181 lines
3.4 KiB
Go
181 lines
3.4 KiB
Go
package d2ui
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import (
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"strings"
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"time"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2asset"
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)
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// TextBox with cursor focus
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var focusedTextBox *TextBox
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// TextBox represents a text input box
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type TextBox struct {
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text string
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x int
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y int
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visible bool
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enabled bool
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bgSprite *Sprite
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textLabel Label
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lineBar Label
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filter string
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}
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func CreateTextbox(renderer d2interface.Renderer) TextBox {
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animation, _ := d2asset.LoadAnimation(d2resource.TextBox2, d2resource.PaletteUnits)
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bgSprite, _ := LoadSprite(animation)
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tb := TextBox{
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filter: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ",
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bgSprite: bgSprite,
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textLabel: CreateLabel(renderer, d2resource.FontFormal11, d2resource.PaletteUnits),
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lineBar: CreateLabel(renderer, d2resource.FontFormal11, d2resource.PaletteUnits),
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enabled: true,
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visible: true,
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}
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tb.lineBar.SetText("_")
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return tb
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}
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func (v *TextBox) SetFilter(filter string) {
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v.filter = filter
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}
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func (v *TextBox) Render(target d2interface.Surface) {
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if !v.visible {
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return
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}
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v.bgSprite.Render(target)
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v.textLabel.Render(target)
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if (time.Now().UnixNano()/1e6)&(1<<8) > 0 {
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v.lineBar.Render(target)
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}
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}
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func (v *TextBox) OnKeyChars(event d2interface.KeyCharsEvent) bool {
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if !(focusedTextBox == v) || !v.visible || !v.enabled {
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return false
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}
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newText := string(event.Chars())
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if len(newText) > 0 {
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v.text += newText
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v.SetText(v.text)
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return true
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}
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return false
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}
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func (v *TextBox) OnKeyRepeat(event d2interface.KeyEvent) bool {
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if event.Key() == d2interface.KeyBackspace && debounceEvents(event.Duration()) {
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if len(v.text) >= 1 {
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v.text = v.text[:len(v.text)-1]
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}
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v.SetText(v.text)
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}
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return false
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}
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func debounceEvents(numFrames int) bool {
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const (
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delay = 30
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interval = 3
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)
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if numFrames == 1 {
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return true
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}
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if numFrames >= delay && (numFrames-delay)%interval == 0 {
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return true
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}
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return false
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}
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func (v *TextBox) Advance(_ float64) {
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if !v.visible || !v.enabled {
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return
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}
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}
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func (v *TextBox) Update() {
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}
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func (v *TextBox) GetText() string {
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return v.text
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}
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func (v *TextBox) SetText(newText string) {
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result := ""
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for _, c := range newText {
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if !strings.Contains(v.filter, string(c)) {
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continue
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}
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result += string(c)
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}
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if len(result) > 15 {
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result = result[0:15]
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}
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v.text = result
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for {
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tw, _ := v.textLabel.GetTextMetrics(result)
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if tw > 150 {
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result = result[1:]
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continue
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}
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v.lineBar.SetPosition(v.x+6+tw, v.y+3)
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v.textLabel.SetText(result)
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break
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}
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}
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func (v *TextBox) GetSize() (width, height int) {
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return v.bgSprite.GetCurrentFrameSize()
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}
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func (v *TextBox) SetPosition(x, y int) {
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v.x = x
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v.y = y
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v.textLabel.SetPosition(v.x+6, v.y+3)
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v.lineBar.SetPosition(v.x+6+v.textLabel.Width, v.y+3)
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v.bgSprite.SetPosition(v.x, v.y+26)
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}
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func (v *TextBox) GetPosition() (x, y int) {
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return v.x, v.y
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}
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func (v *TextBox) GetVisible() bool {
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return v.visible
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}
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func (v *TextBox) SetVisible(visible bool) {
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v.visible = visible
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}
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func (v *TextBox) GetEnabled() bool {
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return v.enabled
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}
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func (v *TextBox) SetEnabled(enabled bool) {
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v.enabled = enabled
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}
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func (v *TextBox) SetPressed(pressed bool) {
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// no op
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}
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func (v *TextBox) GetPressed() bool {
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return false
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}
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func (v *TextBox) OnActivated(callback func()) {
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// no op
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}
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func (v *TextBox) Activate() {
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focusedTextBox = v
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}
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