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