// Assumes that layoutInfo is up-to-date and that Node that is connected with
// columns is already processed and it's size and location calculated.
// layoutInfo.Top member reflects the next position below the node
// layoutInfo.LevelOffset should reflect the X offset for the child nodes.
public static int LayoutColumnHeader(NodeLayoutContextInfo layoutInfo,int x, int y, int clientWidth, int cellHorizontalSpacing)
{
Node node=layoutInfo.ContextNode;
int height=0;
foreach(ColumnHeader col in node.NodesColumns)
{
if(!col.Visible)
continue;
if(col.SizeChanged)
{
// Column for child nodes is always placed below the current node and
// is not included in the node's rectangle
Rectangle bounds=Rectangle.Empty;
bounds.X=x;
bounds.Y=y;
if(col.Width.Relative>0)
bounds.Width=(clientWidth*col.Width.Relative)/100-1;
else
bounds.Width=col.Width.Absolute;
if(col.StyleNormal=="" && col.StyleMouseDown=="" && col.StyleMouseOver=="")
{
bounds.Height=layoutInfo.DefaultHeaderSize.Height;
}
else
{
Size sz=Size.Empty;
if(col.StyleNormal!="")
{
ElementStyleLayout.CalculateStyleSize(layoutInfo.Styles[col.StyleNormal],layoutInfo.DefaultFont);
sz=layoutInfo.Styles[col.StyleNormal].Size;
}
if(sz.Height==0)
bounds.Height=layoutInfo.DefaultHeaderSize.Height;
else
bounds.Height=sz.Height;
}
col.SetBounds(bounds);
col.SizeChanged=false;
x+=(bounds.Width+cellHorizontalSpacing);
if(bounds.Height>height)
height=bounds.Height;
}
else if(col.Bounds.Height>height)
height=col.Bounds.Height;
}
return height;
}
private void ProcessNode(NodeLayoutContextInfo layoutInfo)
{
Node node=layoutInfo.ContextNode;
if(node.SizeChanged)
{
// Calculate size of the node itself...
LayoutNode(layoutInfo);
// Calculate size and location of node column header if any
// if(node.NodesColumnHeaderVisible)
// {
// layoutInfo.Left+=this.NodeLevelOffset;
// LayoutColumnHeader(layoutInfo);
// layoutInfo.Left-=this.NodeLevelOffset;
// }
}
else if(node.Bounds.Top!=layoutInfo.Top)
{
// Adjust top position
node.SetBounds(new Rectangle(node.Bounds.X,layoutInfo.Top,node.Bounds.Width,node.Bounds.Height));
foreach(Cell c in node.Cells)
c.SetBounds(new Rectangle(c.Bounds.X,layoutInfo.Top,c.Bounds.Width,c.Bounds.Height));
}
// Need to set the Top position properly
layoutInfo.Top+=(node.Bounds.Height+this.NodeVerticalSpacing);
// if(node.Expanded && node.NodesColumnHeaderVisible && node.NodesColumns.Count>0)
// layoutInfo.Top+=node.ColumnHeaderHeight;
if(node.Expanded)
{
int originalLevelOffset=layoutInfo.Left;
layoutInfo.Left+=this.NodeLevelOffset;
ArrayList parentColumns=layoutInfo.ChildColumns;
ArrayList childColumns=GetNodeColumnInfo(node);
foreach(Node childNode in node.Nodes)
{
layoutInfo.ContextNode=childNode;
layoutInfo.ChildColumns=childColumns;
ProcessNode(layoutInfo);
}
layoutInfo.ChildColumns=parentColumns;
layoutInfo.ContextNode=node;
layoutInfo.Left=originalLevelOffset;
}
}
private Size LayoutCellsHorizontal(NodeLayoutContextInfo layoutInfo, int x, int y)
{
Node node=layoutInfo.ContextNode;
int height=0, width=0;
for(int i=0;i<node.Cells.Count;i++)
{
Cell cell=node.Cells[i];
bool bCellVisible=true;
// Setup cell layout helper class
LayoutCellInfo cellLayout=this.GetLayoutCellInfo();
cellLayout.Top=y;
cellLayout.Left=x;
cellLayout.CellWidth=0;
cellLayout.ContextCell=cell;
cellLayout.Graphics=layoutInfo.Graphics;
cellLayout.LeftToRight=layoutInfo.LeftToRight;
cellLayout.Font=layoutInfo.DefaultFont;
if(cell.Layout!=eCellPartLayout.Default)
cellLayout.VerticalPartAlignment=(cell.Layout==eCellPartLayout.Vertical);
else if(layoutInfo.CellPartLayout!=eCellPartLayout.Default)
cellLayout.VerticalPartAlignment=(layoutInfo.CellPartLayout==eCellPartLayout.Vertical);
if(layoutInfo.DefaultColumns.Count>0 || layoutInfo.ChildColumns!=null && layoutInfo.ChildColumns.Count>0)
{
ColumnInfo ci=null;
if(layoutInfo.ChildColumns!=null && layoutInfo.ChildColumns.Count>0)
ci=layoutInfo.ChildColumns[i] as ColumnInfo;
else
ci=layoutInfo.DefaultColumns[i] as ColumnInfo;
bCellVisible=ci.Visible;
cellLayout.CellWidth=ci.Width;
}
// Prepare union style
if(cell.StyleNormal!=null)
cellLayout.LayoutStyle=cell.StyleNormal;
else
cellLayout.LayoutStyle=layoutInfo.DefaultCellStyle;
this.LayoutSingleCell(cellLayout);
if(bCellVisible)
{
x+=cell.Bounds.Width;
width+=cell.Bounds.Width;
if(cell.Bounds.Width>0)
{
x+=this.CellHorizontalSpacing;
width+=this.CellHorizontalSpacing;
}
if(cell.Bounds.Height>height)
height=cell.Bounds.Height;
}
}
// Take last added spacing off
x-=this.CellHorizontalSpacing;
width-=this.CellHorizontalSpacing;
return new Size(width,height);
}
private Size LayoutCellsVertical(NodeLayoutContextInfo layoutInfo, int x, int y)
{
Node node=layoutInfo.ContextNode;
int height=0, width=0;
eHorizontalAlign align=eHorizontalAlign.Center;
int iVisibleCells=0;
for(int i=0;i<node.Cells.Count;i++)
{
Cell cell=node.Cells[i];
bool bCellVisible=true;
// Setup cell layout helper class
LayoutCellInfo cellLayout=this.GetLayoutCellInfo();
cellLayout.Top=y;
cellLayout.Left=x;
cellLayout.CellWidth=0;
cellLayout.ContextCell=cell;
cellLayout.Graphics=layoutInfo.Graphics;
cellLayout.LeftToRight=layoutInfo.LeftToRight;
cellLayout.Font=layoutInfo.DefaultFont;
if(layoutInfo.DefaultColumns.Count>0 || layoutInfo.ChildColumns!=null && layoutInfo.ChildColumns.Count>0)
{
ColumnInfo ci=null;
if(layoutInfo.ChildColumns!=null && layoutInfo.ChildColumns.Count>0)
ci=layoutInfo.ChildColumns[i] as ColumnInfo;
else
ci=layoutInfo.DefaultColumns[i] as ColumnInfo;
bCellVisible=ci.Visible;
cellLayout.CellWidth=ci.Width;
}
// Prepare union style
if(cell.StyleNormal!=null)
cellLayout.LayoutStyle=cell.StyleNormal;
else
cellLayout.LayoutStyle=layoutInfo.DefaultCellStyle;
this.LayoutSingleCell(cellLayout);
cell.SetVisible(bCellVisible);
if(bCellVisible)
{
iVisibleCells++;
y+=cell.Bounds.Height;
height+=cell.Bounds.Height;
if(cell.Bounds.Height>0)
{
y+=this.CellVerticalSpacing;
height+=this.CellVerticalSpacing;
}
if(cell.Bounds.Width>width)
width=cell.Bounds.Width;
}
}
// Take last added spacing off
y-=this.CellVerticalSpacing;
height-=this.CellVerticalSpacing;
// Additional pass needed if horizontal alignment is other than left and there is more than one cell visible
if(align!=eHorizontalAlign.Left && iVisibleCells>1)
{
foreach(Cell cell in node.Cells)
{
if(!cell.IsVisible)
continue;
if(align==eHorizontalAlign.Center)
this.Offset(cell,(width-cell.Bounds.Width)/2,0);
else // Right aligned cells
this.Offset(cell,width-cell.Bounds.Width,0);
}
}
return new Size(width,height);
}
public Size LayoutCells(NodeLayoutContextInfo layoutInfo, int x, int y)
{
eCellLayout layout=layoutInfo.CellLayout;
if(layoutInfo.ContextNode.CellLayout!=layoutInfo.CellLayout && layoutInfo.ContextNode.CellLayout!=eCellLayout.Default)
layout=layoutInfo.ContextNode.CellLayout;
if(layout==eCellLayout.Horizontal || layout==eCellLayout.Default)
return this.LayoutCellsHorizontal(layoutInfo,x,y);
else
return this.LayoutCellsVertical(layoutInfo,x,y);
}
