internal Rect GetCellBounds(int p_row, int p_column, bool p_ignoreMerged)
{
if (Excel == null)
{
return(new Rect());
}
// 包含合并情况
CellLayoutModel model = null;
if (!p_ignoreMerged)
{
model = Excel.GetCellLayoutModel(RowViewportIndex, ColumnViewportIndex, SheetArea.Cells);
}
CellLayout layout = (model == null) ? null : model.FindCell(p_row, p_column);
if (layout != null)
{
return(new Rect(layout.X, layout.Y, layout.Width, layout.Height));
}
RowLayoutModel rowLayoutModel = Excel.GetRowLayoutModel(RowViewportIndex, SheetArea.Cells);
ColumnLayoutModel columnLayoutModel = Excel.GetColumnLayoutModel(ColumnViewportIndex, SheetArea.Cells);
if (rowLayoutModel == null || columnLayoutModel == null)
{
return(new Rect());
}
RowLayout layout2 = rowLayoutModel.Find(p_row);
ColumnLayout layout3 = columnLayoutModel.Find(p_column);
double x = -1.0;
double y = -1.0;
double width = 0.0;
double height = 0.0;
if (layout2 != null)
{
y = layout2.Y;
height = layout2.Height;
}
if (layout3 != null)
{
x = layout3.X;
width = layout3.Width;
}
return(new Rect(x, y, width, height));
}
//*** CellsPanel.Measure -> RowsLayer.Measure -> RowItem.UpdateChildren -> 行列改变时 CellItem.UpdateChildren -> RowItem.Measure -> CellItem.Measure ***//
public void UpdateChildren(bool p_updateAllCell)
{
// 频繁增删Children子元素会出现卡顿现象！
// Children = Cells + _recycledCells
ColumnLayoutModel colLayoutModel = GetColumnLayoutModel();
int less = colLayoutModel.Count - Children.Count + (_headingOverflowCell == null ? 0 : 1) + (_trailingOverflowCell == null ? 0 : 1);
if (less > 0)
{
for (int i = 0; i < less; i++)
{
var cell = new CellItem(this);
Children.Add(cell);
_recycledCells.Add(cell);
}
}
// 先回收不可见格
var cols = Cells.Values.ToList();
foreach (var cell in cols)
{
ColumnLayout layout = colLayoutModel.FindColumn(cell.Column);
if (layout == null || layout.Width <= 0.0)
{
PushRecycledCell(cell);
}
}
int updateCells = 0;
ContainsSpanCell = false;
SpanGraph cachedSpanGraph = OwnPanel.CachedSpanGraph;
for (int i = 0; i < colLayoutModel.Count; i++)
{
ColumnLayout colLayout = colLayoutModel[i];
if (colLayout.Width <= 0.0)
{
continue;
}
byte state = cachedSpanGraph.GetState(Row, colLayout.Column);
CellLayout layout = null;
if (state > 0)
{
CellLayoutModel cellLayoutModel = OwnPanel.GetCellLayoutModel();
if (cellLayoutModel != null)
{
layout = cellLayoutModel.FindCell(Row, colLayout.Column);
if (layout != null)
{
ContainsSpanCell = true;
}
}
}
CellItem cell = GetCell(colLayout.Column);
bool rangeChanged = false;
if (layout != null && layout.Width > 0.0 && layout.Height > 0.0)
{
CellRange range = ClipCellRange(layout.GetCellRange());
rangeChanged = (Row != range.Row) || (range.Column != colLayout.Column);
// 跨多列
if (layout.ColumnCount > 1)
{
// 移除跨度区域内的所有格
int maxCol = (layout.Column + layout.ColumnCount) - 1;
for (int j = i + 1; j < colLayoutModel.Count; j++)
{
int curCol = colLayoutModel[j].Column;
if (curCol > maxCol)
{
break;
}
i = j;
CellItem ci = GetCell(curCol);
if (ci != null)
{
PushRecycledCell(ci);
}
}
}
}
// 跨度不同不显示
if (rangeChanged)
{
if (cell != null)
{
PushRecycledCell(cell);
}
continue;
}
bool updated = false;
if (cell == null)
{
// 重新利用回收的格
cell = _recycledCells[0];
_recycledCells.RemoveAt(0);
cell.Column = colLayout.Column;
Cells.Add(colLayout.Column, cell);
updated = true;
}
cell.CellLayout = layout;
if (p_updateAllCell || updated)
{
cell.UpdateChildren();
updateCells++;
}
}
CellOverflowLayoutModel cellOverflowLayoutModel = OwnPanel.GetCellOverflowLayoutModel(Row);
if ((cellOverflowLayoutModel != null) && !cellOverflowLayoutModel.IsEmpty)
{
if (cellOverflowLayoutModel.HeadingOverflowlayout != null)
{
if (HeadingOverflowCell == null)
{
HeadingOverflowCell = new CellItem(this);
}
if (HeadingOverflowCell.Column != cellOverflowLayoutModel.HeadingOverflowlayout.Column)
{
HeadingOverflowCell.Column = cellOverflowLayoutModel.HeadingOverflowlayout.Column;
HeadingOverflowCell.UpdateChildren();
updateCells++;
}
}
else
{
HeadingOverflowCell = null;
}
if (cellOverflowLayoutModel.TrailingOverflowlayout != null)
{
if (TrailingOverflowCell == null)
{
TrailingOverflowCell = new CellItem(this);
}
if (TrailingOverflowCell.Column != cellOverflowLayoutModel.TrailingOverflowlayout.Column)
{
TrailingOverflowCell.Column = cellOverflowLayoutModel.TrailingOverflowlayout.Column;
TrailingOverflowCell.UpdateChildren();
updateCells++;
}
}
else
{
TrailingOverflowCell = null;
}
}
else
{
HeadingOverflowCell = null;
TrailingOverflowCell = null;
}
#if !IOS
// iOS在 MeasureOverride 内部调用子元素的 InvalidateMeasure 会造成死循环！
// 不重新测量会造成如：迷你图忽大忽小的情况
if (updateCells > 0)
{
InvalidateMeasure();
}
#endif
}
CellOverflowLayout BuildCellOverflowLayoutModelForRight(Cell bindingCell, int rowIndex, CellOverflowLayoutModel result, bool buildForCenter, int deadColumnIndex, object textFormattingMode, bool useLayoutRounding)
{
ICellsSupport dataContext = Viewport.GetDataContext();
int index = bindingCell.Column.Index;
if (index > deadColumnIndex)
{
Column column = dataContext.Columns[index];
CellLayoutModel cellLayoutModel = Viewport.GetCellLayoutModel();
Column column2 = dataContext.Columns[index - 1];
int num2 = column2.Index;
if ((cellLayoutModel != null) && (cellLayoutModel.FindCell(rowIndex, num2) != null))
{
return(null);
}
Cell cachedCell = Viewport.CellCache.GetCachedCell(rowIndex, num2);
if ((cachedCell != null) && !string.IsNullOrEmpty(cachedCell.Text))
{
return(null);
}
float zoomFactor = Viewport.Excel.ZoomFactor;
Size textSize = MeasureHelper.MeasureTextInCell(bindingCell, new Size(double.PositiveInfinity, double.PositiveInfinity), (double)zoomFactor, null, textFormattingMode, useLayoutRounding);
double width = MeasureHelper.ConvertTextSizeToExcelCellSize(textSize, (double)zoomFactor).Width;
double num5 = column.ActualWidth * zoomFactor;
if (buildForCenter)
{
width /= 2.0;
num5 /= 2.0;
}
double num6 = num5;
if (num6 < width)
{
CellOverflowLayout layout2 = new CellOverflowLayout(column.Index, num6)
{
StartingColumn = column.Index
};
for (int i = index - 1; (i >= 0) && (i >= deadColumnIndex); i--)
{
column2 = dataContext.Columns[i];
num2 = column2.Index;
if ((cellLayoutModel != null) && (cellLayoutModel.FindCell(rowIndex, num2) != null))
{
layout2.BackgroundWidth = num6;
layout2.StartingColumn = dataContext.Columns[i + 1].Index;
break;
}
if (((cachedCell != null) && (result != null)) && result.Contains(column2.Index))
{
layout2.BackgroundWidth = num6;
layout2.StartingColumn = dataContext.Columns[i + 1].Index;
break;
}
cachedCell = Viewport.CellCache.GetCachedCell(rowIndex, num2);
if ((cachedCell != null) && !string.IsNullOrEmpty(cachedCell.Text))
{
layout2.BackgroundWidth = num6;
layout2.StartingColumn = dataContext.Columns[i + 1].Index;
break;
}
num6 += column2.ActualWidth * zoomFactor;
if (((num6 >= width) || (i == 0)) || (i <= deadColumnIndex))
{
layout2.BackgroundWidth = num6;
layout2.StartingColumn = column2.Index;
break;
}
}
if (layout2.StartingColumn != column.Index)
{
layout2.ContentWidth = MeasureHelper.ConvertTextSizeToExcelCellSize(textSize, (double)zoomFactor).Width;
layout2.LeftBackgroundWidth = num6;
return(layout2);
}
}
}
return(null);
}