[Issue 76] Add maximumScaleFactor to Typography

[mpospese]

Introduction

We support setting a maximum scale factor on individual UI elements (buttons, labels, text fields, etc.) but not at the Typography label. If there is an app-wide requirement for a given maximum scale factor (e.g. 2.5) then it would be onerous to apply because every single label, button, etc would need to set that maximum scale factor. It might be nice to be able to set this at the Typography level and then it would apply to every UI element that makes use of that Typography.

Purpose

Fix #76 Add maximumScaleFactor property to Typography

Scope

• Add property to Typography
• Add new mutator to Typography
• Adjust behavior of Typography.generateLayout
• Add unit tests

Discussion

I decided that the maximum scale factor should be the minimum of the limit set by the individual UI element (if any) and the Typography (if any). e.g. if label.maximumScaleFactor = 3 and typography.maximumScaleFactor = 2, then 2 will be used.

Out of Scope

I decided not to alter the value of isFixed when adjusting maximumScaleFactor because that would just complicate the behavior of what is otherwise a pretty simple struct.

📈 Coverage

Code

99.2%

Documentation

100%