DotNet 4.8.1 build of DotNetBar
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235
PROMS/DotNetBar Source Code/TreeGX/NodeTreeLayout.cs
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235
PROMS/DotNetBar Source Code/TreeGX/NodeTreeLayout.cs
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using System.Collections;
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using System.Drawing;
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using System.Windows.Forms;
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namespace DevComponents.Tree
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{
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/// <summary>
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/// Summary description for NodeTreeLayout.
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/// </summary>
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internal class NodeTreeLayout:NodeLayout
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{
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//private bool m_LayoutPerformed=false;
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public NodeTreeLayout(TreeGX treeControl, Rectangle clientArea):base(treeControl,clientArea)
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{
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//m_ExpandAreaWidth=16;
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m_ExpandPartSize=new Size(9,9);
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}
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public override void PerformLayout()
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{
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this.PrepareStyles();
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// Get default Columns
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ArrayList defaultColInfoList=this.GetDefaultColumnInfo();
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Graphics graphics=this.GetGraphics();
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try
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{
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// Loop through each top-level node
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Node[] topLevelNodes=this.GetTopLevelNodes();
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NodeLayoutContextInfo layoutInfo=GetDefaultNodeLayoutContextInfo(GetGraphics());
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foreach(Node childNode in topLevelNodes)
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{
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layoutInfo.ContextNode=childNode;
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ProcessNode(layoutInfo);
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}
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}
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finally
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{
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graphics.Dispose();
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}
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}
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#region Node routines
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private void ProcessNode(NodeLayoutContextInfo layoutInfo)
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{
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Node node=layoutInfo.ContextNode;
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if(node.SizeChanged)
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{
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// Calculate size of the node itself...
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LayoutNode(layoutInfo);
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// Calculate size and location of node column header if any
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// if(node.NodesColumnHeaderVisible)
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// {
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// layoutInfo.Left+=this.NodeLevelOffset;
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// LayoutColumnHeader(layoutInfo);
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// layoutInfo.Left-=this.NodeLevelOffset;
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// }
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}
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else if(node.Bounds.Top!=layoutInfo.Top)
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{
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// Adjust top position
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node.SetBounds(new Rectangle(node.Bounds.X,layoutInfo.Top,node.Bounds.Width,node.Bounds.Height));
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foreach(Cell c in node.Cells)
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c.SetBounds(new Rectangle(c.Bounds.X,layoutInfo.Top,c.Bounds.Width,c.Bounds.Height));
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}
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// Need to set the Top position properly
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layoutInfo.Top+=(node.Bounds.Height+this.NodeVerticalSpacing);
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// if(node.Expanded && node.NodesColumnHeaderVisible && node.NodesColumns.Count>0)
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// layoutInfo.Top+=node.ColumnHeaderHeight;
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if(node.Expanded)
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{
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int originalLevelOffset=layoutInfo.Left;
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layoutInfo.Left+=this.NodeLevelOffset;
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ArrayList parentColumns=layoutInfo.ChildColumns;
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ArrayList childColumns=GetNodeColumnInfo(node);
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foreach(Node childNode in node.Nodes)
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{
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layoutInfo.ContextNode=childNode;
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layoutInfo.ChildColumns=childColumns;
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ProcessNode(layoutInfo);
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}
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layoutInfo.ChildColumns=parentColumns;
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layoutInfo.ContextNode=node;
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layoutInfo.Left=originalLevelOffset;
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}
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}
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// private void LayoutNode(NodeLayoutContextInfo layoutInfo)
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// {
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// if(!layoutInfo.ContextNode.SizeChanged)
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// return;
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//
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// Node node=layoutInfo.ContextNode;
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// Rectangle nodeContentRect=Rectangle.Empty; // Node content rect excludes expand rect
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//
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// Rectangle nodeRect=Rectangle.Empty;
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// nodeRect.X=layoutInfo.Left;
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// nodeRect.Y=layoutInfo.Top;
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//
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// int height=0, width=0;
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//
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// bool bExpandPartAlignedNear=this.ExpandPartAlignedNear(node);
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// if(bExpandPartAlignedNear)
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// {
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// width+=(this.ExpandAreaWidth+this.GetCellLayout().CellPartSpacing);
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// }
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//
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// int x=width; // relative to 0,0 of the node
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// int y=0; // Relative to 0,0 of the node
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//
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// // Apply node style
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// ElementStyle nodeStyle=null;
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// if(node.Expanded && node.StyleExpanded!=null)
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// nodeStyle=node.StyleExpanded;
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// else if(node.Style!=null)
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// nodeStyle=node.Style;
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// else
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// nodeStyle=layoutInfo.DefaultNodeStyle;
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//
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// nodeContentRect.X=x;
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//
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// if(nodeStyle!=null)
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// {
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// x+=ElementStyleLayout.LeftWhiteSpace(nodeStyle); // nodeStyle.MarginLeft+nodeStyle.PaddingLeft;
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// y+=ElementStyleLayout.TopWhiteSpace(nodeStyle); // nodeStyle.MarginTop+nodeStyle.PaddingTop;
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// nodeContentRect.X+=nodeStyle.MarginLeft;
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// nodeContentRect.Y+=nodeStyle.MarginTop;
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// }
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//
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// Size size=this.GetCellLayout().LayoutCells(layoutInfo,x,y);
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// height=size.Height;
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// width+=size.Width;
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//
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// nodeContentRect.Width=size.Width;
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// nodeContentRect.Height=size.Height;
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//
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// node.SetCellsBounds(new Rectangle(x,y,size.Width,size.Height));
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//
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// if(nodeStyle!=null)
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// {
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// nodeContentRect.Width+=(ElementStyleLayout.StyleSpacing(nodeStyle,eSpacePart.Padding | eSpacePart.Border,eStyleSide.Left)+
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// ElementStyleLayout.StyleSpacing(nodeStyle,eSpacePart.Padding | eSpacePart.Border,eStyleSide.Right));
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// nodeContentRect.Height+=(ElementStyleLayout.StyleSpacing(nodeStyle,eSpacePart.Padding | eSpacePart.Border,eStyleSide.Top)+
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// ElementStyleLayout.StyleSpacing(nodeStyle,eSpacePart.Padding | eSpacePart.Border,eStyleSide.Bottom));
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//
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// width+=(ElementStyleLayout.HorizontalStyleWhiteSpace(nodeStyle));
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// height+=(ElementStyleLayout.VerticalStyleWhiteSpace(nodeStyle));
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// }
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//
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// if(!bExpandPartAlignedNear)
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// width+=this.ExpandAreaWidth;
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//
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// nodeRect.Height=height;
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// nodeRect.Width=width;
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//
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// node.SetBounds(nodeRect);
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// node.SetContentBounds(nodeContentRect);
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//
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// LayoutExpandPart(layoutInfo,true);
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//
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// node.SizeChanged=false;
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// }
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/// <summary>
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/// Returns true if expand part space should be accounted for even if they expand part is not visible or need to be displayed. Default value is false.
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/// </summary>
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protected override bool ReserveExpandPartSpace
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{
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get
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{
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return true;
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}
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}
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//
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// private CellLayout m_CellLayout=null;
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// private CellLayout GetCellLayout()
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// {
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// if(m_CellLayout==null)
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// m_CellLayout=new CellLayout();
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// return m_CellLayout;
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// }
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// /// <summary>
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// /// Determines the rectangle of the +/- part of the tree node that is used to expand node.
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// /// </summary>
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// /// <param name="layoutInfo">Node layout context information</param>
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// private void LayoutExpandPart(NodeLayoutContextInfo layoutInfo)
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// {
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// Node node=layoutInfo.ContextNode;
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//
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// Size partSize=new Size(9,9);
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//
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// // For different styles of the nodes the expand part +/- might be aligned to the right of the node etc.
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// // this routine does default left position
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// Rectangle bounds=new Rectangle(0,0,partSize.Width,partSize.Height);
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// bounds.Y=(node.Bounds.Height-bounds.Height)/2;
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// bounds.X=(this.ExpandAreaWidth-bounds.Width)/2;
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//
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// node.SetExpandPartRectangle(bounds);
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// }
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/// <summary>
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/// Gets whether the expand part of the node +/- is aligned to the left of the node in left-to-right layout.
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/// </summary>
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/// <param name="node">Node to get expand part alignment for</param>
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/// <returns>true if node expand part is aligned to the left in left-to-right layout.</returns>
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private bool ExpandPartAlignedNear(Node node)
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{
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return true; // If changed LayoutExpandPart needs to be updated as well
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}
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// private NodeCollection GetTopLevelNodes()
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// {
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// return m_Tree.Nodes;
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// }
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private int NodeLevelOffset
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{
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get {return 10;}
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}
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#endregion
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}
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}
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