111 lines
3.0 KiB
Go
111 lines
3.0 KiB
Go
package objects
|
|
|
|
import "image"
|
|
import "git.tebibyte.media/tomo/tomo"
|
|
import "git.tebibyte.media/tomo/tomo/text"
|
|
import "git.tebibyte.media/tomo/tomo/theme"
|
|
import "git.tebibyte.media/tomo/tomo/input"
|
|
import "git.tebibyte.media/tomo/tomo/event"
|
|
|
|
// TextInput is a single-line editable text box.
|
|
type TextInput struct {
|
|
tomo.TextBox
|
|
text []rune
|
|
on struct {
|
|
enter event.FuncBroadcaster
|
|
edit event.FuncBroadcaster
|
|
}
|
|
}
|
|
|
|
// NewTextInput creates a new text input containing the specified text.
|
|
func NewTextInput (text string) *TextInput {
|
|
this := &TextInput { TextBox: tomo.NewTextBox() }
|
|
theme.Apply(this, theme.R("objects", "TextInput", ""))
|
|
this.SetAlign(tomo.AlignStart, tomo.AlignMiddle)
|
|
this.SetText(text)
|
|
this.SetFocusable(true)
|
|
this.SetSelectable(true)
|
|
this.SetOverflow(true, false)
|
|
this.OnKeyDown(this.handleKeyDown)
|
|
this.OnScroll(this.handleScroll)
|
|
return this
|
|
}
|
|
|
|
// SetText sets the text content of the input.
|
|
func (this *TextInput) SetText (text string) {
|
|
this.text = []rune(text)
|
|
this.TextBox.SetText(text)
|
|
}
|
|
|
|
// Text returns the text content of the input.
|
|
func (this *TextInput) Text () string {
|
|
return string(this.text)
|
|
}
|
|
|
|
// OnEnter specifies a function to be called when the user presses enter within
|
|
// the text input.
|
|
func (this *TextInput) OnEnter (callback func ()) event.Cookie {
|
|
return this.on.enter.Connect(callback)
|
|
}
|
|
|
|
// OnEdit specifies a function to be called when the user edits the input text.
|
|
func (this *TextInput) OnEdit (callback func ()) event.Cookie {
|
|
return this.on.edit.Connect(callback)
|
|
}
|
|
|
|
func (this *TextInput) handleKeyDown (key input.Key, numpad bool) {
|
|
dot := this.Dot()
|
|
modifiers := this.Modifiers()
|
|
word := modifiers.Control
|
|
sel := modifiers.Shift
|
|
changed := false
|
|
|
|
// TODO all this (except editing stuff) really should be moved into the
|
|
// backend
|
|
|
|
switch {
|
|
case key == input.KeyEnter:
|
|
this.on.enter.Broadcast()
|
|
case key == input.KeyHome || (modifiers.Alt && key == input.KeyLeft):
|
|
dot.End = 0
|
|
if !sel { dot.Start = dot.End }
|
|
case key == input.KeyEnd || (modifiers.Alt && key == input.KeyRight):
|
|
dot.End = len(this.text)
|
|
if !sel { dot.Start = dot.End }
|
|
case key == input.KeyLeft:
|
|
if sel {
|
|
dot = text.SelectLeft(this.text, dot, word)
|
|
} else {
|
|
dot = text.MoveLeft(this.text, dot, word)
|
|
}
|
|
case key == input.KeyRight:
|
|
if sel {
|
|
dot = text.SelectRight(this.text, dot, word)
|
|
} else {
|
|
dot = text.MoveRight(this.text, dot, word)
|
|
}
|
|
case key == input.KeyBackspace:
|
|
this.text, dot = text.Backspace(this.text, dot, word)
|
|
changed = true
|
|
case key == input.KeyDelete:
|
|
this.text, dot = text.Delete(this.text, dot, word)
|
|
changed = true
|
|
case key == input.Key('a') && modifiers.Control:
|
|
dot.Start = 0
|
|
dot.End = len(this.text)
|
|
case key.Printable():
|
|
this.text, dot = text.Type(this.text, dot, rune(key))
|
|
changed = true
|
|
}
|
|
|
|
this.Select(dot)
|
|
if changed {
|
|
this.SetText(string(this.text))
|
|
this.on.edit.Broadcast()
|
|
}
|
|
}
|
|
|
|
func (this *TextInput) handleScroll (x, y float64) {
|
|
this.ScrollTo(this.ContentBounds().Min.Add(image.Pt(int(x), int(y))))
|
|
}
|