OmaPhoto 1.0.0: the Linux port of Compositor
A layered image editor for Linux and Omarchy, ported from Compositor (github.com/robbietilton/Compositor), whose Swift source is its specification. It reads and writes Compositor's .comp projects. Packages for Ubuntu, Fedora and Arch come from the release workflow; scripts/install/ holds one install script per distribution family, and flake.nix serves NixOS. Co-Authored-By: Claude <noreply@anthropic.com>
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#include "CanvasFixtures.h"
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#include <QSignalSpy>
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// The canvas: Zoom, Hand, Space, the wheel, a pinch.
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class CanvasNavigationTests : public QObject {
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Q_OBJECT
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private slots:
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void theZoomToolClicksAndDrags();
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void theHandToolAndSpaceDragTheView();
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void theWheelPansAndZoomsWithAModifier();
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void aPinchZoomsAboutThePointer();
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};
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void CanvasNavigationTests::theZoomToolClicksAndDrags()
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{
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Shown shown;
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CanvasView &canvas = *shown.canvas;
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EditorSession &session = shown.session;
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shown.settle();
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session.zoom(1);
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session.selectTool(NavigationTool::zoom);
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const QSizeF size = shown.documentSize();
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const QPointF click(120, 90);
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const QPointF under = session.viewport.documentPoint(click, size);
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QTest::mouseClick(&canvas, Qt::LeftButton, Qt::NoModifier, click.toPoint());
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QCOMPARE(session.viewport.zoom(), 2.0);
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QCOMPARE(session.viewport.documentPoint(click, size), under);
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QTest::mouseClick(&canvas, Qt::LeftButton, Qt::AltModifier, click.toPoint());
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QCOMPARE(session.viewport.zoom(), 1.0);
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// Dragging 100 points doubles about the start; release adds nothing.
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const QPointF start(260, 110);
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const QPointF anchor = session.viewport.documentPoint(start, size);
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QTest::mousePress(&canvas, Qt::LeftButton, Qt::NoModifier, start.toPoint());
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drag(canvas, QPointF(360, 110));
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QCOMPARE(session.viewport.zoom(), 2.0);
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QCOMPARE(session.viewport.documentPoint(start, size), anchor);
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drag(canvas, QPointF(310, 110));
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), std::sqrt(2.0)));
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QCOMPARE(session.viewport.documentPoint(start, size), anchor);
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QTest::mouseRelease(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(310, 110));
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), std::sqrt(2.0)));
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// Two points of drift still count as a click.
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QTest::mousePress(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(100, 100));
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drag(canvas, QPointF(102, 100));
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QTest::mouseRelease(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(102, 100));
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), 2 * std::sqrt(2.0)));
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// Busy, importing or without a document a press does nothing.
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session.setIsProjectBusy(true);
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QTest::mouseClick(&canvas, Qt::LeftButton, Qt::NoModifier, click.toPoint());
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), 2 * std::sqrt(2.0)));
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session.setIsProjectBusy(false);
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session.setIsImporting(true);
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QTest::mouseClick(&canvas, Qt::LeftButton, Qt::NoModifier, click.toPoint());
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), 2 * std::sqrt(2.0)));
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session.setIsImporting(false);
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QTest::mouseClick(&canvas, Qt::RightButton, Qt::NoModifier, click.toPoint());
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), 2 * std::sqrt(2.0)));
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Shown empty(std::nullopt);
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empty.session.selectTool(NavigationTool::zoom);
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QTest::mouseClick(empty.canvas, Qt::LeftButton, Qt::NoModifier, click.toPoint());
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QCOMPARE(empty.session.viewport.zoom(), 1.0);
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}
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void CanvasNavigationTests::theHandToolAndSpaceDragTheView()
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{
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Shown shown;
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CanvasView &canvas = *shown.canvas;
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EditorSession &session = shown.session;
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shown.settle();
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session.zoom(1);
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session.selectTool(NavigationTool::hand);
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canvas.synchronizeDisplay();
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QCOMPARE(canvas.cursor().shape(), Qt::OpenHandCursor);
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QSignalSpy changes(&session, &EditorSession::changed);
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const QSizeF pan = session.viewport.pan;
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QTest::mousePress(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(100, 100));
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QCOMPARE(canvas.cursor().shape(), Qt::ClosedHandCursor);
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drag(canvas, QPointF(130, 120));
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QCOMPARE(session.viewport.pan, pan + QSizeF(30, 20));
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QVERIFY(!session.viewport.followsFit());
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QCOMPARE(changes.count(), 1);
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drag(canvas, QPointF(135, 120));
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QCOMPARE(session.viewport.pan, pan + QSizeF(35, 20));
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QCOMPARE(changes.count(), 2);
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QTest::mouseRelease(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(135, 120));
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QCOMPARE(canvas.cursor().shape(), Qt::OpenHandCursor);
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drag(canvas, QPointF(150, 120));
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QCOMPARE(session.viewport.pan, pan + QSizeF(35, 20));
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// Space drags the view in any tool.
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session.selectTool(NavigationTool::move);
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canvas.synchronizeDisplay();
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QCOMPARE(canvas.cursor().shape(), Qt::ArrowCursor);
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QTRY_VERIFY(canvas.hasFocus());
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QTest::keyPress(&canvas, Qt::Key_Space);
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QCOMPARE(canvas.cursor().shape(), Qt::OpenHandCursor);
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QTest::mousePress(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(50, 50));
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drag(canvas, QPointF(60, 70));
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QCOMPARE(session.viewport.pan, pan + QSizeF(45, 40));
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QTest::mouseRelease(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(60, 70));
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QTest::keyRelease(&canvas, Qt::Key_Space);
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QCOMPARE(canvas.cursor().shape(), Qt::ArrowCursor);
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// Importing, a press starts no drag.
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session.selectTool(NavigationTool::hand);
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session.setIsImporting(true);
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QTest::mousePress(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(50, 50));
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drag(canvas, QPointF(90, 90));
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QCOMPARE(session.viewport.pan, pan + QSizeF(45, 40));
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QTest::mouseRelease(&canvas, Qt::LeftButton, Qt::NoModifier, QPoint(90, 90));
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}
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void CanvasNavigationTests::theWheelPansAndZoomsWithAModifier()
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{
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Shown shown;
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CanvasView &canvas = *shown.canvas;
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EditorSession &session = shown.session;
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shown.settle();
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session.zoom(1);
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const QSizeF size = shown.documentSize();
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const QPointF pointer(120, 90);
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const double lines = QApplication::wheelScrollLines();
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QSizeF pan = session.viewport.pan;
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// Pixels count as they are, and win over notches.
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wheel(canvas, pointer, QPoint(0, -30), QPoint(0, -240), Qt::NoModifier);
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pan += QSizeF(0, -30);
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QCOMPARE(session.viewport.pan, pan);
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QVERIFY(!session.viewport.followsFit());
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// A notch is a few lines, twelve points each.
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wheel(canvas, pointer, QPoint(), QPoint(0, 120), Qt::NoModifier);
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pan += QSizeF(0, 12 * lines);
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QCOMPARE(session.viewport.pan, pan);
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wheel(canvas, pointer, QPoint(), QPoint(-60, 0), Qt::NoModifier);
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pan += QSizeF(-6 * lines, 0);
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QCOMPARE(session.viewport.pan, pan);
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// Ctrl or Alt zooms about the pointer, by Swift's curve.
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const QPointF under = session.viewport.documentPoint(pointer, size);
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wheel(canvas, pointer, QPoint(), QPoint(0, 120), Qt::ControlModifier);
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), std::exp(-lines * 0.015)));
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QCOMPARE(session.viewport.documentPoint(pointer, size), under);
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wheel(canvas, pointer, QPoint(0, 10), QPoint(), Qt::AltModifier);
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QVERIFY(qFuzzyCompare(session.viewport.zoom(), std::exp(-lines * 0.015) * std::exp(-10 * 0.015)));
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QCOMPARE(session.viewport.documentPoint(pointer, size), under);
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// Without a document the wheel does nothing.
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Shown empty(std::nullopt);
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wheel(*empty.canvas, pointer, QPoint(0, -30), QPoint(), Qt::NoModifier);
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QCOMPARE(empty.session.viewport.pan, QSizeF(0, 0));
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wheel(*empty.canvas, pointer, QPoint(), QPoint(0, 120), Qt::ControlModifier);
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QCOMPARE(empty.session.viewport.zoom(), 1.0);
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}
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void CanvasNavigationTests::aPinchZoomsAboutThePointer()
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{
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Shown shown;
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shown.settle();
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shown.session.zoom(1);
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const QSizeF size = shown.documentSize();
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const QPointF pointer(120, 90);
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const QPointF under = shown.session.viewport.documentPoint(pointer, size);
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QNativeGestureEvent pinch(Qt::ZoomNativeGesture, QPointingDevice::primaryPointingDevice(), 2, pointer, pointer,
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shown.canvas->mapToGlobal(pointer.toPoint()), 0.5, QPointF());
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QVERIFY(QApplication::sendEvent(shown.canvas, &pinch));
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QCOMPARE(shown.session.viewport.zoom(), 1.5);
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QCOMPARE(shown.session.viewport.documentPoint(pointer, size), under);
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// Other gestures pass on.
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QNativeGestureEvent swipe(Qt::SwipeNativeGesture, QPointingDevice::primaryPointingDevice(), 3, pointer, pointer,
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shown.canvas->mapToGlobal(pointer.toPoint()), 0.5, QPointF());
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QApplication::sendEvent(shown.canvas, &swipe);
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QCOMPARE(shown.session.viewport.zoom(), 1.5);
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}
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QTEST_MAIN(CanvasNavigationTests)
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#include "CanvasNavigationTests.moc"
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