Python PyQt5.QtWidgets.QScrollBar() Examples

The following are 4 code examples for showing how to use PyQt5.QtWidgets.QScrollBar(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
Project: uPyLoader   Author: BetaRavener   File: terminal_dialog.py    License: MIT License 5 votes vote down vote up
def _scroll_released(self):
        if not self.autoscrollCheckBox.isChecked():
            self._auto_scroll = False
            return

        scrollbar = self.outputTextEdit.verticalScrollBar()
        assert isinstance(scrollbar, QScrollBar)
        current_scroll = scrollbar.value()
        self._auto_scroll = current_scroll >= scrollbar.maximum() 
Example 2
Project: uPyLoader   Author: BetaRavener   File: terminal_dialog.py    License: MIT License 5 votes vote down vote up
def update_content(self):
        new_content = self.terminal.read()
        new_content = self.process_backspaces(new_content)
        if not new_content:
            return

        scrollbar = self.outputTextEdit.verticalScrollBar()
        assert isinstance(scrollbar, QScrollBar)
        # Preserve scroll while updating content
        current_scroll = scrollbar.value()

        prev_cursor = self.outputTextEdit.textCursor()
        self.outputTextEdit.moveCursor(QTextCursor.End)
        # Use any backspaces that were left in input to delete text
        cut = 0
        for x in new_content:
            if x != "\b":
                break
            self.outputTextEdit.textCursor().deletePreviousChar()
            cut += 1
        self.outputTextEdit.insertPlainText(new_content[cut:])
        self.outputTextEdit.setTextCursor(prev_cursor)

        if self._auto_scroll:
            scrollbar.setValue(scrollbar.maximum())
        else:
            scrollbar.setValue(current_scroll) 
Example 3
Project: uPyLoader   Author: BetaRavener   File: flash_dialog.py    License: MIT License 5 votes vote down vote up
def _update_output(self):
        scrollbar = self.outputEdit.verticalScrollBar()
        assert isinstance(scrollbar, QScrollBar)
        # Preserve scroll while updating content
        current_scroll = scrollbar.value()
        scrolling = scrollbar.isSliderDown()

        with self._flash_output_mutex:
            self.outputEdit.setPlainText(self._flash_output.decode('utf-8', errors="ignore"))

        if not scrolling:
            scrollbar.setValue(scrollbar.maximum())
        else:
            scrollbar.setValue(current_scroll) 
Example 4
Project: picasso   Author: jungmannlab   File: filter.py    License: MIT License 5 votes vote down vote up
def __init__(self):
        super().__init__()
        # Init GUI
        self.setWindowTitle("Picasso: Filter")
        self.resize(1100, 750)
        this_directory = os.path.dirname(os.path.realpath(__file__))
        icon_path = os.path.join(this_directory, "icons", "filter.ico")
        icon = QtGui.QIcon(icon_path)
        self.setWindowIcon(icon)
        menu_bar = self.menuBar()
        file_menu = menu_bar.addMenu("File")
        open_action = file_menu.addAction("Open")
        open_action.setShortcut(QtGui.QKeySequence.Open)
        open_action.triggered.connect(self.open_file_dialog)
        file_menu.addAction(open_action)
        save_action = file_menu.addAction("Save")
        save_action.setShortcut(QtGui.QKeySequence.Save)
        save_action.triggered.connect(self.save_file_dialog)
        file_menu.addAction(save_action)
        plot_menu = menu_bar.addMenu("Plot")
        histogram_action = plot_menu.addAction("Histogram")
        histogram_action.setShortcut("Ctrl+H")
        histogram_action.triggered.connect(self.plot_histogram)
        scatter_action = plot_menu.addAction("2D Histogram")
        scatter_action.setShortcut("Ctrl+D")
        scatter_action.triggered.connect(self.plot_hist2d)
        self.table_view = TableView(self, self)
        main_widget = QtWidgets.QWidget()
        hbox = QtWidgets.QHBoxLayout(main_widget)
        hbox.setContentsMargins(0,0,0,0)
        hbox.setSpacing(0)
        self.setCentralWidget(main_widget)
        hbox.addWidget(self.table_view)
        self.vertical_scrollbar = QtWidgets.QScrollBar()
        self.vertical_scrollbar.valueChanged.connect(self.display_locs)
        hbox.addWidget(self.vertical_scrollbar)
        self.hist_windows = {}
        self.hist2d_windows = {}
        self.filter_log = {}
        self.locs = None