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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WINDOW_H
+#define WINDOW_H
+
+
+#include <QtGui>
+
+static void qSleep(int msec)
+{
+
+ struct Thread : public QThread
+ {
+ static void wait(int msec)
+ {
+ QThread::msleep(msec);
+ }
+ };
+ Thread::wait(msec);
+}
+
+struct Statistics {
+ Statistics() : output(0),
+ setGeometryCount(0), currentBenchmarkIteration(0), relayoutClicked(false), sleepMsecs(0)
+ {
+ }
+ QMap<QGraphicsWidget*, int> setGeometryTracker;
+ QTime time;
+ int setGeometryCount;
+ int sleepMsecs;
+ QLabel *output;
+ void sleep()
+ {
+ qSleep(sleepMsecs);
+ }
+ int currentBenchmarkIteration;
+ bool relayoutClicked;
+
+};
+
+
+class Window;
+
+class SlowWidget : public QGraphicsWidget {
+public:
+ SlowWidget(QGraphicsWidget *w = 0, Qt::WindowFlags wFlags = 0) : QGraphicsWidget(w, wFlags)
+ {
+ m_window = 0;
+ }
+
+ void setStats(Statistics *stats)
+ {
+ m_stats = stats;
+ }
+
+ void setWindow(Window *window)
+ {
+ m_window = window;
+ }
+
+ void setGeometry(const QRectF &rect);
+
+ bool event(QEvent *e)
+ {
+ if (e->type() == QEvent::LayoutRequest) {
+ if (m_stats->sleepMsecs > 0) {
+ m_stats->sleep();
+ qDebug("sleep %d ms\n", m_stats->sleepMsecs);
+ }
+ }
+ return QGraphicsWidget::event(e);
+ }
+
+ void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+ {
+ Q_UNUSED(option);
+ Q_UNUSED(widget);
+ painter->setBrush(m_brush);
+ painter->drawRoundRect(rect());
+ painter->drawLine(rect().topLeft(), rect().bottomRight());
+ painter->drawLine(rect().bottomLeft(), rect().topRight());
+ }
+
+ void setBrush(const QBrush &brush)
+ {
+ m_brush = brush;
+ }
+private:
+ QBrush m_brush;
+ Statistics *m_stats;
+ Window *m_window;
+};
+
+class Window : public QWidget {
+ Q_OBJECT
+public:
+ Window() : QWidget()
+ {
+ QGraphicsView *m_view = new QGraphicsView(&scene);
+
+ m_window = 0;
+ m_leaf = 0;
+
+ m_button = new QPushButton(tr("Relayout"));
+ m_button->setObjectName("button");
+
+ m_sleepLabel = new QLabel(tr("Sleep:"));
+ m_sleepSpinBox = new QSpinBox;
+ m_sleepSpinBox->setRange(0, 1000);
+ m_sleepSpinBox->setSingleStep(10);
+
+ m_depthLabel = new QLabel(tr("Depth:"));
+ m_depthSpinBox = new QSpinBox;
+ m_depthSpinBox->setObjectName("depthSpinBox");
+ m_depthSpinBox->setRange(1, 200);
+ m_depthSpinBox->setSingleStep(5);
+
+ m_benchmarkIterationsLabel = new QLabel(tr("Benchmark iterations"));
+ m_benchmarkIterationsSpinBox = new QSpinBox;
+ m_benchmarkIterationsSpinBox->setObjectName("benchmarkIterationsSpinBox");
+ m_benchmarkIterationsSpinBox->setRange(1, 1000);
+ m_benchmarkIterationsSpinBox->setValue(41);
+ m_benchmarkIterationsSpinBox->setSingleStep(10);
+
+ m_instantCheckBox = new QCheckBox(tr("Instant propagation"));
+ m_instantCheckBox->setObjectName("instantPropagationCheckbox");
+ QGraphicsLayout::setInstantInvalidatePropagation(true);
+ m_instantCheckBox->setChecked(QGraphicsLayout::instantInvalidatePropagation());
+
+ m_resultLabel = new QLabel(tr("Press relayout to start test"));
+
+ QHBoxLayout *hbox = new QHBoxLayout;
+ hbox->addWidget(m_sleepLabel);
+ hbox->addWidget(m_sleepSpinBox);
+ hbox->addWidget(m_depthLabel);
+ hbox->addWidget(m_depthSpinBox);
+ hbox->addWidget(m_benchmarkIterationsLabel);
+ hbox->addWidget(m_benchmarkIterationsSpinBox);
+ hbox->addWidget(m_instantCheckBox);
+ hbox->addWidget(m_resultLabel);
+ hbox->addStretch();
+ hbox->addWidget(m_button);
+
+ QVBoxLayout *vbox = new QVBoxLayout;
+ vbox->addWidget(m_view);
+ vbox->addLayout(hbox);
+ setLayout(vbox);
+
+ metaObject()->connectSlotsByName(this);
+
+ m_depthSpinBox->setValue(20); // triggers purposedly on_depthSpinBox_valueChanged
+ }
+
+private slots:
+ void on_depthSpinBox_valueChanged(int value)
+ {
+ m_stats.relayoutClicked = false;
+ if (m_window) {
+ QApplication::processEvents();
+ delete m_window;
+ }
+ m_window = new SlowWidget(0, Qt::Window);
+ m_window->setStats(&m_stats);
+ m_window->setWindow(this);
+ QColor col(Qt::black);
+ m_window->setBrush(col);
+ scene.addItem(m_window);
+ m_leaf = 0;
+ const int depth = value;
+ SlowWidget *parent = m_window;
+ for (int i = 1; i < depth; ++i) {
+ QGraphicsLinearLayout *l = new QGraphicsLinearLayout(parent);
+ l->setContentsMargins(2,2,2,2);
+ SlowWidget *child = new SlowWidget;
+ QColor col;
+ col.setHsl(0, 0, 255*i/(depth - 1));
+ child->setBrush(col);
+ child->setStats(&m_stats);
+ child->setWindow(this);
+ l->addItem(child);
+ parent = child;
+ }
+ m_leaf = parent;
+ }
+
+ void on_button_clicked(bool /*check = false*/)
+ {
+ m_stats.relayoutClicked = true;
+ if (m_leaf) {
+ QSizeF sz = m_leaf->size();
+ int w = int(sz.width());
+ w^=16;
+ sz = QSizeF(w,w);
+ m_stats.output = m_resultLabel;
+ m_stats.output->setText(QString("wait..."));
+ m_stats.setGeometryCount = 0;
+ m_stats.setGeometryTracker.clear();
+ m_stats.sleepMsecs = m_sleepSpinBox->value();
+ m_stats.time.start();
+ m_stats.currentBenchmarkIteration = 0;
+ m_leaf->setMinimumSize(sz);
+ m_leaf->setMaximumSize(sz);
+ }
+ }
+
+ void on_instantPropagationCheckbox_toggled(bool checked)
+ {
+ QGraphicsLayout::setInstantInvalidatePropagation(checked);
+ }
+
+public slots:
+ void doAgain()
+ {
+ if (m_leaf) {
+ QSizeF sz = m_leaf->size();
+ int w = int(sz.width());
+ w^=16;
+ sz = QSizeF(w,w);
+ m_leaf->setMinimumSize(sz);
+ m_leaf->setMaximumSize(sz);
+ }
+ }
+
+private:
+public:
+ QGraphicsScene scene;
+ QGraphicsView *m_view;
+ QPushButton *m_button;
+ QLabel *m_sleepLabel;
+ QSpinBox *m_sleepSpinBox;
+ QLabel *m_depthLabel;
+ QSpinBox *m_depthSpinBox;
+ QLabel *m_benchmarkIterationsLabel;
+ QSpinBox *m_benchmarkIterationsSpinBox;
+ QCheckBox *m_instantCheckBox;
+ QLabel *m_resultLabel;
+ QGraphicsWidget *m_leaf;
+ SlowWidget *m_window;
+ Statistics m_stats;
+
+
+};
+
+
+#endif //WINDOW_H
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