FileDropUMG

Dokumentation Release Notes

File Drop UMG: Streamline Your File Handling with Drag-and-Drop for UMG Widgets

File Drop UMG is a powerful Unreal Engine plugin that enables developers to integrate drag-and-drop file functionality directly into UMG widgets. Whether you’re developing runtime applications or creating custom editor tools, this plugin simplifies file input and enhances user interaction by allowing users to drag files from their file system (e.g., Windows Explorer) and drop them into UMG widgets within your project. This plugin supports both runtime and editor environments, making it versatile for different use cases. In a packaged build, it allows users to interact with the application at runtime by dragging files into the UI. In the Unreal Editor, it allows developers to create custom file input workflows for asset management, media import, and more.

Features

  • Drag-and-Drop File Handling: Enables users to drag files from their local system and drop them directly into UMG widgets, providing seamless file upload interaction.
  • Runtime and Editor Support: Fully functional in both packaged games (runtime) and within the Unreal Editor, allowing for testing, integration during development, and the creation of custom editor tools.
  • File Validation: Supports file validation with customizable filters based on file extensions or other criteria, and the ability to integrate custom validation logic.
  • Blueprint Integration: Fully exposed to Blueprint, making it easy to bind events, validate files, and customize the widget’s appearance without needing C++.
  • Slate and UMG Widgets: Includes both a C++ Slate widget and UMG components to support file drop functionality in various parts of your project.
  • Event Handling: Trigger custom logic with events like OnFilesDropped, OnFilesValidCheck, OnFilesDragEnter, and OnFilesDragLeave, offering full control over user interactions.
  • Visual Feedback: Provides visual and text-based feedback during drag-and-drop actions, improving user experience with real-time indicators for valid and invalid file drops.

Example Use Cases

  • In-Game Asset Import: Allow users to drag-and-drop media files (images, videos) directly into your application for immediate use.
  • Custom Editor Workflows: Streamline file import processes within the Unreal Editor by enabling the drag-and-drop of assets like textures, meshes, or scripts into custom editor widgets.

How It Works

  1. Setup: Add the FileDrop component to your widget blueprint, or use the SFileDrop Slate widget in your C++ codebase.
  2. Handling File Drops: The plugin listens for drag-and-drop events and captures the dropped file paths. These file paths are validated based on extension filters (if enabled) and optionally by a custom validator. Files are processed accordingly based on the logic you define..
  3. Custom File Processing: Once files are accepted, they can be processed in your application, whether it’s for loading assets, displaying content, or storing them locally.

Why Use File Drop UMG?

File Drop UMG provides a streamlined, flexible solution for file input directly within Unreal Engine. Its robust integration with UMG and Slate, combined with both runtime and editor functionality, makes it an ideal choice for developers who need advanced file-handling capabilities. Whether you’re creating an application for media management, asset import, or custom Unreal Editor tools, this plugin offers an efficient and user-friendly solution.