protected override Size MeasureOverride(Size availableSize)
{
if (Row == -1 || availableSize.Width == 0.0 || availableSize.Height == 0.0)
{
foreach (UIElement elem in Children)
{
elem.Measure(_szEmpty);
}
return(_szEmpty);
}
ColumnLayoutModel colLayoutModel = GetColumnLayoutModel();
RowLayout layout = OwnPanel.GetRowLayoutModel().FindRow(Row);
CellOverflowLayoutModel cellOverflowLayoutModel = OwnPanel.GetCellOverflowLayoutModel(Row);
RowWidth = 0.0;
double height = 0.0;
foreach (ColumnLayout colLayout in colLayoutModel)
{
RowWidth += colLayout.Width;
CellItem cell = GetCell(colLayout.Column);
if (cell == null)
{
continue;
}
double w = colLayout.Width;
double h = layout.Height;
if (cell.CellLayout != null)
{
w = cell.CellLayout.Width;
h = cell.CellLayout.Height;
}
cell.CellOverflowLayout = null;
if (cell.CellLayout == null && cellOverflowLayoutModel != null)
{
var cellOverflowLayout = cellOverflowLayoutModel.GetCellOverflowLayout(colLayout.Column);
if ((cellOverflowLayout != null) && (cellOverflowLayout.Column == colLayout.Column))
{
cell.CellOverflowLayout = cellOverflowLayout;
}
}
cell.Measure(new Size(w, h));
if (h > height)
{
height = h;
}
}
if (_recycledCells.Count > 0)
{
foreach (var cell in _recycledCells)
{
cell.Measure(_szEmpty);
}
}
double width = Math.Min(RowWidth, OwnPanel.GetViewportSize().Width);
if (cellOverflowLayoutModel != null)
{
Worksheet worksheet = OwnPanel.Excel.ActiveSheet;
float zoomFactor = OwnPanel.Excel.ZoomFactor;
if (cellOverflowLayoutModel.HeadingOverflowlayout != null)
{
HeadingOverflowCell.CellOverflowLayout = cellOverflowLayoutModel.HeadingOverflowlayout;
double num8 = worksheet.GetActualColumnWidth(cellOverflowLayoutModel.HeadingOverflowlayout.Column, SheetArea.Cells) * zoomFactor;
Size size = new Size(num8, layout.Height);
HeadingOverflowCell.Measure(size);
}
if (cellOverflowLayoutModel.TrailingOverflowlayout != null)
{
TrailingOverflowCell.CellOverflowLayout = cellOverflowLayoutModel.TrailingOverflowlayout;
double num9 = worksheet.GetActualColumnWidth(cellOverflowLayoutModel.TrailingOverflowlayout.Column, SheetArea.Cells) * zoomFactor;
Size size2 = new Size(num9, layout.Height);
TrailingOverflowCell.Measure(size2);
}
}
return(new Size(width, height));
}
internal Rect GetRangeBounds(CellRange range, out bool isLeftVisible, out bool isRightVisible, out bool isTopVisible, out bool isBottomVisible)
{
isLeftVisible = true;
isRightVisible = true;
isTopVisible = true;
isBottomVisible = true;
RowLayoutModel rowLayoutModel = GetRowLayoutModel();
ColumnLayoutModel viewportColumnLayoutModel = Excel.GetViewportColumnLayoutModel(ColumnViewportIndex);
int row = (rowLayoutModel.Count > 0) ? rowLayoutModel[0].Row : -1;
int num2 = (rowLayoutModel.Count > 0) ? rowLayoutModel[rowLayoutModel.Count - 1].Row : -1;
int column = (viewportColumnLayoutModel.Count > 0) ? viewportColumnLayoutModel[0].Column : -1;
int num4 = (viewportColumnLayoutModel.Count > 0) ? viewportColumnLayoutModel[viewportColumnLayoutModel.Count - 1].Column : -1;
if (!range.Intersects(row, column, (num2 - row) + 1, (num4 - column) + 1))
{
return(Rect.Empty);
}
int index = Math.Max(range.Row, row);
int num6 = Math.Max(range.Column, column);
int num7 = Math.Min((range.Row + range.RowCount) - 1, num2);
int num8 = Math.Min((range.Column + range.ColumnCount) - 1, num4);
RowLayout layout = rowLayoutModel.Find(index);
RowLayout layout2 = rowLayoutModel.Find(num7);
ColumnLayout layout3 = viewportColumnLayoutModel.Find(num6);
ColumnLayout layout4 = viewportColumnLayoutModel.Find(num8);
double x = -1.0;
double y = -1.0;
double height = 0.0;
double width = 0.0;
if ((layout != null) && (layout2 != null))
{
y = layout.Y;
height = (layout2.Y + layout2.Height) - layout.Y;
}
else if (rowLayoutModel.Count > 0)
{
y = rowLayoutModel[0].Y;
height = (rowLayoutModel[rowLayoutModel.Count - 1].Y + rowLayoutModel[rowLayoutModel.Count - 1].Height) - y;
}
if ((layout3 != null) && (layout4 != null))
{
x = layout3.X;
width = (layout4.X + layout4.Width) - layout3.X;
}
else if (viewportColumnLayoutModel.Count > 0)
{
x = viewportColumnLayoutModel[0].X;
width = (viewportColumnLayoutModel[viewportColumnLayoutModel.Count - 1].X + viewportColumnLayoutModel[viewportColumnLayoutModel.Count - 1].Width) - x;
}
if (range.Column < column)
{
isLeftVisible = false;
}
if (range.Row < row)
{
isTopVisible = false;
}
if ((num4 != -1) && (((range.Column + range.ColumnCount) - 1) > num4))
{
isRightVisible = false;
}
if ((num2 != -1) && (((range.Row + range.RowCount) - 1) > num2))
{
isBottomVisible = false;
}
return(new Rect(PointToClient(new Point(x, y)), new Size(width, height)));
}
void ArrangeRowGroups(double buttonSize)
{
double num4;
double y;
double num3 = Math.Max((double)0.0, (double)((buttonSize - 6.0) / 2.0)) + 2.0;
_excel.GetSheetLayout();
RowLayoutModel rowLayoutModel = _excel.GetRowLayoutModel(ViewportIndex, SheetArea.Cells);
foreach (GroupDotInfo info in _groupDotInfos)
{
RowLayout layout = rowLayoutModel.Find(info.Index);
if ((layout != null) && (layout.Height >= 2.0))
{
num4 = (base.Location.X + (info.Level * buttonSize)) + num3;
y = layout.Y + Math.Max((double)0.0, (double)((layout.Height - 2.0) / 2.0));
info.Dot.Arrange(new Rect(base.PointToClient(new Point(num4, y)), _dotSize));
}
}
RangeGroupDirection direction = _excel.ActiveSheet.RowRangeGroup.Direction;
foreach (GroupLineInfo info2 in _groupLineInfos)
{
RowLayout layout2 = rowLayoutModel.FindRow(info2.Start);
RowLayout layout3 = rowLayoutModel.FindRow(info2.End);
if ((layout2 != null) && (layout3 != null))
{
Rectangle line = info2.Line;
num4 = (base.Location.X + (info2.Level * buttonSize)) + num3;
y = layout2.Y;
switch (direction)
{
case RangeGroupDirection.Forward:
y++;
break;
case RangeGroupDirection.Backward:
y--;
break;
}
double num8 = 2.0;
double num9 = Math.Max((double)0.0, (double)(((layout3.Y + layout3.Height) - layout2.Y) - 1.0));
line.Arrange(new Rect(base.PointToClient(new Point(num4, y)), new Size(num8, num9)));
Rectangle startLine = info2.StartLine;
if (startLine != null)
{
double num10 = Math.Min((double)6.0, (double)(buttonSize - 2.0));
if (num10 > 0.0)
{
if (direction == RangeGroupDirection.Backward)
{
y = (y + num9) - 2.0;
}
if ((y >= layout2.Y) && (y < (layout3.Y + layout3.Height)))
{
startLine.Arrange(new Rect(base.PointToClient(new Point(num4, y)), new Size(num10, 2.0)));
}
}
}
}
}
foreach (GroupButtonInfo info3 in _groupButtonInfos)
{
RowLayout layout4 = rowLayoutModel.FindRow(info3.Button.Index);
if (layout4 != null)
{
GroupButton button = info3.Button;
double num11 = Math.Max((double)0.0, (double)((layout4.Height - buttonSize) / 2.0));
num4 = (base.Location.X + (button.Level * buttonSize)) + 2.0;
y = layout4.Y + num11;
double num12 = buttonSize;
double num13 = Math.Min(buttonSize, layout4.Height);
button.Arrange(new Rect(base.PointToClient(new Point(num4, y)), new Size(num12, num13)));
Rectangle rectangle3 = info3.Line;
if ((rectangle3 != null) && (num13 < layout4.Height))
{
num4 = (base.Location.X + (button.Level * buttonSize)) + num3;
y = layout4.Y;
double num14 = 2.0;
double num15 = num11;
if (info3.LineDirection == RangeGroupDirection.Backward)
{
y += num11 + num13;
num15 = (layout4.Height - num13) - num11;
}
rectangle3.Arrange(new Rect(base.PointToClient(new Point(num4, y)), new Size(num14, num15)));
}
}
}
}
internal Rect GetRangeBounds(CellRange range, SheetArea area)
{
SheetSpanModel spanModel = null;
if (Excel.ActiveSheet != null)
{
switch (area)
{
case SheetArea.Cells:
spanModel = Excel.ActiveSheet.SpanModel;
break;
case (SheetArea.CornerHeader | SheetArea.RowHeader):
spanModel = Excel.ActiveSheet.RowHeaderSpanModel;
break;
case SheetArea.ColumnHeader:
spanModel = Excel.ActiveSheet.ColumnHeaderSpanModel;
break;
}
}
if (spanModel != null)
{
CellRange range2 = spanModel.Find(range.Row, range.Column);
if (((range2 != null) && (range2.RowCount >= range.RowCount)) && (range2.ColumnCount >= range.ColumnCount))
{
range = range2;
}
}
RowLayoutModel rowLayoutModel = Excel.GetRowLayoutModel(RowViewportIndex, area);
ColumnLayoutModel columnLayoutModel = Excel.GetColumnLayoutModel(ColumnViewportIndex, area);
int row = (rowLayoutModel.Count > 0) ? rowLayoutModel[0].Row : -1;
int num2 = (rowLayoutModel.Count > 0) ? rowLayoutModel[rowLayoutModel.Count - 1].Row : -1;
int column = (columnLayoutModel.Count > 0) ? columnLayoutModel[0].Column : -1;
int num4 = (columnLayoutModel.Count > 0) ? columnLayoutModel[columnLayoutModel.Count - 1].Column : -1;
if (!range.Intersects(row, column, (num2 - row) + 1, (num4 - column) + 1))
{
return(Rect.Empty);
}
int index = Math.Max(range.Row, row);
int num6 = Math.Max(range.Column, column);
int num7 = Math.Min((range.Row + range.RowCount) - 1, num2);
int num8 = Math.Min((range.Column + range.ColumnCount) - 1, num4);
RowLayout layout = rowLayoutModel.Find(index);
RowLayout layout2 = rowLayoutModel.Find(num7);
ColumnLayout layout3 = columnLayoutModel.Find(num6);
ColumnLayout layout4 = columnLayoutModel.Find(num8);
double x = -1.0;
double y = -1.0;
double height = 0.0;
double width = 0.0;
if ((layout != null) && (layout2 != null))
{
y = layout.Y;
height = (layout2.Y + layout2.Height) - layout.Y;
}
else if (rowLayoutModel.Count > 0)
{
y = rowLayoutModel[0].Y;
height = (rowLayoutModel[rowLayoutModel.Count - 1].Y + rowLayoutModel[rowLayoutModel.Count - 1].Height) - y;
}
if ((layout3 != null) && (layout4 != null))
{
x = layout3.X;
width = (layout4.X + layout4.Width) - layout3.X;
}
else if (columnLayoutModel.Count > 0)
{
x = columnLayoutModel[0].X;
width = (columnLayoutModel[columnLayoutModel.Count - 1].X + columnLayoutModel[columnLayoutModel.Count - 1].Width) - x;
}
return(new Rect(PointToClient(new Point(x, y)), new Size(width, height)));
}
protected override Size MeasureOverride(Size availableSize)
{
BuildSpanGraph();
// 频繁增删Children子元素会出现卡顿现象！
// Children = _rows + _recycledRows
RowLayoutModel rowLayoutModel = GetRowLayoutModel();
int less = rowLayoutModel.Count - Children.Count;
if (less > 0)
{
for (int i = 0; i < less; i++)
{
HeaderItem rowItem = new HeaderItem(this);
Children.Add(rowItem);
_recycledRows.Add(rowItem);
}
}
// 先回收不可见行
List <HeaderItem> rows = _rows.Values.ToList();
foreach (var rowItem in rows)
{
RowLayout layout = rowLayoutModel.FindRow(rowItem.Row);
if (layout == null || layout.Height <= 0.0)
{
_recycledRows.Add(rowItem);
_rows.Remove(rowItem.Row);
rowItem.Row = -1;
}
}
double x = Location.X;
double y = Location.Y;
double maxWidth = 0.0;
foreach (RowLayout layout in rowLayoutModel)
{
if (layout.Height <= 0.0)
{
continue;
}
bool updateAllCell = false;
HeaderItem rowItem = null;
if (!_rows.TryGetValue(layout.Row, out rowItem))
{
// 重新利用回收的行
rowItem = _recycledRows[0];
_recycledRows.RemoveAt(0);
rowItem.Row = layout.Row;
_rows.Add(layout.Row, rowItem);
updateAllCell = true;
}
rowItem.UpdateChildren(updateAllCell);
int z = rowItem.ContainsSpanCell ? _spanRowZIndexBase + rowItem.Row : _normalZIndexBase + rowItem.Row;
z = z % 0x7ffe;
Canvas.SetZIndex(rowItem, z);
rowItem.Location = new Point(x, y);
// 测量尺寸足够大，否则当单元格占多行时在uno上只绘一行！
rowItem.Measure(availableSize);
y += layout.Height;
maxWidth = Math.Max(maxWidth, rowItem.DesiredSize.Width);
}
// 测量回收的行
if (_recycledRows.Count > 0)
{
foreach (var rowItem in _recycledRows)
{
rowItem.Measure(_szEmpty);
}
}
return(new Size(maxWidth + Location.X, y));
}
