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91 lines
2.9 KiB
Python
91 lines
2.9 KiB
Python
# This file is part of BeeRef.
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#
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# BeeRef is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# BeeRef is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with BeeRef. If not, see <https://www.gnu.org/licenses/>.
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"""Classes for items that are added to the scene by the user (images,
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text).
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"""
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import logging
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from PyQt6 import QtCore, QtGui, QtWidgets
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from beeref.selection import SelectionItem
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logger = logging.getLogger('BeeRef')
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class BeePixmapItem(QtWidgets.QGraphicsPixmapItem):
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"""Class for images added by the user."""
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def __init__(self, image, filename=None):
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super().__init__(QtGui.QPixmap.fromImage(image))
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self.save_id = None
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self.filename = filename
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logger.debug(f'Initialized {self}')
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self.setFlags(
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QtWidgets.QGraphicsItem.GraphicsItemFlags.ItemIsMovable
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| QtWidgets.QGraphicsItem.GraphicsItemFlags.ItemIsSelectable)
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def __str__(self):
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return (f'Image "{self.filename}" '
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f'with dimensions {self.width} x {self.height}')
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def setScale(self, factor):
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if factor <= 0:
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return
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logger.debug(f'Setting scale for image "{self.filename}" to {factor}')
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super().setScale(factor)
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def set_pos_center(self, x, y):
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"""Sets the position using the item's center as the origin point."""
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self.setPos(x - self.width * self.scale() / 2,
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y - self.height * self.scale() / 2)
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@property
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def width(self):
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return self.pixmap().size().width()
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@property
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def height(self):
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return self.pixmap().size().height()
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def pixmap_to_bytes(self):
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"""Convert the pixmap data to PNG bytestring."""
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barray = QtCore.QByteArray()
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buffer = QtCore.QBuffer(barray)
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buffer.open(QtCore.QIODevice.OpenMode.WriteOnly)
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img = self.pixmap().toImage()
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img.save(buffer, 'PNG')
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return barray.data()
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def pixmap_from_bytes(self, data):
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"""Set image pimap from a bytestring."""
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pixmap = QtGui.QPixmap()
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pixmap.loadFromData(data)
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self.setPixmap(pixmap)
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def itemChange(self, change, value):
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if change == self.GraphicsItemChange.ItemSelectedChange:
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if value:
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logger.debug(f'Item selected {self.filename}')
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SelectionItem.activate_selection(self)
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else:
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logger.debug(f'Item deselected {self.filename}')
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SelectionItem.clear_selection(self)
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return super().itemChange(change, value)
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