float vscroll = MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_VSCROLL);
                if (vscroll != 0) {
                    final int delta = (int) (vscroll * getVerticalScrollFactorCompat());
                    final int range = getScrollRange();
                    int oldScrollY = getScrollY();
                    int newScrollY = oldScrollY - delta;
                    if (newScrollY < 0) {
                        newScrollY = 0;//from   w ww . j  av a  2  s.c  om
                    } else if (newScrollY > range) {
                        newScrollY = range;
                    }
                    if (newScrollY != oldScrollY) {
                        super.scrollTo(getScrollX(), newScrollY);
                        return true;
                    }
                }
            }
        }
        }
    }
    return false;
}

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From source file:com.peerless2012.twowaynestedscrollview.TwoWayNestedScrollView.java

public boolean onGenericMotionEvent(MotionEvent event) {
    if ((MotionEventCompat.getSource(event) & InputDeviceCompat.SOURCE_CLASS_POINTER) != 0) {
        switch (event.getAction()) {
        case MotionEventCompat.ACTION_SCROLL: {
            if (!mIsBeingDragged) {
                final float vscroll = MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_VSCROLL);
                if (vscroll != 0) {
                    final int delta = (int) (vscroll * getVerticalScrollFactorCompat());
                    final int range = getVerticalScrollRange();
                    int oldScrollY = getScrollY();
                    int newScrollY = oldScrollY - delta;
                    if (newScrollY < 0) {
                        newScrollY = 0;//from   ww  w .j a  v  a  2  s .co m
                    } else if (newScrollY > range) {
                        newScrollY = range;
                    }
                    if (newScrollY != oldScrollY) {
                        super.scrollTo(getScrollX(), newScrollY);
                        return true;
                    }
                }
            }
        }
        }
    }
    return false;
}

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From source file:org.nekC.android.support.widget.RecyclerView.java

public boolean onGenericMotionEvent(MotionEvent event) {
    if (mLayout == null) {
        return false;
    }//w w  w  .j  av  a  2 s  . c  om
    if ((MotionEventCompat.getSource(event) & InputDeviceCompat.SOURCE_CLASS_POINTER) != 0) {
        if (event.getAction() == MotionEventCompat.ACTION_SCROLL) {
            final float vScroll, hScroll;
            if (mLayout.canScrollVertically()) {
                vScroll = MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_VSCROLL);
            } else {
                vScroll = 0f;
            }
            if (mLayout.canScrollHorizontally()) {
                hScroll = MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_HSCROLL);
            } else {
                hScroll = 0f;
            }

            if (vScroll != 0 || hScroll != 0) {
                final float scrollFactor = getScrollFactor();
                scrollBy((int) (hScroll * scrollFactor), (int) (vScroll * scrollFactor));
            }
        }
    }
    return false;
}

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From source file:android.support.v71.widget.RecyclerView.java

public boolean onGenericMotionEvent(MotionEvent event) {
    if (mLayout == null) {
        return false;
    }//from  w ww.j  a  v a2s.  c  o m
    if (mLayoutFrozen) {
        return false;
    }
    if ((MotionEventCompat.getSource(event) & InputDeviceCompat.SOURCE_CLASS_POINTER) != 0) {
        if (event.getAction() == MotionEventCompat.ACTION_SCROLL) {
            final float vScroll, hScroll;
            if (mLayout.canScrollVertically()) {
                // Inverse the sign of the vertical scroll to align the scroll orientation
                // with AbsListView.
                vScroll = -MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_VSCROLL);
            } else {
                vScroll = 0f;
            }
            if (mLayout.canScrollHorizontally()) {
                hScroll = MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_HSCROLL);
            } else {
                hScroll = 0f;
            }

            if (vScroll != 0 || hScroll != 0) {
                final float scrollFactor = getScrollFactor();
                scrollByInternal((int) (hScroll * scrollFactor), (int) (vScroll * scrollFactor), event);
            }
        }
    }
    return false;
}

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From source file:cn.ismartv.tvrecyclerview.widget.RecyclerView.java

public boolean onGenericMotionEvent(MotionEvent event) {
    if (mLayout == null) {
        return false;
    }//from   ww w.j  a  v  a2  s . c  om
    if (mLayoutFrozen) {
        return false;
    }
    if ((event.getSource() & InputDeviceCompat.SOURCE_CLASS_POINTER) != 0) {
        if (event.getAction() == MotionEventCompat.ACTION_SCROLL) {
            final float vScroll, hScroll;
            if (mLayout.canScrollVertically()) {
                // Inverse the sign of the vertical scroll to align the scroll orientation
                // with AbsListView.
                vScroll = -MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_VSCROLL);
            } else {
                vScroll = 0f;
            }
            if (mLayout.canScrollHorizontally()) {
                hScroll = MotionEventCompat.getAxisValue(event, MotionEventCompat.AXIS_HSCROLL);
            } else {
                hScroll = 0f;
            }

            if (vScroll != 0 || hScroll != 0) {
                final float scrollFactor = getScrollFactor();
                scrollByInternal((int) (hScroll * scrollFactor), (int) (vScroll * scrollFactor), event);
            }
        }
    }
    return false;
}

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