#atom

Subtitle:

The core rendering component for displaying PDF documents in React applications

Core Idea:

The Viewer component renders PDF documents from various sources with customizable behaviors, appearance, and interactive features, serving as the primary interface between users and PDF content.

Key Principles:

1. Flexible Document Sources:
   • Accepts documents via URL, base64 string, or byte array
2. Customizable Rendering:
   • Provides numerous props for tailoring the viewing experience
3. Event-Driven Architecture:
   • Exposes callbacks for document loading, page changes, and user interactions

Why It Matters:

• Content Accessibility:
  • Makes PDF documents easily accessible within web applications
• Integration Simplicity:
  • Requires minimal configuration for basic implementation
• Interaction Capabilities:
  • Enables users to navigate, zoom, and interact with documents intuitively

How to Implement:

1. Basic Setup:
   • Import the Viewer component and styles
   • Provide a document source via fileUrl prop
   • Set container dimensions
2. Customize Appearance:
   • Configure theme, scroll mode, and view mode
   • Implement custom renderers for specific elements
3. Handle Events:
   • Attach event handlers for document loading, page changes, etc.

Example:

• Scenario:
  • Implementing a viewer with loading progress indicator and page change tracking
• Application:

import { Viewer, ProgressBar } from '@react-pdf-viewer/core';
import '@react-pdf-viewer/core/lib/styles/index.css';

const PdfDisplay = () => (
  <div style={{ height: '750px' }}>
    <Viewer
      fileUrl="/sample-document.pdf"
      renderLoader={(percentages) => (
        <div style={{ width: '240px' }}>
          <ProgressBar progress={Math.round(percentages)} />
        </div>
      )}
      onPageChange={(e) => console.log(`Current page: ${e.currentPage + 1}`)}
    />
  </div>
);

• Result:
  • A PDF viewer with custom loading indicator and console logging for page changes

Connections:

• Related Concepts:
  • 05 - Permanent/Atoms/React PDF Viewer Core: The foundation package containing the Viewer component
  • React PDF Viewer Worker Component: Required companion component for PDF processing
  • Custom Loading UI: Techniques for customizing the document loading experience
• Broader Concepts:
  • React Component Props: Method of configuration for React components
  • Event Handling: Patterns for responding to user interactions and system events

References:

1. Primary Source:
   • React PDF Viewer Documentation
2. Additional Resources:
   • React Component Documentation: https://reactjs.org/docs/components-and-props.html
   • PDF.js Documentation: https://mozilla.github.io/pdf.js/

Tags:

#react #pdf #viewer #component #rendering #document-viewer #fileUrl

Connections:

Sources:

• From: Version1