description

# containsRectangle method Null safety

bool containsRectangle (

1. Rectangle<num> another

)
inherited

Tests whether `this` entirely contains `another`.

## Implementation

    bool containsRectangle(Rectangle<num> another) {
      return left <= another.left &&
          left + width >= another.left + another.width &&
          top <= another.top &&
          top + height >= another.top + another.height;
    }