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Removes spacing when widget is hidden in QGridLayout

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Removes spacing in QGridLayout when the QWidgets inside of the QGridLayout
are hidden, by checking if the sibling is empty, thus duplicate
spacing can be avoided.

Task-number: QTBUG-52357
Change-Id: I45475e7b264f94ef3bec5f9a4b8cbaa1d53ec6dd
Reviewed-by: Karim Pinter <karim.pinter@theqtcompany.com>
Reviewed-by: Andy Shaw <andy.shaw@theqtcompany.com>
This commit is contained in:
Karim Pinter 2016-04-05 11:45:43 +03:00
parent b7ef2510d1
commit 31c6bee4d5
2 changed files with 28 additions and 3 deletions
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4
src/widgets/kernel/qgridlayout.cpp
View File

@ -746,12 +746,16 @@ void QGridLayoutPrivate::setupSpacings(QVector<QLayoutStruct> &chain,
if (orientation == Qt::Vertical) {
QGridBox *sibling = vReversed ? previousBox : box;
if (sibling) {
if (sibling->item()->isEmpty()) {
spacing = 0;
} else {
QWidget *wid = sibling->item()->widget();
if (wid)
spacing = qMax(spacing, sibling->item()->geometry().top() - wid->geometry().top());
}
}
}
}
if (spacing > chain.at(previousRow).spacing)
chain[previousRow].spacing = spacing;

21
tests/auto/widgets/kernel/qgridlayout/tst_qgridlayout.cpp
View File

@ -80,6 +80,7 @@ private slots:
void taskQTBUG_27420_takeAtShouldUnparentLayout();
void taskQTBUG_40609_addingWidgetToItsOwnLayout();
void taskQTBUG_40609_addingLayoutToItself();
void taskQTBUG_52357_spacingWhenItemIsHidden();
void replaceWidget();
void dontCrashWhenExtendsToEnd();
};
@ -1650,6 +1651,26 @@ void tst_QGridLayout::taskQTBUG_40609_addingLayoutToItself(){
QCOMPARE(layout.count(), 0);
}
void tst_QGridLayout::taskQTBUG_52357_spacingWhenItemIsHidden()
{
QWidget widget;
setFrameless(&widget);
QGridLayout layout(&widget);
layout.setMargin(0);
layout.setSpacing(5);
QPushButton button1;
layout.addWidget(&button1, 0, 0);
QPushButton button2;
layout.addWidget(&button2, 0, 1);
QPushButton button3;
layout.addWidget(&button3, 0, 2);
widget.show();
QVERIFY(QTest::qWaitForWindowExposed(&widget));
int tempWidth = button1.width() + button2.width() + button3.width() + 2 * layout.spacing();
button2.hide();
QTRY_COMPARE_WITH_TIMEOUT(tempWidth, button1.width() + button3.width() + layout.spacing(), 1000);
}
void tst_QGridLayout::replaceWidget()
{
QWidget wdg;