fix: terminate immediately when the line width is too small to display any characters (#1956)

Author: wang1212

.changeset/green-jobs-bathe.md

@@ -0,0 +1,5 @@
+---
+'@antv/g-lite': patch
+---
+
+fix: terminate immediately when the line width is too small to display any characters

__tests__/unit/display-objects/text.spec.ts

@@ -251,4 +251,22 @@ describe('Text', () => {
     text.style.wordWrap = false;
     expect(text.isOverflowing()).toBe(false);
   });
+
+  it('should terminate when line width is too small to display any character', async () => {
+    await canvas.ready;
+
+    const text = new Text({
+      style: {
+        text: '测试文本',
+        fontSize: 16,
+        wordWrap: true,
+        wordWrapWidth: 0,
+        maxLines: 3,
+      },
+    });
+    const lineRects = text.getLineBoundingRects();
+
+    expect(lineRects.length).toBe(1);
+    expect(text.isOverflowing()).toBe(true);
+  });
 });

packages/g-lite/src/services/TextService.ts

@@ -464,6 +464,17 @@ export class TextService {
         continue;
       }
 
+      // If current line is empty and char width exceeds max width, no need to continue
+      if (currentLineWidth === 0 && charWidth > maxWidth) {
+        // Only add ellipsis if it can fit in the line
+        if (ellipsis && ellipsisWidth <= maxWidth) {
+          lines[currentLineIndex] = ellipsis;
+        } else {
+          lines[currentLineIndex] = '';
+        }
+        parsedStyle.isOverflowing = true;
+        break;
+      }
       if (currentLineWidth > 0 && currentLineWidth + charWidth > maxWidth) {
         const result = findCharIndexClosestWidthThreshold(
           lines[currentLineIndex],