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bec_widgets/bec_widgets/qt_utils/toolbar.py
T

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Python

# pylint: disable=no-name-in-module
from __future__ import annotations
import os
from abc import ABC, abstractmethod
from collections import defaultdict
from typing import Literal
from bec_qthemes._icon.material_icons import material_icon
from qtpy.QtCore import QSize
from qtpy.QtGui import QAction, QColor, QIcon
from qtpy.QtWidgets import QHBoxLayout, QLabel, QMenu, QToolBar, QToolButton, QWidget
import bec_widgets
MODULE_PATH = os.path.dirname(bec_widgets.__file__)
class ToolBarAction(ABC):
"""
Abstract base class for toolbar actions.
Args:
icon_path (str, optional): The name of the icon file from `assets/toolbar_icons`. Defaults to None.
tooltip (bool, optional): The tooltip for the action. Defaults to None.
checkable (bool, optional): Whether the action is checkable. Defaults to False.
"""
def __init__(self, icon_path: str = None, tooltip: str = None, checkable: bool = False):
self.icon_path = (
os.path.join(MODULE_PATH, "assets", "toolbar_icons", icon_path) if icon_path else None
)
self.tooltip = tooltip
self.checkable = checkable
self.action = None
@abstractmethod
def add_to_toolbar(self, toolbar: QToolBar, target: QWidget):
"""Adds an action or widget to a toolbar.
Args:
toolbar (QToolBar): The toolbar to add the action or widget to.
target (QWidget): The target widget for the action.
"""
class SeparatorAction(ToolBarAction):
"""Separator action for the toolbar."""
def add_to_toolbar(self, toolbar: QToolBar, target: QWidget):
toolbar.addSeparator()
class IconAction(ToolBarAction):
"""
Action with an icon for the toolbar.
Args:
icon_path (str): The path to the icon file.
tooltip (str): The tooltip for the action.
checkable (bool, optional): Whether the action is checkable. Defaults to False.
"""
def __init__(self, icon_path: str = None, tooltip: str = None, checkable: bool = False):
super().__init__(icon_path, tooltip, checkable)
def add_to_toolbar(self, toolbar: QToolBar, target: QWidget):
icon = QIcon()
icon.addFile(self.icon_path, size=QSize(20, 20))
self.action = QAction(icon, self.tooltip, target)
self.action.setCheckable(self.checkable)
toolbar.addAction(self.action)
class MaterialIconAction:
"""
Action with a Material icon for the toolbar.
Args:
icon_path (str, optional): The name of the Material icon. Defaults to None.
tooltip (bool, optional): The tooltip for the action. Defaults to None.
checkable (bool, optional): Whether the action is checkable. Defaults to False.
filled (bool, optional): Whether the icon is filled. Defaults to False.
"""
def __init__(
self,
icon_name: str = None,
tooltip: str = None,
checkable: bool = False,
filled: bool = False,
color: str | tuple | QColor | dict[Literal["dark", "light"], str] | None = None,
):
self.icon_name = icon_name
self.tooltip = tooltip
self.checkable = checkable
self.action = None
self.filled = filled
self.color = color
def add_to_toolbar(self, toolbar: QToolBar, target: QWidget):
icon = self.get_icon()
self.action = QAction(icon, self.tooltip, target)
self.action.setCheckable(self.checkable)
toolbar.addAction(self.action)
def get_icon(self):
icon = material_icon(
self.icon_name,
size=(20, 20),
convert_to_pixmap=False,
filled=self.filled,
color=self.color,
)
return icon
class DeviceSelectionAction(ToolBarAction):
"""
Action for selecting a device in a combobox.
Args:
label (str): The label for the combobox.
device_combobox (DeviceComboBox): The combobox for selecting the device.
"""
def __init__(self, label: str, device_combobox):
super().__init__()
self.label = label
self.device_combobox = device_combobox
self.device_combobox.currentIndexChanged.connect(lambda: self.set_combobox_style("#ffa700"))
def add_to_toolbar(self, toolbar, target):
widget = QWidget()
layout = QHBoxLayout(widget)
label = QLabel(f"{self.label}")
layout.addWidget(label)
layout.addWidget(self.device_combobox)
toolbar.addWidget(widget)
def set_combobox_style(self, color: str):
self.device_combobox.setStyleSheet(f"QComboBox {{ background-color: {color}; }}")
class WidgetAction(ToolBarAction):
"""
Action for adding any widget to the toolbar.
Args:
label (str|None): The label for the widget.
widget (QWidget): The widget to be added to the toolbar.
"""
def __init__(self, label: str | None = None, widget: QWidget = None):
super().__init__()
self.label = label
self.widget = widget
def add_to_toolbar(self, toolbar, target):
widget = QWidget()
layout = QHBoxLayout(widget)
layout.setContentsMargins(0, 0, 0, 0)
if self.label is not None:
label = QLabel(f"{self.label}")
layout.addWidget(label)
layout.addWidget(self.widget)
toolbar.addWidget(widget)
class ExpandableMenuAction(ToolBarAction):
"""
Action for an expandable menu in the toolbar.
Args:
label (str): The label for the menu.
actions (dict): A dictionary of actions to populate the menu.
icon_path (str, optional): The path to the icon file. Defaults to None.
"""
def __init__(self, label: str, actions: dict, icon_path: str = None):
super().__init__(icon_path, label)
self.actions = actions
self.widgets = defaultdict(dict)
def add_to_toolbar(self, toolbar: QToolBar, target: QWidget):
button = QToolButton(toolbar)
if self.icon_path:
button.setIcon(QIcon(self.icon_path))
button.setText(self.tooltip)
button.setPopupMode(QToolButton.InstantPopup)
button.setStyleSheet(
"""
QToolButton {
font-size: 14px;
}
QMenu {
font-size: 14px;
}
"""
)
menu = QMenu(button)
for action_id, action in self.actions.items():
sub_action = QAction(action.tooltip, target)
if hasattr(action, "icon_path"):
icon = QIcon()
icon.addFile(action.icon_path, size=QSize(20, 20))
sub_action.setIcon(icon)
elif hasattr(action, "get_icon"):
sub_action.setIcon(action.get_icon())
sub_action.setCheckable(action.checkable)
menu.addAction(sub_action)
self.widgets[action_id] = sub_action
button.setMenu(menu)
toolbar.addWidget(button)
class ModularToolBar(QToolBar):
"""Modular toolbar with optional automatic initialization.
Args:
parent (QWidget, optional): The parent widget of the toolbar. Defaults to None.
actions (list[ToolBarAction], optional): A list of action creators to populate the toolbar. Defaults to None.
target_widget (QWidget, optional): The widget that the actions will target. Defaults to None.
"""
def __init__(self, parent=None, actions: dict | None = None, target_widget=None):
super().__init__(parent)
self.widgets = defaultdict(dict)
self.set_background_color()
if actions is not None and target_widget is not None:
self.populate_toolbar(actions, target_widget)
def populate_toolbar(self, actions: dict, target_widget):
"""Populates the toolbar with a set of actions.
Args:
actions (list[ToolBarAction]): A list of action creators to populate the toolbar.
target_widget (QWidget): The widget that the actions will target.
"""
self.clear()
for action_id, action in actions.items():
action.add_to_toolbar(self, target_widget)
self.widgets[action_id] = action
def set_background_color(self):
self.setIconSize(QSize(20, 20))
self.setMovable(False)
self.setFloatable(False)
self.setContentsMargins(0, 0, 0, 0)
self.setStyleSheet("QToolBar { background-color: rgba(0, 0, 0, 0); border: none; }")