public void DrawHorizontal(Canvas c, RecyclerView parent)
{
var top = parent.PaddingTop;
var bottom = parent.PaddingBottom;
RecyclerView.LayoutParams layoutParams = null;
View child = null;
var childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
child = parent.GetChildAt(i);
layoutParams = child.LayoutParameters.JavaCast <RecyclerView.LayoutParams>();
var left = child.Right + layoutParams.RightMargin;
var right = left + divider.IntrinsicHeight;
divider.SetBounds(left, top, right, bottom);
divider.Draw(c);
}
if (child != null)
{
child.Dispose();
}
if (layoutParams != null)
{
layoutParams.Dispose();
}
}
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
var colorItemViewHolder = (ColorItemViewHolder)holder;
var colorName = colors [position];
colorItemViewHolder.ColorItem.SetColor(colorName);
var layoutParams = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MatchParent,
ViewGroup.LayoutParams.WrapContent);
var colorPickerItemMargin = (int)context.Resources.GetDimension(Resource.Dimension.DigitalConfigColorPickerItemMargin);
// Add margins to first and last item to make it possible for user to tap on them.
if (position == 0)
{
layoutParams.SetMargins(0, colorPickerItemMargin, 0, 0);
}
else if (position == colors.Length - 1)
{
layoutParams.SetMargins(0, 0, 0, colorPickerItemMargin);
}
else
{
layoutParams.SetMargins(0, 0, 0, 0);
}
colorItemViewHolder.ItemView.LayoutParameters = layoutParams;
}
// Optional: custom inflating for ViewHolders without BindableViewHolderLayout attribute
protected override View GetCustomLayoutForViewHolder(ViewGroup parent, Type viewHolderType)
{
var textView = new TextView(parent.Context);
var lp = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.WrapContent);
textView.LayoutParameters = lp;
return(textView);
}
protected override BaseRecyclerViewHolder <ReportsCalendarDayViewModel> CreateViewHolder(ViewGroup parent, LayoutInflater inflater, int viewType)
{
var calendarDayCellViewHolder = new CalendarDayCellViewHolder(parent.Context);
var layoutParams = new RecyclerView.LayoutParams(parent.LayoutParameters);
layoutParams.Width = itemWidth;
layoutParams.Height = 51.DpToPixels(parent.Context);
calendarDayCellViewHolder.ItemView.LayoutParameters = layoutParams;
return(calendarDayCellViewHolder);
}
// Create new views (invoked by the layout manager)
public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
// create a new view
LocationPanel v = new LocationPanel(parent.Context);
// set the view's size, margins, paddings and layout parameters
RecyclerView.LayoutParams layoutParams = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.WrapContent);
int margin = (int)TypedValue.ApplyDimension(ComplexUnitType.Dip, 4, parent.Context.Resources.DisplayMetrics);
layoutParams.SetMargins(0, margin, 0, margin); // l, t, r, b
v.LayoutParameters = layoutParams;
return(new ViewHolder(v, OnClick, OnLongClick));
}
public override void OnDrawOver(Canvas cValue, RecyclerView parent, RecyclerView.State state)
{
int left = parent.PaddingLeft;
int right = parent.Width - parent.PaddingRight;
int childCount = parent.ChildCount;
for (int i = 1; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)child.LayoutParameters;
int size = _dividerHeight;
int top = child.Top - lp.TopMargin - _dividerHeight;
int bottom = top + size;
_divider.Bounds = new Rect(left, top, right, bottom);
_divider.Draw(cValue);
}
}
public override void OnDraw(Canvas c, RecyclerView parent, RecyclerView.State state)
{
int left = parent.PaddingLeft;
int right = parent.Width - parent.PaddingRight;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams parametres = (RecyclerView.LayoutParams)child.LayoutParameters;
int top = child.Bottom + parametres.BottomMargin;
int bottom = top + divider.IntrinsicHeight;
divider.SetBounds(left, top, right, bottom);
divider.Draw(c);
}
}
public void drawVertical(Canvas c, RecyclerView parent)
{
int left = parent.PaddingLeft;
int right = parent.Width - parent.PaddingRight;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams parameters = (RecyclerView.LayoutParams)child.LayoutParameters;
int top = child.Bottom + parameters.BottomMargin;
int bottom = top + mDivider.IntrinsicHeight;
mDivider.SetBounds(left, top, right, bottom);
mDivider.Draw(c);
}
}
public void drawHorizontal(Canvas c, RecyclerView parent)
{
int top = parent.PaddingTop;
int bottom = parent.Height - parent.PaddingBottom;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams parameters = (RecyclerView.LayoutParams)child.LayoutParameters;
int left = child.Right + parameters.RightMargin;
int right = left + mDivider.IntrinsicHeight;
mDivider.SetBounds(left, top, right, bottom);
mDivider.Draw(c);
}
}
private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
int heightSpec, int[] measuredDimension)
{
View view = recycler.GetViewForPosition(position);
if (view != null)
{
RecyclerView.LayoutParams p = (RecyclerView.LayoutParams)view.LayoutParameters;
int childWidthSpec = ViewGroup.GetChildMeasureSpec(widthSpec,
PaddingLeft + PaddingRight, p.Width);
int childHeightSpec = ViewGroup.GetChildMeasureSpec(heightSpec,
PaddingTop + PaddingBottom, p.Height);
view.Measure(childWidthSpec, childHeightSpec);
measuredDimension[0] = view.MeasuredWidth + p.LeftMargin + p.RightMargin;
measuredDimension[1] = view.MeasuredHeight + p.BottomMargin + p.TopMargin;
recycler.RecycleView(view);
}
}
private void DrawVertical(Canvas c, RecyclerView parent)
{
int left = parent.PaddingLeft;
int right = parent.Width - parent.PaddingRight;
int recyclerViewTop = parent.PaddingTop;
int recyclerViewBottom = parent.Height - parent.PaddingBottom;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams layoutParams = child.LayoutParameters.JavaCast <RecyclerView.LayoutParams>();
int top = Math.Max(recyclerViewTop, child.Bottom + layoutParams.BottomMargin);
int bottom = Math.Min(recyclerViewBottom, top + this.divider.IntrinsicHeight);
this.divider.SetBounds(left, top, right, bottom);
this.divider.Draw(c);
}
}
public void drawHorizontal(Canvas c, RecyclerView parent)
{
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams)child
.LayoutParameters;
int left = child.Left - layoutParams.LeftMargin;
int right = child.Right + layoutParams.RightMargin
+ mDivider.IntrinsicWidth;
int top = child.Bottom + layoutParams.BottomMargin;
int bottom = top + mDivider.IntrinsicHeight;
mDivider.SetBounds(left, top, right, bottom);
mDivider.Draw(c);
}
}
//竖屏时画竖线
public void DrawVertical(Canvas c, RecyclerView parent)
{
int left = parent.PaddingLeft;
int right = parent.Width - parent.PaddingRight;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
if (i + 1 == childCount) //最后一项不用画线
{
return;
}
View childView = parent.GetChildAt(i);
RecyclerView v = new RecyclerView(parent.Context);
RecyclerView.LayoutParams _params = (RecyclerView.LayoutParams)childView.LayoutParameters;
int top = childView.Bottom + _params.BottomMargin;
int bottom = top + _divider.IntrinsicHeight;
_divider.SetBounds(left, top, right, bottom);
_divider.Draw(c);
}
}
//横屏时画横线
public void DrawHorizontal(Canvas c, RecyclerView parent)
{
int top = parent.PaddingTop;
int bottom = parent.Height - parent.PaddingBottom;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
if (i == childCount) //最后一项不用画线
{
return;
}
View childView = parent.GetChildAt(i);
RecyclerView v = new RecyclerView(parent.Context);
RecyclerView.LayoutParams _params = (RecyclerView.LayoutParams)childView.LayoutParameters;
int left = childView.Right + _params.RightMargin;
int right = left + _divider.IntrinsicHeight;
_divider.SetBounds(left, top, right, bottom);
_divider.Draw(c);
}
}
/**
* 添加或者移除条目
*
* @param recycler RecyclerView
* @param displayRect 显示区域
* @param i 条目下标
*/
private void AddOrRemove(RecyclerView.Recycler recycler, Rect displayRect, int i)
{
View child = recycler.GetViewForPosition(i);
Rect rect = GetItemFrameByPosition(i);
if (!Rect.Intersects(displayRect, rect))
{
RemoveAndRecycleView(child, recycler); // 回收入暂存区
}
else
{
AddView(child);
MeasureChildWithMargins(child, mWidthUsed, mHeightUsed);
RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)child.LayoutParameters;// getLayoutParams();
LayoutDecorated(child,
rect.Left - mOffsetX + lp.LeftMargin + PaddingLeft,
rect.Top - mOffsetY + lp.TopMargin + PaddingTop,
rect.Right - mOffsetX - lp.RightMargin + PaddingLeft,
rect.Bottom - mOffsetY - lp.BottomMargin + PaddingTop);
}
}
public override void OnDraw(Canvas c, RecyclerView parent, RecyclerView.State state)
{
base.OnDraw(c, parent, state);
int dividerLeft = 32;
int dividerRight = parent.Width - 32;
for (int i = 0; i < parent.ChildCount; i++)
{
if (i != parent.ChildCount - 1)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams @params = (RecyclerView.LayoutParams)child.LayoutParameters;
int dividerTop = child.Bottom + @params.BottomMargin;
int dividerBottom = dividerTop + mDivider.IntrinsicHeight;
mDivider.SetBounds(dividerLeft, dividerTop, dividerRight, dividerBottom);
mDivider.Draw(c);
}
}
}
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
var colorItemViewHolder = (ColorItemViewHolder)holder;
var colorName = colors [position];
colorItemViewHolder.ColorItem.SetColor (colorName);
var layoutParams = new RecyclerView.LayoutParams (ViewGroup.LayoutParams.MatchParent,
ViewGroup.LayoutParams.WrapContent);
var colorPickerItemMargin = (int)context.Resources.GetDimension (Resource.Dimension.DigitalConfigColorPickerItemMargin);
// Add margins to first and last item to make it possible for user to tap on them.
if (position == 0) {
layoutParams.SetMargins (0, colorPickerItemMargin, 0, 0);
} else if (position == colors.Length - 1) {
layoutParams.SetMargins (0, 0, 0, colorPickerItemMargin);
} else {
layoutParams.SetMargins (0, 0, 0, 0);
}
colorItemViewHolder.ItemView.LayoutParameters = layoutParams;
}
public override void OnDraw(Canvas canvas, RecyclerView parent, RecyclerView.State state)
{
if (!initiated)
{
Init();
}
if (parent.GetItemAnimator().IsRunning)
{
View lastViewComingDown = null;
View firstViewComingUp = null;
// this is fixed
int left = 0;
int right = parent.Width;
// this we need to find out
int top = 0;
int bottom = 0;
// find relevant translating views
int childCount = parent.GetLayoutManager().ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetLayoutManager().GetChildAt(i);
if (child.TranslationY < 0)
{
// view is coming down
lastViewComingDown = child;
}
else if (child.TranslationY > 0)
{
// view is coming up
if (firstViewComingUp == null)
{
firstViewComingUp = child;
}
}
}
if (lastViewComingDown != null && firstViewComingUp != null)
{
// views are coming down AND going up to fill the void
top = lastViewComingDown.Bottom + (int)lastViewComingDown.TranslationY;
bottom = firstViewComingUp.Top + (int)firstViewComingUp.TranslationY;
}
else if (lastViewComingDown != null)
{
// views are going down to fill the void
top = lastViewComingDown.Bottom + (int)lastViewComingDown.TranslationY;
bottom = lastViewComingDown.Bottom;
}
else if (firstViewComingUp != null)
{
// views are coming up to fill the void
top = firstViewComingUp.Top;
bottom = firstViewComingUp.Top + (int)firstViewComingUp.TranslationY;
}
background.SetBounds(left, top, right, bottom);
background.Draw(canvas);
}
int dividerLeft = parent.PaddingLeft;
int dividerRight = parent.Width - parent.PaddingRight;
int childCount1 = parent.ChildCount;
for (int i = 0; i < childCount1; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams lParams = (RecyclerView.LayoutParams)child.LayoutParameters;
int dividerTop = child.Bottom + lParams.BottomMargin;
int dividerBottom = dividerTop + divider.IntrinsicHeight;
divider.SetBounds(dividerLeft, dividerTop, dividerRight, dividerBottom);
divider.Draw(canvas);
}
base.OnDraw(canvas, parent, state);
}
public override void OnDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state)
{
RecyclerView.Adapter adapter = parent.GetAdapter();
if (adapter == null)
{
return;
}
int itemCount = adapter.ItemCount;
if (orientation == VERTICAL)
{
bool isRtl = ViewCompat.GetLayoutDirection(parent) == ViewCompat.LayoutDirectionRtl;
int paddingLeft;
int paddingRight;
if (isRtl)
{
paddingLeft = paddingEnd;
paddingRight = paddingStart;
}
else
{
paddingLeft = paddingStart;
paddingRight = paddingEnd;
}
int left = parent.PaddingLeft + paddingLeft;
int right = parent.Width - parent.PaddingRight - paddingRight;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)child.LayoutParameters;
int position = parent.GetChildLayoutPosition(child);
bool show;
if (showDividerHelper != null)
{
show = showDividerHelper.ShowDivider(position + 1);
}
else
{
show = (position != itemCount - 1) || showLastDivider;
}
if (show)
{
int top = child.Bottom + lp.BottomMargin;
if (overlap)
{
top -= thickness;
}
int bottom = top + thickness;
rect.Set(left, top, right, bottom);
c.DrawRect(rect, paint);
}
if (position == 0)
{
if (showDividerHelper != null)
{
show = showDividerHelper.ShowDivider(0);
}
else
{
show = showFirstDivider;
}
if (show)
{
int bottom = child.Top + lp.TopMargin;
if (overlap)
{
bottom += thickness;
}
int top = bottom - thickness;
rect.Set(left, top, right, bottom);
c.DrawRect(rect, paint);
}
}
}
}
else
{
int top = parent.PaddingTop + paddingStart;
int bottom = parent.Height - parent.PaddingBottom - paddingEnd;
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)child.LayoutParameters;
int position = parent.GetChildLayoutPosition(child);
bool show;
if (showDividerHelper != null)
{
show = showDividerHelper.ShowDivider(position + 1);
}
else
{
show = (position != itemCount - 1) || showLastDivider;
}
if (show)
{
int left = child.Right + lp.RightMargin;
if (overlap)
{
left -= thickness;
}
int right = left + thickness;
rect.Set(left, top, right, bottom);
c.DrawRect(rect, paint);
}
if (position == 0)
{
if (showDividerHelper != null)
{
show = showDividerHelper.ShowDivider(0);
}
else
{
show = showFirstDivider;
}
if (show)
{
int right = child.Left + lp.LeftMargin;
if (overlap)
{
right += thickness;
}
int left = right - thickness;
rect.Set(left, top, right, bottom);
c.DrawRect(rect, paint);
}
}
}
}
}
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state)
{
int orientation = 0;
int headerCount = 0, footerCount = 0, dataCount;
var adapterObj = parent.GetAdapter();
var adapterType = adapterObj.GetType();
if (adapterType.IsAssignableFrom(typeof(RecyclerArrayAdapter <>)))
{
headerCount = (int)adapterType.GetMethod("GetHeaderCount").Invoke(adapterObj, null);
footerCount = (int)adapterType.GetMethod("GetFooterCount").Invoke(adapterObj, null);
dataCount = (int)adapterType.GetMethod("GetCount").Invoke(adapterObj, null);
}
else
{
dataCount = parent.GetAdapter().ItemCount;
}
int dataStartPosition = headerCount;
int dataEndPosition = headerCount + dataCount;
RecyclerView.LayoutManager layoutManager = parent.GetLayoutManager();
if (layoutManager is StaggeredGridLayoutManager)
{
orientation = ((StaggeredGridLayoutManager)layoutManager).Orientation;
}
else if (layoutManager is GridLayoutManager)
{
orientation = ((GridLayoutManager)layoutManager).Orientation;
}
else if (layoutManager is LinearLayoutManager)
{
orientation = ((LinearLayoutManager)layoutManager).Orientation;
}
int start, end;
if (orientation == OrientationHelper.Vertical)
{
start = parent.PaddingLeft + mPaddingLeft;
end = parent.Width - parent.PaddingRight - mPaddingRight;
}
else
{
start = parent.PaddingTop + mPaddingLeft;
end = parent.Height - parent.PaddingBottom - mPaddingRight;
}
int childCount = parent.ChildCount;
for (int i = 0; i < childCount; i++)
{
View child = parent.GetChildAt(i);
int position = parent.GetChildAdapterPosition(child);
if (position >= dataStartPosition && position < dataEndPosition - 1 ||//数据项除了最后一项
(position == dataEndPosition - 1 && mDrawLastItem) || //数据项最后一项
(!(position >= dataStartPosition && position < dataEndPosition) && mDrawHeaderFooter) //header&footer且可绘制
)
{
if (orientation == OrientationHelper.Vertical)
{
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams)child.LayoutParameters;
int top = child.Bottom + layoutParams.BottomMargin;
int bottom = top + mHeight;
mColorDrawable.SetBounds(start, top, end, bottom);
mColorDrawable.Draw(c);
}
else
{
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams)child.LayoutParameters;
int left = child.Right + layoutParams.RightMargin;
int right = left + mHeight;
mColorDrawable.SetBounds(left, start, right, end);
mColorDrawable.Draw(c);
}
}
}
}
public override void OnDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state)
{
if (mDivider == null)
{
base.OnDrawOver(c, parent, state);
return;
}
// Initialization needed to avoid compiler warning
int left = 0, right = 0, top = 0, bottom = 0, size;
int orientation = getOrientation(parent);
int childCount = parent.ChildCount;
if (orientation == LinearLayoutManager.Vertical)
{
size = mDivider.IntrinsicHeight;
left = parent.PaddingLeft;
right = parent.Width - parent.PaddingRight;
}
else
{ //horizontal
size = mDivider.IntrinsicWidth;
top = parent.PaddingTop;
bottom = parent.Height - parent.PaddingBottom;
}
for (int i = mShowFirstDivider ? 0 : 1; i < childCount; i++)
{
View child = parent.GetChildAt(i);
RecyclerView.LayoutParams parametrs = (RecyclerView.LayoutParams)child.LayoutParameters;
if (orientation == LinearLayoutManager.Vertical)
{
top = child.Top - parametrs.TopMargin;
bottom = top + size;
}
else
{ //horizontal
left = child.Left - parametrs.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);
RecyclerView.LayoutParams parametrs = (RecyclerView.LayoutParams)child.LayoutParameters;
if (orientation == LinearLayoutManager.Vertical)
{
top = child.Bottom + parametrs.BottomMargin;
bottom = top + size;
}
else
{ // horizontal
left = child.Right + parametrs.RightMargin;
right = left + size;
}
mDivider.SetBounds(left, top, right, bottom);
mDivider.Draw(c);
}
}
