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 "SelectionCanvasFixtures.h"
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#include <QNativeGestureEvent>
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// The Crop tool on the canvas: drags, keys, cursors, frame.
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class CropCanvasTests : public QObject {
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Q_OBJECT
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private slots:
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void aDragDrawsMovesAndResizesTheFrame();
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void altAndCtrlShapeTheDragAsTheyChange();
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void snappingReachesEightViewPoints();
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void theKeysAndLostReleasesEndTheDrag();
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void theCursorShowsWhatAPressTakes();
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void theFrameDimsWhatItCutsAway();
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void aFramePastTheCanvasShowsWhatItTakesIn();
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void cropDraggingRedrawsOnlyTheOverlay();
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};
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namespace {
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struct CropCanvas : Canvas {
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CropCanvas()
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{
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// Zoomed about the middle, the pan keeps a float's dust.
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session.viewport.pan = QSizeF(0, 0);
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session.selectTool(NavigationTool::crop);
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canvas->synchronizeDisplay();
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}
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std::optional<QRectF> frame() const { return session.cropRect(); }
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Qt::CursorShape shape() const { return canvas->cursor().shape(); }
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};
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}
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void CropCanvasTests::aDragDrawsMovesAndResizesTheFrame()
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{
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CropCanvas shown;
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// On the whole canvas's frame a press draws anew.
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shown.press(QPointF(100, 100));
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QCOMPARE(shown.frame(), std::nullopt);
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shown.move(QPointF(200, 160));
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QCOMPARE(shown.frame(), std::optional(QRectF(100, 100, 100, 60)));
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shown.release(QPointF(200, 160));
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// Inside a drawn frame a press moves it.
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shown.drag(QPointF(150, 130), QPointF(160, 145));
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QCOMPARE(shown.frame(), std::optional(QRectF(110, 115, 100, 60)));
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// Eight points from the canvas's edge, an edge snaps.
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shown.drag(QPointF(150, 130), QPointF(45, 130));
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QCOMPARE(shown.frame(), std::optional(QRectF(0, 115, 100, 60)));
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// Corner grips resize; so do edges far from their middle.
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shown.drag(QPointF(100, 175), QPointF(150, 200));
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QCOMPARE(shown.frame(), std::optional(QRectF(0, 115, 150, 85)));
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shown.drag(QPointF(20, 115), QPointF(20, 95));
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QCOMPARE(shown.frame(), std::optional(QRectF(0, 95, 150, 105)));
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// A fixed ratio shapes a new frame.
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shown.session.setCropRatioChoice("1:1");
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shown.drag(QPointF(250, 20), QPointF(310, 50));
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QCOMPARE(shown.frame(), std::optional(QRectF(250, 20, 60, 60)));
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// Dragged past the bounds, a frame keeps its last shape.
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shown.session.setCropRatioChoice("Free");
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shown.session.zoom(0.01);
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shown.canvas->synchronizeDisplay();
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shown.press(QPointF(1, 1));
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shown.move(QPointF(100, 100));
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const QRectF good = shown.frame().value();
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shown.move(QPointF(399, 299));
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QCOMPARE(shown.frame(), std::optional(good));
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shown.release(QPointF(399, 299));
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}
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void CropCanvasTests::altAndCtrlShapeTheDragAsTheyChange()
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{
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CropCanvas shown;
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// Alt grows the frame out from the press.
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shown.press(QPointF(300, 50), Qt::AltModifier);
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shown.move(QPointF(320, 60), Qt::AltModifier);
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QCOMPARE(shown.frame(), std::optional(QRectF(280, 40, 40, 20)));
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shown.release(QPointF(320, 60), Qt::AltModifier);
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// Ctrl leaves the edges where the pointer puts them.
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shown.drag(QPointF(100, 100), QPointF(395, 200));
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QCOMPARE(shown.frame(), std::optional(QRectF(100, 100, 300, 100)));
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shown.session.cancelCrop();
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shown.drag(QPointF(100, 100), QPointF(395, 200), Qt::ControlModifier);
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QCOMPARE(shown.frame(), std::optional(QRectF(100, 100, 295, 100)));
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// A key pressed or let go mid-drag reshapes at once.
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shown.session.cancelCrop();
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shown.press(QPointF(200, 150));
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shown.move(QPointF(220, 160));
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 150, 20, 10)));
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QTest::keyPress(shown.window.windowHandle(), Qt::Key_Alt, Qt::AltModifier);
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QCOMPARE(shown.frame(), std::optional(QRectF(180, 140, 40, 20)));
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QTest::keyRelease(shown.window.windowHandle(), Qt::Key_Alt, Qt::NoModifier);
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 150, 20, 10)));
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shown.move(QPointF(395, 160));
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 150, 200, 10)));
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QTest::keyPress(shown.window.windowHandle(), Qt::Key_Control, Qt::ControlModifier);
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 150, 195, 10)));
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QTest::keyRelease(shown.window.windowHandle(), Qt::Key_Control, Qt::NoModifier);
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shown.release(QPointF(395, 160));
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// Without a drag a key leaves the frame be.
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QTest::keyPress(shown.window.windowHandle(), Qt::Key_Alt, Qt::AltModifier);
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QTest::keyRelease(shown.window.windowHandle(), Qt::Key_Alt, Qt::NoModifier);
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 150, 200, 10)));
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}
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void CropCanvasTests::theKeysAndLostReleasesEndTheDrag()
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{
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CropCanvas shown;
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EditorSession &session = shown.session;
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// The canvas takes the frame's keys: nothing above sees them.
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QKeyEvent escape(QEvent::KeyPress, Qt::Key_Escape, Qt::NoModifier);
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QApplication::sendEvent(shown.canvas, &escape);
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QVERIFY(escape.isAccepted());
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// Escape drops the frame, mid-drag too, ending the drag.
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shown.move(QPointF(150, 150));
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QTest::keyClick(shown.canvas, Qt::Key_Escape);
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QCOMPARE(shown.frame(), std::nullopt);
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shown.move(QPointF(200, 200));
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QCOMPARE(shown.frame(), std::nullopt);
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shown.release(QPointF(200, 200));
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QCOMPARE(session.visibleCropRect(), std::optional(QRectF(0, 0, 400, 300)));
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// Return without a frame crops nothing.
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QTest::keyClick(shown.canvas, Qt::Key_Return);
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QTest::qWait(20);
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QCOMPARE(session.document().value().width, 400);
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// Losing the keys, or the left button, ends a drag.
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shown.press(QPointF(100, 100));
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shown.move(QPointF(150, 150));
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QFocusEvent out(QEvent::FocusOut, Qt::ActiveWindowFocusReason);
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QApplication::sendEvent(shown.canvas, &out);
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shown.move(QPointF(200, 200));
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QCOMPARE(shown.frame(), std::optional(QRectF(100, 100, 50, 50)));
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shown.canvas->setFocus();
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shown.press(QPointF(10, 250));
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shown.move(QPointF(20, 260));
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shown.hover(QPointF(30, 270));
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shown.move(QPointF(40, 280));
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QCOMPARE(shown.frame(), std::optional(QRectF(10, 250, 10, 10)));
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shown.release(QPointF(40, 280));
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// Mid-drag, wheels and pinches neither pan nor zoom.
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const CanvasViewport before = session.viewport;
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shown.press(QPointF(200, 50));
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wheel(*shown.canvas, QPointF(200, 50), QPoint(0, 40), QPoint(0, 120), Qt::NoModifier);
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QNativeGestureEvent pinch(Qt::ZoomNativeGesture, QPointingDevice::primaryPointingDevice(), 2, QPointF(200, 50), QPointF(200, 50),
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shown.canvas->mapToGlobal(QPoint(200, 50)), 0.5, QPointF());
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QApplication::sendEvent(shown.canvas, &pinch);
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QVERIFY(session.viewport == before);
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// Busy, or another tool, and a drag changes nothing.
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shown.move(QPointF(250, 80));
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 50, 50, 30)));
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session.setIsProjectBusy(true);
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shown.move(QPointF(260, 90));
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QCOMPARE(shown.frame(), std::optional(QRectF(200, 50, 50, 30)));
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session.setIsProjectBusy(false);
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session.selectTool(NavigationTool::brush);
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shown.move(QPointF(270, 100));
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// The Brush's circle follows the pointer meanwhile.
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QCOMPARE(shown.canvas->brushCursor().circle().value().center(), QPointF(270, 100));
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QTest::keyPress(shown.window.windowHandle(), Qt::Key_Alt, Qt::AltModifier);
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QTest::keyRelease(shown.window.windowHandle(), Qt::Key_Alt, Qt::NoModifier);
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QCOMPARE(shown.frame(), std::nullopt);
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shown.release(QPointF(270, 100));
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// Return crops to the frame, Enter alike; one step each.
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session.selectTool(NavigationTool::crop);
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session.setCropRect(QRectF(10, 20, 200, 100));
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QTest::keyClick(shown.canvas, Qt::Key_Return);
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QTRY_COMPARE(session.document().value().width, 200);
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QCOMPARE(session.document().value().height, 100);
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QCOMPARE(session.history.undoName(), QString("Crop"));
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session.setCropRect(QRectF(0, 0, 50, 40));
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QTest::keyClick(shown.canvas, Qt::Key_Enter, Qt::KeypadModifier);
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QTRY_COMPARE(session.document().value().width, 50);
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// Off the Crop tool, Return goes to a transform.
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session.selectTool(NavigationTool::move);
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session.insert(filled(10, 10, qRgba(0, 0, 255, 255), "Blue"));
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session.beginTransform();
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QVERIFY(session.transformEdit());
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QTest::keyClick(shown.canvas, Qt::Key_Return);
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QVERIFY(!session.transformEdit());
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QCOMPARE(session.document().value().width, 50);
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// A document gone mid-drag leaves the drag nothing to do.
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session.selectTool(NavigationTool::crop);
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shown.press(QPointF(10, 10));
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session.clearProject();
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shown.move(QPointF(30, 30));
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QTest::keyPress(shown.window.windowHandle(), Qt::Key_Alt, Qt::AltModifier);
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QTest::keyRelease(shown.window.windowHandle(), Qt::Key_Alt, Qt::NoModifier);
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QCOMPARE(shown.frame(), std::nullopt);
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shown.release(QPointF(30, 30));
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}
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void CropCanvasTests::snappingReachesEightViewPoints()
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{
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CropCanvas shown;
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// At 100% eight points are eight pixels: nine stay out.
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shown.drag(QPointF(100, 100), QPointF(391, 200));
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QCOMPARE(shown.frame(), std::optional(QRectF(100, 100, 291, 100)));
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// At 50% the same eight points reach sixteen pixels.
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shown.session.zoom(0.5);
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shown.canvas->synchronizeDisplay();
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const QSizeF size = shown.documentSize();
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const QPointF from = shown.session.viewport.viewPoint(QPointF(100, 50), size), to = shown.session.viewport.viewPoint(QPointF(390, 170), size);
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shown.drag(from, to);
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QCOMPARE(shown.frame(), std::optional(QRectF(100, 50, 300, 120)));
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}
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void CropCanvasTests::theCursorShowsWhatAPressTakes()
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{
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CropCanvas shown;
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// Before any hover, the crosshair.
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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// A narrow frame's corners overlap: the first corner wins.
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shown.session.setCropRect(QRectF(100, 100, 10, 100));
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shown.canvas->synchronizeDisplay();
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shown.hover(QPointF(105, 100));
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QCOMPARE(shown.shape(), Qt::SizeFDiagCursor);
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shown.session.setCropRect(QRectF(100, 100, 200, 100));
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shown.canvas->synchronizeDisplay();
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shown.hover(QPointF(200, 150));
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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shown.hover(QPointF(50, 50));
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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const std::pair<QPointF, Qt::CursorShape> grips[] = {
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{{100, 100}, Qt::SizeFDiagCursor}, {{200, 100}, Qt::SizeVerCursor}, {{300, 100}, Qt::SizeBDiagCursor}, {{300, 150}, Qt::SizeHorCursor},
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{{300, 200}, Qt::SizeFDiagCursor}, {{200, 200}, Qt::SizeVerCursor}, {{100, 200}, Qt::SizeBDiagCursor}, {{100, 150}, Qt::SizeHorCursor},
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{{115, 91}, Qt::SizeVerCursor}, {{109, 185}, Qt::SizeHorCursor}, {{109.5, 109.5}, Qt::SizeFDiagCursor}, {{110, 110}, Qt::CrossCursor},
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{{90, 95}, Qt::SizeFDiagCursor}, {{95, 90}, Qt::SizeFDiagCursor}};
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for (const auto &[at, cursor] : grips) {
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shown.hover(at);
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QCOMPARE(shown.shape(), cursor);
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}
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// Space pans.
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QTest::keyPress(shown.canvas, Qt::Key_Space);
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shown.hover(QPointF(300, 200));
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QCOMPARE(shown.shape(), Qt::OpenHandCursor);
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QTest::keyRelease(shown.canvas, Qt::Key_Space);
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QCOMPARE(shown.shape(), Qt::SizeFDiagCursor);
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// A new frame keeps its press's cursor: the old frame's.
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shown.hover(QPointF(5, 150));
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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shown.press(QPointF(5, 150));
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QCOMPARE(shown.frame(), std::nullopt);
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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shown.move(QPointF(30, 170));
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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shown.release(QPointF(30, 170));
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shown.session.setCropRect(QRectF(100, 100, 200, 100));
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shown.canvas->synchronizeDisplay();
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// A drag keeps its press's cursor until the release.
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shown.session.cancelCrop();
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shown.press(QPointF(50, 50));
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shown.move(QPointF(150, 150));
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QCOMPARE(shown.frame(), std::optional(QRectF(50, 50, 100, 100)));
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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shown.release(QPointF(150, 150));
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QCOMPARE(shown.shape(), Qt::SizeFDiagCursor);
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shown.press(QPointF(150, 100));
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QCOMPARE(shown.shape(), Qt::SizeHorCursor);
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shown.move(QPointF(120, 60));
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QCOMPARE(shown.shape(), Qt::SizeHorCursor);
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QTest::keyClick(shown.canvas, Qt::Key_Escape);
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shown.canvas->synchronizeDisplay();
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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shown.release(QPointF(120, 60));
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// Escape without a crop drag leaves another drag's cursor be.
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shown.session.selectTool(NavigationTool::move);
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shown.session.insert(filled(100, 100, qRgba(0, 0, 255, 255), "Blue"));
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shown.press(QPointF(200, 150));
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const QImage dragging = image(shown.canvas->cursor());
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QVERIFY(!dragging.isNull());
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QTest::keyClick(shown.canvas, Qt::Key_C);
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QTest::keyClick(shown.canvas, Qt::Key_Escape);
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QCOMPARE(image(shown.canvas->cursor()), dragging);
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shown.release(QPointF(200, 150));
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// Return frees the drag cursor at once, before the crop.
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shown.press(QPointF(50, 50));
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shown.move(QPointF(150, 150));
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QCOMPARE(shown.shape(), Qt::CrossCursor);
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QTest::keyClick(shown.canvas, Qt::Key_Return);
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QCOMPARE(shown.shape(), Qt::SizeFDiagCursor);
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shown.release(QPointF(150, 150));
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QTRY_COMPARE(shown.session.document().value().width, 100);
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}
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void CropCanvasTests::theFrameDimsWhatItCutsAway()
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{
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CropCanvas shown;
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EditorSession &session = shown.session;
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session.setCropRect(QRectF(100, 100, 200, 100));
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QImage image(400, 300, QImage::Format_RGB32);
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image.fill(QColor(200, 200, 200));
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{
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QPainter painter(&image);
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TransformOverlay(session).draw(painter, shown.canvas->palette());
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}
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// Outside, 60% black; inside, clear but for lines and grips.
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QCOMPARE(qRed(image.pixel(50, 50)), 80);
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QCOMPARE(qRed(image.pixel(150, 150)), 200);
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QCOMPARE(qRed(image.pixel(150, 120)), 200);
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// The frame straddles the edge: half white, half beneath.
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QVERIFY(std::abs(qRed(image.pixel(150, 100)) - 228) <= 1);
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QVERIFY(std::abs(qRed(image.pixel(150, 99)) - 168) <= 1);
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// A third's line: 40% white over its pixels, antialiased.
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QVERIFY(qRed(image.pixel(166, 120)) > 210 && qRed(image.pixel(166, 120)) < 221);
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QCOMPARE(qRed(image.pixel(165, 120)), 200);
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QVERIFY(qRed(image.pixel(150, 133)) > 205);
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// Both thirds each way, end to end, flat-capped.
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for (const QPoint third : {QPoint(233, 120), QPoint(150, 166), QPoint(166, 101), QPoint(166, 198), QPoint(298, 133)})
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QVERIFY2(qRed(image.pixel(third)) > 205, qPrintable(QString("%1 %2").arg(third.x()).arg(third.y())));
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QVERIFY(std::abs(qRed(image.pixel(166, 99)) - 168) <= 2);
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// White grips with black rims, corners and middles alike.
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for (const QPoint grip : {QPoint(102, 102), QPoint(202, 102), QPoint(298, 198), QPoint(102, 152)})
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QCOMPARE(image.pixel(grip), qRgb(255, 255, 255));
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QVERIFY(qRed(image.pixel(96, 101)) < 200);
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// At twice the scale a grip's corner is mitred.
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QImage twice(800, 600, QImage::Format_RGB32);
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twice.fill(QColor(200, 200, 200));
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{
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QPainter painter(&twice);
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painter.scale(2, 2);
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TransformOverlay(session).draw(painter, shown.canvas->palette());
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}
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QCOMPARE(qRed(twice.pixel(191, 191)), 0);
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QCOMPARE(qRed(twice.pixel(204, 204)), 255);
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// It repaints the frames, the grips' five points around.
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QCOMPARE(TransformOverlay(session).drawnRect(QRect(0, 0, 400, 300)), QRect(95, 95, 210, 110));
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session.zoom(2);
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QCOMPARE(TransformOverlay(session).cropViewRect().value().size(), QSizeF(400, 200));
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QCOMPARE(TransformOverlay(session).cropViewRect().value().topLeft(), session.viewport.viewPoint(QPointF(100, 100), QSizeF(400, 300)));
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session.zoom(1);
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session.selectTool(NavigationTool::hand);
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QVERIFY(TransformOverlay(session).drawnRect(QRect(0, 0, 400, 300)).isEmpty());
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QVERIFY(TransformOverlay(session).cropResizeRegions().empty());
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}
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void CropCanvasTests::aFramePastTheCanvasShowsWhatItTakesIn()
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{
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Shown shown;
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shown.settle();
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shown.session.zoom(1);
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shown.canvas->synchronizeDisplay();
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// The document sits at 150–250 × 100–200 in view points.
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QCOMPARE(shown.session.viewport.viewPoint(QPointF(0, 0), shown.documentSize()), QPointF(150, 100));
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const QColor surround = shown.canvas->palette().color(QPalette::Base);
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QCOMPARE(shown.canvas->grab().toImage().pixelColor(120, 150), surround);
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shown.session.selectTool(NavigationTool::crop);
|
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shown.session.setCropRect(QRectF(-50, 0, 100, 100));
|
||||
shown.canvas->synchronizeDisplay();
|
||||
const QImage shot = shown.canvas->grab().toImage();
|
||||
// The checkerboard's squares: the frame takes this in.
|
||||
QCOMPARE(qGray(shot.pixel(120, 150)), 77);
|
||||
QCOMPARE(qGray(shot.pixel(106, 106)), 89);
|
||||
// The canvas still shows beside it, dimmed.
|
||||
QVERIFY(std::abs(qGray(shot.pixel(230, 150)) - 36) <= 1);
|
||||
// Beyond the frame the surround shows, dimmed.
|
||||
QVERIFY(std::abs(qRed(shot.pixel(20, 20)) - qRound(surround.red() * 0.4)) <= 1);
|
||||
shown.session.selectTool(NavigationTool::hand);
|
||||
shown.canvas->synchronizeDisplay();
|
||||
QCOMPARE(shown.canvas->grab().toImage().pixelColor(120, 150), surround);
|
||||
// Coming and going, the dimming repaints the canvas.
|
||||
shown.session.viewport.pan = QSizeF(0, 0);
|
||||
shown.canvas->synchronizeDisplay();
|
||||
QApplication::processEvents();
|
||||
PaintSpy spy(*shown.canvas);
|
||||
const auto shows = [&](const std::function<void()> &change) {
|
||||
spy.painted = QRect();
|
||||
change();
|
||||
shown.canvas->synchronizeDisplay();
|
||||
QApplication::processEvents();
|
||||
return spy.painted;
|
||||
};
|
||||
QCOMPARE(shows([&] { shown.session.selectTool(NavigationTool::crop); }), shown.canvas->rect());
|
||||
// A changed frame repaints the old and the new alone.
|
||||
QCOMPARE(shows([&] { shown.session.setCropRect(QRectF(10, 0, 20, 20)); }), QRect(145, 95, 110, 110));
|
||||
QCOMPARE(shows([&] { shown.session.setCropRect(QRectF(20, 0, 20, 20)); }), QRect(155, 95, 40, 30));
|
||||
QCOMPARE(shows([&] { shown.session.selectTool(NavigationTool::hand); }), shown.canvas->rect());
|
||||
}
|
||||
|
||||
// Swift's test: inside the canvas a drag repaints frames alone.
|
||||
void CropCanvasTests::cropDraggingRedrawsOnlyTheOverlay()
|
||||
{
|
||||
Shown shown(QSize(800, 600), QSize(600, 450));
|
||||
shown.settle();
|
||||
EditorSession &session = shown.session;
|
||||
session.insert(filled(400, 300, qRgba(255, 0, 0, 255), "Red"));
|
||||
session.selectTool(NavigationTool::crop);
|
||||
shown.canvas->synchronizeDisplay();
|
||||
QApplication::processEvents();
|
||||
PaintSpy spy(*shown.canvas);
|
||||
QTest::mousePress(shown.canvas, Qt::LeftButton, Qt::NoModifier, QPoint(150, 120));
|
||||
QApplication::processEvents();
|
||||
const auto viewRect = [&] { return TransformOverlay(session).cropViewRect().value(); };
|
||||
QRectF shown_ = viewRect();
|
||||
for (int step = 0; step < 10; ++step) {
|
||||
spy.painted = QRect();
|
||||
drag(*shown.canvas, QPointF(170 + step * 10, 140 + step * 8));
|
||||
QApplication::processEvents();
|
||||
const QRectF next = viewRect();
|
||||
// Old and new frames together, grips and all.
|
||||
QVERIFY((shown_ | next).adjusted(-5, -5, 5, 5).toAlignedRect().contains(spy.painted));
|
||||
QVERIFY(spy.painted.contains(next.toAlignedRect()));
|
||||
QVERIFY(step == 0 || spy.painted.width() < 150);
|
||||
QVERIFY(!shown.canvas->synchronizeDisplay());
|
||||
shown_ = next;
|
||||
}
|
||||
QTest::mouseRelease(shown.canvas, Qt::LeftButton, Qt::NoModifier, QPoint(260, 212));
|
||||
QVERIFY(session.cropRect().has_value());
|
||||
}
|
||||
|
||||
QTEST_MAIN(CropCanvasTests)
|
||||
#include "CropCanvasTests.moc"
|
||||
Reference in new issue
Block a user