QWidget Splitter

Models a resizable two-panel widget splitter to help UI designers and developers plan initial layouts.

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About This Tool

The tool models an initial two-panel split for a UI container, enabling designers and developers to preset sizes before implementing drag behavior. It accepts container dimensions, orientation, and minimum panel sizes, producing deterministic starting values for left and right panels. This supports cross-platform planning and ensures consistent layouts across tools.
Conceptually, it treats the splitter as a fixed divider between two panes and outputs both pixel and percent allocations to guide design specs and handoffs. It supports horizontal and vertical arrangements and can model different splitter thicknesses for accurate layout planning.
A key value proposition is reducing guesswork in early-stage UI design: teams can lock in a feasible starting split that respects minimums and overall container constraints, then iterate with drag behavior in the implementation phase.
Use cases include IDEs, dashboards, settings panels, and any desktop or embedded UI that relies on resizeable panes. The tool remains framework-agnostic, focusing on arithmetic consistency and auditable initial states rather than runtime interaction.

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How to Use

Provide inputs: container dimensions, orientation, and initial_ratio or left_min/right_min values.
Set optional constraints: splitter_thickness_px, left_min_px, right_min_px, and snapping if needed.
Run calculation to derive left_size_px, right_size_px, splitter_position_px, and percent outputs.
Review outputs for feasibility and consistency with design specs.
Adjust inputs and re-run as needed to satisfy minimums and overall container capacity.

Frequently Asked Questions

Find Quick Answers

What is a widget splitter tool used for?

It provides deterministic starting sizes for a two-panel layout, enabling UI teams to plan initial allocations before implementing interactive resizing. It outputs both pixel and percentage values to support design specs and cross-team reviews.

What inputs are required?

Container dimensions, orientation (horizontal or vertical), and an initial split ratio or minimum panel sizes. Optional inputs include splitter thickness and minimums for each panel. All values must be non-negative and within feasible space.

How are minimum sizes enforced?

The tool clamps panel sizes to their minimums if the computed values would violate them. If the combined minimums exceed the container capacity, the tool flags an overflow condition and returns the closest feasible distribution.

Can it model both horizontal and vertical splits?

Yes. The algorithm adapts to orientation, using width for horizontal splits and height for vertical splits. Outputs include both pixel and percent representations for downstream design and implementation.

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