@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
boolean needsInvalidate = false;
if (mTopGlow != null && !mTopGlow.isFinished()) {
final int restore = c.save();
if (getClipToPadding(parent)) {
c.translate(parent.getPaddingLeft(), parent.getPaddingTop());
}
//noinspection ConstantConditions
needsInvalidate |= mTopGlow.draw(c);
c.restoreToCount(restore);
}
if (mBottomGlow != null && !mBottomGlow.isFinished()) {
final int restore = c.save();
c.rotate(180);
if (getClipToPadding(parent)) {
c.translate(
-parent.getWidth() + parent.getPaddingRight(),
-parent.getHeight() + parent.getPaddingBottom());
} else {
c.translate(-parent.getWidth(), -parent.getHeight());
}
needsInvalidate |= mBottomGlow.draw(c);
c.restoreToCount(restore);
}
if (needsInvalidate) {
ViewCompat.postInvalidateOnAnimation(parent);
}
}
@Override
protected Rect getDividerBound(int position, RecyclerView parent, View child) {
Rect bounds = new Rect(0, 0, 0, 0);
int transitionX = (int) ViewCompat.getTranslationX(child);
int transitionY = (int) ViewCompat.getTranslationY(child);
RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
bounds.top =
parent.getPaddingTop() + mMarginProvider.dividerTopMargin(position, parent) + transitionY;
bounds.bottom =
parent.getHeight()
- parent.getPaddingBottom()
- mMarginProvider.dividerBottomMargin(position, parent)
+ transitionY;
int dividerSize = getDividerSize(position, parent);
if (mDividerType == DividerType.DRAWABLE) {
bounds.left = child.getRight() + params.leftMargin + transitionX;
bounds.right = bounds.left + dividerSize;
} else {
bounds.left = child.getRight() + params.leftMargin + dividerSize / 2 + transitionX;
bounds.right = bounds.left;
}
return bounds;
}
/**
* build the MiniDrawer
*
* @param ctx
* @return
*/
public View build(Context ctx) {
mContainer = new LinearLayout(ctx);
if (mInnerShadow) {
if (!mInRTL) {
mContainer.setBackgroundResource(R.drawable.material_drawer_shadow_left);
} else {
mContainer.setBackgroundResource(R.drawable.material_drawer_shadow_right);
}
}
// create and append recyclerView
mRecyclerView = new RecyclerView(ctx);
mContainer.addView(
mRecyclerView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
// set the itemAnimator
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
// some style improvements on older devices
mRecyclerView.setFadingEdgeLength(0);
// set the drawing cache background to the same color as the slider to improve performance
// mRecyclerView.setDrawingCacheBackgroundColor(UIUtils.getThemeColorFromAttrOrRes(mActivity,
// R.attr.material_drawer_background, R.color.material_drawer_background));
mRecyclerView.setClipToPadding(false);
// additional stuff
mRecyclerView.setLayoutManager(new LinearLayoutManager(ctx));
// adapter
mDrawerAdapter = new DrawerAdapter();
mRecyclerView.setAdapter(mDrawerAdapter);
// if the activity with the drawer should be fullscreen add the padding for the statusbar
if (mDrawer != null
&& mDrawer.mDrawerBuilder != null
&& (mDrawer.mDrawerBuilder.mFullscreen || mDrawer.mDrawerBuilder.mTranslucentStatusBar)) {
mRecyclerView.setPadding(
mRecyclerView.getPaddingLeft(),
UIUtils.getStatusBarHeight(ctx),
mRecyclerView.getPaddingRight(),
mRecyclerView.getPaddingBottom());
}
// if the activity with the drawer should be fullscreen add the padding for the navigationBar
if (mDrawer != null
&& mDrawer.mDrawerBuilder != null
&& (mDrawer.mDrawerBuilder.mFullscreen
|| mDrawer.mDrawerBuilder.mTranslucentNavigationBar)) {
mRecyclerView.setPadding(
mRecyclerView.getPaddingLeft(),
mRecyclerView.getPaddingTop(),
mRecyclerView.getPaddingRight(),
UIUtils.getNavigationBarHeight(ctx));
}
// set the adapter with the items
createItems();
return mContainer;
}
@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
if (mDivider == null) {
super.onDrawOver(c, parent, state);
return;
}
// Initialization needed to avoid compiler warning
int left = 0, right = 0, top = 0, bottom = 0, size;
int orientation = mOrientation != -1 ? mOrientation : getOrientation(parent);
int childCount = parent.getChildCount();
if (orientation == LinearLayoutManager.VERTICAL) {
size = mDivider.getIntrinsicHeight();
left = parent.getPaddingLeft();
right = parent.getWidth() - parent.getPaddingRight();
} else { // horizontal
size = mDivider.getIntrinsicWidth();
top = parent.getPaddingTop();
bottom = parent.getHeight() - parent.getPaddingBottom();
}
for (int i = mShowFirstDivider ? 0 : 1; i < childCount; i++) {
View child = parent.getChildAt(i);
RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
if (orientation == LinearLayoutManager.VERTICAL) {
top = child.getTop() - params.topMargin - size;
bottom = top + size;
} else { // horizontal
left = child.getLeft() - params.leftMargin;
right = left + size;
}
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
// show last divider
if (mShowLastDivider && childCount > 0) {
View child = parent.getChildAt(childCount - 1);
if (parent.getChildAdapterPosition(child) == (state.getItemCount() - 1)) {
RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
if (orientation == LinearLayoutManager.VERTICAL) {
top = child.getBottom() + params.bottomMargin;
bottom = top + size;
} else { // horizontal
left = child.getRight() + params.rightMargin;
right = left + size;
}
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
}
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);
}
}
/**
* 绘制垂直方向的分割线
*
* @param c
* @param parent
*/
private void drawVDeraction(Canvas c, RecyclerView parent) {
int top = parent.getPaddingTop();
int bottom = parent.getHeight() - parent.getPaddingBottom();
int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
View child = parent.getChildAt(i);
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams();
int left = child.getRight() + layoutParams.rightMargin;
int right = left + mDivider.getIntrinsicWidth();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
/**
* 绘制横向 item 分割线
*
* @param canvas
* @param parent
*/
private void drawHorizontal(Canvas canvas, RecyclerView parent) {
final int top = parent.getPaddingTop();
final int bottom = parent.getMeasuredHeight() - parent.getPaddingBottom();
final int childSize = parent.getChildCount();
for (int i = 0; i < childSize; i++) {
final View child = parent.getChildAt(i);
RecyclerView.LayoutParams layoutParams =
(RecyclerView.LayoutParams) child.getLayoutParams();
final int left = child.getRight() + layoutParams.rightMargin;
final int right = left + mItemSize;
canvas.drawRect(left, top, right, bottom, mPaint);
}
}
private static void updateGlowSize(RecyclerView rv, EdgeEffectCompat topGlow) {
int width = rv.getMeasuredWidth();
int height = rv.getMeasuredHeight();
if (getClipToPadding(rv)) {
width -= rv.getPaddingLeft() - rv.getPaddingRight();
height -= rv.getPaddingTop() - rv.getPaddingBottom();
}
width = Math.max(0, width);
height = Math.max(0, height);
topGlow.setSize(width, height);
}
@Override
public void attach(RecyclerView.OnScrollListener scrollListener, RecyclerView recyclerView) {
if (scrollListener != null) {
recyclerView.setOnScrollListener(
new GroupOnScrollListener(scrollListener, mFloatHeaderScrollListener));
} else {
recyclerView.setOnScrollListener(mFloatHeaderScrollListener);
}
recyclerView.setPadding(
recyclerView.getPaddingTop(),
mAdditionalAdapterHeight,
recyclerView.getPaddingRight(),
recyclerView.getPaddingBottom());
mRecyclerViews.add(recyclerView);
}
private void drawHorizontal(Canvas canvas, RecyclerView parent) {
final int top = parent.getPaddingTop();
final int bottom = parent.getHeight() - parent.getPaddingBottom();
final int childCount = parent.getChildCount();
for (int i = 1; i < childCount; i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
final int size = mDivider.getIntrinsicWidth();
final int left = child.getLeft() - params.leftMargin;
final int right = left + size;
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(canvas);
}
}
public void drawHorizontal(@NonNull Canvas c, @NonNull RecyclerView parent) {
final int top = parent.getPaddingTop();
final int bottom = parent.getHeight() - parent.getPaddingBottom();
final int childCount = parent.getChildCount();
IntStream.range(0, childCount)
.forEach(
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);
});
}
@Override
public View getHeader(RecyclerView parent, int position) {
long headerId = mAdapter.getHeaderId(position);
View header = mHeaderViews.get(headerId);
if (header == null) {
// TODO - recycle views
RecyclerView.ViewHolder viewHolder = mAdapter.onCreateHeaderViewHolder(parent);
mAdapter.onBindHeaderViewHolder(viewHolder, position);
header = viewHolder.itemView;
if (header.getLayoutParams() == null) {
header.setLayoutParams(
new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
}
int widthSpec;
int heightSpec;
if (mOrientationProvider.getOrientation(parent) == LinearLayoutManager.VERTICAL) {
widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.EXACTLY);
heightSpec =
View.MeasureSpec.makeMeasureSpec(parent.getHeight(), View.MeasureSpec.UNSPECIFIED);
} else {
widthSpec =
View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.UNSPECIFIED);
heightSpec = View.MeasureSpec.makeMeasureSpec(parent.getHeight(), View.MeasureSpec.EXACTLY);
}
int childWidth =
ViewGroup.getChildMeasureSpec(
widthSpec,
parent.getPaddingLeft() + parent.getPaddingRight(),
header.getLayoutParams().width);
int childHeight =
ViewGroup.getChildMeasureSpec(
heightSpec,
parent.getPaddingTop() + parent.getPaddingBottom(),
header.getLayoutParams().height);
header.measure(childWidth, childHeight);
header.layout(0, 0, header.getMeasuredWidth(), header.getMeasuredHeight());
mHeaderViews.put(headerId, header);
}
return header;
}
@Override
public void onDrawOver(Canvas canvas, RecyclerView parent, RecyclerView.State state) {
int left = parent.getPaddingLeft();
int right = parent.getWidth() - parent.getPaddingRight();
int top = parent.getPaddingTop();
int bottom = parent.getHeight() - parent.getPaddingBottom();
int orientation = getOrientation(parent);
int childCount = parent.getChildCount();
for (int i = showFirstDivider ? 0 : 1; i < childCount; i++) {
View child = parent.getChildAt(i);
RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
if (orientation == LinearLayoutManager.VERTICAL) {
top = child.getTop() - params.topMargin;
bottom = top - (size / 2);
canvas.drawLine(left, bottom, right, bottom, paint);
} else {
left = child.getLeft() - params.leftMargin;
right = left - (size / 2);
canvas.drawLine(right, top, right, bottom, paint);
}
}
if (showLastDivider && childCount > 0) {
View child = parent.getChildAt(childCount - 1);
RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
if (orientation == LinearLayoutManager.VERTICAL) {
top = child.getBottom() + params.bottomMargin;
bottom = top + size;
canvas.drawLine(left, bottom, right, bottom, paint);
} else {
left = child.getRight() + params.rightMargin;
right = left + (size / 2);
canvas.drawLine(right, top, right, bottom, paint);
}
}
}
public static boolean canRecyclerViewScroll(RecyclerView view) {
if (view == null || view.getAdapter() == null || view.getLayoutManager() == null) return false;
final RecyclerView.LayoutManager lm = view.getLayoutManager();
final int count = view.getAdapter().getItemCount();
int lastVisible;
if (lm instanceof LinearLayoutManager) {
LinearLayoutManager llm = (LinearLayoutManager) lm;
lastVisible = llm.findLastVisibleItemPosition();
} else {
throw new MaterialDialog.NotImplementedException(
"Material Dialogs currently only supports LinearLayoutManager. Please report any new layout managers.");
}
if (lastVisible == -1) return false;
/* We scroll if the last item is not visible */
final boolean lastItemVisible = lastVisible == count - 1;
return !lastItemVisible
|| (view.getChildCount() > 0
&& view.getChildAt(view.getChildCount() - 1).getBottom()
> view.getHeight() - view.getPaddingBottom());
}
private void updateTranslationOffset() {
final RecyclerView rv = mRecyclerView;
final int childCount = rv.getChildCount();
if (childCount > 0) {
mTranslationLeftLimit = 0;
mTranslationRightLimit = rv.getWidth() - mDraggingItemInfo.width;
mTranslationTopLimit = 0;
mTranslationBottomLimit = rv.getHeight() - mDraggingItemInfo.height;
switch (mLayoutOrientation) {
case CustomRecyclerViewUtils.ORIENTATION_VERTICAL:
{
mTranslationLeftLimit += rv.getPaddingLeft();
mTranslationRightLimit -= rv.getPaddingRight();
break;
}
case CustomRecyclerViewUtils.ORIENTATION_HORIZONTAL:
{
mTranslationTopLimit += rv.getPaddingTop();
mTranslationBottomLimit -= rv.getPaddingBottom();
break;
}
}
mTranslationRightLimit = Math.max(mTranslationLeftLimit, mTranslationRightLimit);
mTranslationBottomLimit = Math.max(mTranslationTopLimit, mTranslationBottomLimit);
if (!mIsScrolling) {
final int firstVisiblePosition =
CustomRecyclerViewUtils.findFirstVisibleItemPosition(rv, true);
final int lastVisiblePosition =
CustomRecyclerViewUtils.findLastVisibleItemPosition(rv, true);
final View firstChild =
findRangeFirstItem(rv, mRange, firstVisiblePosition, lastVisiblePosition);
final View lastChild =
findRangeLastItem(rv, mRange, firstVisiblePosition, lastVisiblePosition);
switch (mLayoutOrientation) {
case CustomRecyclerViewUtils.ORIENTATION_VERTICAL:
{
if (firstChild != null) {
mTranslationTopLimit = Math.min(mTranslationBottomLimit, firstChild.getTop());
}
if (lastChild != null) {
mTranslationBottomLimit = Math.min(mTranslationBottomLimit, lastChild.getTop());
}
break;
}
case CustomRecyclerViewUtils.ORIENTATION_HORIZONTAL:
{
if (firstChild != null) {
mTranslationLeftLimit = Math.min(mTranslationLeftLimit, firstChild.getLeft());
}
if (lastChild != null) {
mTranslationRightLimit = Math.min(mTranslationRightLimit, lastChild.getLeft());
}
break;
}
}
}
} else {
mTranslationRightLimit = mTranslationLeftLimit = rv.getPaddingLeft();
mTranslationBottomLimit = mTranslationTopLimit = rv.getPaddingTop();
}
mTranslationX = mTouchPositionX - mDraggingItemInfo.grabbedPositionX;
mTranslationY = mTouchPositionY - mDraggingItemInfo.grabbedPositionY;
mTranslationX = clip(mTranslationX, mTranslationLeftLimit, mTranslationRightLimit);
mTranslationY = clip(mTranslationY, mTranslationTopLimit, mTranslationBottomLimit);
}