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package main
import (
"image"
"errors"
"image/color"
"hhvn.uk/hbspbar/config"
"hhvn.uk/hbspbar/status"
"hhvn.uk/hbspbar/bspc"
"hhvn.uk/hbspbar/drw"
)
var bars map[int]*bar = make(map[int]*bar)
type bar struct {
id int
w *drw.Window
i *image.RGBA
}
var (
ErrNoState = errors.New("attempted to create a bar with uninitialized state")
ErrNoSuchBar = errors.New("attempted to destroy non-existant bar")
)
func (b *bar) init(id int, state *bspc.State) error {
b.id = id
b.i = nil
mon, err := b.getmon(state)
if err != nil { return err }
go mon.TopPadding(config.H)
geom := mon.Rectangle
b.w, err = drw.WindowCreate(geom.X, geom.Y, geom.Width, config.H)
if err != nil { return err }
rect := image.Rect(0, 0, int(mon.Rectangle.Width), int(config.H))
b.i = image.NewRGBA(rect)
return nil
}
func (b *bar) destroy(state *bspc.State) {
mon, _ := b.getmon(state)
if (mon != nil) {
mon.TopPadding(0)
}
}
func (b bar) getmon(state *bspc.State) (*bspc.Monitor, error) {
return state.GetMon(b.id)
}
func (b *bar) drawText(x int, col color.Color, text string) (int, error) {
return drw.DrawText(b.i, x, col, text)
}
func (b *bar) drawRect(x, y, w, h int, c color.Color, fill bool) {
drw.DrawRect(b.i, x, y, w, h, c, fill)
}
func (b bar) draw(state *bspc.State, blocks []*status.Block) error {
var bg color.Color
var filled bool
if blocks == nil {
return nil
}
mon, err := b.getmon(state)
if err != nil {
return err
}
// Dimensions of drawing space
cx := 0
w := int(mon.Rectangle.Width)
h := int(config.H)
// Draw background
b.drawRect(0, 0, w, h, config.Bg, true)
// Monitor
montext := mon.Name
monw := 6 + drw.TextWidth(montext) + 8
if mon.Focused {
bg = config.Sel
} else {
bg = config.UnselMon
}
b.drawRect(cx, 0, monw, h, bg, true)
b.drawText(cx + 6, config.Fg, montext)
cx += monw
// Desktops
boxw := 4
ds := len(mon.Desktops)
dw := 4 + (4 + boxw + 2 + 3) * ds + 5
for i := 0; i < ds; i++ {
dw += drw.TextWidth(mon.Desktops[i].Name)
}
cx += 4
for i := 0; i < ds; i++ {
d := mon.Desktops[i]
cx += 5
if d.Focused {
bg = config.Sel
} else {
bg = config.FgDark
}
filled = d.Root != nil
b.drawRect(cx, 3, boxw, h - 7, bg, filled)
cx += boxw + 2
ax, _ := b.drawText(cx, config.Fg, d.Name)
cx += ax + 2
}
cx = int(mon.Rectangle.Width)
for _, s := range blocks {
if s != nil {
cx -= s.W
cx -= config.StatusPad
}
}
b.drawRect(cx, 0, int(mon.Rectangle.Width) - cx, int(config.H),
config.Status, true)
cx += config.StatusPad / 2
for _, s := range blocks {
if s != nil {
drw.AddImg(b.i, cx, s.W, s.I)
cx += s.W + config.StatusPad
}
}
b.w.Paint(b.i)
return nil
}
func Create(state *bspc.State, id int) (error) {
var b bar
if state == nil {
return ErrNoState
}
if _, ok := bars[id]; ok {
// Already created, whatever.
return nil
}
if err := b.init(id, state); err != nil {
return err
}
bars[b.id] = &b
return nil
}
func Redraw(state *bspc.State, blocks []*status.Block) {
for _, b := range bars {
b.draw(state, blocks)
}
}
func Destroy(state *bspc.State, id int) error {
b, ok := bars[id]
if !ok {
return ErrNoSuchBar
}
b.destroy(state)
delete(bars, id)
return nil
}
func Cleanup(state *bspc.State) {
if state != nil {
for _, b := range bars {
b.destroy(state)
}
}
}
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