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annotate src/pngplayer.cpp @ 37:0c05958d254c

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(issue 13, 6) Add constant index number column to data and view
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 06 May 2015 17:17:13 +0200
parents 92bb9687d716
children 26e1521b9afd
rev   line source
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1 /* Copyright (C) 2015 by ETH Zürich
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 #include "pngplayer.h"
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9 #include "constants.h"
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10 #include "imagelabel.h"
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11 #include <QVBoxLayout>
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12 #include <QPixmap>
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13 #include <QLabel>
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14 #include <QPushButton>
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15 #include <QHBoxLayout>
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16 #include <QSlider>
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17 #include <QSettings>
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18 #include <QApplication>
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19 #include <QStyle>
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20
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21 #include <QDebug>
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22
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23 PNGPlayer::PNGPlayer(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f) {
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24 setupGUI();
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25 QSettings settings;
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26 double settingsSecs = settings.value(REPLAY_SPEED_KEY, REPLAY_SPEED_DEFAULT).toDouble();
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27 if (settingsSecs != 0) {
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28 mSpeedSlider->setValue(settingsSecs * 1000 / REPLAY_SPEED_STEP_MS);
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29 }
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30 speedChanged();
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31 }
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32
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33 void PNGPlayer::setupGUI() {
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34 QVBoxLayout *baseLayout = new QVBoxLayout;
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35 mPNGLabel = new ImageLabel;
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36 mPNGLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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37
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38 QHBoxLayout *controlArea = new QHBoxLayout;
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39 QHBoxLayout *controlBtns = new QHBoxLayout;
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40 controlArea->addLayout(controlBtns);
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41 controlArea->addStretch(-1);
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42
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43 QPushButton *firstBtn = new QPushButton;
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44 firstBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSkipBackward));
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45 controlBtns->addWidget(firstBtn);
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46 connect(firstBtn, &QPushButton::clicked, this, &PNGPlayer::firstClicked);
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47
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48 QPushButton *prevBtn = new QPushButton;
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49 prevBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSeekBackward));
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50 controlBtns->addWidget(prevBtn);
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51 connect(prevBtn, &QPushButton::clicked, this, &PNGPlayer::back);
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52
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53 mPlayBtn = new QPushButton;
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54 mPlayBtn->setCheckable(true);
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55 mPlayBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaPlay));
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56 controlBtns->addWidget(mPlayBtn);
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57 connect(mPlayBtn, &QPushButton::clicked, this, &PNGPlayer::togglePlay);
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58
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59 QPushButton *nextBtn = new QPushButton;
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60 nextBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSeekForward));
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61 connect(nextBtn, &QPushButton::clicked, this, &PNGPlayer::advance);
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62 controlBtns->addWidget(nextBtn);
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63
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64 QPushButton *lastBtn = new QPushButton;
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65 lastBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSkipForward));
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66 controlBtns->addWidget(lastBtn);
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67 connect(lastBtn, &QPushButton::clicked, this, &PNGPlayer::lastClicked);
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68
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69 mSlider = new QSlider(Qt::Horizontal);
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70 mSlider->setTickPosition(QSlider::TicksBelow);
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71 connect(mSlider, &QSlider::valueChanged, this, &PNGPlayer::sliderChanged);
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72 connect(mSlider, &QSlider::sliderPressed, this, &PNGPlayer::sliderPressed);
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73 connect(mSlider, &QSlider::sliderReleased, this, &PNGPlayer::sliderReleased);
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74
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75 QVBoxLayout *speedInfoArea = new QVBoxLayout;
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76 QHBoxLayout *speedArea = new QHBoxLayout;
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77 speedInfoArea->addLayout(speedArea);
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78
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79 QLabel *speedLabel = new QLabel(tr("Speed:"));
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80 speedArea->addWidget(speedLabel);
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81
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82 mSpeedSlider = new QSlider(Qt::Horizontal);
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83 mSpeedSlider->setMaximum(10);
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84 mSpeedSlider->setTickInterval(1);
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85 mSpeedSlider->setTickPosition(QSlider::TicksBelow);
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86 mSpeedSlider->setTracking(false);
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87 mSpeedSlider->setInvertedAppearance(true);
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88
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89 speedArea->addWidget(mSpeedSlider);
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90 connect(mSpeedSlider, &QSlider::valueChanged, this, &PNGPlayer::speedChanged);
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91
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92 mCurSpeedLabel = new QLabel;
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93 speedArea->addWidget(mCurSpeedLabel);
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94 speedArea->addStretch(-1);
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95
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96 mPositionLabel = new QLabel;
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97 speedInfoArea->addWidget(mPositionLabel);
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98
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99 controlArea->addLayout(speedInfoArea);
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100
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101 baseLayout->addWidget(mPNGLabel);
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102 baseLayout->addLayout(controlArea);
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103 baseLayout->addWidget(mSlider);
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104
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105 connect(&mAdvanceTimer, SIGNAL(timeout()), this, SIGNAL(advance()));
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106 setLayout(baseLayout);
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107 }
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108
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109 void PNGPlayer::showPicture(const QString& fileName, int current, int max,
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110 const QDateTime& timestamp, int number) {
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111 QPixmap pic(mBaseDir.filePath(fileName));
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112 /* If this is too slow we could use a pixmap cache here and do
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113 * some intelligent preloading */
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114 if (pic.isNull()) {
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115 qWarning() << "Failed to load picture: " << fileName;
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116 // emit error(tr("Failed to load picture: '%1'").arg(fileName));
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117 QIcon errIcon = QApplication::style()->standardIcon(QStyle::SP_MessageBoxCritical);
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118 mPNGLabel->setPixmap(errIcon.pixmap(QSize(128, 128)));
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119 } else {
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120 mPNGLabel->setPixmap(pic);
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121 }
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122 updatePositions(current, max, timestamp, number);
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123 }
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124
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125 void PNGPlayer::updatePositions(int current, int max, const QDateTime& timestamp,
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126 int number) {
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127 mMax = max;
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128 mSlider->blockSignals(true); /* We only want user generated changes */
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129 mSlider->setValue(current);
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130 mSlider->blockSignals(false);
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131 mSlider->setMaximum(max);
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132 mPositionLabel->setText("<b>" + tr("Screenshot Nr.:") + " </b>" +
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0c05958d254c (issue 13, 6) Add constant index number column to data and view
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133 QString("%1 (%2)").arg(current + 1).arg(max + 1) +
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134 "<b> " + tr("Index Nr.:") + " </b>" + QString::number(number) + " / <b>" +
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135 tr("Timestamp:") + " </b>" + (timestamp.isValid() ?
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136 timestamp.toString(LONG_DATE_FORMAT) : tr("Unknown")));
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137
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138 if (mMax == current && mAdvanceTimer.isActive()) {
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139 togglePlay();
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140 }
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141 }
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142
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143 void PNGPlayer::setSpeed(int mSecsPerPicture) {
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144 if (mSecsPerPicture == 1000) {
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145 mCurSpeedLabel->setText(tr("%1 second per Picture").
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146 arg(mSecsPerPicture / 1000.));
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147 } else {
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148 mCurSpeedLabel->setText(tr("%1 seconds per Picture").
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149 arg(mSecsPerPicture / 1000.));
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150 }
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151 mAdvanceTimer.setInterval(mSecsPerPicture);
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152 }
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153
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154 void PNGPlayer::togglePlay() {
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155 if (mAdvanceTimer.isActive()) {
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156 mAdvanceTimer.stop();
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157 mPlayBtn->setChecked(false);
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158 mPlayBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaPlay));
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159 } else {
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160 mAdvanceTimer.start();
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161 mPlayBtn->setChecked(true);
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162 mPlayBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaPause));
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163 emit advance();
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164 }
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165 }
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166
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167 void PNGPlayer::sliderChanged() {
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168 qDebug() << "Slider moved. ";
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169 emit jumpToFrame(mSlider->value());
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170 }
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171
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172 void PNGPlayer::sliderPressed() {
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173 qDebug() << "Slider pressed. Deactivating timer. ";
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174 mAdvanceTimer.stop();
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175 }
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176
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177 void PNGPlayer::sliderReleased() {
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178 if (mPlayBtn->isChecked()) {
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179 mAdvanceTimer.start();
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180 }
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181 }
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182
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183 void PNGPlayer::firstClicked() {
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184 emit jumpToFrame(0);
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185 }
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186
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187 void PNGPlayer::lastClicked() {
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188 emit jumpToFrame(mMax);
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189 }
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190
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191 void PNGPlayer::speedChanged() {
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192 if (mSpeedSlider->value()) {
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193 setSpeed(mSpeedSlider->value() * REPLAY_SPEED_STEP_MS);
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194 } else {
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195 setSpeed(REPLAY_SPEED_STEP_MS / 2);
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196 }
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197 QSettings settings;
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40a683d1a318 (issue15) Change picture speed setting to seconds and default to 1s
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198 settings.setValue(REPLAY_SPEED_KEY, (mSpeedSlider->value() * REPLAY_SPEED_STEP_MS) / 1000.0);
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199 }
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