Screen Resolution Display View your current screen resolution, viewport size, device pixel ratio, and display information.

The tool works by accessing various browser APIs to gather information about the device's display settings. It reads properties from the window.screen object, such as width and height, to determine the screen resolution. Additionally, it accesses properties from the window object, including innerWidth, innerHeight, and devicePixelRatio, to calculate the viewport dimensions and device pixel ratio. The screen.colorDepth property is used to retrieve the color depth of the display, while screen.orientation.type provides information about the current orientation.

The tool utilizes the React library, specifically the useState and useEffect hooks, to manage state and handle side effects. The useEffect hook is used with a resize listener to update the display settings in real-time when the user resizes the window or rotates their device. This allows for precise testing of different orientations and screen sizes. The gcd function, which calculates the greatest common divisor of two numbers, is used to determine the aspect ratio of the screen resolution.

The tool's data structure consists of a ScreenInfo interface, which defines properties such as screenWidth, screenHeight, viewportWidth, viewportHeight, devicePixelRatio, colorDepth, orientation, aspectRatio, physicalWidth, and physicalHeight. This interface provides a clear and organized way to store and access the display settings information. The use of TypeScript ensures that the code is type-safe and maintainable.

The viewport visualization feature uses CSS styles to overlay the current viewport dimensions on top of the total screen size, providing a clear understanding of the available screen space. The aspectRatio property is calculated using the gcd function and is displayed in the format "width:height". The physicalWidth and physicalHeight properties are calculated by multiplying the screenWidth and screenHeight with the devicePixelRatio, respectively.

The tool updates its values in real-time when the user resizes the window or rotates their device, allowing for precise testing of different orientations and screen sizes. This is achieved through the use of the resize event listener, which triggers the update function whenever the window is resized. The update function recalculates the display settings and updates the state accordingly.

The React library's JSX syntax is used to render the display settings information in a user-friendly format. The tool uses a combination of HTML elements, such as div and p, to structure the content, and CSS styles to control the layout and appearance. The glass-card class is used to apply a consistent design style to the components.

The tool's code is written in TypeScript, which provides type safety and maintainability features. The use of interfaces, such as ScreenInfo, ensures that the code is well-organized and easy to understand. The tool's functionality is achieved through a combination of React hooks, browser APIs, and CSS styles, making it a powerful and flexible solution for displaying device display settings information.