Design Tools Showcase

Overview

Konva is a 2D canvas library that enables high-performance drawing and animation. react-konva provides React components for easy integration.

✅ React integration via react-konva

✅ High performance with canvas rendering

✅ Event handling (click, drag, hover)

✅ Animations and transformations

Interactive Examples

1. Basic Shapes

Rectangle, circle, and star with different colors and properties

Hover over the blue rectangle to see color change

2. Draggable Elements

Drag the circle to move it around the canvas

3. Rotation & Animation

Click the star to rotate it

Current rotation: 0°

4. Text Rendering

Konva supports text rendering with various styling options. Edit the text below:

First Text:

Second Text:

5. Transform with Handles (Rotate & Resize)

Click on a shape to select it, then use the handles to rotate and resize

Click on a shape to select it

6. Layer Management (Reordering)

Control the stacking order of shapes with layer management controls

Selected Shape: None

Layer Order (bottom to top):

rect1 (rect)
circle1 (circle)
star1 (star)

7. Export Canvas (Multiple Sizes)

Export the canvas at different resolutions for preview and print

Preview export is at 1x scale (web quality), Print export is at 3x scale (high resolution)

8. Export Canvas as JSON

Dump the full canvas state to JSON, including shapes and image references

Konva serialises shape attributes to JSON; image src is added as a custom attribute since HTMLImageElement is not JSON-serialisable

Evaluation Summary

Usability

★★★★☆

React-friendly API with intuitive component structure. Good documentation.

Performance

★★★★★

Excellent performance with canvas rendering. Handles many objects smoothly.

Features