Example #1
0
func main() {
	// Initialize GTK without parsing any command line arguments.
	gtk.Init(nil)

	// Create a new toplevel window, set its title, and connect it to the
	// "destroy" signal to exit the GTK main loop when it is destroyed.
	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
	if err != nil {
		log.Fatal("Unable to create window:", err)
	}
	win.SetTitle("Simple Example")
	win.Connect("destroy", func() {
		gtk.MainQuit()
	})

	// Create a new label widget to show in the window.
	l, err := gtk.LabelNew("Hello, gotk3!")
	if err != nil {
		log.Fatal("Unable to create label:", err)
	}

	// Add the label to the window.
	win.Add(l)

	// Set the default window size.
	win.SetDefaultSize(800, 600)

	// Recursively show all widgets contained in this window.
	win.ShowAll()

	// Begin executing the GTK main loop.  This blocks until
	// gtk.MainQuit() is run.
	gtk.Main()
}
Example #2
0
/*At this moment Visionect specific*/
func TestTimeoutAdd(t *testing.T) {
	runtime.LockOSThread()

	glib.TimeoutAdd(2500, func(s string) bool {
		t.Log(s)
		gtk.MainQuit()
		return false
	}, "TimeoutAdd executed")

	gtk.Main()
}
Example #3
0
func setup_window(title string) *gtk.Window {
	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
	if err != nil {
		log.Fatal("Unable to create window:", err)
	}
	win.SetTitle(title)
	win.Connect("destroy", func() {
		gtk.MainQuit()
	})
	win.SetDefaultSize(800, 600)
	win.SetPosition(gtk.WIN_POS_CENTER)
	return win
}
Example #4
0
func main() {
	gtk.Init(nil)

	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
	if err != nil {
		log.Fatal("Unable to create window:", err)
	}
	win.Connect("destroy", func() {
		gtk.MainQuit()
	})

	win.Add(windowWidget())

	// Native GTK is not thread safe, and thus, gotk3's GTK bindings may not
	// be used from other goroutines.  Instead, glib.IdleAdd() must be used
	// to add a function to run in the GTK main loop when it is in an idle
	// state.
	//
	// Two examples of using glib.IdleAdd() are shown below.  The first runs
	// a user created function, LabelSetTextIdle, and passes it two
	// arguments for a label and the text to set it with.  The second calls
	// (*gtk.Label).SetText directly, passing in only the text as an
	// argument.
	//
	// If the function passed to glib.IdleAdd() returns one argument, and
	// that argument is a bool, this return value will be used in the same
	// manner as a native g_idle_add() call.  If this return value is false,
	// the function will be removed from executing in the GTK main loop's
	// idle state.  If the return value is true, the function will continue
	// to execute when the GTK main loop is in this state.
	go func() {
		for {
			time.Sleep(time.Second)
			s := fmt.Sprintf("Set a label %d time(s)!", nSets)
			_, err := glib.IdleAdd(LabelSetTextIdle, topLabel, s)
			if err != nil {
				log.Fatal("IdleAdd() failed:", err)
			}
			nSets++
			s = fmt.Sprintf("Set a label %d time(s)!", nSets)
			_, err = glib.IdleAdd(bottomLabel.SetText, s)
			if err != nil {
				log.Fatal("IdleAdd() failed:", err)
			}
			nSets++
		}
	}()

	win.ShowAll()
	gtk.Main()
}
Example #5
0
func main() {
	gtk.Init(nil)

	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
	if err != nil {
		log.Fatal("Unable to create window:", err)
	}
	win.Connect("destroy", func() {
		gtk.MainQuit()
	})

	win.Add(windowWidget())
	win.ShowAll()

	gtk.Main()
}
Example #6
0
// TestConnectNotifySignal ensures that property notification signals (those
// whose name begins with "notify::") are queried by the name "notify" (with the
// "::" and the property name omitted). This is because the signal is "notify"
// and the characters after the "::" are not recognized by the signal system.
//
// See
// https://developer.gnome.org/gobject/stable/gobject-The-Base-Object-Type.html#GObject-notify
// for background, and
// https://developer.gnome.org/gobject/stable/gobject-Signals.html#g-signal-new
// for the specification of valid signal names.
func TestConnectNotifySignal(t *testing.T) {
	runtime.LockOSThread()

	// Create any GObject that has defined properties.
	spacing := 0
	box, _ := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, spacing)

	// Connect to a "notify::" signal to listen on property changes.
	box.Connect("notify::spacing", func() {
		gtk.MainQuit()
	})

	glib.IdleAdd(func(s string) bool {
		t.Log(s)
		spacing++
		box.SetSpacing(spacing)
		return true
	}, "IdleAdd executed")

	gtk.Main()
}
Example #7
0
func main() {
	gtk.Init(nil)

	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
	if err != nil {
		log.Fatal("Unable to create window:", err)
	}
	win.SetTitle("Grid Example")
	win.Connect("destroy", func() {
		gtk.MainQuit()
	})

	// Create a new grid widget to arrange child widgets
	grid, err := gtk.GridNew()
	if err != nil {
		log.Fatal("Unable to create grid:", err)
	}

	// gtk.Grid embeds an Orientable struct to simulate the GtkOrientable
	// GInterface.  Set the orientation from the default horizontal to
	// vertical.
	grid.SetOrientation(gtk.ORIENTATION_VERTICAL)

	// Create some widgets to put in the grid.
	lab, err := gtk.LabelNew("Just a label")
	if err != nil {
		log.Fatal("Unable to create label:", err)
	}

	btn, err := gtk.ButtonNewWithLabel("Button with label")
	if err != nil {
		log.Fatal("Unable to create button:", err)
	}

	entry, err := gtk.EntryNew()
	if err != nil {
		log.Fatal("Unable to create entry:", err)
	}

	spnBtn, err := gtk.SpinButtonNewWithRange(0.0, 1.0, 0.001)
	if err != nil {
		log.Fatal("Unable to create spin button:", err)
	}

	nb, err := gtk.NotebookNew()
	if err != nil {
		log.Fatal("Unable to create notebook:", err)
	}

	// Calling (*gtk.Container).Add() with a gtk.Grid will add widgets next
	// to each other, in the order they were added, to the right side of the
	// last added widget when the grid is in a horizontal orientation, and
	// at the bottom of the last added widget if the grid is in a vertial
	// orientation.  Using a grid in this manner works similar to a gtk.Box,
	// but unlike gtk.Box, a gtk.Grid will respect its child widget's expand
	// and margin properties.
	grid.Add(btn)
	grid.Add(lab)
	grid.Add(entry)
	grid.Add(spnBtn)

	// Widgets may also be added by calling (*gtk.Grid).Attach() to specify
	// where to place the widget in the grid, and optionally how many rows
	// and columns to span over.
	//
	// Additional rows and columns are automatically added to the grid as
	// necessary when new widgets are added with (*gtk.Container).Add(), or,
	// as shown in this case, using (*gtk.Grid).Attach().
	//
	// In this case, a notebook is added beside the widgets inserted above.
	// The notebook widget is inserted with a left position of 1, a top
	// position of 1 (starting at the same vertical position as the button),
	// a width of 1 column, and a height of 2 rows (spanning down to the
	// same vertical position as the entry).
	//
	// This example also demonstrates how not every area of the grid must
	// contain a widget.  In particular, the area to the right of the label
	// and the right of spin button have contain no widgets.
	grid.Attach(nb, 1, 1, 1, 2)
	nb.SetHExpand(true)
	nb.SetVExpand(true)

	// Add a child widget and tab label to the notebook so it renders.
	nbChild, err := gtk.LabelNew("Notebook content")
	if err != nil {
		log.Fatal("Unable to create button:", err)
	}
	nbTab, err := gtk.LabelNew("Tab label")
	if err != nil {
		log.Fatal("Unable to create label:", err)
	}
	nb.AppendPage(nbChild, nbTab)

	// Add the grid to the window, and show all widgets.
	win.Add(grid)
	win.ShowAll()

	gtk.Main()
}