func (l *CodeEditorLine) PaintEditorSelections(c gxui.Canvas, info CodeEditorLinePaintInfo) {
controller := l.textbox.controller
ls, le := uint64(controller.LineStart(l.lineIndex)), uint64(controller.LineEnd(l.lineIndex))
selections := controller.Selections()
if l.textbox.selectionDragging {
interval.Replace(&selections, l.textbox.selectionDrag)
}
interval.Visit(&selections, gxui.CreateTextSelection(int(ls), int(le), false), func(s, e uint64, _ int) {
if s < e {
var startOffset math.Point
if s > ls {
startOffset = l.endOfChar(info.GlyphOffsets[s-ls-1])
}
var endOffset math.Point
if e > ls {
endOffset = l.endOfChar(info.GlyphOffsets[e-ls-1])
}
width := endOffset.X - startOffset.X
m := l.outer.MeasureRunes(int(s), int(e))
m.W = width
top := math.Point{X: l.caretWidth + startOffset.X, Y: 0}
bottom := top.Add(m.Point())
l.outer.PaintSelection(c, top, bottom)
}
})
}
func (l *CodeEditorLine) PaintBorders(c gxui.Canvas, info CodeEditorLinePaintInfo) {
start, _ := info.LineSpan.Span()
offsets := info.GlyphOffsets
for _, layer := range l.ce.layers {
if layer != nil && layer.BorderColor() != nil {
color := *layer.BorderColor()
interval.Visit(layer.Spans(), info.LineSpan, func(vs, ve uint64, _ int) {
s, e := vs-start, ve-start
r := math.CreateRect(offsets[s].X, 0, offsets[e-1].X+info.GlyphWidth, info.LineHeight)
c.DrawRoundedRect(r, 3, 3, 3, 3, gxui.CreatePen(0.5, color), gxui.TransparentBrush)
})
}
}
}
func (l *CodeEditorLine) PaintBackgroundSpans(c gxui.Canvas, info CodeEditorLinePaintInfo) {
start, _ := info.LineSpan.Span()
offsets := info.GlyphOffsets
remaining := interval.IntDataList{info.LineSpan}
for _, layer := range l.ce.layers {
if layer != nil && layer.BackgroundColor() != nil {
color := *layer.BackgroundColor()
for _, span := range layer.Spans().Overlaps(info.LineSpan) {
interval.Visit(&remaining, span, func(vs, ve uint64, _ int) {
s, e := vs-start, ve-start
r := math.CreateRect(offsets[s].X, 0, offsets[e-1].X+info.GlyphWidth, info.LineHeight)
c.DrawRoundedRect(r, 3, 3, 3, 3, gxui.TransparentPen, gxui.Brush{Color: color})
})
interval.Remove(&remaining, span)
}
}
}
}
func (t *DefaultTextBoxLine) PaintSelections(c gxui.Canvas) {
controller := t.textbox.controller
ls, le := controller.LineStart(t.lineIndex), controller.LineEnd(t.lineIndex)
selections := controller.Selections()
if t.textbox.selectionDragging {
interval.Replace(&selections, t.textbox.selectionDrag)
}
interval.Visit(&selections, gxui.CreateTextSelection(ls, le, false), func(s, e uint64, _ int) {
if s < e {
x := t.outer.MeasureRunes(ls, int(s)).W
m := t.outer.MeasureRunes(int(s), int(e))
top := math.Point{X: t.caretWidth + x, Y: 0}
bottom := top.Add(m.Point())
t.outer.PaintSelection(c, top, bottom)
}
})
}
func (l *CodeEditorLine) PaintGlyphs(c gxui.Canvas, info CodeEditorLinePaintInfo) {
start, _ := info.LineSpan.Span()
runes, offsets, font := info.Runes, info.GlyphOffsets, info.Font
remaining := interval.IntDataList{info.LineSpan}
for _, layer := range l.ce.layers {
if layer != nil && layer.Color() != nil {
color := *layer.Color()
for _, span := range layer.Spans().Overlaps(info.LineSpan) {
interval.Visit(&remaining, span, func(vs, ve uint64, _ int) {
s, e := vs-start, ve-start
c.DrawRunes(font, runes[s:e], offsets[s:e], color)
})
interval.Remove(&remaining, span)
}
}
}
for _, span := range remaining {
s, e := span.Span()
s, e = s-start, e-start
c.DrawRunes(font, runes[s:e], offsets[s:e], l.ce.textColor)
}
}