resizeTextBox method
Resizes a text box based on the delta values and ensures the width/height do not shrink below a threshold.
Implementation
void resizeTextBox(TextBox textBox, Offset delta) {
textBox.width += delta.dx;
textBox.height += delta.dy;
textBox.width = textBox.width.clamp(
20,
double.infinity,
); // Min width of 20.
textBox.height = textBox.height.clamp(
20,
double.infinity,
); // Min height of 20.
notifyListeners(); // Notify listeners after resizing.
}