toolchaineditor.py 55.3 KB
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# vim: set fileencoding=utf-8 :
###############################################################################
#                                                                             #
# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/           #
# Contact: beat.support@idiap.ch                                              #
#                                                                             #
# This file is part of the beat.editor module of the BEAT platform.           #
#                                                                             #
# Commercial License Usage                                                    #
# Licensees holding valid commercial BEAT licenses may use this file in       #
# accordance with the terms contained in a written agreement between you      #
# and Idiap. For further information contact tto@idiap.ch                     #
#                                                                             #
# Alternatively, this file may be used under the terms of the GNU Affero      #
# Public License version 3 as published by the Free Software and appearing    #
# in the file LICENSE.AGPL included in the packaging of this file.            #
# The BEAT platform is distributed in the hope that it will be useful, but    #
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY  #
# or FITNESS FOR A PARTICULAR PURPOSE.                                        #
#                                                                             #
# You should have received a copy of the GNU Affero Public License along      #
# with the BEAT platform. If not, see http://www.gnu.org/licenses/.           #
#                                                                             #
###############################################################################

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import simplejson as json

from enum import Enum
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from functools import partial
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from PyQt5.QtCore import Qt
from PyQt5.QtCore import QRect
from PyQt5.QtCore import QRectF
from PyQt5.QtCore import QPointF
from PyQt5.QtCore import pyqtSignal
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from PyQt5.QtCore import pyqtSlot
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from PyQt5.QtGui import QColor
from PyQt5.QtGui import QBrush
from PyQt5.QtGui import QPen
from PyQt5.QtGui import QFont
from PyQt5.QtGui import QFontMetrics
from PyQt5.QtGui import QPainterPath
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from PyQt5.QtGui import QTransform
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from PyQt5.QtGui import QIcon
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from PyQt5.QtWidgets import QHBoxLayout
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from PyQt5.QtWidgets import QFormLayout
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from PyQt5.QtWidgets import QWidget
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from PyQt5.QtWidgets import QGraphicsView
from PyQt5.QtWidgets import QGraphicsItem
from PyQt5.QtWidgets import QGraphicsPathItem
from PyQt5.QtWidgets import QGraphicsObject
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from PyQt5.QtWidgets import QToolBar
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from PyQt5.QtWidgets import QLabel
from PyQt5.QtWidgets import QDialog
from PyQt5.QtWidgets import QDialogButtonBox
from PyQt5.QtWidgets import QComboBox
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtWidgets import QMenu
from PyQt5.QtWidgets import QLineEdit
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from PyQt5.QtWidgets import QMessageBox
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from PyQt5.QtWidgets import QColorDialog
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from beat.backend.python.algorithm import Algorithm

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from ..backend.asset import Asset
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from ..backend.asset import AssetType
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from ..backend.assetmodel import AssetModel
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from ..decorators import frozen
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from .editor import AbstractAssetEditor
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from .drawing_space import DrawingSpace
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from ..backend.resourcemodels import AlgorithmResourceModel
from ..backend.resourcemodels import DatasetResourceModel
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class BasePin(QGraphicsObject):
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    """Base class for pin graphics"""

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    dataChanged = pyqtSignal()

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    def __init__(self, parent, pin, block, pin_brush, pin_pen):

        super().__init__(parent=parent)

        # Highlight
        self.setAcceptHoverEvents(True)

        # Storage
        self.pin_type = None
        self.pin = pin
        self.block = block
        self.brush = pin_brush
        self.pen = pin_pen
        self.block_object = parent

    def shape(self):
        """Define the circle shape of a Pin object"""

        path = QPainterPath()
        path.addRect(self.boundingRect())
        return path

    def paint(self, painter, option, widget):
        """Paint the Pin"""

        painter.setBrush(self.brush)
        painter.setPen(self.pen)

        painter.drawEllipse(self.boundingRect())

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    def mousePressEvent(self, event):
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        """Painting connection initiated"""
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        self.new_connection = Connection(self.block_object.connection_style)
        self.block_object.scene().addItem(self.new_connection)

    def mouseMoveEvent(self, event):
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        """Painting connection in progress"""
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        # Only one single connection allowed from input pin
        if isinstance(self, InputPin):
            # Check if connection exist and remove if it does
            for connection in self.block_object.toolchain.connections:
                if (
                    connection.end_block == self.block_object
                    and connection.end_pin == self
                ):
                    self.block_object.toolchain.connections.remove(connection)
                    self.block_object.scene().removeItem(connection)
                    self.dataChanged.emit()

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        mouse_position = self.mapToScene(event.pos())
        self.new_connection.set_new_connection_pins_coordinates(self, mouse_position)

    def mouseReleaseEvent(self, event):
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        """Painting connection ended - validation required"""
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        self.block_object.scene().removeItem(self.new_connection)
        target = self.block_object.scene().itemAt(
            event.scenePos().toPoint(), QTransform()
        )

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        if isinstance(target, BasePin):
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            if isinstance(self, OutputPin):
                start = self
                end = target
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            else:
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                start = target
                end = self

            if Connection(self.block_object.connection_style).check_validity(
                start, end
            ):

                # Find the corresponding channel
                connection_settings = {}
                if start.block_object.type == BlockType.DATASETS.name:
                    connection_settings["channel"] = start.block_object.name
                else:
                    connection_settings[
                        "channel"
                    ] = start.block_object.synchronized_channel

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                if end.block_object.synchronized_channel is None:
                    end.block_object.synchronized_channel = connection_settings[
                        "channel"
                    ]
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                # Create the connection
                connection_settings["from"] = start.block + "." + start.pin
                connection_settings["to"] = end.block + "." + end.pin

                channel_colors = self.block_object.toolchain.json_object[
                    "representation"
                ]["channel_colors"]

                connection = Connection(self.block_object.connection_style)
                connection.load(
                    self.block_object.toolchain, connection_settings, channel_colors
                )
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                self.dataChanged.emit()

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                self.block_object.toolchain.connections.append(connection)
                self.block_object.toolchain.scene.addItem(connection)
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    def get_center_point(self):
        """Get the center coordinates of the Pin(x,y)"""

        rect = self.boundingRect()
        pin_center_point = QPointF(
            rect.x() + rect.width() / 2.0, rect.y() + rect.height() / 2.0
        )

        return self.mapToScene(pin_center_point)


class InputPin(BasePin):
    def __init__(self, parent, pin, block, pin_brush, pin_pen):

        super().__init__(parent, pin, block, pin_brush, pin_pen)

    def boundingRect(self):
        """Bounding rect around pin object"""

        height = self.block_object.height / 2.0
        width = height

        x = -(width / 2.0)
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        if self.block_object.type == BlockType.LOOPS.name:
            if self.pin in self.block_object.processor_inputs:
                _idx = self.block_object.processor_inputs.index(self.pin)
            elif self.pin in self.block_object.evaluator_inputs:
                _idx = self.block_object.evaluator_inputs.index(self.pin) + len(
                    self.block_object.processor_inputs
                )

            y = self.block_object.height + _idx * self.block_object.pin_height
        else:
            y = (
                self.block_object.height
                + self.block_object.inputs.index(self.pin)
                * self.block_object.pin_height
            )
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        rect = QRectF(QRect(x, y, width, height))
        return rect


class OutputPin(BasePin):
    def __init__(self, parent, pin, block, pin_brush, pin_pen):

        super().__init__(parent, pin, block, pin_brush, pin_pen)

    def boundingRect(self):
        """ bounding rect width by height.
        """

        height = self.block_object.height / 2.0
        width = height

        x = self.block_object.custom_width - (width / 2.0)
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        if self.block_object.type == BlockType.LOOPS.name:
            if self.pin in self.block_object.processor_outputs:
                _idx = self.block_object.processor_outputs.index(self.pin)
            elif self.pin in self.block_object.evaluator_outputs:
                _idx = self.block_object.evaluator_outputs.index(self.pin) + len(
                    self.block_object.processor_outputs
                )

            y = self.block_object.height + _idx * self.block_object.pin_height
        else:
            y = (
                self.block_object.height
                + self.block_object.outputs.index(self.pin)
                * self.block_object.pin_height
            )
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        rect = QRectF(QRect(x, y, width, height))
        return rect


class Connection(QGraphicsPathItem):
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    def __init__(self, style):
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        super().__init__()

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        self.start_block_name = None
        self.start_pin_name = None
        self.start_pin_center_point = None
        self.end_block_name = None
        self.end_pin_name = None
        self.end_pin_center_point = None
        self.channel = None
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        self.connection_color = []
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        self.set_style(style)

    def set_style(self, config):

        # Highlight
        self.setAcceptHoverEvents(True)

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        # Geometry and color settings
        self.connection_color = config["color"]
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        self.connection_pen = QPen()
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        self.connection_pen.setColor(QColor(*self.connection_color))
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        self.connection_pen.setWidth(config["width"])
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    def drawCubicBezierCurve(self):

        self.setPen(self.connection_pen)

        path = QPainterPath()
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        middle_point_x = (
            self.end_pin_center_point.x() - self.start_pin_center_point.x()
        ) / 2.0
        middle_point_y = (
            self.end_pin_center_point.y() - self.start_pin_center_point.y()
        ) / 2.0
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        second_middle_point_y = (
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            self.end_pin_center_point.y() - self.start_pin_center_point.y()
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        ) / 4.0
        control_point = QPointF(middle_point_x, middle_point_y)
        second_control_point = QPointF(middle_point_x, second_middle_point_y)
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        path.moveTo(self.start_pin_center_point)
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        path.cubicTo(
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            self.start_pin_center_point + control_point,
            self.end_pin_center_point - second_control_point,
            self.end_pin_center_point,
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        )

        self.setPath(path)

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    def set_moved_block_pins_coordinates(self):
        self.start_pin_center_point = self.start_pin.get_center_point()
        self.end_pin_center_point = self.end_pin.get_center_point()

        self.drawCubicBezierCurve()

    def set_new_connection_pins_coordinates(self, selected_pin, mouse_position):

        if isinstance(selected_pin, OutputPin):
            self.start_block_name = selected_pin.block
            self.start_pin_name = selected_pin.pin
            self.start_pin = selected_pin
            self.start_pin_center_point = self.start_pin.get_center_point()
            self.end_pin_center_point = mouse_position
        if isinstance(selected_pin, InputPin):
            self.end_block_name = selected_pin.block
            self.end_pin_name = selected_pin.pin
            self.end_pin = selected_pin
            self.end_pin_center_point = self.end_pin.get_center_point()
            self.start_pin_center_point = mouse_position

        self.drawCubicBezierCurve()

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    def check_validity(self, start, end):

        # remove input-input and output-output connection
        if type(start) == type(end):
            return False

        # remove connection to same block object
        if start.block_object == end.block_object:
            return False

        # check if end block pin is free
        toolchain = end.block_object.toolchain
        for connection in toolchain.connections:
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            if connection.end_block == end.block_object and connection.end_pin == end:
                return False
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        return True

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    def load(self, toolchain, connection_details, channel_colors):

        self.start_block_name = connection_details["from"].split(".")[0]
        self.start_pin_name = connection_details["from"].split(".")[1]
        self.end_block_name = connection_details["to"].split(".")[0]
        self.end_pin_name = connection_details["to"].split(".")[1]
        self.channel = connection_details["channel"]

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        if self.channel is None or self.channel not in channel_colors:
            warning = QMessageBox()
            warning.setIcon(QMessageBox.Warning)
            warning.setWindowTitle(toolchain.tr("Connection creation"))
            warning.setInformativeText(
                toolchain.tr("No dataset synchronization channel connection found!")
            )
            warning.setStandardButtons(QMessageBox.Ok)
            warning.exec_()

        else:
            hexadecimal = channel_colors[self.channel].lstrip("#")
            hlen = len(hexadecimal)
            self.connection_color = list(
                int(hexadecimal[i : i + hlen // 3], 16)
                for i in range(0, hlen, hlen // 3)
            )
            self.connection_color.append(255)
            self.connection_pen.setColor(QColor(*self.connection_color))
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        self.blocks = toolchain.blocks

        for block in self.blocks:
            if block.name == self.start_block_name:
                self.start_block = block
            elif block.name == self.end_block_name:
                self.end_block = block

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        if self.start_block.type == BlockType.LOOPS.name:
            if self.start_pin_name in self.start_block.pins["outputs"]["processor"]:
                self.start_pin = self.start_block.pins["outputs"]["processor"][
                    self.start_pin_name
                ]
            else:
                self.start_pin = self.start_block.pins["outputs"]["evaluator"][
                    self.start_pin_name
                ]
        else:
            self.start_pin = self.start_block.pins["outputs"][self.start_pin_name]

        if self.end_block.type == BlockType.LOOPS.name:
            if self.end_pin_name in self.end_block.pins["inputs"]["processor"]:
                self.end_pin = self.end_block.pins["inputs"]["processor"][
                    self.end_pin_name
                ]
            else:
                self.end_pin = self.end_block.pins["inputs"]["evaluator"][
                    self.end_pin_name
                ]
        else:
            self.end_pin = self.end_block.pins["inputs"][self.end_pin_name]
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        self.start_pin_center_point = self.start_pin.get_center_point()
        self.end_pin_center_point = self.end_pin.get_center_point()

        self.drawCubicBezierCurve()

        self.start_block.blockMoved.connect(self.set_moved_block_pins_coordinates)
        self.end_block.blockMoved.connect(self.set_moved_block_pins_coordinates)

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class BlockEditionDialog(QDialog):
    """Dialog to edit a block"""

    def __init__(self, block, parent=None):
        """Constructor

        :param block: current block
        :param parent QWidget: parent widget
        """

        super().__init__(parent)

        toolchain = block.toolchain
        self.setWindowTitle(self.tr("Block Edition"))
        self.name_lineedit = QLineEdit(block.name)
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        self.color = "#000000"
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        self.channel_combobox = QComboBox()
        no_channel_label = QLabel(self.tr("No input connections yet!"))
        no_dataset_channel_label = QLabel(self.tr("No synchronization for datasets"))

        layout = QFormLayout(self)
        layout.addRow(self.tr("Name:"), self.name_lineedit)

        channels = []
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        if block.type == BlockType.DATASETS.name:
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            channel_color_button = QPushButton("Channel color", self)
            channel_color_button.setToolTip("Opens color dialog")
            channel_color_button.clicked.connect(self.on_color_click)
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            layout.addRow(self.tr("Channel:"), no_dataset_channel_label)
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            layout.addRow(self.tr("Channel color:"), channel_color_button)
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        elif block.synchronized_channel is None:
            layout.addRow(self.tr("Channel:"), no_channel_label)
        else:
            for connection in toolchain.connections:
                if connection.end_block == block and connection.channel not in channels:
                    channels.append(connection.channel)
            self.channel_combobox.addItems(channels)
            # set current channel if exists
            index = self.channel_combobox.findText(
                str(block.synchronized_channel), Qt.MatchFixedString
            )
            if index >= 0:
                self.channel_combobox.setCurrentIndex(index)

            layout.addRow(self.tr("Channel:"), self.channel_combobox)

        # OK and Cancel buttons
        self.buttons = QDialogButtonBox(
            QDialogButtonBox.Ok | QDialogButtonBox.Cancel, Qt.Horizontal, self
        )
        # layout.addWidget(self.buttons)
        layout.addRow(self.buttons)

        # Signals/Slots connection
        self.buttons.accepted.connect(self.accept)
        self.buttons.rejected.connect(self.reject)

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    @pyqtSlot()
    def on_color_click(self):
        self.colorDialog()

    def colorDialog(self):
        color = QColorDialog.getColor()

        if color.isValid():
            self.color = color.name().capitalize()

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    def value(self):
        """Returns the value selected"""

        return {
            "name": self.name_lineedit.text(),
            "channel": self.channel_combobox.currentText(),
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            "color": self.color,
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        }

    @staticmethod
    def getNewBlockSettings(block, parent=None):
        """Static method to create the dialog and return qdialog accepted/spinbox value

        :param block: current block
        :param parent QWidget: parent widget
        """

        dialog = BlockEditionDialog(block, parent)
        result = dialog.exec_()
        value = None

        if result == QDialog.Accepted:
            value = dialog.value()

        return (value, result)


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class BlockType(Enum):
    """All possible block types"""

    BLOCKS = "blocks"
    ANALYZERS = "analyzers"
    DATASETS = "datasets"
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    LOOPS = "loops"
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    @classmethod
    def from_name(cls, name):
        try:
            return cls[name]
        except ValueError:
            raise ValueError("{} is not a valid block type".format(name))

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class Block(QGraphicsObject):
    """Block item"""

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    dataChanged = pyqtSignal()
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    blockMoved = pyqtSignal()

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    def __init__(self, block_type, style, connection_style):
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        super().__init__()

        # Block information
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        self.type = block_type
        self.name = ""
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        if self.type == BlockType.LOOPS.name:
            self.processor_inputs = []
            self.processor_outputs = []
            self.evaluator_inputs = []
            self.evaluator_outputs = []
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        else:
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            if self.type == BlockType.DATASETS.name:
                self.inputs = None
            else:
                self.inputs = []
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            if self.type == BlockType.ANALYZERS.name:
                self.outputs = None
            else:
                self.outputs = []
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        self.synchronized_channel = None
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        self.style = style
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        self.connection_style = connection_style
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        self.position = QPointF(0, 0)
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        self.pins = dict()
        self.pins["inputs"] = dict()
        self.pins["outputs"] = dict()

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        if self.type == BlockType.LOOPS.name:
            self.pins["inputs"]["processor"] = dict()
            self.pins["outputs"]["processor"] = dict()
            self.pins["inputs"]["evaluator"] = dict()
            self.pins["outputs"]["evaluator"] = dict()

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        self.set_style(style)
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    def load(self, toolchain, block_details):
        self.toolchain = toolchain
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        if "name" in block_details:
            self.name = block_details["name"]
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        if self.type == BlockType.LOOPS.name:
            self.processor_inputs = block_details["processor_inputs"]
            self.processor_outputs = block_details["processor_outputs"]
            self.evaluator_inputs = block_details["evaluator_inputs"]
            self.evaluator_outputs = block_details["evaluator_outputs"]
        else:
            if (
                self.type != BlockType.DATASETS.name
                and self.type != BlockType.LOOPS.name
            ):
                self.inputs = block_details["inputs"]
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            if (
                self.type != BlockType.ANALYZERS.name
                and self.type != BlockType.LOOPS.name
            ):
                self.outputs = block_details["outputs"]
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        if "synchronized_channel" in block_details:
            self.synchronized_channel = block_details["synchronized_channel"]

        self.set_style(self.style)
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        self.create_pins()

    def create_pins(self):

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        if self.type == BlockType.LOOPS.name:
            for pin_name in self.processor_inputs:
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                input_pin = InputPin(
                    self, pin_name, self.name, self.pin_brush, self.pin_pen
                )
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                self.pins["inputs"]["processor"][pin_name] = input_pin
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                input_pin.dataChanged.connect(self.dataChanged)

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            for pin_name in self.processor_outputs:
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                output_pin = OutputPin(
                    self, pin_name, self.name, self.pin_brush, self.pin_pen
                )
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                self.pins["outputs"]["processor"][pin_name] = output_pin
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                output_pin.dataChanged.connect(self.dataChanged)

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            for pin_name in self.evaluator_inputs:
                input_pin = InputPin(
                    self, pin_name, self.name, self.pin_brush, self.pin_pen
                )
                self.pins["inputs"]["evaluator"][pin_name] = input_pin

                input_pin.dataChanged.connect(self.dataChanged)

            for pin_name in self.evaluator_outputs:
                output_pin = OutputPin(
                    self, pin_name, self.name, self.pin_brush, self.pin_pen
                )
                self.pins["outputs"]["evaluator"][pin_name] = output_pin

                output_pin.dataChanged.connect(self.dataChanged)
        else:
            if self.inputs is not None:
                for pin_name in self.inputs:
                    input_pin = InputPin(
                        self, pin_name, self.name, self.pin_brush, self.pin_pen
                    )
                    self.pins["inputs"][pin_name] = input_pin

                    input_pin.dataChanged.connect(self.dataChanged)

            if self.outputs is not None:
                for pin_name in self.outputs:
                    output_pin = OutputPin(
                        self, pin_name, self.name, self.pin_brush, self.pin_pen
                    )
                    self.pins["outputs"][pin_name] = output_pin

                    output_pin.dataChanged.connect(self.dataChanged)

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    def set_style(self, config):

        self.setAcceptHoverEvents(True)
        self.setFlag(QGraphicsItem.ItemIsSelectable, True)
        self.setFlag(QGraphicsItem.ItemIsMovable)

        # Geometry settings
        self.width = config["width"]
        self.height = config["height"]
        self.border = config["border"]
        self.radius = config["radius"]
        self.pin_height = config["pin_height"]

        self.text_font = QFont(config["font"], config["font_size"], QFont.Bold)
        self.pin_font = QFont(config["pin_font"], config["pin_font_size"], QFont.Normal)

        metrics = QFontMetrics(self.text_font)
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        text_width = metrics.boundingRect(self.name).width() + 24
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        if self.type == BlockType.LOOPS.name:
            if len(self.processor_inputs) > 0:
                self.max_processor_inputs_width = (
                    metrics.boundingRect(max(self.processor_inputs, key=len)).width()
                    + 24
                )
            else:
                self.max_processor_inputs_width = 24

            if len(self.evaluator_inputs) > 0:
                self.max_evaluator_inputs_width = (
                    metrics.boundingRect(max(self.evaluator_inputs, key=len)).width()
                    + 24
                )
            else:
                self.max_evaluator_inputs_width = 24

            self.max_inputs_width = max(
                self.max_processor_inputs_width, self.max_evaluator_inputs_width
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            )

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            if len(self.processor_outputs) > 0:
                self.max_processor_outputs_width = (
                    metrics.boundingRect(max(self.processor_outputs, key=len)).width()
                    + 24
                )
            else:
                self.max_processor_outputs_width = 24

            if len(self.evaluator_outputs) > 0:
                self.max_evaluator_outputs_width = (
                    metrics.boundingRect(max(self.evaluator_outputs, key=len)).width()
                    + 24
                )
            else:
                self.max_evaluator_outputs_width = 24

            self.max_outputs_width = max(
                self.max_processor_outputs_width, self.max_evaluator_outputs_width
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            )
        else:
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            if self.inputs is not None and len(self.inputs) > 0:
                self.max_inputs_width = (
                    metrics.boundingRect(max(self.inputs, key=len)).width() + 24
                )
            else:
                self.max_inputs_width = 24

            if self.outputs is not None and len(self.outputs) > 0:
                self.max_outputs_width = (
                    metrics.boundingRect(max(self.outputs, key=len)).width() + 24
                )
            else:
                self.max_outputs_width = 24
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        self.custom_width = max(
            self.max_outputs_width + self.max_inputs_width, text_width
        )

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        self.custom_height = self.height

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        self.center = QPointF()
        self.center.setX(self.custom_width / 2.0)
        self.center.setY(self.height / 2.0)

        self.background_brush = QBrush()
        self.background_brush.setStyle(Qt.SolidPattern)
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        self.background_color_datasets = QColor(*config["background_color_datasets"])
        self.background_color_analyzers = QColor(*config["background_color_analyzers"])
        self.background_color_blocks = QColor(*config["background_color_blocks"])
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        self.background_color_loops = QColor(*config["background_color_loops"])
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        self.background_brush.setColor(self.background_color_blocks)
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        self.background_pen = QPen()
        self.background_pen.setStyle(Qt.SolidLine)
        self.background_pen.setWidth(0)
        self.background_pen.setColor(QColor(*config["background_color"]))

        self.border_pen = QPen()
        self.border_pen.setStyle(Qt.SolidLine)
        self.border_pen.setWidth(self.border)
        self.border_pen.setColor(QColor(*config["border_color"]))

        self.selection_border_pen = QPen()
        self.selection_border_pen.setStyle(Qt.SolidLine)
        self.selection_border_pen.setWidth(self.border)
        self.selection_border_pen.setColor(QColor(*config["selection_border_color"]))

        self.text_pen = QPen()
        self.text_pen.setStyle(Qt.SolidLine)
        self.text_pen.setColor(QColor(*config["text_color"]))

        self._pin_brush = QBrush()
        self._pin_brush.setStyle(Qt.SolidPattern)

        self.pin_pen = QPen()
        self.pin_pen.setStyle(Qt.SolidLine)

        self.pin_brush = QBrush()
        self.pin_brush.setStyle(Qt.SolidPattern)
        self.pin_brush.setColor(QColor(*config["pin_color"]))

    def boundingRect(self):
        """Bounding rect of the block object width by height"""
        metrics = QFontMetrics(self.text_font)
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        text_height = metrics.boundingRect(self.name).height() + 24
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        if self.type == BlockType.LOOPS.name:
            max_pin_height = max(
                len(self.processor_inputs) + len(self.evaluator_inputs),
                len(self.processor_outputs) + len(self.evaluator_outputs),
            )
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        else:
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            if self.inputs is not None and self.outputs is not None:
                max_pin_height = max(len(self.inputs), len(self.outputs))
            elif self.inputs is not None and self.outputs is None:
                max_pin_height = len(self.inputs)
            elif self.inputs is None and self.outputs is not None:
                max_pin_height = len(self.outputs)
            else:
                max_pin_height = 0
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        if max_pin_height == 0:
            self.custom_width = 55
            self.height = 55

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        self.custom_height = (
            text_height + self.height + max_pin_height * self.pin_height
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        )
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        rect = QRect(0, -text_height, self.custom_width, self.custom_height)
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        rect = QRectF(rect)
        return rect

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    def draw_pins_name(self, painter, _type, data, offset):
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        """Paint pin with name"""
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        offset = offset * self.pin_height
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        for pin_name in data:
            # Pin rect
            painter.setBrush(self.background_brush)
            painter.setPen(self.background_pen)
            painter.setFont(self.pin_font)

            coord_x = self.border / 2
            alignement = Qt.AlignLeft

            max_width = self.max_inputs_width
            if _type == "output":
                coord_x = self.custom_width - self.max_outputs_width - self.border / 2
                max_width = self.max_outputs_width
                alignement = Qt.AlignRight

            rect = QRect(
                coord_x, self.height - self.radius + offset, max_width, self.pin_height
            )

            textRect = QRect(
                rect.left() + self.radius,
                rect.top() + self.radius,
                rect.width() - 2 * self.radius,
                rect.height(),
            )

            painter.setPen(self.pin_pen)
            painter.drawText(textRect, alignement, pin_name)

            offset += self.pin_height

    def mouseMoveEvent(self, event):
        """Update connections due to new block position"""

        super(Block, self).mouseMoveEvent(event)

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        self.position = self.scenePos()

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        self.blockMoved.emit()
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        self.dataChanged.emit()
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    def mouseDoubleClickEvent(self, event):
        """Update block information"""
        value = None
        ok = False
        block_updated = False

        value, ok = BlockEditionDialog.getNewBlockSettings(self)

        old_name = self.name
        old_channel = self.synchronized_channel

        if ok:
            if self.name != value["name"]:
                self.name = value["name"]
                block_updated = True
            if (
                self.synchronized_channel != value["channel"]
                and self.type != BlockType.DATASETS.name
            ):
                self.synchronized_channel = value["channel"]
                block_updated = True
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            if self.type == BlockType.DATASETS.name:
                self.toolchain.web_representation["channel_colors"][self.name] = value[
                    "color"
                ]
                block_updated = True
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        if block_updated:
            # Update blocks
            block_item = {}
            block_item["inputs"] = self.inputs
            block_item["outputs"] = self.outputs
            block_item["name"] = self.name
            block_item["synchronized_channel"] = self.synchronized_channel

            self.toolchain.blocks.remove(self)
            self.scene().removeItem(self)

            self.load(self.toolchain, block_item)
            self.dataChanged.connect(self.toolchain.dataChanged)
            self.toolchain.blocks.append(self)
            self.toolchain.scene.addItem(self)

            # if type is dataset: update sync channels everywhere
            if self.type == BlockType.DATASETS.name:
                for block in self.toolchain.blocks:
                    if (
                        block.type != BlockType.DATASETS.name
                        and block.synchronized_channel == old_name
                    ):
                        block.synchronized_channel = self.name

            # Update connections
            for connection in self.toolchain.connections:
                # Name update
                if connection.start_block_name == old_name:
                    connection.start_block_name = self.name
                if connection.end_block_name == old_name:
                    connection.end_block_name = self.name
                if connection.channel == old_name:
                    connection.channel = self.name

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                # color update
                self.toolchain.scene.removeItem(connection)

                # Find the corresponding channel
                connection_settings = {}
                connection_settings["channel"] = connection.channel
                # Create the connection
                connection_settings["from"] = (
                    connection.start_block_name + "." + connection.start_pin_name
                )
                connection_settings["to"] = (
                    connection.end_block_name + "." + connection.end_pin_name
                )

                channel_colors = self.toolchain.json_object.get(
                    "representation", {}
                ).get("channel_colors")
                connection.load(self.toolchain, connection_settings, channel_colors)

                self.toolchain.scene.addItem(connection)

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            # Complete toolchain channel update from current block
            if old_channel != self.synchronized_channel:
                self.toolchain.update_channel_path(
                    self, old_channel, self.synchronized_channel
                )

            # Update representation
            web_representation = self.toolchain.web_representation
            for key, value in web_representation.items():
                for sub_key, sub_value in web_representation[key].items():
                    if sub_key == old_name:
                        # blocks and channel_colors
                        new_sub_key = sub_key.replace(old_name, self.name)
                        web_representation[key][new_sub_key] = web_representation[
                            key
                        ].pop(sub_key)
                    elif "/" in sub_key:
                        # connections
                        new_sub_key = sub_key
                        left_part = sub_key.split("/")[0]
                        right_part = sub_key.split("/")[1]

                        if left_part.split(".")[0] == old_name:
                            new_sub_key = (
                                self.name
                                + "."
                                + left_part.split(".")[1]
                                + "/"
                                + right_part
                            )
                        if right_part.split(".")[0] == old_name:
                            new_sub_key = (
                                left_part
                                + "/"
                                + self.name
                                + "."
                                + right_part.split(".")[1]
                            )
                        if new_sub_key != sub_key:
                            web_representation[key][new_sub_key] = web_representation[
                                key
                            ].pop(sub_key)

            self.dataChanged.emit()

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    def paint(self, painter, option, widget):
        """Paint the block"""

        # Design tools
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        if self.type == BlockType.DATASETS.name:
            self.background_brush.setColor(self.background_color_datasets)
        elif self.type == BlockType.ANALYZERS.name:
            self.background_brush.setColor(self.background_color_analyzers)
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        elif self.type == BlockType.LOOPS.name:
            self.background_brush.setColor(self.background_color_loops)
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        painter.setBrush(self.background_brush)
        painter.setPen(self.border_pen)

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        if self.type == BlockType.LOOPS.name:
            max_pin_height = max(
                len(self.processor_inputs) + len(self.evaluator_inputs),
                len(self.processor_outputs) + len(self.evaluator_outputs),
            )
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        else:
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            if self.inputs is not None and self.outputs is not None:
                max_pin_height = max(len(self.inputs), len(self.outputs))
            elif self.inputs is not None and self.outputs is None:
                max_pin_height = len(self.inputs)
            elif self.inputs is None and self.outputs is not None:
                max_pin_height = len(self.outputs)
            else:
                max_pin_height = 0
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        if self.isSelected():
            self.selection_border_pen.setWidth(3)
            painter.setPen(self.selection_border_pen)
        else:
            self.border_pen.setWidth(0)
            painter.setPen(self.border_pen)

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        if max_pin_height == 0:
            self.custom_width = 55
            self.height = 55

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        painter.drawRoundedRect(
            0,
            0,
            self.custom_width,
            self.height + max_pin_height * self.pin_height,
            self.radius,
            self.radius,
        )

        # Block name
        painter.setPen(self.text_pen)
        painter.setFont(self.text_font)

        metrics = QFontMetrics(painter.font())
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        text_width = metrics.boundingRect(self.name).width() + 24
        text_height = metrics.boundingRect(self.name).height() + 24
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        margin = (text_width - self.custom_width) * 0.5
        text_rect = QRect(-margin, -text_height, text_width, text_height)

        painter.drawText(text_rect, Qt.AlignCenter, self.name)

        # Pin
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        if self.type == BlockType.LOOPS.name:
            self.draw_pins_name(painter, "input", self.processor_inputs, 0)
            self.draw_pins_name(
                painter, "input", self.evaluator_inputs, len(self.processor_inputs)
            )
            self.draw_pins_name(painter, "output", self.processor_outputs, 0)
            self.draw_pins_name(
                painter, "output", self.evaluator_outputs, len(self.processor_outputs)
            )
        else:
            if self.inputs is not None:
                self.draw_pins_name(painter, "input", self.inputs, 0)
            if self.outputs is not None:
                self.draw_pins_name(painter, "output", self.outputs, 0)
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class ToolchainView(QGraphicsView):
    def __init__(self, toolchain):
        super().__init__()

        self.toolchain = toolchain

    def wheelEvent(self, event):
        """In/Out zoom view using the mouse wheel"""

        self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
        factor = (event.angleDelta().y() / 120) * 0.1
        self.scale(1 + factor, 1 + factor)

    def keyPressEvent(self, event):
        """Focus on the toolchain when F key pressed"""
        if event.key() == Qt.Key_F:
            self.custom_focus()
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        if event.key() == Qt.Key_D:
            self.delete_blocks()
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    def custom_focus(self):
        """Custom focus on toolchain"""

        selected_blocks = self.scene().selectedItems()
        if selected_blocks:
            x_list = []
            y_list = []
            width_list = []
            height_list = []
            for block in selected_blocks:
                x_list.append(block.scenePos().x())
                y_list.append(block.scenePos().y())
                width_list.append(block.boundingRect().width())
                height_list.append(block.boundingRect().height())
                min_x = min(x_list)
                min_y = min(y_list) + block.boundingRect().y()
                max_width = max(x_list) + max(width_list) - min_x
                max_height = max(y_list) + max(height_list) - min_y
            rect = QRectF(QRect(min_x, min_y, max_width, max_height))
            toolchain_focus = rect
        else:
            toolchain_focus = self.scene().itemsBoundingRect()

        self.fitInView(toolchain_focus, Qt.KeepAspectRatio)

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    def delete_blocks(self):
        """Custom deletion on toolchain"""
        selected_blocks = self.scene().selectedItems()
        if selected_blocks:
            details = {}
            for block in selected_blocks:
                num_connections = 0
                for connection in self.toolchain.connections:
                    if (
                        block.name == connection.start_block_name
                        or block.name == connection.end_block_name
                    ):
                        num_connections += 1
                if num_connections > 0:
                    details["block"] = num_connections
            if len(details.keys()):
                warning = QMessageBox()
                warning.setIcon(QMessageBox.Warning)
                warning.setWindowTitle(self.tr("Deleting connected block"))
                warning.setInformativeText(
                    self.tr("You can't delete a connected block!")
                )
                warning.setStandardButtons(QMessageBox.Ok)
                warning.exec_()
            else:
                for block in selected_blocks:
                    if block.type == BlockType.DATASETS.name:
                        if (
                            block.name
                            in self.toolchain.web_representation["channel_colors"]
                        ):
                            self.toolchain.web_representation["channel_colors"].pop(
                                block.name
                            )
                    self.toolchain.blocks.remove(block)
                    self.scene().removeItem(block)
                self.toolchain.dataChanged.emit()

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class Toolchain(QWidget):
    """Toolchain designer"""
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    dataChanged = pyqtSignal()

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    def __init__(self, parent=None):
        super().__init__(parent=parent)

        self.json_object = {}

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        with open("beat/editor/widgets/toolchain_style_config.json") as json_file:
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            config_data = json.load(json_file)

        self.scene_config = config_data["drawing_space_config"]
        self.scene = DrawingSpace(self.scene_config)

        self.block_config = config_data["block_config"]
        self.connection_config = config_data["connection_config"]

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        self.view = ToolchainView(self)
        self.view.setScene(self.scene)
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        self.toolbar = QToolBar()

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        # loop_action = QAction(
        #    QIcon("beat/editor/widgets/dataset_icon.png"), "&Loop", self
        # )
        # loop_action.triggered.connect(lambda: self.add_block(BlockType.LOOP))

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        self.dataset_button = QPushButton()
        self.dataset_button.setToolTip("Dataset")
        self.dataset_button.setIcon(QIcon("beat/editor/widgets/dataset_icon.png"))
        self.dataset_edit_menu = QMenu(self)

        self.block_button = QPushButton()
        self.block_button.setToolTip("Block")
        self.block_button.setIcon(QIcon("beat/editor/widgets/block_icon.png"))
        self.block_edit_menu = QMenu(self)
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        self.analyzer_button = QPushButton()
        self.analyzer_button.setToolTip("Analyzer")
        self.analyzer_button.setIcon(QIcon("beat/editor/widgets/analyzer_icon.png"))
        self.analyzer_edit_menu = QMenu(self)

        self.toolbar.addWidget(self.dataset_button)
        self.toolbar.addWidget(self.block_button)
        self.toolbar.addWidget(self.analyzer_button)
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        self.toolbar.setOrientation(Qt.Vertical)

        layout = QHBoxLayout(self)
        layout.addWidget(self.toolbar)
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        layout.addWidget(self.view)
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    def update_channel_path(self, block, old_channel, new_channel):
        # check if current block is synchronized on old_channel
        for connection in self.connections:
            if (
                block.name == connection.start_block_name
                and connection.channel == old_channel
            ):
                # update connection channel
                connection.channel = new_channel

                self.scene.removeItem(connection)

                # Find the corresponding channel
                connection_settings = {}
                connection_settings["channel"] = connection.channel
                # Create the connection
                connection_settings["from"] = (
                    connection.start_block_name + "." + connection.start_pin_name
                )
                connection_settings["to"] = (
                    connection.end_block_name + "." + connection.end_pin_name
                )

                channel_colors = self.json_object.get("representation", {}).get(
                    "channel_colors"
                )
                connection.load(self, connection_settings, channel_colors)
                self.scene.addItem(connection)

    def button_item_selected(self, block_type, name):
        inputs = []
        outputs = []

        if block_type == BlockType.DATASETS.name:
            inputs = None
            name_split = name.split("/")
            database_name = name_split[0] + "/" + name_split[1]
            asset = Asset(self.prefix_path, AssetType.DATABASE, database_name)
            for protocol in asset.declaration["protocols"]:
                if protocol["name"] == name_split[2]:
                    for _set in protocol["sets"]:
                        if _set["name"] == name_split[3]:
                            for key in _set["outputs"].keys():
                                outputs.append(key)
        else:
            if block_type == BlockType.ANALYZERS.name:
                outputs = None
            asset = Asset(self.prefix_path, AssetType.ALGORITHM, name)
            declaration = asset.declaration
            for group in declaration["groups"]:
                if "inputs" in group:
                    for key in group["inputs"].keys():
                        inputs.append(key)
                if "outputs" in group:
                    for key in group["outputs"].keys():
                        outputs.append(key)

        block_item = {}
        block_item["inputs"] = inputs
        block_item["outputs"] = outputs
        init_name_count = 0
        init_name = self.tr("CHANGE_ME")
        for block in self.blocks:
            if block.name.find(init_name) > -1:
                init_name_count += 1
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        new_block_name = init_name + "_" + str(init_name_count)
        block_item["name"] = new_block_name

        self.web_representation["channel_colors"][new_block_name] = "#000000"
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        block = Block(block_type, self.block_config, self.connection_config)
        block.load(self, block_item)
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        block.dataChanged.connect(self.dataChanged)
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        block.dataChanged.emit()
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        self.blocks.append(block)
        self.scene.addItem(block)

    def set_prefix_databases_algorithms_lists(
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        self,
        prefix_path,
        dataset_list,
        algorithm_list,
        sequential_loop_processor_list,
        autonomous_loop_processor_list,
        sequential_loop_evaluator_list,
        autonomous_loop_evaluator_list,
        analyzer_list,
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    ):
        self.prefix_path = prefix_path

        for dataset_name in dataset_list:
            self.dataset_edit_menu.addAction(
                self.tr(dataset_name),
                partial(
                    self.button_item_selected, BlockType.DATASETS.name, dataset_name
                ),
            )

        for algorithm_name in algorithm_list:
            self.block_edit_menu.addAction(
                self.tr(algorithm_name),
                partial(
                    self.button_item_selected, BlockType.BLOCKS.name, algorithm_name
                ),
            )

        for analyzer_name in analyzer_list:
            self.analyzer_edit_menu.addAction(
                self.tr(analyzer_name),
                partial(
                    self.button_item_selected, BlockType.ANALYZERS.name, analyzer_name
                ),
            )

        self.dataset_button.setMenu(self.dataset_edit_menu)
        self.block_button.setMenu(self.block_edit_menu)
        self.analyzer_button.setMenu(self.analyzer_edit_menu)
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    def clear_space(self):
        self.scene.clear()
        self.scene.items().clear()
        self.blocks = []
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        self.connections = []
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        self.channels = []
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    def load(self, json_object):
        """Parse the json in parameter and generates a graph"""

        self.json_object = json_object

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        self.web_representation = self.json_object.get("representation")
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        self.clear_space()
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        # Get datasets, blocks, analyzers
        for block_type in BlockType:
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            for block_item in self.json_object.get(block_type.value, {}):
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                block = Block(
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                    block_type.name, self.block_config, self.connection_config
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                )
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                block.load(self, block_item)
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                # Place blocks (x,y) if information is given
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                if self.web_representation["blocks"] is not None:
                    # if block.name in self.web_representation:
                    if block.name in self.web_representation["blocks"]:
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                        block.setPos(
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                            self.web_representation["blocks"][block.name]["col"],
                            self.web_representation["blocks"][block.name]["row"],
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                        )
                        block.position = block.scenePos()
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                block.dataChanged.connect(self.dataChanged)
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                self.blocks.append(block)
                self.scene.addItem(block)

        # Display connections
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        connections = self.json_object.get("connections", [])
        channel_colors = self.json_object.get("representation", {}).get(
            "channel_colors"
        )
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        for connection_item in connections:
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            connection = Connection(self.connection_config)
            connection.load(self, connection_item, channel_colors)
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            self.connections.append(connection)
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            self.scene.addItem(connection)
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    def dump(self):
        """Returns the json used to load the widget"""

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        data = {}

        if self.web_representation is not None:
            data["representation"] = self.web_representation

        for block_type in BlockType:
            block_type_list = []
            for block in self.blocks:
                block_data = {}
                if block_type == BlockType.from_name(block.type):
                    block_data["name"] = block.name
                    if block.synchronized_channel is not None:
                        block_data["synchronized_channel"] = block.synchronized_channel
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                    if block.type == BlockType.LOOPS.name:
                        block_data["processor_inputs"] = block.processor_inputs
                        block_data["evaluator_inputs"] = block.evaluator_inputs
                        block_data["processor_outputs"] = block.processor_outputs
                        block_data["evaluator_outputs"] = block.evaluator_outputs
                    else:
                        if block.inputs is not None:
                            block_data["inputs"] = block.inputs
                        if block.outputs is not None:
                            block_data["outputs"] = block.outputs
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                    block_type_list.append(block_data)
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                data["representation"]["blocks"][block.name] = {
                    "col": int(block.position.x()),
                    "row": int(block.position.y()),
                    "width": int(block.custom_width),
                    "height": int(block.custom_height),
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                }
            data[block_type.value] = block_type_list

        connection_list = []
        for connection in self.connections:
            connection_data = {}
            connection_data["channel"] = connection.channel
            connection_data["from"] = (
                connection.start_block_name + "." + connection.start_pin_name
            )
            connection_data["to"] = (
                connection.end_block_name + "." + connection.end_pin_name
            )
            connection_list.append(connection_data)

        data["connections"] = connection_list

        return data
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@frozen
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class ToolchainEditor(AbstractAssetEditor):
    def __init__(self, parent=None):
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        super().__init__(AssetType.TOOLCHAIN, parent)
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        self.setObjectName(self.__class__.__name__)
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        self.set_title(self.tr("Toolchain"))

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        self.toolchain_model = AssetModel()
        self.toolchain_model.asset_type = AssetType.TOOLCHAIN

        self.toolchain = Toolchain()
        self.layout().addWidget(self.toolchain, 2)
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        self.layout().addStretch()

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        self.algorithm_list = []
        self.analyzer_list = []
        self.dataset_list = []
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        self.sequential_loop_processor_list = []
        self.autonomous_loop_processor_list = []
        self.sequential_loop_evaluator_list = []
        self.autonomous_loop_evaluator_list = []
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        self.toolchain.dataChanged.connect(self.dataChanged)
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        self.contextChanged.connect(self.__onContextChanged)

    @pyqtSlot()
    def __onContextChanged(self):
        algorithm_model = AlgorithmResourceModel()
        algorithm_model.setAnalyzerEnabled(False)
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        algorithm_model.setTypes([Algorithm.SEQUENTIAL, Algorithm.AUTONOMOUS])
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        dataset_model = DatasetResourceModel()

        self.dataset_list = [
            dataset_model.index(i, 0).data() for i in range(dataset_model.rowCount())
        ]
        self.algorithm_list = [
            algorithm_model.index(i, 0).data()
            for i in range(algorithm_model.rowCount())
        ]
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        algorithm_model.setAnalyzerEnabled(True)
        self.analyzer_list = [
            algorithm_model.index(i, 0).data()
            for i in range(algorithm_model.rowCount())
        ]

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        algorithm_model.setAnalyzerEnabled(False)
        algorithm_model.setTypes([Algorithm.SEQUENTIAL_LOOP_PROCESSOR])
        self.sequential_loop_processor_list = [
            algorithm_model.index(i, 0).data()
            for i in range(algorithm_model.rowCount())
        ]

        algorithm_model.setTypes([Algorithm.AUTONOMOUS_LOOP_PROCESSOR])
        self.autonomous_loop_processor_list = [
            algorithm_model.index(i, 0).data()
            for i in range(algorithm_model.rowCount())
        ]

        algorithm_model.setTypes([Algorithm.SEQUENTIAL_LOOP_EVALUATOR])
        self.sequential_loop_evaluator_list = [
            algorithm_model.index(i, 0).data()
            for i in range(algorithm_model.rowCount())
        ]

        algorithm_model.setTypes([Algorithm.AUTONOMOUS_LOOP_EVALUATOR])
        self.autonomous_loop_evaluator_list = [
            algorithm_model.index(i, 0).data()
            for i in range(algorithm_model.rowCount())
        ]

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