package d2ui import ( "strings" "time" "github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource" "github.com/OpenDiablo2/OpenDiablo2/d2core/d2asset" "github.com/OpenDiablo2/OpenDiablo2/d2core/d2input" "github.com/OpenDiablo2/OpenDiablo2/d2core/d2render" ) // TextBox with cursor focus var focusedTextBox *TextBox // TextBox represents a text input box type TextBox struct { text string x int y int visible bool enabled bool bgSprite *Sprite textLabel Label lineBar Label filter string } func CreateTextbox() TextBox { animation, _ := d2asset.LoadAnimation(d2resource.TextBox2, d2resource.PaletteUnits) bgSprite, _ := LoadSprite(animation) tb := TextBox{ filter: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", bgSprite: bgSprite, textLabel: CreateLabel(d2resource.FontFormal11, d2resource.PaletteUnits), lineBar: CreateLabel(d2resource.FontFormal11, d2resource.PaletteUnits), enabled: true, visible: true, } tb.lineBar.SetText("_") return tb } func (v *TextBox) SetFilter(filter string) { v.filter = filter } func (v *TextBox) Render(target d2render.Surface) { if !v.visible { return } v.bgSprite.Render(target) v.textLabel.Render(target) if (time.Now().UnixNano()/1e6)&(1<<8) > 0 { v.lineBar.Render(target) } } func (v *TextBox) OnKeyChars(event d2input.KeyCharsEvent) bool { if !(focusedTextBox == v) || !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 } func (v *TextBox) OnKeyRepeat(event d2input.KeyEvent) bool { if event.Key == d2input.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 } func (v *TextBox) Advance(_ float64) { if !v.visible || !v.enabled { return } } func (v *TextBox) Update() { } func (v *TextBox) GetText() string { return v.text } 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 } } func (v *TextBox) GetSize() (width, height int) { return v.bgSprite.GetCurrentFrameSize() } func (v *TextBox) SetPosition(x, y int) { v.x = x v.y = y v.textLabel.SetPosition(v.x+6, v.y+3) v.lineBar.SetPosition(v.x+6+v.textLabel.Width, v.y+3) v.bgSprite.SetPosition(v.x, v.y+26) } func (v *TextBox) GetPosition() (x, y int) { return v.x, v.y } func (v *TextBox) GetVisible() bool { return v.visible } func (v *TextBox) SetVisible(visible bool) { v.visible = visible } func (v *TextBox) GetEnabled() bool { return v.enabled } func (v *TextBox) SetEnabled(enabled bool) { v.enabled = enabled } func (v *TextBox) SetPressed(pressed bool) { // no op } func (v *TextBox) GetPressed() bool { return false } func (v *TextBox) OnActivated(callback func()) { // no op } func (v *TextBox) Activate() { focusedTextBox = v }