From dd6ca460280617a0a9fefa2f5141111dec82a63b Mon Sep 17 00:00:00 2001
From: Rob Napier <rob@neverwood.org>
Date: Sun, 5 Jan 2020 18:08:13 -0500
Subject: [PATCH] Support typographicBounds in demo

---
 PathText/Sources/PathText/LayoutManager.swift | 5 +++++
 PathText/Sources/PathText/UIKit.swift         | 5 +++++
 PathTextDemo/ViewController.swift             | 2 +-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/PathText/Sources/PathText/LayoutManager.swift b/PathText/Sources/PathText/LayoutManager.swift
index fc2c15e..a7aff30 100644
--- a/PathText/Sources/PathText/LayoutManager.swift
+++ b/PathText/Sources/PathText/LayoutManager.swift
@@ -22,6 +22,11 @@ struct PathTextLayoutManager {
         }
     }
 
+    public var typographicBounds: CGRect {
+        // FIXME: ensureLayout? Maybe pre-calculate this?
+        glyphRuns.reduce(.null) { $0.union($1.typographicBounds) }
+    }
+
     mutating func ensureGlyphs() {
         if needsGlyphGeneration { updateGlyphRuns() }
     }
diff --git a/PathText/Sources/PathText/UIKit.swift b/PathText/Sources/PathText/UIKit.swift
index 685e3ae..878cedb 100644
--- a/PathText/Sources/PathText/UIKit.swift
+++ b/PathText/Sources/PathText/UIKit.swift
@@ -59,5 +59,10 @@ public class PathTextView: UIView {
         context.textMatrix = CGAffineTransform(scaleX: 1, y: -1)
         layoutManager.draw(in: context)
     }
+
+    public var typographicBounds: CGRect {
+        layoutManager.ensureLayout()
+        return layoutManager.typographicBounds
+    }
 }
 #endif
diff --git a/PathTextDemo/ViewController.swift b/PathTextDemo/ViewController.swift
index 93f4b18..5340aab 100644
--- a/PathTextDemo/ViewController.swift
+++ b/PathTextDemo/ViewController.swift
@@ -53,7 +53,7 @@ class ViewController: UIViewController {
         var tightFrame = frame
         tightFrame.origin.y = 400
         let tightTextView = PathTextView(frame: tightFrame, text: text, path: path)
-        tightTextView.sizeToFit()
+        tightTextView.bounds = tightTextView.typographicBounds
         tightTextView.layer.borderColor = UIColor.red.cgColor
         tightTextView.layer.borderWidth = 1
         view.addSubview(tightTextView)