Why I do have strange extra space?

Question

I have a SingleTweetWidget to display a tweet.

If I put it into a QScrollArea, everything is working fine.

class TweetListWidget(QtGui.QWidget):

    def __init__(self, client=None, parent=None):
        super(TweetListWidget, self).__init__(parent)
        self.setupUi()

    def setupUi(self):
        self.layout = QtGui.QVBoxLayout(self)
        self.setLayout(self.layout)

    def setModel(self, model):
        self.model = model
        self.model.rowsInserted.connect(self._rowsInserted)

    def _rowsInserted(self, parent, start, end):
        for index in range(start, end + 1):
            item = self.model.get_item(index)
            widget = SingleTweetWidget(self.client, item)
            self.layout.insertWidget(index, widget)

But, if I put it into a dialog, there will be some extra space.

def setupUi(self, widget):
    super(NewpostWindow, self).setupUi(widget)
    tweet = SingleTweetWidget(self.client, self.tweet, self)
    self.verticalLayout.insertWidget(0, tweet)

Please notice the space between the time (6s ago) and the blue separator line.

Where is it come from? I have no idea with it.

By the way, you can get the source code of SingleTweetWidget from https://github.com/WeCase/WeCase/blob/dev-0.06/src/TweetListWidget.py

Answer 1

QDialog has a layout which put a vertical space between widgets. It's because the default minimum height of QDialog is higher than the height of the two widgets. You can use self->setMinimumHeight(int) and self->setMaximumHeight(int) and the width variants or self->setFixedSize(w,h), etc...

You can set max/min width/height with every widget.

Read something about QLayout, QDialog and the Qt and see some examples. Qt have very good documentation. See

http://qt-project.org/doc/

http://qt-project.org/doc/qt-4.8/examples-layouts.html

http://qt-project.org/doc/qt-4.8/qwidget.html#setFixedSize