Chris@1528: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@1528: 
Chris@1528: /*
Chris@1530:   Sonic Visualiser
Chris@1530:   An audio file viewer and annotation editor.
Chris@1530:   Centre for Digital Music, Queen Mary, University of London.
Chris@1528:     
Chris@1530:   This program is free software; you can redistribute it and/or
Chris@1530:   modify it under the terms of the GNU General Public License as
Chris@1530:   published by the Free Software Foundation; either version 2 of the
Chris@1530:   License, or (at your option) any later version.  See the file
Chris@1530:   COPYING included with this distribution for more information.
Chris@1528: */
Chris@1528: 
Chris@1528: #ifndef TEST_ZOOM_CONSTRAINTS_H
Chris@1528: #define TEST_ZOOM_CONSTRAINTS_H
Chris@1528: 
Chris@1528: #include "../PowerOfTwoZoomConstraint.h"
Chris@1528: #include "../PowerOfSqrtTwoZoomConstraint.h"
Chris@1528: 
Chris@1528: #include <QObject>
Chris@1528: #include <QtTest>
Chris@1528: #include <QDir>
Chris@1528: 
Chris@1528: #include <iostream>
Chris@1528: 
Chris@1528: using namespace std;
Chris@1528: 
Chris@1528: class TestZoomConstraints : public QObject
Chris@1528: {
Chris@1528:     Q_OBJECT
Chris@1528: 
Chris@1531:     void checkFpp(const ZoomConstraint &c,
Chris@1531:                   ZoomConstraint::RoundingDirection dir,
Chris@1531:                   int n,
Chris@1531:                   int expected) {
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, n),
Chris@1531:                                        dir),
Chris@1531:                  ZoomLevel(ZoomLevel::FramesPerPixel, expected));
Chris@1531:     }
Chris@1531:     
Chris@1528: private slots:
Chris@1528:     void unconstrainedNearest() {
Chris@1528:         ZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 3, 3);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 20, 20);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 32, 32);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1530:         QCOMPARE(c.getNearestZoomLevel(max), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented()), max);
Chris@1528:     }
Chris@1528:     
Chris@1528:     void unconstrainedUp() {
Chris@1528:         ZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 3, 3);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 20, 20);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 32, 32);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max,
Chris@1531:                                        ZoomConstraint::RoundUp), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented(),
Chris@1531:                                        ZoomConstraint::RoundUp), max);
Chris@1528:     }
Chris@1528:     
Chris@1528:     void unconstrainedDown() {
Chris@1528:         ZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 3, 3);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 20, 20);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 32, 32);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max,
Chris@1531:                                        ZoomConstraint::RoundDown), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented(),
Chris@1531:                                        ZoomConstraint::RoundDown), max);
Chris@1528:     }
Chris@1528: 
Chris@1528:     void powerOfTwoNearest() {
Chris@1528:         PowerOfTwoZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 3, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 20, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 23, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 24, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 25, 32);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1530:         QCOMPARE(c.getNearestZoomLevel(max), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented()), max);
Chris@1528:     }
Chris@1528:     
Chris@1528:     void powerOfTwoUp() {
Chris@1528:         PowerOfTwoZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 3, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 20, 32);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 32, 32);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 33, 64);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max,
Chris@1531:                                        ZoomConstraint::RoundUp), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented(),
Chris@1531:                                        ZoomConstraint::RoundUp), max);
Chris@1528:     }
Chris@1528:     
Chris@1528:     void powerOfTwoDown() {
Chris@1528:         PowerOfTwoZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 3, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 20, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 32, 32);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 33, 32);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max,
Chris@1531:                                        ZoomConstraint::RoundDown), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented(),
Chris@1531:                                        ZoomConstraint::RoundDown), max);
Chris@1528:     }
Chris@1528: 
Chris@1528:     void powerOfSqrtTwoNearest() {
Chris@1528:         PowerOfSqrtTwoZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 3, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 18, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 19, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 20, 22);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 23, 22);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 28, 32);
Chris@1528:         // PowerOfSqrtTwoZoomConstraint makes an effort to ensure
Chris@1528:         // bigger numbers get rounded to a multiple of something
Chris@1528:         // simple (64 or 90 depending on whether they are power-of-two
Chris@1528:         // or power-of-sqrt-two types)
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 800, 720);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1023, 1024);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1024, 1024);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1024, 1024);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundNearest, 1025, 1024);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1530:         QCOMPARE(c.getNearestZoomLevel(max), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented()), max);
Chris@1528:     }
Chris@1528:     
Chris@1528:     void powerOfSqrtTwoUp() {
Chris@1528:         PowerOfSqrtTwoZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 3, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 18, 22);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 22, 22);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 23, 32);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 800, 1024);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 1023, 1024);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 1024, 1024);
Chris@1528:         // see comment above
Chris@1531:         checkFpp(c, ZoomConstraint::RoundUp, 1025, 1440);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max,
Chris@1531:                                        ZoomConstraint::RoundUp), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented(),
Chris@1531:                                        ZoomConstraint::RoundUp), max);
Chris@1528:     }
Chris@1528:     
Chris@1528:     void powerOfSqrtTwoDown() {
Chris@1528:         PowerOfSqrtTwoZoomConstraint c;
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 1, 1);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 2, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 3, 2);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 4, 4);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 18, 16);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 22, 22);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 23, 22);
Chris@1528:         // see comment above
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 800, 720);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 1023, 720);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 1024, 1024);
Chris@1531:         checkFpp(c, ZoomConstraint::RoundDown, 1025, 1024);
Chris@1530:         auto max = c.getMaxZoomLevel();
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max,
Chris@1531:                                        ZoomConstraint::RoundDown), max);
Chris@1531:         QCOMPARE(c.getNearestZoomLevel(max.incremented(),
Chris@1531:                                        ZoomConstraint::RoundDown), max);
Chris@1528:     }
Chris@1528: };
Chris@1528: 
Chris@1528: #endif
Chris@1528: