ROI Nudge Tool

#HeaderInfo

#type=ROITool

#name=Nudge ROIs

#version=0.0.1

#author=adminmblackledge

#EndHeaderInfo

import matplotlib.pyplot as pl

from matplotlib.widgets import Button, Slider

import numpy as np

class roi_nudger(object):

    def _shift_rois(self, shift):

        # Shift the rois in the current browser by a specified amount

        # Params:

        # =======

        #   shift: 2-tuple

        #          The amount by which to shift the ROI in the 

        #          (up-down, left-right) direction.

        vc = osirix.frontmostViewer()

        rois = vc.selectedROIs()

        for roi in rois:

            roi.roiMove(shift[0], shift[1])

        vc.needsDisplayUpdate()

    # Widget events

    def _up_pushed(self, evt):

        self._shift_rois([0, int(-self.slider.val)])

    def _left_pushed(self, evt):

        self._shift_rois([int(-self.slider.val), 0])

    def _right_pushed(self, evt):

        self._shift_rois([int(+self.slider.val), 0])

    def _down_pushed(self, evt):

        self._shift_rois([0, int(+self.slider.val)])

    def _close_event(self, evt):

        stopRuntimeLoop() # Required for installed pyOsiriX plugins

    def display(self):

        # Begin display of the matploblib window

        self.fig = pl.figure(figsize = (3, 3))

        ax_slider = self.fig.add_axes([0.15, 0.05, 0.7, 0.05])

        self.slider = Slider(ax_slider, label="Shift", valmin=0, valmax=15, valinit=2, valfmt="%d")

        ax_down = self.fig.add_axes([0.4, 0.2, 0.2, 0.2])

        self.button_down =   Button(ax_down, label = 'D')

        self.button_down.on_clicked(self._down_pushed)

        ax_left = self.fig.add_axes([0.2, 0.4, 0.2, 0.2])

        self.button_left = Button(ax_left, label='L')

        self.button_left.on_clicked(self._left_pushed)

        ax_right = self.fig.add_axes([0.6, 0.4, 0.2, 0.2])

        self.button_right = Button(ax_right, label='R')

        self.button_right.on_clicked(self._right_pushed)

        ax_up = self.fig.add_axes([0.4, 0.6, 0.2, 0.2])

        self.button_up = Button(ax_up, label='U')

        self.button_up.on_clicked(self._up_pushed)

        self.fig.canvas.mpl_connect('close_event', self._close_event)

        ax_text = self.fig.add_axes([0.2, 0.85, 0.6, 0.1])

        ax_text.axis('off')

        ax_text.text(0.5,  0.0, "Nudge ROIs", verticalalignment = 'bottom', horizontalalignment = 'center')

        pl.show()

startRuntimeLoop() # Required for installed pyOsiriX plugins to keep the event loop going.

roi = roi_nudger()

roi.display()