Method render

packages/pi-tui/src/components/text.ts:45–105

(width: number)

	}

	render(width: number): string[] {
		// Check cache
		if (this.cachedLines && this.cachedText === this.text && this.cachedWidth === width) {
			return this.cachedLines;
		}

		// Don't render anything if there's no actual text
		if (!this.text || this.text.trim() === "") {
			const result: string[] = [];
			this.cachedText = this.text;
			this.cachedWidth = width;
			this.cachedLines = result;
			return result;
		}

		// Replace tabs with 3 spaces
		const normalizedText = this.text.replace(/\t/g, "   ");

		// Calculate content width (subtract left/right margins)
		const contentWidth = Math.max(1, width - this.paddingX * 2);

		// Wrap text (this preserves ANSI codes but does NOT pad)
		const wrappedLines = wrapTextWithAnsi(normalizedText, contentWidth);

		// Add margins and background to each line
		const leftMargin = " ".repeat(this.paddingX);
		const rightMargin = " ".repeat(this.paddingX);
		const contentLines: string[] = [];

		for (const line of wrappedLines) {
			// Add margins
			const lineWithMargins = leftMargin + line + rightMargin;

			// Apply background if specified (this also pads to full width)
			if (this.customBgFn) {
				contentLines.push(applyBackgroundToLine(lineWithMargins, width, this.customBgFn));
			} else {
				// No background - just pad to width with spaces
				const visibleLen = visibleWidth(lineWithMargins);
				const paddingNeeded = Math.max(0, width - visibleLen);
				contentLines.push(lineWithMargins + " ".repeat(paddingNeeded));
			}
		}

		// Add top/bottom padding (empty lines)
		const emptyLine = " ".repeat(Math.max(0, width));
		const emptyLines: string[] = [];
		for (let i = 0; i < this.paddingY; i++) {
			const line = this.customBgFn ? applyBackgroundToLine(emptyLine, width, this.customBgFn) : emptyLine;
			emptyLines.push(line);
		}

		const result = [...emptyLines, ...contentLines, ...emptyLines];

		// Update cache
		this.cachedText = this.text;
		this.cachedWidth = width;
		this.cachedLines = result;