Python QtCore.QRectF Examples

Programming Language: Python

Namespace/Package Name: pyqt5

Class/Type: QtCore

Method/Function: QRectF

Examples at hotexamples.com: 3

PyQt5 is a Python library for creating graphical user interfaces (GUIs). The QtCore module contains core non-GUI functionality, including the QRectF class.

The QRectF class represents a rectangle with floating-point coordinates. Code examples for using QRectF include defining and manipulating rectangles for use in graphics applications, such as in a QGraphicsView.

Here is an example of defining a QRectF object:

from PyQt5.QtCore import QRectF

rect = QRectF(0.0, 0.0, 100.0, 100.0)

This code creates a QRectF object that represents a rectangle with top-left corner at (0,0) and width and height both equal to 100.

Another use for QRectF is in specifying the bounding rectangle for a QGraphicsItem. Here is an example of creating a graphic item with a QRectF bounding rectangle:

from PyQt5.QtGui import QGraphicsItem

class MyItem(QGraphicsItem):
    def __init__(self):
        super().__init__()

    def boundingRect(self):
        return QRectF(0.0, 0.0, 100.0, 100.0)

In this code, the boundingRect method returns a QRectF object that specifies the bounding rectangle for the graphic item. The PyQt5 library provides a powerful set of tools for creating GUI applications in Python, including the QtCore module and the QRectF class.

Python QtCore.QRectF - 3 examples found. These are the top rated real world Python examples of pyqt5.QtCore.QRectF extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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QPointF(10)

QFileInfo(3)

QRectF(3)

QSizeF(2)

QMimeData(1)

Example #1

Show file

File: scene.py Project: sebadima/pysimCoder

 def __init__(self, parent=None):
     super(GraphicsView, self).__init__(parent)
     self.setDragMode(QGraphicsView.RubberBandDrag)
     self.setSceneRect(QtCore.QRectF(-2000, -2000, 4000, 4000))
     self.setRenderHint(QPainter.Antialiasing)
     self.setRenderHint(QPainter.TextAntialiasing)
     self.setAcceptDrops(True)

Example #2

Show file

File: scene.py Project: sebadima/pysimCoder

 def find_itemAt(self, pos):
     items = self.items(
         QtCore.QRectF(pos - QtCore.QPointF(1, 1), QtCore.QSizeF(3, 3)))
     for item in items:
         if isinstance(item,
                       QGraphicsItem) and not isinstance(item, Connection):
             return item
     return None

Example #3

Show file

 def itemAt(self, pos):
     items = self.scene.items(
         QtCore.QRectF(pos - QtCore.QPointF(DB, DB),
                       QtCore.QSizeF(2 * DB, 2 * DB)))
     for item in items:
         if isinstance(item, QGraphicsItem):
             return item
     return None