--- /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"
+