Lx Calculator

A touch calculator app for Garmin devices.

Features

• Large, easy to press buttons
• Physical button based shortcuts
• Automatically saving history for recall
• Trigonometry functions: sin, cos, tan, asin, acos, atan, pi, e, ln, log
  • With support for degrees, radians, and gradians
• Memory that can be set, recalled, and added to
• Unit conversions between physical units; convert metres to yards, litres to pints, celsius to fahrenheit, and more!
• Useful shortcuts for quick actions:
  • Press START or tap the answer box to quickly get the answer
  • Long hold on DEL to delete the current input

How to Use

The central view contains the number pad. To switch to another page:

• Swipe in a direction, or
• Tap the arrows on the edge of the display, or
• Press the UP or DOWN buttons

Pages have small arrows around the edge to indicate other pages.

To get to the Main Menu, hold the UP button.

Button mapping

• UP: Move to the left page
• DOWN: Move to the right page
• START: Calculate the current formula
• Holding UP / MENU: Main Menu

Settings

Settings can be adjusted from the Connect IQ app on your phone, or by long-pressing the MENU button and going to the "Settings" menu.

• Switch after setting Operator
  • If set, the view will reset to the main number pad once an operator has been chosen.
• Vibration
  • If set, button presses will cause a small vibration.
• Screen Transitions
  • If set, moving pages will show an animation. Disable to speed up moving around the app.

Developer Documentation

Preparing a release

To perform a release:

• Create an entry in CHANGELOG.md under the next version
• Update README.md with features / screenshots
• Update the version number for AppVersion in resources/strings.xml.
• Commit with Version x.x.x
• Tag that commit as vx.x.x

Creating screenshots

• Use the latest Fenix X watch in the simulator
• Screenshot with an external program (to capture the border as well)
• Using GIMP:
  1. Create a selection around the 280x280 pixels of the screen
  2. Grow the selection by 70 pixels
  3. Using the Fuzzy Select Tool
  • Antialiasing enabled
  • Feather edges set to 2.0
  • Threshold set to 50
  4. Remove the white exterior

Screenshots