| # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """A wrapper for robot manipulation with Touchbot II.""" |
| |
| import os |
| import re |
| import math |
| |
| import common_util |
| import test_conf as conf |
| |
| from firmware_constants import GV, MODE |
| |
| |
| # Define the robot control script names. |
| SCRIPT_LINE = 'line.py' |
| SCRIPT_TAP = 'tap.py' |
| |
| # Define constants for coordinates. |
| # Normally, a gesture is performed within [START, END]. |
| # For tests involved with RangeValidator which intends to verify |
| # the min/max reported coordinates, use [OFF_START, OFF_END] instead |
| # so that the gestures are performed off the edge. |
| START = 0.1 |
| CENTER = 0.5 |
| END = 0.9 |
| OFF_START = -0.05 |
| OFF_END = 1.05 |
| ABOVE_CENTER = 0.3 |
| BELOW_CENTER = 0.7 |
| LEFT_TO_CENTER = 0.3 |
| RIGHT_TO_CENTER = 0.7 |
| |
| class RobotWrapperError(Exception): |
| """An exception class for the robot_wrapper module.""" |
| pass |
| |
| |
| class RobotWrapper: |
| """A class to wrap and manipulate the robot library.""" |
| |
| def __init__(self, board, mode, is_touchscreen, should_calibrate=False): |
| self._board = board |
| self._mode = mode |
| self.is_touchscreen = is_touchscreen |
| self._robot_script_dir = self._get_robot_script_dir() |
| |
| # Each get_contorol_command method maps to a script name. |
| self._robot_script_name_dict = { |
| self._get_control_command_line: SCRIPT_LINE, |
| self._get_control_command_rapid_taps: SCRIPT_TAP, |
| self._get_control_command_single_tap: SCRIPT_TAP, |
| } |
| |
| # Each gesture maps to a get_contorol_command method |
| self._method_of_control_command_dict = { |
| conf.ONE_FINGER_TRACKING: self._get_control_command_line, |
| conf.ONE_FINGER_TO_EDGE: self._get_control_command_line, |
| conf.ONE_FINGER_SWIPE: self._get_control_command_line, |
| conf.ONE_FINGER_TAP: self._get_control_command_single_tap, |
| conf.TWO_FINGER_TRACKING: self._get_control_command_line, |
| conf.RAPID_TAPS: self._get_control_command_rapid_taps, |
| conf.TWO_FINGER_SWIPE: self._get_control_command_line, |
| conf.TWO_FINGER_TAP: self._get_control_command_single_tap, |
| } |
| |
| self._line_dict = { |
| GV.LR: (START, CENTER, END, CENTER), |
| GV.RL: (END, CENTER, START, CENTER), |
| GV.TB: (CENTER, START, CENTER, END), |
| GV.BT: (CENTER, END, CENTER, START), |
| GV.BLTR: (START, END, END, START), |
| GV.TRBL: (END, START, START, END), |
| GV.BRTL: (END, END, START, START), |
| GV.TLBR: (START, START, END, END), |
| |
| # Overshoot for this one-finger gesture only: ONE_FINGER_TO_EDGE |
| GV.CL: (CENTER, CENTER, OFF_START, CENTER), |
| GV.CR: (CENTER, CENTER, OFF_END, CENTER), |
| GV.CT: (CENTER, CENTER, CENTER, OFF_START), |
| GV.CB: (CENTER, CENTER, CENTER, OFF_END), |
| } |
| |
| self._speed_dict = { |
| GV.SLOW: 10, |
| GV.NORMAL: 20, |
| GV.FAST: 30, |
| } |
| |
| self._location_dict = { |
| # location parameters for one-finger taps |
| GV.TL: (START, START), |
| GV.TR: (END, START), |
| GV.BL: (START, END), |
| GV.BR: (END, END), |
| GV.TS: (CENTER, START), |
| GV.BS: (CENTER, END), |
| GV.LS: (START, CENTER), |
| GV.RS: (END, CENTER), |
| GV.CENTER: (CENTER, CENTER), |
| |
| # location parameters for |
| # stationary_finger_not_affected_by_2nd_finger_taps |
| GV.AROUND: ( |
| CENTER, START, |
| RIGHT_TO_CENTER, ABOVE_CENTER, |
| END, CENTER, |
| RIGHT_TO_CENTER, BELOW_CENTER, |
| CENTER, END, |
| ), |
| |
| # location parameters for two-finger taps |
| # In the manual mode: |
| # The original meanings of the following gesture variations: |
| # HORIZONTAL: two fingers aligned horizontally |
| # VERTICAL: two fingers aligned vertically |
| # DIAGONAL: two fingers aligned diagonally |
| # |
| # In the robot mode: |
| # The robot fingers cannot rotate automatically. Have the robot |
| # perform taps on distinct locations instead for convenience. |
| # Note: the location is specified by the first finger, and the |
| # second finger is on the left. Choose the tap locations |
| # that guarantee both fingers on the touch surface. |
| GV.HORIZONTAL: (CENTER, CENTER), |
| GV.VERTICAL: (END, CENTER), |
| GV.DIAGONAL: (CENTER, END), |
| |
| # location parameters for one_finger_click and two_finger_click |
| None: (CENTER, CENTER), |
| } |
| |
| self._build_robot_script_paths() |
| |
| if should_calibrate: |
| self._calibrate_device(board) |
| |
| def _calibrate_device(self, board): |
| """ Have the operator show the robot where the device is.""" |
| calib_script = os.path.join(self._robot_script_dir, |
| 'calibrate_for_new_device.py') |
| calib_cmd = 'python %s %s' % (calib_script, board) |
| print calib_cmd |
| self._execute_control_command(calib_cmd) |
| |
| def _is_robot_action_mode(self): |
| """Is it in robot action mode? |
| |
| In the robot action mode, it actually invokes the robot control script. |
| """ |
| return self._mode in [MODE.ROBOT, MODE.ROBOT_INT] |
| |
| def _raise_error(self, msg): |
| """Only raise an error if it is in the robot action mode.""" |
| if self._is_robot_action_mode(): |
| raise RobotWrapperError(msg) |
| |
| def _get_robot_script_dir(self): |
| """Get the directory of the robot control scripts.""" |
| cmd = 'find %s -type d -name %s' % (conf.robot_lib_path, |
| conf.python_package) |
| path = common_util.simple_system_output(cmd) |
| if path: |
| robot_script_dir = os.path.join(path, conf.gestures_sub_path) |
| if os.path.isdir(robot_script_dir): |
| return robot_script_dir |
| return '' |
| |
| def _get_num_taps(self, gesture): |
| """Determine the number of times to tap.""" |
| matches = re.match('[^0-9]*([0-9]*)[^0-9]*', gesture) |
| return matches.group(1) if matches else None |
| |
| def _reverse_coord_if_is_touchscreen(self, coordinates): |
| """Reverse the coordinates if the device is a touchscreen. |
| |
| E.g., the original coordinates = (0.1, 0.9) |
| After reverse, the coordinates = (1 - 0.1, 1 - 0.9) = (0.9, 0.1) |
| |
| @param coordinates: a tuple of coordinates |
| """ |
| return (tuple(1.0 - c for c in coordinates) if self.is_touchscreen else |
| coordinates) |
| |
| def _get_control_command_line(self, robot_script, gesture, variation): |
| """Get robot control command for gestures using robot line script.""" |
| line_type = 'swipe' if bool('swipe' in gesture) else 'basic' |
| line = speed = None |
| for element in variation: |
| if element in GV.GESTURE_DIRECTIONS: |
| line = self._line_dict[element] |
| elif element in GV.GESTURE_SPEED: |
| speed = self._speed_dict[element] |
| |
| if line_type is 'swipe' and speed is None: |
| speed = self._speed_dict[GV.FAST] |
| |
| if line is None or speed is None: |
| msg = 'Cannot derive the line/speed parameters from %s %s.' |
| self._raise_error(msg % (gesture, variation)) |
| |
| line = self._reverse_coord_if_is_touchscreen(line) |
| start_x, start_y, end_x, end_y = line |
| |
| if 'two_finger' in gesture: |
| finger_spacing = 25 |
| fingers = (0, 1, 0, 1) |
| if end_x != start_x: |
| finger_angle = math.degrees(math.atan((end_y - start_y) / |
| (end_x - start_x))) + 90 |
| else: |
| finger_angle = 0 |
| finger_angle += 45 |
| else: |
| finger_spacing = 17 |
| fingers = (0, 1, 0, 0) |
| finger_angle = 0 |
| |
| para = (robot_script, self._board, |
| start_x, start_y, finger_angle, finger_spacing, |
| end_x, end_y, finger_angle, finger_spacing, |
| fingers[0], fingers[1], fingers[2], fingers[3], |
| speed, line_type) |
| cmd = 'python %s %s.p %f %f %d %d %f %f %d %d %d %d %d %d %f %s' % para |
| return cmd |
| |
| def _get_control_command_rapid_taps(self, robot_script, gesture, variation): |
| num_taps = self._get_num_taps(gesture) |
| return self._get_control_command_taps(robot_script, gesture, |
| variation, num_taps) |
| |
| def _get_control_command_single_tap(self, robot_script, gesture, variation): |
| return self._get_control_command_taps(robot_script, gesture, |
| variation, 1) |
| |
| def _get_control_command_taps(self, robot_script, gesture, |
| variation, num_taps): |
| """Get robot control command for tap gestures. This includes rapid tap |
| tests as well as 1 and 2 finger taps at various locations on the pad. |
| """ |
| location = None |
| for element in variation: |
| location = self._location_dict.get(element) |
| if location: |
| location_str = ' '.join( |
| map(str, self._reverse_coord_if_is_touchscreen(location))) |
| break |
| |
| if location is None: |
| msg = 'Cannot determine the location parameters from %s %s.' |
| self._raise_error(msg % (gesture, variation)) |
| |
| if num_taps is None: |
| msg = 'Cannot determine the number of taps to do from %s.' |
| self._raise_error(msg % gesture) |
| |
| fingers = [0, 1, 0, 1] if 'two' in gesture else [0, 1, 0, 0] |
| angle = 45 if 'two' in gesture else 0 |
| spacing = 17 |
| |
| para = (robot_script, self._board, location_str, angle, spacing, |
| fingers[0], fingers[1], fingers[2], fingers[3], num_taps) |
| control_cmd = 'python %s %s.p %s %d %d %d %d %d %d %s tap' % para |
| return control_cmd |
| |
| def _build_robot_script_paths(self): |
| """Build the robot script paths.""" |
| # Check if the robot script dir could be found. |
| if not self._robot_script_dir: |
| script_path = os.path.join(conf.robot_lib_path, conf.python_package, |
| conf.gestures_sub_path) |
| msg = 'Cannot find robot script directory in "%s".' |
| self._raise_error(msg % script_path) |
| |
| # Build the robot script path dictionary |
| self._robot_script_dict = {} |
| for method in self._robot_script_name_dict: |
| script_name = self._robot_script_name_dict.get(method) |
| |
| # Check if the control script actually exists. |
| robot_script = os.path.join(self._robot_script_dir, script_name) |
| if not os.path.isfile(robot_script): |
| msg = 'Cannot find the robot control script: %s' |
| self._raise_error(msg % robot_script) |
| |
| self._robot_script_dict[method] = robot_script |
| |
| def _get_control_command(self, gesture, variation): |
| """Get robot control command based on the gesture and variation.""" |
| script_method = self._method_of_control_command_dict.get(gesture) |
| if not script_method: |
| self._raise_error('Cannot find "%s" gesture in ' |
| '_method_of_control_command_dict.' % gesture) |
| |
| robot_script = self._robot_script_dict.get(script_method) |
| if not robot_script: |
| msg = 'Cannot find "%s" method in _robot_script_dict.' |
| self._raise_error(msg % script_method) |
| |
| return script_method(robot_script, gesture, variation) |
| |
| def _execute_control_command(self, control_cmd): |
| """Execute a control command.""" |
| print 'Executing: "%s"' % control_cmd |
| if self._is_robot_action_mode(): |
| common_util.simple_system(control_cmd) |
| |
| def control(self, gesture, variation): |
| """Have the robot perform the gesture variation.""" |
| if not isinstance(variation, tuple): |
| variation = (variation,) |
| try: |
| print gesture.name, variation |
| control_cmd = self._get_control_command(gesture.name, variation) |
| print control_cmd |
| self._execute_control_command(control_cmd) |
| except RobotWrapperError as e: |
| print gesture.name, variation |
| print 'RobotWrapperError: %s' % str(e) |
