Example usage for android.view View getLeft

List of usage examples for android.view View getLeft

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Introduction

In this page you can find the example usage for android.view View getLeft.

Prototype

@ViewDebug.CapturedViewProperty
public final int getLeft()

Source Link

Document

Left position of this view relative to its parent.

Usage

From source file:android.support.design.widget.TabLayout.java

private int calculateScrollXForTab(int position, float positionOffset) {
    if (mMode == MODE_SCROLLABLE) {
        final View selectedChild = mTabStrip.getChildAt(position);
        final View nextChild = position + 1 < mTabStrip.getChildCount() ? mTabStrip.getChildAt(position + 1)
                : null;//from w w  w.  j  av  a 2 s. c o m
        final int selectedWidth = selectedChild != null ? selectedChild.getWidth() : 0;
        final int nextWidth = nextChild != null ? nextChild.getWidth() : 0;

        // base scroll amount: places center of tab in center of parent
        int scrollBase = selectedChild.getLeft() + (selectedWidth / 2) - (getWidth() / 2);
        // offset amount: fraction of the distance between centers of tabs
        int scrollOffset = (int) ((selectedWidth + nextWidth) * 0.5f * positionOffset);

        return (ViewCompat.getLayoutDirection(this) == ViewCompat.LAYOUT_DIRECTION_LTR)
                ? scrollBase + scrollOffset
                : scrollBase - scrollOffset;
    }
    return 0;
}

From source file:cn.iterlog.myapplication.widget.overscroll.StaggeredGridView.java

@Override
public Parcelable onSaveInstanceState() {
    final Parcelable superState = super.onSaveInstanceState();
    final SavedState ss = new SavedState(superState);
    final int position = mFirstPosition;
    ss.position = mFirstPosition;/*from   www .j  a v a  2 s.  c  o m*/

    if (position >= 0 && mAdapter != null && position < mAdapter.getCount()) {
        ss.firstId = mAdapter.getItemId(position);
    }

    if (getChildCount() > 0) {

        int topOffsets[] = new int[this.mColCount];

        if (this.mColWidth > 0)
            for (int i = 0; i < mColCount; i++) {
                if (getChildAt(i) != null) {
                    final View child = getChildAt(i);
                    final int left = child.getLeft();
                    int col = 0;
                    Log.w("mColWidth", mColWidth + " " + left);

                    // determine the column by cycling widths
                    while (left > col * (this.mColWidth + mItemMargin * 2) + getPaddingLeft()) {
                        col++;
                    }

                    topOffsets[col] = getChildAt(i).getTop() - mItemMargin - getPaddingTop();
                }

            }

        ss.topOffsets = topOffsets;

        // convert nested arraylist so it can be parcelable
        ArrayList<ColMap> convert = new ArrayList<ColMap>();
        for (HashSet<Integer> cols : mColMappings) {
            convert.add(new ColMap(new ArrayList<Integer>(cols)));
        }

        ss.mapping = convert;
    }
    return ss;
}

From source file:cn.iterlog.myapplication.widget.overscroll.StaggeredGridView.java

private View getFirstChildAtColumn(int column) {

    if (this.getChildCount() > column) {
        for (int i = 0; i < this.mColCount; i++) {
            final View child = getChildAt(i);

            if (child != null) {
                final int left = child.getLeft();
                int col = 0;

                // determine the column by cycling widths
                while (left > col * (this.mColWidth + mItemMargin * 2) + getPaddingLeft()) {
                    col++;/*w ww . j av  a 2s .co  m*/
                }

                if (col == column) {
                    return child;
                }

            }
        }
    }

    return null;
}

From source file:com.android.slidingmenu.HorizontalListView.java

private void removeNonVisibleChildren(final int dx) {
    View child = getLeftmostChild();

    // Loop removing the leftmost child, until that child is on the screen
    while (child != null && child.getRight() + dx <= 0) {
        // The child is being completely removed so remove its width from
        // the display offset and its divider if it has one.
        // To remove add the size of the child and its divider (if it has
        // one) to the offset.
        // You need to add since its being removed from the left side, i.e.
        // shifting the offset to the right.
        mDisplayOffset += isLastItemInAdapter(mLeftViewAdapterIndex) ? child.getMeasuredWidth()
                : mDividerWidth + child.getMeasuredWidth();

        // Add the removed view to the cache
        recycleView(mLeftViewAdapterIndex, child);

        // Actually remove the view
        removeViewInLayout(child);//  w  w  w  . j a  v a2 s .com

        // Keep track of the adapter index of the left most child
        mLeftViewAdapterIndex++;

        // Get the new leftmost child
        child = getLeftmostChild();
    }

    child = getRightmostChild();

    // Loop removing the rightmost child, until that child is on the screen
    while (child != null && child.getLeft() + dx >= getWidth()) {
        recycleView(mRightViewAdapterIndex, child);
        removeViewInLayout(child);
        mRightViewAdapterIndex--;
        child = getRightmostChild();
    }
}

From source file:com.brantapps.viewpagerindicator.vertical.VerticalViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dy.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dy Delta scrolled in pixels/*from   w w w  .j  a  va 2s .c om*/
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dy.
 */
// BrantApps Change: Renamed dx to dy
protected boolean canScroll(View v, boolean checkV, int dy, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dy, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    // BrantApps Change: Replaced canScrollHorizontally with canScrollVertically
    return checkV && ViewCompat.canScrollVertically(v, -dy);
}

From source file:chan.android.app.bitwise.util.StaggeredGridView.java

final void offsetChildren(int offset) {
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);
        child.layout(child.getLeft(), child.getTop() + offset, child.getRight(), child.getBottom() + offset);
    }//  w  w  w.jav a 2s.co  m

    final int colCount = mColCount;
    for (int i = 0; i < colCount; i++) {
        mItemTops[i] += offset;
        mItemBottoms[i] += offset;
    }
}

From source file:chan.android.app.bitwise.util.StaggeredGridView.java

private View getFirstChildAtColumn(int column) {

    if (this.getChildCount() > column) {
        for (int i = 0; i < this.mColCount; i++) {
            final View child = getChildAt(i);
            final int left = child.getLeft();

            if (child != null) {
                int col = 0;

                // determine the column by cycling widths
                while (left > col * (this.mColWidth + mItemMargin * 2) + getPaddingLeft()) {
                    col++;//from  ww  w .j a v a2  s .c  om
                }

                if (col == column) {
                    return child;
                }
            }
        }
    }
    return null;
}

From source file:com.app.afteryou.ui.staggered.StaggeredGridView.java

@Override
public Parcelable onSaveInstanceState() {
    final Parcelable superState = super.onSaveInstanceState();
    final SavedState ss = new SavedState(superState);
    final int position = mFirstPosition;
    ss.position = position;// w  w w .ja v  a 2  s.com
    if (position >= 0 && mAdapter != null && position < mAdapter.getCount()) {
        ss.firstId = mAdapter.getItemId(position);
    }
    if (getChildCount() > 0) {
        int topOffsets[] = new int[this.mColCount];

        if (this.mColWidth > 0)
            for (int i = 0; i < mColCount; i++) {
                if (getChildAt(i) != null) {
                    final View child = getChildAt(i);
                    final int left = child.getLeft();
                    int col = 0;
                    // determine the column by cycling widths
                    while (left > col * (this.mColWidth + mItemMargin * 2) + getPaddingLeft()) {
                        col++;
                    }
                    topOffsets[col] = getChildAt(i).getTop() - mItemMargin - getPaddingTop();
                }
            }

        ss.topOffsets = topOffsets;

        // convert nested arraylist so it can be parcelable
        ArrayList<ColMap> convert = new ArrayList<ColMap>();
        for (ArrayList<Integer> cols : mColMappings) {
            convert.add(new ColMap(cols));
        }

        ss.mapping = convert;

    }
    return ss;
}

From source file:chan.android.app.bitwise.util.StaggeredGridView.java

@Override
public Parcelable onSaveInstanceState() {
    final Parcelable superState = super.onSaveInstanceState();
    final SavedState ss = new SavedState(superState);
    final int position = mFirstPosition;
    ss.position = mFirstPosition;/*from   w  ww  .  j a va2s.c o m*/

    if (position >= 0 && mAdapter != null && position < mAdapter.getCount()) {
        ss.firstId = mAdapter.getItemId(position);
    }

    if (getChildCount() > 0) {

        int topOffsets[] = new int[this.mColCount];

        if (this.mColWidth > 0)
            for (int i = 0; i < mColCount; i++) {
                if (getChildAt(i) != null) {
                    final View child = getChildAt(i);
                    final int left = child.getLeft();
                    int col = 0;
                    Log.w("mColWidth", mColWidth + " " + left);

                    // determine the column by cycling widths
                    while (left > col * (this.mColWidth + mItemMargin * 2) + getPaddingLeft()) {
                        col++;
                    }

                    topOffsets[col] = getChildAt(i).getTop() - mItemMargin - getPaddingTop();
                }

            }

        ss.topOffsets = topOffsets;

        // convert nested arraylist so it can be parcelable
        ArrayList<ColMap> convert = new ArrayList<ColMap>();
        for (ArrayList<Integer> cols : mColMappings) {
            convert.add(new ColMap(cols));
        }

        ss.mapping = convert;
    }
    return ss;
}

From source file:com.app.afteryou.ui.staggered.StaggeredGridView.java

private View getFirstChildAtColumn(int column) {
    if (this.getChildCount() > column) {
        for (int i = 0; i < this.mColCount; i++) {
            final View child = getChildAt(i);
            if (child != null) {
                final int left = child.getLeft();
                int col = 0;
                // determine the column by cycling widths
                while (left > col * (this.mColWidth + mItemMargin * 2) + getPaddingLeft()) {
                    col++;//from www. j  av  a 2s.  c om
                }
                if (col == column) {
                    return child;
                }
            }
        }
    }
    return null;
}