path: root/Godeps/_workspace/src/github.com/nsf/termbox-go/termbox_common.go

package termbox

// private API, common OS agnostic part

type cellbuf struct {
    width  int
    height int
    cells  []Cell
}

func (this *cellbuf) init(width, height int) {
    this.width = width
    this.height = height
    this.cells = make([]Cell, width*height)
}

func (this *cellbuf) resize(width, height int) {
    if this.width == width && this.height == height {
        return
    }

    oldw := this.width
    oldh := this.height
    oldcells := this.cells

    this.init(width, height)
    this.clear()

    minw, minh := oldw, oldh

    if width < minw {
        minw = width
    }
    if height < minh {
        minh = height
    }

    for i := 0; i < minh; i++ {
        srco, dsto := i*oldw, i*width
        src := oldcells[srco : srco+minw]
        dst := this.cells[dsto : dsto+minw]
        copy(dst, src)
    }
}

func (this *cellbuf) clear() {
    for i := range this.cells {
        c := &this.cells[i]
        c.Ch = ' '
        c.Fg = foreground
        c.Bg = background
    }
}

const cursor_hidden = -1

func is_cursor_hidden(x, y int) bool {
    return x == cursor_hidden || y == cursor_hidden
}