func (f *frontend) VisibleRegion(bv *backend.View) Region {
// TODO
return Region{0, bv.Size()}
}
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.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)
recipe := v.Transform(vr).Transcribe()
fg, bg := defaultFg, defaultBg
sel := v.Sel()
line, _ := v.RowCol(vr.Begin())
eofline, _ := v.RowCol(v.Size())
lineNumberRenderSize := len(intToRunes(eofline))
for i, r := range runes {
fg, bg = defaultFg, defaultBg
if lineNumbers {
renderLineNumber(&line, &x, y, lineNumberRenderSize, fg, bg)
}
curr := 0
o := vr.Begin() + i
for curr < len(recipe) && (o >= recipe[curr].Region.Begin()) {
if o < recipe[curr].Region.End() {
fg = palLut(render.Colour(recipe[curr].Flavour.Foreground))
bg = palLut(render.Colour(recipe[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
if rs := sel.Regions(); len(rs) > 0 {
if r := rs[len(rs)-1]; !vr.Covers(r) {
t.Show(v, r)
}
}
fg, bg = defaultFg, palLut(render.Colour{28, 29, 26, 1})
y = t.window_layout.height - statusbarHeight
// Draw status bar bottom of window
for i := 0; i < t.window_layout.width; i++ {
termbox.SetCell(i, y, ' ', fg, bg)
}
go t.renderLStatus(v, y, fg, bg)
// The right status
rns := []rune(fmt.Sprintf("Tab Size:%d %s", tabSize, "Go"))
x = t.window_layout.width - 1 - len(rns)
addRunes(x, y, rns, fg, bg)
}