Method to get napari style in magicgui based windows

Example how to embed magicgui widget in dialog to inherit style from main napari window.

Tags: gui, interactivity

from magicgui import magicgui
from qtpy.QtWidgets import (
    QDialog,
    QGridLayout,
    QLabel,
    QPushButton,
    QSpinBox,
    QVBoxLayout,
    QWidget,
)

import napari
from napari.qt import get_stylesheet
from napari.settings import get_settings


# The magicgui widget shown by selecting the 'Show widget' button of MyWidget
@magicgui
def sample_add(a: int, b: int) -> int:
    return a + b

def change_style():
    sample_add.native.setStyleSheet(get_stylesheet(get_settings().appearance.theme))


get_settings().appearance.events.theme.connect(change_style)
change_style()


class MyDialog(QDialog):
    def __init__(self, parent=None) -> None:
        super().__init__(parent)
        self.first_input = QSpinBox()
        self.second_input = QSpinBox()
        self.btn = QPushButton('Add')
        layout = QGridLayout()
        layout.addWidget(QLabel('first input'), 0, 0)
        layout.addWidget(self.first_input, 0, 1)
        layout.addWidget(QLabel('second input'), 1, 0)
        layout.addWidget(self.second_input, 1, 1)
        layout.addWidget(self.btn, 2, 0, 1, 2)
        self.setLayout(layout)
        self.btn.clicked.connect(self.run)

    def run(self):
        print('run', self.first_input.value() + self.second_input.value())
        self.close()

class MyWidget(QWidget):
    def __init__(self) -> None:
        super().__init__()
        self.btn1 = QPushButton('Show dialog')
        self.btn1.clicked.connect(self.show_dialog)
        self.btn2 = QPushButton('Show widget')
        self.btn2.clicked.connect(self.show_widget)
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.btn1)
        self.layout.addWidget(self.btn2)
        self.setLayout(self.layout)

    def show_dialog(self):
        dialog = MyDialog(self)
        dialog.exec_()

    def show_widget(self):
        sample_add.show()



viewer = napari.Viewer()

widget = MyWidget()
viewer.window.add_dock_widget(widget, area='right')
napari.run()