func Ellipse(x, y, a, b int, n, f bool) {
//
x0, y0 := C.int(x-a), C.int(y-b)
if f {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
} // C.GXcopyInverted ?
if !xxb {
C.XFillArc(display, C.Drawable(window), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
C.XFillArc(display, C.Drawable(pixmap), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
} else {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawArc(display, C.Drawable(window), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
C.XDrawArc(display, C.Drawable(pixmap), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Clr(x, y, w, h uint) {
//
C.XSetForeground(display, graphicsContext, cc(col.ScreenB))
C.XFillRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
C.XSetForeground(display, graphicsContext, cc(col.ScreenF))
C.XFlush(display)
}
func CreateXWindow(width, height int) (*XWindow, error) {
C.XInitThreads()
W := &XWindow{}
W.Display = C.XOpenDisplay(nil)
if W.Display == nil {
return &XWindow{}, errors.New("Can't open display")
}
W.Window = C.XCreateSimpleWindow(W.Display, C.XDefaultRootWindow(W.Display), 0, 0, C.uint(width), C.uint(height), 0, 0, 0xFF151515)
C.XSetWindowBackgroundPixmap(W.Display, W.Window, 0) // This avoids flickering on resize
C.XMapWindow(W.Display, W.Window)
C.XStoreName(W.Display, W.Window, C.CString("gowitt"))
C.XSelectInput(W.Display, W.Window, C.ExposureMask|C.KeyPressMask|C.ButtonPressMask)
C.XFlush(W.Display)
// Cairo
W.Surface = C.cairo_xlib_surface_create(W.Display, C.Drawable(W.Window), C.XDefaultVisual(W.Display, 0), C.int(width), C.int(height))
C.cairo_xlib_surface_set_size(W.Surface, C.int(width), C.int(height))
W.Cairo = C.cairo_create(W.Surface)
// Pango
InitLayoutsCache(W.Cairo)
W.PangoContext = C.pango_cairo_create_context(W.Cairo)
W.FontDesc = C.pango_font_description_from_string(C.CString("Sans 10"))
W.AttrList = C.pango_attr_list_new()
placeholderImage = C.cairo_image_surface_create_from_png(C.CString("test.png"))
W.UserImages = NewImageCache(func() {
var ev C.XEvent
exev := (*C.XExposeEvent)(unsafe.Pointer(&ev))
exev._type = C.Expose
exev.count = 0
exev.window = W.Window
exev.send_event = 1
exev.display = W.Display
C.XSendEvent(W.Display, W.Window, 0, C.ExposureMask, &ev)
C.XFlush(W.Display)
})
return W, nil
}
func Colours(F, B col.Colour) {
//
if !initialized {
return
}
// C.XSetForeground (display, graphicsContext, C.ulong(col.CodeF))
// C.XSetBackground (display, graphicsContext, C.ulong(col.CodeB))
C.XSetForeground(display, graphicsContext, cc(col.ActualF))
C.XSetBackground(display, graphicsContext, cc(col.ActualB))
C.XFlush(display)
}
func Invert(x, y, x1, y1 uint) {
//
if x > x1 || y > y1 {
} // desaster
C.XSetFunction(display, graphicsContext, C.GXinvert)
if !xxb {
C.XFillRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(x1-x+1), C.uint(y1-y+1))
}
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(x1-x+1), C.uint(y1-y+1))
C.XSetFunction(display, graphicsContext, C.GXcopy)
C.XFlush(display)
}
func Line(x, y, x1, y1 int, n bool) {
//
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawLine(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.int(x1), C.int(y1))
}
C.XDrawLine(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.int(x1), C.int(y1))
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Point(x, y int, n bool) {
//
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawPoint(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y))
}
C.XDrawPoint(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y))
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func sendKey(disp *C.struct__XDisplay, strname string) {
if disp == nil {
fmt.Println("no X11 display available")
return
}
var mod _Ctype_KeyCode
if strings.HasPrefix(strname, "Ctrl+") {
strname = strname[len("Ctrl+"):]
modkey := "Control_L"
mod = C.XKeysymToKeycode(disp, C.XStringToKeysym(C.CString(modkey)))
if debug {
fmt.Printf("send key %T (Control) code=%v\n", mod, mod)
}
C.XTestFakeKeyEvent(disp, C.uint(mod), 1, 0)
C.XFlush(disp)
}
chstr := C.CString(strname)
keysym := C.XStringToKeysym(chstr)
keycode := C.XKeysymToKeycode(disp, keysym)
if debug {
fmt.Printf("send key (%s) sym=%v code=%v\n", strname, keysym, keycode)
}
C.XTestFakeKeyEvent(disp, C.uint(keycode), 1, 0)
C.XFlush(disp)
C.XTestFakeKeyEvent(disp, C.uint(keycode), 0, 0)
C.XFlush(disp)
if debug {
fmt.Printf("hit key %v (keysym %v keycode %v)\n", strname, keysym, keycode)
}
fmt.Printf("mod is == %v\n", mod)
if mod != 0 {
C.XTestFakeKeyEvent(disp, C.uint(mod), 0, 0)
C.XFlush(disp)
}
}
func Buf(on bool) {
//
if xxb == on {
return
}
xxb = on
if on {
C.XSetForeground(display, graphicsContext, cc(col.ScreenB))
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, 0, 0, C.uint(xx), C.uint(yy))
C.XSetForeground(display, graphicsContext, cc(col.ScreenF))
C.XFlush(display)
} else {
pp2ff()
}
}
func Write(s string, x, y int, t bool) {
//
n := C.uint(len(s))
if !t {
C.XSetForeground(display, graphicsContext, C.ulong(col.CodeB))
if !xxb {
C.XFillRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), n*C.uint(ZB), C.uint(ZH))
}
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), n*C.uint(ZB), C.uint(ZH))
C.XSetForeground(display, graphicsContext, C.ulong(col.CodeF))
}
cs := C.CString(s)
if !xxb {
C.XDrawString(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y)+ZA, cs, C.int(n))
}
C.XDrawString(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y)+ZA, cs, C.int(n))
C.free(unsafe.Pointer(cs))
C.XFlush(display)
}
// Loop runs the main X loop.
func (dpy *Display) Loop(uwin ui.Win) {
win := uwin.(*Window)
awaitEvent := make(chan bool)
go func() {
xfd := int(C.XConnectionNumber(dpy.dpy))
for {
<-awaitEvent
err := waitUntilReadable(xfd)
if err != nil {
log.Fatalf("select %#v", err)
}
dpy.eventReady <- true
}
}()
C.XFlush(dpy.dpy)
awaitEvent <- true
draw := false
for {
nextFrame := dpy.anims.NextFrame(draw)
select {
case <-dpy.eventReady:
dpy.processXEvents(win)
awaitEvent <- true
case <-dpy.drawReady:
draw = true
case t := <-nextFrame:
dpy.anims.Run()
// log.Printf("draw %s", t)
t = t
cr := cairo.Create(win.bufSurface.Surface)
win.delegate.Draw(cr)
win.repaint(0, 0, win.width, win.height)
C.XSync(dpy.dpy, 0)
draw = false
case f := <-dpy.funcs:
f()
case <-dpy.quit:
return
}
}
}
func Decode(x, y, w, h uint, b []byte) {
//
const M = C.ulong(1<<32 - 1)
////////////////////////////////////////////////////////////////////////////////////////////// steals a lot of time
ximg := C.XGetImage(display, C.Drawable(window), C.int(x), C.int(y), C.uint(w), C.uint(h), M, C.XYPixmap)
////////////////////////////////////////////////////////////////////////////////////////////// steals a lot of time
n := uint(0)
// var pixel C.ulong
for j := uint(0); j < h; j++ {
for i := uint(0); i < w; i++ {
pixel := (C.ulong)(obj.Decode(n, b[n:n+4]).(uint))
C.xPutPixel(ximg, C.int(i), C.int(j), pixel) // C.XPutPixel (ximg, C.int(i), C.int(j), pixel)
n += 4
}
}
C.XPutImage(display, C.Drawable(window), graphicsContext, ximg, 0, 0, C.int(x), C.int(y), C.uint(w), C.uint(h))
C.XCopyArea(display, C.Drawable(window), C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h), C.int(x), C.int(y))
C.XFlush(display)
C.xDestroyImage(ximg) // C.XDestroyImage (ximg)
}
func PolygonFull(X, Y []int, n bool) {
//
l := len(X)
if len(Y) != l {
return
}
p := make([]C.XPoint, l)
for i := 0; i < l; i++ {
p[i].x, p[i].y = C.short(X[i]), C.short(Y[i])
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopyInverted)
}
if !xxb {
C.XFillPolygon(display, C.Drawable(window), graphicsContext, &p[0], C.int(l), C.Convex, C.CoordModeOrigin)
}
C.XFillPolygon(display, C.Drawable(pixmap), graphicsContext, &p[0], C.int(l), C.Convex, C.CoordModeOrigin)
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Segments(X, Y, X1, Y1 []int, n bool) {
//
l := len(X)
if len(Y) != l {
return
}
s := make([]C.XSegment, l)
for i := 0; i < l; i++ {
s[i].x1, s[i].y1, s[i].x2, s[i].y2 = C.short(X[i]), C.short(Y[i]), C.short(X1[i]), C.short(Y1[i])
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawSegments(display, C.Drawable(window), graphicsContext, &s[0], C.int(l))
}
C.XDrawSegments(display, C.Drawable(pixmap), graphicsContext, &s[0], C.int(l))
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
func Switch(x, y uint) {
//
if xx == maxX && yy == maxY {
C.sw(display, window, window0, netwm_state, fullscreen, C.int(0))
}
xx, yy = C.uint(x), C.uint(y)
if xx == maxX && yy == maxY {
C.sw(display, window, window0, netwm_state, fullscreen, C.int(1))
} else {
C.XResizeWindow(display, window, xx, yy) // resizerequest.width, resizerequest.height
C.XFlush(display)
}
C.XFreePixmap(display, pixmap)
pixmap = C.XCreatePixmap(display, C.Drawable(window), xx, yy, bitdepth)
C.XFreePixmap(display, pixmap1)
pixmap1 = C.XCreatePixmap(display, C.Drawable(window), xx, yy, bitdepth)
C.XSetForeground(display, graphicsContext, cc(col.ActualB))
//
C.XFillRectangle(display, C.Drawable(window), graphicsContext, 0, 0, xx, yy)
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, 0, 0, xx, yy)
C.XFillRectangle(display, C.Drawable(pixmap1), graphicsContext, 0, 0, xx, yy)
MouseDef(0, 0, int(xx-1), int(yy-1))
// var E *C.XEvent
// C.XNextEvent (display, E)
// et:= C.typ (&E) // et == *E.type
// switch et { case C.Expose, C.ConfigureNotify:
// for C.XCheckTypedEvent (display, C.int(et), E) == C.True { }
// case C.ReparentNotify:
// ;
// default:
// C.XPutBackEvent (display, E)
// }
WarpMouse(int(xx)/2, int(yy)/2)
// C.XSync (display, C.False)
// if navi.initialized (naviFd) {
// go catchNavi ()
// }
}
func Rectangle(x, y, w, h int, n, f bool) {
//
if f {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
} // C.GXcopyInverted ?
if !xxb {
C.XFillRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
}
C.XFillRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
} else {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawRectangle(display, C.Drawable(window), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
}
C.XDrawRectangle(display, C.Drawable(pixmap), graphicsContext, C.int(x), C.int(y), C.uint(w), C.uint(h))
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
// processXEvents does one read from the X fd, then processes all pending
// events.
func (dpy *Display) processXEvents(win *Window) {
var event C.XEvent
events := C.XEventsQueued(dpy.dpy, C.QueuedAfterReading)
for i := 0; i < int(events); i++ {
C.XNextEvent(dpy.dpy, &event)
e := &event
typ := xEventType(*(*C.int)(unsafe.Pointer(e)))
// log.Printf("typ %s", typ.String())
switch typ {
case C.ConfigureNotify:
e := (*C.XConfigureEvent)(unsafe.Pointer(e))
win.resize(int(e.width), int(e.height))
case C.Expose:
e := (*C.XExposeEvent)(unsafe.Pointer(e))
win.repaint(int(e.x), int(e.y), int(e.width), int(e.height))
case C.KeyPress:
e := (*C.XKeyEvent)(unsafe.Pointer(e))
key := keys.Key{}
if e.state&C.ControlMask != 0 {
key.Mods |= keys.ModControl
}
if e.state&C.Mod1Mask != 0 {
key.Mods |= keys.ModMeta
}
var buf [8]byte
var keysym C.KeySym
C.XLookupString(e, (*C.char)(unsafe.Pointer(&buf)), 8, &keysym, nil)
nulpos := bytes.Index(buf[:], []byte{0})
if nulpos > 0 {
if nulpos > 1 {
log.Printf("xlib: overlong key %q", buf[:nulpos])
}
key.Sym = keys.Sym(buf[0])
if key.Mods&keys.ModControl != 0 {
// Undo Ctl-A => "ASCII control character" mapping.
key.Sym += 'a' - 1
}
} else {
// See /usr/include/X11/keysymdef.h
switch keysym {
case C.XK_Left:
key.Sym = keys.Left
case C.XK_Right:
key.Sym = keys.Right
case C.XK_Up:
key.Sym = keys.Up
case C.XK_Down:
key.Sym = keys.Down
case C.XK_Shift_L, C.XK_Shift_R:
case C.XK_Control_L, C.XK_Control_R:
case C.XK_Meta_L, C.XK_Meta_R:
case C.XK_Alt_L, C.XK_Alt_R:
case C.XK_Super_L, C.XK_Super_R:
case C.XK_Hyper_L, C.XK_Hyper_R:
case C.XK_Caps_Lock:
// ignore for now
default:
log.Printf("xlib: unhandled keysym %#v: %#v", keysym, e)
}
}
win.delegate.Key(key)
case C.KeyRelease:
// ignore
case C.ButtonPress:
e := (*C.XButtonEvent)(unsafe.Pointer(e))
switch e.button {
case 4, 5:
dy := -1
if e.button == 5 {
dy = 1
}
win.delegate.Scroll(dy)
case 6, 7:
// TODO horizontal scroll.
default:
log.Printf("unhandled button %#v", e)
}
case C.MapNotify:
win.delegate.Mapped()
case C.ReparentNotify:
// ignore
default:
if typ > C.GenericEvent {
// Cairo triggers shm events, which show up as extension
// events with greater ids than C.GenericEvent.
continue
}
log.Printf("unhandled ev %s", typ.String())
}
}
C.XFlush(dpy.dpy)
}
func WarpMouse(x, y int) {
//
C.XWarpPointer(display, C.None, window, 0, 0, 0, 0, C.int(x), C.int(y))
C.XFlush(display)
}
func pp2ff() {
//
C.XCopyArea(display, C.Drawable(pixmap), C.Drawable(window), graphicsContext, 0, 0, xx, yy, 0, 0)
C.XFlush(display)
}