Vellum (Under Development)

Extremely lightweight vector note-taking for Linux (Qt6). Vellum features smooth ink rendering, infinite and A4-notebook canvas modes, automatic geometric shape recognition, and SQLite-based persistence.

Features

• Vector-based Ink: Pressure-sensitive strokes with smooth Join/Cap styles.
• Shape Recognition: Automatically transforms hand-drawn strokes into perfect lines, circles, and rectangles.
• Smart Storage: Fast, transactional saving using a localized SQLite database.
• PDF Export: High-fidelity export to A4-paginated PDF documents.

Installation & Build

.deb file Available

For instant use, download the /build/vellum-1.0.0-Linux.deb file on your system and install with your software installer.

1. Install Dependencies

You will need a C++17 compatible compiler, CMake, and the Qt6 development libraries.

Ubuntu/Debian:

sudo apt-get update
sudo apt-get install -y \
    cmake \
    g++ \
    qt6-base-dev \
    qt6-base-dev-tools \
    libqt6sql6-sqlite \
    qt6-pdf-dev \
    qt6-printsupport-dev

2. Build the Project

Using CMake, generate the build files and compile the executable:

# Configure the build
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release

# Compile using all available cores
cmake --build build -j$(nproc)

3. Run Vellum

./build/vellum

Project Structure

• src/model/: Core data structures (Strokes, TextBoxes) and the Command pattern logic.
• src/canvas/: The custom Qt6 Widget for low-latency ink rendering.
• src/storage/: SQLite backend for document persistence.
• src/shapes/: Heuristic-based geometric shape recognizer.
• src/export/: PDF generation logic using QPdfWriter.

Contributions

This is a open source project and you are welcome to make contributions.