Exemple #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()
}
Exemple #2
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()
}
Exemple #3
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()
}
Exemple #4
0
func Example() {
	runtime.LockOSThread()
	gtk.Init(nil)

	webView := webkit2.NewWebView()
	defer webView.Destroy()

	webView.Connect("load-failed", func() {
		fmt.Println("Load failed.")
	})
	webView.Connect("load-changed", func(_ *glib.Object, i int) {
		loadEvent := webkit2.LoadEvent(i)
		switch loadEvent {
		case webkit2.LoadFinished:
			fmt.Println("Load finished.")
			fmt.Printf("Title: %q\n", webView.Title())
			fmt.Printf("URI: %s\n", webView.URI())
			webView.RunJavaScript("window.location.hostname", func(val *gojs.Value, err error) {
				if err != nil {
					fmt.Println("JavaScript error.")
				} else {
					fmt.Printf("Hostname (from JavaScript): %q\n", val)
				}
				gtk.MainQuit()
			})
		}
	})

	glib.IdleAdd(func() bool {
		webView.LoadURI("https://www.google.com/")
		return false
	})

	gtk.Main()

	// output:
	// Load finished.
	// Title: "Google"
	// URI: https://www.google.com/
	// Hostname (from JavaScript): "www.google.com"
}
Exemple #5
0
func main() {
	gtk.Init(nil)

	win := setupWindow()
	box, _ := gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 0)
	win.Add(box)

	tv := setupTextView(box)

	props := []*BoolProperty{
		&BoolProperty{"cursor visible", (*tv).GetCursorVisible, (*tv).SetCursorVisible},
		&BoolProperty{"editable", (*tv).GetEditable, (*tv).SetEditable},
		&BoolProperty{"overwrite", (*tv).GetOverwrite, (*tv).SetOverwrite},
		&BoolProperty{"accepts tab", (*tv).GetAcceptsTab, (*tv).SetAcceptsTab},
	}

	setupPropertyCheckboxes(tv, box, props)

	win.ShowAll()

	gtk.Main()
}
Exemple #6
0
func main() {
	gtk.Init(nil)

	win := setup_window("Simple Example")
	box := setup_box(gtk.ORIENTATION_VERTICAL)
	win.Add(box)

	tv := setup_tview()
	set_text_in_tview(tv, "Hello there!")
	box.PackStart(tv, true, true, 0)

	btn := setup_btn("Submit", func() {
		text := get_text_from_tview(tv)
		fmt.Println(text)
	})
	box.Add(btn)

	// 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()
}
Exemple #7
0
func init() {
	gtk.Init(nil)
}
Exemple #8
0
func init() {
	runtime.LockOSThread()
	gtk.Init(nil)
}
Exemple #9
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()
}
Exemple #10
0
func main() {
	flag.Usage = func() {
		fmt.Fprintln(os.Stderr)
		fmt.Fprintf(os.Stderr, "webkit-eval-js evaluates a JavaScript expression in the context of a web page\n")
		fmt.Fprintf(os.Stderr, "running in a headless instance of the WebKit browser.\n\n")
		fmt.Fprintf(os.Stderr, "Usage:\n\n")
		fmt.Fprintf(os.Stderr, "\twebkit-eval-js url script-file\n\n")
		fmt.Fprintf(os.Stderr, "url is the web page to execute the script in, and script-file is a local file\n")
		fmt.Fprintf(os.Stderr, "with the JavaScript you want to evaluate. The result is printed to stdout as JSON.\n\n")
		fmt.Fprintln(os.Stderr)
		fmt.Fprintf(os.Stderr, "Example usage:\n\n")
		fmt.Fprintf(os.Stderr, "\tTo return the value of `document.title` on https://google.com:\n")
		fmt.Fprintf(os.Stderr, "\t    $ echo document.title | webkit-eval-js https://google.com /dev/stdin\n")
		fmt.Fprintf(os.Stderr, "\tPrints:\n")
		fmt.Fprintf(os.Stderr, "\t    \"Google\"\n\n")
		fmt.Fprintf(os.Stderr, "Notes:\n\n")
		fmt.Fprintf(os.Stderr, "\tBecause a headless WebKit instance is used, your $DISPLAY must be set. Use\n")
		fmt.Fprintf(os.Stderr, "\tXvfb if you are running on a machine without an existing X server. See\n")
		fmt.Fprintf(os.Stderr, "\thttps://sourcegraph.com/github.com/sourcegraph/go-webkit2/readme for more info.\n")
		fmt.Fprintln(os.Stderr)
		os.Exit(1)
	}
	flag.Parse()

	if flag.NArg() != 2 {
		flag.Usage()
		os.Exit(1)
	}

	log := log.New(os.Stderr, "", 0)

	pageURL := flag.Arg(0)
	scriptFile := flag.Arg(1)

	if _, err := url.Parse(pageURL); err != nil {
		log.Fatalf("Failed to parse URL %q: %s", pageURL, err)
	}

	script, err := ioutil.ReadFile(scriptFile)
	if err != nil {
		log.Fatalf("Failed to open script file %q: %s", scriptFile, err)
	}

	runtime.LockOSThread()
	gtk.Init(nil)

	webView := webkit2.NewWebView()
	defer webView.Destroy()

	webView.Connect("load-failed", func() {
		fmt.Println("Load failed.")
	})
	webView.Connect("load-changed", func(_ *glib.Object, event int) {
		loadEvent := webkit2.LoadEvent(event)
		switch loadEvent {
		case webkit2.LoadFinished:
			webView.RunJavaScript(string(script), func(val *gojs.Value, err error) {
				if err != nil {
					log.Fatalf("JavaScript error: %s", err)
				} else {
					json, err := val.JSON()
					if err != nil {
						log.Fatal("JavaScript serialization error: %s", err)
					}
					fmt.Println(string(json))
				}
				gtk.MainQuit()
			})
		}
	})

	glib.IdleAdd(func() bool {
		webView.LoadURI(pageURL)
		return false
	})

	gtk.Main()
}