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Dec 21, 2018 · Using the QPainter is more complex than a simple example. I try to create a simple example in order to have a good look at how can be used. The main goal was to understand how can have the basic elements of QPainter. Qt's painting system also provides a number of features to improve overall rendering quality, including alpha blending, Porter-Duff composition modes, anti-aliasing, and linear, radial and conical gradient fills. First steps. IMPORTANT! QPainter can paint on QWidget only in paintEvent(QPaintEvent*). Sample code: Together with the QPaintDevice and QPaintEngine classes, QPainter form the basis for Qt's paint system. QPainter is the class used to perform drawing operations. QPaintDevice represents a device that can be painted on using a QPainter. QPaintEngine provides the interface that the painter uses to draw onto different types of devices.
This function was introduced in Qt 4.7. QPainter.drawStaticText (self, int x, int y, QStaticText staticText) This is an overloaded function. Draws the staticText at coordinates left and top. Note: The y-position is used as the top of the font. This function was introduced in Qt 4.7. QPainter.drawText (self, QPointF p, QString s) Aug 04, 2017 · qp.drawText(event.rect(), Qt.AlignCenter, self.text) The drawText() method draws text on the window. The rect() method of the paint event returns the rectangle that needs to be updated. With the Qt.AlignCenter we align the text in both dimensions. Figure: Drawing text Drawing points. A point is the most simple graphics object that can be drawn.
The following are code examples for showing how to use PySide.QtGui.QPainter().They are from open source Python projects. You can vote up the examples you like or vote down the ones you don't like. QTBUG-29266 QPainter drawText and QFontMetrics not thread safe QTBUG-59481 QPainter::drawText doesn't set boundingRect when pen style is Qt::NoPen QTBUG-28853 QPainter's drawText method can't paint unicode characters with code values above 65535 QTBUG-75752 QPainter::drawText() seems to antialias wrong when solid color is used to paint.
Together with the PySide.QtGui.QPaintDevice and PySide.QtGui.QPaintEngine classes, PySide.QtGui.QPainter form the basis for Qt’s paint system. PySide.QtGui.QPainter is the class used to perform drawing operations. PySide.QtGui.QPaintDevice represents a device that can be painted on using a PySide.QtGui.QPainter. The following are code examples for showing how to use PyQt5.QtGui.QPainter().They are from open source Python projects. You can vote up the examples you like or vote down the ones you don't like.
Qt5 Tutorial: QPainter. In this tutorial, we will learn QPainter.. The common use of QPainter is inside a widget's paint event: Construct and customize (e.g. set the pen or the brush) the painter.
void QPainter::drawText ( int x, int y, const QString &, int pos, int len, TextDirection dir = Auto ) This is an overloaded member function, provided for convenience. It behaves essentially like the above function. Draws the text from position pos, at point (x, y). If len is -1 the entire string is drawn, otherwise just the first len characters.
List of All Members for QPainter. This is the complete list of members for QPainter, including inherited members. The Context2D API renders the canvas as a coordinate system whose origin (0,0) is at the top left corner, as shown in the figure below. Coordinates increase along the x axis from left to right and along the y axis from top to bottom of the canvas.
Nov 04, 2009 · Coordinate System Transformations. With QPainter's default coordinate system, the point (0, 0) is located at the top-left corner of the paint device, x-coordinates increase rightward, and y-coordinates increase downward. On Windows only, the spacing between characters is often incorrect when using QPainter::drawText with a rotated QPainter. In the test application below, the drawn strings should be identical except for a small, almost unnoticeable rotation. As it is, it is clear that the spacing between the "w"'s and "i"'s is way off. Teams. Q&A for Work. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Qt 3 Support Members for QPainter. The following class members are part of the Qt 3 support layer. They are provided to help you port old code to Qt 4. We advise against using them in new code.
Qt's painting system also provides a number of features to improve overall rendering quality, including alpha blending, Porter-Duff composition modes, anti-aliasing, and linear, radial and conical gradient fills. First steps. IMPORTANT! QPainter can paint on QWidget only in paintEvent(QPaintEvent*). Sample code: