private NumberLineNumber getPooledNumber()
{
NumberLineNumber number;
if (inactiveNumbers.Count > 0)
{
number = inactiveNumbers[0];
inactiveNumbers.RemoveAt(0);
number.Visible = true;
}
else
{
number = new NumberLineNumber(numberlineScroller.createWidgetT("TextBox", "TextBox", 0, 0, 10, 15, Align.Left | Align.Top, "") as TextBox,
numberlineScroller.createWidgetT("Widget", "SeparatorSkin", 0, 16, 1, numberlineScroller.Height - 16, Align.Left | Align.Top, ""), this);
}
return(number);
}
private void returnNumberToPool(NumberLineNumber number)
{
number.Visible = false;
inactiveNumbers.Add(number);
}
void canvasModified()
{
float leftSide = numberlineScroller.CanvasPosition.x - pixelsPerSecond * numberSeparationDuration;
float rightSide = leftSide + numberlineScroller.Width + pixelsPerSecond * numberSeparationDuration;
//Remove inactive numbers
for (int i = 0; i < activeNumbers.Count; ++i)
{
NumberLineNumber number = activeNumbers[i];
if (number.Right < leftSide)
{
activeNumbers.RemoveAt(i--);
returnNumberToPool(number);
}
if (number.Left > rightSide)
{
activeNumbers.RemoveAt(i--);
returnNumberToPool(number);
}
}
//If there are any active numbers
if (activeNumbers.Count > 0)
{
NumberLineNumber number = null;
//See if any numbers need to be added to the front of the list
float startingPoint = activeNumbers[0].Time - numberSeparationDuration;
for (float i = startingPoint; i *pixelsPerSecond > leftSide; i -= numberSeparationDuration)
{
number = getPooledNumber();
number.Time = i;
activeNumbers.Insert(0, number);
}
//Add numbers to the back of the list
number = null;
startingPoint = activeNumbers[activeNumbers.Count - 1].Time + numberSeparationDuration;
for (float i = startingPoint; i <= timelineView.Duration && i * pixelsPerSecond < rightSide; i += numberSeparationDuration)
{
number = getPooledNumber();
number.Time = i;
activeNumbers.Add(number);
}
if (number != null)
{
IntSize2 canvasSize = numberlineScroller.CanvasSize;
if (number.Right > canvasSize.Width)
{
canvasSize.Width = number.Right;
numberlineScroller.CanvasSize = canvasSize;
}
}
}
//If there are currently no active numbers
else
{
//Compute the starting point on the next even start point.
float startingPoint = leftSide / pixelsPerSecond;
int numTicks = (int)(startingPoint / numberSeparationDuration);
startingPoint = numTicks * numberSeparationDuration;
NumberLineNumber number = null;
for (float i = startingPoint; i <= timelineView.Duration && i * pixelsPerSecond < rightSide; i += numberSeparationDuration)
{
number = getPooledNumber();
number.Time = i;
activeNumbers.Add(number);
}
IntVector2 scrollPos = numberlineScroller.CanvasPosition;
numberlineScroller.CanvasSize = new IntSize2(number != null ? number.Right : 0, numberlineScroller.Height);
numberlineScroller.CanvasPosition = scrollPos; //Have to set the position back cause sometimes it changes.
}
}
