private string GetMessageItem(GKNet.Message msg)
{
Peer sender = Core.FindPeer(msg.Sender);
string senderName = (msg.Sender == LocalId) ? string.Empty : string.Format("[{0}]", sender.Profile.UserName);
return(string.Format("{0:yyyy/MM/dd HH:mm} {1}\r\n{2}", msg.Timestamp, senderName, msg.Text));
}
void IChatForm.OnMessageReceived(Peer sender, GKNet.Message message)
{
Invoke((MethodInvoker) delegate {
PrintMessage(message, true);
UpdateStatus();
});
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
if (e.Index < 0 || e.Index >= Items.Count)
{
return;
}
GKNet.Message msg = (GKNet.Message)Items[e.Index];
bool senderIsLocal = (msg.Sender == LocalId);
string txt = GetMessageItem(msg);
bool isSelected = (e.State & DrawItemState.Selected) == DrawItemState.Selected;
Rectangle rt = e.Bounds;
Font fnt = Font;
Brush itemBrush;
if (isSelected)
{
itemBrush = (senderIsLocal) ? Brushes.Goldenrod : Brushes.LightSteelBlue;
}
else
{
itemBrush = (senderIsLocal) ? Brushes.PaleGoldenrod : Brushes.GhostWhite;
}
Rectangle rt1 = rt;
rt1.Width -= 1;
rt1.Height -= 1;
using (GraphicsPath path = CreateRoundedRectangle(rt1.Left, rt1.Top + 3, rt1.Width, rt1.Height - 3 * 2, 5)) {
e.Graphics.FillPath(itemBrush, path);
var pen = (isSelected) ? fPen2 : fPen1;
e.Graphics.DrawPath(pen, path);
}
if (senderIsLocal)
{
// Undelivered / Delivered
var icon = UIHelper.GetMessageStatusImage(msg.Status);
if (icon != null)
{
e.Graphics.DrawImage(icon, rt.Right - icon.Width - 2, rt.Top + 4);
}
}
rt.Inflate(-5, -2);
StringFormat fmt = new StringFormat();
fmt.Alignment = StringAlignment.Near;
fmt.LineAlignment = StringAlignment.Center;
e.Graphics.DrawString(txt, fnt, Brushes.Black, rt, fmt);
base.OnDrawItem(e);
}
private void PrintMessage(GKNet.Message msg, bool scrollToBottom)
{
lstChatMsgs.Items.Add(msg);
if (scrollToBottom)
{
lstChatMsgs.ScrollToBottom();
}
}
protected override void OnMeasureItem(MeasureItemEventArgs e)
{
base.OnMeasureItem(e);
if (e.Index < 0 || e.Index >= Items.Count)
{
return;
}
GKNet.Message msg = (GKNet.Message)Items[e.Index];
string txt = GetMessageItem(msg);
SizeF txt_size = e.Graphics.MeasureString(txt, this.Font);
e.ItemHeight = (int)txt_size.Height + 2 * ItemMargin;
e.ItemWidth = (int)txt_size.Width;
}
