Source code for silx.gui.plot3d.actions.mode

# coding: utf-8
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"""This module provides Plot3DAction related to interaction modes.

It provides QAction to rotate or pan a Plot3DWidget.
"""

from __future__ import absolute_import, division

__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "06/09/2017"


import logging

from silx.gui.icons import getQIcon
from .Plot3DAction import Plot3DAction


_logger = logging.getLogger(__name__)


class InteractiveModeAction(Plot3DAction):
    """Base class for QAction changing interactive mode of a Plot3DWidget

    :param parent: See :class:`QAction`
    :param str interaction: The interactive mode this action controls
    :param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
        Plot3DWidget the action is associated with
    """

    def __init__(self, parent, interaction, plot3d=None):
        self._interaction = interaction

        super(InteractiveModeAction, self).__init__(parent, plot3d)
        self.setCheckable(True)
        self.triggered[bool].connect(self._triggered)

    def _triggered(self, checked=False):
        plot3d = self.getPlot3DWidget()
        if plot3d is None:
            _logger.error(
                'Cannot set %s interaction, no associated Plot3DWidget' %
                self._interaction)
        else:
            plot3d.setInteractiveMode(self._interaction)
            self.setChecked(True)

    def setPlot3DWidget(self, widget):
        # Disconnect from previous Plot3DWidget
        plot3d = self.getPlot3DWidget()
        if plot3d is not None:
            plot3d.sigInteractiveModeChanged.disconnect(
                self._interactiveModeChanged)

        super(InteractiveModeAction, self).setPlot3DWidget(widget)

        # Connect to new Plot3DWidget
        if widget is None:
            self.setChecked(False)
        else:
            self.setChecked(widget.getInteractiveMode() == self._interaction)
            widget.sigInteractiveModeChanged.connect(
                self._interactiveModeChanged)

    # Reuse docstring from super class
    setPlot3DWidget.__doc__ = Plot3DAction.setPlot3DWidget.__doc__

    def _interactiveModeChanged(self):
        plot3d = self.getPlot3DWidget()
        if plot3d is None:
            _logger.error('Received a signal while there is no widget')
        else:
            self.setChecked(plot3d.getInteractiveMode() == self._interaction)


class RotateArcballAction(InteractiveModeAction):
    """QAction to set arcball rotation interaction on a Plot3DWidget

    :param parent: See :class:`QAction`
    :param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
        Plot3DWidget the action is associated with
    """

    def __init__(self, parent, plot3d=None):
        super(RotateArcballAction, self).__init__(parent, 'rotate', plot3d)

        self.setIcon(getQIcon('rotate-3d'))
        self.setText('Rotate')
        self.setToolTip('Rotate the view. Press <b>Ctrl</b> to pan.')


class PanAction(InteractiveModeAction):
    """QAction to set pan interaction on a Plot3DWidget

    :param parent: See :class:`QAction`
    :param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
        Plot3DWidget the action is associated with
    """

    def __init__(self, parent, plot3d=None):
        super(PanAction, self).__init__(parent, 'pan', plot3d)

        self.setIcon(getQIcon('pan'))
        self.setText('Pan')
        self.setToolTip('Pan the view. Press <b>Ctrl</b> to rotate.')