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use QGridLayout in ExampleView to simplify

This commit is contained in:
laserpants 2016-03-22 13:52:17 +03:00
parent 5ca231cdcb
commit 8e102716a9
2 changed files with 17 additions and 22 deletions
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31
examples/exampleview.cpp
View File

@ -1,10 +1,14 @@
#include <QEvent> #include <QDebug>
#include <QGridLayout>
#include <QLabel>
#include "exampleview.h" #include "exampleview.h"
ExampleView::ExampleView(QWidget *parent) ExampleView::ExampleView(QWidget *parent)
: QScrollArea(parent), : QScrollArea(parent),
_widget(0) _widget(0),
_layout(new QGridLayout)
{ {
setLayout(_layout);
} }
ExampleView::~ExampleView() ExampleView::~ExampleView()
@ -13,21 +17,12 @@ ExampleView::~ExampleView()
void ExampleView::setWidget(QWidget *widget) void ExampleView::setWidget(QWidget *widget)
{ {
if (_widget) if (_widget) {
_widget->removeEventFilter(this); _layout->replaceWidget(_widget, widget);
} else {
widget->setParent(this); _layout->addWidget(widget, 1, 1);
widget->installEventFilter(this); _layout->addWidget(new QLabel, 1, 0);
_layout->addWidget(new QLabel, 1, 2);
}
_widget = widget; _widget = widget;
} }
bool ExampleView::eventFilter(QObject *obj, QEvent *event)
{
QEvent::Type type = event->type();
if (QEvent::Resize == type || QEvent::Move == type) {
QRect r(_widget->geometry());
r.moveCenter(rect().center());
_widget->setGeometry(r);
}
return QScrollArea::eventFilter(obj, event);
}

8
examples/exampleview.h
View File

@ -3,6 +3,8 @@
#include <QScrollArea> #include <QScrollArea>
class QGridLayout;
class ExampleView : public QScrollArea class ExampleView : public QScrollArea
{ {
Q_OBJECT Q_OBJECT
@ -13,11 +15,9 @@ public:
void setWidget(QWidget *widget); void setWidget(QWidget *widget);
protected:
bool eventFilter(QObject *obj, QEvent *event) Q_DECL_OVERRIDE;
private: private:
QWidget *_widget; QWidget *_widget;
QGridLayout *const _layout;
}; };
#endif // EXAMPLEVIEW_H #endif // EXAMPLEVIEW_H