func (ct *CommandTray) Init() {
var err error
ct.img = xgraphics.New(ct.X, image.Rect(0, 0, ct.Width, ct.Height))
ct.pu_img = xgraphics.New(ct.X, image.Rect(0, 0, ct.Width, ct.Height*10))
ct.window, err = xwindow.Create(ct.X, ct.Parent.Id)
utils.FailMeMaybe(err)
utils.FailMeMaybe(ct.img.XSurfaceSet(ct.window.Id))
ct.window.Move(ct.Position, 0)
ct.window.Resize(ct.Width, ct.Height)
ct.window.Map()
}
// DrawText is a convenience function that will create a new image, render
// the provided text to it, paint the image to the provided window, and resize
// the window to fit the text snugly.
//
// An error can occur when rendering the text to an image.
func DrawText(win *xwindow.Window, font *truetype.Font, size float64,
fontClr, bgClr render.Color, text string) error {
// BUG(burntsushi): If `text` is zero-length, very bad things happen.
if len(text) == 0 {
text = " "
}
// Over estimate the extents.
ew, eh := xgraphics.Extents(font, size, text)
// Create an image using the over estimated extents.
img := xgraphics.New(win.X, image.Rect(0, 0, ew, eh))
xgraphics.BlendBgColor(img, bgClr.ImageColor())
// Now draw the text, grab the (x, y) position advanced by the text, and
// check for an error in rendering.
_, _, err := img.Text(0, 0, fontClr.ImageColor(), size, font, text)
if err != nil {
return err
}
// Resize the window to the geometry determined by (x, y).
win.Resize(ew, eh)
// Now draw the image to the window and destroy it.
img.XSurfaceSet(win.Id)
// subimg := img.SubImage(image.Rect(0, 0, ew, eh))
img.XDraw()
img.XPaint(win.Id)
img.Destroy()
return nil
}
// New allocates and initializes a new DockApp. NewDockApp does not initialize
// the window contents and does not map the window to the display screen. The
// window is mapped to the screen when the Main method is called on the
// returned DockApp.
func New(x *xgbutil.XUtil, rect image.Rectangle) (*DockApp, error) {
win, err := xwindow.Generate(x)
if err != nil {
log.Fatalf("generate window: %v", err)
}
win.Create(x.RootWin(), 0, 0, rect.Size().X, rect.Size().Y, 0)
// Set WM hints so that Openbox puts the window into the dock.
hints := &icccm.Hints{
Flags: icccm.HintState | icccm.HintIconWindow,
InitialState: icccm.StateWithdrawn,
IconWindow: win.Id,
WindowGroup: win.Id,
}
err = icccm.WmHintsSet(x, win.Id, hints)
if err != nil {
win.Destroy()
return nil, fmt.Errorf("wm hints: %v", err)
}
img := xgraphics.New(x, rect)
err = img.XSurfaceSet(win.Id)
if err != nil {
img.Destroy()
win.Destroy()
return nil, fmt.Errorf("xsurface set: %v", err)
}
app := &DockApp{
x: x,
img: img,
win: win,
}
return app, nil
}
// DrawText is a convenience function that will create a new image, render
// the provided text to it, paint the image to the provided window, and resize
// the window to fit the text snugly.
//
// An error can occur when rendering the text to an image.
func DrawText(win *xwindow.Window, font *truetype.Font, size float64,
fontClr, bgClr color.RGBA, text string) error {
// Over estimate the extents.
ew, eh := xgraphics.TextMaxExtents(font, size, text)
eh += misc.TextBreathe // <-- this is the bug
// Create an image using the over estimated extents.
img := xgraphics.New(win.X, image.Rect(0, 0, ew, eh))
xgraphics.BlendBgColor(img, bgClr)
// Now draw the text, grab the (x, y) position advanced by the text, and
// check for an error in rendering.
x, y, err := img.Text(0, 0, fontClr, size, font, text)
if err != nil {
return err
}
// Resize the window to the geometry determined by (x, y).
w, h := x, y+misc.TextBreathe // <-- also part of the bug
win.Resize(w, h)
// Now draw the image to the window and destroy it.
img.XSurfaceSet(win.Id)
subimg := img.SubImage(image.Rect(0, 0, w, h))
subimg.XDraw()
subimg.XPaint(win.Id)
img.Destroy()
return nil
}
// NewInput constructs Input values. It needs an X connection, a parent window,
// the width of the input box, and theme information related for the font
// and background. Padding separating the text and the edges of the window
// may also be specified.
//
// While NewInput returns an *Input, a Input value also has an xwindow.Window
// value embedded into it. Thus, an Input can also be treated as a normal
// window on which you can assign callbacks, close, destroy, etc.
//
// As with all windows, the Input window should be destroyed when it is no
// longer in used.
func NewInput(X *xgbutil.XUtil, parent xproto.Window, width int, padding int,
font *truetype.Font, fontSize float64,
fontColor, bgColor render.Color) *Input {
_, height := xgraphics.TextMaxExtents(font, fontSize, "M")
height += misc.TextBreathe
width, height = width+2*padding, height+2*padding
img := xgraphics.New(X, image.Rect(0, 0, width, height))
win := xwindow.Must(xwindow.Create(X, parent))
win.Listen(xproto.EventMaskKeyPress)
win.Resize(width, height)
ti := &Input{
Window: win,
img: img,
Text: make([]rune, 0, 50),
font: font,
fontSize: fontSize,
fontColor: fontColor,
bgColor: bgColor,
padding: padding,
}
ti.Render()
return ti
}
// NewImage returns a new image canvas
// that draws to the given image. The
// minimum point of the given image
// should probably be 0,0.
func NewImage(img draw.Image, name string) (*Canvas, error) {
w := float64(img.Bounds().Max.X - img.Bounds().Min.X)
h := float64(img.Bounds().Max.Y - img.Bounds().Min.Y)
X, err := xgbutil.NewConn()
if err != nil {
return nil, err
}
keybind.Initialize(X)
ximg := xgraphics.New(X, image.Rect(0, 0, int(w), int(h)))
err = ximg.CreatePixmap()
if err != nil {
return nil, err
}
painter := NewPainter(ximg)
gc := draw2d.NewGraphicContextWithPainter(ximg, painter)
gc.SetDPI(dpi)
gc.Scale(1, -1)
gc.Translate(0, -h)
wid := ximg.XShowExtra(name, true)
go func() {
xevent.Main(X)
}()
c := &Canvas{
Canvas: vgimg.NewWith(vgimg.UseImageWithContext(img, gc)),
x: X,
ximg: ximg,
wid: wid,
}
vg.Initialize(c)
return c, nil
}
func NewDisplay(width, height, border, heading int, name string) (*Display, error) {
d := new(Display)
d.w = float64(width)
d.h = float64(height)
d.bord = float64(border)
d.head = float64(heading)
X, err := xgbutil.NewConn()
if err != nil {
return nil, err
}
keybind.Initialize(X)
d.ximg = xgraphics.New(X, image.Rect(
0,
0,
border*2+width,
border*2+heading+height))
err = d.ximg.CreatePixmap()
if err != nil {
return nil, err
}
painter := NewXimgPainter(d.ximg)
d.gc = draw2d.NewGraphicContextWithPainter(d.ximg, painter)
d.gc.Save()
d.gc.SetStrokeColor(color.White)
d.gc.SetFillColor(color.White)
d.gc.Clear()
d.wid = d.ximg.XShowExtra(name, true)
d.x = X
go func() {
xevent.Main(X)
}()
return d, nil
}
func main() {
X, err := xgbutil.NewConn()
if err != nil {
log.Fatal(err)
}
// Load some font. You may need to change the path depending upon your
// system configuration.
fontReader, err := os.Open(fontPath)
if err != nil {
log.Fatal(err)
}
// Now parse the font.
font, err := xgraphics.ParseFont(fontReader)
if err != nil {
log.Fatal(err)
}
// Create some canvas.
ximg := xgraphics.New(X, image.Rect(0, 0, canvasWidth, canvasHeight))
ximg.For(func(x, y int) xgraphics.BGRA {
return bg
})
// Now write the text.
_, _, err = ximg.Text(10, 10, fg, size, font, msg)
if err != nil {
log.Fatal(err)
}
// Compute extents of first line of text.
_, firsth := xgraphics.Extents(font, size, msg)
// Now show the image in its own window.
win := ximg.XShowExtra("Drawing text using xgraphics", true)
// Now draw some more text below the above and demonstrate how to update
// only the region we've updated.
_, _, err = ximg.Text(10, 10+firsth, fg, size, font, "Some more text.")
if err != nil {
log.Fatal(err)
}
// Now compute extents of the second line of text, so we know which region
// to update.
secw, sech := xgraphics.Extents(font, size, "Some more text.")
// Now repaint on the region that we drew text on. Then update the screen.
bounds := image.Rect(10, 10+firsth, 10+secw, 10+firsth+sech)
ximg.SubImage(bounds).XDraw()
ximg.XPaint(win.Id)
// All we really need to do is block, which could be achieved using
// 'select{}'. Invoking the main event loop however, will emit error
// message if anything went seriously wrong above.
xevent.Main(X)
}
func NewSolid(X *xgbutil.XUtil, bgColor Color, width, height int) *Image {
img := New(xgraphics.New(X, image.Rect(0, 0, width, height)))
r, g, b := bgColor.RGB8()
img.ForExp(func(x, y int) (uint8, uint8, uint8, uint8) {
return r, g, b, 0xff
})
return img
}
func NewGUI(board *Board) *GUI {
gui := new(GUI)
X, _ := xgbutil.NewConn()
gui.canvas = xgraphics.New(X, image.Rect(0, 0, board.Width(), board.Height()))
gui.queue = make(map[Pos]bool, board.Width()*board.Height())
gui.win = gui.canvas.XShow()
gui.board = board
board.onUpdate = func(p Pos) { gui.Update(p) }
gui.StartLoop()
return gui
}
func NewWindow(width, height int) (w *Window, err error) {
w = new(Window)
w.width, w.height = width, height
w.xu, err = xgbutil.NewConn()
if err != nil {
return
}
w.conn = w.xu.Conn()
screen := w.xu.Screen()
w.win, err = xwindow.Generate(w.xu)
if err != nil {
return
}
err = w.win.CreateChecked(screen.Root, 600, 500, width, height, 0)
if err != nil {
return
}
w.win.Listen(AllEventsMask)
err = icccm.WmProtocolsSet(w.xu, w.win.Id, []string{"WM_DELETE_WINDOW"})
if err != nil {
fmt.Println(err)
err = nil
}
w.bufferLck = &sync.Mutex{}
w.buffer = xgraphics.New(w.xu, image.Rect(0, 0, width, height))
w.buffer.XSurfaceSet(w.win.Id)
keyMap, modMap := keybind.MapsGet(w.xu)
keybind.KeyMapSet(w.xu, keyMap)
keybind.ModMapSet(w.xu, modMap)
w.events = make(chan interface{})
w.SetIcon(Gordon)
w.SetIconName("Go")
go w.handleEvents()
return
}
// NewBackground creates an xgraphics.Image which spans the entire screen,
// initialized to black.
func NewBackground(X *xgbutil.XUtil) (*xgraphics.Image, error) {
res, err := randr.GetScreenResources(X.Conn(), X.RootWin()).Reply()
if err != nil {
return nil, err
}
var bgRect image.Rectangle
for _, output := range res.Outputs {
r, err := util.OutputRect(X, output)
// NOTE: It doesn't really matter if this returns a Zero Rectangle.
if err != nil {
return nil, err
}
bgRect = bgRect.Union(r)
}
return xgraphics.New(X, bgRect), nil
}
func (c *Clock) Init() {
var err error
c.img = xgraphics.New(c.X, image.Rect(0, 0, c.Width, c.Height))
c.window, err = xwindow.Create(c.X, c.Parent.Id)
utils.FailMeMaybe(err)
c.window.Resize(c.Width, c.Height)
c.window.Move(c.Position, 0)
c.img.XSurfaceSet(c.window.Id)
c.window.Map()
c.Draw()
go c.tickTock()
}
func main() {
runtime.GOMAXPROCS(64)
X, err := xgbutil.NewConn()
if err != nil {
log.Fatal(err)
}
keybind.Initialize(X)
font := loadFont("/usr/share/fonts/truetype/freefont/FreeMono.ttf")
font.Color = xgraphics.BGRA{B: 0x00, G: 0xff, R: 0x00, A: 0xff}
font.Size = 12.0
ximage := xgraphics.New(X, image.Rect(0, 0, 300, 300))
ximage.CreatePixmap()
window, obscured := makeWindow(ximage)
battery := batteryItem(font, 10, ximage, window)
cpu := cpuItem(font, 30, ximage, window)
memory := memoryItem(font, 50, ximage, window)
before, after, quit := xevent.MainPing(X)
loop:
for {
select {
case <-before:
<-after
case <-quit:
break loop
case text := <-battery.Text:
if *obscured {
continue loop
}
battery.update(text)
case text := <-cpu.Text:
if *obscured {
continue loop
}
cpu.update(text)
case text := <-memory.Text:
if *obscured {
continue loop
}
memory.update(text)
}
}
}
func (sb *StatusBar) Init() {
sb.img = xgraphics.New(sb.X, image.Rect(0, 0, sb.Width, sb.Height))
var err error
sb.window, err = xwindow.Create(sb.X, sb.Parent.Id)
utils.FailMeMaybe(err)
sb.window.Move(sb.Position, 0)
sb.window.Resize(sb.Width, sb.Height)
sb.window.Map()
sb.img.XSurfaceSet(sb.window.Id)
utils.FailMeMaybe(sb.initTray())
sb.Draw()
}
func NewBorder(X *xgbutil.XUtil, borderType int, borderColor,
bgColor Color, width, height, gradientType, gradientDir int) *Image {
img := New(xgraphics.New(X, image.Rect(0, 0, width, height)))
// bgClr could be a gradient!
if bgColor.IsGradient() {
img.Gradient(gradientType, gradientDir, bgColor)
} else {
r, g, b := bgColor.RGB8()
img.ForExp(func(x, y int) (uint8, uint8, uint8, uint8) {
return r, g, b, 0xff
})
}
img.ThinBorder(borderType, borderColor)
return img
}
func NewCorner(X *xgbutil.XUtil, borderType int, borderColor,
bgColor Color, width, height, diagonal int) *Image {
// If bgColor isn't a gradient, then we can cheat
if !bgColor.IsGradient() {
return NewBorder(X, borderType, borderColor, bgColor,
width, height, 0, 0)
}
img := New(xgraphics.New(X, image.Rect(0, 0, width, height)))
// aliases for convenience
vert, horz := GradientVert, GradientHorz
reg, rev := GradientRegular, GradientReverse
// for Top Left to Bottom Right diagonals
belowTLDiag := func(x, y int) bool { return y > x }
aboveTLDiag := func(x, y int) bool { return y <= x }
// for Bottom Left to Top Right diagonals
belowBLDiag := func(x, y int) bool { return y > (width - x) }
aboveBLDiag := func(x, y int) bool { return y <= (width - x) }
switch diagonal {
case DiagBottomLeft:
img.GradientFunc(horz, reg, bgColor, aboveBLDiag)
img.GradientFunc(vert, rev, bgColor, belowBLDiag)
case DiagTopRight:
img.GradientFunc(vert, reg, bgColor, aboveBLDiag)
img.GradientFunc(horz, rev, bgColor, belowBLDiag)
case DiagBottomRight:
img.GradientFunc(horz, rev, bgColor, aboveTLDiag)
img.GradientFunc(vert, rev, bgColor, belowTLDiag)
default: // DiagTopLeft:
img.GradientFunc(vert, reg, bgColor, aboveTLDiag)
img.GradientFunc(horz, reg, bgColor, belowTLDiag)
}
img.ThinBorder(borderType, borderColor)
return img
}
// NewImage returns a new image canvas
// that draws to the given image. The
// minimum point of the given image
// should probably be 0,0.
func NewImage(img draw.Image, name string) (*XImgCanvas, error) {
w := float64(img.Bounds().Max.X - img.Bounds().Min.X)
h := float64(img.Bounds().Max.Y - img.Bounds().Min.Y)
X, err := xgbutil.NewConn()
if err != nil {
return nil, err
}
keybind.Initialize(X)
ximg := xgraphics.New(X, image.Rect(0, 0, int(w), int(h)))
err = ximg.CreatePixmap()
if err != nil {
return nil, err
}
painter := NewXimgPainter(ximg)
gc := draw2d.NewGraphicContextWithPainter(ximg, painter)
gc.SetDPI(dpi)
gc.Scale(1, -1)
gc.Translate(0, -h)
wid := ximg.XShowExtra(name, true)
go func() {
xevent.Main(X)
}()
c := &XImgCanvas{
gc: gc,
w: vg.Inches(w / dpi),
h: vg.Inches(h / dpi),
color: []color.Color{color.Black},
x: X,
ximg: ximg,
wid: wid,
}
vg.Initialize(c)
return c, nil
}
// paintGradient creates a new xgraphics.Image value and draws a gradient
// starting at color 'start' and ending at color 'end'.
//
// Since xgraphics.Image values use pixmaps and pixmaps cannot be resized,
// a new pixmap must be allocated for each resize event.
func paintGradient(X *xgbutil.XUtil, wid xproto.Window, width, height int,
start, end color.RGBA) {
ximg := xgraphics.New(X, image.Rect(0, 0, width, height))
// Now calculate the increment step between each RGB channel in
// the start and end colors.
rinc := (0xff * (int(end.R) - int(start.R))) / width
ginc := (0xff * (int(end.G) - int(start.G))) / width
binc := (0xff * (int(end.B) - int(start.B))) / width
// Now apply the increment to each "column" in the image.
// Using 'ForExp' allows us to bypass the creation of a color.BGRA value
// for each pixel in the image.
ximg.ForExp(func(x, y int) (uint8, uint8, uint8, uint8) {
return uint8(int(start.B) + (binc*x)/0xff),
uint8(int(start.G) + (ginc*x)/0xff),
uint8(int(start.R) + (rinc*x)/0xff),
0xff
})
// Set the surface to paint on for ximg.
// (This simply sets the background pixmap of the window to the pixmap
// used by ximg.)
ximg.XSurfaceSet(wid)
// XDraw will draw the contents of ximg to its corresponding pixmap.
ximg.XDraw()
// XPaint will "clear" the window provided so that it shows the updated
// pixmap.
ximg.XPaint(wid)
// Since we will not reuse ximg, we must destroy its pixmap.
ximg.Destroy()
}
func (t *Tracker) Init() {
var err error
t.img = xgraphics.New(t.X, image.Rect(0, 0, t.Size, t.Size))
t.window, err = xwindow.Create(t.X, t.Parent.Id)
utils.FailMeMaybe(err)
t.window.Resize(t.Size, t.Size)
t.window.Move(t.Position, 0)
t.img.XSurfaceSet(t.window.Id)
t.window.Map()
t.stopMe = true
l := startup.Listener{
X: t.X,
Callbacks: t,
}
l.Initialize()
t.Draw()
}
func (w *Window) handleEvents() {
var noX int32 = 1<<31 - 1
noX++
var lastX, lastY int32 = noX, 0
var button wde.Button
downKeys := map[string]bool{}
for {
e, err := w.conn.WaitForEvent()
if err != nil {
fmt.Println("[go.wde X error] ", err)
continue
}
switch e := e.(type) {
case xproto.ButtonPressEvent:
button = button | buttonForDetail(e.Detail)
var bpe wde.MouseDownEvent
bpe.Which = buttonForDetail(e.Detail)
bpe.Where.X = int(e.EventX)
bpe.Where.Y = int(e.EventY)
lastX = int32(e.EventX)
lastY = int32(e.EventY)
w.events <- bpe
case xproto.ButtonReleaseEvent:
button = button & ^buttonForDetail(e.Detail)
var bue wde.MouseUpEvent
bue.Which = buttonForDetail(e.Detail)
bue.Where.X = int(e.EventX)
bue.Where.Y = int(e.EventY)
lastX = int32(e.EventX)
lastY = int32(e.EventY)
w.events <- bue
case xproto.LeaveNotifyEvent:
var wee wde.MouseExitedEvent
wee.Where.X = int(e.EventX)
wee.Where.Y = int(e.EventY)
if lastX != noX {
wee.From.X = int(lastX)
wee.From.Y = int(lastY)
} else {
wee.From.X = wee.Where.X
wee.From.Y = wee.Where.Y
}
lastX = int32(e.EventX)
lastY = int32(e.EventY)
w.events <- wee
case xproto.EnterNotifyEvent:
var wee wde.MouseEnteredEvent
wee.Where.X = int(e.EventX)
wee.Where.Y = int(e.EventY)
if lastX != noX {
wee.From.X = int(lastX)
wee.From.Y = int(lastY)
} else {
wee.From.X = wee.Where.X
wee.From.Y = wee.Where.Y
}
lastX = int32(e.EventX)
lastY = int32(e.EventY)
w.events <- wee
case xproto.MotionNotifyEvent:
var mme wde.MouseMovedEvent
mme.Where.X = int(e.EventX)
mme.Where.Y = int(e.EventY)
if lastX != noX {
mme.From.X = int(lastX)
mme.From.Y = int(lastY)
} else {
mme.From.X = mme.Where.X
mme.From.Y = mme.Where.Y
}
lastX = int32(e.EventX)
lastY = int32(e.EventY)
if button == 0 {
w.events <- mme
} else {
var mde wde.MouseDraggedEvent
mde.MouseMovedEvent = mme
mde.Which = button
w.events <- mde
}
case xproto.KeyPressEvent:
var ke wde.KeyEvent
code := keybind.LookupString(w.xu, e.State, e.Detail)
ke.Key = keyForCode(code)
w.events <- wde.KeyDownEvent(ke)
downKeys[ke.Key] = true
kpe := wde.KeyTypedEvent{
KeyEvent: ke,
Glyph: letterForCode(code),
Chord: wde.ConstructChord(downKeys),
}
w.events <- kpe
case xproto.KeyReleaseEvent:
var ke wde.KeyUpEvent
ke.Key = keyForCode(keybind.LookupString(w.xu, e.State, e.Detail))
delete(downKeys, ke.Key)
w.events <- ke
case xproto.ConfigureNotifyEvent:
var re wde.ResizeEvent
re.Width = int(e.Width)
re.Height = int(e.Height)
if re.Width != w.width || re.Height != w.height {
w.width, w.height = re.Width, re.Height
w.bufferLck.Lock()
w.buffer.Destroy()
w.buffer = xgraphics.New(w.xu, image.Rect(0, 0, re.Width, re.Height))
w.bufferLck.Unlock()
w.events <- re
}
case xproto.ClientMessageEvent:
if icccm.IsDeleteProtocol(w.xu, xevent.ClientMessageEvent{&e}) {
w.events <- wde.CloseEvent{}
}
case xproto.DestroyNotifyEvent:
case xproto.ReparentNotifyEvent:
case xproto.MapNotifyEvent:
case xproto.UnmapNotifyEvent:
case xproto.PropertyNotifyEvent:
default:
fmt.Printf("unhandled event: type %T\n%+v\n", e, e)
}
}
close(w.events)
}
func main() {
X, err := xgbutil.NewConn()
if err != nil {
log.Println(err)
return
}
//Initialize the keybind package
keybind.Initialize(X)
//Create a window
win, err := xwindow.Generate(X)
if err != nil {
log.Fatalf("Could not generate a new window X id: %s", err)
}
win.Create(X.RootWin(), 0, 0, 1024, 768, xproto.CwBackPixel, 0x606060ff)
// Listen for Key{Press,Release} events.
win.Listen(xproto.EventMaskKeyPress, xproto.EventMaskKeyRelease)
// Map the window. This is what makes it on the screen
win.Map()
//Make a ...callback... for the events and connect
xevent.KeyPressFun(
func(X *xgbutil.XUtil, e xevent.KeyPressEvent) {
modStr := keybind.ModifierString(e.State)
keyStr := keybind.LookupString(X, e.State, e.Detail)
if len(modStr) > 0 {
log.Printf("Key: %s-%s\n", modStr, keyStr)
} else {
log.Println("Key:", keyStr)
}
if keybind.KeyMatch(X, "Escape", e.State, e.Detail) {
if e.State&xproto.ModMaskControl > 0 {
log.Println("Control-Escape detected. Quitting...")
xevent.Quit(X)
}
}
}).Connect(X, win.Id)
//So here i'm going to try to make a image..'
img := xgraphics.New(X, image.Rect(0, 0, 1024, 768))
err = img.XSurfaceSet(win.Id)
if err != nil {
log.Printf("Error while setting window surface to image %d: %s\n",
win, err)
} else {
log.Printf("Window %d surface set to image OK\n", win)
}
// I /think/ XDraw actually sends data to server?
img.XDraw()
// I /think/ XPaint tells the server to paint image to window
img.XPaint(win.Id)
//Start the routine that updates the window
go updater(img, win)
//This seems to start a main loop for listening to xevents
xevent.Main(X)
}
func main() {
// Signal Handling.
sigChan := make(chan os.Signal)
signal.Notify(sigChan, syscall.SIGTERM, syscall.SIGINT)
paths := basedir.Paths{
XDGSuffix: "gobar",
GoImportPath: "github.com/AmandaCameron/gobar/data",
}
file, err := paths.ConfigFile("config.wini")
utils.FailMeMaybe(err)
cfg := loadConfig(file) //os.Getenv("HOME") + "/.config/gobar/config.wini")
// Load Images.
images.Init(paths)
// Setup the X Connection
X, err := xgbutil.NewConn()
utils.FailMeMaybe(err)
win, err := xwindow.Create(X, X.RootWin())
utils.FailMeMaybe(err)
win.Resize(cfg.BarWidth, cfg.BarSize)
// Setup the EWMH Stuff
utils.FailMeMaybe(ewmh.RestackWindow(X, win.Id))
var strut *ewmh.WmStrutPartial
if cfg.Position == "Top" {
strut = &ewmh.WmStrutPartial{
Top: uint(cfg.BarSize),
TopStartX: 0,
TopEndX: uint(cfg.BarWidth),
}
win.Move(0, 0)
} else if cfg.Position == "Bottom" {
strut = &ewmh.WmStrutPartial{
Bottom: uint(cfg.BarSize),
BottomStartX: 0,
BottomEndX: uint(cfg.BarWidth),
}
win.Move(0, 600-cfg.BarSize)
} else {
println("Invalid Position:", cfg.Position)
os.Exit(1)
}
utils.FailMeMaybe(ewmh.WmStrutPartialSet(X, win.Id, strut))
utils.FailMeMaybe(ewmh.WmWindowTypeSet(X, win.Id, []string{
"_NET_WM_WINDOW_TYPE_DOCK",
}))
// Put us everywhere.
utils.FailMeMaybe(ewmh.WmDesktopSet(X, win.Id, 0xFFFFFFFF))
win.Map()
keybind.Initialize(X)
// Get the DE settings, if we can.
xs, err := xsettings.New(X)
if err != nil {
// Maybe this should be an error, maybe not?
xs = nil
}
// Draw the background
bg := xgraphics.BGRA{
R: 64,
G: 64,
B: 64,
A: 255,
}
img := xgraphics.New(X, image.Rect(0, 0, cfg.BarWidth, cfg.BarSize))
img.For(func(x, y int) xgraphics.BGRA {
return bg
})
utils.FailMeMaybe(img.XSurfaceSet(win.Id))
img.XDraw()
img.XPaint(win.Id)
// Connect to DBus
sys, err := dbus.Connect(dbus.SystemBus)
utils.FailMeMaybe(err)
// The session bus, too.
sess, err := dbus.Connect(dbus.SessionBus)
utils.FailMeMaybe(err)
// Blah
x := xdg.New()
// TODO: How should this fail? I imagine defaulting to gnome is the wrong thing to do,
// but I'm not really sure what it should do.
if xs != nil {
theme, err := xs.GetString("Net/IconThemeName")
if err == nil {
x.SetTheme(theme)
}
}
var dev *nm.Device
var batt *upower.Device
up := upower.New(sys)
cli := nm.New(sys)
if devs, err := cli.GetDevices(); err == nil {
for _, d := range devs {
if d.Type() == nm.Wireless {
dev = d
break
}
}
}
if pdevs, err := up.GetDevices(); err == nil {
for _, d := range pdevs {
if d.Type() == upower.Battery {
batt = d
break
}
}
}
// Clock
clck := &Clock{
X: X,
Position: cfg.Clock.Position,
Width: cfg.Clock.Width,
Height: cfg.BarSize,
Parent: win,
Format: cfg.ClockFormat,
Background: xgraphics.BGRA{R: 48, G: 48, B: 48, A: 255},
Foreground: xgraphics.BGRA{R: 255, G: 255, B: 255, A: 255},
Font: utils.OpenFont(cfg.Clock.Font.Name),
FontSize: cfg.Clock.Font.Size,
}
clck.Init()
// App Launch Tracker
tracker := &Tracker{
X: X,
Position: cfg.Tracker.Position,
Size: cfg.BarSize,
Background: bg,
Parent: win,
}
tracker.Init()
// Command Tray
ct := &commandtray.CommandTray{
X: X,
Width: cfg.Command.Width,
Height: cfg.BarSize,
Position: cfg.Command.Position,
Parent: win,
Font: utils.OpenFont(cfg.Command.Font.Name),
FontSize: cfg.Command.Font.Size,
}
commandtray.Register(commandtray.AppSource{
Xdg: x,
X: X,
AppTracker: tracker,
})
if sess != nil {
commandtray.Register(commandtray.GnomeSessionSource{
Obj: sess.Object("org.gnome.SessionManager", "/org/gnome/SessionManager"),
Xdg: x,
})
commandtray.Register(commandtray.NewShellSource(sess, x))
commandtray.Register(&commandtray.AppMenuSource{
Conn: sess,
})
}
// Done, maybe?
ct.Init()
ct.Bind(cfg.CommandAccel)
ct.Draw()
// Status Bar
sb := &statbar.StatusBar{
X: X,
Width: cfg.StatusBar.Width,
Position: cfg.StatusBar.Position,
Height: cfg.BarSize,
Parent: win,
}
sb.Init()
if batt != nil {
sb.Add(&statbar.SbPower{batt})
}
if dev != nil {
sb.Add(&statbar.SbNmWifi{dev})
commandtray.Register(commandtray.NmSource{dev})
}
sb.Draw()
// My My this anikin guy...
go func() {
for {
select {
case <-sigChan:
sb.Teardown()
time.Sleep(1 * time.Second)
// Anybody else?
xevent.Quit(X)
}
}
}()
xevent.Main(X)
}
func main() {
X, err := xgbutil.NewConn()
fatal(err)
// Whenever the mousebind package is used, you must call Initialize.
// Similarly for the keybind package.
keybind.Initialize(X)
mousebind.Initialize(X)
// Easter egg! Use a right click to draw a gopher.
gopherPng, _, err := image.Decode(bytes.NewBuffer(gopher.GopherPng()))
fatal(err)
// Now scale it to a reasonable size.
gopher := xgraphics.Scale(gopherPng, gopherWidth, gopherHeight)
// Create a new xgraphics.Image. It automatically creates an X pixmap for
// you, and handles drawing to windows in the XDraw, XPaint and
// XSurfaceSet functions.
// N.B. An error is possible since X pixmap allocation can fail.
canvas := xgraphics.New(X, image.Rect(0, 0, width, height))
// Color in the background color.
canvas.For(func(x, y int) xgraphics.BGRA {
return bg
})
// Use the convenience function XShowExtra to create and map the
// canvas window.
// XShowExtra will also set the surface window of canvas for us.
// We also use XShowExtra to set the name of the window and to quit the
// main event loop when the window is closed.
win := canvas.XShowExtra("Pointer painting", true)
// Listen for pointer motion events and key press events.
win.Listen(xproto.EventMaskButtonPress | xproto.EventMaskButtonRelease |
xproto.EventMaskKeyPress)
// The mousebind drag function runs three callbacks: one when the drag is
// first started, another at each "step" in the drag, and a final one when
// the drag is done.
// The button sequence (in this case '1') is pressed, the first callback
// is executed. If the first return value is true, the drag continues
// and a pointer grab is initiated with the cursor id specified in the
// second return value (use 0 to keep the cursor unchanged).
// If it's false, the drag stops.
// Note that Drag will automatically compress MotionNotify events.
mousebind.Drag(X, win.Id, win.Id, "1", false,
func(X *xgbutil.XUtil, rx, ry, ex, ey int) (bool, xproto.Cursor) {
drawPencil(canvas, win, ex, ey)
return true, 0
},
func(X *xgbutil.XUtil, rx, ry, ex, ey int) {
drawPencil(canvas, win, ex, ey)
},
func(X *xgbutil.XUtil, rx, ry, ex, ey int) {})
mousebind.Drag(X, win.Id, win.Id, "3", false,
func(X *xgbutil.XUtil, rx, ry, ex, ey int) (bool, xproto.Cursor) {
drawGopher(canvas, gopher, win, ex, ey)
return true, 0
},
func(X *xgbutil.XUtil, rx, ry, ex, ey int) {
drawGopher(canvas, gopher, win, ex, ey)
},
func(X *xgbutil.XUtil, rx, ry, ex, ey int) {})
// Bind to the clear key specified, and just redraw the bg color.
keybind.KeyPressFun(
func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
clearCanvas(canvas, win)
}).Connect(X, win.Id, clearKey, false)
// Bind a callback to each key specified in the 'pencils' color map.
// The response is to simply switch the pencil color.
for key, clr := range pencils {
c := clr
keybind.KeyPressFun(
func(X *xgbutil.XUtil, ev xevent.KeyPressEvent) {
log.Printf("Changing pencil color to: %#v", c)
pencil = c
}).Connect(X, win.Id, key, false)
}
// Output some basic directions.
fmt.Println("Use the left or right buttons on your mouse to paint " +
"squares and gophers.")
fmt.Println("Pressing numbers 1, 2, 3, 4, 5 or 6 will switch your pencil " +
"color.")
fmt.Println("Pressing 'c' will clear the canvas.")
xevent.Main(X)
}