aerc/lib/ui/interfaces.go
y0ast 03650474e2 update tcell to v2 and enable TrueColor support
Also update to the tcell v2 PaletteColor api, which should keep the chosen
theme of the user intact.

Note, that if $TRUECOLOR is defined and a truecolor given, aerc will now stop
clipping the value to one of the theme colors.
Generally this is desired behaviour though.
2020-12-18 07:23:22 +01:00

66 lines
1.5 KiB
Go

package ui
import (
"github.com/gdamore/tcell/v2"
)
// Drawable is a UI component that can draw. Unless specified, all methods must
// only be called from a single goroutine, the UI goroutine.
type Drawable interface {
// Called when this renderable should draw itself.
Draw(ctx *Context)
// Specifies a function to call when this cell needs to be redrawn. The
// callback may be called in any goroutine.
OnInvalidate(callback func(d Drawable))
// Invalidates the drawable. This can be called from any goroutine.
Invalidate()
}
type RootDrawable interface {
Initialize(ui *UI)
}
type Interactive interface {
// Returns true if the event was handled by this component
Event(event tcell.Event) bool
// Indicates whether or not this control will receive input events
Focus(focus bool)
}
type Beeper interface {
OnBeep(func() error)
}
type DrawableInteractive interface {
Drawable
Interactive
}
type DrawableInteractiveBeeper interface {
DrawableInteractive
Beeper
}
// A drawable which contains other drawables
type Container interface {
Drawable
// Return all of the drawables which are children of this one (do not
// recurse into your grandchildren).
Children() []Drawable
}
type MouseHandler interface {
// Handle a mouse event which occurred at the local x and y positions
MouseEvent(localX int, localY int, event tcell.Event)
}
// A drawable that can be interacted with by the mouse
type Mouseable interface {
Drawable
MouseHandler
}
type MouseableDrawableInteractive interface {
DrawableInteractive
MouseHandler
}