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1337skills 1337skills - チートシート

Excalidraw チートシート

## 概要

Excalidrawは、手描き風の図を簡単にスケッチできる仮想コラボレーティブホワイトボードツールです。ワイヤーフレーミング、ブレインストーミング、システム設計、そして複雑なアイデアをより親しみやすくする自然な、スケッチのような外観の技術的な図を作成するのに最適です。

⚠️ 注意: excalidraw.comで無料で使用可能。セルフホストオプションと統合機能も利用可能。

はじめに

アクセス方法

インターフェース概要

最初の描画

描画ツール

選択ツール

図形ツール

描画ツール

テキストツール

キーボードショートカット

ツール選択

編集ショートカット

キャンバスナビゲーション

スタイルとプロパティ

ストロークプロパティ

塗りつぶしプロパティ

テキストスタイリング

高度な機能

ライブラリとテンプレート

コラボレーション機能

エクスポートオプション

ユースケースとパターン

システムアーキテクチャ図

フローチャートとプロセス図

ワイヤーフレームとモックアップ

Would you like me to elaborate on any specific section or provide more detailed translations for the remaining sections?```bash

Web application:

Visit: https://excalidraw.com

No account required for basic use

Account optional for saving and collaboration

VS Code extension:

Install “Excalidraw” extension

Create .excalidraw files

Edit directly in VS Code

Self-hosted:

Clone from GitHub: https://github.com/excalidraw/excalidraw

Docker deployment available

Custom domain setup


### Interface Overview
```bash
# Main interface elements:
# - Canvas: Drawing area
# - Toolbar: Drawing tools and shapes
# - Properties panel: Styling options
# - Layers panel: Element organization
# - Library: Saved shapes and templates
# - Share menu: Collaboration options

First Drawing

# Basic workflow:
# 1. Select a tool from toolbar
# 2. Click and drag on canvas
# 3. Adjust properties (color, stroke, fill)
# 4. Add text labels
# 5. Arrange and group elements
# 6. Save or share your drawing

Drawing Tools

Selection Tool

# Selection modes:
# - Single click: Select one element
# - Drag: Select multiple elements
# - Ctrl/Cmd + A: Select all
# - Ctrl/Cmd + click: Add/remove from selection

# Selection actions:
# - Drag to move
# - Drag corners to resize
# - Drag rotation handle to rotate
# - Double-click text to edit

Shape Tools

# Rectangle tool:
# - Click and drag to create
# - Hold Shift for perfect square
# - Rounded corners available in properties

# Ellipse tool:
# - Click and drag to create
# - Hold Shift for perfect circle
# - Adjust stroke and fill properties

# Diamond tool:
# - Creates diamond/rhombus shapes
# - Useful for flowchart decision points
# - Adjustable proportions

Drawing Tools

# Pen tool:
# - Freehand drawing
# - Pressure-sensitive (on supported devices)
# - Adjustable stroke width
# - Smooth or rough style

# Line tool:
# - Straight lines
# - Hold Shift for horizontal/vertical
# - Adjustable endpoints (arrow, dot, bar)
# - Multiple line styles available

# Arrow tool:
# - Directional arrows
# - Curved or straight
# - Adjustable arrowheads
# - Perfect for flowcharts and diagrams

Text Tool

# Text creation:
# - Click to place text
# - Type to add content
# - Enter for new line
# - Escape to finish editing

# Text formatting:
# - Font family selection
# - Font size adjustment
# - Text alignment (left, center, right)
# - Text color customization

Keyboard Shortcuts

Tool Selection

# Drawing tools:
V                     # Selection tool
R                     # Rectangle
O                     # Ellipse  
D                     # Diamond
P                     # Pen/Draw
L                     # Line
A                     # Arrow
T                     # Text

# Quick actions:
Space + drag          # Pan canvas
Ctrl/Cmd + scroll     # Zoom in/out
Ctrl/Cmd + 0          # Zoom to fit
Ctrl/Cmd + 1          # Zoom to 100%

Editing Shortcuts

# Selection and manipulation:
Ctrl/Cmd + A          # Select all
Ctrl/Cmd + D          # Duplicate
Delete/Backspace      # Delete selected
Ctrl/Cmd + Z          # Undo
Ctrl/Cmd + Y          # Redo
Ctrl/Cmd + Shift + Z  # Redo (alternative)

# Grouping and layers:
Ctrl/Cmd + G          # Group selection
Ctrl/Cmd + Shift + G  # Ungroup
Ctrl/Cmd + ]          # Send to back
Ctrl/Cmd + [          # Bring to front
Ctrl/Cmd + Shift + ]  # Send backward
Ctrl/Cmd + Shift + [  # Bring forward

Canvas Navigation

# View controls:
Ctrl/Cmd + Plus       # Zoom in
Ctrl/Cmd + Minus      # Zoom out
Ctrl/Cmd + 0          # Fit to screen
Ctrl/Cmd + 1          # Actual size
Space + drag          # Pan canvas
Mouse wheel           # Zoom at cursor

# Grid and guides:
Ctrl/Cmd + '          # Toggle grid
Ctrl/Cmd + Shift + '  # Toggle snap to grid

Styling and Properties

Stroke Properties

# Stroke options:
# - Color: Full color picker
# - Width: 1-5 pixel options
# - Style: Solid, dashed, dotted
# - Roughness: 0 (smooth) to 2 (very rough)
# - Opacity: 0% to 100%

# Stroke styles:
# Architect: Clean, precise lines
# Artist: Hand-drawn, sketchy feel
# Cartoonist: Bold, expressive strokes

Fill Properties

# Fill options:
# - Transparent: No fill
# - Solid: Solid color fill
# - Hachure: Cross-hatched pattern
# - Cross-hatch: Denser cross-hatching
# - Dots: Dotted pattern

# Fill customization:
# - Color selection
# - Opacity adjustment
# - Pattern density
# - Background transparency

Text Styling

# Font options:
# - Virgil: Hand-drawn style (default)
# - Helvetica: Clean, modern
# - Cascadia: Monospace, code-friendly

# Text properties:
# - Size: 16px to 96px
# - Color: Full spectrum
# - Alignment: Left, center, right
# - Vertical alignment: Top, middle, bottom

Advanced Features

Libraries and Templates

# Using libraries:
# 1. Click library icon in toolbar
# 2. Browse available libraries
# 3. Click to add items to canvas
# 4. Customize as needed

# Creating custom libraries:
# 1. Select elements to save
# 2. Click "Add to library"
# 3. Name your library item
# 4. Reuse across drawings

# Popular libraries:
# - System design components
# - AWS architecture icons
# - Flowchart symbols
# - UI/UX wireframe elements

Collaboration Features

# Real-time collaboration:
# 1. Click "Share" button
# 2. Copy shareable link
# 3. Share with team members
# 4. Collaborate in real-time

# Collaboration features:
# - Live cursors showing other users
# - Real-time updates
# - Comment system
# - Version history
# - Conflict resolution

Export Options

# Export formats:
# - PNG: Raster image
# - SVG: Vector graphics
# - Excalidraw: Native format
# - JSON: Data format

# Export settings:
# - Background: Transparent or colored
# - Scale: 1x, 2x, 3x for high DPI
# - Selection only: Export selected elements
# - Include watermark: Optional branding

Use Cases and Patterns

System Architecture Diagrams

# Architecture components:
# - Rectangles: Services, databases
# - Ellipses: External systems
# - Arrows: Data flow, connections
# - Text: Labels and annotations

# Best practices:
# - Use consistent shapes for similar components
# - Group related elements
# - Use colors to indicate different layers
# - Add clear labels and descriptions
# - Show data flow direction with arrows

Flowcharts and Process Diagrams

# Flowchart symbols:
# - Rectangle: Process step
# - Diamond: Decision point
# - Ellipse: Start/end point
# - Parallelogram: Input/output
# - Circle: Connector

# Flowchart tips:
# - Start with high-level flow
# - Add detail progressively
# - Use consistent symbol meanings
# - Keep text concise
# - Test the logic flow

Wireframes and Mockups

# Wireframe elements:
# - Rectangles: Content areas, buttons
# - Lines: Dividers, borders
# - Text: Labels, content placeholders
# - Arrows: User flow, interactions

# Wireframe best practices:
# - Focus on layout, not visual design
# - Use grayscale colors
# - Include navigation elements
# - Show content hierarchy
# - Indicate interactive elements

Mind Maps and Brainstorming

# Mind map structure:
# - Central topic in center
# - Main branches radiating out
# - Sub-branches for details
# - Colors for categorization
# - Icons for visual interest

# Brainstorming techniques:
# - Start with central concept
# - Add ideas as they come
# - Group related concepts
# - Use colors and shapes for organization
# - Connect related ideas with lines

Integration and Embedding

VS Code Integration

# VS Code extension features:
# - Create .excalidraw files
# - Edit directly in editor
# - Version control integration
# - Preview mode
# - Export capabilities

# Workflow:
# 1. Install Excalidraw extension
# 2. Create new .excalidraw file
# 3. Edit with full Excalidraw features
# 4. Save and commit to version control

Obsidian Integration

# Obsidian plugin:
# - Embed drawings in notes
# - Link to other notes
# - Search within drawings
# - Template support

# Usage:
# 1. Install Excalidraw plugin
# 2. Create drawing in note
# 3. Link to other content
# 4. Export or embed as needed

Notion Integration

# Notion embedding:
# 1. Create drawing in Excalidraw
# 2. Export as PNG or SVG
# 3. Upload to Notion
# 4. Embed in page

# Live embedding:
# - Use Excalidraw share link
# - Embed as web content
# - Updates reflect automatically

API and Automation

Excalidraw Libraries API

// Load external library
const library = await fetch('https://libraries.excalidraw.com/libraries/your-library.excalidrawlib')
  .then(response => response.json());

// Add library items to scene
const libraryItems = library.libraryItems;
excalidrawAPI.updateScene({
  elements: [...currentElements, ...libraryItems]
});

Programmatic Drawing

// Create elements programmatically
const rectangle = {
  id: 'rect1',
  type: 'rectangle',
  x: 100,
  y: 100,
  width: 200,
  height: 100,
  strokeColor: '#000000',
  backgroundColor: '#ffffff',
  fillStyle: 'hachure',
  strokeWidth: 2,
  roughness: 1
};

const text = {
  id: 'text1',
  type: 'text',
  x: 150,
  y: 140,
  width: 100,
  height: 25,
  text: 'Hello World',
  fontSize: 16,
  fontFamily: 1,
  textAlign: 'center'
};

excalidrawAPI.updateScene({
  elements: [rectangle, text]
});

Batch Operations

// Batch create system diagram
function createSystemDiagram(services) {
  const elements = [];
  let x = 100;
  const y = 100;
  
  services.forEach((service, index) => {
    // Create service box
    elements.push({
      id: `service-${index}`,
      type: 'rectangle',
      x: x,
      y: y,
      width: 120,
      height: 80,
      strokeColor: '#1971c2',
      backgroundColor: '#e3f2fd'
    });
    
    // Create service label
    elements.push({
      id: `label-${index}`,
      type: 'text',
      x: x + 10,
      y: y + 30,
      text: service.name,
      fontSize: 14
    });
    
    x += 200;
  });
  
  return elements;
}

Performance and Optimization

Large Diagrams

# Performance tips:
# - Use groups to organize complex diagrams
# - Limit the number of elements on screen
# - Use simple shapes when possible
# - Avoid excessive text elements
# - Regular cleanup of unused elements

# Memory management:
# - Clear undo history periodically
# - Export and reload for very large diagrams
# - Use multiple smaller diagrams instead of one huge one

Collaboration Performance

# Collaboration optimization:
# - Limit concurrent users (5-10 optimal)
# - Use voice/video for complex discussions
# - Assign areas to different team members
# - Periodic saves to prevent data loss
# - Good internet connection required

Mobile Usage

Mobile Web App

# Mobile features:
# - Touch drawing support
# - Pinch to zoom
# - Two-finger pan
# - Touch selection
# - Mobile-optimized toolbar

# Mobile limitations:
# - Smaller screen real estate
# - Limited precision
# - No keyboard shortcuts
# - Simplified toolbar

Mobile Best Practices

# Mobile workflow:
# - Start with rough sketches
# - Focus on major elements first
# - Use larger shapes and text
# - Simplify complex diagrams
# - Refine on desktop later

Troubleshooting

Common Issues

# Performance problems:
# - Refresh browser tab
# - Clear browser cache
# - Reduce diagram complexity
# - Close other browser tabs
# - Check internet connection

# Collaboration issues:
# - Verify share link permissions
# - Check network connectivity
# - Refresh page for all users
# - Use incognito mode to test
# - Clear browser data

Data Recovery

# Auto-save features:
# - Local storage backup
# - Browser session recovery
# - Collaboration history
# - Export regular backups

# Recovery methods:
# - Check browser local storage
# - Use collaboration history
# - Restore from exported files
# - Contact support for shared rooms

Browser Compatibility

# Supported browsers:
# - Chrome (recommended)
# - Firefox
# - Safari
# - Edge

# Feature limitations:
# - Some features require modern browsers
# - WebGL support needed for performance
# - Local storage required for saving
# - WebRTC needed for collaboration

Best Practices

Design Principles

# Visual hierarchy:
# - Use size to show importance
# - Color for categorization
# - Spacing for grouping
# - Consistency in styling

# Clarity guidelines:
# - Keep text readable
# - Use sufficient contrast
# - Avoid clutter
# - Group related elements
# - Provide clear labels

Collaboration Guidelines

# Team workflow:
# - Establish drawing conventions
# - Use consistent naming
# - Assign ownership areas
# - Regular sync meetings
# - Version control for important diagrams

# Communication:
# - Use comments for feedback
# - Voice chat for complex discussions
# - Screen sharing for presentations
# - Clear action items
# - Document decisions

Organization Tips

# File management:
# - Use descriptive names
# - Organize by project/topic
# - Regular cleanup of old files
# - Export important diagrams
# - Backup critical work

# Version control:
# - Save major iterations
# - Use descriptive commit messages
# - Tag important versions
# - Branch for experiments
# - Merge carefully

Advanced Techniques

Custom Shapes and Libraries

# Creating reusable components:
# 1. Design component elements
# 2. Group related parts
# 3. Add to personal library
# 4. Share with team
# 5. Maintain consistency

# Library management:
# - Organize by category
# - Use clear naming conventions
# - Regular updates and maintenance
# - Documentation for complex components
# - Version control for shared libraries

Animation and Presentation

# Presentation techniques:
# - Use layers to reveal information
# - Create step-by-step diagrams
# - Export frames for animation
# - Use colors to highlight changes
# - Progressive disclosure of complexity

# Storytelling with diagrams:
# - Start with overview
# - Zoom into details
# - Show before/after states
# - Use annotations for context
# - Guide viewer attention

Resources

Documentation

コミュニティ

リソース

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