Adds support for text centering

mustiikhalil · Aug 24, 2022 · 42a8bb2 · 42a8bb2
1 parent ece857b
commit 42a8bb2
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Showing 3 changed files with 30 additions and 7 deletions.
diff --git a/Sources/LCLabel/LCLabel.docc/Resources/__snapshots__/testCenterTextAlignment.1.png b/Sources/LCLabel/LCLabel.docc/Resources/__snapshots__/testCenterTextAlignment.1.png
diff --git a/Sources/LCLabel/LCLabel.swift b/Sources/LCLabel/LCLabel.swift
@@ -238,21 +238,21 @@ final public class LCLabel: UILabel {
       "The new bounds are negative with isnt allowed, check the frame or the textInsets")
     textContainer.size = newBounds.size
     layoutManager.ensureLayout(for: textContainer)
-    let calculatedValues = layoutManager.usedRect(for: textContainer)
+    let drawableFrame = layoutManager.usedRect(for: textContainer)
     switch centeringTextAlignment {
     case .center:
       newBounds.origin
-        .y = floor((newBounds.height - calculatedValues.height) / 2)
+        .y = floor((newBounds.height - drawableFrame.height) / 2)
     case .bottom:
-      newBounds.origin.y = (newBounds.height - calculatedValues.height)
+      newBounds.origin.y = (newBounds.height - drawableFrame.height)
     case .top:
       break
     }
     return CGRect(
-      x: newBounds.origin.x,
-      y: newBounds.origin.y,
-      width: calculatedValues.width,
-      height: calculatedValues.height)
+      x: newBounds.origin.x + drawableFrame.origin.x,
+      y: newBounds.origin.y + drawableFrame.origin.y,
+      width: drawableFrame.width,
+      height: drawableFrame.height)
   }
 
   // MARK: Private

diff --git a/Tests/LCLabelTests/LCLabelTests.swift b/Tests/LCLabelTests/LCLabelTests.swift
@@ -31,6 +31,29 @@ final class LCLabelTests: XCTestCase {
     XCTFail(message)
   }
 
+  func testCenterTextAlignment() {
+    let paragraph = NSMutableParagraphStyle()
+    paragraph.alignment = .center
+
+    let attStr = NSMutableAttributedString(
+      string: "LCLabel is a low cost label",
+      attributes: [
+        .foregroundColor: UIColor.white,
+        .font: UIFont.systemFont(ofSize: 14),
+        .paragraphStyle: paragraph,
+      ])
+    let label = createLabel(
+      text: attStr,
+      frame: CGRect(x: 0, y: 0, width: 300, height: 40))
+    label.numberOfLines = 1
+    let failure = verifySnapshot(
+      matching: label,
+      as: .image,
+      snapshotDirectory: path)
+    guard let message = failure else { return }
+    XCTFail(message)
+  }
+
   func testTextTopAlignment() {
     let attStr = NSMutableAttributedString(
       string: "LCLabel is a low cost label",