private void FitSize2(int position, bool scrollingLeft, int columnHeaderScrollPosition, int columnHeaderOffset,
int columnHeaderFirstItem)
{
int columnCacheWidth = mColumnHeaderLayoutManager.GetCacheWidth(position);
Android.Views.View column = mColumnHeaderLayoutManager.FindViewByPosition(position);
if (column != null)
{
// Loop for all rows which are visible.
for (int j = FindFirstVisibleItemPosition(); j < FindLastVisibleItemPosition() + 1; j++)
{
// Get CellRowRecyclerView
CellRecyclerView child = (CellRecyclerView)FindViewByPosition(j);
if (child != null)
{
ColumnLayoutManager childLayoutManager = (ColumnLayoutManager)child.GetLayoutManager();
// Checking Scroll position is necessary. Because, even if they have same width
// values, their scroll positions can be different.
if (!scrollingLeft && columnHeaderScrollPosition != child.GetScrolledX())
{
// Column Header RecyclerView has the right scroll position. So,
// considering it
childLayoutManager.ScrollToPositionWithOffset(columnHeaderFirstItem, columnHeaderOffset);
}
Fit2(position, j, columnCacheWidth, column, childLayoutManager);
}
}
}
}
private void Fit2(int xPosition, int yPosition, int columnCachedWidth, Android.Views.View column,
ColumnLayoutManager childLayoutManager)
{
int cellCacheWidth = GetCacheWidth(yPosition, xPosition);
Android.Views.View cell = childLayoutManager.FindViewByPosition(xPosition);
// Control whether the cell needs to be fitted by column header or not.
if (cell != null)
{
if (cellCacheWidth != columnCachedWidth || mNeedSetLeft)
{
// This is just for setting width value
if (cellCacheWidth != columnCachedWidth)
{
cellCacheWidth = columnCachedWidth;
TableViewUtils.SetWidth(cell, cellCacheWidth);
SetCacheWidth(yPosition, xPosition, cellCacheWidth);
}
// The left & right values of Column header can be considered. Because this
// method will be worked
// after drawing process of main thread.
if (column.Left != cell.Left || column.Right != cell.Right)
{
// TODO: + 1 is for decoration item. It should be gotten from a generic
// method of layoutManager
// Set right & left values
cell.Left = column.Left;
cell.Right = column.Right + 1;
childLayoutManager.LayoutDecoratedWithMargins(cell, cell.Left, cell.Top, cell.Right,
cell.Bottom);
mNeedSetLeft = true;
}
}
}
}
public override void MeasureChildWithMargins(Android.Views.View child, int widthUsed, int heightUsed)
{
base.MeasureChildWithMargins(child, widthUsed, heightUsed);
// If has fixed width is true, than calculation of the column width is not necessary.
if (mTableView.HasFixedWidth())
{
return;
}
int position = GetPosition(child);
ColumnLayoutManager childLayoutManager =
(ColumnLayoutManager)((CellRecyclerView)child).GetLayoutManager();
// the below codes should be worked when it is scrolling vertically
if (mCellRecyclerView.ScrollState != RecyclerView.ScrollStateIdle)
{
if (childLayoutManager.IsNeedFit())
{
// Scrolling up
if (mLastDy < 0)
{
Log.Error(LogTag, position + " fitWidthSize all vertically up");
FitWidthSize(true);
}
else
{
// Scrolling down
Log.Error(LogTag, position + " fitWidthSize all vertically down");
FitWidthSize(false);
}
// all columns have been fitted.
childLayoutManager.ClearNeedFit();
}
// Set the right initialPrefetch size to improve performance
childLayoutManager.InitialPrefetchItemCount = childLayoutManager.ChildCount;
}
else
{
// That means,populating for the first time like fetching all data to display.
// It shouldn't be worked when it is scrolling horizontally ."getLastDx() == 0"
// control for it.
if (childLayoutManager.GetLastDx() == 0 &&
mCellRecyclerView.ScrollState == RecyclerView.ScrollStateIdle)
{
if (childLayoutManager.IsNeedFit())
{
mNeedFit = true;
// all columns have been fitted.
childLayoutManager.ClearNeedFit();
}
if (mNeedFit)
{
// for the first time to populate adapter
if (mRowHeaderLayoutManager.FindLastVisibleItemPosition() == position)
{
FitWidthSize2(false);
Log.Error(LogTag, position + " fitWidthSize populating data for the first time");
mNeedFit = false;
}
}
}
}
}
private int Fit(int xPosition, int yPosition, int left, int right, int columnCachedWidth)
{
CellRecyclerView child = (CellRecyclerView)FindViewByPosition(yPosition);
if (child != null)
{
ColumnLayoutManager childLayoutManager = (ColumnLayoutManager)child.GetLayoutManager();
int cellCacheWidth = GetCacheWidth(yPosition, xPosition);
Android.Views.View cell = childLayoutManager.FindViewByPosition(xPosition);
// Control whether the cell needs to be fitted by column header or not.
if (cell != null)
{
if (cellCacheWidth != columnCachedWidth || mNeedSetLeft)
{
// This is just for setting width value
if (cellCacheWidth != columnCachedWidth)
{
cellCacheWidth = columnCachedWidth;
TableViewUtils.SetWidth(cell, cellCacheWidth);
SetCacheWidth(yPosition, xPosition, cellCacheWidth);
}
// Even if the cached values are same, the left & right value wouldn't change.
// mNeedSetLeft & the below lines for it.
if (left != IgnoreLeft && cell.Left != left)
{
// Calculate scroll distance
int scrollX = Math.Max(cell.Left, left) - Math.Min(cell.Left, left);
// Update its left
cell.Left = left;
int offset = mHorizontalListener.GetScrollPositionOffset();
// It shouldn't be scroll horizontally and the problem is gotten just for
// first visible item.
if (offset > 0 && xPosition == childLayoutManager.FindFirstVisibleItemPosition() &&
mCellRecyclerView.ScrollState != RecyclerView.ScrollStateIdle)
{
int scrollPosition = mHorizontalListener.GetScrollPosition();
offset = mHorizontalListener.GetScrollPositionOffset() + scrollX;
// Update scroll position offset value
mHorizontalListener.SetScrollPositionOffset(offset);
// Scroll considering to the desired value.
childLayoutManager.ScrollToPositionWithOffset(scrollPosition, offset);
}
}
if (cell.Width != cellCacheWidth)
{
if (left != IgnoreLeft)
{
// TODO: + 1 is for decoration item. It should be gotten from a
// generic method of layoutManager
// Set right
right = cell.Left + cellCacheWidth + 1;
cell.Right = right;
childLayoutManager.LayoutDecoratedWithMargins(cell, cell.Left, cell.Top, cell.Right,
cell.Bottom);
}
mNeedSetLeft = true;
}
}
}
}
return(right);
}
