package d2ui import ( "log" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource" ) // Checkbox represents a checkbox UI element type Checkbox struct { manager *UIManager Image d2interface.Surface checkedImage d2interface.Surface x int y int width int height int onClick func() checkState bool visible bool enabled bool } // NewCheckbox creates a new instance of a checkbox func (ui *UIManager) NewCheckbox(checkState bool) *Checkbox { var err error result := &Checkbox{ checkState: checkState, visible: true, width: 0, height: 0, enabled: true, } checkboxSprite, err := ui.NewSprite(d2resource.Checkbox, d2resource.PaletteFechar) if err != nil { log.Print(err) return nil } result.width, result.height, err = checkboxSprite.GetFrameSize(0) if err != nil { log.Print(err) return nil } checkboxSprite.SetPosition(0, 0) result.Image = ui.renderer.NewSurface(result.width, result.height) err = checkboxSprite.RenderSegmented(result.Image, 1, 1, 0) if err != nil { log.Print(err) return nil } result.checkedImage = ui.renderer.NewSurface(result.width, result.height) err = checkboxSprite.RenderSegmented(result.checkedImage, 1, 1, 1) if err != nil { log.Print(err) return nil } ui.addWidget(result) return result } // bindManager binds the checkbox to the UI manager func (v *Checkbox) bindManager(manager *UIManager) { v.manager = manager } // Render renders the checkbox func (v *Checkbox) Render(target d2interface.Surface) error { 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) } return nil } // 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() } // GetPosition returns the position of the checkbox func (v *Checkbox) GetPosition() (x, y int) { return v.x, v.y } // GetSize returns the size of the checkbox func (v *Checkbox) GetSize() (width, height int) { return v.width, v.height } // GetVisible returns the visibility state of the checkbox func (v *Checkbox) GetVisible() bool { return v.visible } // SetPosition sets the position of the checkbox func (v *Checkbox) SetPosition(x, y int) { v.x = x v.y = y } // SetVisible sets the visibility of the checkbox func (v *Checkbox) SetVisible(visible bool) { v.visible = visible }