QscrollArea in PyQT - maemo.org

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	caco3	2010-08-22 , 14:28
	Posts: 560 \| Thanked: 423 times \| Joined on May 2010 @ Switzerland	#1

Hi all

I need some help with a QScrollArea in Python (PyQt).
I made a window in QT Designer for my application and would like to have a scrollable area with all the buttons and so on inside.
I can see the scrollable area, but it does not scroll, even it is hiding some of the objects.
Could somebody have a look on the code below (main.py) and Ui_ConfigWindow.py, generated from QT Designer .ui file) and help me with telling what the missing code piece is?

Thanks a lot!

main.py:

Code:

#!/usr/bin/env python

import sys

from PyQt4.QtCore import * 
from PyQt4.QtGui import * 

from Ui_ConfigWindow import *
  
#####################################################
## Main function
#####################################################
def main():
    global app,  ConfigWindow
   
    app = QApplication(sys.argv)
    ConfigWindow = frmConfigWindow()
    ConfigWindow.show()

    sys.exit(app.exec_())


#####################################################
## Class for Configuration Window
#####################################################
class frmConfigWindow(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        
        self.ui = Ui_ConfigWindow()
        self.ui.setupUi(self)
    
#####################################################
main() # Now we can start it.

Ui_ConfigWindow.py:

Code:

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '/home/gruinelli/Maemo/SleepAnalyser/N900/ConfigWindow.ui'
#
# Created: Sun Aug 22 14:06:27 2010
#      by: PyQt4 UI code generator 4.7.3
#
# WARNING! All changes made in this file will be lost!

from PyQt4 import QtCore, QtGui

class Ui_ConfigWindow(object):
    def setupUi(self, ConfigWindow):
        ConfigWindow.setObjectName("ConfigWindow")
        ConfigWindow.resize(800, 440)
        ConfigWindow.setSizeIncrement(QtCore.QSize(0, 0))
        self.centralwidget = QtGui.QWidget(ConfigWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.lblIcon = QtGui.QLabel(self.centralwidget)
        self.lblIcon.setGeometry(QtCore.QRect(660, 10, 117, 128))
        self.lblIcon.setText("")
        self.lblIcon.setPixmap(QtGui.QPixmap("img/SleepAnalyser.png"))
        self.lblIcon.setScaledContents(True)
        self.lblIcon.setObjectName("lblIcon")
        self.scrollArea = QtGui.QScrollArea(self.centralwidget)
        self.scrollArea.setGeometry(QtCore.QRect(0, 0, 651, 421))
        self.scrollArea.setFrameShape(QtGui.QFrame.StyledPanel)
        self.scrollArea.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        self.scrollArea.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        self.scrollArea.setWidgetResizable(True)
        self.scrollArea.setObjectName("scrollArea")
        self.scrollAreaWidgetContents = QtGui.QWidget(self.scrollArea)
        self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 628, 398))
        self.scrollAreaWidgetContents.setObjectName("scrollAreaWidgetContents")
        self.SlrDelayStart = QtGui.QSlider(self.scrollAreaWidgetContents)
        self.SlrDelayStart.setEnabled(True)
        self.SlrDelayStart.setGeometry(QtCore.QRect(250, 320, 211, 71))
        self.SlrDelayStart.setMaximum(120)
        self.SlrDelayStart.setOrientation(QtCore.Qt.Horizontal)
        self.SlrDelayStart.setObjectName("SlrDelayStart")
        self.cSilentProfile = QtGui.QCheckBox(self.scrollAreaWidgetContents)
        self.cSilentProfile.setGeometry(QtCore.QRect(10, 80, 611, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.cSilentProfile.setFont(font)
        self.cSilentProfile.setObjectName("cSilentProfile")
        self.lblUserName = QtGui.QLabel(self.scrollAreaWidgetContents)
        self.lblUserName.setGeometry(QtCore.QRect(150, 230, 161, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.lblUserName.setFont(font)
        self.lblUserName.setText("")
        self.lblUserName.setObjectName("lblUserName")
        self.lblDelayStart = QtGui.QLabel(self.scrollAreaWidgetContents)
        self.lblDelayStart.setEnabled(True)
        self.lblDelayStart.setGeometry(QtCore.QRect(150, 320, 91, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.lblDelayStart.setFont(font)
        self.lblDelayStart.setObjectName("lblDelayStart")
        self.cOfflineMode = QtGui.QCheckBox(self.scrollAreaWidgetContents)
        self.cOfflineMode.setGeometry(QtCore.QRect(10, 10, 611, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.cOfflineMode.setFont(font)
        self.cOfflineMode.setObjectName("cOfflineMode")
        self.cStopAfterAlarm = QtGui.QCheckBox(self.scrollAreaWidgetContents)
        self.cStopAfterAlarm.setGeometry(QtCore.QRect(10, 150, 611, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.cStopAfterAlarm.setFont(font)
        self.cStopAfterAlarm.setObjectName("cStopAfterAlarm")
        self.label_7 = QtGui.QLabel(self.scrollAreaWidgetContents)
        self.label_7.setGeometry(QtCore.QRect(20, 230, 131, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.label_7.setFont(font)
        self.label_7.setObjectName("label_7")
        self.bEditUserName = QtGui.QPushButton(self.scrollAreaWidgetContents)
        self.bEditUserName.setGeometry(QtCore.QRect(320, 230, 141, 71))
        font = QtGui.QFont()
        font.setPointSize(18)
        self.bEditUserName.setFont(font)
        self.bEditUserName.setIconSize(QtCore.QSize(24, 24))
        self.bEditUserName.setObjectName("bEditUserName")
        self.label_8 = QtGui.QLabel(self.scrollAreaWidgetContents)
        self.label_8.setEnabled(True)
        self.label_8.setGeometry(QtCore.QRect(20, 320, 131, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.label_8.setFont(font)
        self.label_8.setObjectName("label_8")
        self.plainTextEdit = QtGui.QPlainTextEdit(self.scrollAreaWidgetContents)
        self.plainTextEdit.setEnabled(True)
        self.plainTextEdit.setGeometry(QtCore.QRect(0, 540, 621, 91))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.plainTextEdit.setFont(font)
        self.plainTextEdit.setReadOnly(True)
        self.plainTextEdit.setObjectName("plainTextEdit")
        self.cSilentProfile_2 = QtGui.QCheckBox(self.scrollAreaWidgetContents)
        self.cSilentProfile_2.setGeometry(QtCore.QRect(10, 400, 611, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.cSilentProfile_2.setFont(font)
        self.cSilentProfile_2.setObjectName("cSilentProfile_2")
        self.cSilentProfile_3 = QtGui.QCheckBox(self.scrollAreaWidgetContents)
        self.cSilentProfile_3.setGeometry(QtCore.QRect(10, 470, 611, 71))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.cSilentProfile_3.setFont(font)
        self.cSilentProfile_3.setObjectName("cSilentProfile_3")
        self.scrollArea.setWidget(self.scrollAreaWidgetContents)
        ConfigWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(ConfigWindow)
        QtCore.QMetaObject.connectSlotsByName(ConfigWindow)

    def retranslateUi(self, ConfigWindow):
        ConfigWindow.setWindowTitle(QtGui.QApplication.translate("ConfigWindow", "SleepAnalyser (Settings)", None, QtGui.QApplication.UnicodeUTF8))
        self.cSilentProfile.setText(QtGui.QApplication.translate("ConfigWindow", "Change to Silent Profile while recording", None, QtGui.QApplication.UnicodeUTF8))
        self.lblDelayStart.setText(QtGui.QApplication.translate("ConfigWindow", "120 sec", None, QtGui.QApplication.UnicodeUTF8))
        self.cOfflineMode.setText(QtGui.QApplication.translate("ConfigWindow", "Change to Offline Mode while recording", None, QtGui.QApplication.UnicodeUTF8))
        self.cStopAfterAlarm.setText(QtGui.QApplication.translate("ConfigWindow", "Stop recording after alarm occured", None, QtGui.QApplication.UnicodeUTF8))
        self.label_7.setText(QtGui.QApplication.translate("ConfigWindow", "User name:", None, QtGui.QApplication.UnicodeUTF8))
        self.bEditUserName.setText(QtGui.QApplication.translate("ConfigWindow", "Change", None, QtGui.QApplication.UnicodeUTF8))
        self.label_8.setText(QtGui.QApplication.translate("ConfigWindow", "Start delay:", None, QtGui.QApplication.UnicodeUTF8))
        self.plainTextEdit.setPlainText(QtGui.QApplication.translate("ConfigWindow", "More settings can be changed at your own risk in the file ~/.SleepAnalyer/SleepAnalyser.conf", None, QtGui.QApplication.UnicodeUTF8))
        self.cSilentProfile_2.setText(QtGui.QApplication.translate("ConfigWindow", "bla", None, QtGui.QApplication.UnicodeUTF8))
        self.cSilentProfile_3.setText(QtGui.QApplication.translate("ConfigWindow", "bla", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    ConfigWindow = QtGui.QMainWindow()
    ui = Ui_ConfigWindow()
    ui.setupUi(ConfigWindow)
    ConfigWindow.show()
    sys.exit(app.exec_())

Attached Files

Window_with_QScrollArea.zip (3.3 KB, 261 views)

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Last edited by caco3; 2010-08-22 at 22:59.

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	Khertan	2010-08-23 , 08:18
	Posts: 1,012 \| Thanked: 817 times \| Joined on Jul 2007 @ France	#2

under self.scrollarea = QtGui.QScrollArea(...) in ui_ConfigWindow.py

add :
scroller = self.scrollArea.property("kineticScroller").toPyOb ject()
scroller.setEnabled(True)

if you want an example in the method setupGui of KhweeteurPref class:
http://gitorious.org/khweeteur/khwee...ur/__init__.py

And the thread you could find if u ve used the search :

http://talk.maemo.org/showthread.php?t=60569

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KhtEditor - Sdist_Maemo - Khweeteur - PyPackager - KhtSimpleText - KhtNotes - KhtBMA - Wleux - and more ...

Last edited by Khertan; 2010-08-23 at 08:21.

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	caco3	2010-08-23 , 20:29
	Posts: 560 \| Thanked: 423 times \| Joined on May 2010 @ Switzerland	#3

Hi Kerthan

Thank you for your quick response.

I tried it in the way you showed me, but it is still not scrollable.
I also played around with having another qwidget with a bigger size in the QscrollArea.
Also with your modifications, it would not run anymore outside a Maemo environment.
I found an example [1] that works on my Linux PC as well as on my N900, but I do not understand how it works and how I can adapt it for QT Designer code and a QMainWindow.

Also I think there should be a better way than modifying ui_ConfigWindow.py, as it is auto generated from QT Designer and would lose those changes every time I modify the gui.

I tried to run your example, I even downloaded the complete source code (master tar.gz), but it failed running as it misses the module khweeteur. Why is it not included in the package?

[1] http://stackoverflow.com/questions/1...with-this-code

P.S. I used the search function, and I also fond the mentioned thread, but they did not help me

Thank you for your help!

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Venemo

	caco3	2010-08-24 , 23:34
	Posts: 560 \| Thanked: 423 times \| Joined on May 2010 @ Switzerland	#4

Hi all

After a long time searching in the web I figured out that I have to define the Layout explicitly in QT Designer.
See: http://www.qtcentre.org/threads/2926...Area-Confusion

I am wondering why they could not have solved that better. It would have saved me several hours...

Anyway, it seems to work quite well, also on the N900.
@Khertan: I did not add your 2 code lines, but scrolling seems still o behave quite nice. Is it possible that it is activated by default and the code not needed?

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	fpp	2010-09-02 , 20:33
	Posts: 2,853 \| Thanked: 968 times \| Joined on Nov 2005	#5

Originally Posted by Khertan

under self.scrollarea = QtGui.QScrollArea(...) in ui_ConfigWindow.py
add :
scroller = self.scrollArea.property("kineticScroller").toPyOb ject()
scroller.setEnabled(True)
if you want an example in the method setupGui of KhweeteurPref class:
http://gitorious.org/khweeteur/khwee...ur/__init__.py

Thanks a lot for that example Khertan ! I'd been pulling my hair out on this scrollArea thing for ages...

However, after a lot of testing, I find that the "scroller" business is not really necessary. Setting a (large) minimum size on the scrollArea's widget, and (maybe) expanding size policies on both the scrollArea and widget, as in your setupGui method, seems to be enough.

The benefit is that this is all doable in Designer, with no need to modify the python UI file afterwards...

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	Khertan	2010-09-03 , 13:52
	Posts: 1,012 \| Thanked: 817 times \| Joined on Jul 2007 @ France	#6

In fact it s depends on object you put in your scrollarea ... if you put a QTextEdit like in KhtEditor (http://gitorious.org/khteditor) you need to use this crappy trick.

Ps:KhtEditor already have ctrl-d shortcut

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	fpp	2010-09-03 , 18:13
	Posts: 2,853 \| Thanked: 968 times \| Joined on Nov 2005	#7

Originally Posted by Khertan

In fact it s depends on object you put in your scrollarea ... if you put a QTextEdit like in KhtEditor (http://gitorious.org/khteditor) you need to use this crappy trick.

Ah, OK... that was not the case in my first test, but it will be in the next... so good to know !

Ps:KhtEditor already have ctrl-d shortcut

Nice that you remembered ! :-)

I really need to replace my old PyGTKEditor, I keep forgetting since it's not in the repos anymore...

EDIT: oh wait, actually it *is* in devel... i was just typing it wrong :-)

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Last edited by fpp; 2010-09-05 at 16:33.

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	Khertan	2010-09-06 , 04:44
	Posts: 1,012 \| Thanked: 817 times \| Joined on Jul 2007 @ France	#8

Originally Posted by fpp

EDIT: oh wait, actually it *is* in devel... i was just typing it wrong :-)

Yep explaining people why HAM didn't update application even if there is new version in my repository was too borring. And the fact is also that only 2% of users installed my repository, the other was still reporting errors on old version of my softs.

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	fpp	2010-09-06 , 07:51
	Posts: 2,853 \| Thanked: 968 times \| Joined on Nov 2005	#9

:-)

Stupid old HAM... is FAPMAN any better ?

Anyway, KhtEditor is already really nice... maybe it could use a pair of PgUp/PgDn icons on the toolbar, for those who don't have them remapped on the keyboard ?

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