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selection.py
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198 lines (181 loc) · 6.19 KB
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# -*- coding: utf-8 -*-
#
# Licensed under the terms of the BSD 3-Clause
# (see plotpy/LICENSE for details)
# pylint: disable=C0103
"""Selection tools"""
from __future__ import annotations
import numpy as np
from qtpy import QtCore as QC
from qtpy import QtGui as QG
from plotpy.config import _
from plotpy.events import (
KeyEventMatch,
ObjectHandler,
StandardKeyMatch,
StatefulEventFilter,
setup_standard_tool_filter,
)
from plotpy.items import TrImageItem
from plotpy.plot import BasePlot
from plotpy.tools.base import InteractiveTool
class SelectTool(InteractiveTool):
"""
Graphical Object Selection Tool
"""
TITLE = _("Selection")
ICON = "selection.png"
CURSOR = QC.Qt.CursorShape.ArrowCursor
def setup_filter(self, baseplot: BasePlot) -> int:
"""
Set up the event filter for the tool.
Args:
baseplot: Base plot instance
Returns:
Start state of the filter
"""
filter = baseplot.filter
# Initialisation du filtre
start_state = filter.new_state()
# Bouton gauche :
ObjectHandler(filter, QC.Qt.MouseButton.LeftButton, start_state=start_state)
ObjectHandler(
filter,
QC.Qt.MouseButton.LeftButton,
mods=QC.Qt.KeyboardModifier.ControlModifier,
start_state=start_state,
multiselection=True,
)
filter.add_event(
start_state,
KeyEventMatch(
(QC.Qt.Key.Key_Enter, QC.Qt.Key.Key_Return, QC.Qt.Key.Key_Space)
),
self.validate,
start_state,
)
filter.add_event(
start_state,
StandardKeyMatch(QG.QKeySequence.SelectAll),
self.select_all_items,
start_state,
)
filter.add_event(
start_state,
KeyEventMatch(
(
QC.Qt.Key.Key_Left,
QC.Qt.Key.Key_Right,
QC.Qt.Key.Key_Up,
QC.Qt.Key.Key_Down,
)
),
self.move_with_arrow,
start_state,
)
filter.add_event(
start_state,
KeyEventMatch(
[
(QC.Qt.Key.Key_Left, QC.Qt.KeyboardModifier.ControlModifier),
(QC.Qt.Key.Key_Right, QC.Qt.KeyboardModifier.ControlModifier),
(QC.Qt.Key.Key_Up, QC.Qt.KeyboardModifier.ControlModifier),
(QC.Qt.Key.Key_Down, QC.Qt.KeyboardModifier.ControlModifier),
]
),
self.move_with_arrow,
start_state,
)
filter.add_event(
start_state,
KeyEventMatch(
[
(QC.Qt.Key.Key_Left, QC.Qt.KeyboardModifier.ShiftModifier),
(QC.Qt.Key.Key_Right, QC.Qt.KeyboardModifier.ShiftModifier),
(
QC.Qt.Key.Key_Left,
QC.Qt.KeyboardModifier.ControlModifier
| QC.Qt.KeyboardModifier.ShiftModifier,
),
(
QC.Qt.Key.Key_Right,
QC.Qt.KeyboardModifier.ControlModifier
| QC.Qt.KeyboardModifier.ShiftModifier,
),
]
),
self.rotate_with_arrow,
start_state,
)
return setup_standard_tool_filter(filter, start_state)
def select_all_items(self, filter: StatefulEventFilter, event: QC.QEvent) -> None:
"""
Select all items in the plot.
Args:
filter: Event filter
event: Event that triggered the selection
"""
filter.plot.select_all()
filter.plot.replot()
def move_with_arrow(self, filter: StatefulEventFilter, event: QG.QKeyEvent) -> None:
"""
Move selected items with arrow keys.
Args:
filter: Event filter
event: Key event
"""
dx, dy = 0, 0
if event.modifiers() == QC.Qt.KeyboardModifier.NoModifier:
if event.key() == QC.Qt.Key.Key_Left:
dx = -10
elif event.key() == QC.Qt.Key.Key_Right:
dx = 10
elif event.key() == QC.Qt.Key.Key_Up:
dy = -10
elif event.key() == QC.Qt.Key.Key_Down:
dy = 10
elif event.modifiers() == QC.Qt.KeyboardModifier.ControlModifier:
if event.key() == QC.Qt.Key.Key_Left:
dx = -1
elif event.key() == QC.Qt.Key.Key_Right:
dx = 1
elif event.key() == QC.Qt.Key.Key_Up:
dy = -1
elif event.key() == QC.Qt.Key.Key_Down:
dy = 1
selected_items = filter.plot.get_selected_items()
for item in selected_items:
if isinstance(item, TrImageItem):
item.move_with_arrows(dx, dy)
filter.plot.replot()
def rotate_with_arrow(
self, filter: StatefulEventFilter, event: QG.QKeyEvent
) -> None:
"""
Rotate selected items with arrow keys.
Args:
filter: Event filter
event: Key event
"""
dangle = 0
if event.modifiers() == QC.Qt.KeyboardModifier.ShiftModifier:
if event.key() == QC.Qt.Key.Key_Left:
dangle = -np.deg2rad(0.5)
elif event.key() == QC.Qt.Key.Key_Right:
dangle = np.deg2rad(0.5)
elif (
event.modifiers() & QC.Qt.KeyboardModifier.ControlModifier
== QC.Qt.KeyboardModifier.ControlModifier
) and (
event.modifiers() & QC.Qt.KeyboardModifier.ShiftModifier
== QC.Qt.KeyboardModifier.ShiftModifier
):
if event.key() == QC.Qt.Key.Key_Left:
dangle = -np.deg2rad(0.05)
elif event.key() == QC.Qt.Key.Key_Right:
dangle = np.deg2rad(0.05)
selected_items = filter.plot.get_selected_items()
for item in selected_items:
if isinstance(item, TrImageItem):
item.rotate_with_arrows(dangle)
filter.plot.replot()