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 "IO/ImageExporter.h"
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#include "LiveMaskFixtures.h"
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#include <QtTest>
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class LiveMaskRendererTests : public QObject {
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Q_OBJECT
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private slots:
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void init();
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void aHiddenBlackSourceSuppliesAlphaAndRasterMasksMultiply();
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void movingTheSourceMovesCoverageAndChainsMultiply();
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void cyclesAndEndlessChainsDrawNothing();
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void coverageIsBuiltOncePerSource();
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void anOuterClipMultipliesIn();
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void aScaledPainterKeepsCoverageInDevicePixels();
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void pastThePixelBudgetStacksAndCoverageGiveWay();
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void rectangularDevicesKeepRowsAndColumnsApart();
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void drawOwnCannotLeakPainterState();
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void anAdjustmentAdjustsWithinItsBudgetAndStack();
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void anAdjustmentTakesAnyImageTarget();
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void surfacesThatCannotBeAllocatedAreLoggedAndTheRendererStaysUsable();
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void aClipThatCannotBeCombinedThrows();
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};
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void LiveMaskRendererTests::init()
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{
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QTest::failOnWarning(QRegularExpression("saved states|Unbalanced save/restore"));
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}
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void LiveMaskRendererTests::aHiddenBlackSourceSuppliesAlphaAndRasterMasksMultiply()
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{
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Scene scene;
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const QUuid target = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid source = scene.add(placed(asset({255, 0, 128, 255}, 0)));
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scene.layers[target].source = source;
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// The source is hidden: only the target is drawn.
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QCOMPARE(alphas(scene.render({target})), (std::array<int, 4>{255, 0, 128, 255}));
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QCOMPARE(reds(scene.render({target})), (std::array<int, 4>{255, 0, 128, 255}));
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scene.layers[target].opacity = 0.5;
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QCOMPARE(alphas(scene.render({target})), (std::array<int, 4>{127, 0, 64, 127}));
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scene.layers[target].mask = gray(2, 2, 128);
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QCOMPARE(alphas(scene.render({target})), (std::array<int, 4>{64, 0, 32, 64}));
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// The source's mask counts; its colour and visibility do not.
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scene.layers[target].opacity = 1;
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scene.layers[target].mask = QImage();
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scene.layers[source].mask = gray(2, 2, 128);
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QCOMPARE(alphas(scene.render({target})), (std::array<int, 4>{128, 0, 64, 128}));
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}
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void LiveMaskRendererTests::movingTheSourceMovesCoverageAndChainsMultiply()
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{
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Scene scene;
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const QUuid target = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid source = scene.add(placed(asset({255, 0, 128, 255}, 0)));
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scene.layers[target].source = source;
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scene.layers[source].transform.origin.rx() += 1;
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QCOMPARE(alphas(scene.render({target})), (std::array<int, 4>{0, 255, 0, 128}));
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scene.layers[source].transform.origin.rx() -= 1;
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const QUuid second = scene.add(placed(asset({0, 255, 255, 255})));
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scene.layers[source].source = second;
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QCOMPARE(alphas(scene.render({target})), (std::array<int, 4>{0, 0, 128, 255}));
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}
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void LiveMaskRendererTests::cyclesAndEndlessChainsDrawNothing()
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{
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Scene scene;
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const QUuid first = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid second = scene.add(placed(asset({255, 255, 255, 255})));
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scene.layers[first].source = second;
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scene.layers[second].source = first;
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QCOMPARE(scene.render({first, second}), BrushRaster::context(2, 2, false));
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// The cycle ends at once, not at the depth limit.
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QCOMPARE(scene.drawn[first], 1);
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QCOMPARE(scene.drawn[second], 2);
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// A chain past 256 sources stops instead of recursing on.
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Scene chain;
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std::vector<QUuid> ids;
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for (int index = 0; index < 300; ++index) {
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ids.push_back(chain.add(placed(asset({255, 255, 255, 255}))));
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if (index > 0)
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chain.layers[ids[index - 1]].source = ids[index];
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}
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QCOMPARE(chain.render({ids[0]}), BrushRaster::context(2, 2, false));
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// 255 sources deep still draws.
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QCOMPARE(alphas(chain.render({ids[44]})), (std::array<int, 4>{255, 255, 255, 255}));
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}
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void LiveMaskRendererTests::coverageIsBuiltOncePerSource()
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{
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Scene scene;
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const QUuid source = scene.add(placed(asset({255, 0, 128, 255}, 0)));
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const QUuid first = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid second = scene.add(placed(asset({255, 255, 255, 255})));
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scene.layers[first].source = source;
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scene.layers[second].source = source;
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LiveMaskRenderer live = scene.renderer();
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QImage surface = BrushRaster::context(2, 2, false);
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QPainter painter(&surface);
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live.draw(first, painter);
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live.draw(second, painter);
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live.draw(first, painter);
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painter.end();
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QCOMPARE(scene.drawn[source], 1);
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QCOMPARE(scene.drawn[first], 2);
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QCOMPARE(alphas(surface), (std::array<int, 4>{255, 0, 224, 255}));
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}
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void LiveMaskRendererTests::anOuterClipMultipliesIn()
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{
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Scene scene;
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const QUuid base = scene.add(placed(asset({255, 128, 32, 0}, 0)));
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const QUuid top = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid target = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid source = scene.add(placed(asset({255, 0, 128, 255}, 0)));
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scene.layers[top].source = base;
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scene.layers[target].source = source;
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QImage folder(2, 2, QImage::Format_Alpha8);
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folder.fill(128);
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LiveMaskRenderer live = scene.renderer();
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live.prepareStacks({base, top}, [](QUuid) { return std::nullopt; }, [](QUuid) { return LayerBlendMode::normal; });
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QImage stack = BrushRaster::context(2, 2, false), linked = stack, plain = stack;
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{
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QPainter painter(&stack);
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live.drawComposite(base, painter, folder);
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}
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QCOMPARE(alphas(stack), (std::array<int, 4>{128, 64, 16, 0}));
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{
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QPainter painter(&linked);
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live.drawComposite(target, painter, folder);
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}
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QCOMPARE(alphas(linked), (std::array<int, 4>{128, 0, 64, 128}));
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{
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QPainter painter(&plain);
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live.drawComposite(source, painter, folder);
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}
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QCOMPARE(alphas(plain), (std::array<int, 4>{128, 0, 64, 128}));
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}
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void LiveMaskRendererTests::aScaledPainterKeepsCoverageInDevicePixels()
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{
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Scene scene;
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const QUuid base = scene.add(placed(asset({255, 128, 32, 0}, 0)));
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const QUuid top = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid target = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid source = scene.add(placed(asset({255, 0, 128, 255}, 0)));
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scene.layers[top].source = base;
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scene.layers[target].source = source;
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for (const bool stacked : {true, false}) {
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LiveMaskRenderer live = scene.renderer();
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live.prepareStacks({base, top}, [](QUuid) { return std::nullopt; }, [](QUuid) { return LayerBlendMode::normal; });
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QImage surface = BrushRaster::context(6, 6, false);
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QPainter painter(&surface);
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painter.translate(1, 2);
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painter.scale(2, 2);
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live.drawComposite(stacked ? base : target, painter);
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painter.end();
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// Each layer pixel covers 2x2 device pixels, offset (1,2).
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const std::array<int, 4> expected = stacked ? std::array<int, 4>{255, 128, 32, 0} : std::array<int, 4>{255, 0, 128, 255};
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for (int index = 0; index < 4; ++index) {
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// Full-strength red: the child lies where the base does.
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QCOMPARE(surface.pixel(1 + index % 2 * 2, 2 + index / 2 * 2), qRgba(expected[index], 0, 0, expected[index]));
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QCOMPARE(surface.pixel(2 + index % 2 * 2, 3 + index / 2 * 2), qRgba(expected[index], 0, 0, expected[index]));
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}
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QCOMPARE(qAlpha(surface.pixel(0, 2)), 0);
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QCOMPARE(qAlpha(surface.pixel(5, 5)), 0);
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}
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}
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void LiveMaskRendererTests::pastThePixelBudgetStacksAndCoverageGiveWay()
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{
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Scene scene;
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const QUuid base = scene.add(placed(asset({255, 128, 32, 0}, 0)));
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const QUuid top = scene.add(placed(asset({255, 255, 255, 255})));
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scene.layers[top].source = base;
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LiveMaskRenderer live = scene.renderer(3);
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live.prepareStacks({base, top}, [](QUuid) { return std::nullopt; }, [](QUuid) { return LayerBlendMode::normal; });
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QImage surface = BrushRaster::context(2, 2, false);
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QPainter painter(&surface);
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// No group: the base draws alone; its child lacks coverage.
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live.drawComposite(base, painter);
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QTest::ignoreMessage(QtWarningMsg, "clip coverage passes its pixel budget: 2 x 2");
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live.drawComposite(top, painter);
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painter.end();
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QCOMPARE(alphas(surface), (std::array<int, 4>{255, 128, 32, 0}));
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QCOMPARE(reds(surface), (std::array<int, 4>{0, 0, 0, 0}));
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QCOMPARE(scene.drawn[top], 0);
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// A budget of exactly the device's four pixels is enough.
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LiveMaskRenderer fitting = scene.renderer(4);
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fitting.prepareStacks({base, top}, [](QUuid) { return std::nullopt; }, [](QUuid) { return LayerBlendMode::normal; });
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QImage shared = BrushRaster::context(2, 2, false);
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QPainter second(&shared);
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fitting.drawComposite(base, second);
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second.end();
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QCOMPARE(reds(shared), (std::array<int, 4>{255, 128, 32, 0}));
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}
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void LiveMaskRendererTests::rectangularDevicesKeepRowsAndColumnsApart()
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{
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// A 3x2 layer in a 4x3 device's far corner.
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const int alpha[6] = {255, 200, 150, 100, 50, 25};
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const Layer soft{.image = wide({255, 200, 150, 100, 50, 25}), .transform = placedAt({1, 1}, {3, 2})};
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QImage surface(4, 3, QImage::Format_RGBA8888_Premultiplied);
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surface.fill(0);
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// Half grey over full red, then the base's alpha.
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Scene stack;
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const QUuid base = stack.add(soft);
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const QUuid top = stack.add({.image = solid(3, 2, qRgba(128, 128, 128, 255)), .transform = placedAt({1, 1}, {3, 2}), .opacity = 0.5});
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stack.layers[top].source = base;
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const QImage grouped = stack.render({base, top}, surface);
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for (int index = 0; index < 6; ++index) {
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const int a = alpha[index];
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QCOMPARE(grouped.pixel(1 + index % 3, 1 + index / 3), qRgba((192 * a + 127) / 255, (64 * a + 127) / 255, (64 * a + 127) / 255, a));
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}
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QCOMPARE(grouped.pixel(0, 0), qRgba(0, 0, 0, 0));
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// A hidden source.
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Scene linked;
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const QUuid target = linked.add({.image = wide({255, 255, 255, 255, 255, 255}), .transform = placedAt({1, 1}, {3, 2})});
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const QUuid source = linked.add(soft);
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linked.layers[target].source = source;
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const QImage through = linked.render({target}, surface);
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for (int index = 0; index < 6; ++index)
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QCOMPARE(through.pixel(1 + index % 3, 1 + index / 3), qRgba(alpha[index], 0, 0, alpha[index]));
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QCOMPARE(through.pixel(0, 2), qRgba(0, 0, 0, 0));
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}
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void LiveMaskRendererTests::drawOwnCannotLeakPainterState()
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{
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const QImage red = solid(2, 2, qRgba(255, 0, 0, 255));
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const QUuid plain = QUuid::createUuid(), linked = QUuid::createUuid(), source = QUuid::createUuid(), failing = QUuid::createUuid();
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// Every draw moves and clips the painter, as callbacks might.
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LiveMaskRenderer live([&](QUuid id) { return id == linked ? std::optional(source) : std::nullopt; },
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[&](QUuid id, QPainter &painter, const QImage &clip) {
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if (id == failing)
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painter.translate(3, 3);
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if (id == failing)
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throw std::runtime_error("drawOwn failed");
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LayerRenderer::draw(red, placedAt({0, 0}, {2, 2}), QPointF(1, 1), painter, {.clip = clip});
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painter.translate(2, 0);
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painter.setClipRect(QRectF(0, 0, 1, 1));
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});
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QImage surface = BrushRaster::context(6, 2, false);
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QPainter painter(&surface);
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live.draw(plain, painter);
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QCOMPARE(painter.worldTransform(), QTransform());
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QVERIFY(!painter.hasClipping());
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live.draw(linked, painter);
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QCOMPARE(painter.worldTransform(), QTransform());
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QVERIFY(!painter.hasClipping());
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QVERIFY_EXCEPTION_THROWN(live.draw(failing, painter), std::runtime_error);
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QCOMPARE(painter.worldTransform(), QTransform());
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painter.end();
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QCOMPARE(surface.pixel(1, 1), qRgba(255, 0, 0, 255));
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QCOMPARE(surface.pixel(2, 0), qRgba(0, 0, 0, 0));
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}
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void LiveMaskRendererTests::surfacesThatCannotBeAllocatedAreLoggedAndTheRendererStaysUsable()
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{
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Scene scene;
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const QUuid base = scene.add(placed(asset({255, 128, 32, 0}, 0)));
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const QUuid top = scene.add(placed(asset({255, 255, 255, 255})));
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scene.layers[top].source = base;
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LiveMaskRenderer live = scene.renderer();
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live.prepareStacks({base, top}, [](QUuid) { return std::nullopt; }, [](QUuid) { return LayerBlendMode::normal; });
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// A device whose colour surfaces need 256 MB each.
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QImage surface(8192, 8192, QImage::Format_Alpha8);
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surface.fill(0);
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QPainter painter(&surface);
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std::optional<AddressSpaceLimit> limit(std::in_place, 96 * 1024 * 1024);
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QTest::ignoreMessage(QtWarningMsg, "a clipping stack could not be allocated: QSize(8192, 8192)");
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live.drawComposite(base, painter);
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QTest::ignoreMessage(QtWarningMsg, "clip coverage could not be allocated: QSize(8192, 8192)");
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live.drawComposite(top, painter);
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limit.reset();
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QCOMPARE(scene.drawn[base], 1);
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QCOMPARE(scene.drawn[top], 0);
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// With room again the child draws through the base.
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live.drawComposite(top, painter);
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painter.end();
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QCOMPARE(scene.drawn[top], 1);
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QCOMPARE(int(surface.constScanLine(0)[1]), 192);
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}
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void LiveMaskRendererTests::aClipThatCannotBeCombinedThrows()
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{
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Scene scene;
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const QUuid target = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid source = scene.add(placed(asset({255, 0, 128, 255}, 0)));
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scene.layers[target].source = source;
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LiveMaskRenderer live = scene.renderer();
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QImage surface(8192, 8192, QImage::Format_Alpha8), folder(8192, 8192, QImage::Format_Alpha8);
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surface.fill(0);
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folder.fill(255);
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QPainter painter(&surface);
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// The first draw caches the source's coverage.
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live.draw(target, painter);
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std::optional<AddressSpaceLimit> limit(std::in_place, 32 * 1024 * 1024);
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std::optional<ExportError::Kind> thrown;
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try {
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live.draw(target, painter, folder);
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} catch (const ExportError &error) {
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thrown = error.kind;
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}
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limit.reset();
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painter.end();
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QCOMPARE(thrown, std::optional(ExportError::Kind::render));
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QCOMPARE(scene.drawn[target], 1);
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}
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void LiveMaskRendererTests::anAdjustmentAdjustsWithinItsBudgetAndStack()
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{
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Scene scene;
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const QUuid base = scene.add(placed(asset({255, 255, 255, 255})));
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const QUuid levels = scene.add(Layer());
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LayerAdjustment darker{AdjustmentKind::levels};
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darker.levels.ranges[0].outputWhite = 0;
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const auto render = [&](qint64 budget) {
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LiveMaskRenderer live = scene.renderer(budget);
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live.adjustment = [&](QUuid id) { return id == levels ? std::optional(darker) : std::nullopt; };
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live.prepareStacks({base, levels}, [&](QUuid id) { return scene.layers[id].parent; }, [](QUuid) { return LayerBlendMode::normal; });
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QImage surface = BrushRaster::context(2, 2, false);
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QPainter painter(&surface);
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live.drawComposite(base, painter);
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live.drawComposite(levels, painter);
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painter.end();
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return surface;
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};
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// Four pixels fit: red turns black; three warn instead.
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QCOMPARE(reds(render(4)), (std::array<int, 4>{0, 0, 0, 0}));
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QTest::ignoreMessage(QtWarningMsg, "an adjustment passes its pixel budget: QSize(2, 2)");
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QCOMPARE(reds(render(3)), (std::array<int, 4>{255, 255, 255, 255}));
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// Clipped outside any stack, under another parent, it changes nothing.
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scene.layers[levels].source = base;
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scene.layers[levels].parent = QUuid::createUuid();
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QCOMPARE(reds(render(4)), (std::array<int, 4>{255, 255, 255, 255}));
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}
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void LiveMaskRendererTests::anAdjustmentTakesAnyImageTarget()
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{
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// Four colours, so every channel and position tells.
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QImage colours = BrushRaster::context(2, 2, false);
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colours.setPixel(0, 0, qRgba(200, 100, 50, 255));
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colours.setPixel(1, 0, qRgba(30, 160, 220, 255));
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colours.setPixel(0, 1, qRgba(90, 90, 90, 255));
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colours.setPixel(1, 1, qRgba(250, 240, 10, 255));
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Scene scene;
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const QUuid base = scene.add(placed(colours));
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const QUuid curve = scene.add(Layer());
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LayerAdjustment lifted{AdjustmentKind::curves};
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lifted.curves.channels[0] = {{0, 40}, {255, 200}};
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const auto draw = [&](QImage target, LayerBlendMode mode, double scale) {
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LiveMaskRenderer live = scene.renderer();
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live.adjustment = [&](QUuid id) { return id == curve ? std::optional(lifted) : std::nullopt; };
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live.prepareStacks({base, curve}, [](QUuid) { return std::nullopt; }, [&](QUuid id) { return id == curve ? mode : LayerBlendMode::normal; });
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target.fill(0);
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QPainter painter(&target);
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painter.scale(scale, scale);
|
||||
live.drawComposite(base, painter);
|
||||
live.drawComposite(curve, painter);
|
||||
painter.end();
|
||||
return target.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
|
||||
};
|
||||
const QImage untouched = draw(BrushRaster::context(2, 2, false), LayerBlendMode::normal, 1);
|
||||
for (const LayerBlendMode mode : {LayerBlendMode::normal, LayerBlendMode::multiply}) {
|
||||
const QImage plain = draw(BrushRaster::context(2, 2, false), mode, 1);
|
||||
QVERIFY(plain != colours && (mode == LayerBlendMode::normal || plain != untouched));
|
||||
// ARGB32 byte order: it reads colours, not bytes.
|
||||
QCOMPARE(draw(QImage(2, 2, QImage::Format_ARGB32_Premultiplied), mode, 1), plain);
|
||||
// Pixel ratio two draws as a painter scale of two.
|
||||
QImage sharp = BrushRaster::context(4, 4, false);
|
||||
sharp.setDevicePixelRatio(2);
|
||||
QImage ratio = draw(sharp, mode, 1);
|
||||
ratio.setDevicePixelRatio(1);
|
||||
QCOMPARE(ratio, draw(BrushRaster::context(4, 4, false), mode, 2));
|
||||
}
|
||||
}
|
||||
|
||||
QTEST_MAIN(LiveMaskRendererTests)
|
||||
#include "LiveMaskRendererTests.moc"
|
||||
Reference in new issue
Block a user