protected override void OnPaint(PaintEventArgs e)
{
if (repaint)
{
if (buffer == null)
{
buffer = new Bitmap(ClientSize.Width, ClientSize.Height, e.Graphics);
bufferGraphics = Graphics.FromImage(buffer);
}
paint(root, bufferGraphics, 0);
repaint = false;
}
e.Graphics.DrawImageUnscaled(buffer, 0, 0);
if (highLighted != null)
{
if (highLightedIsDir)
{
e.Graphics.DrawRectangle(yellow2, highLighted.Bounds);
}
else if (highLighted.Parent != null)
{
e.Graphics.DrawRectangle(yellow2, highLighted.Parent.Bounds);
}
if (!highLightedIsDir)
{
e.Graphics.DrawRectangle(Pens.Red, (int)Math.Round(highLighted.getX()), (int)Math.Round(highLighted.getY()),
(int)Math.Round(highLighted.getWidth() - 1D), (int)Math.Round(highLighted.getHeight() - 1D));
}
}
}
/**
* calculate the positions for all the elements of the root.
*
* @param root the root to calculate
*/
public void calculatePositions(TreeMapNode root)
{
if (root == null)
{
return;
}
ArrayList v = root.Nodes;
if (v != null)
{
calculatePositionsRec(root.getX(), root.getY(), root.getWidth(), root.getHeight(), this.sumWeight(v), v);
}
}
private void paint(TreeMapNode n, Graphics g, int level)
{
if (n.IsLeaf)
{
RectangleF rect = new RectangleF((float)n.getX(), (float)n.getY(), (float)n.getWidth(), (float)n.getHeight());
if (rect.Width > 0 && rect.Height > 0)
{
gp.Reset();
gp.AddEllipse(rect.Left - rect.Width / 4, rect.Top - rect.Height / 4, rect.Width + 2 * rect.Width / 4,
rect.Height + 2 * rect.Height / 4);
PathGradientBrush pgb = new PathGradientBrush(gp);
pgb.CenterColor = Color.White;
string ext = Path.GetExtension(n.getLabel()).TrimStart('.');
if (extensions.ContainsKey(ext.ToLower()))
{
pgb.SurroundColors = new Color[] { (Color)extensions[ext.ToLower()] };
}
else
{
Color c = Color.FromKnownColor((KnownColor)((int)KnownColor.ForestGreen + extensions.Count));
extensions[ext.ToLower()] = c;
pgb.SurroundColors = new Color[] { c };
}
pgb.CenterPoint = new PointF(rect.Left + rect.Width / 4, rect.Top + rect.Height / 2);
g.FillRectangle(pgb, rect);
pgb.Dispose();
string label = Path.GetFileName(n.getLabel());
SizeF labelSize = g.MeasureString(label, f, (int)rect.Width);
if (rect.Width > 1 && rect.Height > 1 && File.Exists(n.getLabel()))
{
if (n.Icon == null)
{
n.Icon = Icon.ExtractAssociatedIcon(n.getLabel());
}
if (rect.Width >= n.Icon.Width && rect.Height >= n.Icon.Height + labelSize.Height)
{
Rectangle iconRect = new Rectangle((int)rect.Left + (int)rect.Width / 2 - n.Icon.Width / 2,
(int)rect.Top + (int)rect.Height / 2 - n.Icon.Height / 2 - (int)labelSize.Height / 2, n.Icon.Width, n.Icon.Height);
if (clipBoard == n && cutClipboard)
{
ImageAttributes ia = new ImageAttributes();
ia.SetGamma(0.3F);
g.DrawImage(n.Icon.ToBitmap(), iconRect, 0, 0, n.Icon.Width, n.Icon.Height, GraphicsUnit.Pixel, ia);
}
else
{
g.DrawIconUnstretched(n.Icon, iconRect);
}
Region clip = g.Clip;
g.Clip = new Region(rect);
g.DrawString(label, f, Brushes.Black, new RectangleF(rect.Left + rect.Width / 2 - labelSize.Width / 2,
rect.Top + rect.Height / 2 - labelSize.Height / 2 + iconRect.Height / 2, labelSize.Width, labelSize.Height));
g.Clip = clip;
}
else
{
double ratio = Math.Min(rect.Width / n.Icon.Width, rect.Height / n.Icon.Height);
if (clipBoard == n && cutClipboard)
{
ImageAttributes ia = new ImageAttributes();
ia.SetGamma(0.3F);
g.DrawImage(n.Icon.ToBitmap(), new Rectangle((int)Math.Round(rect.Left + rect.Width / 2 - n.Icon.Width * ratio / 2),
(int)Math.Round(rect.Top + rect.Height / 2 - n.Icon.Height * ratio / 2),
(int)Math.Round(n.Icon.Width * ratio), (int)Math.Round(n.Icon.Height * ratio)), 0, 0, n.Icon.Width, n.Icon.Height,
GraphicsUnit.Pixel, ia);
}
else
{
g.DrawIcon(n.Icon, new Rectangle((int)Math.Round(rect.Left + rect.Width / 2 - n.Icon.Width * ratio / 2),
(int)Math.Round(rect.Top + rect.Height / 2 - n.Icon.Height * ratio / 2),
(int)Math.Round(n.Icon.Width * ratio), (int)Math.Round(n.Icon.Height * ratio)));
}
}
}
}
}
else if (level > 1)
{
RectangleF rect = new RectangleF((float)n.getX(), (float)n.getY(), (float)n.getWidth(), (float)n.getHeight());
if (rect.Width > 0 && rect.Height > 0)
{
gp.Reset();
gp.AddEllipse(rect.Left - rect.Width / 4, rect.Top - rect.Height / 4, rect.Width + 2 * rect.Width / 4,
rect.Height + 2 * rect.Height / 4);
PathGradientBrush pgb = new PathGradientBrush(gp);
pgb.CenterColor = Color.White;
pgb.SurroundColors = new Color[] { Color.YellowGreen };
pgb.CenterPoint = new PointF(rect.Left + rect.Width / 4, rect.Top + rect.Height / 2);
g.FillRectangle(pgb, rect);
pgb.Dispose();
string label = Path.GetFileName(n.getLabel());
SizeF labelSize = g.MeasureString(label, f);
Region clip = g.Clip;
g.Clip = new Region(rect);
g.DrawString(label, f, Brushes.Black, new RectangleF(rect.Left + rect.Width / 2 - labelSize.Width / 2,
rect.Top + rect.Height / 2 - labelSize.Height / 2, labelSize.Width, labelSize.Height));
g.Clip = clip;
}
}
if (depthLevel == 0 || level < depthLevel)
{
foreach (TreeMapNode child in n.Nodes)
{
paint(child, g, level + 1);
}
}
}