示例#1
0
def make_env():
    env = gym.make("BreakoutDeterministic-v4")
    env = PreprocessAtari(env)
    env = FrameBuffer(env, n_frames=4, dim_order='tensorflow')
    return env
示例#2
0
    if check_shapes:
        assert predicted_next_qvalues.data.dim(
        ) == 2, "make sure you predicted q-values for all actions in next state"
        assert next_state_values.data.dim(
        ) == 1, "make sure you computed V(s') as maximum over just the actions axis and not all axes"
        assert target_qvalues_for_actions.data.dim(
        ) == 1, "there's something wrong with target q-values, they must be a vector"

    return loss


if __name__ == '__main__':
    env = gym.make("BreakoutDeterministic-v0")  # create raw env
    env = PreprocessAtari(env)
    env = FrameBuffer(env, n_frames=4, dim_order='pytorch')

    observation_shape = env.observation_space.shape
    n_actions = env.action_space.n
    state_dim = observation_shape
    env.reset()
    obs, _, _, _ = env.step(env.action_space.sample())
    agent = DQNAgent(state_dim, n_actions, epsilon=0.5)
    target_network = DQNAgent(state_dim, n_actions)

    exp_replay = ReplayBuffer(10)
    for _ in range(30):
        exp_replay.add(env.reset(),
                       env.action_space.sample(),
                       1.0,
                       env.reset(),
    def __init__(self, width, height, aa=1):
        """
        :param width and height: size of the window in pixels.

        :param aa: antialiasing level, a higher value will give better
            result but also slow down the animation. (aa=2 is recommended)
        """
        pyglet.window.Window.__init__(self,
                                      width,
                                      height,
                                      caption="Wythoff Explorer",
                                      resizable=True,
                                      visible=False,
                                      vsync=False)
        self._start_time = time.clock()
        self._frame_count = 0  # count number of frames rendered so far
        self._speed = 1  # control speed of the animation
        self.aa = aa
        # shader A draws the UI
        self.shaderA = Shader(["./glsl/wythoff.vert"],
                              ["./glsl/common.frag", "./glsl/BufferA.frag"])
        # shadwr B draws the polyhedra
        self.shaderB = Shader(["./glsl/wythoff.vert"],
                              ["./glsl/common.frag", "./glsl/BufferB.frag"])
        # shader C puts them together
        self.shaderC = Shader(["./glsl/wythoff.vert"],
                              ["./glsl/common.frag", "./glsl/main.frag"])
        self.font_texture = create_image_texture(FONT_TEXTURE)
        self.iChannel0 = pyglet.image.Texture.create_for_size(
            gl.GL_TEXTURE_2D, width, height, gl.GL_RGBA32F_ARB)
        self.iChannel1 = pyglet.image.Texture.create_for_size(
            gl.GL_TEXTURE_2D, width, height, gl.GL_RGBA32F_ARB)
        gl.glActiveTexture(gl.GL_TEXTURE0)
        gl.glBindTexture(self.iChannel0.target, self.iChannel0.id)
        gl.glActiveTexture(gl.GL_TEXTURE1)
        gl.glBindTexture(self.iChannel1.target, self.iChannel1.id)
        gl.glActiveTexture(gl.GL_TEXTURE2)
        gl.glBindTexture(gl.GL_TEXTURE_2D, self.font_texture)

        # frame buffer A renders the UI to texture iChannel0
        with FrameBuffer() as self.bufferA:
            self.bufferA.attach_texture(self.iChannel0)
        # frame buffer B render the polyhedra to texture iChannel1
        with FrameBuffer() as self.bufferB:
            self.bufferB.attach_texture(self.iChannel1)

        # initialize the shaders

        with self.shaderA:
            self.shaderA.vertex_attrib("position",
                                       [-1, -1, 1, -1, -1, 1, 1, 1])
            self.shaderA.uniformf("iResolution", width, height, 0.0)
            self.shaderA.uniformf("iTime", 0.0)
            self.shaderA.uniformf("iMouse", 0.0, 0.0, 0.0, 0.0)
            self.shaderA.uniformi("iChannel0", 0)
            self.shaderA.uniformi("iFrame", 0)

        with self.shaderB:
            self.shaderB.vertex_attrib("position",
                                       [-1, -1, 1, -1, -1, 1, 1, 1])
            self.shaderB.uniformf("iResolution", width, height, 0.0)
            self.shaderB.uniformf("iTime", 0.0)
            self.shaderB.uniformf("iMouse", 0.0, 0.0, 0.0, 0.0)
            self.shaderB.uniformi("iChannel0", 0)
            self.shaderB.uniformi("AA", self.aa)

        with self.shaderC:
            self.shaderC.vertex_attrib("position",
                                       [-1, -1, 1, -1, -1, 1, 1, 1])
            self.shaderC.uniformf("iResolution", width, height, 0.0)
            self.shaderC.uniformf("iTime", 0.0)
            self.shaderC.uniformf("iMouse", 0.0, 0.0, 0.0, 0.0)
            self.shaderC.uniformi("iChannel0", 0)
            self.shaderC.uniformi("iChannel1", 1)
            self.shaderC.uniformi("iTexture", 2)
示例#4
0
    def __init__(self,
                 width,
                 height,
                 scale=1.5,
                 conf=1,
                 mask=None,
                 flip=False,
                 video=False,
                 sample_rate=None,
                 video_rate=None):
        """
        Parameters
        ----------
        :width & height: size of the window in pixels.
        :scale: scaling factor of the texture.
        :conf: line number of the config in the file (`config.txt`).
        :mask: a user-specified image that is used to control the growth of the pattern.
        :flip: flip the white/black pixels in the mask image, only meaningful if there is a mask image.
        :video: whether the video is turned on or off.
        :sample_rate: sample a frame from the animation every these frames.
        :video_rate: frames per second of the video.
        """
        pyglet.window.Window.__init__(self,
                                      width,
                                      height,
                                      caption="GrayScott Simulation",
                                      resizable=True,
                                      visible=False,
                                      vsync=False)

        # use two shaders, one for doing the computations and one for rendering to the screen.
        self.reaction_shader = Shader(["./glsl/reaction.vert"],
                                      ["./glsl/reaction.frag"])
        self.render_shader = Shader(["./glsl/render.vert"],
                                    ["./glsl/render.frag"])
        self.tex_width, self.tex_height = int(width / scale), int(height /
                                                                  scale)

        try:
            self.species, self.palette = self.load_config(conf)
            print("> Current species: " + self.species + "\n")
        except:
            conf = "unstable: #00000000 #00FF0033 #FFFF0035 #FF000066 #FFFFFF99"
            self.species, self.palette = parse(conf)
            print("> Failed to load the config, using the default one.\n")

        self.species_list = list(ALL_SPECIES.keys())

        # create the uv_texture
        uv_grid = np.zeros((self.tex_height, self.tex_width, 4),
                           dtype=np.float32)
        uv_grid[:, :, 0] = 1.0
        rand_rows = np.random.choice(range(self.tex_height), 5)
        rand_cols = np.random.choice(range(self.tex_width), 5)
        uv_grid[rand_rows, rand_cols, 1] = 1.0
        self.uv_texture = create_texture_from_ndarray(uv_grid)

        # create the mask_texture
        mask_grid = np.ones_like(uv_grid)
        if mask is not None:
            img = Image.open(mask).convert("L").resize(
                (self.tex_width, self.tex_height))
            img = (np.asarray(img) / 255.0).astype(np.float32)
            if flip:
                img = 1.0 - img
            mask_grid[:, :, 0] = img[::-1]
        self.mask_texture = create_texture_from_ndarray(mask_grid)

        # bind the two textures
        gl.glActiveTexture(gl.GL_TEXTURE0)
        gl.glBindTexture(self.uv_texture.target, self.uv_texture.id)
        gl.glActiveTexture(gl.GL_TEXTURE1)
        gl.glBindTexture(self.mask_texture.target, self.mask_texture.id)

        # use an invisible buffer to do the computations.
        with FrameBuffer() as self.fbo:
            self.fbo.attach_texture(self.uv_texture)

        # we need this because the program samples the position of the mouse in discrete times.
        self.mouse_down = False

        # initialize the two shaders
        with self.reaction_shader:
            self.reaction_shader.vertex_attrib("position",
                                               [-1, -1, 1, -1, -1, 1, 1, 1])
            self.reaction_shader.vertex_attrib("texcoord",
                                               [0, 0, 1, 0, 0, 1, 1, 1])
            self.reaction_shader.uniformi("uv_texture", 0)
            self.reaction_shader.uniformi("mask_texture", 1)
            self.reaction_shader.uniformf("iResolution", self.tex_width,
                                          self.tex_height, 0)
            self.reaction_shader.uniformf("iMouse", -1, -1)
            self.reaction_shader.uniformf("params", *ALL_SPECIES[self.species])

        with self.render_shader:
            self.render_shader.vertex_attrib("position",
                                             [-1, -1, 1, -1, -1, 1, 1, 1])
            self.render_shader.vertex_attrib("texcoord",
                                             [0, 0, 1, 0, 0, 1, 1, 1])
            self.render_shader.uniformi("uv_texture", 0)
            self.render_shader.uniformfv("palette", 5, self.palette)

        self.video_on = video
        self.buffer = pyglet.image.get_buffer_manager().get_color_buffer()

        self.sample_rate = sample_rate
        self.video_rate = video_rate

        self.frame_count = 0

        if video:
            self.ffmpeg_pipe = self.create_new_pipe()

        self.start_time = time.time()
示例#5
0
    def __init__(self):
        super(OpenMVIDE, self).__init__()

        ############################################################################################################
        ## Connector detector

        # Connector detects camera connect/disconnect
        self.connector = OpenMVConnector()
        self.connector.start()

        # Catch connect / disconnect notifications
        self.connector.found.connect(self.do_connect)
        self.connector.not_found.connect(self.do_disconnect)

        ############################################################################################################
        ## Paths

        # default working directory
        self.dir = os.path.dirname(os.path.realpath(__file__)) + '/'

        # default icons dir
        self.icon_dir = self.dir + 'icons/'

        # default examples location
        self.example_dir = self.dir + 'examples/'

        # default scripts location
        self.script_dir = self.dir + 'scripts/'

        # Location for binary firmware
        self.flash_dir = self.dir + '../bin/'

        # Location for config file
        self.config_file = 'openmv.config'

        # script filename
        self.filename = ''

        ############################################################################################################
        ## Configuration

        default = {'board': 'openmv1',
                   'filename': '',
                   'recent': '',
                   'bin': '',
                   'auto_flash': 'False',
                   'auto_connect': 'True',
                   'width': '800',
                   'height': '600',
                   'scale': '1',
                   'serial_port': '/dev/openmvcam'}

        # load config
        config = self.load_config(default)

        ############################################################################################################
        ## State variables

        # Connect status
        self.connected = False

        # Script run status
        self.running = False

        # Frame buffer
        self.image = None

        # Recent scripts
        self.recent = set()
        files = config.get('main', 'recent')
        for f in files.split(','):
            if f:
                self.recent.add(f)

        # Recent binary
        self.flash_file = config.get('main', 'bin')

        # Serial port
        self.serial_port = config.get('main', 'serial_port')

        # Board version
        self.board = config.get('main', 'board')

        # default auto connect behavior
        self.auto_connect = config.getboolean('main', 'auto_connect')
        self.connector.set_auto_connect(self.auto_connect)

        # default auto flash behavior
        self.auto_flash = config.getboolean('main', 'auto_flash')

        ############################################################################################################
        ## Components

        # Editor
        self.editor = PyEditor(self)
        self.editor.setMinimumWidth(300)
        self.editor.setMinimumHeight(200)
        self.editor.document().contentsChanged.connect(self.update_ui)

        # FrameBuffer
        self.framebuffer = FrameBuffer()
        self.framebuffer.set_scale(config.getfloat('main', 'scale'))
        self.framebuffer.show()
        self.framebuffer.error.connect(self.do_disconnect)

        ############################################################################################################
        ## Actions

        self.exit_action = QAction(QIcon(self.icon_dir + 'Exit.png'), 'Exit', self)
        self.exit_action.setStatusTip('Exit application')
        self.exit_action.setShortcut('Ctrl+Q')
        self.exit_action.triggered.connect(self.do_quit)

        self.connect_action = QAction(QIcon(self.icon_dir + 'Connect.png'), 'Connect', self)
        self.connect_action.setStatusTip('Connect to camera')
        self.connect_action.triggered.connect(self.do_connect)

        self.reset_action = QAction(QIcon(self.icon_dir + 'Eject.png'), 'Reset', self)
        self.reset_action.setStatusTip('Reset camera and disconnect')
        self.reset_action.triggered.connect(self.do_disconnect)

        self.flash_action = QAction(QIcon(self.icon_dir + 'Lightning.png'), 'Flash', self)
        self.flash_action.setStatusTip('Flash new firmware')
        self.flash_action.triggered.connect(self.do_flash)

        self.run_action = QAction(QIcon(self.icon_dir + 'Run.png'), 'Run', self)
        self.run_action.setStatusTip('Run script')
        self.run_action.triggered.connect(self.do_run)

        self.stop_action = QAction(QIcon(self.icon_dir + 'Stop.png'), 'Stop', self)
        self.stop_action.setStatusTip('Stop script')
        self.stop_action.triggered.connect(self.do_stop)

        self.new_action = QAction(QIcon(self.icon_dir + 'NewDocument.png'), 'New', self)
        self.new_action.setStatusTip('New script')
        self.new_action.triggered.connect(self.do_new)

        self.open_action = QAction(QIcon(self.icon_dir + 'Open.png'), 'Open...', self)
        self.open_action.setStatusTip('Open script')
        self.open_action.setShortcut('Ctrl+O')
        self.open_action.triggered.connect(self.do_open)

        self.save_action = QAction(QIcon(self.icon_dir + 'Save.png'), 'Save', self)
        self.save_action.setStatusTip('Save script')
        self.save_action.setShortcut('Ctrl+S')
        self.save_action.triggered.connect(self.do_save)

        self.save_as_action = QAction(QIcon(self.icon_dir + 'SaveAs.png'), 'Save As...', self)
        self.save_as_action.setStatusTip('Save script as new file')
        self.save_as_action.triggered.connect(self.do_save_as)

        self.zoom_in_action = QAction(QIcon(self.icon_dir + 'ZoomIn.png'), 'Zoom In', self)
        self.zoom_in_action.setStatusTip('Make frame buffer preview bigger')
        self.zoom_in_action.triggered.connect(self.do_zoom_in)

        self.zoom_out_action = QAction(QIcon(self.icon_dir + 'ZoomOut.png'), 'Zoom Out', self)
        self.zoom_out_action.setStatusTip('Make frame buffer preview smaller')
        self.zoom_out_action.triggered.connect(self.do_zoom_out)

        self.zoom_reset_action = QAction(QIcon(self.icon_dir + 'ZoomReset.png'), 'Zoom Reset', self)
        self.zoom_reset_action.setStatusTip('Reset frame buffer preview size')
        self.zoom_reset_action.triggered.connect(self.do_zoom_reset)

        self.cut_action = QAction(QIcon(self.icon_dir+'Cut.png'), 'Cut', self)
        self.cut_action.triggered.connect(self.editor.cut)
        self.cut_action.setShortcut(QKeySequence.Cut)

        self.paste_action = QAction(QIcon(self.icon_dir+'Paste.png'), 'Paste', self)
        self.paste_action.triggered.connect(self.editor.paste)
        self.paste_action.setShortcut(QKeySequence.Paste)

        self.copy_action = QAction(QIcon(self.icon_dir+'Copy.png'), 'Copy', self)
        self.copy_action.triggered.connect(self.editor.copy)
        self.copy_action.setShortcut(QKeySequence.Copy)

        self.auto_flash_action = QAction('Auto-flash', self)
        self.auto_flash_action.setStatusTip('Automatically detect DFU mode and flash firmware')
        self.auto_flash_action.triggered.connect(self.do_auto_flash)
        self.auto_flash_action.setCheckable(True)
        self.auto_flash_action.setDisabled(True)

        self.auto_connect_action = QAction('Auto-connect', self)
        self.auto_connect_action.setStatusTip('Automatically connect to OpenMV when detected')
        self.auto_connect_action.triggered.connect(self.do_auto_connect)
        self.auto_connect_action.setCheckable(True)

        self.about_action = QAction(QIcon(self.icon_dir+'About.png'), 'About', self)
        self.about_action.triggered.connect(self.do_about)

        ############################################################################################################
        ## Toolbars

        self.toolbar1 = self.addToolBar('toolbar1')
        self.toolbar1.addAction(self.connect_action)
        self.toolbar1.addAction(self.reset_action)
        self.toolbar1.addAction(self.flash_action)
        self.toolbar1.addAction(self.run_action)
        self.toolbar1.addAction(self.stop_action)

        self.toolbar2 = self.addToolBar('toolbar2')
        self.toolbar2.addAction(self.new_action)
        self.toolbar2.addAction(self.open_action)
        self.toolbar2.addAction(self.save_action)

        self.toolbar3 = self.addToolBar('toolbar3')
        self.toolbar3.addAction(self.zoom_reset_action)
        self.toolbar3.addAction(self.zoom_out_action)
        self.toolbar3.addAction(self.zoom_in_action)

        ############################################################################################################
        ## Menus
        menu_bar = self.menuBar()

        file_menu = menu_bar.addMenu('&File')
        file_menu.addAction(self.new_action)
        file_menu.addAction(self.open_action)
        file_menu.addAction(self.save_action)
        file_menu.addAction(self.save_as_action)
        file_menu.addSeparator()
        self.example_menu = QMenu('Examples')
        self.recent_menu = QMenu('Recent')
        file_menu.addMenu(self.example_menu)
        file_menu.addMenu(self.recent_menu)
        file_menu.addSeparator()
        file_menu.addAction(self.exit_action)

        edit_menu = menu_bar.addMenu('&Edit')
        edit_menu.addAction(self.cut_action)
        edit_menu.addAction(self.copy_action)
        edit_menu.addAction(self.paste_action)

        openmv_menu = menu_bar.addMenu('&Tools')
        openmv_menu.addAction(self.connect_action)
        openmv_menu.addAction(self.reset_action)
        openmv_menu.addAction(self.flash_action)
        openmv_menu.addAction(self.auto_connect_action)
        openmv_menu.addAction(self.auto_flash_action)

        view_menu = menu_bar.addMenu('&View')
        view_menu.addAction(self.zoom_in_action)
        view_menu.addAction(self.zoom_out_action)
        view_menu.addAction(self.zoom_reset_action)

        help_menu = menu_bar.addMenu('&Help')
        help_menu.addAction(self.about_action)

        # Dynamically update dyanmic menus
        file_menu.aboutToShow.connect(self.update_example_menu)
        file_menu.aboutToShow.connect(self.update_recent_menu)

        # Connect dynamic menu items with correct handlers
        self.example_menu.triggered.connect(self.do_open_example)
        self.recent_menu.triggered.connect(self.do_open_recent)

        ############################################################################################################
        ## Main Window

        # Status bar
        self.statusBar()

        # Geometry
        self.setGeometry(50, 50, config.getint('main', 'width'), config.getint('main', 'height'))

        # Vertical box for framebuffer
        pvbox = QVBoxLayout()
        pvbox.addWidget(self.framebuffer)
        pvbox.addStretch(1)

        # Horizontal box for editor + framebuffer
        hbox = QHBoxLayout()
        hbox.addWidget(self.editor)
        hbox.addLayout(pvbox)

        self.terminal = SerialTerminal(self)
        self.terminal.setMinimumHeight(100)
        self.terminal.setMaximumHeight(200)
        self.terminal.show()
        self.serial = Serial()
        self.terminal.error.connect(self.do_disconnect)

        # Vertical box for hbox + terminal
        vbox = QVBoxLayout()
        vbox.addLayout(hbox)
        vbox.addWidget(self.terminal)
        w = QWidget()
        w.setLayout(vbox)
        self.setCentralWidget(w)

        # UI Statuses
        self.update_ui()

        self.show()
示例#6
0
class OpenMVIDE(QMainWindow):
    def __init__(self):
        super(OpenMVIDE, self).__init__()

        ############################################################################################################
        ## Connector detector

        # Connector detects camera connect/disconnect
        self.connector = OpenMVConnector()
        self.connector.start()

        # Catch connect / disconnect notifications
        self.connector.found.connect(self.do_connect)
        self.connector.not_found.connect(self.do_disconnect)

        ############################################################################################################
        ## Paths

        # default working directory
        self.dir = os.path.dirname(os.path.realpath(__file__)) + '/'

        # default icons dir
        self.icon_dir = self.dir + 'icons/'

        # default examples location
        self.example_dir = self.dir + 'examples/'

        # default scripts location
        self.script_dir = self.dir + 'scripts/'

        # Location for binary firmware
        self.flash_dir = self.dir + '../bin/'

        # Location for config file
        self.config_file = 'openmv.config'

        # script filename
        self.filename = ''

        ############################################################################################################
        ## Configuration

        default = {'board': 'openmv1',
                   'filename': '',
                   'recent': '',
                   'bin': '',
                   'auto_flash': 'False',
                   'auto_connect': 'True',
                   'width': '800',
                   'height': '600',
                   'scale': '1',
                   'serial_port': '/dev/openmvcam'}

        # load config
        config = self.load_config(default)

        ############################################################################################################
        ## State variables

        # Connect status
        self.connected = False

        # Script run status
        self.running = False

        # Frame buffer
        self.image = None

        # Recent scripts
        self.recent = set()
        files = config.get('main', 'recent')
        for f in files.split(','):
            if f:
                self.recent.add(f)

        # Recent binary
        self.flash_file = config.get('main', 'bin')

        # Serial port
        self.serial_port = config.get('main', 'serial_port')

        # Board version
        self.board = config.get('main', 'board')

        # default auto connect behavior
        self.auto_connect = config.getboolean('main', 'auto_connect')
        self.connector.set_auto_connect(self.auto_connect)

        # default auto flash behavior
        self.auto_flash = config.getboolean('main', 'auto_flash')

        ############################################################################################################
        ## Components

        # Editor
        self.editor = PyEditor(self)
        self.editor.setMinimumWidth(300)
        self.editor.setMinimumHeight(200)
        self.editor.document().contentsChanged.connect(self.update_ui)

        # FrameBuffer
        self.framebuffer = FrameBuffer()
        self.framebuffer.set_scale(config.getfloat('main', 'scale'))
        self.framebuffer.show()
        self.framebuffer.error.connect(self.do_disconnect)

        ############################################################################################################
        ## Actions

        self.exit_action = QAction(QIcon(self.icon_dir + 'Exit.png'), 'Exit', self)
        self.exit_action.setStatusTip('Exit application')
        self.exit_action.setShortcut('Ctrl+Q')
        self.exit_action.triggered.connect(self.do_quit)

        self.connect_action = QAction(QIcon(self.icon_dir + 'Connect.png'), 'Connect', self)
        self.connect_action.setStatusTip('Connect to camera')
        self.connect_action.triggered.connect(self.do_connect)

        self.reset_action = QAction(QIcon(self.icon_dir + 'Eject.png'), 'Reset', self)
        self.reset_action.setStatusTip('Reset camera and disconnect')
        self.reset_action.triggered.connect(self.do_disconnect)

        self.flash_action = QAction(QIcon(self.icon_dir + 'Lightning.png'), 'Flash', self)
        self.flash_action.setStatusTip('Flash new firmware')
        self.flash_action.triggered.connect(self.do_flash)

        self.run_action = QAction(QIcon(self.icon_dir + 'Run.png'), 'Run', self)
        self.run_action.setStatusTip('Run script')
        self.run_action.triggered.connect(self.do_run)

        self.stop_action = QAction(QIcon(self.icon_dir + 'Stop.png'), 'Stop', self)
        self.stop_action.setStatusTip('Stop script')
        self.stop_action.triggered.connect(self.do_stop)

        self.new_action = QAction(QIcon(self.icon_dir + 'NewDocument.png'), 'New', self)
        self.new_action.setStatusTip('New script')
        self.new_action.triggered.connect(self.do_new)

        self.open_action = QAction(QIcon(self.icon_dir + 'Open.png'), 'Open...', self)
        self.open_action.setStatusTip('Open script')
        self.open_action.setShortcut('Ctrl+O')
        self.open_action.triggered.connect(self.do_open)

        self.save_action = QAction(QIcon(self.icon_dir + 'Save.png'), 'Save', self)
        self.save_action.setStatusTip('Save script')
        self.save_action.setShortcut('Ctrl+S')
        self.save_action.triggered.connect(self.do_save)

        self.save_as_action = QAction(QIcon(self.icon_dir + 'SaveAs.png'), 'Save As...', self)
        self.save_as_action.setStatusTip('Save script as new file')
        self.save_as_action.triggered.connect(self.do_save_as)

        self.zoom_in_action = QAction(QIcon(self.icon_dir + 'ZoomIn.png'), 'Zoom In', self)
        self.zoom_in_action.setStatusTip('Make frame buffer preview bigger')
        self.zoom_in_action.triggered.connect(self.do_zoom_in)

        self.zoom_out_action = QAction(QIcon(self.icon_dir + 'ZoomOut.png'), 'Zoom Out', self)
        self.zoom_out_action.setStatusTip('Make frame buffer preview smaller')
        self.zoom_out_action.triggered.connect(self.do_zoom_out)

        self.zoom_reset_action = QAction(QIcon(self.icon_dir + 'ZoomReset.png'), 'Zoom Reset', self)
        self.zoom_reset_action.setStatusTip('Reset frame buffer preview size')
        self.zoom_reset_action.triggered.connect(self.do_zoom_reset)

        self.cut_action = QAction(QIcon(self.icon_dir+'Cut.png'), 'Cut', self)
        self.cut_action.triggered.connect(self.editor.cut)
        self.cut_action.setShortcut(QKeySequence.Cut)

        self.paste_action = QAction(QIcon(self.icon_dir+'Paste.png'), 'Paste', self)
        self.paste_action.triggered.connect(self.editor.paste)
        self.paste_action.setShortcut(QKeySequence.Paste)

        self.copy_action = QAction(QIcon(self.icon_dir+'Copy.png'), 'Copy', self)
        self.copy_action.triggered.connect(self.editor.copy)
        self.copy_action.setShortcut(QKeySequence.Copy)

        self.auto_flash_action = QAction('Auto-flash', self)
        self.auto_flash_action.setStatusTip('Automatically detect DFU mode and flash firmware')
        self.auto_flash_action.triggered.connect(self.do_auto_flash)
        self.auto_flash_action.setCheckable(True)
        self.auto_flash_action.setDisabled(True)

        self.auto_connect_action = QAction('Auto-connect', self)
        self.auto_connect_action.setStatusTip('Automatically connect to OpenMV when detected')
        self.auto_connect_action.triggered.connect(self.do_auto_connect)
        self.auto_connect_action.setCheckable(True)

        self.about_action = QAction(QIcon(self.icon_dir+'About.png'), 'About', self)
        self.about_action.triggered.connect(self.do_about)

        ############################################################################################################
        ## Toolbars

        self.toolbar1 = self.addToolBar('toolbar1')
        self.toolbar1.addAction(self.connect_action)
        self.toolbar1.addAction(self.reset_action)
        self.toolbar1.addAction(self.flash_action)
        self.toolbar1.addAction(self.run_action)
        self.toolbar1.addAction(self.stop_action)

        self.toolbar2 = self.addToolBar('toolbar2')
        self.toolbar2.addAction(self.new_action)
        self.toolbar2.addAction(self.open_action)
        self.toolbar2.addAction(self.save_action)

        self.toolbar3 = self.addToolBar('toolbar3')
        self.toolbar3.addAction(self.zoom_reset_action)
        self.toolbar3.addAction(self.zoom_out_action)
        self.toolbar3.addAction(self.zoom_in_action)

        ############################################################################################################
        ## Menus
        menu_bar = self.menuBar()

        file_menu = menu_bar.addMenu('&File')
        file_menu.addAction(self.new_action)
        file_menu.addAction(self.open_action)
        file_menu.addAction(self.save_action)
        file_menu.addAction(self.save_as_action)
        file_menu.addSeparator()
        self.example_menu = QMenu('Examples')
        self.recent_menu = QMenu('Recent')
        file_menu.addMenu(self.example_menu)
        file_menu.addMenu(self.recent_menu)
        file_menu.addSeparator()
        file_menu.addAction(self.exit_action)

        edit_menu = menu_bar.addMenu('&Edit')
        edit_menu.addAction(self.cut_action)
        edit_menu.addAction(self.copy_action)
        edit_menu.addAction(self.paste_action)

        openmv_menu = menu_bar.addMenu('&Tools')
        openmv_menu.addAction(self.connect_action)
        openmv_menu.addAction(self.reset_action)
        openmv_menu.addAction(self.flash_action)
        openmv_menu.addAction(self.auto_connect_action)
        openmv_menu.addAction(self.auto_flash_action)

        view_menu = menu_bar.addMenu('&View')
        view_menu.addAction(self.zoom_in_action)
        view_menu.addAction(self.zoom_out_action)
        view_menu.addAction(self.zoom_reset_action)

        help_menu = menu_bar.addMenu('&Help')
        help_menu.addAction(self.about_action)

        # Dynamically update dyanmic menus
        file_menu.aboutToShow.connect(self.update_example_menu)
        file_menu.aboutToShow.connect(self.update_recent_menu)

        # Connect dynamic menu items with correct handlers
        self.example_menu.triggered.connect(self.do_open_example)
        self.recent_menu.triggered.connect(self.do_open_recent)

        ############################################################################################################
        ## Main Window

        # Status bar
        self.statusBar()

        # Geometry
        self.setGeometry(50, 50, config.getint('main', 'width'), config.getint('main', 'height'))

        # Vertical box for framebuffer
        pvbox = QVBoxLayout()
        pvbox.addWidget(self.framebuffer)
        pvbox.addStretch(1)

        # Horizontal box for editor + framebuffer
        hbox = QHBoxLayout()
        hbox.addWidget(self.editor)
        hbox.addLayout(pvbox)

        self.terminal = SerialTerminal(self)
        self.terminal.setMinimumHeight(100)
        self.terminal.setMaximumHeight(200)
        self.terminal.show()
        self.serial = Serial()
        self.terminal.error.connect(self.do_disconnect)

        # Vertical box for hbox + terminal
        vbox = QVBoxLayout()
        vbox.addLayout(hbox)
        vbox.addWidget(self.terminal)
        w = QWidget()
        w.setLayout(vbox)
        self.setCentralWidget(w)

        # UI Statuses
        self.update_ui()

        self.show()

    def load_config(self, default):
        config = ConfigParser(default)
        config.add_section('main')
        try:
            config.read(self.config_file)
        except (IOError, OSError, ConfigParser.Error) as e:
            pass
            print("Failed to open config file: %s" % e)
        finally:
            return config

    def save_config(self):
        config = ConfigParser()
        config.add_section('main')
        config.set('main', 'serial_port', self.serial_port)
        config.set('main', 'auto_connect', self.auto_connect)
        config.set('main', 'auto_flash', self.auto_flash)
        config.set('main', 'height', self.height())
        config.set('main', 'width', self.width())
        config.set('main', 'scale', self.framebuffer.scale)
        config.set('main', 'recent', ','.join(self.recent))
        config.set('main', 'bin', self.flash_file)
        try:
            with open(self.config_file, 'w') as f:
                config.write(f)
        except (IOError, OSError) as e:
            print('Failed to save config file %s' % e)

    def update_ui(self):
        self.run_action.setEnabled(self.connected)
        self.stop_action.setEnabled(self.connected and self.running)
        self.connect_action.setEnabled(not self.connected)
        self.reset_action.setEnabled(self.connected)
        self.flash_action.setEnabled(self.connected)
        self.save_action.setEnabled(self.editor.document().isModified())
        self.zoom_in_action.setEnabled(self.connected)
        self.zoom_out_action.setEnabled(self.connected)
        self.zoom_reset_action.setEnabled(self.connected)
        self.auto_connect_action.setChecked(self.auto_connect)
        self.auto_flash_action.setChecked(self.auto_flash)
        if self.connected:
            con = '[connected]'
        else:
            con = '[disconnected]'
        if self.filename:
            fn = os.path.basename(self.filename)
        else:
            fn = 'untitled.py'
        self.setWindowTitle('OpenMV IDE (' + fn + ') - ' + con)

    def update_example_menu(self):
        if os.path.isdir(self.example_dir):
            self.example_menu.clear()
            files = sorted(os.listdir(self.example_dir))
            self.example_menu.setEnabled(len(files) > 0)
            for f in files:
                if f.endswith(".py"):
                    action = QAction(f, self)
                    self.example_menu.addAction(action)

    def update_recent_menu(self):
        self.recent_menu.clear()
        self.recent_menu.setEnabled(len(self.recent) > 0)
        for f in self.recent:
            self.recent_menu.addAction(QAction(f, self))

    def do_auto_connect(self):
        self.auto_connect = not self.auto_connect
        self.connector.set_auto_connect(self.auto_connect)
        self.update_ui()

    def do_connect(self):
        if not self.connected:
            self.connected = True
            try:
                # init OpenMV
                openmv.init()
                sleep(0.2)
                # interrupt any running code
                openmv.stop_script()
                sleep(0.2)
                # first, check to see if self.serial_port is in the list of enumerated ports
                # then try to open it. If that fails, or if the port isn't in the enumerated
                # list, then prompt the user for a port
                ports = []
                for p in list_ports.comports():
                    name = p[0]
                    try:
                        ser = Serial(name, 115200, timeout=1)
                        ser.close()
                        ports.append(p)
                    except (IOError, OSError):
                        pass
                print(ports)
                self.serial = Serial(self.serial_port, 115200, timeout=1)
                self.terminal.start(self.serial)
            except IOError as e:
                print('error connecting OpenMV Cam: %s' % e)
                self.connected = False
            else:
                self.update_ui()
                self.statusBar().showMessage('OpenMV Cam connected.')
                self.framebuffer.start_updater()

    def do_disconnect(self):
        if self.connected:
            self.connected = False
            self.update_ui()
            self.framebuffer.stop_updater()

            openmv.stop_script()
            sleep(0.2)
            # release OpenMV
            openmv.release()
            sleep(0.2)
            openmv.reset()
            sleep(0.2)

            self.connector.start()
            self.statusBar().showMessage('Camera disconnected.')

            try:
                if self.serial and self.serial.isOpen():
                    print('Disconnecting terminal')
                    self.serial.close()
                    self.terminal.reset()
            except IOError as e:
                print('error disconnecting OpenMV Serial: %s' % e)


    def do_auto_flash(self):
        self.auto_flash = not self.auto_flash
        self.update_ui()

    def do_flash(self):
        self.update_ui()

        if self.connected:
            dialog = QDialog(self)
            filename = QLineEdit()
            filename = QLineEdit()
            chooser = QFileDialog()
            filename.setText(self.flash_file)
            chooser.setDirectory(self.flash_dir)
            browse = QPushButton('&...')
            browse.pressed.connect(chooser.exec_)
            chooser.fileSelected.connect(filename.setText)

            hlayout1 = QHBoxLayout()
            hlayout1.addWidget(filename, stretch=1)
            hlayout1.addWidget(browse)

            ok_button = QPushButton('&Ok')
            cancel_button = QPushButton('&Cancel')

            hlayout2 = QHBoxLayout()
            hlayout2.addWidget(ok_button)
            hlayout2.addWidget(cancel_button)

            vlayout = QVBoxLayout()
            vlayout.addLayout(hlayout1)
            vlayout.addLayout(hlayout2)

            dialog.setLayout(vlayout)
            ok_button.pressed.connect(dialog.accept)
            cancel_button.pressed.connect(dialog.reject)

            dialog.exec_()
            dialog.hide()

            if dialog.result() == QDialog.Accepted:
                print('Accepted')

                file = filename.text()
                try:
                    with open(file, 'r') as f:
                        buf = f.read()
                except (IOError, OSError) as e:
                    QErrorMessage(self).showMessage('Error opening binary file:\n%s' % e)
                    print('Error opening binary file: %s' % e)
                else:
                    self.flash_file = file
                    self.flash_update(buf)

            else:
                print('Rejected')

    def flash_update(self, buf):
        flash_offsets = [0x08000000, 0x08004000, 0x08008000, 0x0800C000,
                         0x08010000, 0x08020000, 0x08040000, 0x08060000,
                         0x08080000, 0x080A0000, 0x080C0000, 0x080E0000]

        # Erasing
        total = len(flash_offsets)

        progress = QProgressDialog(self)
        progress.setRange(0, total)
        progress.setValue(0)
        progress.setModal(True)
        progress.show()
        progress.setAutoReset(False)
        progress.setLabelText('Initializing')

        # call dfu-util
        openmv.enter_dfu()
        sleep(1.0)

        # Initialize
        pydfu.init()

        progress.setLabelText('Erasing')
        progress.setValue(0)

        pg = 0
        for offset in flash_offsets:
            progress.setValue(pg)
            pydfu.page_erase(flash_offsets[pg])
            pg += 1

        offset = 0
        size = len(buf)
        progress.setRange(0, size)
        progress.setLabelText('Downloading')

        while offset < size:
            progress.setValue(offset)
            pg_size = min(64, size - offset)
            page = buf[offset:offset + pg_size]
            pydfu.write_page(page, offset)
            offset += pg_size

        progress.hide()
        pydfu.exit_dfu()

    def do_run(self):
        buf = str(self.editor.toPlainText())
        # interrupt any running code
        openmv.stop_script()
        sleep(0.1)
        # exec script
        openmv.exec_script(buf)
        self.running = True
        self.update_ui()

    def do_stop(self):
        openmv.stop_script()
        self.running = False
        self.update_ui()

    def check_modified(self):
        result = True
        if self.editor.document().isModified():
            msg = QMessageBox(self)
            msg.setText('The document has been modified.')
            msg.setIcon(QMessageBox.Warning)
            msg.setInformativeText('Do you want to save your changes?')
            msg.setStandardButtons(QMessageBox.Save | QMessageBox.Discard | QMessageBox.Cancel)
            msg.setDefaultButton(QMessageBox.Save)
            msg.exec_()
            ret = msg.result()
            if ret == QMessageBox.Save:
                self.do_save()
                result = True
            elif ret == QMessageBox.Discard:
                result = True
            elif ret == QMessageBox.Cancel:
                result = False
            else:
                print('%s' % ret)
        return result

    def do_new(self):
        if self.check_modified():
            self.editor.setPlainText('')
            self.filename = ''
            self.update_ui()

    def do_open(self):
        if self.check_modified():
            if os.path.exists(self.script_dir):
                my_dir = self.script_dir
            else:
                my_dir = self.example_dir

            filename = QFileDialog.getOpenFileName(parent=self,
                                                   caption=self.tr('Open Micro Python Script'),
                                                   directory=my_dir,
                                                   filter=self.tr("Python scripts (*.py)"))
            self.open_file(filename)

    def open_file(self, filename):
        if filename:
            try:
                infile = open(filename, 'r')
            except (IOError, OSError) as e:
                QErrorMessage(self).showMessage('Error opening file:\n%s' % e)
            else:
                self.editor.setPlainText(infile.read())
                # store new filename
                self.filename = str(filename)
                self.update_ui()
                self.recent.add(self.filename)

    def do_save_as(self):
        self.do_save(True)

    def do_save(self, save_as=False):
        if save_as:
            filename = ''
        else:
            filename = self.filename

        ## TODO: Address file-exists-replace? scenario

        # filename will be empty if we haven't saved the document yet
        if not filename:
            filename = QFileDialog.getSaveFileName(parent=self,
                                                   caption=self.tr('Save Micro Python Script'),
                                                   directory=self.script_dir,
                                                   filter=self.tr("Python scripts (*.py)"))
        if filename:
            try:
                outfile = open(filename, 'w')
                outfile.write(self.editor.toPlainText())
                # store new filename
                self.filename = str(filename)
                self.editor.document().setModified(False)
                self.update_ui()
            except (IOError, OSError) as e:
                QErrorMessage(self).showMessage('Error saving file:\n%s' % e)

    def do_open_example(self, action):
        assert isinstance(action, QAction)
        if self.check_modified():
            self.open_file(self.example_dir + action.text())

    def do_open_recent(self, action):
        assert isinstance(action, QAction)
        if self.check_modified():
            self.open_file(action.text())

    def do_quit(self):
        if self.check_modified():
            if self.connected:
                self.do_disconnect()
            self.save_config()
            self.framebuffer.quit()
            QApplication.quit()

    def do_zoom_in(self):
        self.framebuffer.increase_scale(0.5)

    def do_zoom_out(self):
        self.framebuffer.decrease_scale(0.5)

    def do_zoom_reset(self):
        self.framebuffer.reset_scale()

    def interrupt_handler(self, signum, frame):
        print('CTRL-C caught')

    def do_about(self):
        msg = QMessageBox(self)
        msg.setText('OpenMV IDE (PyQt)')
        msg.setIcon(QMessageBox.Question)
        msg.setInformativeText('Michael Shimniok')
        msg.setStandardButtons(QMessageBox.Ok)
        msg.setDefaultButton(QMessageBox.Ok)
        msg.exec_()

    def closeEvent(self, event):
        result = QMessageBox.question(self, "Confirm Exit...", "Are you sure you want to exit ?", QMessageBox.Yes, QMessageBox.No)
        event.ignore()

        if result == QMessageBox.Yes:
            self.do_quit()