package d2ui import ( "log" "strings" "time" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource" ) // TextBox represents a text input box type TextBox struct { manager *UIManager textLabel *Label lineBar *Label text string filter string x int y int bgSprite *Sprite visible bool enabled bool isFocused bool } // NewTextbox creates a new instance of a text box func (ui *UIManager) NewTextbox() *TextBox { bgSprite, err := ui.NewSprite(d2resource.TextBox2, d2resource.PaletteUnits) if err != nil { log.Print(err) return nil } tb := &TextBox{ filter: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", bgSprite: bgSprite, textLabel: ui.NewLabel(d2resource.FontFormal11, d2resource.PaletteUnits), lineBar: ui.NewLabel(d2resource.FontFormal11, d2resource.PaletteUnits), enabled: true, visible: true, } tb.lineBar.SetText("_") ui.addWidget(tb) return tb } // SetFilter sets the text box filter func (v *TextBox) SetFilter(filter string) { v.filter = filter } // Render renders the text box func (v *TextBox) Render(target d2interface.Surface) error { if !v.visible { return nil } if err := v.bgSprite.Render(target); err != nil { return err } v.textLabel.Render(target) if (time.Now().UnixNano()/1e6)&(1<<8) > 0 { v.lineBar.Render(target) } return nil } // bindManager binds the textbox to the UI manager func (v *TextBox) bindManager(manager *UIManager) { v.manager = manager } // OnKeyChars handles key character events func (v *TextBox) OnKeyChars(event d2interface.KeyCharsEvent) bool { if !v.isFocused || !v.visible || !v.enabled { return false } newText := string(event.Chars()) if len(newText) > 0 { v.text += newText v.SetText(v.text) return true } return false } // OnKeyRepeat handles key repeat events func (v *TextBox) OnKeyRepeat(event d2interface.KeyEvent) bool { if event.Key() == d2enum.KeyBackspace && debounceEvents(event.Duration()) { if len(v.text) >= 1 { v.text = v.text[:len(v.text)-1] } v.SetText(v.text) } return false } func debounceEvents(numFrames int) bool { const ( delay = 30 interval = 3 ) if numFrames == 1 { return true } if numFrames >= delay && (numFrames-delay)%interval == 0 { return true } return false } // Advance updates the text box func (v *TextBox) Advance(_ float64) error { return nil } // Update updates the textbox (not currently implemented) func (v *TextBox) Update() { } // GetText returns the text box's text func (v *TextBox) GetText() string { return v.text } // SetText sets the text box's text //nolint:gomnd // Built-in values func (v *TextBox) SetText(newText string) { result := "" for _, c := range newText { if !strings.Contains(v.filter, string(c)) { continue } result += string(c) } if len(result) > 15 { result = result[0:15] } v.text = result for { tw, _ := v.textLabel.GetTextMetrics(result) if tw > 150 { result = result[1:] continue } v.lineBar.SetPosition(v.x+6+tw, v.y+3) v.textLabel.SetText(result) break } } // GetSize returns the size of the text box func (v *TextBox) GetSize() (width, height int) { return v.bgSprite.GetCurrentFrameSize() } // SetPosition sets the position of the text box //nolint:gomnd // Built-in values func (v *TextBox) SetPosition(x, y int) { lw, _ := v.textLabel.GetSize() v.x = x v.y = y v.textLabel.SetPosition(v.x+6, v.y+3) v.lineBar.SetPosition(v.x+6+lw, v.y+3) v.bgSprite.SetPosition(v.x, v.y+26) } // GetPosition returns the position of the text box func (v *TextBox) GetPosition() (x, y int) { return v.x, v.y } // GetVisible returns the visibility of the text box func (v *TextBox) GetVisible() bool { return v.visible } // SetVisible sets the visibility of the text box func (v *TextBox) SetVisible(visible bool) { v.visible = visible } // GetEnabled returns the enabled state of the text box func (v *TextBox) GetEnabled() bool { return v.enabled } // SetEnabled sets the enabled state of the text box func (v *TextBox) SetEnabled(enabled bool) { v.enabled = enabled } // SetPressed does nothing for text boxes func (v *TextBox) SetPressed(_ bool) { // no op } // GetPressed does nothing for text boxes func (v *TextBox) GetPressed() bool { return false } // OnActivated handles activation events for the text box func (v *TextBox) OnActivated(_ func()) { // no op } // Activate activates the text box func (v *TextBox) Activate() { v.isFocused = true }