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 "Document/EditorSession.h"
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#include <QtTest>
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namespace {
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const LayerTransform transform{.origin = {0, 0}, .size = {10, 10}};
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ProjectLayerRecord record(const QString &name, std::optional<QUuid> parent = std::nullopt, bool isGroup = false,
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bool isVisible = true)
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{
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return {.id = QUuid::createUuid(), .name = name, .isVisible = isVisible, .transform = transform,
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.imageFile = isGroup ? std::nullopt : std::optional<QString>(name + ".png"),
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.parentID = parent, .isGroup = isGroup, .opacity = std::nullopt, .blendMode = std::nullopt};
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}
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QStringList names(const std::vector<LayerHierarchy::Entry> &entries)
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{
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QStringList result;
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for (const LayerHierarchy::Entry &entry : entries)
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result << QString("%1:%2:%3").arg(entry.layer.name).arg(entry.depth).arg(entry.visible ? "shown" : "hidden");
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return result;
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}
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bool isInvalid(const std::vector<ProjectLayerRecord> &layers)
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{
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try {
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LayerHierarchy::validate(layers);
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} catch (const ProjectError &error) {
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return error.kind == ProjectError::Kind::invalid;
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}
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return false;
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}
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// A chain of nested folders, outermost first.
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std::vector<ProjectLayerRecord> chain(int count)
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{
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std::vector<ProjectLayerRecord> layers;
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for (int index = 0; index < count; ++index)
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layers.push_back(record(QString::number(index), index == 0 ? std::nullopt : std::optional(layers.back().id), true));
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return layers;
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}
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}
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class GroupTests : public QObject {
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Q_OBJECT
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private slots:
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void malformedParentLinksAndCyclesAreRejected();
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void duplicateIdsAndFoldersWithPixelsAreRejected();
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void nestingStopsAtSixtyFourLevels();
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void entriesWalkFoldersBottomToTop();
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void topFirstReversesEveryLevel();
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void collapsedFoldersHideTheirContents();
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void hiddenParentOverridesChildren();
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void anAbsentFolderFlagMeansALeaf();
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void entriesStopBelowSixtyFourLevels();
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void documentHierarchyFollowsItsLayers();
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void hierarchyRecordNamesFilesLikeTheMacApp();
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void projectErrorsCarryTheirMessages();
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};
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void GroupTests::malformedParentLinksAndCyclesAreRejected()
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{
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ProjectLayerRecord group = record("Group", std::nullopt, true);
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ProjectLayerRecord nested = record("Nested", group.id, true);
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LayerHierarchy::validate({group, nested});
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group.parentID = nested.id;
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QVERIFY(isInvalid({group, nested}));
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QVERIFY(isInvalid({group}));
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ProjectLayerRecord rasterParent = group;
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rasterParent.parentID = std::nullopt;
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rasterParent.isGroup = false;
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QVERIFY(isInvalid({rasterParent, nested}));
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rasterParent.isGroup = std::nullopt;
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QVERIFY(isInvalid({rasterParent, nested}));
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ProjectLayerRecord selfParent = record("Loop", std::nullopt, true);
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selfParent.parentID = selfParent.id;
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QVERIFY(isInvalid({selfParent}));
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}
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void GroupTests::duplicateIdsAndFoldersWithPixelsAreRejected()
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{
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const ProjectLayerRecord layer = record("Layer");
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LayerHierarchy::validate({layer, record("Other")});
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QVERIFY(isInvalid({layer, layer}));
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ProjectLayerRecord folder = record("Folder", std::nullopt, true);
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LayerHierarchy::validate({folder});
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folder.imageFile = "Folder.png";
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QVERIFY(isInvalid({folder}));
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}
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void GroupTests::nestingStopsAtSixtyFourLevels()
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{
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const std::vector<ProjectLayerRecord> folders = chain(64);
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LayerHierarchy::validate(folders);
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std::vector<ProjectLayerRecord> withLeaf = folders;
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withLeaf.push_back(record("Leaf", folders[63].id));
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LayerHierarchy::validate(withLeaf);
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std::vector<ProjectLayerRecord> withFolder = folders;
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withFolder.push_back(record("Folder", folders[63].id, true));
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QVERIFY(isInvalid(withFolder));
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}
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void GroupTests::entriesWalkFoldersBottomToTop()
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{
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const ProjectLayerRecord bottom = record("Bottom");
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const ProjectLayerRecord folder = record("Folder", std::nullopt, true);
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const ProjectLayerRecord inner = record("Inner", folder.id, true);
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const ProjectLayerRecord deep = record("Deep", inner.id);
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const ProjectLayerRecord child = record("Child", folder.id);
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const ProjectLayerRecord top = record("Top");
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const auto entries = LayerHierarchy::entries({bottom, deep, folder, child, inner, top});
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QCOMPARE(names(entries), QStringList({"Bottom:0:shown", "Folder:0:shown", "Child:1:shown", "Inner:1:shown",
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"Deep:2:shown", "Top:0:shown"}));
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QCOMPARE(entries[4].layer.id, deep.id);
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const ProjectLayerRecord raster = record("Raster");
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QCOMPARE(names(LayerHierarchy::entries({raster, record("Stray", raster.id)})), QStringList({"Raster:0:shown"}));
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}
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void GroupTests::topFirstReversesEveryLevel()
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{
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const ProjectLayerRecord bottom = record("Bottom");
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const ProjectLayerRecord folder = record("Folder", std::nullopt, true);
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const ProjectLayerRecord low = record("Low", folder.id);
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const ProjectLayerRecord high = record("High", folder.id);
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const ProjectLayerRecord top = record("Top");
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QCOMPARE(names(LayerHierarchy::entries({bottom, folder, low, high, top}, true)),
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QStringList({"Top:0:shown", "Folder:0:shown", "High:1:shown", "Low:1:shown", "Bottom:0:shown"}));
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}
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void GroupTests::collapsedFoldersHideTheirContents()
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{
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const ProjectLayerRecord folder = record("Folder", std::nullopt, true);
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const ProjectLayerRecord child = record("Child", folder.id);
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const ProjectLayerRecord other = record("Other", std::nullopt, true);
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const ProjectLayerRecord kept = record("Kept", other.id);
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QCOMPARE(names(LayerHierarchy::entries({folder, child, other, kept}, false, {folder.id})),
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QStringList({"Folder:0:shown", "Other:0:shown", "Kept:1:shown"}));
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const ProjectLayerRecord outer = record("Outer", std::nullopt, true);
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const ProjectLayerRecord inner = record("Inner", outer.id, true);
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const ProjectLayerRecord deep = record("Deep", inner.id);
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const ProjectLayerRecord sibling = record("Sibling", outer.id);
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const ProjectLayerRecord empty = record("Empty", std::nullopt, true);
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QCOMPARE(names(LayerHierarchy::entries({outer, inner, deep, sibling, empty}, false, {inner.id})),
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QStringList({"Outer:0:shown", "Inner:1:shown", "Sibling:1:shown", "Empty:0:shown"}));
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QCOMPARE(names(LayerHierarchy::entries({outer, inner, deep, sibling, empty})),
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QStringList({"Outer:0:shown", "Inner:1:shown", "Deep:2:shown", "Sibling:1:shown", "Empty:0:shown"}));
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}
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void GroupTests::hiddenParentOverridesChildren()
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{
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const ProjectLayerRecord folder = record("Folder", std::nullopt, true, false);
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const ProjectLayerRecord inner = record("Inner", folder.id, true);
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const ProjectLayerRecord deep = record("Deep", inner.id);
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const ProjectLayerRecord hidden = record("Hidden", std::nullopt, false, false);
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const ProjectLayerRecord shown = record("Shown");
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const std::vector<ProjectLayerRecord> layers{folder, inner, deep, hidden, shown};
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const auto entries = LayerHierarchy::entries(layers);
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QCOMPARE(names(entries), QStringList({"Folder:0:hidden", "Inner:1:hidden", "Deep:2:hidden", "Hidden:0:hidden",
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"Shown:0:shown"}));
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QVERIFY(entries[2].layer.isVisible);
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const auto visible = LayerHierarchy::visibleLayers(layers);
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QCOMPARE(int(visible.size()), 1);
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QCOMPARE(visible[0].id, shown.id);
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const ProjectLayerRecord low = record("Low");
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const ProjectLayerRecord openFolder = record("Open", std::nullopt, true);
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const ProjectLayerRecord inside = record("Inside", openFolder.id);
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const ProjectLayerRecord high = record("High");
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const auto ordered = LayerHierarchy::visibleLayers({low, openFolder, inside, high});
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QCOMPARE(int(ordered.size()), 3);
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QCOMPARE(ordered[0].id, low.id);
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QCOMPARE(ordered[1].id, inside.id);
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QCOMPARE(ordered[2].id, high.id);
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}
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void GroupTests::anAbsentFolderFlagMeansALeaf()
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{
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ProjectLayerRecord legacy = record("Legacy");
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legacy.isGroup = std::nullopt;
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const ProjectLayerRecord stray = record("Stray", legacy.id);
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QCOMPARE(names(LayerHierarchy::entries({legacy, stray})), QStringList({"Legacy:0:shown"}));
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const auto visible = LayerHierarchy::visibleLayers({legacy});
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QCOMPARE(int(visible.size()), 1);
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QCOMPARE(visible[0].id, legacy.id);
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QVERIFY(legacy.imageFile.has_value());
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LayerHierarchy::validate({legacy});
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std::vector<ProjectLayerRecord> deepest = chain(64);
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ProjectLayerRecord leaf = record("Leaf", deepest[63].id);
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leaf.isGroup = std::nullopt;
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deepest.push_back(leaf);
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LayerHierarchy::validate(deepest);
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}
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void GroupTests::entriesStopBelowSixtyFourLevels()
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{
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std::vector<ProjectLayerRecord> layers = chain(70);
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const auto entries = LayerHierarchy::entries(layers);
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QCOMPARE(int(entries.size()), 65);
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QCOMPARE(entries.back().depth, 64);
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}
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void GroupTests::documentHierarchyFollowsItsLayers()
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{
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CanvasDocument document(100, 100);
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ImageLayer folder("Folder", document.size());
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folder.isGroup = true;
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folder.isVisible = false;
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ImageLayer child(ImportedImage(QImage(4, 4, QImage::Format_RGBA8888_Premultiplied), QImage(), "Child"), QPointF(0, 0));
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child.parentID = folder.id;
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ImageLayer open("Open", document.size());
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open.isGroup = true;
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ImageLayer shown("Shown", document.size());
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shown.parentID = open.id;
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ImageLayer top("Top", document.size());
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document.layers = {folder, child, open, shown, top};
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QCOMPARE(names(document.hierarchyEntries()),
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QStringList({"Folder:0:hidden", "Child:1:hidden", "Open:0:shown", "Shown:1:shown", "Top:0:shown"}));
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QCOMPARE(document.effectiveVisibleIDs(), QSet<QUuid>({open.id, shown.id, top.id}));
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const std::vector<ImageLayer> rendered = document.renderLayers();
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QCOMPARE(int(rendered.size()), 2);
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QCOMPARE(rendered[0], shown);
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QCOMPARE(rendered[1], top);
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ImageLayer twin("Twin", document.size());
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twin.id = top.id;
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document.layers.push_back(twin);
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QVERIFY_THROWS_EXCEPTION(std::logic_error, document.renderLayers());
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}
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void GroupTests::hierarchyRecordNamesFilesLikeTheMacApp()
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{
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ImageLayer layer(ImportedImage(QImage(4, 4, QImage::Format_RGBA8888_Premultiplied), QImage(), "Photo"), QPointF(3, 4));
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layer.id = QUuid("e621e1f8-c36c-495a-93fc-0c247a3e6e5f");
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layer.parentID = QUuid::createUuid();
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layer.isVisible = false;
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layer.opacity = 0.25;
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layer.blendMode = LayerBlendMode::screen;
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const ProjectLayerRecord record = layer.hierarchyRecord();
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QCOMPARE(record.id, layer.id);
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QCOMPARE(record.name, QString("Photo"));
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QCOMPARE(record.isVisible, false);
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QCOMPARE(record.transform, layer.transform);
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QCOMPARE(record.imageFile, std::optional<QString>("E621E1F8-C36C-495A-93FC-0C247A3E6E5F.png"));
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QCOMPARE(record.parentID, layer.parentID);
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QCOMPARE(record.isGroup, std::optional<bool>(false));
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QCOMPARE(record.opacity, std::optional<double>(0.25));
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QCOMPARE(record.blendMode, std::optional<LayerBlendMode>(LayerBlendMode::screen));
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ImageLayer folder("Folder", QSizeF(10, 10));
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folder.isGroup = true;
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QCOMPARE(folder.hierarchyRecord().imageFile, std::nullopt);
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QCOMPARE(folder.hierarchyRecord().isGroup, std::optional<bool>(true));
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}
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void GroupTests::projectErrorsCarryTheirMessages()
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{
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const ProjectError invalid(ProjectError::Kind::invalid);
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QCOMPARE(invalid.kind, ProjectError::Kind::invalid);
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QCOMPARE(invalid.version, std::nullopt);
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QCOMPARE(QString(invalid.what()), QString("This is not a valid OmaPhoto project, or its metadata is damaged."));
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const ProjectError version = ProjectError::unsupportedVersion(9);
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QCOMPARE(version.kind, ProjectError::Kind::version);
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QCOMPARE(version.version, std::optional<int>(9));
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QCOMPARE(QString(version.what()), QString("This project uses format version 9. This app supports versions 1–7."));
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QVERIFY_THROWS_EXCEPTION(std::logic_error, ProjectError(ProjectError::Kind::version));
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const ProjectError missingImage(ProjectError::Kind::missingImage);
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QCOMPARE(missingImage.kind, ProjectError::Kind::missingImage);
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QCOMPARE(QString(missingImage.what()),
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QString("An image inside the project is missing or damaged. The current document has not been replaced."));
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const ProjectError tooLarge(ProjectError::Kind::tooLarge);
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QCOMPARE(tooLarge.kind, ProjectError::Kind::tooLarge);
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QCOMPARE(QString(tooLarge.what()),
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QString("This project exceeds the supported canvas, layer, file-size, or 100-megapixel image limit."));
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const ProjectError encode(ProjectError::Kind::encode);
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QCOMPARE(encode.kind, ProjectError::Kind::encode);
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QCOMPARE(QString(encode.what()), QString("An image could not be saved. The previous project has not been replaced."));
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}
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QTEST_APPLESS_MAIN(GroupTests)
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#include "GroupTests.moc"
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