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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7
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8 This program is free software; you can redistribute it and/or
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9 modify it under the terms of the GNU General Public License as
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10 published by the Free Software Foundation; either version 2 of the
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11 License, or (at your option) any later version. See the file
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12 COPYING included with this distribution for more information.
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13 */
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14
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15 #ifndef TEST_ZOOM_CONSTRAINTS_H
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16 #define TEST_ZOOM_CONSTRAINTS_H
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17
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18 #include "../PowerOfTwoZoomConstraint.h"
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19 #include "../PowerOfSqrtTwoZoomConstraint.h"
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20
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21 #include <QObject>
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22 #include <QtTest>
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23 #include <QDir>
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24
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25 #include <iostream>
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26
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27 using namespace std;
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28
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29 class TestZoomConstraints : public QObject
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30 {
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31 Q_OBJECT
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32
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33 private slots:
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34 void unconstrainedNearest() {
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35 // well, this shows how horrible this api is
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36 ZoomConstraint c;
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37 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1)), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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38 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2)), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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39 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3)), ZoomLevel(ZoomLevel::FramesPerPixel, 3));
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40 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4)), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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41 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20)), ZoomLevel(ZoomLevel::FramesPerPixel, 20));
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42 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 23)), ZoomLevel(ZoomLevel::FramesPerPixel, 23));
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43 auto max = c.getMaxZoomLevel();
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44 QCOMPARE(c.getNearestZoomLevel(max), max);
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45 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1)), max);
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46 }
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47
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48 void unconstrainedUp() {
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49 ZoomConstraint c;
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50 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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51 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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52 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 3));
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53 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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54 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 20));
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55 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 32), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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56 auto max = c.getMaxZoomLevel();
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57 QCOMPARE(c.getNearestZoomLevel(max, ZoomConstraint::RoundUp), max);
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58 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1), ZoomConstraint::RoundUp), max);
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59 }
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60
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61 void unconstrainedDown() {
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62 ZoomConstraint c;
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63 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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64 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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65 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 3));
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66 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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67 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 20));
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68 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 32), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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69 auto max = c.getMaxZoomLevel();
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70 QCOMPARE(c.getNearestZoomLevel(max, ZoomConstraint::RoundDown), max);
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71 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1), ZoomConstraint::RoundDown), max);
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72 }
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73
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74 void powerOfTwoNearest() {
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75 PowerOfTwoZoomConstraint c;
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76 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1)), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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77 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2)), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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78 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3)), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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79 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4)), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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80 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20)), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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81 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 23)), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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82 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 24)), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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83 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 25)), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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84 auto max = c.getMaxZoomLevel();
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85 QCOMPARE(c.getNearestZoomLevel(max), max);
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86 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1)), max);
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87 }
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88
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89 void powerOfTwoUp() {
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90 PowerOfTwoZoomConstraint c;
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91 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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92 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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93 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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94 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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95 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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96 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 32), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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97 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 33), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 64));
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98 auto max = c.getMaxZoomLevel();
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99 QCOMPARE(c.getNearestZoomLevel(max, ZoomConstraint::RoundUp), max);
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100 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1), ZoomConstraint::RoundUp), max);
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101 }
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102
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103 void powerOfTwoDown() {
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104 PowerOfTwoZoomConstraint c;
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105 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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106 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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107 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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108 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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109 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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110 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 32), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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111 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 33), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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112 auto max = c.getMaxZoomLevel();
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113 QCOMPARE(c.getNearestZoomLevel(max, ZoomConstraint::RoundDown), max);
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114 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1), ZoomConstraint::RoundDown), max);
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115 }
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116
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117 void powerOfSqrtTwoNearest() {
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118 PowerOfSqrtTwoZoomConstraint c;
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119 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1)), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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120 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2)), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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121 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3)), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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122 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4)), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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123 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 18)), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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124 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 19)), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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125 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 20)), ZoomLevel(ZoomLevel::FramesPerPixel, 22));
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126 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 23)), ZoomLevel(ZoomLevel::FramesPerPixel, 22));
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127 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 28)), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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128 // PowerOfSqrtTwoZoomConstraint makes an effort to ensure
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129 // bigger numbers get rounded to a multiple of something
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130 // simple (64 or 90 depending on whether they are power-of-two
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131 // or power-of-sqrt-two types)
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132 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 800)), ZoomLevel(ZoomLevel::FramesPerPixel, 720));
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133 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1023)), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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134 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1024)), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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135 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1025)), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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136 auto max = c.getMaxZoomLevel();
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137 QCOMPARE(c.getNearestZoomLevel(max), max);
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138 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1)), max);
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139 }
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140
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141 void powerOfSqrtTwoUp() {
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142 PowerOfSqrtTwoZoomConstraint c;
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143 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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144 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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145 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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146 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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147 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 18), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 22));
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148 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 22), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 22));
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149 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 23), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 32));
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150 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 800), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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151 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1023), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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152 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1024), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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153 // see comment above
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154 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1025), ZoomConstraint::RoundUp), ZoomLevel(ZoomLevel::FramesPerPixel, 1440));
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155 auto max = c.getMaxZoomLevel();
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156 QCOMPARE(c.getNearestZoomLevel(max, ZoomConstraint::RoundUp), max);
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157 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1), ZoomConstraint::RoundUp), max);
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158 }
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159
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160 void powerOfSqrtTwoDown() {
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161 PowerOfSqrtTwoZoomConstraint c;
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162 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 1));
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163 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 2), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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164 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 3), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 2));
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165 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 4), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 4));
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166 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 18), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 16));
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167 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 22), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 22));
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168 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 23), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 22));
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169 // see comment above
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170 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 800), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 720));
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171 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1023), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 720));
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172 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1024), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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173 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, 1025), ZoomConstraint::RoundDown), ZoomLevel(ZoomLevel::FramesPerPixel, 1024));
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174 auto max = c.getMaxZoomLevel();
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175 QCOMPARE(c.getNearestZoomLevel(max, ZoomConstraint::RoundDown), max);
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176 QCOMPARE(c.getNearestZoomLevel(ZoomLevel(ZoomLevel::FramesPerPixel, max.level + 1), ZoomConstraint::RoundDown), max);
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177 }
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178 };
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179
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180 #endif
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181
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