aerc/lib/ui/popover.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

63 lines
1.4 KiB
Go

package ui
import "github.com/gdamore/tcell/v2"
type Popover struct {
x, y, width, height int
content Drawable
}
func (p *Popover) Draw(ctx *Context) {
var subcontext *Context
// trim desired width to fit
width := p.width
if p.x+p.width > ctx.Width() {
width = ctx.Width() - p.x
}
if p.y+p.height+1 < ctx.Height() {
// draw below
subcontext = ctx.Subcontext(p.x, p.y+1, width, p.height)
} else if p.y-p.height >= 0 {
// draw above
subcontext = ctx.Subcontext(p.x, p.y-p.height, width, p.height)
} else {
// can't fit entirely above or below, so find the largest available
// vertical space and shrink to fit
if p.y > ctx.Height()-p.y {
// there is more space above than below
height := p.y
subcontext = ctx.Subcontext(p.x, 0, width, height)
} else {
// there is more space below than above
height := ctx.Height() - p.y
subcontext = ctx.Subcontext(p.x, p.y+1, width, height-1)
}
}
p.content.Draw(subcontext)
}
func (p *Popover) Event(e tcell.Event) bool {
if di, ok := p.content.(DrawableInteractive); ok {
return di.Event(e)
}
return false
}
func (p *Popover) Focus(f bool) {
if di, ok := p.content.(DrawableInteractive); ok {
di.Focus(f)
}
}
func (p *Popover) Invalidate() {
p.content.Invalidate()
}
func (p *Popover) OnInvalidate(f func(Drawable)) {
p.content.OnInvalidate(func(_ Drawable) {
f(p)
})
}