public void ReloadData()
{
if (DataSource == null)
{
return;
}
CALayer parentLayer = _barChartView.Layer;
int barsCount = DataSource.NumberOfBarsOnChart(this);
for (int i = 0; i < xAxisText.Length; i++)
{
xAxisText [i].String = DataSource.TimeIntervalAtIndex(i);
}
_barChartView.UserInteractionEnabled = false;
float barHeight = (Bounds.Height - topBarMargin - yAxisMargin) / Convert.ToSingle(barsCount);
const float padding = 1.0f;
float initialY = barHeight / 2 + topBarMargin;
for (int i = 0; i < barsCount; i++)
{
BarLayer oneLayer = CreateBarLayer(barHeight - padding);
parentLayer.AddSublayer(oneLayer);
oneLayer.Position = new PointF(0, initialY + i * barHeight);
oneLayer.TimeValue = DataSource.ValueForBarAtIndex(this, i);
oneLayer.MoneyValue = DataSource.ValueForSecondaryBarAtIndex(this, i);
var timeTextLayer = (CATextLayer)oneLayer.Sublayers [BarLayer.TimeTextIndex];
timeTextLayer.String = DataSource.TimeForBarAtIndex(i);
timeTextLayer.Hidden = (string.Compare(timeTextLayer.String, "0.00", StringComparison.Ordinal) == 0);
timeTextLayer.Position = new PointF(timeTextLayer.Position.X, oneLayer.Bounds.Height / 2);
timeTextLayer.FontSize = (barsCount > 12) ? 9.0f : 10.0f;
var nsString = new NSString(DataSource.TextForBarAtIndex(this, i));
SizeF size = nsString.GetSizeUsingAttributes(new UIStringAttributes()
{
Font = LabelFont
});
var textLayer = (CATextLayer)oneLayer.Sublayers [BarLayer.DateTextIndex];
textLayer.String = DataSource.TextForBarAtIndex(this, i);
textLayer.FontSize = (barsCount > 12) ? 9.0f : 10.0f;
textLayer.Bounds = new RectangleF(0, 0, size.Width, size.Height);
textLayer.Position = new PointF(0.0f, oneLayer.Bounds.Height / 2);
if (barsCount > 12)
{
timeTextLayer.Opacity = 0.0f;
textLayer.Opacity = (i % 3 == 0) ? 1.0f : 0.0f;
}
else
{
timeTextLayer.Opacity = (string.Compare(timeTextLayer.String, "0.00", StringComparison.Ordinal) == 0) ? 0.0f : 1.0f;
}
}
_barChartView.UserInteractionEnabled = true;
}
private BarLayer CreateBarLayer(float barHeight)
{
var barLayer = new BarLayer()
{
ZPosition = 0,
BorderColor = UIColor.White.CGColor,
AnchorPoint = new PointF(0.0f, 0.5f),
Frame = new RectangleF(0, 0, Bounds.Width, barHeight)
};
var mainBar = new CALayer();
mainBar.AnchorPoint = new PointF(0.0f, 0.0f);
mainBar.Bounds = new RectangleF(0, 0, Bounds.Width - xAxisMargin - xTextMargin, barHeight);
mainBar.Position = new PointF(xAxisMargin, 0);
mainBar.BackgroundColor = MainBarColor.CGColor;
mainBar.SetValueForKeyPath(new NSNumber(minBarScale), new NSString("transform.scale.x"));
barLayer.AddSublayer(mainBar);
var secondaryBar = new CALayer();
secondaryBar.AnchorPoint = new PointF(0.0f, 0.0f);
secondaryBar.Bounds = new RectangleF(0, 0, Bounds.Width - xAxisMargin - xTextMargin, barHeight);
secondaryBar.Position = new PointF(xAxisMargin, 0);
secondaryBar.BackgroundColor = SecondaryBarColor.CGColor;
secondaryBar.SetValueForKeyPath(new NSNumber(minBarScale), new NSString("transform.scale.x"));
barLayer.AddSublayer(secondaryBar);
var emptyBar = new CALayer();
emptyBar.AnchorPoint = new PointF(0.0f, 0.0f);
emptyBar.Bounds = new RectangleF(0, 0, 2.0f, barHeight);
emptyBar.Position = new PointF(xAxisMargin, 0);
emptyBar.BackgroundColor = UIColor.Gray.CGColor;
barLayer.AddSublayer(emptyBar);
CGFont font = CGFont.CreateWithFontName(LabelFont.Name);
SizeF size = ((NSString)"00.00:00").StringSize(LabelFont);
var textLayer = new CATextLayer()
{
ContentsScale = UIScreen.MainScreen.Scale,
FontSize = 10.0f,
AnchorPoint = new PointF(0.0f, 0.5f),
AlignmentMode = CATextLayer.AlignmentLeft,
BackgroundColor = UIColor.Clear.CGColor,
ForegroundColor = LabelColor.CGColor
};
barLayer.AddSublayer(textLayer);
var timeTextLayer = new CATextLayer()
{
ContentsScale = UIScreen.MainScreen.Scale,
FontSize = 10.0f,
AnchorPoint = new PointF(0.0f, 0.5f),
AlignmentMode = CATextLayer.AlignmentLeft,
BackgroundColor = UIColor.Clear.CGColor,
ForegroundColor = SecondaryBarColor.CGColor
};
barLayer.AddSublayer(timeTextLayer);
if (font != null)
{
textLayer.SetFont(font);
timeTextLayer.SetFont(font);
font.Dispose();
}
CATransaction.DisableActions = true;
textLayer.Bounds = new RectangleF(new PointF(0, 0), size);
textLayer.Position = mainBar.Position;
timeTextLayer.Bounds = new RectangleF(new PointF(0, 0), size);
timeTextLayer.Position = new PointF(mainBar.Position.X + 5.0f, mainBar.Position.Y);
CATransaction.DisableActions = false;
return(barLayer);
}
private BarLayer CreateBarLayer ( nfloat barHeight)
{
var barLayer = new BarLayer () {
ZPosition = 0,
BorderColor = UIColor.White.CGColor,
AnchorPoint = new CGPoint ( 0.0f, 0.5f),
Frame = new CGRect ( 0, 0, Bounds.Width, barHeight)
};
var mainBar = new CALayer ();
mainBar.AnchorPoint = new CGPoint (0.0f, 0.0f);
mainBar.Bounds = new CGRect ( 0, 0, Bounds.Width - xAxisMargin - xTextMargin, barHeight);
mainBar.Position = new CGPoint ( xAxisMargin, 0);
mainBar.BackgroundColor = MainBarColor.CGColor;
mainBar.SetValueForKeyPath ( new NSNumber ( minBarScale), new NSString ( "transform.scale.x"));
barLayer.AddSublayer (mainBar);
var secondaryBar = new CALayer ();
secondaryBar.AnchorPoint = new CGPoint (0.0f, 0.0f);
secondaryBar.Bounds = new CGRect ( 0, 0, Bounds.Width - xAxisMargin - xTextMargin, barHeight);
secondaryBar.Position = new CGPoint ( xAxisMargin, 0);
secondaryBar.BackgroundColor = SecondaryBarColor.CGColor;
secondaryBar.SetValueForKeyPath ( new NSNumber ( minBarScale), new NSString ( "transform.scale.x"));
barLayer.AddSublayer (secondaryBar);
var emptyBar = new CALayer ();
emptyBar.AnchorPoint = new CGPoint (0.0f, 0.0f);
emptyBar.Bounds = new CGRect ( 0, 0, 2.0f, barHeight);
emptyBar.Position = new CGPoint ( xAxisMargin, 0);
emptyBar.BackgroundColor = UIColor.Gray.CGColor;
barLayer.AddSublayer (emptyBar);
CGFont font = CGFont.CreateWithFontName (LabelFont.Name);
CGSize size = ((NSString)"00.00:00").StringSize (LabelFont);
var textLayer = new CATextLayer () {
ContentsScale = UIScreen.MainScreen.Scale,
FontSize = 10.0f,
AnchorPoint = new CGPoint (0.0f, 0.5f),
AlignmentMode = CATextLayer.AlignmentLeft,
BackgroundColor = UIColor.Clear.CGColor,
ForegroundColor = LabelColor.CGColor
};
barLayer.AddSublayer (textLayer);
var timeTextLayer = new CATextLayer () {
ContentsScale = UIScreen.MainScreen.Scale,
FontSize = 10.0f,
AnchorPoint = new CGPoint (0.0f, 0.5f),
AlignmentMode = CATextLayer.AlignmentLeft,
BackgroundColor = UIColor.Clear.CGColor,
ForegroundColor = SecondaryBarColor.CGColor
};
barLayer.AddSublayer (timeTextLayer);
if (font != null) {
textLayer.SetFont (font);
timeTextLayer.SetFont (font);
font.Dispose ();
}
CATransaction.DisableActions = true;
textLayer.Bounds = new CGRect (new CGPoint (0, 0), size);
textLayer.Position = mainBar.Position;
timeTextLayer.Bounds = new CGRect (new CGPoint (0, 0), size);
timeTextLayer.Position = new CGPoint ( mainBar.Position.X + 5.0f, mainBar.Position.Y);
CATransaction.DisableActions = false;
return barLayer;
}