Esempio n. 1
0
File: utils.go Progetto: nelsam/gxui
func ChildToParent(coord math.Point, from Control, to Parent) math.Point {
	c := from
	for {
		p := c.Parent()
		if p == nil {
			panic(fmt.Errorf("Control detached: %s", Path(c)))
		}
		child := p.Children().Find(c)
		if child == nil {
			Dump(p)
			panic(fmt.Errorf("Control's parent (%p %T) did not contain control (%p %T).", &p, p, &c, c))
		}
		coord = coord.Add(child.Offset)
		if p == to {
			return coord
		}

		if control, ok := p.(Control); ok {
			c = control
		} else {
			Dump(p)
			panic(fmt.Errorf("ChildToParent (%p %T) -> (%p %T) reached non-control parent (%p %T).",
				&from, from, &to, to, &p, p))
		}
	}
}
Esempio n. 2
0
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)
		}
	})
}
Esempio n. 3
0
func (t *DefaultTextBoxLine) PaintCarets(c gxui.Canvas) {
	controller := t.textbox.controller
	for i, cnt := 0, controller.SelectionCount(); i < cnt; i++ {
		e := controller.Caret(i)
		l := controller.LineIndex(e)
		if l == t.lineIndex {
			s := controller.LineStart(l)
			m := t.outer.MeasureRunes(s, e)
			top := math.Point{X: t.caretWidth + m.W, Y: 0}
			bottom := top.Add(math.Point{X: 0, Y: t.Size().H})
			t.outer.PaintCaret(c, top, bottom)
		}
	}
}
Esempio n. 4
0
func (l *CodeEditorLine) PaintEditorCarets(c gxui.Canvas, info CodeEditorLinePaintInfo) {
	controller := l.textbox.controller
	for i, count := 0, controller.SelectionCount(); i < count; i++ {
		caret := controller.Caret(i)
		line := controller.LineIndex(caret)
		if line == l.lineIndex {
			var offset math.Point
			start := controller.LineStart(line)
			if len(info.GlyphOffsets) > 0 && caret > start {
				caretOffsetIndex := caret - start - 1
				offset = l.endOfChar(info.GlyphOffsets[caretOffsetIndex])
			}
			top := math.Point{X: l.caretWidth + offset.X, Y: 0}
			bottom := top.Add(math.Point{X: 0, Y: l.Size().H})
			l.outer.PaintCaret(c, top, bottom)
		}
	}
}
Esempio n. 5
0
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)
		}
	})
}