358 lines
15 KiB
C#
358 lines
15 KiB
C#
#region MigraDoc - Creating Documents on the Fly
|
|
//
|
|
// Authors:
|
|
// Stefan Lange
|
|
// Klaus Potzesny
|
|
// David Stephensen
|
|
//
|
|
// Copyright (c) 2001-2017 empira Software GmbH, Cologne Area (Germany)
|
|
//
|
|
// http://www.pdfsharp.com
|
|
// http://www.migradoc.com
|
|
// http://sourceforge.net/projects/pdfsharp
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the "Software"),
|
|
// to deal in the Software without restriction, including without limitation
|
|
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
// and/or sell copies of the Software, and to permit persons to whom the
|
|
// Software is furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using MigraDoc.DocumentObjectModel.Tables;
|
|
using MigraDoc.DocumentObjectModel.publics;
|
|
|
|
namespace MigraDoc.DocumentObjectModel.Visitors
|
|
{
|
|
/// <summary>
|
|
/// Represents a merged list of cells of a table.
|
|
/// </summary>
|
|
public class MergedCellList : List<Cell>
|
|
{
|
|
/// <summary>
|
|
/// Enumeration of neighbor positions of cells in a table.
|
|
/// </summary>
|
|
enum NeighborPosition
|
|
{
|
|
Top,
|
|
Left,
|
|
Right,
|
|
Bottom
|
|
}
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the MergedCellList class.
|
|
/// </summary>
|
|
public MergedCellList(Table table)
|
|
{
|
|
Init(table);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Initializes this instance from a table.
|
|
/// </summary>
|
|
private void Init(Table table)
|
|
{
|
|
for (int rwIdx = 0; rwIdx < table.Rows.Count; ++rwIdx)
|
|
{
|
|
for (int clmIdx = 0; clmIdx < table.Columns.Count; ++clmIdx)
|
|
{
|
|
Cell cell = table[rwIdx, clmIdx];
|
|
if (!IsAlreadyCovered(cell))
|
|
Add(cell);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns whether the given cell is already covered by a preceding cell in this instance.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Help function for Init().
|
|
/// </remarks>
|
|
private bool IsAlreadyCovered(Cell cell)
|
|
{
|
|
for (int index = Count - 1; index >= 0; --index)
|
|
{
|
|
|
|
Cell currentCell = this[index];
|
|
if (currentCell.Column.Index <= cell.Column.Index && currentCell.Column.Index + currentCell.MergeRight >= cell.Column.Index)
|
|
{
|
|
if (currentCell.Row.Index <= cell.Row.Index && currentCell.Row.Index + currentCell.MergeDown >= cell.Row.Index)
|
|
return true;
|
|
|
|
if (currentCell.Row.Index + currentCell.MergeDown == cell.Row.Index - 1)
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the cell at the specified position.
|
|
/// </summary>
|
|
public new Cell this[int index]
|
|
{
|
|
get { return base[index]; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a borders object that should be used for rendering.
|
|
/// </summary>
|
|
/// <exception cref="System.ArgumentException">
|
|
/// Thrown when the cell is not in this list.
|
|
/// This situation occurs if the given cell is merged "away" by a previous one.
|
|
/// </exception>
|
|
public Borders GetEffectiveBorders(Cell cell)
|
|
{
|
|
//Borders borders = cell.GetValue("Borders", GV.ReadOnly) as Borders;
|
|
Borders borders = cell._borders;
|
|
if (borders != null)
|
|
{
|
|
//Document doc = borders.Document;
|
|
borders = borders.Clone();
|
|
borders._parent = cell;
|
|
//doc = borders.Document;
|
|
}
|
|
else
|
|
borders = new Borders(cell._parent);
|
|
|
|
int cellIdx = BinarySearch(cell, new CellComparer());
|
|
if (!(cellIdx >= 0 && cellIdx < Count))
|
|
throw new ArgumentException("cell is not a relevant cell", "cell");
|
|
|
|
if (cell._mergeRight > 0)
|
|
{
|
|
Cell rightBorderCell = cell.Table[cell.Row.Index, cell.Column.Index + cell._mergeRight];
|
|
if (rightBorderCell._borders != null && rightBorderCell._borders._right != null)
|
|
borders.Right = rightBorderCell._borders._right.Clone();
|
|
else
|
|
borders._right = null;
|
|
}
|
|
|
|
if (cell._mergeDown > 0)
|
|
{
|
|
Cell bottomBorderCell = cell.Table[cell.Row.Index + cell._mergeDown, cell.Column.Index];
|
|
if (bottomBorderCell._borders != null && bottomBorderCell._borders._bottom != null)
|
|
borders.Bottom = bottomBorderCell._borders._bottom.Clone();
|
|
else
|
|
borders._bottom = null;
|
|
}
|
|
|
|
// For BorderTypes Top, Right, Bottom and Left update the width with the neighbours touching border where required.
|
|
// In case of rounded corners this should not be done.
|
|
|
|
Cell leftNeighbor = GetNeighbor(cellIdx, NeighborPosition.Left);
|
|
if (leftNeighbor != null && leftNeighbor.RoundedCorner != RoundedCorner.TopRight && leftNeighbor.RoundedCorner != RoundedCorner.BottomRight)
|
|
{
|
|
Borders nbrBrdrs = leftNeighbor.GetValue("Borders", GV.ReadWrite) as Borders;
|
|
if (nbrBrdrs != null && GetEffectiveBorderWidth(nbrBrdrs, BorderType.Right) >= GetEffectiveBorderWidth(borders, BorderType.Left))
|
|
borders.SetValue("Left", GetBorderFromBorders(nbrBrdrs, BorderType.Right));
|
|
}
|
|
|
|
Cell rightNeighbor = GetNeighbor(cellIdx, NeighborPosition.Right);
|
|
if (rightNeighbor != null && rightNeighbor.RoundedCorner != RoundedCorner.TopLeft && rightNeighbor.RoundedCorner != RoundedCorner.BottomLeft)
|
|
{
|
|
Borders nbrBrdrs = rightNeighbor.GetValue("Borders", GV.ReadWrite) as Borders;
|
|
if (nbrBrdrs != null && GetEffectiveBorderWidth(nbrBrdrs, BorderType.Left) > GetEffectiveBorderWidth(borders, BorderType.Right))
|
|
borders.SetValue("Right", GetBorderFromBorders(nbrBrdrs, BorderType.Left));
|
|
}
|
|
|
|
Cell topNeighbor = GetNeighbor(cellIdx, NeighborPosition.Top);
|
|
if (topNeighbor != null && topNeighbor.RoundedCorner != RoundedCorner.BottomLeft && topNeighbor.RoundedCorner != RoundedCorner.BottomRight)
|
|
{
|
|
Borders nbrBrdrs = topNeighbor.GetValue("Borders", GV.ReadWrite) as Borders;
|
|
if (nbrBrdrs != null && GetEffectiveBorderWidth(nbrBrdrs, BorderType.Bottom) >= GetEffectiveBorderWidth(borders, BorderType.Top))
|
|
borders.SetValue("Top", GetBorderFromBorders(nbrBrdrs, BorderType.Bottom));
|
|
}
|
|
|
|
Cell bottomNeighbor = GetNeighbor(cellIdx, NeighborPosition.Bottom);
|
|
if (bottomNeighbor != null && bottomNeighbor.RoundedCorner != RoundedCorner.TopLeft && bottomNeighbor.RoundedCorner != RoundedCorner.TopRight)
|
|
{
|
|
Borders nbrBrdrs = bottomNeighbor.GetValue("Borders", GV.ReadWrite) as Borders;
|
|
if (nbrBrdrs != null && GetEffectiveBorderWidth(nbrBrdrs, BorderType.Top) > GetEffectiveBorderWidth(borders, BorderType.Bottom))
|
|
borders.SetValue("Bottom", GetBorderFromBorders(nbrBrdrs, BorderType.Top));
|
|
}
|
|
return borders;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the cell that covers the given cell by merging. Usually the cell itself if not merged.
|
|
/// </summary>
|
|
public Cell GetCoveringCell(Cell cell)
|
|
{
|
|
int cellIdx = BinarySearch(cell, new CellComparer());
|
|
if (cellIdx >= 0 && cellIdx < Count)
|
|
return this[cellIdx];
|
|
|
|
// Binary Search returns the complement of the next value, therefore, "~cellIdx - 1" is the previous cell.
|
|
cellIdx = ~cellIdx - 1;
|
|
|
|
for (int index = cellIdx; index >= 0; --index)
|
|
{
|
|
Cell currCell = this[index];
|
|
if (currCell.Column.Index <= cell.Column.Index &&
|
|
currCell.Column.Index + currCell.MergeRight >= cell.Column.Index &&
|
|
currCell.Row.Index <= cell.Row.Index &&
|
|
currCell.Row.Index + currCell.MergeDown >= cell.Row.Index)
|
|
return currCell;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the border of the given borders-object of the specified type (top, bottom, ...).
|
|
/// If that border doesn't exist, it returns a new border object that inherits all properties from the given borders object
|
|
/// </summary>
|
|
private static Border GetBorderFromBorders(Borders borders, BorderType type)
|
|
{
|
|
Border returnBorder = borders.GetBorderReadOnly(type);
|
|
if (returnBorder == null)
|
|
{
|
|
returnBorder = new Border();
|
|
returnBorder._style = borders._style;
|
|
returnBorder._width = borders._width;
|
|
returnBorder._color = borders._color;
|
|
returnBorder._visible = borders._visible;
|
|
}
|
|
return returnBorder;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the width of the border at the specified position.
|
|
/// </summary>
|
|
private static Unit GetEffectiveBorderWidth(Borders borders, BorderType type)
|
|
{
|
|
if (borders == null)
|
|
return 0;
|
|
|
|
Border border = borders.GetBorderReadOnly(type);
|
|
|
|
DocumentObject relevantDocObj = border;
|
|
if (relevantDocObj == null || relevantDocObj.IsNull("Width"))
|
|
relevantDocObj = borders;
|
|
|
|
// Avoid unnecessary GetValue calls.
|
|
object visible = relevantDocObj.GetValue("visible", GV.GetNull);
|
|
if (visible != null && !(bool)visible)
|
|
return 0;
|
|
|
|
object width = relevantDocObj.GetValue("width", GV.GetNull);
|
|
if (width != null)
|
|
return (Unit)width;
|
|
|
|
object color = relevantDocObj.GetValue("color", GV.GetNull);
|
|
if (color != null)
|
|
return 0.5;
|
|
|
|
object style = relevantDocObj.GetValue("style", GV.GetNull);
|
|
if (style != null)
|
|
return 0.5;
|
|
return 0;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the specified cell's uppermost neighbor at the specified position.
|
|
/// </summary>
|
|
private Cell GetNeighbor(int cellIdx, NeighborPosition position)
|
|
{
|
|
Cell cell = this[cellIdx];
|
|
if (cell.Column.Index == 0 && position == NeighborPosition.Left ||
|
|
cell.Row.Index == 0 && position == NeighborPosition.Top ||
|
|
cell.Row.Index + cell.MergeDown == cell.Table.Rows.Count - 1 && position == NeighborPosition.Bottom ||
|
|
cell.Column.Index + cell.MergeRight == cell.Table.Columns.Count - 1 && position == NeighborPosition.Right)
|
|
return null;
|
|
|
|
switch (position)
|
|
{
|
|
case NeighborPosition.Top:
|
|
case NeighborPosition.Left:
|
|
for (int index = cellIdx - 1; index >= 0; --index)
|
|
{
|
|
Cell currCell = this[index];
|
|
if (IsNeighbor(cell, currCell, position))
|
|
return currCell;
|
|
}
|
|
break;
|
|
|
|
case NeighborPosition.Right:
|
|
if (cellIdx + 1 < Count)
|
|
{
|
|
Cell cell2 = this[cellIdx + 1];
|
|
if (cell2.Row.Index == cell.Row.Index)
|
|
return cell2;
|
|
}
|
|
for (int index = cellIdx - 1; index >= 0; --index)
|
|
{
|
|
Cell currCell = this[index];
|
|
if (IsNeighbor(cell, currCell, position))
|
|
return currCell;
|
|
}
|
|
break;
|
|
|
|
case NeighborPosition.Bottom:
|
|
for (int index = cellIdx + 1; index < Count; ++index)
|
|
{
|
|
Cell currCell = this[index];
|
|
if (IsNeighbor(cell, currCell, position))
|
|
return currCell;
|
|
}
|
|
break;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns whether cell2 is a neighbor of cell1 at the specified position.
|
|
/// </summary>
|
|
private bool IsNeighbor(Cell cell1, Cell cell2, NeighborPosition position)
|
|
{
|
|
bool isNeighbor = false;
|
|
switch (position)
|
|
{
|
|
case NeighborPosition.Bottom:
|
|
int bottomRowIdx = cell1.Row.Index + cell1.MergeDown + 1;
|
|
isNeighbor = cell2.Row.Index == bottomRowIdx &&
|
|
cell2.Column.Index <= cell1.Column.Index &&
|
|
cell2.Column.Index + cell2.MergeRight >= cell1.Column.Index;
|
|
break;
|
|
|
|
case NeighborPosition.Left:
|
|
int leftClmIdx = cell1.Column.Index - 1;
|
|
isNeighbor = cell2.Row.Index <= cell1.Row.Index &&
|
|
cell2.Row.Index + cell2.MergeDown >= cell1.Row.Index &&
|
|
cell2.Column.Index + cell2.MergeRight == leftClmIdx;
|
|
break;
|
|
|
|
case NeighborPosition.Right:
|
|
int rightClmIdx = cell1.Column.Index + cell1.MergeRight + 1;
|
|
isNeighbor = cell2.Row.Index <= cell1.Row.Index &&
|
|
cell2.Row.Index + cell2.MergeDown >= cell1.Row.Index &&
|
|
cell2.Column.Index == rightClmIdx;
|
|
break;
|
|
|
|
case NeighborPosition.Top:
|
|
int topRowIdx = cell1.Row.Index - 1;
|
|
isNeighbor = cell2.Row.Index + cell2.MergeDown == topRowIdx &&
|
|
cell2.Column.Index + cell2.MergeRight >= cell1.Column.Index &&
|
|
cell2.Column.Index <= cell1.Column.Index;
|
|
break;
|
|
}
|
|
return isNeighbor;
|
|
}
|
|
}
|
|
}
|