Examples with Recycler android.support.v7.widget.RecyclerView.Recycler used on opensource projects

Example 76 with Recycler

use of android.support.v7.widget.RecyclerView.Recycler in project vlayout by alibaba.

the class ExposeLinearLayoutManagerEx method layoutChunk.

protected void layoutChunk(RecyclerView.Recycler recycler, RecyclerView.State state, LayoutState layoutState, com.alibaba.android.vlayout.layout.LayoutChunkResult result) {
    View view = layoutState.next(recycler);
    if (view == null) {
        if (DEBUG && layoutState.mScrapList == null) {
            throw new RuntimeException("received null view when unexpected");
        }
        // if we are laying out views in scrap, this may return null which means there is
        // no more items to layout.
        result.mFinished = true;
        return;
    }
    RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) view.getLayoutParams();
    if (layoutState.mScrapList == null) {
        // can not find in scrapList
        if (mShouldReverseLayoutExpose == (layoutState.mLayoutDirection == LayoutState.LAYOUT_START)) {
            addView(view);
        } else {
            addView(view, 0);
        }
    } else {
        if (mShouldReverseLayoutExpose == (layoutState.mLayoutDirection == LayoutState.LAYOUT_START)) {
            addDisappearingView(view);
        } else {
            addDisappearingView(view, 0);
        }
    }
    measureChildWithMargins(view, 0, 0);
    result.mConsumed = mOrientationHelper.getDecoratedMeasurement(view);
    int left, top, right, bottom;
    if (getOrientation() == VERTICAL) {
        if (isLayoutRTL()) {
            right = getWidth() - getPaddingRight();
            left = right - mOrientationHelper.getDecoratedMeasurementInOther(view);
        } else {
            left = getPaddingLeft();
            right = left + mOrientationHelper.getDecoratedMeasurementInOther(view);
        }
        if (layoutState.mLayoutDirection == LayoutState.LAYOUT_START) {
            bottom = layoutState.mOffset;
            top = layoutState.mOffset - result.mConsumed;
        } else {
            top = layoutState.mOffset;
            bottom = layoutState.mOffset + result.mConsumed;
        }
    } else {
        top = getPaddingTop();
        bottom = top + mOrientationHelper.getDecoratedMeasurementInOther(view);
        // whether this layout pass is layout form start to end or in reverse
        if (layoutState.mLayoutDirection == LayoutState.LAYOUT_START) {
            right = layoutState.mOffset;
            left = layoutState.mOffset - result.mConsumed;
        } else {
            left = layoutState.mOffset;
            right = layoutState.mOffset + result.mConsumed;
        }
    }
    // We calculate everything with View's bounding box (which includes decor and margins)
    // To calculate correct layout position, we subtract margins.
    layoutDecorated(view, left + params.leftMargin, top + params.topMargin, right - params.rightMargin, bottom - params.bottomMargin);
    if (DEBUG) {
        Log.d(TAG, "laid out child at position " + getPosition(view) + ", with l:" + (left + params.leftMargin) + ", t:" + (top + params.topMargin) + ", r:" + (right - params.rightMargin) + ", b:" + (bottom - params.bottomMargin));
    }
    // Consume the available space if the view is not removed OR changed
    if (params.isItemRemoved() || params.isItemChanged()) {
        result.mIgnoreConsumed = true;
    }
    result.mFocusable = view.isFocusable();
}

Example 77 with Recycler

use of android.support.v7.widget.RecyclerView.Recycler in project vlayout by alibaba.

the class VirtualLayoutManager method onMeasure.

@Override
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec) {
    if (!mNoScrolling && !mNestedScrolling) {
        super.onMeasure(recycler, state, widthSpec, heightSpec);
        return;
    }
    int initialSize = MAX_NO_SCROLLING_SIZE;
    if (mRecyclerView != null && mNestedScrolling) {
        if (mMaxMeasureSize > 0) {
            initialSize = mMaxMeasureSize;
        } else {
            ViewParent parent = mRecyclerView.getParent();
            if (parent instanceof View) {
                initialSize = ((View) parent).getMeasuredHeight();
            }
        }
    }
    int measuredSize = mSpaceMeasured ? mMeasuredFullSpace : initialSize;
    if (mNoScrolling) {
        mSpaceMeasuring = !mSpaceMeasured;
        if (getChildCount() > 0 || getChildCount() != getItemCount()) {
            View lastChild = getChildAt(getChildCount() - 1);
            int bottom = mMeasuredFullSpace;
            if (lastChild != null) {
                RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) lastChild.getLayoutParams();
                bottom = getDecoratedBottom(lastChild) + params.bottomMargin + computeAlignOffset(lastChild, true, false);
            }
            if (getChildCount() != getItemCount() || (lastChild != null && bottom != mMeasuredFullSpace)) {
                measuredSize = MAX_NO_SCROLLING_SIZE;
                mSpaceMeasured = false;
                mSpaceMeasuring = true;
            }
        } else if (getItemCount() == 0) {
            measuredSize = 0;
            mSpaceMeasured = true;
            mSpaceMeasuring = false;
        }
    }
    if (getOrientation() == VERTICAL) {
        super.onMeasure(recycler, state, widthSpec, View.MeasureSpec.makeMeasureSpec(measuredSize, View.MeasureSpec.AT_MOST));
    } else {
        super.onMeasure(recycler, state, View.MeasureSpec.makeMeasureSpec(measuredSize, View.MeasureSpec.AT_MOST), heightSpec);
    }
}

Example 78 with Recycler

use of android.support.v7.widget.RecyclerView.Recycler in project vlayout by alibaba.

the class VirtualLayoutManager method detachAndScrapViewAt.

@Override
public void detachAndScrapViewAt(int index, RecyclerView.Recycler recycler) {
    View child = getChildAt(index);
    RecyclerView.ViewHolder holder = getChildViewHolder(child);
    if (holder instanceof CacheViewHolder && ((CacheViewHolder) holder).needCached()) {
        // mark not invalid
        ViewHolderWrapper.setFlags(holder, 0, FLAG_INVALID);
    }
    super.detachAndScrapViewAt(index, recycler);
}

Example 79 with Recycler

use of android.support.v7.widget.RecyclerView.Recycler in project vlayout by alibaba.

the class ColumnLayoutHelper method layoutViews.

@Override
public void layoutViews(RecyclerView.Recycler recycler, RecyclerView.State state, VirtualLayoutManager.LayoutStateWrapper layoutState, LayoutChunkResult result, LayoutManagerHelper helper) {
    // reach the end of this layout
    if (isOutOfRange(layoutState.getCurrentPosition())) {
        return;
    }
    final boolean layoutInVertical = helper.getOrientation() == VERTICAL;
    final OrientationHelper orientationHelper = helper.getMainOrientationHelper();
    final int itemCount = getItemCount();
    if (mViews == null || mViews.length != itemCount) {
        mViews = new View[itemCount];
    }
    if (mEqViews == null || mEqViews.length != itemCount) {
        mEqViews = new View[itemCount];
    } else {
        Arrays.fill(mEqViews, null);
    }
    final int count = getAllChildren(mViews, recycler, layoutState, result, helper);
    if (layoutInVertical) {
        // TODO: only handle vertical layout now
        int maxVMargin = 0;
        int lastHMargin = 0;
        int totalMargin = 0;
        for (int i = 0; i < count; i++) {
            View view = mViews[i];
            ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
            if (layoutParams instanceof RecyclerView.LayoutParams) {
                RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) layoutParams;
                params.leftMargin = Math.max(lastHMargin, params.leftMargin);
                totalMargin += params.leftMargin;
                if (i != count - 1) {
                    // not last item
                    lastHMargin = params.rightMargin;
                    params.rightMargin = 0;
                } else {
                    totalMargin += params.rightMargin;
                }
                maxVMargin = Math.max(maxVMargin, params.topMargin + params.bottomMargin);
            }
        }
        final int totalWidth = helper.getContentWidth() - helper.getPaddingLeft() - helper.getPaddingRight() - getHorizontalMargin() - getHorizontalPadding();
        final int availableWidth = totalWidth - totalMargin;
        int usedWidth = 0;
        int minHeight = Integer.MAX_VALUE;
        int uniformHeight = -1;
        if (!Float.isNaN(mAspectRatio)) {
            uniformHeight = (int) (totalWidth / mAspectRatio + 0.5f);
        }
        int eqSize = 0;
        for (int i = 0; i < count; i++) {
            View view = mViews[i];
            VirtualLayoutManager.LayoutParams params = (VirtualLayoutManager.LayoutParams) view.getLayoutParams();
            int heightSpec = helper.getChildMeasureSpec(helper.getContentHeight() - helper.getPaddingTop() - helper.getPaddingBottom(), uniformHeight > 0 ? uniformHeight : params.height, true);
            if (mWeights != null && i < mWeights.length && !Float.isNaN(mWeights[i]) && mWeights[i] >= 0) {
                // calculate width with weight in percentage
                int resizeWidth = (int) (mWeights[i] * 1.0f / 100 * availableWidth + 0.5f);
                if (!Float.isNaN(params.mAspectRatio)) {
                    int specialHeight = (int) (resizeWidth / params.mAspectRatio + 0.5f);
                    heightSpec = View.MeasureSpec.makeMeasureSpec(specialHeight, View.MeasureSpec.EXACTLY);
                }
                helper.measureChild(view, View.MeasureSpec.makeMeasureSpec(resizeWidth, View.MeasureSpec.EXACTLY), heightSpec);
                // add width into usedWidth
                usedWidth += resizeWidth;
                // find minHeight
                minHeight = Math.min(minHeight, view.getMeasuredHeight());
            } else {
                mEqViews[eqSize++] = view;
            }
        }
        for (int i = 0; i < eqSize; i++) {
            View view = mEqViews[i];
            VirtualLayoutManager.LayoutParams params = (VirtualLayoutManager.LayoutParams) view.getLayoutParams();
            int heightSpec;
            int resizeWidth = (int) ((availableWidth - usedWidth) * 1.0f / eqSize + 0.5f);
            if (!Float.isNaN(params.mAspectRatio)) {
                int specialHeight = (int) (resizeWidth / params.mAspectRatio + 0.5f);
                heightSpec = View.MeasureSpec.makeMeasureSpec(specialHeight, View.MeasureSpec.EXACTLY);
            } else {
                heightSpec = helper.getChildMeasureSpec(helper.getContentHeight() - helper.getPaddingTop() - helper.getPaddingBottom(), uniformHeight > 0 ? uniformHeight : params.height, true);
            }
            //if cols' length is less than view's count, then remainder views share the rest space
            helper.measureChild(view, View.MeasureSpec.makeMeasureSpec(resizeWidth, View.MeasureSpec.EXACTLY), heightSpec);
            // find minHeight
            minHeight = Math.min(minHeight, view.getMeasuredHeight());
        }
        // uniform all views into min height
        for (int i = 0; i < count; i++) {
            View view = mViews[i];
            if (view.getMeasuredHeight() != minHeight) {
                //noinspection ResourceType
                helper.measureChild(view, View.MeasureSpec.makeMeasureSpec(view.getMeasuredWidth(), View.MeasureSpec.EXACTLY), View.MeasureSpec.makeMeasureSpec(minHeight, View.MeasureSpec.EXACTLY));
            }
        }
        result.mConsumed = minHeight + maxVMargin + getVerticalMargin() + getVerticalPadding();
        calculateRect(minHeight + maxVMargin, mTempArea, layoutState, helper);
        // do layout
        int left = mTempArea.left;
        for (int i = 0; i < count; i++) {
            View view = mViews[i];
            int top = mTempArea.top, bottom = mTempArea.bottom;
            int right = left + orientationHelper.getDecoratedMeasurementInOther(view);
            layoutChild(view, left, top, right, bottom, helper);
            left = right;
        }
    }
    Arrays.fill(mViews, null);
    Arrays.fill(mEqViews, null);
}

Example 80 with Recycler

use of android.support.v7.widget.RecyclerView.Recycler in project vlayout by alibaba.

the class FloatLayoutHelper method layoutViews.

@Override
public void layoutViews(RecyclerView.Recycler recycler, RecyclerView.State state, VirtualLayoutManager.LayoutStateWrapper layoutState, LayoutChunkResult result, final LayoutManagerHelper helper) {
    // reach the end of this layout
    if (isOutOfRange(layoutState.getCurrentPosition())) {
        return;
    }
    // find view in currentPosition
    View view = mFixView;
    if (view == null)
        view = layoutState.next(recycler);
    else {
        layoutState.skipCurrentPosition();
    }
    if (view == null) {
        result.mFinished = true;
        return;
    }
    helper.getChildViewHolder(view).setIsRecyclable(false);
    mDoNormalHandle = state.isPreLayout();
    if (mDoNormalHandle) {
        // in PreLayout do normal layout
        helper.addChildView(layoutState, view);
    }
    mFixView = view;
    mFixView.setClickable(true);
    doMeasureAndLayout(view, helper);
    result.mConsumed = 0;
    result.mIgnoreConsumed = true;
    handleStateOnResult(result, view);
}