gui_qt.py

"""
Run triangle/cube example in the Qt GUI backend.
Works with either PySide6, PyQt6, PyQt5 or PySide2.
"""

# run_example = false

import importlib

# For the sake of making this example Just Work, we try multiple QT libs
for lib in ("PySide6", "PyQt6", "PySide2", "PyQt5"):
    try:
        QtWidgets = importlib.import_module(".QtWidgets", lib)
        break
    except ModuleNotFoundError:
        pass


from wgpu.gui.qt import WgpuCanvas  # noqa: E402

from triangle import setup_drawing_sync  # noqa: E402


app = QtWidgets.QApplication([])
canvas = WgpuCanvas(title=f"Triangle example on {WgpuCanvas.__name__}")

draw_frame = setup_drawing_sync(canvas)


@canvas.request_draw
def animate():
    draw_frame()
    canvas.request_draw()


# Enter Qt event loop (compatible with qt5/qt6)
app.exec() if hasattr(app, "exec") else app.exec_()