termdash/CHANGELOG.md

Changelog

All notable changes to this project are documented here.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.7.1 - 24-Feb-2019

Fixed

• Some of the packages that were moved into internal are required externally. This release makes them available again.

Breaking API changes

• The draw.LineStyle enum was refactored into its own package linestyle.LineStyle. Users will have to replace:

  • draw.LineStyleNone -> linestyle.None
  • draw.LineStyleLight -> linestyle.Light
  • draw.LineStyleDouble -> linestyle.Double
  • draw.LineStyleRound -> linestyle.Round

0.7.0 - 24-Feb-2019

Added

New widgets

• The Button widget.

Improvements to documentation

• Clearly marked the public API surface by moving private packages into internal directory.
• Started a GitHub wiki for Termdash.

Improvements to the LineChart widget

• The LineChart widget can display X axis labels in vertical orientation.
• The LineChart widget allows the user to specify a custom scale for the Y axis.
• The LineChart widget now has an option that disables scaling of the X axis. Useful for applications that want to continuously feed data and make them "roll" through the linechart.
• The LineChart widget now has a method that returns the observed capacity of the LineChart the last time Draw was called.
• The LineChart widget now supports zoom of the content triggered by mouse events.

Improvements to the Text widget

• The Text widget now has a Write option that atomically replaces the entire text content.

Improvements to the infrastructure

• A function that draws text vertically.
• A non-blocking event distribution system that can throttle repetitive events.
• Generalized mouse button FSM for use in widgets that need to track mouse button clicks.

Changed

• Termbox is now initialized in 256 color mode by default.
• The infrastructure now uses the non-blocking event distribution system to distribute events to subscribers. Each widget is now an individual subscriber.
• The infrastructure now throttles event driven screen redraw rather than redrawing for each input event.
• Widgets can now specify the scope at which they want to receive keyboard and mouse events.

Breaking API changes

High impact

• The constructors of all the widgets now also return an error so that they can validate the options. This is a breaking change for the following widgets: BarChart, Gauge, LineChart, SparkLine, Text. The callers will have to handle the returned error.

Low impact

• The container package no longer exports separate methods to receive Keyboard and Mouse events which were replaced by a Subscribe method for the event distribution system. This shouldn't affect users as the removed methods aren't needed by container users.
• The widgetapi.Options struct now uses an enum instead of a boolean when widget specifies if it wants keyboard or mouse events. This only impacts development of new widgets.

Fixed

• The LineChart widget now correctly determines the Y axis scale when multiple series are provided.
• Lint issues in the codebase, and updated Travis configuration so that golint is executed on every run.
• Termdash now correctly starts in locales like zh_CN.UTF-8 where some of the characters it uses internally can have ambiguous width.

0.6.1 - 12-Feb-2019

Fixed

• The LineChart widget now correctly places custom labels.

0.6.0 - 07-Feb-2019

Added

• The SegmentDisplay widget.
• A CHANGELOG.
• New line styles for borders.

Changed

• Better recordings of the individual demos.

Fixed

• The LineChart now has an option to change the behavior of the Y axis from zero anchored to adaptive.
• Lint errors reported on the Go report card.
• Widgets now correctly handle a race when new user data are supplied between calls to their Options() and Draw() methods.

0.5.0 - 21-Jan-2019

Added

• Draw primitives for drawing circles.
• The Donut widget.

Fixed

• Bugfixes in the braille canvas.
• Lint errors reported on the Go report card.
• Flaky behavior in termdash_test.

0.4.0 - 15-Jan-2019

Added

• 256 color support.
• Variable size container splits.
• A more complete demo of the functionality.

Changed

• Updated documentation and README.

0.3.0 - 13-Jan-2019

Added

• Primitives for drawing lines.
• Implementation of a Braille canvas.
• The LineChart widget.

0.2.0 - 02-Jul-2018

Added

• The SparkLine widget.
• The BarChart widget.
• Manually triggered redraw.
• Travis now checks for presence of licence headers.

Fixed

• Fixing races in termdash_test.

0.1.0 - 13-Jun-2018

Added

• Documentation of the project and its goals.
• Drawing infrastructure.
• Testing infrastructure.
• The Gauge widget.
• The Text widget.