public void Remove(ScrollingBoxItem value)
{
base.InnerList.Remove(value);
if (OnCollectionChanged != null)
{
OnCollectionChanged(this, new EventArgs());
}
}
public void InsertAt(int index, ScrollingBoxItem value)
{
base.InnerList.Insert(index, value);
if (OnCollectionChanged != null)
{
OnCollectionChanged(this, new EventArgs());
}
}
public int Add(ScrollingBoxItem value)
{
int index = base.InnerList.Add(value);
if (OnCollectionChanged != null)
{
OnCollectionChanged(this, new EventArgs());
}
return(index);
}
protected virtual void PositionItems()
{
for (int i = 0; i < Items.Count; i++)
{
ScrollingBoxItem item = Items[i];
if (MovingDirection == ArrowDirection.Up)
{
if (item.rectF.Y + item.rectF.Height < 0)
{
if (i == 0)
{
// Goto the bottom of the screen list items
item.rectF.Y = Items[Items.Count - 1].rectF.Y + Height + item.rectF.Height;
}
else
{
item.rectF.Y = Items[i - 1].rectF.Bottom;
}
}
else
{
// Move up the screen
item.rectF.Y -= 1;
}
}
else if (MovingDirection == ArrowDirection.Down)
{
if (item.rectF.Y > this.Height)
{
if (i == Items.Count - 1)
{
// Goto the top of the screen list items
item.rectF.Y = Items[0].rectF.Y - Height - item.rectF.Height;
}
else
{
item.rectF.Y = Items[i + 1].rectF.Y - item.rectF.Height;
}
}
else
{
// Move down the screen
item.rectF.Y += 1;
}
}
}
this.Invalidate();
}
public override void OnPaint(IGUIContext ctx, RectangleF bounds)
{
base.OnPaint(ctx, bounds);
if (Font == null)
{
return;
}
for (int i = 0; i < Items.Count; i++)
{
ScrollingBoxItem item = Items[i];
RectangleF r = item.rectF;
r.Offset(bounds.Left, bounds.Top);
if (i == 0)
{
r.Offset(0, Padding.Top);
}
if (bounds.IntersectsWith(r))
{
var txt = item as ScrollingBoxText;
if (txt != null)
{
ctx.DrawString(txt.Text, Font, Style.ForeColorBrush, r, Format);
}
else
{
ScrollingBoxImage img = item as ScrollingBoxImage;
if (img != null)
{
img.Image.Paint(ctx, new RectangleF(
r.X + ImagePadding.Left,
r.Top + ImagePadding.Top,
r.Width - ImagePadding.Left - ImagePadding.Right,
r.Height - ImagePadding.Top - ImagePadding.Bottom));
}
}
}
}
}
protected virtual void RecalculateItems()
{
SizeF sizeF = new SizeF();
float availWidth = Width - Padding.Width;
TotalItemHeight = 0;
for (int i = 0; i < Items.Count; i++)
{
ScrollingBoxItem item = Items[i];
item.rectF.X = Padding.Left;
item.rectF.Width = (float)availWidth;
if (item.GetType() == typeof(ScrollingBoxText))
{
ScrollingBoxText textItem = (ScrollingBoxText)item;
if (String.IsNullOrEmpty(textItem.Text))
{
sizeF = new SizeF(availWidth, Font.LineHeight);
}
else
{
SizeF sz = Font.Measure(textItem.Text, availWidth, Format);
sizeF = new SizeF(sz.Width, sz.Height + Font.LineHeight - Font.Height);
}
}
else if (item.GetType() == typeof(ScrollingBoxImage))
{
ScrollingBoxImage imgItem = (ScrollingBoxImage)item;
sizeF = imgItem.Image.Size;
sizeF = new SizeF(sizeF.Width + ImagePadding.Left + ImagePadding.Right, sizeF.Height + ImagePadding.Top + ImagePadding.Bottom);
imgItem.rectF.Width = sizeF.Width;
switch (Alignment)
{
case StringAlignment.Near:
item.rectF.X = Padding.Left + ImagePadding.Left;
break;
case StringAlignment.Center:
item.rectF.X = (availWidth / 2) - (sizeF.Width / 2) + Padding.Left + ImagePadding.Left;
break;
case StringAlignment.Far:
item.rectF.X = Width - sizeF.Width - Padding.Right - ImagePadding.Right;
break;
}
}
if (i == 0)
{
sizeF = new SizeF(sizeF.Width, sizeF.Height + Padding.Top);
}
item.rectF.Height = sizeF.Height;
TotalItemHeight += sizeF.Height;
if (i == 0)
{
if (!startingPositionHasBeenSetAfterHeight)
{
item.rectF.Y = Height;
startingPositionHasBeenSetAfterHeight = true;
}
}
else
{
item.rectF.Y = Items[i - 1].rectF.Bottom;
}
}
}