Python PyQt5.QtWidgets.QScrollBar() Examples

The following are 4 code examples of PyQt5.QtWidgets.QScrollBar(). 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. You may also want to check out all available functions/classes of the module PyQt5.QtWidgets , or try the search function .
Example #1
Source File: filter.py    From picasso with MIT License 6 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
Example #2
Source File: terminal_dialog.py    From uPyLoader with 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 #3
Source File: terminal_dialog.py    From uPyLoader with 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 #4
Source File: flash_dialog.py    From uPyLoader with 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)