Development/Languages/Python/PyKDE WebKit Tutorial - Revision history

Neverendingo: Text replace - "" to ""

2011-06-29T20:50:04Z

Text replace - "</code>" to "</syntaxhighlight>"

Neverendingo: Text replace - "`" to ""`


2011-06-29T20:33:52Z
Text replace - "<code python>" to "<syntaxhighlight lang="python">"

				
				
				
				
			
			← Older revision
			Revision as of 20:33, 29 June 2011
			
Line 7:
Line 7:
  Here we will create a simple web browser application.  We start with a basic Qt version of our application.   Here we will create a simple web browser application.  We start with a basic Qt version of our application.
    
− <code python> + <syntaxhighlight lang="python">
  #!/usr/bin/env python   #!/usr/bin/env python



Tampakrap: »complied« → »compiled« is more accurate in this context, I think ;-)
2008-11-29T12:55:05Z
»complied« → »compiled« is more accurate in this context, I think ;-)

				
				
				
				
			
			← Older revision
			Revision as of 12:55, 29 November 2008
			
Line 24:
Line 24:
  </code>   </code>
    
− Write this out in a file and save it as ''webkit1.py''.  Python applications are not complied, you can run this from a command line with ''python webkit1.py'' (or you can set it as executable and just run ''./webkit1.py''. + Write this out in a file and save it as ''webkit1.py''.  Python applications are not compiled, you can run this from a command line with ''python webkit1.py'' (or you can set it as executable and just run ''./webkit1.py''.
    
  The first line of the code tells Linux to run the file with Python.   The first line of the code tells Linux to run the file with Python.



Jriddell at 00:43, 13 October 2008
2008-10-13T00:43:56Z


				
				
				
				
			
			← Older revision
			Revision as of 00:43, 13 October 2008
			
Line 40:
Line 40:
    
  [[Development/Languages/Python|« Back to Python on Techbase]] | [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|On to Part 2 »]]   [[Development/Languages/Python|« Back to Python on Techbase]] | [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|On to Part 2 »]]
  + 
  + [[Category:Python]]



Jriddell at 00:43, 13 October 2008
2008-10-13T00:43:45Z


				
				
				
				
			
			← Older revision
			Revision as of 00:43, 13 October 2008
			
Line 39:
Line 39:
  [[image:Pykde-tutorial-1.png|frame|center]]   [[image:Pykde-tutorial-1.png|frame|center]]
    
− [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|On to Part 2 »]] + [[Development/Languages/Python|« Back to Python on Techbase]] | [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|On to Part 2 »]]



Jriddell at 23:29, 12 October 2008
2008-10-12T23:29:41Z


				
				
				
				
			
			← Older revision
			Revision as of 23:29, 12 October 2008
			
Line 36:
Line 36:
  Finally we start the application with ''app.exec_()''.  In C++ this method is called just ''exec()'' but we need to add an underscore in Python because ''exec'' is a reserved word.  ''exec_()'' will finish when you close the window, at which point it will return 0 (or another exit code if there are problems).  This gets passed to Python's ''sys.exit()'' function which will quit the programme.   Finally we start the application with ''app.exec_()''.  In C++ this method is called just ''exec()'' but we need to add an underscore in Python because ''exec'' is a reserved word.  ''exec_()'' will finish when you close the window, at which point it will return 0 (or another exit code if there are problems).  This gets passed to Python's ''sys.exit()'' function which will quit the programme.
    
− [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|Part 2]] + It will look like this
  + [[image:Pykde-tutorial-1.png|frame|center]]
  +  
  + [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|On to Part 2 »]]



Jriddell: write tutorial
2008-10-12T23:20:32Z
write tutorial

				
				
				
				
			
			← Older revision
			Revision as of 23:20, 12 October 2008
			
Line 1:
Line 1:
  Creating a simple web browser application in PyKDE using the WebKit widget from Qt.   Creating a simple web browser application in PyKDE using the WebKit widget from Qt.
  + 
  + Python is a powerful yet intuitive programming language.  PyQt and PyKDE are bindings which let you write GUI programmes using Qt and KDE widgets in Python.
  + 
  + PyKDE is used in KDE for the [http://utils.kde.org/projects/printer-applet/ printer-applet] tool from kdeutils which shows current print jobs,  [http://websvn.kde.org/trunk/KDE/kdeadmin/system-config-printer-kde/ system-config-printer-kde] which edits printer settings and for [http://websvn.kde.org/trunk/extragear/utils/guidance-power-manager/ Guidance Power Manager] a battery applet. PyKDE is used extensively in Kubuntu, a KDE based Linux distribution.  It is used to write the installer ([https://launchpad.net/ubiquity Ubiquity]), packaging tools such as [https://launchpad.net/software-properties software-properties] and the tool used for distribution upgrades.
  + 
  + Here we will create a simple web browser application.  We start with a basic Qt version of our application.
  + 
  + <code python>
  + #!/usr/bin/env python
  +  
  + import sys
  + from PyQt4.QtCore import *
  + from PyQt4.QtGui import *
  + from PyQt4.QtWebKit import *
  +  
  + app = QApplication(sys.argv)
  +  
  + web = QWebView()
  + web.load(QUrl("http://kubuntu.org"))
  + web.show()
  +  
  + sys.exit(app.exec_())
  + </code>
  + 
  + Write this out in a file and save it as ''webkit1.py''.  Python applications are not complied, you can run this from a command line with ''python webkit1.py'' (or you can set it as executable and just run ''./webkit1.py''.
  + 
  + The first line of the code tells Linux to run the file with Python.
  + 
  + The next block imports some Python program libraries.  ''sys'' contains useful functions to do with the system.  The PyQt libraries contain GUI widgets and related code.
  + 
  + All Qt applications need to create a QApplication object.  Our code here creates the object passing it ''sys.argv'' which contains and command line options used to start the application (none in our case) and saves it to a variable called ''app''.
  + 
  + Next we create a ''QWebView'' object.  ''QWebView'' is the widget from Qt which gives us a WebKit based browser.  The [http://doc.trolltech.com/latest/qwebview.html QWebView documentation] shows us methods which we can call on our object, the one we are interested in is [http://doc.trolltech.com/4.4/qwebview.html#load load(QUrl)] which loads a web page.  So we call that in the next line.  Then we use ''show()'' to display the widget, it has no parent widget so it will be displayed as a window on your desktop.
  + 
  + Finally we start the application with ''app.exec_()''.  In C++ this method is called just ''exec()'' but we need to add an underscore in Python because ''exec'' is a reserved word.  ''exec_()'' will finish when you close the window, at which point it will return 0 (or another exit code if there are problems).  This gets passed to Python's ''sys.exit()'' function which will quit the programme.
  + 
  + [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2|Part 2]]



Jriddell: start
2008-10-12T22:51:03Z
start
New page
Creating a simple web browser application in PyKDE using the WebKit widget from Qt.

← Older revision		Revision as of 00:43, 13 October 2008
Line 40:		Line 40:

	[[Development/Languages/Python\|« Back to Python on Techbase]] \| [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|On to Part 2 »]]		[[Development/Languages/Python\|« Back to Python on Techbase]] \| [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|On to Part 2 »]]
		+
		+	[[Category:Python]]

← Older revision		Revision as of 00:43, 13 October 2008
Line 39:		Line 39:
	[[image:Pykde-tutorial-1.png\|frame\|center]]		[[image:Pykde-tutorial-1.png\|frame\|center]]

−	[[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|On to Part 2 »]]	+	[[Development/Languages/Python\|« Back to Python on Techbase]] \| [[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|On to Part 2 »]]

← Older revision		Revision as of 23:29, 12 October 2008
Line 36:		Line 36:
	Finally we start the application with ''app.exec_()''. In C++ this method is called just ''exec()'' but we need to add an underscore in Python because ''exec'' is a reserved word. ''exec_()'' will finish when you close the window, at which point it will return 0 (or another exit code if there are problems). This gets passed to Python's ''sys.exit()'' function which will quit the programme.		Finally we start the application with ''app.exec_()''. In C++ this method is called just ''exec()'' but we need to add an underscore in Python because ''exec'' is a reserved word. ''exec_()'' will finish when you close the window, at which point it will return 0 (or another exit code if there are problems). This gets passed to Python's ''sys.exit()'' function which will quit the programme.

−	[[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|Part 2]]	+	It will look like this
		+	[[image:Pykde-tutorial-1.png\|frame\|center]]
		+
		+	[[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|On to Part 2 »]]

← Older revision		Revision as of 23:20, 12 October 2008
Line 1:		Line 1:
	Creating a simple web browser application in PyKDE using the WebKit widget from Qt.		Creating a simple web browser application in PyKDE using the WebKit widget from Qt.
		+
		+	Python is a powerful yet intuitive programming language. PyQt and PyKDE are bindings which let you write GUI programmes using Qt and KDE widgets in Python.
		+
		+	PyKDE is used in KDE for the [http://utils.kde.org/projects/printer-applet/ printer-applet] tool from kdeutils which shows current print jobs, [http://websvn.kde.org/trunk/KDE/kdeadmin/system-config-printer-kde/ system-config-printer-kde] which edits printer settings and for [http://websvn.kde.org/trunk/extragear/utils/guidance-power-manager/ Guidance Power Manager] a battery applet. PyKDE is used extensively in Kubuntu, a KDE based Linux distribution. It is used to write the installer ([https://launchpad.net/ubiquity Ubiquity]), packaging tools such as [https://launchpad.net/software-properties software-properties] and the tool used for distribution upgrades.
		+
		+	Here we will create a simple web browser application. We start with a basic Qt version of our application.
		+
		+	<code python>
		+	#!/usr/bin/env python
		+
		+	import sys
		+	from PyQt4.QtCore import *
		+	from PyQt4.QtGui import *
		+	from PyQt4.QtWebKit import *
		+
		+	app = QApplication(sys.argv)
		+
		+	web = QWebView()
		+	web.load(QUrl("http://kubuntu.org"))
		+	web.show()
		+
		+	sys.exit(app.exec_())
		+	</code>
		+
		+	Write this out in a file and save it as ''webkit1.py''. Python applications are not complied, you can run this from a command line with ''python webkit1.py'' (or you can set it as executable and just run ''./webkit1.py''.
		+
		+	The first line of the code tells Linux to run the file with Python.
		+
		+	The next block imports some Python program libraries. ''sys'' contains useful functions to do with the system. The PyQt libraries contain GUI widgets and related code.
		+
		+	All Qt applications need to create a QApplication object. Our code here creates the object passing it ''sys.argv'' which contains and command line options used to start the application (none in our case) and saves it to a variable called ''app''.
		+
		+	Next we create a ''QWebView'' object. ''QWebView'' is the widget from Qt which gives us a WebKit based browser. The [http://doc.trolltech.com/latest/qwebview.html QWebView documentation] shows us methods which we can call on our object, the one we are interested in is [http://doc.trolltech.com/4.4/qwebview.html#load load(QUrl)] which loads a web page. So we call that in the next line. Then we use ''show()'' to display the widget, it has no parent widget so it will be displayed as a window on your desktop.
		+
		+	Finally we start the application with ''app.exec_()''. In C++ this method is called just ''exec()'' but we need to add an underscore in Python because ''exec'' is a reserved word. ''exec_()'' will finish when you close the window, at which point it will return 0 (or another exit code if there are problems). This gets passed to Python's ''sys.exit()'' function which will quit the programme.
		+
		+	[[Development/Languages/Python/PyKDE_WebKit_Tutorial/Part2\|Part 2]]