Examples with LEFT android.support.v7.widget.helper.ItemTouchHelper.LEFT used on opensource projects

Example 16 with LEFT

use of android.support.v7.widget.helper.ItemTouchHelper.LEFT in project EasyRecyclerView by Jude95.

the class DividerDecoration method onDrawOver.

public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    if (parent.getAdapter() == null) {
        return;
    }
    int orientation = 0;
    int headerCount = 0, footerCount = 0, dataCount;
    if (parent.getAdapter() instanceof RecyclerArrayAdapter) {
        headerCount = ((RecyclerArrayAdapter) parent.getAdapter()).getHeaderCount();
        footerCount = ((RecyclerArrayAdapter) parent.getAdapter()).getFooterCount();
        dataCount = ((RecyclerArrayAdapter) parent.getAdapter()).getCount();
    } else {
        dataCount = parent.getAdapter().getItemCount();
    }
    int dataStartPosition = headerCount;
    int dataEndPosition = headerCount + dataCount;
    RecyclerView.LayoutManager layoutManager = parent.getLayoutManager();
    if (layoutManager instanceof StaggeredGridLayoutManager) {
        orientation = ((StaggeredGridLayoutManager) layoutManager).getOrientation();
    } else if (layoutManager instanceof GridLayoutManager) {
        orientation = ((GridLayoutManager) layoutManager).getOrientation();
    } else if (layoutManager instanceof LinearLayoutManager) {
        orientation = ((LinearLayoutManager) layoutManager).getOrientation();
    }
    int start, end;
    if (orientation == OrientationHelper.VERTICAL) {
        start = parent.getPaddingLeft() + mPaddingLeft;
        end = parent.getWidth() - parent.getPaddingRight() - mPaddingRight;
    } else {
        start = parent.getPaddingTop() + mPaddingLeft;
        end = parent.getHeight() - parent.getPaddingBottom() - mPaddingRight;
    }
    int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        View child = parent.getChildAt(i);
        int position = parent.getChildAdapterPosition(child);
        if (//数据项除了最后一项
        position >= dataStartPosition && position < dataEndPosition - 1 || //数据项最后一项
        (position == dataEndPosition - 1 && mDrawLastItem) || //header&footer且可绘制
        (!(position >= dataStartPosition && position < dataEndPosition) && mDrawHeaderFooter)) {
            if (orientation == OrientationHelper.VERTICAL) {
                RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
                int top = child.getBottom() + params.bottomMargin;
                int bottom = top + mHeight;
                mColorDrawable.setBounds(start, top, end, bottom);
                mColorDrawable.draw(c);
            } else {
                RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
                int left = child.getRight() + params.rightMargin;
                int right = left + mHeight;
                mColorDrawable.setBounds(left, start, right, end);
                mColorDrawable.draw(c);
            }
        }
    }
}

Example 17 with LEFT

use of android.support.v7.widget.helper.ItemTouchHelper.LEFT in project UltimateAndroid by cymcsg.

the class DividerItemDecoration method drawHorizontal.

public void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();
    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int left = child.getRight() + params.rightMargin;
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 18 with LEFT

use of android.support.v7.widget.helper.ItemTouchHelper.LEFT in project UltimateAndroid by cymcsg.

the class GridDividerDecoration method drawHorizontal.

/** Draw dividers to the right of each child view */
public void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();
    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int left = child.getRight() + params.rightMargin + mInsets;
        final int right = left + mDivider.getIntrinsicWidth();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 19 with LEFT

use of android.support.v7.widget.helper.ItemTouchHelper.LEFT in project UltimateAndroid by cymcsg.

the class GridDividerDecoration method drawVertical.

/** Draw dividers at each expected grid interval */
public void drawVertical(Canvas c, RecyclerView parent) {
    if (parent.getChildCount() == 0)
        return;
    final int left = parent.getPaddingLeft();
    final int right = parent.getWidth() - parent.getPaddingRight();
    final View child = parent.getChildAt(0);
    if (child.getHeight() == 0)
        return;
    final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
    int top = child.getBottom() + params.bottomMargin + mInsets;
    int bottom = top + mDivider.getIntrinsicHeight();
    final int parentBottom = parent.getHeight() - parent.getPaddingBottom();
    while (bottom < parentBottom) {
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
        top += mInsets + params.topMargin + child.getHeight() + params.bottomMargin + mInsets;
        bottom = top + mDivider.getIntrinsicHeight();
    }
}

Example 20 with LEFT

use of android.support.v7.widget.helper.ItemTouchHelper.LEFT in project UltimateAndroid by cymcsg.

the class StaticGridLayoutManager method scrollHorizontallyBy.

/*
     * This method describes how far RecyclerView thinks the contents should scroll horizontally.
     * You are responsible for verifying edge boundaries, and determining if this scroll
     * event somehow requires that new views be added or old views get recycled.
     */
@Override
public int scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, RecyclerView.State state) {
    if (getChildCount() == 0) {
        return 0;
    }
    //Take leftmost measurements from the top-left child
    final View topView = getChildAt(0);
    //Take rightmost measurements from the top-right child
    final View bottomView = getChildAt(mVisibleColumnCount - 1);
    //Optimize the case where the entire data set is too small to scroll
    int viewSpan = getDecoratedRight(bottomView) - getDecoratedLeft(topView);
    if (viewSpan <= getHorizontalSpace()) {
        //We cannot scroll in either direction
        return 0;
    }
    int delta;
    boolean leftBoundReached = getFirstVisibleColumn() == 0;
    boolean rightBoundReached = getLastVisibleColumn() >= getTotalColumnCount();
    if (dx > 0) {
        //Check right bound
        if (rightBoundReached) {
            //If we've reached the last column, enforce limits
            int rightOffset = getHorizontalSpace() - getDecoratedRight(bottomView) + getPaddingRight();
            delta = Math.max(-dx, rightOffset);
        } else {
            //No limits while the last column isn't visible
            delta = -dx;
        }
    } else {
        //Check left bound
        if (leftBoundReached) {
            int leftOffset = -getDecoratedLeft(topView) + getPaddingLeft();
            delta = Math.min(-dx, leftOffset);
        } else {
            delta = -dx;
        }
    }
    offsetChildrenHorizontal(delta);
    if (dx > 0) {
        if (getDecoratedRight(topView) < 0 && !rightBoundReached) {
            fillGrid(DIRECTION_END, recycler);
        } else if (!rightBoundReached) {
            fillGrid(DIRECTION_NONE, recycler);
        }
    } else {
        if (getDecoratedLeft(topView) > 0 && !leftBoundReached) {
            fillGrid(DIRECTION_START, recycler);
        } else if (!leftBoundReached) {
            fillGrid(DIRECTION_NONE, recycler);
        }
    }
    /*
         * Return value determines if a boundary has been reached
         * (for edge effects and flings). If returned value does not
         * match original delta (passed in), RecyclerView will draw
         * an edge effect.
         */
    return -delta;
}