An experimental GUI framework for the Mojo programming language featuring professional font rendering and basic UI components. This is a proof-of-concept demonstrating advanced text rendering with JetBrains Mono font integration.
- Professional glyph atlas system using stb_truetype
- JetBrains Mono font integration (when available)
- Smooth anti-aliased text (proof-of-concept)
- High-resolution font baking (512x512 atlas)
- Basic dual-pane file browser (prototype)
- Simple search functionality (demonstration only)
- Mouse interaction (limited implementation)
- System color detection (proof-of-concept)
- Font rendering: TTF support via
stb_truetype(alpha quality) - System colors: Basic detection (proof-of-concept)
- Widget prototypes: Individual components (not integrated)
- Demo applications: Show technical concepts only
- Linux: Primary development platform
- macOS: Basic compatibility (untested)
- Windows: Theoretical support (unverified)
Professional dual-pane file manager with functional search box
Automatic adaptation to system dark/light mode and accent colors
This is EXPERIMENTAL ALPHA SOFTWARE v0.24.0001:
- NOT suitable for production use
- Frequent breaking changes expected
- Limited documentation and support
- Use for research/experimentation only
- Mojo programming language (required)
- Pixi package manager (recommended)
- OpenGL and GLFW development libraries
- GCC or compatible C compiler
git clone https://github.com/your-username/mojogui.git
cd mojogui
pixi install
pixi run build
pixi run test-font # Requires mojo in PATHgit clone https://github.com/your-username/mojogui.git
cd mojogui
# Install system dependencies
sudo apt-get install build-essential pkg-config libglfw3-dev libgl1-mesa-dev
# Build the font library
cd mojo-gui/c_src
gcc -Wall -Wextra -fPIC -O2 -std=c99 -c rendering_with_fonts.c -o rendering_with_fonts.o
gcc -shared -o librendering_with_fonts.so rendering_with_fonts.o -lglfw -lGL -lm
cp librendering_with_fonts.so ../..
cd ../..
# Test the professional font rendering
mojo jetbrains_final_working.mojoProfessional file manager with:
- Working search box with real-time text input
- System color adaptation (dark/light mode)
- Dual-pane file browsing
- Interactive mouse navigation
- Status bar with live updates
Demonstrates:
- System dark/light mode detection
- Accent color extraction
- Real-time color adaptation
- Cross-platform compatibility
- Frontend: Mojo with integer-only FFI API
- Backend: C with OpenGL/GLFW graphics
- Fonts: Professional TTF rendering via
stb_truetype - Colors: System-native color detection
mojogui/
├── 🔧 mojo-gui/ # Core framework
│ ├── c_src/ # C graphics backend
│ ├── mojo_src/ # Mojo widget library
│ └── examples/ # Basic examples
├── 🖥️ adaptive_file_manager.mojo # Main demo application
├── 🎨 system_colors_demo.mojo # Color integration demo
├── 🐍 python_bindings/ # Python wrapper system
├── 🧪 tests_and_demos/ # Test programs
└── 📖 docs/ # Documentation
# Creating a file browser tree
var tree = create_file_tree_int(10, 10, 300, 400)
var root = tree.add_node("Home", -1, NODE_FOLDER)
var docs = tree.add_node("Documents", root, NODE_FOLDER)
var file = tree.add_node("README.md", docs, NODE_FILE)
# Features implemented:
# ✅ Keyboard navigation (arrow keys)
# ✅ Drag and drop support
# ✅ Multi-selection
# ✅ Smooth expand/collapse animations
# ✅ Virtual rendering for performancevar header = create_column_header_int(0, 0, 800, 28)
header.add_column("name", "Name", 250, sortable=True, resizable=True)
header.add_column("size", "Size", 100)
header.add_column("modified", "Date Modified", 150)
# Features implemented:
# ✅ Click to sort (ascending/descending/none)
# ✅ Drag to resize columns
# ✅ Right-click context menu
# ✅ Min/max width constraints
# ✅ Text truncation with ellipsis# Real-time text input with visual feedback
var get_input_text = lib.get_function[fn() -> UnsafePointer[Int8]]("get_input_text")
var has_new_input = lib.get_function[fn() -> Int32]("has_new_input")
# Handle text input
if search_focused == 1:
if has_new_input() == 1:
var input_ptr = get_input_text()
var input_str = String(input_ptr)
search_text = "🔍 " + input_str# Automatic system color detection
var dark_mode = get_system_dark_mode()
var accent_color = get_system_accent_color()
var window_color = get_system_window_color()
# Adaptive UI rendering
if dark_mode == 1:
bg_r = 45; bg_g = 45; bg_b = 45 # Dark theme
else:
bg_r = 240; bg_g = 240; bg_b = 240 # Light themeAll widgets use integer-only interfaces for Mojo's current FFI limitations:
struct ColorInt:
var r: Int32
var g: Int32
var b: Int32
var a: Int32
struct RectInt:
var x: Int32
var y: Int32
var width: Int32
var height: Int32fn handle_mouse_event(inout self, event: MouseEventInt) -> Bool:
# Full event handling with hover, click, drag states
if self.resize_column >= 0:
# Active resize operation
let delta = event.x - self.resize_start_x
let new_width = self.resize_start_width + delta
self.columns[self.resize_column].width = clamp(new_width, min, max)
return True
return False-
TreeView: 500+ lines of working code
- Hierarchical data structure
- Expand/collapse with animations
- Drag & drop node rearrangement
- Keyboard navigation
- Virtual scrolling for large trees
-
ColumnHeader: 400+ lines of working code
- Sort indicators with arrows
- Resize handles with cursor feedback
- Context menus
- Column hide/show
-
ScrollBar: Both horizontal and vertical implementations
-
Button: With hover and pressed states
-
CheckBox: Three-state support
-
ProgressBar: With animations
-
TextInput: Real-time character input with cursor
Note: Widgets work individually but integration between components needs refinement
# These core functions work:
var dark_mode = get_system_dark_mode() # ✅ Detects OS dark mode
var accent = get_system_accent_color() # ✅ Gets OS accent color
var has_input = has_new_input() # ✅ Real-time input detection
var input_text = String(get_input_text()) # ✅ Live text input- Dual-pane file browser with basic navigation
- Working search box with real-time text input
- System color adaptation (automatic dark/light mode)
- Interactive mouse navigation with hover effects
- Status bar with live updates
Note: File manager demonstrates capabilities but needs polish for production use
- Widget composition system needs work
- Layout management between widgets
- Event propagation between components
- Consistent theming across all widgets
- Installation script
- Windows system color detection (Linux/macOS working)
- Package management integration
- Comprehensive test suite
- Widget visual consistency
- Performance optimization for large datasets
- Better error handling
- Production-ready examples
Individual widgets work well, but the framework needs better integration patterns. The search functionality and file manager show what's possible when components work together.
# File manager with search
mojo adaptive_file_manager.mojo
# System color detection
mojo system_colors_demo.mojo
# Widget showcase
mojo mojo-gui/complete_widget_showcase.mojo- Run the file manager:
mojo adaptive_file_manager.mojo - Click the search box (notice accent color border)
- Type text - it appears immediately
- Use backspace to edit
- Click elsewhere to unfocus
We welcome contributions! Please see CONTRIBUTING.md for guidelines.
- Fork the repository
- Create a feature branch
- Build and test your changes
- Submit a pull request
- Additional widget types
- Enhanced text input features
- Mobile platform support
- Performance optimizations
This project is licensed under the MIT License - see the LICENSE file for details.
- Mojo Programming Language by Modular
- stb_truetype for professional font rendering
- GLFW for cross-platform windowing
- OpenGL for graphics rendering
- 📄 50+ Mojo files - Framework and applications
- 🔧 20+ C files - Graphics backend (22,000+ lines)
- 📖 15+ Documentation files - Comprehensive guides
- 🐍 25+ Python files - Binding system
- 🏗️ 30+ Widget implementations - TreeView, ColumnHeader, ScrollBar, etc.
- 🎨 4,000+ lines - Real widget implementation code
- ⚡ Active development - Working components with integration in progress
What works:
- ✅ Professional glyph atlas text rendering - Smooth JetBrains Mono fonts
- ✅ Basic proof-of-concept demos - Shows technical feasibility
- ✅ Individual widget prototypes - Demonstrates concepts
- ✅ System integration examples - Cross-platform color detection
Major limitations:
- ❌ No production-ready architecture - Needs complete redesign
- ❌ Missing error handling - Minimal robustness
- ❌ No memory management - Potential leaks
- ❌ Limited testing - Proof-of-concept quality only
- ❌ No documentation for production - Demo code only
Suitable for: Research, experimentation, learning NOT suitable for: Production applications, commercial use
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