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 "AddressSpaceLimit.h"
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#include "RenderFixtures.h"
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#include "SelectionFixtures.h"
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// The Marquee's boxes and thumbnails loaded as selections.
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namespace {
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void marquee(EditorSession &session, QPointF start, QPointF end, SelectionMode mode = SelectionMode::replace, bool square = false, bool fromCenter = false)
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{
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session.beginLasso(start, mode);
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session.dragMarquee(end, square, fromCenter);
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session.finishLasso();
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}
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// A mask: a black square with a white hole.
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QUuid maskedLayer(EditorSession &session)
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{
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const QUuid id = session.activeLayerID().value();
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QImage mask = BrushRaster::context(100, 100, true);
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mask.fill(Qt::white);
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QPainter painter(&mask);
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painter.fillRect(QRect(20, 30, 40, 40), Qt::black);
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painter.fillRect(QRect(30, 40, 10, 10), Qt::white);
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painter.end();
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rewrite(session, [&](ProjectSnapshot &snapshot) { setMask(snapshot, id, LayerMask::assetFrom(mask)); });
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return id;
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}
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}
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class SelectionSourceTests : public QObject {
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Q_OBJECT
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private slots:
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void marqueeDrawsWholePixelRectanglesInAnyDirection();
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void marqueeShiftMakesSquaresAndCenteredDragsGrowFromTheAnchor();
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void marqueeEllipseSelectsAnOvalInItsBoxAndShiftMakesACircle();
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void ctrlClickingAMaskSelectsItsBlackAreas();
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void maskSelectionFollowsTheLayerTransformAndIgnoresAllWhiteMasks();
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void ctrlClickingALayerSelectsItsOpaquePixels();
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void paintedPixelsThatCannotFlattenLoadNothing();
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};
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void SelectionSourceTests::marqueeDrawsWholePixelRectanglesInAnyDirection()
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{
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const auto session = selectionSession();
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session->selectTool(NavigationTool::marquee);
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marquee(*session, QPointF(60.4, 70.6), QPointF(20.2, 30.3));
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QCOMPARE(session->history.undoName(), QString("Rectangular Marquee"));
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QCOMPARE(bounds(*session), QRectF(20, 30, 40, 41));
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QCOMPARE(coverage(*session, 20, 30), 255);
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QCOMPARE(coverage(*session, 19, 30), 0);
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marquee(*session, QPointF(80, 80), QPointF(90, 90), SelectionMode::add);
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QCOMPARE(coverage(*session, 85, 85), 255);
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QCOMPARE(coverage(*session, 40, 50), 255);
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marquee(*session, QPointF(30, 40), QPointF(50, 60), SelectionMode::subtract);
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QCOMPARE(coverage(*session, 40, 50), 0);
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QCOMPARE(coverage(*session, 25, 35), 255);
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// A click deselects; a wild drag point is ignored.
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session->beginLasso(QPointF(5, 5), SelectionMode::replace);
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session->dragMarquee(QPointF(std::nan(""), 5), false, false);
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QCOMPARE(session->lassoDraft().value().points.size(), size_t(1));
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session->finishLasso();
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QVERIFY(!session->selection().has_value());
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// A lasso draft takes no marquee drag.
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session->selectTool(NavigationTool::lasso);
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session->beginLasso(QPointF(5, 5), SelectionMode::replace);
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session->dragMarquee(QPointF(50, 50), false, false);
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QCOMPARE(session->lassoDraft().value().points.size(), size_t(1));
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QVERIFY(!session->lassoDraft().value().anchor.has_value());
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session->cancelLasso();
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}
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void SelectionSourceTests::marqueeShiftMakesSquaresAndCenteredDragsGrowFromTheAnchor()
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{
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const auto session = selectionSession();
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session->selectTool(NavigationTool::marquee);
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marquee(*session, QPointF(10, 10), QPointF(40, 20), SelectionMode::replace, true);
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QCOMPARE(bounds(*session), QRectF(10, 10, 30, 30));
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marquee(*session, QPointF(50, 50), QPointF(60, 55), SelectionMode::replace, false, true);
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QCOMPARE(bounds(*session), QRectF(40, 45, 20, 10));
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marquee(*session, QPointF(50, 50), QPointF(45, 58), SelectionMode::replace, true, true);
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QCOMPARE(bounds(*session), QRectF(42, 42, 16, 16));
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QVERIFY(isSelectionTool(NavigationTool::marquee) && !isSelectionTool(NavigationTool::brush));
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// The anchor rounds; the box follows the drag's sign.
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QCOMPARE(DragBox::rect(QPointF(10, 10), QPointF(3.4, 15.6), false, false), QRectF(3, 10, 7, 6));
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QCOMPARE(DragBox::rect(QPointF(10, 10), QPointF(3, 16), true, false), QRectF(3, 10, 7, 7));
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}
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void SelectionSourceTests::marqueeEllipseSelectsAnOvalInItsBoxAndShiftMakesACircle()
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{
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const auto session = selectionSession();
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session->selectTool(NavigationTool::marquee);
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session->toggleMarqueeKind();
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QVERIFY(session->marqueeKind() == LassoKind::ellipse);
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session->beginLasso(QPointF(10, 20), SelectionMode::replace);
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session->dragMarquee(QPointF(70, 60), false, false);
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session->finishLasso();
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QCOMPARE(session->history.undoName(), QString("Elliptical Marquee"));
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const QRectF box = bounds(*session);
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QVERIFY(std::abs(box.left() - 10) < 0.5 && std::abs(box.right() - 70) < 0.5 && std::abs(box.top() - 20) < 0.5 && std::abs(box.bottom() - 60) < 0.5);
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QCOMPARE(coverage(*session, 40, 40), 255);
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// The box's corner lies outside the oval.
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QCOMPARE(coverage(*session, 11, 21), 0);
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session->beginLasso(QPointF(5, 5), SelectionMode::replace);
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session->dragMarquee(QPointF(45, 25), true, false);
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session->finishLasso();
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const QRectF circle = bounds(*session);
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QVERIFY(std::abs(circle.width() - circle.height()) < 0.5);
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// A click with the ellipse deselects too.
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marquee(*session, QPointF(5, 5), QPointF(5, 5));
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QVERIFY(!session->selection().has_value());
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session->beginLasso(QPointF(1, 1), SelectionMode::replace);
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session->toggleMarqueeKind();
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QVERIFY(session->marqueeKind() == LassoKind::rectangle && !session->lassoDraft().has_value());
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}
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void SelectionSourceTests::ctrlClickingAMaskSelectsItsBlackAreas()
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{
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const auto session = selectionSession();
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const QUuid id = maskedLayer(*session);
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session->loadMaskSelection(id);
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QCOMPARE(session->history.undoName(), QString("Load Mask Selection"));
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// Black is selected; the white hole and surroundings are not.
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QCOMPARE(coverage(*session, 25, 35), 255);
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QCOMPARE(coverage(*session, 35, 45), 0);
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QCOMPARE(coverage(*session, 80, 80), 0);
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// Exact pixel edges.
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QCOMPARE(coverage(*session, 59, 69), 255);
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QCOMPARE(coverage(*session, 60, 70), 0);
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// Shift adds and Alt subtracts.
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lasso(*session, square(80, 80, 10));
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session->loadMaskSelection(id, SelectionMode::add);
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QCOMPARE(coverage(*session, 85, 85), 255);
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QCOMPARE(coverage(*session, 25, 35), 255);
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session->loadMaskSelection(id, SelectionMode::subtract);
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QCOMPARE(coverage(*session, 85, 85), 255);
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QCOMPARE(coverage(*session, 25, 35), 0);
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// An unknown layer, or one without a mask, loads nothing.
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const int count = session->history.undoCount();
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EditorSession empty;
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empty.loadMaskSelection(id);
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empty.loadLayerSelection(id);
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QVERIFY(!empty.document().has_value());
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session->loadMaskSelection(QUuid::createUuid());
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session->addBlankLayer();
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session->loadMaskSelection(session->activeLayerID().value());
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QCOMPARE(session->history.undoCount(), count + 1);
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}
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void SelectionSourceTests::maskSelectionFollowsTheLayerTransformAndIgnoresAllWhiteMasks()
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{
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const auto session = selectionSession(200, 200);
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const QUuid id = maskedLayer(*session);
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// The layer and its mask stretched 2× from the origin.
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rewrite(*session, [&](ProjectSnapshot &snapshot) {
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record(snapshot, id).transform.origin = QPointF(0, 0);
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record(snapshot, id).transform.size = QSizeF(200, 200);
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});
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session->loadMaskSelection(id);
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QCOMPARE(bounds(*session), QRectF(40, 60, 80, 80));
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// A mask placed apart loads where it shows.
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rewrite(*session, [&](ProjectSnapshot &snapshot) {
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record(snapshot, id).maskPlacement = LayerTransform{.origin = {10, 0}, .size = {100, 100}};
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record(snapshot, id).maskLinked = false;
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});
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session->loadMaskSelection(id);
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QCOMPARE(bounds(*session), QRectF(30, 30, 40, 40));
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session->deselect();
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session->addBlankLayer();
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session->addLayerMask(true);
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// No black anywhere: nothing to select.
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session->loadMaskSelection(session->activeLayerID().value());
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QVERIFY(!session->selection().has_value());
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}
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void SelectionSourceTests::ctrlClickingALayerSelectsItsOpaquePixels()
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{
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const auto session = selectionSession(200, 200);
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// An opaque ring, a clear centre, a faint corner pixel.
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QImage image = BrushRaster::context(50, 50, false);
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QPainter painter(&image);
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painter.fillRect(QRect(10, 10, 30, 30), Qt::red);
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painter.setCompositionMode(QPainter::CompositionMode_Source);
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painter.fillRect(QRect(20, 20, 10, 10), Qt::transparent);
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painter.fillRect(QRect(0, 0, 1, 1), QColor(255, 0, 0, 64));
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painter.end();
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session->insert(ImportedImage(image, image, "Ring"));
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const QUuid id = session->activeLayerID().value();
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rewrite(*session, [&](ProjectSnapshot &snapshot) {
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record(snapshot, id).transform.origin = QPointF(50, 50);
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record(snapshot, id).transform.size = QSizeF(100, 100);
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});
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session->loadLayerSelection(id);
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QCOMPARE(session->history.undoName(), QString("Load Layer Selection"));
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// Twice the size: the ring's box doubles.
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QCOMPARE(bounds(*session), QRectF(70, 70, 60, 60));
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QCOMPARE(coverage(*session, 75, 75), 255);
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QCOMPARE(coverage(*session, 100, 100), 0);
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// The 25% pixel is under the threshold.
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QCOMPARE(coverage(*session, 50, 50), 0);
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lasso(*session, square(0, 0, 20));
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session->loadLayerSelection(id, SelectionMode::add);
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QCOMPARE(coverage(*session, 10, 10), 255);
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QCOMPARE(coverage(*session, 75, 75), 255);
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// An empty layer selects nothing; nor does a folder.
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session->addBlankLayer();
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const std::optional<DocumentSelection> before = session->selection();
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session->loadLayerSelection(session->activeLayerID().value());
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QVERIFY(session->selection() == before);
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session->addGroup();
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session->loadLayerSelection(session->activeLayerID().value());
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QVERIFY(session->selection() == before);
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session->loadLayerSelection(QUuid::createUuid());
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QVERIFY(session->selection() == before);
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}
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void SelectionSourceTests::paintedPixelsThatCannotFlattenLoadNothing()
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{
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// Two painted bases flatten on first use.
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const auto session = selectionSession(4000, 3000);
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const auto pixels = std::make_shared<const RasterSnapshot>(4000, 3000, solid(2, 2, qRgba(255, 0, 0, 255)), QRectF(0, 0, 2, 2), std::vector<BrushPatch>{});
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session->insert(ImportedImage(pixels, QImage(), "Painted"));
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const QUuid id = session->activeLayerID().value();
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QImage gray(2, 2, QImage::Format_Grayscale8);
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gray.fill(Qt::black);
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const auto mask = std::make_shared<const RasterSnapshot>(4000, 3000, gray, QRectF(0, 0, 2, 2), std::vector<BrushPatch>{}, true);
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rewrite(*session, [&](ProjectSnapshot &snapshot) { setMask(snapshot, id, ImportedImage(mask, gray, "Mask")); });
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const int count = session->history.undoCount();
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{
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const AddressSpaceLimit limit(8 * 1024 * 1024);
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session->loadLayerSelection(id);
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session->loadMaskSelection(id);
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}
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QVERIFY(!session->selection().has_value());
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QCOMPARE(session->history.undoCount(), count);
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QVERIFY(!pixels->hasMaterializedPixels() && !mask->hasMaterializedPixels());
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// With room, the mask loads: its black base, white around.
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session->loadMaskSelection(id);
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QCOMPARE(bounds(*session), QRectF(0, 0, 2, 2));
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}
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QTEST_GUILESS_MAIN(SelectionSourceTests)
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#include "SelectionSourceTests.moc"
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