Micro Vector Graphics Editor

A lightweight vector graphics editor built with C++17 and the Qt5 framework. This application allows users to create, view, and modify vector graphics with various shapes and tools.

Features

• Shape Support: Draw multiple geometric shapes including:
  • Circles
  • Rectangles & Rounded Rectangles (with adjustable corner radius)
  • Hexagons
  • Lines
• Infinite Canvas: The drawing area has no edges. Pan in any direction and zoom from 5% to 4000% (see Canvas Navigation).
• Freehand Drawing: Sketch freely on the canvas.
• Text Support: Add text annotations with font family and size customization. Double-click to edit existing text.
• Object Manipulation:
  • Move: Drag shapes around the canvas.
  • Resize: Interactive resizing handles for shapes.
  • Delete: Remove selected objects (Delete key).
• Clipboard & History:
  • Undo/Redo: Full history support to revert and re-apply changes.
  • Cut, Copy, Paste: Standard clipboard operations for shapes.
• Styling:
  • Customizable Fill Color and Stroke Color (support for transparency).
  • Adjustable Stroke Width.
  • Predefined color palette and custom color pickers.
  • Fill and Stroke tools for quick coloring.
• File Operations:
  • Create New projects.
  • Open existing diagrams.
  • Save and Save As functionality (supports SVG export).
  • Close current project.

## Prerequisites

To build and run this project, you need the following installed:

• C++ Compiler supporting C++17 (e.g., GCC, Clang, MSVC).
• CMake (version 3.16 or higher).
• Qt 5 (specifically the Widgets module).

Build Instructions

1. Clone the repository (if you haven't already):

   git clone <repository-url>
   cd Micro-Vector-Graphics-Editor

   (Note: Ensure you are in the directory containing CMakeLists.txt)

2. Create a build directory:

   mkdir build
   cd build

3. Configure the project with CMake:

   cmake ..

4. Build the application:

   make

   (Or cmake --build . on Windows/other systems)

5. Run the application:

   ./program

Helper Scripts

Two helper scripts are available at the project root:

• ./start: Configures CMake, builds the project, and runs the application.
• ./clean: Removes the build/ directory.

Usage:

./start
./clean

Project Structure

The source code is organized as follows:

• src/: Contains all source code.
  • main.cpp: Entry point of the application.
  • gui/: Handles the graphical user interface.
    • mainwindow/: Implementation of the main window logic (menus, toolbar connections).
    • canvas/: The drawing area implementation, handling mouse events and painting.
    • headers/: Header files for GUI components.
  • model/: Contains the data structures for vector objects.
    • implementation/: Logic for shapes (Circle, Line, Hexagon, etc.) and their SVG representation.
    • headers/: Class definitions for the shapes.
  • diagram/: Manages the collection of shapes (the document model).
  • resources/: Icons and Qt resource files (.qrc).

Usage

• Toolbar: Select tools (Shapes, Freehand, Text) from the toolbar.
• Color Selection: Use the color swatches or entering color codes to change Fill/Stroke.
• Canvas: Click and drag on the canvas to draw shapes.
• File Menu: precise control over New, Open, Save, and Save As operations.

Canvas Navigation

Action	Mouse / Touchpad	Keyboard
Pan	Drag with the middle or right mouse button, or scroll (two-finger scroll on a touchpad)	–
Pan sideways (mouse)	Shift + scroll	–
Zoom in / out at the cursor	Ctrl + scroll	Ctrl + + / Ctrl + - (zooms at the canvas centre)
Reset view (100%, original position)	–	Ctrl + 0

• Zoom ranges from 5% to 4000%. Selection handles and click areas stay the same size on screen at every zoom level.
• New and Close reset the view. Open shows the whole drawing, zooming out if it doesn't fit.
• Saved SVG files include a viewBox covering every shape, so drawings placed anywhere on the canvas (including negative coordinates) display fully in other SVG viewers.

Authors

• Manya Jain