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 "LayerDragFixtures.h"
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#include <QDrag>
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namespace {
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// What a started drag offered: no drag loop runs offscreen.
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struct StartedDrag {
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QByteArray rows;
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QByteArray mask;
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QByteArray source;
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Qt::DropActions supported;
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Qt::DropAction preferred;
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};
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std::vector<StartedDrag> startedDrags;
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}
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// Takes libQt6Gui's place in this executable, as ProjectReplaceTests do libc's.
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Qt::DropAction QDrag::exec(Qt::DropActions supportedActions, Qt::DropAction defaultDropAction)
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{
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const QMimeData *data = mimeData();
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startedDrags.push_back({data->data(ProjectWorkspace::layerType), data->data(NativeLayerList::maskType), data->data(NativeLayerList::sourceType),
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supportedActions, defaultDropAction});
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return Qt::IgnoreAction;
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}
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Qt::DropAction QDrag::exec(Qt::DropActions supportedActions)
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{
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return exec(supportedActions, Qt::IgnoreAction);
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}
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// Presses and hovers in the list: drags start, cursors follow.
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class LayerDragGestureTests : public QObject {
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Q_OBJECT
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private slots:
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void altShowsTheClippingAndDuplicateCursors();
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void pressesArmADragThatAMoveStartsFromRowsAndThumbnails();
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void hoverOverRowsAndCtrlKeepTheCursorRight();
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void aSpentPressArmsNothingLater();
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void aMaskPressReleasedInAPopupIsOver();
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void altClicksOnAMaskThroughTheWindowChooseAndToggle();
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void anotherButtonsReleaseLeavesAMaskPress();
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};
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void LayerDragGestureTests::altShowsTheClippingAndDuplicateCursors()
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{
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const auto session = sessionWithLayers(2);
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Shown shown(*session);
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const double ratio = shown.list.devicePixelRatio();
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const QPoint strip = shown.list.cells().at(0)->mapTo(&shown.list, QPoint(200, LayerCell::rowHeight - 4));
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const QPoint body = shown.list.cells().at(0)->mapTo(&shown.list, QPoint(200, 20));
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QCOMPARE(image(shown.list.cursorFor(strip, Qt::AltModifier)), image(NativeLayerList::clippingCursor(false, ratio)));
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// The badge: a plus to create, a minus to release.
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QVERIFY(image(NativeLayerList::clippingCursor(false, 1)).pixelColor(25, 10).lightness() > 128);
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QVERIFY(image(NativeLayerList::clippingCursor(true, 1)).pixelColor(25, 10).lightness() < 128);
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session->toggleClippingMask(shown.id(0));
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QCOMPARE(image(shown.list.cursorFor(strip, Qt::AltModifier)), image(NativeLayerList::clippingCursor(true, ratio)));
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QCOMPARE(image(shown.list.cursorFor(body, Qt::AltModifier)), image(CanvasView::duplicateCursor(ratio)));
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QCOMPARE(shown.list.cursorFor(body, Qt::AltModifier | Qt::ControlModifier).shape(), Qt::ArrowCursor);
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QCOMPARE(shown.list.cursorFor(body, Qt::NoModifier).shape(), Qt::ArrowCursor);
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// Ctrl over a thumbnail loads a selection: the pointing hand.
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LayerCell &first = *shown.list.cells().at(0);
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const QPoint picture = first.mapTo(&shown.list, first.thumbnail().geometry().center());
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QCOMPARE(image(shown.list.cursorFor(picture, Qt::ControlModifier)), image(CanvasView::loadSelectionCursor(ratio)));
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QCOMPARE(image(shown.list.cursorFor(picture, Qt::ControlModifier | Qt::AltModifier)), image(CanvasView::loadSelectionCursor(ratio)));
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QCOMPARE(shown.list.cursorFor(body, Qt::ControlModifier).shape(), Qt::ArrowCursor);
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QVERIFY(image(CanvasView::loadSelectionCursor(1)).pixelColor(11, 8).lightness() > 128);
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QVERIFY(image(CanvasView::loadSelectionCursor(1)).pixelColor(21, 18).alpha() > 0);
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QCOMPARE(image(CanvasView::loadSelectionCursor(1)).pixelColor(21, 21).alpha(), 0);
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// The bottom row clips to nothing; a folder duplicates not.
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const QPoint lastStrip = shown.list.cells().at(1)->mapTo(&shown.list, QPoint(200, LayerCell::rowHeight - 4));
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QCOMPARE(shown.list.cursorFor(lastStrip, Qt::AltModifier).shape(), Qt::ArrowCursor);
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session->selectLayer(shown.id(1));
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session->addGroup();
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const QPoint folderBody = shown.list.cells().at(1)->mapTo(&shown.list, QPoint(200, 20));
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QCOMPARE(shown.list.cursorFor(folderBody, Qt::AltModifier).shape(), Qt::ArrowCursor);
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// A mask thumbnail copies, or loads with Ctrl; busy, nothing.
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session->selectLayer(shown.id(0));
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session->addLayerMask();
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LayerCell &top = *shown.list.cells().at(0);
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const QPoint mask = top.mapTo(&shown.list, top.maskThumbnail().geometry().center());
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QCOMPARE(image(shown.list.cursorFor(mask, Qt::AltModifier)), image(CanvasView::duplicateCursor(ratio)));
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QCOMPARE(image(shown.list.cursorFor(mask, Qt::ControlModifier)), image(CanvasView::loadSelectionCursor(ratio)));
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session->setIsImporting(true);
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QCOMPARE(shown.list.cursorFor(mask, Qt::AltModifier).shape(), Qt::ArrowCursor);
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QCOMPARE(shown.list.cursorFor(mask, Qt::ControlModifier).shape(), Qt::ArrowCursor);
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QCOMPARE(shown.list.cursorFor(body, Qt::AltModifier).shape(), Qt::ArrowCursor);
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session->setIsImporting(false);
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// The viewport's cursor follows the pointer with Alt held.
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QTest::keyPress(shown.list.windowHandle(), Qt::Key_Alt, Qt::AltModifier);
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QTest::mouseMove(shown.list.viewport(), shown.list.viewport()->mapFromParent(body));
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QCOMPARE(image(shown.list.viewport()->cursor()), image(CanvasView::duplicateCursor(ratio)));
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QTest::keyRelease(shown.list.windowHandle(), Qt::Key_Alt, Qt::NoModifier);
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QCOMPARE(shown.list.viewport()->cursor().shape(), Qt::ArrowCursor);
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}
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void LayerDragGestureTests::pressesArmADragThatAMoveStartsFromRowsAndThumbnails()
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{
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const auto session = sessionWithLayers(3);
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Shown shown(*session);
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startedDrags.clear();
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LayerCell &row = *shown.list.cells().at(1);
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const int far = QApplication::startDragDistance() + 2;
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const QPoint name(row.width() - 20, 20);
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// Short of the distance, no drag; past it, the row.
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QTest::mousePress(&row, Qt::LeftButton, Qt::NoModifier, name);
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QTest::mouseMove(&row, name + QPoint(2, 0));
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QCOMPARE(startedDrags.size(), size_t(0));
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QTest::mouseMove(&row, name + QPoint(far, 0));
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QCOMPARE(startedDrags.size(), size_t(1));
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QCOMPARE(startedDrags.back().rows, uuidString(shown.id(1)).toUtf8());
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QCOMPARE(startedDrags.back().source, shown.list.dragToken().toUtf8());
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QCOMPARE(startedDrags.back().supported, Qt::MoveAction | Qt::CopyAction);
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QCOMPARE(startedDrags.back().preferred, Qt::MoveAction);
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QTest::mouseRelease(&row, Qt::LeftButton, Qt::NoModifier, name + QPoint(far, 0));
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// A released press is spent: the middle button drags nothing.
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QTest::mousePress(&row, Qt::MiddleButton, Qt::NoModifier, name);
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QTest::mouseMove(&row, name + QPoint(far, 0));
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QTest::mouseRelease(&row, Qt::MiddleButton, Qt::NoModifier, name + QPoint(far, 0));
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QCOMPARE(startedDrags.size(), size_t(1));
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// Alt at the press offers a copy alone.
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QTest::mousePress(&row, Qt::LeftButton, Qt::AltModifier, name);
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QTest::mouseMove(&row, name + QPoint(far, 0));
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QCOMPARE(startedDrags.size(), size_t(2));
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QCOMPARE(startedDrags.back().supported, Qt::DropActions(Qt::CopyAction));
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QTest::mouseRelease(&row, Qt::LeftButton, Qt::AltModifier, name + QPoint(far, 0));
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// Alt on the strip clips and drags nothing.
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const QPoint strip(row.width() - 20, LayerCell::rowHeight - 4);
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QTest::mousePress(&row, Qt::LeftButton, Qt::AltModifier, strip);
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QTest::mouseMove(&row, strip + QPoint(far, 0));
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QTest::mouseRelease(&row, Qt::LeftButton, Qt::AltModifier, strip + QPoint(far, 0));
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QCOMPARE(startedDrags.size(), size_t(2));
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QVERIFY(layerWith(*session, shown.id(1)).maskSourceID.has_value());
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// Thumbnails drag their row too, plain and with Alt.
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LayerThumbnailButton &picture = shown.list.cells().at(0)->thumbnail();
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QTest::mousePress(&picture, Qt::LeftButton, Qt::NoModifier, QPoint(5, 5));
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QTest::mouseMove(&picture, QPoint(5 + far, 5));
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QTest::mouseRelease(&picture, Qt::LeftButton, Qt::NoModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(3));
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QCOMPARE(startedDrags.back().rows, uuidString(shown.id(0)).toUtf8());
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QTest::mousePress(&picture, Qt::LeftButton, Qt::AltModifier, QPoint(5, 5));
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QTest::mouseMove(&picture, QPoint(5 + far, 5));
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QTest::mouseRelease(&picture, Qt::LeftButton, Qt::AltModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(4));
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QCOMPARE(startedDrags.back().supported, Qt::DropActions(Qt::CopyAction));
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// A thumbnail click spent, the middle button drags nothing either.
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QTest::mouseClick(&picture, Qt::LeftButton, Qt::NoModifier, QPoint(5, 5));
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QTest::mousePress(&picture, Qt::MiddleButton, Qt::NoModifier, QPoint(5, 5));
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QTest::mouseMove(&picture, QPoint(5 + far, 5));
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QTest::mouseRelease(&picture, Qt::MiddleButton, Qt::NoModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(4));
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// A mask thumbnail under Alt drags its mask.
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session->selectLayer(shown.id(0));
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session->addLayerMask();
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LayerThumbnailButton &mask = shown.list.cells().at(0)->maskThumbnail();
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QTest::mousePress(&mask, Qt::LeftButton, Qt::AltModifier, QPoint(5, 5));
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QTest::mouseMove(&mask, QPoint(7, 5));
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QCOMPARE(startedDrags.size(), size_t(4));
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QTest::mouseMove(&mask, QPoint(5 + far, 5));
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QTest::mouseRelease(&mask, Qt::LeftButton, Qt::AltModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(5));
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QCOMPARE(startedDrags.back().mask, uuidString(shown.id(0)).toUtf8());
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QCOMPARE(startedDrags.back().supported, Qt::DropActions(Qt::CopyAction));
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// Busy, a press drags nothing.
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session->setIsImporting(true);
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QTest::mousePress(&row, Qt::LeftButton, Qt::NoModifier, name);
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QTest::mouseMove(&row, name + QPoint(far, 0));
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QTest::mouseRelease(&row, Qt::LeftButton, Qt::NoModifier, name + QPoint(far, 0));
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QCOMPARE(startedDrags.size(), size_t(5));
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}
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void LayerDragGestureTests::hoverOverRowsAndCtrlKeepTheCursorRight()
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{
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const auto session = sessionWithLayers(2);
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Shown shown(*session);
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const double ratio = shown.list.devicePixelRatio();
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LayerCell &row = *shown.list.cells().at(0);
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QWindow *window = shown.list.windowHandle();
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// A hover with Alt over a row's control, as reported.
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const auto hover = [](QWidget &under, QPoint at) {
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QMouseEvent move(QEvent::MouseMove, QPointF(at), under.mapToGlobal(at), Qt::NoButton, Qt::NoButton, Qt::AltModifier);
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QApplication::sendEvent(&under, &move);
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};
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// Every control of a row reports its hover.
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for (const QWidget *child : row.findChildren<QWidget *>())
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QVERIFY2(child->hasMouseTracking(), qPrintable(child->objectName()));
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QVERIFY(row.hasMouseTracking());
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QTest::keyPress(window, Qt::Key_Alt, Qt::AltModifier);
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hover(row, QPoint(200, 20));
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QCOMPARE(image(shown.list.viewport()->cursor()), image(CanvasView::duplicateCursor(ratio)));
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// Onto the strip, over the row itself: the clipping cursor.
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hover(row, QPoint(200, LayerCell::rowHeight - 4));
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QCOMPARE(image(shown.list.viewport()->cursor()), image(NativeLayerList::clippingCursor(false, ratio)));
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hover(row.thumbnail(), QPoint(5, 5));
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QCOMPARE(image(shown.list.viewport()->cursor()), image(CanvasView::duplicateCursor(ratio)));
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// Ctrl joining Alt over a thumbnail: the load cursor.
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qt_handleKeyEvent(window, QEvent::KeyPress, Qt::Key_Control, Qt::AltModifier | Qt::ControlModifier);
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QCOMPARE(image(shown.list.viewport()->cursor()), image(CanvasView::loadSelectionCursor(ratio)));
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qt_handleKeyEvent(window, QEvent::KeyRelease, Qt::Key_Control, Qt::AltModifier);
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QCOMPARE(image(shown.list.viewport()->cursor()), image(CanvasView::duplicateCursor(ratio)));
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QTest::keyRelease(shown.list.windowHandle(), Qt::Key_Alt, Qt::NoModifier);
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QCOMPARE(shown.list.viewport()->cursor().shape(), Qt::ArrowCursor);
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}
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void LayerDragGestureTests::aSpentPressArmsNothingLater()
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{
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const auto session = sessionWithLayers(3);
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Shown shown(*session);
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startedDrags.clear();
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LayerCell &row = *shown.list.cells().at(0);
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const int far = QApplication::startDragDistance() + 2;
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const QPoint name(row.width() - 20, 20), strip(row.width() - 20, LayerCell::rowHeight - 4);
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QTest::mouseClick(&row, Qt::LeftButton, Qt::NoModifier, name);
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// Presses that arm nothing: the strip, Ctrl, Shift.
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QTest::mousePress(&row, Qt::LeftButton, Qt::AltModifier, strip);
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QTest::mouseMove(&row, strip + QPoint(far, 0));
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QTest::mouseRelease(&row, Qt::LeftButton, Qt::AltModifier, strip + QPoint(far, 0));
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QCOMPARE(startedDrags.size(), size_t(0));
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QTest::mouseClick(&row, Qt::LeftButton, Qt::NoModifier, name);
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LayerThumbnailButton &picture = row.thumbnail();
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QTest::mousePress(&picture, Qt::LeftButton, Qt::ControlModifier, QPoint(5, 5));
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QTest::mouseMove(&picture, QPoint(5 + far, 5));
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QTest::mouseRelease(&picture, Qt::LeftButton, Qt::ControlModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(0));
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session->selectLayer(shown.id(0));
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session->addLayerMask();
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QTest::mouseClick(&row, Qt::LeftButton, Qt::NoModifier, name);
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LayerThumbnailButton &mask = row.maskThumbnail();
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QTest::mousePress(&mask, Qt::LeftButton, Qt::ShiftModifier, QPoint(5, 5));
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QTest::mouseMove(&mask, QPoint(5 + far, 5));
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QTest::mouseRelease(&mask, Qt::LeftButton, Qt::ShiftModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(0));
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}
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void LayerDragGestureTests::aMaskPressReleasedInAPopupIsOver()
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{
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const auto session = sessionWithLayers(2);
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Shown shown(*session);
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startedDrags.clear();
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session->selectLayer(shown.id(0));
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session->addLayerMask();
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LayerThumbnailButton &mask = shown.list.cells().at(0)->maskThumbnail();
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const int far = QApplication::startDragDistance() + 2;
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QTest::mousePress(&mask, Qt::LeftButton, Qt::AltModifier, QPoint(5, 5));
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QMenu menu;
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menu.addAction(QStringLiteral("Nothing"));
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menu.popup(shown.list.mapToGlobal(QPoint(100, 100)));
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QTRY_VERIFY(menu.isVisible());
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QTest::mouseRelease(&menu, Qt::LeftButton, Qt::NoModifier, QPoint(4, 4));
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menu.close();
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// Neither a hover nor a plain press drags the mask.
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QMouseEvent hover(QEvent::MouseMove, QPointF(5 + far, 5), mask.mapToGlobal(QPoint(5 + far, 5)), Qt::NoButton, Qt::NoButton, Qt::AltModifier);
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QApplication::sendEvent(&mask, &hover);
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QCOMPARE(startedDrags.size(), size_t(0));
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QTest::mousePress(&mask, Qt::LeftButton, Qt::NoModifier, QPoint(5, 5));
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QTest::mouseMove(&mask, QPoint(5 + far, 5));
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QTest::mouseRelease(&mask, Qt::LeftButton, Qt::NoModifier, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(1));
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QVERIFY(startedDrags.back().mask.isEmpty());
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QCOMPARE(startedDrags.back().rows, uuidString(shown.id(0)).toUtf8());
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}
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void LayerDragGestureTests::altClicksOnAMaskThroughTheWindowChooseAndToggle()
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{
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const auto session = sessionWithLayers(2);
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Shown shown(*session);
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startedDrags.clear();
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session->selectLayer(shown.id(0));
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session->addLayerMask();
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session->selectLayerTarget(shown.id(0), false);
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LayerThumbnailButton &mask = shown.list.cells().at(0)->maskThumbnail();
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const QPoint at = mask.mapTo(&shown.list, QPoint(5, 5));
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// The window sees the release first; the click still lands.
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QTest::mouseClick(shown.list.windowHandle(), Qt::LeftButton, Qt::AltModifier, at);
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QVERIFY(session->isMaskSelected());
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QVERIFY(session->activeLayer().value().mask.value().isEnabled);
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QTest::mouseClick(shown.list.windowHandle(), Qt::LeftButton, Qt::AltModifier | Qt::ShiftModifier, at);
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QVERIFY(session->isMaskSelected());
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QVERIFY(!session->activeLayer().value().mask.value().isEnabled);
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QCOMPARE(startedDrags.size(), size_t(0));
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}
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void LayerDragGestureTests::anotherButtonsReleaseLeavesAMaskPress()
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{
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const auto session = sessionWithLayers(2);
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Shown shown(*session);
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startedDrags.clear();
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session->selectLayer(shown.id(0));
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session->addLayerMask();
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session->selectLayerTarget(shown.id(0), false);
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LayerThumbnailButton &mask = shown.list.cells().at(0)->maskThumbnail();
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const int far = QApplication::startDragDistance() + 2;
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QTest::mousePress(&mask, Qt::LeftButton, Qt::AltModifier, QPoint(5, 5));
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// The middle button pressed and released chooses nothing.
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QTest::mousePress(&mask, Qt::MiddleButton, Qt::AltModifier, QPoint(5, 5));
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QTest::mouseRelease(&mask, Qt::MiddleButton, Qt::AltModifier, QPoint(5, 5));
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QVERIFY(!session->isMaskSelected());
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QTest::mouseMove(&mask, QPoint(5 + far, 5));
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QCOMPARE(startedDrags.size(), size_t(1));
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QCOMPARE(startedDrags.back().mask, uuidString(shown.id(0)).toUtf8());
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QTest::mouseRelease(&mask, Qt::LeftButton, Qt::AltModifier, QPoint(5 + far, 5));
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}
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QTEST_MAIN(LayerDragGestureTests)
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#include "LayerDragGestureTests.moc"
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