feat(android): lineCount/visibleText for Ti.UI.Label (#13583)

* feat(android): lineCount/visibleText for Ti.UI.Label * readme * Update apidoc/Titanium/UI/Label.yml * feat(ios): add lineCount --------- Co-authored-by: Hans Knöchel <h.knoechel@lambus.com>
tidev · Jan 1, 2024 · 1eeb301 · 1eeb301
1 parent abdc7bf
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diff --git a/android/modules/ui/src/java/ti/modules/titanium/ui/LabelProxy.java b/android/modules/ui/src/java/ti/modules/titanium/ui/LabelProxy.java
@@ -60,6 +60,26 @@ protected KrollDict getLangConversionTable()
 		return table;
 	}
 
+	@Kroll.getProperty
+	public int getLineCount()
+	{
+		TiUIView v = getOrCreateView();
+		if (v instanceof TiUILabel) {
+			return ((TiUILabel) v).getLineCount();
+		}
+		return 0;
+	}
+
+	@Kroll.getProperty
+	public String getVisibleText()
+	{
+		TiUIView v = getOrCreateView();
+		if (v instanceof TiUILabel) {
+			return ((TiUILabel) v).getVisibleText();
+		}
+		return "";
+	}
+
 	@Override
 	public TiUIView createView(Activity activity)
 	{

diff --git a/android/modules/ui/src/java/ti/modules/titanium/ui/widget/TiUILabel.java b/android/modules/ui/src/java/ti/modules/titanium/ui/widget/TiUILabel.java
@@ -799,4 +799,16 @@ private void updateLabelText()
 		textView.setText(text, MaterialTextView.BufferType.NORMAL);
 		textView.requestLayout();
 	}
+
+	public int getLineCount()
+	{
+		MaterialTextView textView = (MaterialTextView) getNativeView();
+		return textView.getLineCount();
+	}
+
+	public String getVisibleText()
+	{
+		MaterialTextView textView = (MaterialTextView) getNativeView();
+		return textView.getLayout().getText().toString();
+	}
 }
diff --git a/apidoc/Titanium/UI/Label.yml b/apidoc/Titanium/UI/Label.yml
@@ -175,6 +175,12 @@ properties:
     type: Number
     since: "4.1.0"
 
+  - name: lineCount
+    summary: Returns the amount of lines the content is acually using. Is equal or lower than `maxLines`.
+    type: Number
+    permission: read-only
+    since: "12.3.0"
+
   - name: lineSpacing
     summary: Line spacing of the [text](Titanium.UI.Label.text), as a dictionary with the properties `add` and `multiply`.
     platforms: [android]
@@ -247,6 +253,13 @@ properties:
     description: Only one of `text` or `textid` should be specified.
     type: String
 
+  - name: visibleText
+    summary: Returns the actual text seen on the screen. If the text is ellipsized it will be different to the normal `text`.
+    platforms: [android]
+    type: String
+    permission: read-only
+    since: {android: "12.3.0"}
+
   - name: wordWrap
     summary: Enable or disable word wrapping in the label.
     type: Boolean

diff --git a/iphone/Classes/TiUILabelProxy.m b/iphone/Classes/TiUILabelProxy.m
@@ -86,6 +86,23 @@ - (NSNumber *)ellipsize
   return NUMINTEGER([[(TiUILabel *)[self view] label] lineBreakMode]);
 }
 
+- (NSNumber *)lineCount
+{
+  UILabel *label = [(TiUILabel *)[self view] label];
+
+  CGSize maxSize = CGSizeMake(label.frame.size.width, MAXFLOAT);
+  NSString *text = label.text ?: @"";
+  CGFloat textHeight = [text boundingRectWithSize:maxSize
+                                          options:NSStringDrawingUsesLineFragmentOrigin
+                                       attributes:@{ NSFontAttributeName : label.font }
+                                          context:nil]
+                           .size.height;
+  CGFloat lineHeight = label.font.lineHeight;
+  NSNumber *lineCount = NUMINT(ceil(textHeight / lineHeight));
+
+  return lineCount;
+}
+
 @end
 
 #endif