CellRange ClipCellRange(CellRange source) { RowLayoutModel rowLayoutModel = OwnPanel.GetRowLayoutModel(); ColumnLayoutModel columnLayoutModel = GetColumnLayoutModel(); ICellsSupport dataContext = OwnPanel.GetDataContext(); int row = Math.Max(rowLayoutModel[0].Row, source.Row); int num2 = Math.Min(rowLayoutModel[rowLayoutModel.Count - 1].Row, (source.Row + source.RowCount) - 1); int column = Math.Max(columnLayoutModel[0].Column, source.Column); int num4 = Math.Min(columnLayoutModel[columnLayoutModel.Count - 1].Column, (source.Column + source.ColumnCount) - 1); for (int i = row; i <= num2; i++) { if (dataContext.Rows[i].ActualHeight > 0.0) { row = i; break; } } for (int j = column; j <= num4; j++) { if (dataContext.Columns[j].ActualWidth > 0.0) { column = j; break; } } return(new CellRange(row, column, (num2 - row) + 1, (num4 - column) + 1)); }
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)); }
protected override Size ArrangeOverride(Size finalSize) { RowLayoutModel rowLayoutModel = _owner.GetRowLayoutModel(); double y = 0.0; double rowWidth = 0.0; foreach (RowLayout layout in rowLayoutModel) { if (layout.Height <= 0.0) { continue; } if (_rows.TryGetValue(layout.Row, out var rowItem)) { // 一定按行的最大高度布局,否则当单元格占多行时在uno上只绘一行! rowItem.Arrange(new Rect(0.0, y, finalSize.Width, rowItem.DesiredSize.Height)); if (rowWidth == 0.0) { rowWidth = rowItem.RowWidth; } } y += layout.Height; } if (_recycledRows.Count > 0) { foreach (var rowItem in _recycledRows) { rowItem.Arrange(_rcEmpty); } } rowWidth = Math.Min(_owner.GetViewportSize().Width, rowWidth); Size size = new Size(rowWidth, y); Clip = new RectangleGeometry { Rect = new Rect(new Point(), size) }; return(size); }
protected override Size MeasureOverride(Size availableSize) { if (_owner.Excel.CanCellOverflow) { int viewportLeftColumn = _owner.Excel.GetViewportLeftColumn(_owner.ColumnViewportIndex); _owner.CellOverflowLayoutBuildEngine.ViewportLeftColumn = viewportLeftColumn; int viewportRightColumn = _owner.Excel.GetViewportRightColumn(_owner.ColumnViewportIndex); _owner.CellOverflowLayoutBuildEngine.ViewportRightColumn = viewportRightColumn; } // 频繁增删Children子元素会出现卡顿现象! // Children = _rows + _recycledRows RowLayoutModel rowLayoutModel = _owner.GetRowLayoutModel(); int less = rowLayoutModel.Count - Children.Count; if (less > 0) { for (int i = 0; i < less; i++) { RowItem rowItem = new RowItem(_owner); Children.Add(rowItem); _recycledRows.Add(rowItem); } } // 先回收不可见行 List <RowItem> 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; rowItem.CleanUpBeforeDiscard(); } } double y = _owner.Location.Y; double left = 0.0; foreach (RowLayout layout in rowLayoutModel) { if (layout.Height <= 0.0) { continue; } bool updateAllCell = false; RowItem 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.Location = new Point(_owner.Location.X, y); rowItem.UpdateChildren(updateAllCell); int z = rowItem.ContainsSpanCell ? _spanRowZIndexBase + rowItem.Row : _normalZIndexBase + rowItem.Row; z = z % 0x7ffe; Canvas.SetZIndex(rowItem, z); // 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; left = Math.Max(left, rowItem.DesiredSize.Width); } // 测量回收的行 if (_recycledRows.Count > 0) { foreach (var rowItem in _recycledRows) { rowItem.Measure(_szEmpty); } } return(new Size(left + _owner.Location.X, y)); }
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))); }
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))); }
void BuildSelection() { _cachedSelectionLayout.Clear(); _cachedFocusCellLayout = _rcEmpty; _cachedSelectionFrameLayout = _rcEmpty; _cachedActiveSelectionLayout = _rcEmpty; _cachedActiveSelection = null; _activeRow = Excel.ActiveSheet.ActiveRowIndex; _activeCol = Excel.ActiveSheet.ActiveColumnIndex; _selectionLayer.IsAnchorCellInSelection = false; var indicator = _selectionLayer.FocusIndicator; RowLayoutModel rowLayoutModel = GetRowLayoutModel(); ColumnLayoutModel colLayoutModel = Excel.GetViewportColumnLayoutModel(ColumnViewportIndex); if (rowLayoutModel == null || rowLayoutModel.Count == 0 || colLayoutModel == null || colLayoutModel.Count == 0) { indicator.HideAll(); return; } CellRange activeCellRange = GetActiveCellRange(); List <CellRange> ranges = new List <CellRange>((IEnumerable <CellRange>)Excel.ActiveSheet.Selections); if (ranges.Count == 0) { ranges.Add(activeCellRange); } int rangeCount = ranges.Count; Size viewportSize = GetViewportSize(); Rect rectViewport = new Rect(0.0, 0.0, viewportSize.Width, viewportSize.Height); int topRow = rowLayoutModel[0].Row; int bottomRow = rowLayoutModel[rowLayoutModel.Count - 1].Row; int leftCol = colLayoutModel[0].Column; int rightCol = colLayoutModel[colLayoutModel.Count - 1].Column; for (int i = 0; i < rangeCount; i++) { CellRange range = ranges[i]; if (range.Contains(_activeRow, _activeCol)) { _selectionLayer.IsAnchorCellInSelection = true; } int num7 = (range.Row < 0) ? 0 : range.Row; int num8 = (range.Column < 0) ? 0 : range.Column; int rowCount = (range.RowCount < 0) ? Excel.ActiveSheet.RowCount : range.RowCount; int columnCount = (range.ColumnCount < 0) ? Excel.ActiveSheet.ColumnCount : range.ColumnCount; range = new CellRange(num7, num8, rowCount, columnCount); Rect rect2 = GetRangeBounds(range); rect2.Intersect(rectViewport); if (rect2.IsEmpty) { continue; } _cachedSelectionLayout.Add(new Rect(rect2.Left + 1.0, rect2.Top + 1.0, Math.Max((double)0.0, (double)(rect2.Width - 3.0)), Math.Max((double)0.0, (double)(rect2.Height - 3.0)))); if (range.Contains(activeCellRange)) { Rect rect3 = new Rect(rect2.Left + 1.0, rect2.Top + 1.0, Math.Max((double)0.0, (double)(rect2.Width - 3.0)), Math.Max((double)0.0, (double)(rect2.Height - 3.0))); if (_cachedActiveSelectionLayout.IsEmpty || (rangeCount == 1)) { _cachedActiveSelectionLayout = rect3; _cachedActiveSelection = range; } else { Rect rect4 = new Rect(rect3.Left, rect3.Top, rect3.Width, rect3.Height); rect4.Intersect(_cachedActiveSelectionLayout); if (rect4.IsEmpty) { _cachedActiveSelectionLayout = rect3; _cachedActiveSelection = range; } else if (ContainsRect(rect3, _cachedActiveSelectionLayout)) { _cachedActiveSelectionLayout = rect3; _cachedActiveSelection = range; } } } } Rect rangeBounds = GetRangeBounds(activeCellRange); if (!rangeBounds.IsEmpty) { rangeBounds = new Rect(rangeBounds.Left + 1.0, rangeBounds.Top + 1.0, Math.Max((double)0.0, (double)(rangeBounds.Width - 3.0)), Math.Max((double)0.0, (double)(rangeBounds.Height - 3.0))); } _cachedFocusCellLayout = rangeBounds; // 只一个选择区域 if (rangeCount == 1) { CellRange range = ranges[0]; if (!_selectionLayer.IsAnchorCellInSelection) { range = activeCellRange; } Rect bounds = GetRangeBounds(range); bounds.Intersect(rectViewport); if (bounds.IsEmpty) { indicator.HideAll(); return; } if ((range.Row == -1) && (range.Column == -1)) { // 全选 indicator.Thickness = 1.0; _cachedSelectionFrameLayout = bounds; } else if (!_selectionLayer.IsAnchorCellInSelection) { indicator.Thickness = 1.0; _cachedSelectionFrameLayout = new Rect(bounds.Left, bounds.Top, bounds.Width, bounds.Height); } else { indicator.Thickness = 3.0; _cachedSelectionFrameLayout = new Rect(bounds.Left - 2.0, bounds.Top - 2.0, bounds.Width + 3.0, bounds.Height + 3.0); } if (!Excel.IsDraggingFill && range.Intersects(topRow, leftCol, rowLayoutModel.Count, colLayoutModel.Count)) { if (range.Row == -1) { indicator.IsTopVisible = topRow == 0; indicator.IsBottomVisible = bottomRow == (Excel.ActiveSheet.RowCount - 1); } else { indicator.IsTopVisible = (range.Row >= topRow) && (range.Row <= bottomRow); int num11 = (range.Row + range.RowCount) - 1; indicator.IsBottomVisible = (num11 >= topRow) && (num11 <= bottomRow); } if (range.Column == -1) { indicator.IsLeftVisible = leftCol == 0; indicator.IsRightVisible = rightCol == (Excel.ActiveSheet.ColumnCount - 1); } else { indicator.IsLeftVisible = (range.Column >= leftCol) && (range.Column <= rightCol); int num12 = (range.Column + range.ColumnCount) - 1; indicator.IsRightVisible = (num12 >= leftCol) && (num12 <= rightCol); } } else { indicator.IsTopVisible = false; indicator.IsBottomVisible = false; indicator.IsLeftVisible = false; indicator.IsRightVisible = false; } if (Excel.CanUserDragFill) { if (!Excel.IsDraggingFill) { if (((bounds.Width == 0.0) || (bounds.Height == 0.0)) || (indicator.Thickness == 1.0)) { indicator.IsFillIndicatorVisible = false; } else if ((range.Row != -1) && (range.Column != -1)) { bool flag = indicator.IsRightVisible && indicator.IsBottomVisible; if (Excel.InputDeviceType == InputDeviceType.Touch) { flag = false; } indicator.IsFillIndicatorVisible = flag; if (flag) { indicator.FillIndicatorPosition = FillIndicatorPosition.BottomRight; } } else if ((range.Row != -1) && (range.Column == -1)) { ViewportInfo viewportInfo = Excel.GetViewportInfo(); bool flag2; if (Excel.ActiveSheet.FrozenColumnCount == 0) { flag2 = (ColumnViewportIndex >= 0) && (ColumnViewportIndex < viewportInfo.ColumnViewportCount); } else { flag2 = (ColumnViewportIndex == -1) || ((ColumnViewportIndex >= 1) && (ColumnViewportIndex < viewportInfo.ColumnViewportCount)); } flag2 = flag2 && indicator.IsBottomVisible; if (Excel.InputDeviceType == InputDeviceType.Touch) { flag2 = false; } indicator.IsFillIndicatorVisible = flag2; if (flag2) { indicator.FillIndicatorPosition = FillIndicatorPosition.BottomLeft; } } else if ((range.Column != -1) && (range.Row == -1)) { ViewportInfo info2 = Excel.GetViewportInfo(); bool flag3; if (Excel.ActiveSheet.FrozenRowCount == 0) { flag3 = (RowViewportIndex >= 0) && (RowViewportIndex < info2.RowViewportCount); } else { flag3 = (RowViewportIndex == -1) || ((RowViewportIndex >= 1) && (RowViewportIndex < info2.RowViewportCount)); } flag3 = flag3 && indicator.IsRightVisible; if (Excel.InputDeviceType == InputDeviceType.Touch) { flag3 = false; } indicator.IsFillIndicatorVisible = flag3; if (flag3) { indicator.FillIndicatorPosition = FillIndicatorPosition.TopRight; } } else { indicator.IsFillIndicatorVisible = false; } } } else { indicator.IsFillIndicatorVisible = false; } return; } // 多个选择区域 Rect rect7 = GetRangeBounds(activeCellRange); if (!rect7.IsEmpty) { indicator.Thickness = 1.0; _cachedSelectionFrameLayout = rect7; _cachedSelectionFrameLayout.Width = Math.Max((double)0.0, (double)(_cachedSelectionFrameLayout.Width - 1.0)); _cachedSelectionFrameLayout.Height = Math.Max((double)0.0, (double)(_cachedSelectionFrameLayout.Height - 1.0)); int num13 = 0; int num14 = 0; int num15 = 0; int num16 = 0; for (int j = 0; j < rangeCount; j++) { CellRange range4 = ranges[j]; if (range4 != null) { if (activeCellRange.Row == range4.Row) { num14 = 1; } if (activeCellRange.Column == range4.Column) { num13 = 1; } if (activeCellRange.Row == ((range4.Row + range4.RowCount) - 1)) { num16 = 1; } if (activeCellRange.Column == ((range4.Column + range4.ColumnCount) - 1)) { num15 = 1; } } } _cachedSelectionFrameLayout.Y += num14; _cachedSelectionFrameLayout.Height = Math.Max((double)0.0, (double)(_cachedSelectionFrameLayout.Height - (num14 + num16))); _cachedSelectionFrameLayout.X += num13; _cachedSelectionFrameLayout.Width = Math.Max((double)0.0, (double)(_cachedSelectionFrameLayout.Width - (num13 + num15))); } indicator.IsBottomVisible = true; indicator.IsTopVisible = true; indicator.IsLeftVisible = true; indicator.IsRightVisible = true; indicator.IsFillIndicatorVisible = false; }
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))); } } } }
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)); }