File indexing completed on 2024-05-12 04:44:21

 // SPDX-FileCopyrightText: Lukas Sommer <sommerluk@gmail.com>
 // SPDX-License-Identifier: BSD-2-Clause OR MIT
 
 // First included header is the public header of the class we are testing;
 // this forces the header to be self-contained.
 #include "abstractdiagram.h"
 
 #include "helpermath.h"
 #include <qbrush.h>
 #include <qcolor.h>
 #include <qglobal.h>
 #include <qimage.h>
 #include <qnamespace.h>
 #include <qobject.h>
 #include <qpainter.h>
 #include <qsize.h>
 #include <qtest.h>
 #include <qtestcase.h>
 
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 #include <qtmetamacros.h>
 #else
 #include <qobjectdefs.h>
 #include <qstring.h>
 #endif
 
 class QWidget;
 
 class TestAbstractDiagramHelperClass : public PerceptualColor::AbstractDiagram
 {
     Q_OBJECT
 public:
     explicit TestAbstractDiagramHelperClass(QWidget *parent = nullptr)
         : AbstractDiagram(parent)
     {
         // This constructor exists only to satisfy Clazy code checker, which
         // expects constructors taking QWidget* as argument for all classes
         // that inherit from QWidget.
     }
     void testSnippet01()
     {
         //! [useTransparencyBackground]
         // Within a class derived from AbstractDiagram, you can use this code:
 
         QImage myImage(150, 200, QImage::Format_ARGB32_Premultiplied);
 
         QPainter myPainter(&myImage);
 
         // Fill the hole image with tiles made of transparencyBackground()
         myPainter.fillRect(0,
                            0,
                            150,
                            200,
                            // During painting, QBrush will ignore the
                            // device pixel ratio of the underlying
                            // transparencyBackground image!
                            QBrush(transparencyBackground()));
 
         // Paint semi-transparent red color above
         myPainter.fillRect(0, 0, 150, 200, QBrush(QColor(255, 0, 0, 128)));
         //! [useTransparencyBackground]
     }
 };
 
 namespace PerceptualColor
 {
 class TestAbstractDiagram : public QObject
 {
     Q_OBJECT
 
 public:
     explicit TestAbstractDiagram(QObject *parent = nullptr)
         : QObject(parent)
     {
     }
 
 private Q_SLOTS:
     void initTestCase()
     {
         // Called before the first test function is executed
     }
     void cleanupTestCase()
     {
         // Called after the last test function was executed
     }
 
     void init()
     {
         // Called before each test function is executed
     }
     void cleanup()
     {
         // Called after every test function
     }
 
     void testConstructorDestructor()
     {
         PerceptualColor::AbstractDiagram myDiagram;
     }
 
     void testShow()
     {
         // Just test if instantiating does not crash:
         PerceptualColor::AbstractDiagram myDiagram;
         myDiagram.show();
         QVERIFY2(myDiagram.isVisible(), "Test is diagram was shown correctly.");
     }
 
     void testSnippet01()
     {
         TestAbstractDiagramHelperClass helper;
         helper.testSnippet01();
     }
 
     void testTransparencyBackground()
     {
         PerceptualColor::AbstractDiagram myDiagram;
         QImage temp = myDiagram.transparencyBackground();
         QVERIFY2(temp.size().width() > 0, "Width of image is bigger than 0.");
         QVERIFY2(temp.size().height() > 0, "Height of image is bigger than 0.");
         QVERIFY2(temp.allGray(), "Image is neutral gray.");
     }
 
     void testFocusIndicatorColor()
     {
         QVERIFY2(AbstractDiagram().focusIndicatorColor().isValid(), "focusIndicatorColor() returns a valid color.");
     }
 
     void testPhysicalPixelSize()
     {
         AbstractDiagram temp;
         temp.show();
         qreal widthError = (temp.width() * temp.devicePixelRatioF()) - temp.physicalPixelSize().width();
         QVERIFY2(qAbs(widthError) < 1, "Rounding width with error < 1.");
         qreal heightError = (temp.height() * temp.devicePixelRatioF()) - temp.physicalPixelSize().height();
         QVERIFY2(qAbs(heightError) < 1, "Rounding height with error < 1.");
     }
 
     void testDiagramOffset()
     {
         AbstractDiagram myDiagram;
         myDiagram.resize(50, 50);
         QVERIFY2(isInRange(49.0, myDiagram.maximumWidgetSquareSize(), 50.0),
                  "Verify that maximumWidgetSquareSize is within expected "
                  "rounding range.");
         // Next try: off by one.
         myDiagram.resize(51, 51);
         QVERIFY2(isInRange(50.0, myDiagram.maximumWidgetSquareSize(), 51.0),
                  "Verify that maximumWidgetSquareSize is within expected "
                  "rounding range.");
     }
 
     void testHandle()
     {
         AbstractDiagram temp;
         QVERIFY2(temp.handleRadius() > 0, "Radius is positive.");
         QVERIFY2(temp.handleOutlineThickness() > 0, "Thickness is positive.");
         QVERIFY2(temp.handleRadius() > temp.handleOutlineThickness(),
                  "Radius is bigger than thickness. "
                  "(Otherwise, there would be no hole in the middle.)");
     }
 
     void testGradientThickness()
     {
         AbstractDiagram temp;
         QVERIFY(temp.gradientThickness() > 0);
     }
 
     void testGradientMinimumLength()
     {
         AbstractDiagram temp;
         QVERIFY(temp.gradientMinimumLength() > temp.gradientThickness());
     }
 
     void testHandleColorFromBackgroundLightness()
     {
         AbstractDiagram temp;
         QCOMPARE(temp.handleColorFromBackgroundLightness(-1), QColor(Qt::white));
         QCOMPARE(temp.handleColorFromBackgroundLightness(0), QColor(Qt::white));
         QCOMPARE(temp.handleColorFromBackgroundLightness(49), QColor(Qt::white));
         QCOMPARE(temp.handleColorFromBackgroundLightness(51), QColor(Qt::black));
         QCOMPARE(temp.handleColorFromBackgroundLightness(100), QColor(Qt::black));
         QCOMPARE(temp.handleColorFromBackgroundLightness(101), QColor(Qt::black));
     }
 };
 
 } // namespace PerceptualColor
 
 QTEST_MAIN(PerceptualColor::TestAbstractDiagram)
 // The following “include” is necessary because we do not use a header file:
 #include "testabstractdiagram.moc"