// SetRune writes a rune at the given point, relative to the top-left
// corner of the terminal. It checks if the position is valid and applies
// the gui's colors.
func (g *Gui) SetRune(x, y int, ch rune) error {
if x < 0 || y < 0 || x >= g.maxX || y >= g.maxY {
return errors.New("invalid point")
}
termbox.SetCell(x, y, ch, termbox.Attribute(g.FgColor), termbox.Attribute(g.BgColor))
return nil
}
// Flush updates the gui, re-drawing frames and buffers.
func (g *Gui) Flush() error {
if g.layout == nil {
return errors.New("Null layout")
}
termbox.Clear(termbox.Attribute(g.FgColor), termbox.Attribute(g.BgColor))
g.maxX, g.maxY = termbox.Size()
if err := g.layout(g); err != nil {
return err
}
for _, v := range g.views {
if err := g.drawFrame(v); err != nil {
return err
}
if err := g.draw(v); err != nil {
return err
}
}
if err := g.drawIntersections(); err != nil {
return err
}
termbox.Flush()
return nil
}
// clearRunes erases all the cells in the view.
func (v *View) clearRunes() {
maxX, maxY := v.Size()
for x := 0; x < maxX; x++ {
for y := 0; y < maxY; y++ {
termbox.SetCell(v.x0+x+1, v.y0+y+1, ' ',
termbox.Attribute(v.fgColor), termbox.Attribute(v.bgColor))
}
}
}
// setRune writes a rune at the given point, relative to the view. It
// checks if the position is valid and applies the view's colors, taking
// into account if the cell must be highlighted.
func (v *View) SetRune(x, y int, ch rune) error {
maxX, maxY := v.Size()
if x < 0 || x >= maxX || y < 0 || y >= maxY {
return errors.New("invalid point")
}
var fgColor, bgColor Attribute
if v.Highlight && y == v.cy {
fgColor = v.selFgColor
bgColor = v.selBgColor
} else {
fgColor = v.fgColor
bgColor = v.bgColor
}
termbox.SetCell(v.x0+x+1, v.y0+y+1, ch,
termbox.Attribute(fgColor), termbox.Attribute(bgColor))
return nil
}