diff -r 000000000000 -r 1918ee327afb tests/auto/qgraphicseffect/tst_qgraphicseffect.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/auto/qgraphicseffect/tst_qgraphicseffect.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,468 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtTest/QtTest>
+#include <QtGui/qdesktopwidget.h>
+#include <QtGui/qgraphicseffect.h>
+#include <QtGui/qgraphicsview.h>
+#include <QtGui/qgraphicsscene.h>
+#include <QtGui/qgraphicsitem.h>
+#include <QtGui/qstyleoption.h>
+
+#include "../../shared/util.h"
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QGraphicsEffect : public QObject
+{
+    Q_OBJECT
+public slots:
+    void initTestCase();
+
+private slots:
+    void setEnabled();
+    void source();
+    void boundingRectFor();
+    void boundingRect();
+    void draw();
+    void opacity();
+    void grayscale();
+    void colorize();
+};
+
+void tst_QGraphicsEffect::initTestCase()
+{}
+
+class CustomItem : public QGraphicsRectItem
+{
+public:
+    CustomItem(qreal x, qreal y, qreal width, qreal height)
+        : QGraphicsRectItem(x, y, width, height), numRepaints(0),
+          m_painter(0), m_styleOption(0)
+    {}
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+    {
+        m_painter = painter;
+        m_styleOption = option;
+        ++numRepaints;
+        QGraphicsRectItem::paint(painter, option, widget);
+    }
+
+    void reset()
+    {
+        numRepaints = 0;
+        m_painter = 0;
+        m_styleOption = 0;
+    }
+
+    int numRepaints;
+    QPainter *m_painter;
+    const QStyleOption *m_styleOption;
+};
+
+class CustomEffect : public QGraphicsEffect
+{
+public:
+    CustomEffect()
+        : QGraphicsEffect(), numRepaints(0), m_margin(10),
+          doNothingInDraw(false), m_painter(0), m_styleOption(0), m_source(0), m_opacity(1.0)
+    {}
+
+    QRectF boundingRectFor(const QRectF &rect) const
+    { return rect.adjusted(-m_margin, -m_margin, m_margin, m_margin); }
+
+    void reset()
+    {
+        numRepaints = 0;
+        m_sourceChangedFlags = QGraphicsEffect::ChangeFlags();
+        m_painter = 0;
+        m_styleOption = 0;
+        m_source = 0;
+        m_opacity = 1.0;
+    }
+
+    void setMargin(int margin)
+    {
+        m_margin = margin;
+        updateBoundingRect();
+    }
+
+    int margin() const
+    { return m_margin; }
+
+    void draw(QPainter *painter, QGraphicsEffectSource *source)
+    {
+        ++numRepaints;
+        if (doNothingInDraw)
+            return;
+        m_source = source;
+        m_painter = painter;
+        m_styleOption = source->styleOption();
+        m_opacity = painter->opacity();
+        source->draw(painter);
+    }
+
+    void sourceChanged(QGraphicsEffect::ChangeFlags flags)
+    { m_sourceChangedFlags |= flags; }
+
+    int numRepaints;
+    int m_margin;
+    QGraphicsEffect::ChangeFlags m_sourceChangedFlags;
+    bool doNothingInDraw;
+    QPainter *m_painter;
+    const QStyleOption *m_styleOption;
+    QGraphicsEffectSource *m_source;
+    qreal m_opacity;
+};
+
+void tst_QGraphicsEffect::setEnabled()
+{
+    CustomEffect effect;
+    QVERIFY(effect.isEnabled());
+
+    effect.setEnabled(false);
+    QVERIFY(!effect.isEnabled());
+}
+
+void tst_QGraphicsEffect::source()
+{
+    QPointer<CustomEffect> effect = new CustomEffect;
+    QVERIFY(!effect->source());
+    QVERIFY(!effect->m_sourceChangedFlags);
+
+    // Install effect on QGraphicsItem.
+    QGraphicsItem *item = new QGraphicsRectItem(0, 0, 10, 10);
+    item->setGraphicsEffect(effect);
+    QVERIFY(effect->source());
+    QCOMPARE(effect->source()->graphicsItem(), item);
+    QVERIFY(effect->m_sourceChangedFlags & QGraphicsEffect::SourceAttached);
+    effect->reset();
+
+    // Make sure disabling/enabling the effect doesn't change the source.
+    effect->setEnabled(false);
+    QVERIFY(effect->source());
+    QCOMPARE(effect->source()->graphicsItem(), item);
+    QVERIFY(!effect->m_sourceChangedFlags);
+    effect->reset();
+
+    effect->setEnabled(true);
+    QVERIFY(effect->source());
+    QCOMPARE(effect->source()->graphicsItem(), item);
+    QVERIFY(!effect->m_sourceChangedFlags);
+    effect->reset();
+
+    // Uninstall effect on QGraphicsItem.
+    effect->reset();
+    item->setGraphicsEffect(0);
+    QVERIFY(!effect->source());
+    QVERIFY(effect->m_sourceChangedFlags & QGraphicsEffect::SourceDetached);
+
+    // The item takes ownership and should delete the effect when destroyed.
+    item->setGraphicsEffect(effect);
+    QPointer<QGraphicsEffectSource> source = effect->source();
+    QVERIFY(source);
+    QCOMPARE(source->graphicsItem(), item);
+    delete item;
+    QVERIFY(!effect);
+    QVERIFY(!source);
+}
+
+void tst_QGraphicsEffect::boundingRectFor()
+{
+    CustomEffect effect;
+    int margin = effect.margin();
+    const QRectF source(0, 0, 100, 100);
+    QCOMPARE(effect.boundingRectFor(source), source.adjusted(-margin, -margin, margin, margin));
+
+    effect.setMargin(margin = 20);
+    QCOMPARE(effect.boundingRectFor(source), source.adjusted(-margin, -margin, margin, margin));
+}
+
+void tst_QGraphicsEffect::boundingRect()
+{
+    // No source; empty bounding rect.
+    CustomEffect *effect = new CustomEffect;
+    QCOMPARE(effect->boundingRect(), QRectF());
+
+    // Install effect on QGraphicsItem.
+    QRectF itemRect(0, 0, 100, 100);
+    QGraphicsRectItem *item = new QGraphicsRectItem;
+    item->setRect(itemRect);
+    item->setGraphicsEffect(effect);
+    int margin = effect->margin();
+    QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
+    QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
+
+    // Make sure disabling/enabling the effect doesn't change the bounding rect.
+    effect->setEnabled(false);
+    QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
+    QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
+    effect->setEnabled(true);
+    QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
+    QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
+
+    // Change effect margins.
+    effect->setMargin(margin = 20);
+    QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
+    QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
+
+    // Uninstall effect on QGraphicsItem.
+    item->setGraphicsEffect(0);
+    QCOMPARE(effect->boundingRect(), QRectF());
+
+    delete effect;
+    delete item;
+}
+
+void tst_QGraphicsEffect::draw()
+{
+    QGraphicsScene scene;
+    CustomItem *item = new CustomItem(0, 0, 100, 100);
+    scene.addItem(item);
+
+    QGraphicsView view(&scene);
+    view.show();
+    QTest::qWaitForWindowShown(&view);
+    QTRY_VERIFY(item->numRepaints > 0);
+    item->reset();
+
+    // Make sure installing the effect triggers a repaint.
+    CustomEffect *effect = new CustomEffect;
+    item->setGraphicsEffect(effect);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 1);
+    QCOMPARE(item->numRepaints, 1);
+
+    // Make sure QPainter* and QStyleOptionGraphicsItem* stays persistent
+    // during QGraphicsEffect::draw/QGraphicsItem::paint.
+    QVERIFY(effect->m_painter);
+    QCOMPARE(effect->m_painter, item->m_painter);
+    QCOMPARE(effect->m_styleOption, item->m_styleOption);
+    // Make sure QGraphicsEffect::source is persistent.
+    QCOMPARE(effect->m_source, effect->source());
+    effect->reset();
+    item->reset();
+
+    // Make sure updating the source triggers a repaint.
+    item->update();
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 1);
+    QCOMPARE(item->numRepaints, 1);
+    QVERIFY(effect->m_sourceChangedFlags & QGraphicsEffect::SourceInvalidated);
+    effect->reset();
+    item->reset();
+
+    // Make sure changing the effect's bounding rect triggers a repaint.
+    effect->setMargin(20);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 1);
+    QCOMPARE(item->numRepaints, 1);
+    effect->reset();
+    item->reset();
+
+    // Make sure change the item's bounding rect triggers a repaint.
+    item->setRect(0, 0, 50, 50);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 1);
+    QCOMPARE(item->numRepaints, 1);
+    QVERIFY(effect->m_sourceChangedFlags & QGraphicsEffect::SourceBoundingRectChanged);
+    effect->reset();
+    item->reset();
+
+    // Make sure the effect is the one to issue a repaint of the item.
+    effect->doNothingInDraw = true;
+    item->update();
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 1);
+    QCOMPARE(item->numRepaints, 0);
+    effect->doNothingInDraw = false;
+    effect->reset();
+    item->reset();
+
+    // Make sure we update the source when disabling/enabling the effect.
+    effect->setEnabled(false);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 0);
+    QCOMPARE(item->numRepaints, 1);
+    effect->reset();
+    item->reset();
+
+    effect->setEnabled(true);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 1);
+    QCOMPARE(item->numRepaints, 1);
+    effect->reset();
+    item->reset();
+
+    // Effect is already enabled; nothing should happen.
+    effect->setEnabled(true);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 0);
+    QCOMPARE(item->numRepaints, 0);
+
+    // Make sure uninstalling an effect triggers a repaint.
+    item->setGraphicsEffect(0);
+    QTest::qWait(50);
+    QCOMPARE(effect->numRepaints, 0);
+    QCOMPARE(item->numRepaints, 1);
+    delete effect;
+}
+
+void tst_QGraphicsEffect::opacity()
+{
+    // Make sure the painter's opacity is correct in QGraphicsEffect::draw.
+    QGraphicsScene scene;
+    CustomItem *item = new CustomItem(0, 0, 100, 100);
+    item->setOpacity(0.5);
+    CustomEffect *effect = new CustomEffect;
+    item->setGraphicsEffect(effect);
+    scene.addItem(item);
+
+    QGraphicsView view(&scene);
+    view.show();
+    QTest::qWaitForWindowShown(&view);
+    QTRY_VERIFY(effect->numRepaints > 0);
+    QCOMPARE(effect->m_opacity, qreal(0.5));
+}
+
+void tst_QGraphicsEffect::grayscale()
+{
+    if (qApp->desktop()->depth() < 24) {
+        QSKIP("Test only works on 32 bit displays", SkipAll);
+        return;
+    }
+
+    QGraphicsScene scene(0, 0, 100, 100);
+
+    QGraphicsRectItem *item = scene.addRect(0, 0, 50, 50);
+    item->setPen(Qt::NoPen);
+    item->setBrush(QColor(122, 193, 66)); // Qt light green
+
+    QGraphicsGrayscaleEffect *effect = new QGraphicsGrayscaleEffect;
+    item->setGraphicsEffect(effect);
+
+    QPainter painter;
+    QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
+
+    image.fill(0);
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    scene.render(&painter);
+    painter.end();
+
+    QCOMPARE(image.pixel(10, 10), qRgb(148, 148, 148));
+
+    effect->setStrength(0.5);
+
+    image.fill(0);
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    scene.render(&painter);
+    painter.end();
+
+    QCOMPARE(image.pixel(10, 10), qRgb(135, 171, 107));
+
+    effect->setStrength(0.0);
+
+    image.fill(0);
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    scene.render(&painter);
+    painter.end();
+
+    QCOMPARE(image.pixel(10, 10), qRgb(122, 193, 66));
+}
+
+void tst_QGraphicsEffect::colorize()
+{
+    if (qApp->desktop()->depth() < 24) {
+        QSKIP("Test only works on 32 bit displays", SkipAll);
+        return;
+    }
+
+    QGraphicsScene scene(0, 0, 100, 100);
+
+    QGraphicsRectItem *item = scene.addRect(0, 0, 50, 50);
+    item->setPen(Qt::NoPen);
+    item->setBrush(QColor(122, 193, 66)); // Qt light green
+
+    QGraphicsColorizeEffect *effect = new QGraphicsColorizeEffect;
+    effect->setColor(QColor(102, 153, 51)); // Qt dark green
+    item->setGraphicsEffect(effect);
+
+    QPainter painter;
+    QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
+
+    image.fill(0);
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    scene.render(&painter);
+    painter.end();
+
+    QCOMPARE(image.pixel(10, 10), qRgb(191, 212, 169));
+
+    effect->setStrength(0.5);
+
+    image.fill(0);
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    scene.render(&painter);
+    painter.end();
+
+    QCOMPARE(image.pixel(10, 10), qRgb(156, 203, 117));
+
+    effect->setStrength(0.0);
+
+    image.fill(0);
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    scene.render(&painter);
+    painter.end();
+
+    QCOMPARE(image.pixel(10, 10), qRgb(122, 193, 66));
+}
+
+QTEST_MAIN(tst_QGraphicsEffect)
+#include "tst_qgraphicseffect.moc"
+