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# PyWebLayout Examples
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This directory contains example scripts demonstrating the pyWebLayout library.
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## Getting Started Examples
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These examples demonstrate the core rendering capabilities of pyWebLayout:
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### 01. Simple Page Rendering
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**`01_simple_page_rendering.py`** - Introduction to the Page system
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```bash
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python 01_simple_page_rendering.py
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```
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Demonstrates:
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- Creating pages with different styles
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- Setting borders, padding, and backgrounds
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- Understanding page layout structure
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- Basic rendering to images
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### 02. Text and Layout
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**`02_text_and_layout.py`** - HTML parsing and text rendering
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```bash
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python 02_text_and_layout.py
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```
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Demonstrates:
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- Parsing HTML content
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- Text alignment options
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- Font sizes and styles
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- Document structure
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### 03. Page Layouts
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**`03_page_layouts.py`** - Different page configurations
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```bash
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python 03_page_layouts.py
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```
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Demonstrates:
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- Various page sizes (portrait, landscape, square)
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- Different aspect ratios
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- Border and padding variations
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- Color schemes
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### 04. Table Rendering
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**`04_table_rendering.py`** - HTML table rendering with styling
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```bash
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python 04_table_rendering.py
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```
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Demonstrates:
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- Rendering HTML tables
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- Table headers and body rows
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- Cell borders and padding
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- Caption support
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- Custom table styling
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### 05. Tables with Images
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**`05_html_table_with_images.py`** - Tables containing images and mixed content
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```bash
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python 05_html_table_with_images.py
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```
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Demonstrates:
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- Creating tables programmatically
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- Adding images to table cells
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- Book catalog and product showcase tables
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- Mixed content (images and text) in cells
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- Using cover images from test data
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- HTML table parsing with `<img>` tags
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### 06. Functional Elements (Interactive)
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**`06_functional_elements_demo.py`** - Interactive buttons and forms with callbacks
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```bash
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python 06_functional_elements_demo.py
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```
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Demonstrates:
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- Creating interactive buttons
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- Building forms with multiple field types
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- Post-layout callback binding
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- CallbackRegistry system for managing interactables
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- Accessing application state from callbacks
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- Batch callback operations
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- Simulating user interactions
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### 07. Button Pressed States (Interactive)
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**`07_pressed_state_demo.py`** - Visual feedback for button interactions
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```bash
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python 07_pressed_state_demo.py
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```
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Demonstrates:
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- Button pressed/released state management
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- Visual feedback timing (150ms press duration)
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- Automatic interaction handling with `InteractionHandler`
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- Manual state management for custom event loops
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- Dirty flag system for optimized re-rendering
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- State tracking with `InteractionStateManager`
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*Animated GIF showing button press sequence: initial → pressed → released*
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---
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## 🆕 New Examples (2024-11)
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These examples address critical coverage gaps and demonstrate advanced features:
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### 08. Bundled Fonts Showcase
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**`08_bundled_fonts_demo.py`** - Demonstration of all bundled fonts
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```bash
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python 08_bundled_fonts_demo.py
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```
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Demonstrates:
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- DejaVu Sans (Sans-serif)
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- DejaVu Serif (Serif)
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- DejaVu Sans Mono (Monospace)
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- All font variants: Regular, Bold, Italic, Bold Italic
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### 08. Pagination with PageBreak ✅
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**`08_pagination_demo.py`** - Multi-page documents with explicit and automatic pagination
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```bash
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python 08_pagination_demo.py
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```
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**Test Coverage:** [tests/examples/test_08_pagination_demo.py](../tests/examples/test_08_pagination_demo.py) - 11 tests
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Demonstrates:
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- Using `PageBreak` to force content onto new pages
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- Multi-page document layout with explicit breaks
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- Automatic pagination when content overflows
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- Page numbering functionality
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- Document flow control
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- Combining pages into vertical strips
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**Coverage Impact:** Fills critical gap - PageBreak layouter had NO examples before this!
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### 09. Link Navigation (NEW) ✅
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**`09_link_navigation_demo.py`** - All link types and interactive navigation
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```bash
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python 09_link_navigation_demo.py
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```
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**Test Coverage:** [tests/examples/test_09_link_navigation_demo.py](../tests/examples/test_09_link_navigation_demo.py) - 10 tests
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Demonstrates:
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- **Internal links** - Document navigation (`#section1`, `#section2`)
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- **External links** - Web URLs (`https://example.com`)
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- **API links** - API endpoints (`/api/settings`, `/api/save`)
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- **Function links** - Direct function calls (`calculate()`, `process()`)
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- Link styling (underlined, color-coded by type)
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- Link callbacks and interactivity
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- Mixed text and link paragraphs
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**Coverage Impact:** Comprehensive - All 4 LinkType variations demonstrated!
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### 10. Comprehensive Forms (NEW) ✅
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**`10_forms_demo.py`** - All 14 form field types with validation
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```bash
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python 10_forms_demo.py
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```
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**Test Coverage:** [tests/examples/test_10_forms_demo.py](../tests/examples/test_10_forms_demo.py) - 9 tests
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Demonstrates all 14 FormFieldType variations:
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**Text-Based Fields:**
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- TEXT, EMAIL, PASSWORD, URL, TEXTAREA
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**Number/Date/Time Fields:**
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- NUMBER, DATE, TIME, RANGE, COLOR
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**Selection Fields:**
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- CHECKBOX, RADIO, SELECT, HIDDEN
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**Coverage Impact:** Complete - All 14 field types across 4 practical form examples!
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### 11. Table Text Wrapping (NEW) ✅
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**`11_table_text_wrapping_demo.py`** - Automatic line wrapping in table cells
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```bash
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python 11_table_text_wrapping_demo.py
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```
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**Simple Version:** `11b_simple_table_wrapping.py` - Quick demonstration
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Demonstrates:
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- **Automatic line wrapping** - Text wraps across multiple lines within cells
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- **Word hyphenation** - Long words are intelligently hyphenated
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- **Narrow columns** - Aggressive wrapping for tight spaces
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- **Mixed content** - Both short and long text in the same table
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- **Technical documentation** - API reference style tables
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- **News layouts** - Article-style table content
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**Implementation:** Uses the Line class from `pyWebLayout.concrete.text` with:
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- Word-by-word fitting with intelligent spacing
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- Pyphen-based dictionary hyphenation
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- Brute-force splitting for edge cases
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- Proper baseline alignment and metrics
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---
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## Running the Examples
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All examples can be run directly from the examples directory:
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```bash
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cd examples
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# Getting Started (01-07)
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python 01_simple_page_rendering.py # Page layouts
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python 02_text_and_layout.py # Text alignment with justified text
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python 03_page_layouts.py # Various page sizes
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python 04_table_rendering.py # Table styles
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python 05_html_table_with_images.py # HTML tables with images
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python 06_functional_elements_demo.py # Interactive buttons and forms
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python 07_pressed_state_demo.py # Button pressed states (generates GIF)
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# Advanced Features (08-11)
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python 08_bundled_fonts_demo.py # Bundled font showcase
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python 08_pagination_demo.py # Multi-page documents
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python 09_link_navigation_demo.py # All link types
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python 10_forms_demo.py # All form field types
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python 11_table_text_wrapping_demo.py # Table text wrapping
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python 11b_simple_table_wrapping.py # Simple wrapping demo
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```
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Output images are saved to the `docs/images/` directory.
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## Recent Improvements
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### ✅ Justified Text Fix (2024-11-10)
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Lines using justified alignment now properly fill the entire width by:
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- Calculating base spacing and remainder pixels
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- Distributing remainder across word gaps to eliminate short lines
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- Removing max_spacing constraint for true justification
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**Affected examples:** 02, 11, 11b - All text now perfectly justified!
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### ✅ Animated Button States (2024-11-10)
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Example 07 now automatically generates an animated GIF showing button interactions:
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- Initial state (1000ms)
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- Pressed state (200ms)
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- Released state (500ms)
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- Loops continuously
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**Output:** `docs/images/example_07_button_animation.gif`
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### Running Tests
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All new examples (08, 09, 10) include comprehensive test coverage:
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```bash
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# Run all example tests
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python -m pytest tests/examples/ -v
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# Run specific test file
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python -m pytest tests/examples/test_08_pagination_demo.py -v
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python -m pytest tests/examples/test_09_link_navigation_demo.py -v
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python -m pytest tests/examples/test_10_forms_demo.py -v
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```
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**Total Test Coverage:** 30 tests (11 + 10 + 9), all passing ✅
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## Additional Documentation
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- `README_HTML_MULTIPAGE.md` - HTML multi-page rendering guide
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- `../ARCHITECTURE.md` - Detailed explanation of the Abstract/Concrete architecture
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- `../docs/images/README.md` - Visual documentation index with all examples
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- `../pyWebLayout/layout/README_EREADER_API.md` - EbookReader API reference
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## Debug/Development Scripts
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Low-level debug and rendering scripts have been moved to the `scripts/` directory.
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