qt 6.5.1 original

tests/benchmarks/widgets/graphicsview/qgraphicsanchorlayout/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## tst_bench_qgraphicsanchorlayout Binary:
+#####################################################################
+
+qt_internal_add_benchmark(tst_bench_qgraphicsanchorlayout
+    SOURCES
+        tst_qgraphicsanchorlayout.cpp
+    LIBRARIES
+        Qt::Gui
+        Qt::Test
+        Qt::Widgets
+)

tests/benchmarks/widgets/graphicsview/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QTest>
+#include <QtWidgets/qgraphicsanchorlayout.h>
+#include <QtWidgets/qgraphicslinearlayout.h>
+#include <QtWidgets/qgraphicswidget.h>
+#include <QtWidgets/qgraphicsview.h>
+
+class tst_QGraphicsAnchorLayout : public QObject
+{
+    Q_OBJECT
+public:
+    tst_QGraphicsAnchorLayout() {}
+    ~tst_QGraphicsAnchorLayout() {}
+
+private slots:
+    void hard_complex_data();
+    void hard_complex();
+    void linearVsAnchorSizeHints_data();
+    void linearVsAnchorSizeHints();
+    void linearVsAnchorSetGeometry_data();
+    void linearVsAnchorSetGeometry();
+    void linearVsAnchorNested_data();
+    void linearVsAnchorNested();
+};
+
+
+class RectWidget : public QGraphicsWidget
+{
+public:
+    RectWidget(QGraphicsItem *parent = nullptr) : QGraphicsWidget(parent){}
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override
+    {
+        Q_UNUSED(option);
+        Q_UNUSED(widget);
+        painter->drawRoundedRect(rect(), 25, 25, Qt::RelativeSize);
+        painter->drawLine(rect().topLeft(), rect().bottomRight());
+        painter->drawLine(rect().bottomLeft(), rect().topRight());
+    }
+};
+
+static QGraphicsWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),
+                                   const QSizeF &preferred = QSize(150.0, 100.0),
+                                   const QSizeF &maximum = QSizeF(200.0, 100.0),
+                                   const QString &name = QString())
+{
+    QGraphicsWidget *w = new RectWidget;
+    w->setMinimumSize(minimum);
+    w->setPreferredSize(preferred);
+    w->setMaximumSize(maximum);
+    w->setData(0, name);
+    return w;
+}
+
+static void setAnchor(QGraphicsAnchorLayout *l,
+                      QGraphicsLayoutItem *firstItem,
+                      Qt::AnchorPoint firstEdge,
+                      QGraphicsLayoutItem *secondItem,
+                      Qt::AnchorPoint secondEdge,
+                      qreal spacing)
+{
+    QGraphicsAnchor *anchor = l->addAnchor(firstItem, firstEdge, secondItem, secondEdge);
+    anchor->setSpacing(spacing);
+}
+
+void tst_QGraphicsAnchorLayout::hard_complex_data()
+{
+    QTest::addColumn<int>("whichSizeHint");
+    QTest::newRow("minimumSizeHint")
+        << int(Qt::MinimumSize);
+    QTest::newRow("preferredSizeHint")
+        << int(Qt::PreferredSize);
+    QTest::newRow("maximumSizeHint")
+        << int(Qt::MaximumSize);
+    // Add it as a reference to see how much overhead the body of effectiveSizeHint takes.
+    QTest::newRow("noSizeHint")
+        << -1;
+}
+
+void tst_QGraphicsAnchorLayout::hard_complex()
+{
+    QFETCH(int, whichSizeHint);
+
+    // Test for "hard" complex case, taken from wiki
+    // https://cwiki.nokia.com/S60QTUI/AnchorLayoutComplexCases
+    QSizeF min(0, 10);
+    QSizeF pref(50, 10);
+    QSizeF max(100, 10);
+
+    QGraphicsWidget *a = createItem(min, pref, max, "a");
+    QGraphicsWidget *b = createItem(min, pref, max, "b");
+    QGraphicsWidget *c = createItem(min, pref, max, "c");
+    QGraphicsWidget *d = createItem(min, pref, max, "d");
+    QGraphicsWidget *e = createItem(min, pref, max, "e");
+    QGraphicsWidget *f = createItem(min, pref, max, "f");
+    QGraphicsWidget *g = createItem(min, pref, max, "g");
+
+    QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
+    l->setContentsMargins(0, 0, 0, 0);
+
+    //<!-- Trunk -->
+    setAnchor(l, l, Qt::AnchorLeft, a, Qt::AnchorLeft, 10);
+    setAnchor(l, a, Qt::AnchorRight, b, Qt::AnchorLeft, 10);
+    setAnchor(l, b, Qt::AnchorRight, c, Qt::AnchorLeft, 10);
+    setAnchor(l, c, Qt::AnchorRight, d, Qt::AnchorLeft, 10);
+    setAnchor(l, d, Qt::AnchorRight, l, Qt::AnchorRight, 10);
+
+    //<!-- Above trunk -->
+    setAnchor(l, b, Qt::AnchorLeft, e, Qt::AnchorLeft, 10);
+    setAnchor(l, e, Qt::AnchorRight, d, Qt::AnchorLeft, 10);
+
+    //<!-- Below trunk -->
+    setAnchor(l, a, Qt::AnchorHorizontalCenter, g, Qt::AnchorLeft, 10);
+    setAnchor(l, g, Qt::AnchorRight, f, Qt::AnchorHorizontalCenter, 10);
+    setAnchor(l, c, Qt::AnchorLeft, f, Qt::AnchorLeft, 10);
+    setAnchor(l, f, Qt::AnchorRight, d, Qt::AnchorRight, 10);
+
+    //<!-- vertical is simpler -->
+    setAnchor(l, l, Qt::AnchorTop, e, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, a, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, b, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, c, Qt::AnchorTop, 0);
+    setAnchor(l, e, Qt::AnchorBottom, d, Qt::AnchorTop, 0);
+    setAnchor(l, a, Qt::AnchorBottom, f, Qt::AnchorTop, 0);
+    setAnchor(l, a, Qt::AnchorBottom, b, Qt::AnchorBottom, 0);
+    setAnchor(l, a, Qt::AnchorBottom, c, Qt::AnchorBottom, 0);
+    setAnchor(l, a, Qt::AnchorBottom, d, Qt::AnchorBottom, 0);
+    setAnchor(l, f, Qt::AnchorBottom, g, Qt::AnchorTop, 0);
+    setAnchor(l, g, Qt::AnchorBottom, l, Qt::AnchorBottom, 0);
+
+    // It won't query the size hint if it already has a size set.
+    // If only one of the sizes is unset it will query sizeHint only of for that hint type.
+    l->setMinimumSize(60,40);
+    l->setPreferredSize(220,40);
+    l->setMaximumSize(240,40);
+
+    switch (whichSizeHint) {
+    case Qt::MinimumSize:
+        l->setMinimumSize(-1, -1);
+        break;
+    case Qt::PreferredSize:
+        l->setPreferredSize(-1, -1);
+        break;
+    case Qt::MaximumSize:
+        l->setMaximumSize(-1, -1);
+        break;
+    default:
+        break;
+    }
+
+    QSizeF sizeHint;
+    // warm up instruction cache
+    l->invalidate();
+    sizeHint = l->effectiveSizeHint((Qt::SizeHint)whichSizeHint);
+    // ...then measure...
+    QBENCHMARK {
+        l->invalidate();
+        sizeHint = l->effectiveSizeHint((Qt::SizeHint)whichSizeHint);
+    }
+}
+
+static QGraphicsLayout* createLayouts(int whichLayout)
+{
+    QSizeF min(0, 10);
+    QSizeF pref(50, 10);
+    QSizeF max(100, 10);
+
+    QGraphicsWidget *a = createItem(min, pref, max, "a");
+    QGraphicsWidget *b = createItem(min, pref, max, "b");
+    QGraphicsWidget *c = createItem(min, pref, max, "c");
+    QGraphicsWidget *d = createItem(min, pref, max, "d");
+
+    QGraphicsLayout *l;
+    if (whichLayout == 0) {
+        l = new QGraphicsLinearLayout;
+        QGraphicsLinearLayout *linear = static_cast<QGraphicsLinearLayout *>(l);
+        linear->setContentsMargins(0, 0, 0, 0);
+
+        linear->addItem(a);
+        linear->addItem(b);
+        linear->addItem(c);
+        linear->addItem(d);
+    } else {
+        l = new QGraphicsAnchorLayout;
+        QGraphicsAnchorLayout *anchor = static_cast<QGraphicsAnchorLayout *>(l);
+        anchor->setContentsMargins(0, 0, 0, 0);
+
+        // Horizontal
+        setAnchor(anchor, anchor, Qt::AnchorLeft, a, Qt::AnchorLeft, 0);
+        setAnchor(anchor, a, Qt::AnchorRight, b, Qt::AnchorLeft, 0);
+        setAnchor(anchor, b, Qt::AnchorRight, c, Qt::AnchorLeft, 0);
+        setAnchor(anchor, c, Qt::AnchorRight, d, Qt::AnchorLeft, 0);
+        setAnchor(anchor, d, Qt::AnchorRight, anchor, Qt::AnchorRight, 0);
+
+        // Vertical
+        anchor->addAnchors(anchor, a, Qt::Vertical);
+        anchor->addAnchors(anchor, b, Qt::Vertical);
+        anchor->addAnchors(anchor, c, Qt::Vertical);
+        anchor->addAnchors(anchor, d, Qt::Vertical);
+    }
+
+    return l;
+}
+
+void tst_QGraphicsAnchorLayout::linearVsAnchorSizeHints_data()
+{
+    QTest::addColumn<int>("whichLayout");
+    QTest::addColumn<int>("whichSizeHint");
+
+    QTest::newRow("QGraphicsLinearLayout::minimum")
+        << 0 << int(Qt::MinimumSize);
+    QTest::newRow("QGraphicsLinearLayout::preferred")
+        << 0 << int(Qt::PreferredSize);
+    QTest::newRow("QGraphicsLinearLayout::maximum")
+        << 0 << int(Qt::MaximumSize);
+    QTest::newRow("QGraphicsLinearLayout::noSizeHint")
+        << 0 << -1;
+
+    QTest::newRow("QGraphicsAnchorLayout::minimum")
+        << 1 << int(Qt::MinimumSize);
+    QTest::newRow("QGraphicsAnchorLayout::preferred")
+        << 1 << int(Qt::PreferredSize);
+    QTest::newRow("QGraphicsAnchorLayout::maximum")
+        << 1 << int(Qt::MaximumSize);
+    QTest::newRow("QGraphicsAnchorLayout::noSizeHint")
+        << 1 << -1;
+}
+
+void tst_QGraphicsAnchorLayout::linearVsAnchorSizeHints()
+{
+    QFETCH(int, whichSizeHint);
+    QFETCH(int, whichLayout);
+
+    QGraphicsLayout *l = createLayouts(whichLayout);
+
+    QSizeF sizeHint;
+    // warm up instruction cache
+    l->invalidate();
+    sizeHint = l->effectiveSizeHint((Qt::SizeHint)whichSizeHint);
+    // ...then measure...
+
+    QBENCHMARK {
+        l->invalidate();
+        sizeHint = l->effectiveSizeHint((Qt::SizeHint)whichSizeHint);
+    }
+}
+
+void tst_QGraphicsAnchorLayout::linearVsAnchorSetGeometry_data()
+{
+    QTest::addColumn<int>("whichLayout");
+
+    QTest::newRow("QGraphicsLinearLayout")
+        << 0;
+    QTest::newRow("QGraphicsAnchorLayout")
+        << 1;
+}
+
+void tst_QGraphicsAnchorLayout::linearVsAnchorSetGeometry()
+{
+    QFETCH(int, whichLayout);
+
+    QGraphicsLayout *l = createLayouts(whichLayout);
+
+    QRectF sizeHint;
+    qreal maxWidth;
+    qreal increment;
+    // warm up instruction cache
+    l->invalidate();
+    sizeHint.setSize(l->effectiveSizeHint(Qt::MinimumSize));
+    maxWidth = l->effectiveSizeHint(Qt::MaximumSize).width();
+    increment = (maxWidth - sizeHint.width()) / 100;
+    l->setGeometry(sizeHint);
+    // ...then measure...
+
+    QBENCHMARK {
+        l->invalidate();
+        for (qreal width = sizeHint.width(); width <= maxWidth; width += increment) {
+            sizeHint.setWidth(width);
+            l->setGeometry(sizeHint);
+        }
+    }
+}
+
+void tst_QGraphicsAnchorLayout::linearVsAnchorNested_data()
+{
+    QTest::addColumn<int>("whichLayout");
+    QTest::newRow("LinearLayout")
+        << 0;
+    QTest::newRow("AnchorLayout setup with null-anchors knot")
+        << 1;
+    QTest::newRow("AnchorLayout setup easy to simplificate")
+        << 2;
+}
+
+void tst_QGraphicsAnchorLayout::linearVsAnchorNested()
+{
+    QFETCH(int, whichLayout);
+
+    QSizeF min(10, 10);
+    QSizeF pref(80, 80);
+    QSizeF max(150, 150);
+
+    QGraphicsWidget *a = createItem(min, pref, max, "a");
+    QGraphicsWidget *b = createItem(min, pref, max, "b");
+    QGraphicsWidget *c = createItem(min, pref, max, "c");
+    QGraphicsWidget *d = createItem(min, pref, max, "d");
+
+    QGraphicsLayout *layout;
+
+    if (whichLayout == 0) {
+        QGraphicsLinearLayout *linear1 = new QGraphicsLinearLayout;
+        QGraphicsLinearLayout *linear2 = new QGraphicsLinearLayout(Qt::Vertical);
+        QGraphicsLinearLayout *linear3 = new QGraphicsLinearLayout;
+
+        linear1->addItem(a);
+        linear1->addItem(linear2);
+        linear2->addItem(b);
+        linear2->addItem(linear3);
+        linear3->addItem(c);
+        linear3->addItem(d);
+
+        layout = linear1;
+    } else if (whichLayout == 1) {
+        QGraphicsAnchorLayout *anchor = new QGraphicsAnchorLayout;
+
+        // A
+        anchor->addCornerAnchors(a, Qt::TopLeftCorner, anchor, Qt::TopLeftCorner);
+        anchor->addCornerAnchors(a, Qt::TopRightCorner, b, Qt::TopLeftCorner);
+        anchor->addCornerAnchors(a, Qt::BottomLeftCorner, anchor, Qt::BottomLeftCorner);
+        anchor->addCornerAnchors(a, Qt::BottomRightCorner, c, Qt::BottomLeftCorner);
+
+        // B
+        anchor->addCornerAnchors(b, Qt::TopRightCorner, anchor, Qt::TopRightCorner);
+        anchor->addCornerAnchors(b, Qt::BottomLeftCorner, c, Qt::TopLeftCorner);
+        anchor->addCornerAnchors(b, Qt::BottomRightCorner, d, Qt::TopRightCorner);
+
+        // C
+        anchor->addCornerAnchors(c, Qt::TopRightCorner, d, Qt::TopLeftCorner);
+        anchor->addCornerAnchors(c, Qt::BottomRightCorner, d, Qt::BottomLeftCorner);
+
+        // D
+        anchor->addCornerAnchors(d, Qt::BottomRightCorner, anchor, Qt::BottomRightCorner);
+
+        layout = anchor;
+    } else {
+        QGraphicsAnchorLayout *anchor = new QGraphicsAnchorLayout;
+
+        // A
+        anchor->addAnchor(a, Qt::AnchorLeft, anchor, Qt::AnchorLeft);
+        anchor->addAnchors(a, anchor, Qt::Vertical);
+        anchor->addAnchor(a, Qt::AnchorRight, b, Qt::AnchorLeft);
+        anchor->addAnchor(a, Qt::AnchorRight, c, Qt::AnchorLeft);
+
+        // B
+        anchor->addAnchor(b, Qt::AnchorTop, anchor, Qt::AnchorTop);
+        anchor->addAnchor(b, Qt::AnchorRight, anchor, Qt::AnchorRight);
+        anchor->addAnchor(b, Qt::AnchorBottom, c, Qt::AnchorTop);
+        anchor->addAnchor(b, Qt::AnchorBottom, d, Qt::AnchorTop);
+
+        // C
+        anchor->addAnchor(c, Qt::AnchorRight, d, Qt::AnchorLeft);
+        anchor->addAnchor(c, Qt::AnchorBottom, anchor, Qt::AnchorBottom);
+
+        // D
+        anchor->addAnchor(d, Qt::AnchorRight, anchor, Qt::AnchorRight);
+        anchor->addAnchor(d, Qt::AnchorBottom, anchor, Qt::AnchorBottom);
+
+        layout = anchor;
+    }
+
+    QSizeF sizeHint;
+    // warm up instruction cache
+    layout->invalidate();
+    sizeHint = layout->effectiveSizeHint(Qt::PreferredSize);
+
+    // ...then measure...
+    QBENCHMARK {
+        // To ensure that all sizeHints caches are invalidated in
+        // the LinearLayout setup, we must call updateGeometry on the
+        // children. If we didn't, only the top level layout would be
+        // re-calculated.
+        static_cast<QGraphicsLayoutItem *>(a)->updateGeometry();
+        static_cast<QGraphicsLayoutItem *>(b)->updateGeometry();
+        static_cast<QGraphicsLayoutItem *>(c)->updateGeometry();
+        static_cast<QGraphicsLayoutItem *>(d)->updateGeometry();
+        layout->invalidate();
+        sizeHint = layout->effectiveSizeHint(Qt::PreferredSize);
+    }
+}
+
+QTEST_MAIN(tst_QGraphicsAnchorLayout)
+
+#include "tst_qgraphicsanchorlayout.moc"