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pyqt-bounding-box

PyQt bounding box for graphic design software

Requirements

PyQt5 >= 5.8

Setup

python -m pip install pyqt-bounding-box

Feature

  • Cursor shape changes properly for position (horizontal/vertical edge, etc.)
  • Being able to resize the box horizontally/vertically/diagonally
  • Being able to move the box with either mouse cursor or arrow keys
  • Being able to change the attribute of the box

Methods Overview

  • setLineWidth(self, n: int) - Default width is 3
  • setColor(self, color: QColor) - Default color is black
  • setStyle(self, style: Qt.PenStyle) - Default style is Qt.DashLine (You can see more about this style in here)
  • setWidth(width: int)
  • setHeight(height: int)
  • setSize(width: int, height: int)

You can use the standard function like setPen(pen: QPen) if you know how to use it, Here's the example:

item = BoundingBox()

pen = QPen()
pen.setStyle(Qt.DashLine)
pen.setWidth(3)
pen.setColor(QColor(0, 0, 0))

item.setPen(pen)

Example

Code Sample

from PyQt5.QtWidgets import QWidget, QGraphicsView, QVBoxLayout, QApplication, QGraphicsScene

from pyqt_bounding_box.boundingBox import BoundingBox


class Example(QWidget):
    def __init__(self):
        super().__init__()
        self.__initUi()

    def __initUi(self):
        view = QGraphicsView()
        self.__scene = QGraphicsScene()
        self.__scene.setSceneRect(0, 0, 400, 400)

        item = BoundingBox()
        # item.setLineWidth(8) If you want to change the edge line width, add the code.
        # item.setColor(QColor(255, 255, 255)) If you want to change the color of the line to white, add the code.
        # item.setStyle(Qt.SolidLine) If you want to change the style of line from dashed to solid line, add the code.
        self.__scene.addItem(item)
        view.setScene(self.__scene)

        lay = QVBoxLayout()
        lay.addWidget(view)

        self.setLayout(lay)


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    example = Example()
    example.show()
    app.exec_()

Result

example.mp4

See Also