Unified Input Handling for Diverse Device Types
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Solution Overview
Problem
Contemporary user interfaces face complexity in handling diverse types of device input, leading to confusion and inefficiency for UI designers, as various input methods (such as gamepad, keyboard, touch, voice, and mouse) need to be managed separately for different UI elements.
Innovation Solution
A unified input and invoke handling system that normalizes different types of device input by categorizing them into button, pointer, and command inputs, using providers to route input to appropriate UI elements and handle invoke actions consistently, independent of the input device used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate handling methods are used for different input devices (gamepad, keyboard, touch, voice, mouse), then each input device can be optimized for its specific characteristics, but the UI design complexity increases and becomes confusing for designers
Solution Approach 1:
The input handling system is segmented into distinct providers (button provider, pointer provider, command provider) that each handle specific input device types. This segmentation allows optimized handling for each input type while maintaining a clear, modular structure that reduces overall system complexity and makes it easier for designers to understand and implement.
Solution Approach 2:
An input namespace component acts as an intermediary between the various input devices and the UI elements. This mediator routes input from different devices through appropriate providers to the correct UI elements, abstracting the complexity of multiple input handling mechanisms into a unified interface that simplifies UI design.
2Adaptability or versatility
If multiple separate handling mechanisms are implemented for different input devices, then comprehensive input support is achieved, but the time required to handle and process input increases
Solution Approach 1:
The input namespace component serves as a universal handler that can process input from multiple device types (gamepad, keyboard, touch, voice, mouse) through a single unified mechanism. This multi-functionality maintains comprehensive input support while reducing processing time by eliminating the need for separate handling paths for each input device.
Solution Approach 2:
Instead of implementing completely separate handling mechanisms for each input device, the system uses provider classes that copy and adapt the core input handling pattern to suit different device characteristics. This allows comprehensive support while maintaining consistent, efficient processing logic across all input types.
3Measurement precision
If detailed specific handling is provided for each input device type, then input accuracy is maintained, but the extensibility to new input devices becomes difficult
Solution Approach 1:
The system uses a dynamic provider selection mechanism where the input namespace component determines which provider to use based on the input device type. This dynamic approach allows new input devices to be added by creating appropriate providers that follow the existing pattern, maintaining input accuracy while enabling easy extensibility without modifying core handling logic.
Solution Approach 2:
The system handles different input device types by changing parameters such as the provider class selected and the event routing behavior, rather than requiring fundamentally different handling mechanisms. This parameter-based differentiation maintains input accuracy for each device type while making the system highly extensible to new devices through parameter configuration rather than structural changes.
Data Source
AI summary
The described technology is directed towards normalizing input received from various types of device types for providing the input to user interface (UI) elements in a unified way that reflects the invoke intent of the user. Input from different device types is classified as button input, pointer input or command input, and routed to a corresponding button provider, pointer provider or command provider. Each provider includes logic for communicating input data (e.g., events) to a UI element or elements. Based upon the input events, a UI element can execute a corresponding invoke handler to take an invoke action for that particular event.