ed5b42071c
This shows how to do custom drawing in a widget, implemented in python. The example sets up the environment for running from the toplevel dir, assuming that the build dir is called 'build'.
62 lines
1.6 KiB
Python
Executable File
62 lines
1.6 KiB
Python
Executable File
#!/usr/bin/env -S GI_TYPELIB_PATH=${PWD}/build/gtk:${GI_TYPELIB_PATH} LD_PRELOAD=${PWD}/build/gtk/libgtk-4.so python3
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import gi
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gi.require_version('Gdk', '4.0')
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gi.require_version('Gtk', '4.0')
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from gi.repository import Gdk
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from gi.repository import Gtk
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from gi.repository import Graphene
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class DemoWidget(Gtk.Widget):
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__gtype_name__ = "DemoWidget"
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def __init__(self):
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super().__init__()
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def do_measure(self, orientation, for_size: int):
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# We need some space to draw
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return 100, 200, -1, -1
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def do_snapshot(self, snapshot):
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# Draw four color squares
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color = Gdk.RGBA()
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rect = Graphene.Rect.alloc()
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width = self.get_width() / 2
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height = self.get_height() / 2
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Gdk.RGBA.parse(color, "red")
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rect.init(0, 0, width, height)
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snapshot.append_color(color, rect)
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Gdk.RGBA.parse(color, "green")
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rect.init(width, 0, width, height)
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snapshot.append_color(color, rect)
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Gdk.RGBA.parse(color, "yellow")
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rect.init(0, height, width, height)
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snapshot.append_color(color, rect)
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Gdk.RGBA.parse(color, "blue")
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rect.init(width, height, width, height)
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snapshot.append_color(color, rect)
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def on_activate(app):
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# Create a new window
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win = Gtk.ApplicationWindow(application=app)
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win.set_title("Squares")
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icon = DemoWidget()
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win.set_child(icon)
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win.present()
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# Create a new application
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app = Gtk.Application(application_id='org.gtk.exampleapp')
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app.connect('activate', on_activate)
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# Run the application
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app.run(None)
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