Merge pull request ChartsOrg#3199 from jjatie/no-data-text-alignment

Added custom text alignment for noData
FreddyZeng · Jan 25, 2018 · 056e0e5 · 056e0e5
2 parents 9a1838a + c42ffe3
commit 056e0e5
Showing 1 changed file with 13 additions and 4 deletions.
diff --git a/Source/Charts/Charts/ChartViewBase.swift b/Source/Charts/Charts/ChartViewBase.swift
@@ -87,7 +87,10 @@ open class ChartViewBase: NSUIView, ChartDataProvider, AnimatorDelegate
 
     /// color of the no data text
     @objc open var noDataTextColor: NSUIColor = NSUIColor.black
-
+
+    /// alignment of the no data text
+    open var noDataTextAlignment: NSTextAlignment = .left
+
     internal var _legendRenderer: LegendRenderer!
 
     /// object responsible for rendering the data
@@ -309,14 +312,20 @@ open class ChartViewBase: NSUIView, ChartDataProvider, AnimatorDelegate
         {
             context.saveGState()
             defer { context.restoreGState() }
-
+
+            let paragraphStyle = NSMutableParagraphStyle.default.mutableCopy() as! NSMutableParagraphStyle
+            paragraphStyle.minimumLineHeight = noDataFont.lineHeight
+            paragraphStyle.lineBreakMode = .byWordWrapping
+            paragraphStyle.alignment = noDataTextAlignment
+
             ChartUtils.drawMultilineText(
                 context: context,
                 text: noDataText,
                 point: CGPoint(x: frame.width / 2.0, y: frame.height / 2.0),
                 attributes:
-                [NSAttributedStringKey.font: noDataFont,
-                 NSAttributedStringKey.foregroundColor: noDataTextColor],
+                [.font: noDataFont,
+                 .foregroundColor: noDataTextColor,
+                 .paragraphStyle: paragraphStyle],
                 constrainedToSize: self.bounds.size,
                 anchor: CGPoint(x: 0.5, y: 0.5),
                 angleRadians: 0.0)