protected override Size CalculateSize(Graphics g)
{
FImg = null;
if (this.Node != null)
{
DataNodeImage data = this.Node.Data as DataNodeImage;
if (data != null)
{
using (Bitmap bmp = new Bitmap(data.FileName))
{
double ratio = 300.0f / bmp.Size.Height;
FImg = bmp.GetThumbnailImage((int)(bmp.Size.Width * ratio), 300,
new System.Drawing.Image.GetThumbnailImageAbort(OnGetThumbnail), IntPtr.Zero);
return(FImg.Size);
}
}
else
{
return(base.CalculateSize(g));
}
}
else
{
return(base.CalculateSize(g));
}
}
protected override void DoPaint(Graphics g)
{
DataNodeImage data = this.Node.Data as DataNodeImage;
if (FImg != null)
{
Rectangle destRect = this.ClientRectangle;
g.DrawImage(FImg, destRect, 0, 0, FImg.Size.Width, FImg.Size.Height, GraphicsUnit.Pixel);
}
}
private void geniusTreeView1_OnGetNodeText(Genius.Controls.TreeView.GeniusTreeView Sender, Genius.Controls.TreeView.NodeTextEventArgs e)
{
if (geniusTreeView1.Header.DisplayIndexToIndex(e.DisplayColumn) == 2)
{
DataNodeImage data = e.Node.Data as DataNodeImage;
if (data != null)
{
LoadBitmap(data);
if (data.Bmp != null)
{
e.Text = data.size.ToString();
}
}
}
}
private void LoadBitmap(DataNodeImage data)
{
if (data.Bmp == null && File.Exists(data.FileName))
{
Cursor = Cursors.WaitCursor;
try
{
using (Bitmap bmp = new Bitmap(data.FileName))
{
double ratio = 105.0f / bmp.Size.Height;
data.Bmp = bmp.GetThumbnailImage((int)(bmp.Size.Width * ratio), 105,
new System.Drawing.Image.GetThumbnailImageAbort(OnGetThumbnail), IntPtr.Zero);
data.size = bmp.Size;
}
}
finally
{
Cursor = Cursors.Default;
}
}
}
private void geniusTreeView1_OnDrawCellNode(Genius.Controls.TreeView.GeniusTreeView Sender, Genius.Controls.TreeView.PaintNodeEventArgs e)
{
int colindex;
colindex = Sender.Header.DisplayIndexToIndex(e.Info.DisplayColumn);
DataNodeImage data = e.Node.Data as DataNodeImage;
if (data != null)
{
if (colindex == 1)
{
e.Info.DefaultDrawing = false;
LoadBitmap(data);
//e.graphics.DrawImage(data.Bmp, e.CellRect);
Rectangle destRect = new Rectangle(e.Info.NodeRect.Location, data.Bmp.Size);
int offsetx = (e.Info.NodeRect.Width - data.Bmp.Size.Width) / 2;
destRect.Offset(offsetx, 0);
e.Info.graphics.DrawImage(data.Bmp, destRect, 0, 0, data.Bmp.Size.Width, data.Bmp.Size.Height, GraphicsUnit.Pixel);
}
}
else if (colindex == 1)
{
bool selected = false;
e.Info.DefaultDrawing = false;
System.Random rnd = new Random();
Rectangle r = e.Info.NodeRect;
if ((e.Node.State & NodeState.Selected) == NodeState.Selected && geniusTreeView1.SelectedColumn == 1)
{
selected = true;
geniusTreeView1.DrawSelectedRectangle(e.Info.graphics, e.Info.NodeRect, true, e.Info);
}
r.Y += 1;
r.Height -= 1;
r.Inflate(-2, -5);
r.Width = rnd.Next(r.Width) + 1; //car je ne veux pas de zéro
int pourcent = (int)(((double)r.Width / (double)(e.Info.NodeRect.Width - 4)) * 100);
using (GeniusLinearGradientBrush br = new GeniusLinearGradientBrush(Color.Blue, Color.LightBlue, 90))
{
using (Brush b = br.GetBrush(r))
{
/*
* Pen p = new Pen(b, r.Height);
* p.DashCap = DashCap.Flat;
* p.DashStyle = DashStyle.Custom;
* p.DashPattern = new float[]{0,10,11,20};
* e.graphics.DrawLine(p, r.Left+1, r.Top + r.Height / 2, r.Right, r.Top + r.Height / 2);
*/
e.Info.graphics.FillRectangle(b, r);
r.Width = e.Info.NodeRect.Width - 4;
if (r.Width == 0)
{
r.Width = 1;
}
e.Info.graphics.DrawRectangle(selected ? Pens.White : Pens.Black, r);
StringFormat sf = new StringFormat(StringFormatFlags.NoWrap);
sf.LineAlignment = StringAlignment.Center;
sf.Alignment = StringAlignment.Center;
sf.Trimming = StringTrimming.EllipsisCharacter;
e.Info.graphics.DrawString(String.Format("{0} %", pourcent), this.Font,
pourcent >= 55 || selected ? Brushes.White : Brushes.Black,
e.Info.NodeRect, sf);
}
}
}
}