public void CommonInit()
{
// Create the text view and add it as a subview. We keep a weak reference
// to that view afterwards for laying out the segment layers.
text = new GraphTextView(new CGRect(0.0f, 0.0f, 32.0f, 112.0f));
AddSubview(text);
// Create a mutable array to store segments, which is required by -addSegment
segments = new List <GraphViewSegment> ();
// Create a new current segment, which is required by -addX:y:z and other methods.
// This is also a weak reference (we assume that the 'segments' array will keep the strong reference).
current = AddSegment();
}
public void CommonInit ()
{
// Create the text view and add it as a subview. We keep a weak reference
// to that view afterwards for laying out the segment layers.
text = new GraphTextView (new CGRect (0.0f, 0.0f, 32.0f, 112.0f));
AddSubview (text);
// Create a mutable array to store segments, which is required by -addSegment
segments = new List<GraphViewSegment> ();
// Create a new current segment, which is required by -addX:y:z and other methods.
// This is also a weak reference (we assume that the 'segments' array will keep the strong reference).
current = AddSegment ();
}
// The initial position of a segment that is meant to be displayed on the left side of the graph.
// This positioning is meant so that a few entries must be added to the segment's history before it becomes
// visible to the user. This value could be tweaked a little bit with varying results, but the X coordinate
// should never be larger than 16 (the center of the text view) or the zero values in the segment's history
// will be exposed to the user.
GraphViewSegment AddSegment()
{
// Create a new segment and add it to the segments array.
GraphViewSegment segment = new GraphViewSegment();
segments.Insert(0, segment);
//Ensure that newly added segment layers are placed after the text view's layer so that the text view
// always renders above the segment layer.
Layer.InsertSublayerBelow(segment.Layer, text.Layer);
// Console.WriteLine (this.Layer.InsertSublayerBelow (segment.layer, text.Layer));
// Position it properly
//segment.layer.Position = kSegmentInitialPosition;
segment.Layer.Position = kSegmentInitialPosition;
return(segment);
}
void RecycleSegment()
{
// We start with the last object in the segments array, as it should either be visible onscreen,
// which indicates that we need more segments, or pushed offscreen which makes it eligable for recycling.
int lastIndex = segments.Count - 1;
GraphViewSegment lastObj = segments [lastIndex];
//Console.WriteLine(Layer.Bounds);
if (lastObj.IsVisibleInRect(Layer.Bounds))
{
current = AddSegment();
}
else
{
lastObj.Reset();
lastObj.Layer.Position = kSegmentInitialPosition;
segments.Insert(0, lastObj);
segments.Remove(lastObj);
//And make it our current segment
current = lastObj;
}
}
public LayerDelegate(GraphViewSegment parent)
{
_parent = parent;
}
public LayerDelegate (GraphViewSegment parent)
{
_parent = parent;
}
void RecycleSegment ()
{
// We start with the last object in the segments array, as it should either be visible onscreen,
// which indicates that we need more segments, or pushed offscreen which makes it eligable for recycling.
int lastIndex = segments.Count - 1;
GraphViewSegment lastObj = segments [lastIndex];
//Console.WriteLine(Layer.Bounds);
if (lastObj.IsVisibleInRect (Layer.Bounds)) {
current = AddSegment ();
} else {
lastObj.Reset ();
lastObj.Layer.Position = kSegmentInitialPosition;
segments.Insert (0, lastObj);
segments.Remove (lastObj);
//And make it our current segment
current = lastObj;
}
}
// The initial position of a segment that is meant to be displayed on the left side of the graph.
// This positioning is meant so that a few entries must be added to the segment's history before it becomes
// visible to the user. This value could be tweaked a little bit with varying results, but the X coordinate
// should never be larger than 16 (the center of the text view) or the zero values in the segment's history
// will be exposed to the user.
GraphViewSegment AddSegment ()
{
// Create a new segment and add it to the segments array.
GraphViewSegment segment = new GraphViewSegment ();
segments.Insert (0, segment);
//Ensure that newly added segment layers are placed after the text view's layer so that the text view
// always renders above the segment layer.
Layer.InsertSublayerBelow (segment.Layer, text.Layer);
// Console.WriteLine (this.Layer.InsertSublayerBelow (segment.layer, text.Layer));
// Position it properly
//segment.layer.Position = kSegmentInitialPosition;
segment.Layer.Position = kSegmentInitialPosition;
return segment;
}
