Python version

README.md

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+# glade-test
+
+Some experimentation with GTK+ 3.0 / Glade GUIs in Go and Python, particularly
+for a mobile app UI with multiple screens.
+
+![Screenshot](screenshot.png)
+
+Some features exercised:
+
+* A single-window app with multiple screens ("About" button slides to the
+  About screen, Menu->Home button transitions back to main screen, etc.)
+* Dynamically added buttons to a Gtk.Box defined in the Glade file. The buttons
+  click into a "Detail" screen updated with the label of the button clicked.
+* Menu->Open builds a dynamic Open File dialog.
+* Menu->New shows a custom New File dialog defined in the Glade file.
+
+## Python Setup
+
+```bash
+# Install dependencies (Fedora)
+sudo dnf install gobject-introspection-devel
+
+# Python dependencies
+pip install -r requirements.txt
+
+# Run it
+python main.py
+```

main.py

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+import gi
+
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, GObject, GLib
+
+class Main:
+    def __init__(self):
+        glade_file = "ui/app.glade"
+        self.builder = Gtk.Builder()
+        self.builder.add_from_file(glade_file)
+        self.builder.connect_signals(self)
+
+        self.mw = self.builder.get_object("main_window")
+        self.stack = self.builder.get_object("mw_stack")
+        self.stack_main = self.builder.get_object("box_main")
+        self.stack_about = self.builder.get_object("box_about")
+        self.stack_detail = self.builder.get_object("box_detail")
+        self.detail_header = self.builder.get_object("box_detail_header")
+        self.dlg_new = self.builder.get_object("dlg_new_file")
+        self.listbox = self.builder.get_object("mw_list")
+        self.dyn_btn_box = self.builder.get_object("dyn_btn_box")
+
+        for row in ["First Button", "Second", "Third"]:
+            self.add_button(row)
+
+        self.mw.show_all()
+
+        Gtk.main()
+
+    def add_button(self, label):
+        btn = Gtk.Button.new_with_label(label)
+        btn.connect("clicked", lambda *args: self.goto_detail_screen(label))
+        self.dyn_btn_box.pack_start(btn, expand=False, fill=True, padding=0)
+
+    def goto_detail_screen(self, label):
+        self.detail_header.set_text("Detail: " + label)
+        self.stack.set_transition_type(Gtk.StackTransitionType.SLIDE_LEFT)
+        self.stack.set_visible_child(self.stack_detail)
+
+    ### methods below are Glade signal handlers
+
+    def on_main_window_destroy(self, *args):
+        Gtk.main_quit()
+
+    def on_menu_new_activate(self, *args):
+        print("new clicked")
+        self.dlg_new.show()
+
+    def on_menu_open_activate(self, *args):
+        print("open clicked")
+
+        print(dir(Gtk.FileChooserDialog))
+        dialog = Gtk.FileChooserDialog(
+            "Please choose a file",
+            self.mw,
+            Gtk.FileChooserAction.OPEN,
+            (
+                Gtk.STOCK_CANCEL,
+                Gtk.ResponseType.CANCEL,
+                Gtk.STOCK_OPEN,
+                Gtk.ResponseType.OK,
+            ),
+        )
+
+        filter = Gtk.FileFilter()
+        filter.set_name("JPEG images")
+        filter.add_mime_type("image/jpeg")
+        dialog.add_filter(filter)
+
+        filter_any = Gtk.FileFilter()
+        filter_any.set_name("Any files")
+        filter_any.add_pattern("*")
+        dialog.add_filter(filter_any)
+
+        resp = dialog.run()
+        if resp == Gtk.ResponseType.OK:
+            print("file chosen:", dialog.get_filename())
+        elif resp == Gtk.ResponseType.CANCEL:
+            print("canceled!")
+
+        dialog.destroy()
+
+    def on_menu_quit_activate(self, *args):
+        self.mw.destroy()
+
+    def on_btn_about_clicked(self, *args):
+        print("about clicked")
+        self.stack.set_transition_type(Gtk.StackTransitionType.SLIDE_LEFT)
+        self.stack.set_visible_child(self.stack_about)
+
+    def on_btn_about_back_clicked(self, *args):
+        print("about back")
+        self.stack.set_transition_type(Gtk.StackTransitionType.SLIDE_RIGHT)
+        self.stack.set_visible_child(self.stack_main)
+
+    def on_btn_detail_back_clicked(self, *args):
+        self.on_btn_about_back_clicked(*args)
+
+    def on_menu_save_activate(self, *args):
+        pass
+
+    def on_menu_home_activate(self, *args):
+        self.on_btn_about_back_clicked(*args)
+
+    def on_new_file_selected(self, *args):
+        pass
+
+if __name__ == "__main__":
+    Main()

requirements.txt

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+pycairo
+PyGObject