/// <summary>
/// Paint the background of the node
/// </summary>
/// <param name="oNode"></param>
/// <param name="oNodeRect"></param>
private void PaintNodeBackground(Node oNode, Graphics oGraphics, Rectangle oNodeRect)
{
// if the node is selected node, then draw the selection
if (oNode.IsSelected == true && m_oTreeView.HideSelection == false)
{
int nScrollWidth = 2;
int nAdd = 0;
if (oNode.GetCheckBoxes() == true && oNode.CheckBoxVisible == true)
{
//if (oNode.GetShowPlusMinus() == false)
// nAdd = -2;
//else
nAdd = -1;
}
nScrollWidth += m_oTreeView.GetScrollBarWidth();
m_oBrush.Color = oNode.GetSelectedBorderColor();
// if full row select
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.FillRectangle(m_oBrush, oNodeRect.X + 1 + nAdd, oNodeRect.Y - 1,
Width - (oNodeRect.X + 3) - nScrollWidth - nAdd, oNodeRect.Height - 1);
m_oBrush.Color = oNode.GetSelectedBackColor();
if (oNode.GetSelectedFillStyle() == FillStyle.Flat)
{
oGraphics.FillRectangle(m_oBrush, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.HorizontalFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3,
FillStyle.HorizontalFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.VerticalFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3,
FillStyle.VerticalFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.DiagonalBackward)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3,
FillStyle.DiagonalBackward, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.DiagonalForward)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3,
FillStyle.DiagonalForward, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.VistaFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3,
FillStyle.VistaFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.VerticalCentreFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 5) - nScrollWidth - nAdd, oNodeRect.Height - 3,
FillStyle.VerticalCentreFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
}
else
{
oGraphics.FillRectangle(m_oBrush, oNodeRect.X + 1 + nAdd, oNodeRect.Y - 1,
(int)oNodeRect.Width, oNodeRect.Height - 1);
m_oBrush.Color = oNode.GetSelectedBackColor();
if (oNode.GetSelectedFillStyle() == FillStyle.Flat)
{
oGraphics.FillRectangle(m_oBrush, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.HorizontalFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3,
FillStyle.HorizontalFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.VerticalFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3,
FillStyle.VerticalFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.DiagonalBackward)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3,
FillStyle.DiagonalBackward, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.DiagonalForward)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3,
FillStyle.DiagonalForward, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.VistaFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3,
FillStyle.VistaFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
else
if (oNode.GetSelectedFillStyle() == FillStyle.VerticalCentreFading)
{
AreaPainter.PaintRectangle(oGraphics, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 2, oNodeRect.Height - 3,
FillStyle.VerticalCentreFading, m_oBrush.Color, Color.White, BorderStyle.None,
Color.Transparent);
}
}
}
// draw the focus rectangle
if (oNode.IsSelected == true && oNode.TreeView.m_bUserFocus == true && oNode.TreeView.FocusNode == oNode
&& oNode.TreeView.FocusRectangle == true)
{
int nScrollWidth = 2;
int nAdd = 0;
nScrollWidth += m_oTreeView.GetScrollBarWidth();
if (oNode.GetCheckBoxes() == true && oNode.CheckBoxVisible == true)
{
//if (oNode.GetShowPlusMinus() == false)
// nAdd = -2;
//else
nAdd = -1;
}
Pen oRectPen = new Pen(Color.Black, 1);
oRectPen.DashStyle = DashStyle.Dot;
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.DrawRectangle(oRectPen, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
Width - (oNodeRect.X + 6) - nScrollWidth - nAdd, oNodeRect.Height - 4);
}
else
{
oGraphics.DrawRectangle(oRectPen, oNodeRect.X + 2 + nAdd, oNodeRect.Y,
(int)oNodeRect.Width - 3, oNodeRect.Height - 4);
}
oRectPen.Dispose();
}
// if not selected
if (oNode.IsSelected == false)
{
// when draging the mouse over nodes, test if the node is being highlighted
if (oNode == oNode.TreeView.HighlightedNode)
{
int nScrollWidth = 2;
nScrollWidth += m_oTreeView.GetScrollBarWidth();
m_oBrush.Color = oNode.GetHighlightedBackColor();
if (m_oTreeView.Style.FullRowSelect == true || oNode.Panel != null)
{
oGraphics.FillRectangle(m_oBrush, oNodeRect.X + 1, oNodeRect.Y - 1,
Width - (oNodeRect.X + 3) - nScrollWidth, oNodeRect.Height - 1);
}
else
{
oGraphics.FillRectangle(m_oBrush, oNodeRect.X + 1, oNodeRect.Y - 1,
(int)oNodeRect.Width, oNodeRect.Height - 1);
}
}
}
}
/// <summary>
/// Paints the underline for the specified node
/// </summary>
/// <param name="oNode"></param>
/// <param name="oGraphics"></param>
/// <param name="nX"></param>
/// <param name="nY"></param>
private void PaintNodeUnderline(Node oNode, string sText, Graphics oGraphics, int nX, int nY)
{
UnderlineStyle oStyle = oNode.GetUnderlineStyle();
Pen oPen = new Pen(oNode.GetUnderlineColor(), 1);
SizeF oSize = oGraphics.MeasureString(StringDrawUtils.GetInstance().GetTextFromFormattedString(sText),
oNode.GetFont(), oNode.GetTreeView().GetDrawWidth() - nX - 8);
oSize.Width += 2;
if (oStyle == UnderlineStyle.Tilde)
{
Pen oClearPen = null;
if (oNode.IsSelected == false)
{
if (oNode.BackgroundStyle.Visible == false)
oClearPen = oNode.GetUnderlineBackColor();
else
oClearPen = new Pen(oNode.BackgroundStyle.BackColor, 1);
}
else
oClearPen = new Pen(oNode.GetSelectedBackColor(), 1);
int nStep = 0;
while (nX + 4 + nStep < nX + oSize.Width)
{
oGraphics.DrawLine(oPen, nX + 4 + nStep, nY + oSize.Height - 2, nX + 5 + nStep, nY + oSize.Height - 2);
oGraphics.DrawLine(oClearPen, nX + 5 + nStep, nY + oSize.Height - 2, nX + 6 + nStep, nY + oSize.Height - 2);
nStep += 4;
}
nStep = 0;
while (nX + 4 + nStep < nX + oSize.Width)
{
oGraphics.DrawLine(oPen, nX + 5 + nStep, nY + oSize.Height - 1, nX + 6 + nStep, nY + oSize.Height - 1);
oGraphics.DrawLine(oClearPen, nX + 6 + nStep, nY + oSize.Height - 1, nX + 7 + nStep, nY + oSize.Height - 1);
nStep += 2;
}
nStep = 0;
while (nX + 4 + nStep < nX + oSize.Width)
{
oGraphics.DrawLine(oPen, nX + 6 + nStep, nY + oSize.Height, nX + 7 + nStep, nY + oSize.Height);
oGraphics.DrawLine(oClearPen, nX + 7 + nStep, nY + oSize.Height, nX + 8 + nStep, nY + oSize.Height);
nStep += 4;
}
oClearPen.Dispose();
}
else
{
if (oStyle == UnderlineStyle.Dash)
oPen.DashStyle = DashStyle.Dash;
if (oStyle == UnderlineStyle.Dot)
oPen.DashStyle = DashStyle.Dot;
oGraphics.DrawLine(oPen, nX + 4, nY + oSize.Height - 2, nX + oSize.Width, nY + oSize.Height - 2);
}
oPen.Dispose();
}