**Course Title:** PySide6 Application Development **Section Title:** Building Responsive and Dynamic UIs **Topic:** Building a dynamic, multi-view app with tabs and split views.(Lab topic) **Objective:** By the end of this lab, you will be able to design and implement a dynamic, multi-view application with tabs and split views using PySide6. **Prerequisites:** * Familiarity with PySide6 and Qt fundamentals * Understanding of basic widgets, layouts, events, and signals * Knowledge of advanced widgets and forms * Experience with designing responsive and dynamic UIs **Introduction:** In the previous lab, we explored how to design dynamic UIs that adapt to window resizing. In this lab, we will take it a step further by building a dynamic, multi-view application with tabs and split views. This will enable us to create complex UIs that are both functional and visually appealing. **Using QTabWidget for Multi-View Interfaces:** To create a multi-view interface with tabs, we can use the QTabWidget class. This class provides a tab bar that allows users to switch between different views. ```python import sys from PySide6.QtWidgets import QApplication, QTabWidget, QWidget, QVBoxLayout, QLabel class TabWidgetExample(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): self.setGeometry(300, 300, 300, 220) self.setWindowTitle('QTabWidget Example') tab_widget = QTabWidget() tab_widget.addTab(QWidget(), 'Tab 1') tab_widget.addTab(QWidget(), 'Tab 2') tab_widget.addTab(QWidget(), 'Tab 3') label1 = QLabel('This is the content of Tab 1') label1.setParent(tab_widget.widget(0)) label2 = QLabel('This is the content of Tab 2') label2.setParent(tab_widget.widget(1)) label3 = QLabel('This is the content of Tab 3') label3.setParent(tab_widget.widget(2)) layout = QVBoxLayout() layout.addWidget(tab_widget) self.setLayout(layout) if __name__ == '__main__': app = QApplication(sys.argv) ex = TabWidgetExample() ex.show() sys.exit(app.exec()) ``` **Using QSplitter for Split Views:** To create a split view, we can use the QSplitter class. This class provides a horizontal or vertical dividing line that allows users to resize the views. ```python import sys from PySide6.QtWidgets import QApplication, QSplitter, QWidget, QVBoxLayout, QLabel class SplitterExample(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): self.setGeometry(300, 300, 300, 220) self.setWindowTitle('QSplitter Example') splitter = QSplitter() view1 = QWidget() view1_layout = QVBoxLayout() label1 = QLabel('This is the content of View 1') label1.setParent(view1) view1_layout.addWidget(label1) view1.setLayout(view1_layout) view2 = QWidget() view2_layout = QVBoxLayout() label2 = QLabel('This is the content of View 2') label2.setParent(view2) view2_layout.addWidget(label2) view2.setLayout(view2_layout) splitter.addWidget(view1) splitter.addWidget(view2) layout = QVBoxLayout() layout.addWidget(splitter) self.setLayout(layout) if __name__ == '__main__': app = QApplication(sys.argv) ex = SplitterExample() ex.show() sys.exit(app.exec()) ``` **Combining QTabWidget and QSplitter:** To create a dynamic, multi-view application with tabs and split views, we can combine QTabWidget and QSplitter. ```python import sys from PySide6.QtWidgets import QApplication, QTabWidget, QSplitter, QWidget, QVBoxLayout, QLabel class DynamicApplication(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): self.setGeometry(300, 300, 300, 220) self.setWindowTitle('Dynamic Application Example') tab_widget = QTabWidget() tab_widget.addTab(QWidget(), 'Tab 1') tab_widget.addTab(QWidget(), 'Tab 2') view1 = QWidget() view1_layout = QVBoxLayout() splitter = QSplitter() view1_a = QWidget() view1_a_layout = QVBoxLayout() label1 = QLabel('This is the content of View 1A') label1.setParent(view1_a) view1_a_layout.addWidget(label1) view1_a.setLayout(view1_a_layout) view1_b = QWidget() view1_b_layout = QVBoxLayout() label2 = QLabel('This is the content of View 1B') label2.setParent(view1_b) view1_b_layout.addWidget(label2) view1_b.setLayout(view1_b_layout) splitter.addWidget(view1_a) splitter.addWidget(view1_b) view1_layout.addWidget(splitter) view1.setLayout(view1_layout) tab_widget.widget(0).setLayout(view1_layout) view2 = QWidget() view2_layout = QVBoxLayout() splitter = QSplitter() view2_a = QWidget() view2_a_layout = QVBoxLayout() label3 = QLabel('This is the content of View 2A') label3.setParent(view2_a) view2_a_layout.addWidget(label3) view2_a.setLayout(view2_a_layout) view2_b = QWidget() view2_b_layout = QVBoxLayout() label4 = QLabel('This is the content of View 2B') label4.setParent(view2_b) view2_b_layout.addWidget(label4) view2_b.setLayout(view2_b_layout) splitter.addWidget(view2_a) splitter.addWidget(view2_b) view2_layout.addWidget(splitter) view2.setLayout(view2_layout) tab_widget.widget(1).setLayout(view2_layout) layout = QVBoxLayout() layout.addWidget(tab_widget) self.setLayout(layout) if __name__ == '__main__': app = QApplication(sys.argv) ex = DynamicApplication() ex.show() sys.exit(app.exec()) ``` **Conclusion:** In this lab, we have learned how to build a dynamic, multi-view application with tabs and split views using PySide6. We have explored the QTabWidget and QSplitter classes and how to combine them to create a complex UI. With this knowledge, you can now design and implement your own dynamic, multi-view applications. **Practice Exercise:** Try to modify the DynamicApplication example to add more tabs and split views. Experiment with different layouts and widgets to create a complex UI. **External Resources:** * [PySide6 Documentation](https://doc.qt.io/qtforpython/PySide6/) If you have any questions or need help, please leave a comment below.