Ebitengine tool kit for creating graphical user interfaces
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package etk
import (
"image"
"github.com/hajimehoshi/ebiten/v2"
)
// Window displays and passes input to only one child widget at a time.
type Window struct {
*Box
allChildren []Widget
active int
labels []string
hasLabel bool
}
func NewWindow() *Window {
return &Window{
Box: NewBox(),
}
}
func (w *Window) childrenUpdated() {
if len(w.allChildren) == 0 {
w.children = nil
return
}
w.children = []Widget{w.allChildren[w.active]}
}
func (w *Window) SetRect(r image.Rectangle) {
w.Lock()
defer w.Unlock()
w.rect = r
for _, wgt := range w.children {
wgt.SetRect(r)
}
}
func (w *Window) AddChild(wgt ...Widget) {
w.allChildren = append(w.allChildren, wgt...)
for _, widget := range wgt {
widget.SetRect(w.rect)
}
blankLabels := make([]string, len(wgt))
w.labels = append(w.labels, blankLabels...)
w.childrenUpdated()
}
func (w *Window) AddChildWithLabel(wgt Widget, label string) {
w.Lock()
defer w.Unlock()
wgt.SetRect(w.rect)
w.allChildren = append(w.allChildren, wgt)
w.labels = append(w.labels, label)
if label != "" {
w.hasLabel = true
}
w.childrenUpdated()
}
func (w *Window) HandleMouse(cursor image.Point, pressed bool, clicked bool) (handled bool, err error) {
return true, nil
}
func (w *Window) HandleKeyboard() (handled bool, err error) {
return true, nil
}
func (w *Window) Draw(screen *ebiten.Image) error {
// TODO draw labels
return nil
}