v0.7.0 - 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.