Golang View.Sel方法代碼示例

func (t *tbfe) renderLStatus(v *backend.View, y int, fg, bg termbox.Attribute) {
	st := v.Status()
	sel := v.Sel()
	j := 0

	for k, v := range st {
		s := fmt.Sprintf("%s: %s, ", k, v)
		addString(j, y, s, fg, bg)
	}

	if sel.Len() == 0 {
		return
	} else if l := sel.Len(); l > 1 {
		s := fmt.Sprintf("%d selection regions", l)
		j = addString(j, y, s, fg, bg)
	} else if r := sel.Get(0); r.Size() == 0 {
		row, col := v.Buffer().RowCol(r.A)
		s := fmt.Sprintf("Line %d, Column %d", row, col)
		j = addString(j, y, s, fg, bg)
	} else {
		ls := v.Buffer().Lines(r)
		s := v.Buffer().Substr(r)
		if len(ls) < 2 {
			s := fmt.Sprintf("%d characters selected", len(s))
			j = addString(j, y, s, fg, bg)
		} else {
			s := fmt.Sprintf("%d lines %d characters selected", len(ls), len(s))
			j = addString(j, y, s, fg, bg)
		}
	}

	if t.status_message != "" {
		s := fmt.Sprintf("; %s", t.status_message)
		addString(j, y, s, fg, bg)
	}
}

func (t *tbfe) renderView(v *backend.View, lay layout) {
	p := util.Prof.Enter("render")
	defer p.Exit()

	sx, sy, w, h := lay.x, lay.y, lay.width, lay.height
	vr := lay.visible
	runes := v.Buffer().Substr(vr)
	x, y := sx, sy
	ex, ey := sx+w, sy+h

	style, _ := v.Settings().Get("caret_style", "underline").(string)
	inverse, _ := v.Settings().Get("inverse_caret_state", false).(bool)

	caretStyle := getCaretStyle(style, inverse)
	caretBlink, _ := v.Settings().Get("caret_blink", true).(bool)
	if caretBlink && blink {
		caretStyle = 0
	}
	tabSize := 4
	ts := v.Settings().Get("tab_size", tabSize)
	// TODO(.): crikey...
	if i, ok := ts.(int); ok {
		tabSize = i
	} else if f, ok := ts.(float64); ok {
		tabSize = int(f)
	}

	lineNumbers, _ := v.Settings().Get("line_numbers", true).(bool)

	recipie := v.Transform(scheme, vr).Transcribe()

	fg, bg := defaultFg, defaultBg
	sel := v.Sel()

	line, _ := v.Buffer().RowCol(vr.Begin())
	eofline, _ := v.Buffer().RowCol(v.Buffer().Size())
	lineNumberRenderSize := len(intToRunes(eofline))

	for i, r := range runes {
		o := vr.Begin() + i
		curr := 0
		fg, bg = defaultFg, defaultBg

		if lineNumbers {
			renderLineNumber(&line, &x, y, lineNumberRenderSize, fg, bg)
		}

		for curr < len(recipie) && (o >= recipie[curr].Region.Begin()) {
			if o < recipie[curr].Region.End() {
				fg = palLut(textmate.Color(recipie[curr].Flavour.Foreground))
				bg = palLut(textmate.Color(recipie[curr].Flavour.Background))
			}
			curr++
		}
		iscursor := sel.Contains(Region{o, o})
		if iscursor {
			fg = fg | caretStyle
			termbox.SetCell(x, y, ' ', fg, bg)
		}
		if r == '\t' {
			add := (x + 1 + (tabSize - 1)) &^ (tabSize - 1)
			for x < add {
				if x < ex {
					termbox.SetCell(x, y, ' ', fg, bg)
				}
				// A long cursor looks weird
				fg = fg & ^(termbox.AttrUnderline | termbox.AttrReverse)
				x++
			}
			continue
		} else if r == '\n' {
			x = sx
			if y++; y > ey {
				break
			} else if lineNumbers {
				renderLineNumber(&line, &x, y, lineNumberRenderSize, fg, bg)
			}
			continue
		}
		if x < ex {
			termbox.SetCell(x, y, r, fg, bg)
		}
		x++
	}
	fg, bg = defaultFg, defaultBg
	// Need this if the cursor is at the end of the buffer
	o := vr.Begin() + len(runes)
	iscursor := sel.Contains(Region{o, o})
	if iscursor {
		fg = fg | caretStyle
		termbox.SetCell(x, y, ' ', fg, bg)
	}

	// restore original caretStyle before blink modification
	caretStyle = caretStyle
}

func (t *tbfe) renderView(v *backend.View, lay layout) {
	p := util.Prof.Enter("render")
	defer p.Exit()

	sx, sy, w, h := lay.x, lay.y, lay.width, lay.height
	vr := lay.visible
	runes := v.Buffer().Substr(vr)
	x, y := sx, sy
	ex, ey := sx+w, sy+h

	style, _ := v.Settings().Get("caret_style", "underline").(string)
	inverse, _ := v.Settings().Get("inverse_caret_state", false).(bool)

	caretStyle := getCaretStyle(style, inverse)
	oldCaretStyle := caretStyle

	caretBlink, _ := v.Settings().Get("caret_blink", true).(bool)
	if caretBlink && blink {
		caretStyle = 0
	}

	tabSize := 4
	if i, ok := v.Settings().Get("tab_size", tabSize).(int); ok {
		tabSize = i
	}

	lineNumbers, _ := v.Settings().Get("line_numbers", true).(bool)

	recipie := v.Transform(scheme, vr).Transcribe()

	fg, bg := defaultFg, defaultBg
	sel := v.Sel()

	line, _ := v.Buffer().RowCol(vr.Begin())
	eofline, _ := v.Buffer().RowCol(v.Buffer().Size())
	lineNumberRenderSize := len(intToRunes(eofline))

	for i, r := range runes {
		o := vr.Begin() + i
		curr := 0
		fg, bg = defaultFg, defaultBg

		if lineNumbers {
			renderLineNumber(&line, &x, y, lineNumberRenderSize, fg, bg)
		}

		// TODO: doc
		for curr < len(recipie) && (o >= recipie[curr].Region.Begin()) {
			if o < recipie[curr].Region.End() {
				fg = palLut(textmate.Color(recipie[curr].Flavour.Foreground))
				bg = palLut(textmate.Color(recipie[curr].Flavour.Background))
			}
			curr++
		}

		iscursor := sel.Contains(Region{o, o})
		if iscursor {
			fg = fg | caretStyle
			termbox.SetCell(x, y, ' ', fg, bg)
		}

		if r == '\t' {
			add := (x + 1 + (tabSize - 1)) &^ (tabSize - 1)
			for ; x < add; x++ {
				if x < ex {
					termbox.SetCell(x, y, ' ', fg, bg)
				}
				// A long cursor looks weird
				fg = fg & ^(termbox.AttrUnderline | termbox.AttrReverse)
			}
			continue
		} else if r == '\n' {
			x = sx
			if y++; y > ey {
				break
			} else if lineNumbers {
				// This results in additional calls to renderLineNumber.
				// Maybe just accumulate positions needing line numbers, rendering them
				// after the loop?
				renderLineNumber(&line, &x, y, lineNumberRenderSize, defaultFg, defaultBg)
			}
			continue
		}
		if x < ex {
			termbox.SetCell(x, y, r, fg, bg)
		}
		x++
	}
	fg, bg = defaultFg, defaultBg
	// Need this if the cursor is at the end of the buffer
	o := vr.Begin() + len(runes)
	iscursor := sel.Contains(Region{o, o})
	if iscursor {
		fg = fg | caretStyle
		termbox.SetCell(x, y, ' ', fg, bg)
	}

	// restore original caretStyle before blink modification
	caretStyle = oldCaretStyle

//.........這裏部分代碼省略.........

func (t *tbfe) renderView(v *backend.View, lay layout) {
	p := util.Prof.Enter("render")
	defer p.Exit()

	sx, sy, w, h := lay.x, lay.y, lay.width, lay.height
	vr := lay.visible
	runes := v.Buffer().Substr(vr)
	x, y := sx, sy
	ex, ey := sx+w, sy+h

	caretStyle := t.settings.caretStyle
	if t.settings.caretBlink && blink {
		t.settings.caretStyle = 0
	}

	recipie := v.Transform(scheme, vr).Transcribe()

	fg, bg := defaultFg, defaultBg
	sel := v.Sel()

	line, _ := v.Buffer().RowCol(vr.Begin())
	eofline, _ := v.Buffer().RowCol(v.Buffer().Size())
	lineNumberRenderSize := len(intToRunes(eofline))

	for i, r := range runes {
		o := vr.Begin() + i
		curr := 0
		fg, bg = defaultFg, defaultBg

		if t.settings.lineNumbers {
			renderLineNumber(&line, &x, y, lineNumberRenderSize, fg, bg)
		}

		for curr < len(recipie) && (o >= recipie[curr].Region.Begin()) {
			if o < recipie[curr].Region.End() {
				fg = palLut(textmate.Color(recipie[curr].Flavour.Foreground))
				bg = palLut(textmate.Color(recipie[curr].Flavour.Background))
			}
			curr++
		}
		if sel.Contains(Region{o, o}) {
			fg = fg | t.settings.caretStyle
		}
		if r == '\t' {
			add := (x + 1 + (t.settings.tabSize - 1)) &^ (t.settings.tabSize - 1)
			for x < add {
				if x < ex {
					termbox.SetCell(x, y, ' ', fg, bg)
				}
				fg = fg &^ termbox.AttrUnderline // Just looks weird with a long underline
				x++
			}
			continue
		} else if r == '\n' {
			x = sx
			y++
			if y > ey {
				break
			}
			continue
		}
		if x < ex {
			termbox.SetCell(x, y, r, fg, bg)
		}
		x++
	}

	// restore original caretStyle before blink modification
	t.settings.caretStyle = caretStyle
}

func (t *tbfe) GetSelectionMessage(v *backend.View) map[string]interface{} {
	return map[string]interface{}{
		"type": "selection",
		"sel":  v.Sel().Regions(),
	}
}

func (t *tbfe) loop() {

	var (
		ed = t.setupEditor()
		c  = ed.Console()
		w  = ed.NewWindow()
		v  *backend.View
	)

	if len(os.Args) > 1 {
		v = createNewView(os.Args[1], w)
	} else {
		v = w.NewFile()
	}

	sel := v.Sel()

	t.settings = getSettings(v)
	c.Buffer().AddCallback(t.scroll)

	t.setupCallbacks(v)
	loadTextMateScheme()
	setColorMode()
	setSchemeSettings()
	sel.Clear()
	sel.Add(Region{0, 0})

	evchan := make(chan termbox.Event, 32)
	defer func() {
		close(evchan)
		fmt.Println(util.Prof)
	}()

	go func() {
		for {
			evchan <- termbox.PollEvent()
		}
	}()

	{
		w, h := termbox.Size()
		t.lock.Lock()
		t.layout[v] = layout{0, 0, w, h - console_height - 1, Region{}, 0}
		t.layout[c] = layout{0, h - console_height + 1, w, console_height - 5, Region{}, 0}
		t.lock.Unlock()
		t.Show(v, Region{1, 1})
	}
	t.Show(v, Region{100, 100})
	t.Show(v, Region{1, 1})

	go func() {
		ed.Init()
		sublime.Init()
	}()

	for {
		p := util.Prof.Enter("mainloop")

		blink_phase := time.Second
		if p, ok := ed.Settings().Get("caret_blink_phase", 1.0).(float64); ok {
			blink_phase = time.Duration(float64(time.Second) * p)
		}

		// Divided by two since we're only doing a simple toggle blink
		timer := time.NewTimer(blink_phase / 2)
		select {
		case ev := <-evchan:
			mp := util.Prof.Enter("evchan")
			limit := 3
		loop:
			switch ev.Type {
			case termbox.EventError:
				log4go.Debug("error occured")
				return
			case termbox.EventKey:
				var kp backend.KeyPress

				if ev.Ch != 0 {
					kp.Key = backend.Key(ev.Ch)
				} else if v2, ok := lut[ev.Key]; ok {
					kp = v2
				} else {
					break
				}

				if ev.Key == termbox.KeyCtrlQ {
					return
				}
				ed.HandleInput(kp)

				blink = false
			}
			if len(evchan) > 0 {
				limit--
				ev = <-evchan
				goto loop
			}
			mp.Exit()
		case <-timer.C:
			// TODO(q): Shouldn't redraw if blink is disabled...
//.........這裏部分代碼省略.........