func (t *Terminal) printPreview() {
if !t.isPreviewEnabled() {
return
}
t.pwindow.Erase()
skip := t.previewer.offset
extractColor(t.previewer.text, nil, func(str string, ansi *ansiState) bool {
if skip > 0 {
newlines := numLinesMax(str, skip)
if skip <= newlines {
for i := 0; i < skip; i++ {
str = str[strings.Index(str, "\n")+1:]
}
skip = 0
} else {
skip -= newlines
return true
}
}
if !t.preview.wrap {
lines := strings.Split(str, "\n")
for i, line := range lines {
limit := t.pwindow.Width
if tui.DoesAutoWrap() {
limit -= 1
}
if i == 0 {
limit -= t.pwindow.X()
}
trimmed, _ := trimRight([]rune(line), limit)
lines[i] = string(trimmed)
}
str = strings.Join(lines, "\n")
}
if ansi != nil && ansi.colored() {
return t.pwindow.CFill(str, ansi.fg, ansi.bg, ansi.attr)
}
return t.pwindow.Fill(str)
})
if t.previewer.lines > t.pwindow.Height {
offset := fmt.Sprintf("%d/%d", t.previewer.offset+1, t.previewer.lines)
t.pwindow.Move(0, t.pwindow.Width-len(offset))
t.pwindow.CPrint(tui.ColInfo, tui.Reverse, offset)
}
}
func (t *Terminal) resizeWindows() {
screenWidth := tui.MaxX()
screenHeight := tui.MaxY()
marginInt := [4]int{}
for idx, sizeSpec := range t.margin {
if sizeSpec.percent {
var max float64
if idx%2 == 0 {
max = float64(screenHeight)
} else {
max = float64(screenWidth)
}
marginInt[idx] = int(max * sizeSpec.size * 0.01)
} else {
marginInt[idx] = int(sizeSpec.size)
}
}
adjust := func(idx1 int, idx2 int, max int, min int) {
if max >= min {
margin := marginInt[idx1] + marginInt[idx2]
if max-margin < min {
desired := max - min
marginInt[idx1] = desired * marginInt[idx1] / margin
marginInt[idx2] = desired * marginInt[idx2] / margin
}
}
}
minAreaWidth := minWidth
minAreaHeight := minHeight
if t.isPreviewEnabled() {
switch t.preview.position {
case posUp, posDown:
minAreaHeight *= 2
case posLeft, posRight:
minAreaWidth *= 2
}
}
adjust(1, 3, screenWidth, minAreaWidth)
adjust(0, 2, screenHeight, minAreaHeight)
if t.window != nil {
t.window.Close()
}
if t.bwindow != nil {
t.bwindow.Close()
t.pwindow.Close()
}
width := screenWidth - marginInt[1] - marginInt[3]
height := screenHeight - marginInt[0] - marginInt[2]
if t.isPreviewEnabled() {
createPreviewWindow := func(y int, x int, w int, h int) {
t.bwindow = tui.NewWindow(y, x, w, h, true)
pwidth := w - 4
// ncurses auto-wraps the line when the cursor reaches the right-end of
// the window. To prevent unintended line-wraps, we use the width one
// column larger than the desired value.
if !t.preview.wrap && tui.DoesAutoWrap() {
pwidth += 1
}
t.pwindow = tui.NewWindow(y+1, x+2, pwidth, h-2, false)
}
switch t.preview.position {
case posUp:
pheight := calculateSize(height, t.preview.size, minHeight, 3)
t.window = tui.NewWindow(
marginInt[0]+pheight, marginInt[3], width, height-pheight, false)
createPreviewWindow(marginInt[0], marginInt[3], width, pheight)
case posDown:
pheight := calculateSize(height, t.preview.size, minHeight, 3)
t.window = tui.NewWindow(
marginInt[0], marginInt[3], width, height-pheight, false)
createPreviewWindow(marginInt[0]+height-pheight, marginInt[3], width, pheight)
case posLeft:
pwidth := calculateSize(width, t.preview.size, minWidth, 5)
t.window = tui.NewWindow(
marginInt[0], marginInt[3]+pwidth, width-pwidth, height, false)
createPreviewWindow(marginInt[0], marginInt[3], pwidth, height)
case posRight:
pwidth := calculateSize(width, t.preview.size, minWidth, 5)
t.window = tui.NewWindow(
marginInt[0], marginInt[3], width-pwidth, height, false)
createPreviewWindow(marginInt[0], marginInt[3]+width-pwidth, pwidth, height)
}
} else {
t.window = tui.NewWindow(
marginInt[0],
marginInt[3],
width,
height, false)
}
}