// DefaultTextBoxLine overrides
func (l *CodeEditorLine) Paint(c gxui.Canvas) {
font := l.ce.Font()
controller := l.ce.Controller()
if l.lineIndex >= controller.LineCount() {
// The controller's text differs slightly from the
// CodeEditor's lines - best to avoid the panic on
// the next few lines.
return
}
start := controller.LineStart(l.lineIndex)
end := controller.LineEnd(l.lineIndex)
var info CodeEditorLinePaintInfo
if start != end {
info = CodeEditorLinePaintInfo{
LineSpan: interval.CreateIntData(start, end, nil),
Runes: controller.LineRunes(l.lineIndex),
GlyphOffsets: l.offsets(font),
GlyphWidth: font.GlyphMaxSize().W,
LineHeight: l.Size().H,
Font: font,
}
l.outer.PaintBackgroundSpans(c, info)
l.outer.PaintEditorSelections(c, info)
l.outer.PaintGlyphs(c, info)
l.outer.PaintBorders(c, info)
}
if l.textbox.HasFocus() {
l.outer.PaintEditorCarets(c, info)
}
}
func (l *CodeSyntaxLayer) UpdateSpans(runeCount int, edits []TextBoxEdit) {
min := 0
max := runeCount
for _, e := range edits {
if l == nil {
continue
}
for j, s := range l.spans {
at := e.At
start, end := s.Range()
if start >= at {
start = math.Clamp(start+e.Delta, min, max)
}
if end > at {
end = math.Clamp(end+e.Delta, min, max)
}
if end < start {
end = start
}
l.spans[j] = interval.CreateIntData(start, end, s.Data())
}
}
}
func (l *CodeSyntaxLayer) AddData(start, count int, data interface{}) {
span := interval.CreateIntData(start, start+count, data)
interval.Replace(&l.spans, span)
}