Develop Reference

QGraphicsSVGItem ignores (some) clipping paths. Why?

This SVG image is correctly rendered in Firefox and Inkscape, but for some reason, when using QGraphicsSVGItem without anything fancy, it renders this way:
For reference, this is what it looks like on firefox:
As you can see, the back of the card is not supposed to go beyond the white border.
Am I doing something wrong? Is there a (preferably easy) fix?
MWE:
import sys
from PyQt5 import QtWidgets, QtCore, Qt, QtGui
app = QtWidgets.QApplication(sys.argv)
scene = QtWidgets.QGraphicsScene()
scene.addItem(Qt.QGraphicsSvgItem("back-red.svg"))
graphics_view = QtWidgets.QGraphicsView()
graphics_view.setScene(scene)
graphics_view.show()
sys.exit(app.exec())

Probably your svg does not meet the characteristics that Qt uses (for more information read here). One possible solution is to use QWebEngineView(python -m pip install pyqtwebengine):
import os
import sys
from PyQt5 import QtCore, QtGui, QtWidgets, QtSvg, QtWebEngineWidgets
CURRENT_DIR = os.path.dirname(os.path.realpath(__file__))
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
filename = os.path.join(CURRENT_DIR, "back-red.svg")
scene = QtWidgets.QGraphicsScene()
renderer = QtSvg.QSvgRenderer(filename)
graphics_view = QtWidgets.QGraphicsView()
graphics_view.setScene(scene)
graphics_view.show()
view = QtWebEngineWidgets.QWebEngineView()
view.setContextMenuPolicy(QtCore.Qt.NoContextMenu)
# view.page().setBackgroundColor(QtGui.QColor("transparent"))
view.resize(renderer.viewBox().size())
view.load(QtCore.QUrl.fromLocalFile(filename))
item = scene.addWidget(view)
graphics_view.resize(640, 480)
sys.exit(app.exec())

How to get the current url of QwebView?

i use python and pyqt4 for web view.
here my simple code :
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
import os
app = QApplication(sys.argv)
web_view= QWebView()
google='https://www.google.com'
web_view.load(QUrl(google))
web_view.show()
sys.exit(app.exec_())
i want to create a new button where that button any time to execute i want to take current url text link and store it in some variable.
how to do that ?how to take current url from web view ?

QWebView has the url() method that returns the current url, you must call it when you want to get the url.
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
app = QApplication(sys.argv)
w = QWidget()
lay = QVBoxLayout(w)
button = QPushButton("Click Me")
web_view= QWebView()
lay.addWidget(button)
lay.addWidget(web_view)
def foo():
print(web_view.url().toString())
button.clicked.connect(foo)
google='https://www.google.com'
web_view.load(QUrl(google))
w.show()
sys.exit(app.exec_())

Load a local html file into a QWebView in Python

Here's my problem: I want to load a local html file into a QWebView in Python.
EDIT: I use PySide as a Qt package.
My code:
class myWindow(QWidget):
def __init__(self, parent=None):
self.view = QWebView(self)
filepath = "file://" + os.path.join(os.path.dirname(__file__), 'googlemap.html')
self.view.load(QUrl(filepath))
This is just showing me a blank widget.
If I change
self.view.load(QUrl(filepath)
by
self.view.load(QUrl("http://www.google.com/"))
It works fine.
However, the file is clearly in the good directory and I can open the same file directly with my browser.
EDIT 2:
The problem appears after an update on my Raspberry Pi 2 (which runs the code above)

Two observations:
path needs to be absolute (not relative)
use QUrl.fromLocalFile(path)
so something like this
file_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "aa.html"))
local_url = QUrl.fromLocalFile(file_path)
browser.load(local_url)
should work.
Full example:
from PyQt4.QtWebKit import QWebView
from PyQt4.QtGui import QApplication
from PyQt4.QtCore import QUrl
import sys
import os
app = QApplication(sys.argv)
browser = QWebView()
file_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "aa.html"))
local_url = QUrl.fromLocalFile(file_path)
browser.load(local_url)
browser.show()
app.exec_()

Python and webkit Qt4

i'm trying to show a webpage in a frame, but i can't figure out how to do it, also because i can't find the right documentation and/or tutorial for the QtWebkit.
Thanks.
import sys
from PyQt4 import QtGui, QtCore, QtWebKit
class MainWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.resize(350, 250)
self.setWindowTitle('MainWindow')
self.statusBar().showMessage('Loading...')
self.web = QtWebKit.QWebView()
self.web.load(QtCore.QUrl('google.com'))
self.web.show()
app = QtGui.QApplication(sys.argv)
main = MainWindow()
main.show()
sys.exit(app.exec_())

for some doc, you can try the riverbank documentation (though code examples are still in C…)
It seems that your code is fine (maybe add http://?. But did you try to do that without classes? This should work:
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4.QtWebKit import *
app = QApplication(sys.argv)
web = QWebView()
web.load(QUrl("http://google.com"))
web.show()
sys.exit(app.exec_())
Otherwise, there is a problem somewhere else (a proxy maybe?)

Screenshot of a window using python

I'm trying to take a screenshot of the curent window using a python script on linux.
I curently have a script which takes a screenshot of the entire screen:
import sys
from PyQt4.QtGui import QPixmap, QApplication
from datetime import datetime
date = datetime.now()
filename = date.strftime('%Y-%m-%d_%H-%M-%S.jpg')
app = QApplication(sys.argv)
QPixmap.grabWindow(QApplication.desktop().winId()).save(filename, 'jpg')
But a would like to have only the selected window. I know that the problem comes from grabWindow. But I don't know how to resolve it.

simply replace
QApplication.desktop()
with the widget you want to take the screenshot of.
import sys
from PyQt4.QtGui import *
from datetime import datetime
date = datetime.now()
filename = date.strftime('%Y-%m-%d_%H-%M-%S.jpg')
app = QApplication(sys.argv)
widget = QWidget()
# set up the QWidget...
widget.setLayout(QVBoxLayout())
label = QLabel()
widget.layout().addWidget(label)
def shoot():
p = QPixmap.grabWindow(widget.winId())
p.save(filename, 'jpg')
label.setPixmap(p) # just for fun :)
print "shot taken"
widget.layout().addWidget(QPushButton('take screenshot', clicked=shoot))
widget.show()
app.exec_()

Since Qt5, grabWindow and grabWidget are obsolete (see Obsolete Members for QPixmap)
Instead, you can use QWidget.grab()
p=widget.grab()

Alternatively, instead of
p = QPixmap.grabWindow(widget.winId())
you can also use
p = QPixmap.grabWidget(widget)

PyQt5 update
import sys
from PyQt5.QtWidgets import QApplication
from PyQt5.QtGui import QPixmap, QScreen
from datetime import datetime
date = datetime.now()
filename = date.strftime('%Y-%m-%d_%H-%M-%S.jpg')
app = QApplication(sys.argv)
QScreen.grabWindow(app.primaryScreen(),
QApplication.desktop().winId()).save(filename, 'png')