app.py 文件源码

def refresh(self):
        """Refresh the playblast preview"""

        frame = cmds.currentTime(query=True)

        # When playblasting outside of an undo queue it seems that undoing
        # actually triggers a reset to frame 0. As such we sneak in the current
        # time into the undo queue to enforce correct undoing.
        cmds.currentTime(frame, update=True)

        # check if plugin outputs are correct
        valid = self.validator()
        if not valid:
            return

        with lib.no_undo():
            options = self.options_getter()
            tempdir = tempfile.mkdtemp()

            # override settings that are constants for the preview
            options = options.copy()
            options['filename'] = None
            options['complete_filename'] = os.path.join(tempdir, "temp.jpg")
            options['width'] = self.preview_width
            options['height'] = self.preview_height
            options['viewer'] = False
            options['frame'] = frame
            options['off_screen'] = True
            options['format'] = "image"
            options['compression'] = "jpg"
            options['sound'] = None

            fname = capture.capture(**options)
            if not fname:
                log.warning("Preview failed")
                return

            image = QtGui.QPixmap(fname)
            self.preview.setPixmap(image)
            os.remove(fname)