Results 1 to 5 of 5

Thread: [QGraphicsView] Size stretch

  1. 26th April 2011, 10:43 #1
    bspitz
    bspitz is offline Beginner
    Join Date
    Apr 2011
    Posts
    3
    Qt products
    Qt4
    Platforms
    Unix/X11 Windows

    Default [QGraphicsView] Size stretch

    Hi all,

    I'm having troubles stretching QGraphicsViews automatically when the size of my window adjusts.

    This is the code I have at the moment.
    Qt Code: 
    1. self.leftview = QtGui.QGraphicsView()
    2. self.rightview = QtGui.QGraphicsView()
    3.  
    4. self.leftview.setFixedSize(550,600)
    5. self.rightview.setFixedSize(550,600)		
    6.  
    7. leftrect = QtCore.QRectF(self.leftview.rect())
    8. rightrect = QtCore.QRectF(self.rightview.rect())
    9. leftrect.adjust(1,1,-1,-1)
    10. rightrect.adjust(1,1,-1,-1)
    11.  
    12. self.leftscene = TEMDrawer.DiagramScene(leftrect)
    13. self.rightscene = TEMDrawer.DiagramScene(rightrect)
    14.  
    15. self.leftview.setScene(self.leftscene)
    16. self.rightview.setScene(self.rightscene)
    To copy to clipboard, switch view to plain text mode 

    The constructor of the DiagramScene calls the setSceneRect with the given parameter.
    No GUI-related stuff other than that happens in the DiagramScene class.

    Removing the setFixedSize() method calls do not enable automatic stretching of the QGraphicsView or QGraphicsScene.

    Is there a way to automatically stretch a QGraphicsScene or QGraphicsView to fit the space the layout uses?

    Thanks in advance!

    PS: I had a look at the proposed threads #1#2#3, but they did not offer a solution for my problem...
    Reply With Quote Reply With Quote
  2. 26th April 2011, 12:40 #2
    AlexSudnik's Avatar
    AlexSudnik
    AlexSudnik is offline Intermediate user
    Nokia Certified Qt Developer
    Join Date
    Dec 2010
    Location
    Russia
    Posts
    83
    Thanks
    1
    Thanked 12 Times in 11 Posts
    Qt products
    Qt4
    Platforms
    Windows

    Default Re: [QGraphicsView] Size stretch

    Do you use a layout for your graphics view ?

    I mean ,your widget's constructor might look like this:

    Qt Code: 
    1. self.MyGraphicsScene = QtGui.QGraphicsScene( self );
    2.  
    3. # add items to the scene 
    4.  
    5. self.MyGraphicsView =  QtGui.QGraphicsView( self.MyGraphicsScene );
    6.  
    7.  
    8. self.MainLayout = QtGui.QHBoxLayout( self );
    9.  
    10. self.MainLayout .addWidget( self.MyGraphicsView );
    To copy to clipboard, switch view to plain text mode 

    Now your graphics view will be resized as the parent's size changes.
    Reply With Quote Reply With Quote
  3. 28th April 2011, 11:49 #3
    bspitz
    bspitz is offline Beginner
    Join Date
    Apr 2011
    Posts
    3
    Qt products
    Qt4
    Platforms
    Unix/X11 Windows

    Default Re: [QGraphicsView] Size stretch

    Dear Alex, thanks for your reply.

    I do add the views to a layout. The code in the first post is followed by:

    Qt Code: 
    1. self.rightlayout.addWidget(self.qlist)
    2. self.rightlayout.addWidget(self.qinfow)
    3. self.qcheckbox = QtGui.QCheckBox("Hide convergences")
    4. self.rightlayout.addWidget(self.qcheckbox)
    5. self.connect(self.qcheckbox, QtCore.SIGNAL('stateChanged(int)'), self.reflexInfo.convergences_toggled)
    6. self.mainlayout.addWidget(self.splitterwidget,5)
    7. self.mainlayout.addLayout(self.rightlayout)		
    8. self.setLayout(self.mainlayout)
    To copy to clipboard, switch view to plain text mode 

    Do you happen to know what I am doing wrong?
    Last edited by bspitz; 28th April 2011 at 11:49. Reason: formatting
    Reply With Quote Reply With Quote
  4. 28th April 2011, 12:08 #4
    AlexSudnik's Avatar
    AlexSudnik
    AlexSudnik is offline Intermediate user
    Nokia Certified Qt Developer
    Join Date
    Dec 2010
    Location
    Russia
    Posts
    83
    Thanks
    1
    Thanked 12 Times in 11 Posts
    Qt products
    Qt4
    Platforms
    Windows

    Default Re: [QGraphicsView] Size stretch

    Can you share a code ?
    Reply With Quote Reply With Quote
  5. 10th May 2011, 09:23 #5
    bspitz
    bspitz is offline Beginner
    Join Date
    Apr 2011
    Posts
    3
    Qt products
    Qt4
    Platforms
    Unix/X11 Windows

    Default Re: [QGraphicsView] Size stretch

    This is the drawing code:

    Qt Code: 
    1. def __init__(self,usrlist,tsklist,conc_tasklist,parent=None):
    2. 		super(TEMReflexionWidget,self).__init__(parent)
    3.  
    4. 		self.mainlayout = QtGui.QHBoxLayout()
    5. 		self.leftlayout = QtGui.QVBoxLayout()
    6. 		self.innerlayout = QtGui.QHBoxLayout()
    7. 		self.rightlayout = QtGui.QVBoxLayout()
    8.  
    9. 		self.leftview = QtGui.QGraphicsView()
    10. 		self.rightview = QtGui.QGraphicsView()
    11.  
    12. 		self.leftview.setFixedSize(550,600)
    13. 		self.rightview.setFixedSize(550,600)
    14.  
    15. 		self.leftview.setFrameStyle(QtGui.QFrame.NoFrame)
    16. 		self.rightview.setFrameStyle(QtGui.QFrame.NoFrame)
    17. 		self.leftview.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
    18. 		self.leftview.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
    19. 		self.rightview.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
    20. 		self.rightview.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
    21.  
    22. 		leftrect = QtCore.QRectF(self.leftview.rect())
    23. 		rightrect = QtCore.QRectF(self.rightview.rect())
    24. 		leftrect.adjust(1,1,-1,-1)
    25. 		rightrect.adjust(1,1,-1,-1)
    26.  
    27. 		self.leftscene = TEMDrawer.DiagramScene(leftrect)
    28. 		self.rightscene = TEMDrawer.DiagramScene(rightrect)
    29.  
    30. 		self.leftview.setScene(self.leftscene)
    31. 		self.rightview.setScene(self.rightscene)
    32. 		self.qcheckbox = QtGui.QCheckBox("Hide convergences")
    33. 		self.reflexInfo = QReflexionReportWidget()
    34. 		self.qlist = QTaskList(self.reflexInfo,self.conceptual_tasklist,self.impltasklist,self.leftscene,self.rightscene,self,self.qcheckbox)
    35. 		self.qinfow = TEMDrawer.TEMInfoWidget()
    36.  
    37. 		self.innerlayout.addWidget(self.leftview)
    38. 		self.innerlayout.addWidget(self.rightview)
    39.  
    40. 		self.testwidget = QtGui.QWidget()
    41. 		self.testwidget.setLayout(self.innerlayout)
    42. 		self.splitterwidget = QtGui.QSplitter(0)
    43. 		self.splitterwidget.addWidget(self.testwidget)
    44. 		self.splitterwidget.addWidget(self.reflexInfo)
    45.  
    46. 		self.rightlayout.addWidget(self.qlist)
    47. 		self.qline = QtGui.QLineEdit()
    48. 		self.rightlayout.addWidget(QtGui.QLabel("Filter:"))
    49. 		self.rightlayout.addWidget(self.qline)
    50. 		self.rightlayout.addWidget(self.qinfow)
    51.  
    52. 		self.rightlayout.addWidget(self.qcheckbox)
    53. 		self.connect(self.qcheckbox, QtCore.SIGNAL('stateChanged(int)'), self.reflexInfo.convergences_toggled)
    54. 		self.connect(self.qline, QtCore.SIGNAL('textChanged(QString)'), self.qlist.filter_items)
    55. 		#self.leftlayout.addLayout(self.innerlayout)
    56. 		self.mainlayout.addWidget(self.splitterwidget,5)
    57. 		#self.mainlayout.addLayout(self.leftlayout)
    58. 		self.mainlayout.addLayout(self.rightlayout)
    59. 		self.setLayout(self.mainlayout)		
    60.  
    61. 		self.draw_lanes(self.userlist,self.leftscene,0)
    62. 		self.draw_lanes(self.userlist,self.rightscene,1)
    To copy to clipboard, switch view to plain text mode 
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. QGraphicsView and QWebView size question
    By MarkoSan in forum Qt Programming
    Replies: 0
    Last Post: 24th April 2009, 01:25
  2. How to increase size of QGraphicsView Dynamically
    By Kingofhearts_sri in forum Qt Programming
    Replies: 1
    Last Post: 23rd January 2009, 08:54
  3. Problem determining size of QGraphicsView
    By Bocki in forum Qt Programming
    Replies: 3
    Last Post: 17th February 2008, 14:54
  4. Setting the scene size in QGraphicsView
    By Valheru in forum Newbie
    Replies: 5
    Last Post: 11th November 2007, 15:03
  5. Size of QGraphicsView
    By IsleWitch in forum Newbie
    Replies: 10
    Last Post: 10th October 2007, 12:09

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide.