File indexing completed on 2024-05-12 15:53:55

 /**
  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
  *
  * This file is part of the KD Chart library.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include <qapplication.h>
 #include <QWidget>
 #include <QDebug>
 #include <QBoxLayout>
 #include <QStyle>
 #include <QtTest/QtTest>
 #include <QGridLayout>
 #include <QLineEdit>
 
 #define KDAB_REIMP
 
 class MyLegendWidget : public QWidget
 {
     Q_OBJECT
 
 public:
     explicit MyLegendWidget( QWidget* parent ) : QWidget( parent ) {
     }
 
     void makeSizeFixed() {
         setSizePolicy( QSizePolicy::Fixed, QSizePolicy::Fixed ); // like Legend
         setFixedSize( 50, 50 ); // hmm Legend has a layout instead.
         //QGridLayout* layout = new QGridLayout( this );
         // ...
     }
 
 protected:
     KDAB_REIMP void resizeEvent( QResizeEvent* ) override {
         // Note that this is never called unless the widget is shown.
         qDebug() << "resizeEvent " << size();
     }
 };
 
 class MyWidgetItem : public QWidgetItem
 {
 public:
     explicit MyWidgetItem(QWidget *w) : QWidgetItem(w) { }
 
     KDAB_REIMP bool isEmpty() const override { return false; }
 };
 
 class TestQLayout : public QObject
 {
     Q_OBJECT
 
 private Q_SLOTS:
 
     // This is very much like KChart::Chart does with legends
     void testBoxLayoutHiddenWidget() {
         QBoxLayout* vLayout = new QVBoxLayout;
         MyLegendWidget* widget1 = new MyLegendWidget( nullptr );
         widget1->resize( 10, 10 );
 
         // Adding a hidden widget doesn't work, the layout ignores it
         // This is why we created MyWidgetItem above, then the layout works
         //vLayout->addWidget( widget1 );
         MyWidgetItem* widgetItem = new MyWidgetItem( widget1 );
         vLayout->addItem( widgetItem );
 
         QRect geom( 100, 100, 800, 800 );
         vLayout->setGeometry( geom );
 
         //vLayout->activate(); // not needed
 
         QCOMPARE( vLayout->geometry(), geom );
         qDebug() << "widget1: " << widget1->geometry();
         QCOMPARE( widget1->geometry(), geom );
 
         delete widget1;
         delete vLayout;
     }
 
     void testBoxLayoutChildWidget() {
         QWidget* topLevelWidget = new QWidget( nullptr );
         // This time the layout is associated with a widget, like d->layout in KChart::Chart.
         QBoxLayout* vLayout = new QVBoxLayout( topLevelWidget );
         MyLegendWidget* widget1 = new MyLegendWidget( topLevelWidget );
         MyWidgetItem* widgetItem = new MyWidgetItem( widget1 );
         vLayout->addItem( widgetItem );
         //vLayout->activate();
 
         QRect geom( 100, 100, 800, 800 );
         vLayout->setGeometry( geom );
         qDebug() << "widget1: " << widget1->geometry();
         // int marg = topLevelWidget->style()->pixelMetric( QStyle::PM_DefaultTopLevelMargin );
         int marg = vLayout->margin();
         QCOMPARE( widget1->geometry(), geom.adjusted(marg,marg,-marg,-marg) );
 
         geom = QRect( 10, 10, 80, 80 );
         vLayout->setGeometry( geom );
         qDebug() << "widget1: " << widget1->geometry();
         QCOMPARE( widget1->geometry(), geom.adjusted(marg,marg,-marg,-marg) );
 
         // And now let's show the widget for real
         geom = QRect( 0, 0, 500, 100 );
         topLevelWidget->resize( geom.size() );
         topLevelWidget->show();
         QApplication::sendPostedEvents();
         QRect expected = geom.adjusted(marg,marg,-marg,-marg);
         qDebug() << "widget1: " << widget1->frameGeometry() << "expecting" << expected;
         // this test is quite useless...
         //QCOMPARE( widget1->frameGeometry(), expected );
         QVERIFY( widget1->isVisible() );
 
         delete topLevelWidget;
     }
 
     void testSubGridLayout() {
         QWidget* topLevelWidget = new QWidget( nullptr );
         QBoxLayout* vLayout = new QVBoxLayout( topLevelWidget );
         QGridLayout* gridLayout = new QGridLayout();
 
         QLineEdit* lineEdit = new QLineEdit( topLevelWidget );
         MyWidgetItem* lineEditWidgetItem = new MyWidgetItem( lineEdit );
         gridLayout->addItem( lineEditWidgetItem, 0, 0 );
 
         MyLegendWidget* widget1 = new MyLegendWidget( topLevelWidget );
         widget1->makeSizeFixed();
 
         MyWidgetItem* widgetItem = new MyWidgetItem( widget1 );
         gridLayout->addItem( widgetItem, 1, 1 );
         vLayout->addLayout( gridLayout );
 
         QRect geom( 100, 100, 800, 800 );
         vLayout->setGeometry( geom );
         qDebug() << "widget1: " << widget1->geometry();
         QVERIFY( widget1->width() > 0 );
 
         delete topLevelWidget;
     }
 };
 
 QTEST_MAIN(TestQLayout)
 
 #include "main.moc"