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/
checkbox.go
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/
checkbox.go
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package d2ui
import (
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource"
)
// static check that Checkbox implements ClickableWidget
var _ ClickableWidget = &Checkbox{}
// Checkbox represents a checkbox UI element
type Checkbox struct {
*BaseWidget
Image d2interface.Surface
checkedImage d2interface.Surface
onClick func()
checkState bool
enabled bool
}
// NewCheckbox creates a new instance of a checkbox
func (ui *UIManager) NewCheckbox(checkState bool) *Checkbox {
var err error
base := NewBaseWidget(ui)
result := &Checkbox{
BaseWidget: base,
checkState: checkState,
enabled: true,
}
checkboxSprite, err := ui.NewSprite(d2resource.Checkbox, d2resource.PaletteFechar)
if err != nil {
ui.Error(err.Error())
return nil
}
result.width, result.height, err = checkboxSprite.GetFrameSize(0)
if err != nil {
ui.Error(err.Error())
return nil
}
checkboxSprite.SetPosition(0, 0)
result.Image = ui.renderer.NewSurface(result.width, result.height)
checkboxSprite.RenderSegmented(result.Image, 1, 1, 0)
result.checkedImage = ui.renderer.NewSurface(result.width, result.height)
checkboxSprite.RenderSegmented(result.checkedImage, 1, 1, 1)
ui.addWidget(result)
return result
}
// Render renders the checkbox
func (v *Checkbox) Render(target d2interface.Surface) {
target.PushTranslation(v.x, v.y)
defer target.Pop()
target.PushFilter(d2enum.FilterNearest)
defer target.Pop()
if v.checkState {
target.Render(v.checkedImage)
} else {
target.Render(v.Image)
}
}
// Advance does nothing for checkboxes
func (v *Checkbox) Advance(_ float64) error {
return nil
}
// GetEnabled returns the enabled state of the checkbox
func (v *Checkbox) GetEnabled() bool {
return v.enabled
}
// SetEnabled sets the enabled state of the checkbox
func (v *Checkbox) SetEnabled(enabled bool) {
v.enabled = enabled
}
// SetPressed does nothing for checkboxes
func (v *Checkbox) SetPressed(_ bool) {
}
// SetCheckState sets the check state of the checkbox
func (v *Checkbox) SetCheckState(checkState bool) {
v.checkState = checkState
}
// GetCheckState returns the check state of the checkbox
func (v *Checkbox) GetCheckState() bool {
return v.checkState
}
// GetPressed returns the pressed state of the checkbox
func (v *Checkbox) GetPressed() bool {
return v.checkState
}
// OnActivated sets the callback function of the click event for the checkbox
func (v *Checkbox) OnActivated(callback func()) {
v.onClick = callback
}
// Activate activates the checkbox
func (v *Checkbox) Activate() {
v.checkState = !v.checkState
if v.onClick == nil {
return
}
v.onClick()
}