/// <summary>
/// Calc the drawing area height of the node specified
/// </summary>
/// <param name="oNode"></param>
/// <returns></returns>
private int CalcItemHeight(Node oNode, Graphics oGraphics)
{
int nHeight = oNode.GetHeight(oGraphics) + this.Style.NodeSpaceVertical;
if (oNode.IsExpanded == false)
return nHeight;
if (oNode.Nodes.Count == 0)
return nHeight;
foreach (Node oSubNode in oNode.Nodes)
nHeight += CalcItemHeight(oSubNode, oGraphics);
return nHeight;
}
/// <summary>
/// Paint the node in the closed mode
/// </summary>
/// <param name="oNode"></param>
/// <param name="nX"></param>
/// <param name="nY"></param>
/// <param name="oGraphics"></param>
internal void PaintNode(Node oNode, Graphics oGraphics, ref int nX, ref int nY, int nWidth,
ref Hashtable m_mapSubItemToRect, ref Hashtable m_mapRectToSubItem, ref Hashtable m_mapRectToItemBox,
ref Hashtable m_mapItemBoxToRect, ref Hashtable m_mapRectToItemCheck, ref Hashtable m_mapItemCheckToRect,
ref Hashtable m_mapRectToItemFlag, ref Hashtable m_mapItemFlagToRect)
{
if (oNode == null)
return;
oNode._TreeView = m_oTreeView;
if (oNode.NodeStyle != null)
{
oNode.NodeStyle.TreeView = this.m_oTreeView;
oNode.NodeStyle.CheckBoxStyle.TreeView = this.m_oTreeView;
oNode.NodeStyle.ExpandBoxStyle.TreeView = this.m_oTreeView;
}
Width = nWidth;
if (oNode.IsExpanded == true)
{
PaintNodeExpanded(oNode, oGraphics, ref nX, ref nY, Width, ref m_mapSubItemToRect, ref m_mapRectToSubItem,
ref m_mapRectToItemBox, ref m_mapItemBoxToRect, ref m_mapRectToItemCheck, ref m_mapItemCheckToRect,
ref m_mapRectToItemFlag, ref m_mapItemFlagToRect);
return;
}
int nXAdd = 0;
//if (oNode.GetShowPlusMinus() == false)
// nXAdd = 15;
if (oNode.GetCheckBoxes() == true && oNode.CheckBoxVisible == true)
nXAdd -= 18;
int nodeSpace = 0;
if (oNode.IndentLevel != 0)
nodeSpace = m_oTreeView.Style.NodeSpaceHorizontal;
int height = oNode.GetHeight(oGraphics);
Rectangle oNodeRect = new Rectangle(nX - nXAdd + nodeSpace, nY,
Width - nX - 5 + nXAdd - nodeSpace, height);
if (m_oTreeView.Style.FullRowSelect == false && oNode.Panel == null)
{
oNodeRect = new Rectangle(nX - nXAdd + nodeSpace, nY,
oNode.GetWidth(oGraphics), height);
}
oNode.NodeOrder = m_nNodeOrder;
m_nNodeOrder ++;
// get the order of the actual group. calculate the bottom nY of the group, if the current nY is bigger than
// this calculated nY, then skip the drawing and donot draw the object
int nMaxY = oNode.TreeView.Height;
int nGroupY = -height;
// render the background
if (oNode.BackgroundStyle != null && oNode.BackgroundStyle.Visible == true)
{
int width = oNode.GetTreeView().Width - oNodeRect.Left - nXAdd
- m_oTreeView.GetScrollBarWidth() - oNode.IndentLevel - 4;
AreaPainter.PaintRectangle(oGraphics, oNodeRect.Left + 1 + nXAdd, oNodeRect.Top - 1,
width, oNode.GetFullHeight(oGraphics) - 1,
oNode.BackgroundStyle.FillStyle,
oNode.BackgroundStyle.BackColor, oNode.BackgroundStyle.FadeColor,
BorderStyle.None, Color.White);
}
if (nY > nGroupY && nY < nMaxY)
{
// draw flag
PaintNodeFlag(oNode, oGraphics, oNodeRect, ref m_mapRectToItemFlag, ref m_mapItemFlagToRect);
// render selected background
PaintNodeBackground(oNode, oGraphics, oNodeRect);
// draw design selection
PaintNodeBackgroundDesignSelection(oNode, oGraphics, oNodeRect);
// draw expand/collapse boxes
if (oNode.GetShowPlusMinus() == true)
PaintExpandBox(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemBox, ref m_mapItemBoxToRect);
// draw lines between nodes
PaintNodeLines(oNode, oGraphics, nX + nodeSpace, nY, m_mapItemBoxToRect, m_mapSubItemToRect);
// draw item header and the subitems indicator
PaintNodeText(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemCheck, ref m_mapItemCheckToRect);
// check the design time highlight
if (oNode.DesignHighlighted)
{
if (oNode.GetCheckBoxes() == false)
{
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left + 2, oNodeRect.Top - 1,
Width - oNodeRect.Left - 7 - m_oTreeView.GetScrollBarWidth(), oNodeRect.Height - 2);
}
else
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left + 2, oNodeRect.Top - 1,
(int)oNodeRect.Width, oNodeRect.Height - 2);
}
}
else
{
if (oNode.CheckBoxVisible == true)
{
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left, oNodeRect.Top - 1,
Width - oNodeRect.Left - 7 - m_oTreeView.GetScrollBarWidth() + 2, oNodeRect.Height - 2);
}
else
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left, oNodeRect.Top - 1,
(int)oNodeRect.Width, oNodeRect.Height - 2);
}
}
}
}
// create the item rect and add it to maps
try{m_mapSubItemToRect.Add(oNode, oNodeRect);}catch{}
try{m_mapRectToSubItem.Add(oNodeRect, oNode);}catch{}
oNode.Top = oNodeRect.Top + oNodeRect.Height;
oNode.Left = oNodeRect.Left;
oNode.Width = oNodeRect.Width - m_oTreeView.GetScrollBarWidth();
}
// for the nodes being drawn before the visible area, but still needed for the
// lines painting
if (nY <= nGroupY)
{
// draw expand/collapse boxes
PaintExpandBox(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemBox, ref m_mapItemBoxToRect);
}
// for the nodes being at the position under the drawing visible area, draw the lines
// so it is visible that there are some other child nodes even they are not visible
if (nY >= nMaxY)
{
// draw expand/collapse boxes
PaintExpandBox(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemBox, ref m_mapItemBoxToRect);
// draw lines between nodes
PaintNodeLines(oNode, oGraphics, nX + nodeSpace, nY, m_mapItemBoxToRect, m_mapSubItemToRect);
}
nY += height;
nY += m_oTreeView.Style.NodeSpaceVertical;
}
/// <summary>
/// Paint the node in the expanded mode
/// </summary>
/// <param name="oNode"></param>
/// <param name="nX"></param>
/// <param name="nY"></param>
/// <param name="oGraphics"></param>
private void PaintNodeExpanded(Node oNode, Graphics oGraphics, ref int nX, ref int nY, int Width,
ref Hashtable m_mapSubItemToRect, ref Hashtable m_mapRectToSubItem, ref Hashtable m_mapRectToItemBox,
ref Hashtable m_mapItemBoxToRect, ref Hashtable m_mapRectToItemCheck, ref Hashtable m_mapItemCheckToRect,
ref Hashtable m_mapRectToItemFlag, ref Hashtable m_mapItemFlagToRect)
{
int nXAdd = 0;
//if (oNode.GetShowPlusMinus() == false)
// nXAdd = 15;
if (oNode.GetCheckBoxes() == true && oNode.CheckBoxVisible == true)
nXAdd -= 18;
int nodeSpace = 0;
if (oNode.IndentLevel != 0)
nodeSpace = m_oTreeView.Style.NodeSpaceHorizontal;
int height = oNode.GetHeight(oGraphics);
Rectangle oNodeRect = new Rectangle(nX - nXAdd +nodeSpace, nY,
Width - nX - 5 + nXAdd - nodeSpace, height);
if (m_oTreeView.Style.FullRowSelect == false && oNode.Panel == null)
{
oNodeRect = new Rectangle(nX - nXAdd + nodeSpace, nY,
oNode.GetWidth(oGraphics), height);
}
// render the background
if (oNode.BackgroundStyle != null && oNode.BackgroundStyle.Visible == true)
{
int width = oNode.GetTreeView().Width - oNodeRect.Left - nXAdd
- m_oTreeView.GetScrollBarWidth() - oNode.IndentLevel - 4;
AreaPainter.PaintRectangle(oGraphics, oNodeRect.Left + 1 + nXAdd, oNodeRect.Top - 1,
width, oNode.GetFullHeight(oGraphics) - 1,
oNode.BackgroundStyle.FillStyle,
oNode.BackgroundStyle.BackColor, oNode.BackgroundStyle.FadeColor,
BorderStyle.None, Color.White);
}
oNode.NodeOrder = m_nNodeOrder;
m_nNodeOrder ++;
// get the order of the actual group. calculate the bottom nY of the group, if the current nY is bigger than
// this calculated nY, then skip the drawing and donot draw the object
int nMaxY = oNode.TreeView.Height;
int nGroupY = -height;
// create the item rect and add it to maps
try {m_mapSubItemToRect.Add(oNode, oNodeRect);} catch{}
try {m_mapRectToSubItem.Add(oNodeRect, oNode);} catch{}
oNode.Top = oNodeRect.Top + oNodeRect.Height + 1;
oNode.Left = oNodeRect.Left;
oNode.Width = oNodeRect.Width - m_oTreeView.GetScrollBarWidth();
SizeF oTextSize = oGraphics.MeasureString(oNode.GetText(), oNode.GetFont(), oNode.GetTreeView().GetDrawWidth() - nX - 8);
if (m_oTreeView.Multiline == false)
oTextSize = oGraphics.MeasureString(oNode.GetText(), oNode.GetFont());
oNode.Top = nY + (int)oTextSize.Height + 2;
if ((nY >= nGroupY && nY < nMaxY) || oNode.TreeView.IsDesignMode == true)
{
// draw flag
PaintNodeFlag(oNode, oGraphics, oNodeRect, ref m_mapRectToItemFlag, ref m_mapItemFlagToRect);
// draw selected background
PaintNodeBackground(oNode, oGraphics, oNodeRect);
// draw design selection
PaintNodeBackgroundDesignSelection(oNode, oGraphics, oNodeRect);
// draw expand/collapse boxes
if (oNode.GetShowPlusMinus() == true)
PaintExpandBox(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemBox, ref m_mapItemBoxToRect);
// draw lines between nodes
PaintNodeLines(oNode, oGraphics, nX + nodeSpace, nY, m_mapItemBoxToRect, m_mapSubItemToRect);
// draw item header
PaintNodeText(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemCheck, ref m_mapItemCheckToRect);
// check the design time highlight
if (oNode.DesignHighlighted)
{
if (oNode.GetCheckBoxes() == false)
{
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left + 2, oNodeRect.Top - 1,
Width - oNodeRect.Left - 7 - m_oTreeView.GetScrollBarWidth(), oNodeRect.Height - 2);
}
else
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left + 2, oNodeRect.Top - 1,
(int)oNodeRect.Width, oNodeRect.Height - 2);
}
}
else
{
if (oNode.CheckBoxVisible == true)
{
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left, oNodeRect.Top - 1,
Width - oNodeRect.Left - 7 - m_oTreeView.GetScrollBarWidth() + 2, oNodeRect.Height - 2);
}
else
{
oGraphics.DrawRectangle(Pens.Black, oNodeRect.Left, oNodeRect.Top - 1,
(int)oNodeRect.Width, oNodeRect.Height - 2);
}
}
}
}
}
// for the nodes being drawn before the visible area, but still needed for the
// lines painting
if (nY < nGroupY && oNode.TreeView.IsDesignMode == false)
{
// draw expand/collapse boxes
PaintExpandBox(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemBox, ref m_mapItemBoxToRect);
}
// for the nodes being at the position under the drawing visible area, draw the lines
// so it is visible that there are some other child nodes even they are not visible
if (nY > nMaxY && oNode.TreeView.IsDesignMode == false)
{
// draw expand/collapse boxes
PaintExpandBox(oNode, oGraphics, nX + nodeSpace, nY, ref m_mapRectToItemBox, ref m_mapItemBoxToRect);
// draw lines between nodes
PaintNodeLines(oNode, oGraphics, nX + nodeSpace, nY, m_mapItemBoxToRect, m_mapSubItemToRect);
}
nY += height;
nY += m_oTreeView.Style.NodeSpaceVertical;
// draw all subitems
if (oNode.TreeView.Sorted == true)
{
ArrayList aList = new ArrayList();
foreach (Node oSubNode in oNode.Nodes)
aList.Add(oSubNode);
aList.Sort();
for (int nNode = 0; nNode < aList.Count; nNode ++)
{
Node oSubNode = aList[nNode] as Node;
if (oSubNode == null || oSubNode.Visible == false)
continue;
int nOldNX = nX;
nX += 12;
nX += nodeSpace;
PaintNode(oSubNode, oGraphics, ref nX, ref nY, Width, ref m_mapSubItemToRect,
ref m_mapRectToSubItem, ref m_mapRectToItemBox, ref m_mapItemBoxToRect,
ref m_mapRectToItemCheck, ref m_mapItemCheckToRect,
ref m_mapRectToItemFlag, ref m_mapItemFlagToRect);
nX = nOldNX;
}
}
else
{
// sort the nodes by the m_nCollectionOrder
// SortedList aList = new SortedList();
foreach (Node oSubNode in oNode.Nodes)
{
if (oSubNode.m_nCollectionOrder == -1)
oSubNode.m_nCollectionOrder = oSubNode.Index;
// try
// {
// aList.Add(oSubNode.m_nCollectionOrder, oSubNode);
// }
// catch
// {
// aList.Add(oSubNode.Index, oSubNode);
// }
}
// for (int nNode = 0; nNode < aList.Count; nNode ++)
Node [] aList = oNode.Nodes.GetNodesCollectionSorted();
for (int nNode = 0; nNode < aList.Length; nNode ++)
{
//Node oSubNode = aList.GetByIndex(nNode) as Node;
Node oSubNode = aList[nNode] as Node;
if (oSubNode.Visible == false)
continue;
int nOldNX = nX;
nX += 12;
nX += nodeSpace;
PaintNode(oSubNode, oGraphics, ref nX, ref nY, Width, ref m_mapSubItemToRect,
ref m_mapRectToSubItem, ref m_mapRectToItemBox, ref m_mapItemBoxToRect,
ref m_mapRectToItemCheck, ref m_mapItemCheckToRect, ref m_mapRectToItemFlag, ref m_mapItemFlagToRect);
nX = nOldNX;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="g"></param>
/// <returns></returns>
internal int GetFullHeight(Node node, Graphics g)
{
int height = node.GetHeight(g) + GetTreeView().Style.NodeSpaceVertical;
if (this.IsExpanded == true)
{
foreach (Node subNode in node.Nodes)
height += subNode.GetFullHeight(subNode, g);
}
return height;
}