Create revamped UI (v2)

[gyim]

The current UI implementation is very old, and unfortunately, some key parts like the webview is using a deprecated API, so it is not easy to push an update to the App Store. So I started to re-implement the UI based on SwiftUI. The hope is that it will be much easier to develop and modify than the current, Objective-C + UIKit based app.

This ticket serves as a TODO list to create the existing functionality in the new branch (v2):

Features

Main screen

• [x] Show selected date dynamically
• [x] Show celebrations with the proper liturgical color
• [x] Show prayer list
• [ ] Support compact prayer list
• [x] Show Settings link
• [x] Show About link
• [x] Smooth animations between days

Date picker

• [x] Implement prev/next day buttons in main screen
• [x] Show full month in a modal dialog (calendar button)
• [x] Implement prev/next month buttons in calendar picker
• [x] Implement shortcut to today

Prayer screen

• [x] Show prayer text in web view
• [x] Toggle navigation bar on tap event
• [x] Increase / decrease font size via toolbar
• [x] Support modifier links
• [x] Support Mary antiphones

Settings

• [x] Implement settings from CGI XML output
• [x] Save settings to user defaults
• [x] Add font chooser

Language support

• [x] Add language chooser to Settings
• [x] Use appropriate CGI URL for each language
• [x] Use translatable strings on UI
• [x] Translate date format
• [x] Select language at first startup

Connectivity

• [x] Fetch data online
• [x] Fetch data offline
• [x] Switch between online/offline mode automatically
• [x] Manual fallback to local/remote mode

Night mode

• [x] Support global night mode on UI
• [x] Select night mode on prayer screen

Text-to-speech

• [x] Add modal player dialog to prayer screen
• [x] Control TTS via player dialog
• [x] Support background playback
• [x] Add TTS speed to Settings

Screenshots

[breviar-sk]

This new GUI looks great!