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annotate src/pngplayer.cpp @ 3:248d5d1cdb38

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Add functionalty to control buttons and make picture resizable
author Andre Heinecke <andre.heinecke@intevation.de>
date Mon, 23 Mar 2015 19:10:01 +0100
parents 97d2c8869c39
children 107e435cb569
rev   line source
2
97d2c8869c39 First prototype implementation of table view and player
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1 /* Copyright (C) 2014 by Intevation GmbH
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2 *
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3 * This file is Free Software under the GNU GPL (v>=2)
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4 * and comes with ABSOLUTELY NO WARRANTY!
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5 * See LICENSE.txt for details.
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6 */
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7 #include "pngplayer.h"
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8 #include "constants.h"
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9 #include "imagelabel.h"
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10 #include <QVBoxLayout>
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11 #include <QPixmap>
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12 #include <QLabel>
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13 #include <QPushButton>
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14 #include <QHBoxLayout>
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15 #include <QSlider>
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16
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17 #include <QDebug>
2
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18
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19 PNGPlayer::PNGPlayer(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f) {
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20 setupGUI();
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21 }
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22
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23 void PNGPlayer::setupGUI() {
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24 QVBoxLayout *baseLayout = new QVBoxLayout;
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25 mPNGLabel = new ImageLabel;
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26 mPNGLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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27
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28 QHBoxLayout *controlArea = new QHBoxLayout;
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29 QHBoxLayout *controlBtns = new QHBoxLayout;
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30 controlArea->addLayout(controlBtns);
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31
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32 QPushButton *firstBtn = new QPushButton("First");
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33 controlBtns->addWidget(firstBtn);
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34 connect(firstBtn, &QPushButton::clicked, this, &PNGPlayer::firstClicked);
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35
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36 QPushButton *prevBtn = new QPushButton("Prev");
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37 controlBtns->addWidget(prevBtn);
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38 connect(prevBtn, &QPushButton::clicked, this, &PNGPlayer::back);
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39
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40 mPlayBtn = new QPushButton("Play");
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41 mPlayBtn->setCheckable(true);
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42 controlBtns->addWidget(mPlayBtn);
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43 connect(mPlayBtn, &QPushButton::clicked, this, &PNGPlayer::togglePlay);
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44
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45 QPushButton *nextBtn = new QPushButton("Next");
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46 connect(nextBtn, &QPushButton::clicked, this, &PNGPlayer::advance);
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47 controlBtns->addWidget(nextBtn);
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48
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49 QPushButton *lastBtn = new QPushButton("Last");
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50 controlBtns->addWidget(lastBtn);
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51 connect(lastBtn, &QPushButton::clicked, this, &PNGPlayer::lastClicked);
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52
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53 mSlider = new QSlider(Qt::Horizontal);
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54 mSlider->setTickPosition(QSlider::TicksBelow);
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55 connect(mSlider, &QSlider::valueChanged, this, &PNGPlayer::sliderChanged);
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56 connect(mSlider, &QSlider::sliderPressed, this, &PNGPlayer::sliderPressed);
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57 connect(mSlider, &QSlider::sliderReleased, this, &PNGPlayer::sliderReleased);
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58
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59 QVBoxLayout *speedInfoArea = new QVBoxLayout;
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60 QHBoxLayout *speedArea = new QHBoxLayout;
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61 speedInfoArea->addLayout(speedArea);
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62
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63 QLabel *speedLabel = new QLabel(tr("Speed:"));
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64 speedArea->addWidget(speedLabel);
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65
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66 mSpeedSlider = new QSlider(Qt::Horizontal);
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67 mSpeedSlider->setMaximum(10000);
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68 mSpeedSlider->setTickInterval(500);
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69 mSpeedSlider->setTickPosition(QSlider::TicksBelow);
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70 speedArea->addWidget(mSpeedSlider);
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71
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72 mCurSpeedLabel = new QLabel;
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73 speedArea->addWidget(mCurSpeedLabel);
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74 speedArea->addStretch(-1);
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75
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76 mPositionLabel = new QLabel;
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77 speedInfoArea->addWidget(mPositionLabel);
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78
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79 controlArea->addLayout(speedInfoArea);
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80
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81 baseLayout->addWidget(mPNGLabel);
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82 baseLayout->addLayout(controlArea);
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83 baseLayout->addWidget(mSlider);
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84
2
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85 connect(&mAdvanceTimer, SIGNAL(timeout()), this, SIGNAL(advance()));
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86 setLayout(baseLayout);
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87 }
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88
3
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89 void PNGPlayer::showPicture(const QString& fileName, int current, int max,
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90 const QDateTime& timestamp) {
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91 QPixmap pic(mBaseDir.filePath(fileName));
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92 /* If this is too slow we could use a pixmap cache here and do
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93 * some intelligent preloading */
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94 if (pic.isNull()) {
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95 emit error(tr("Failed to load picture: '%1'").arg(fileName));
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96 return;
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97 }
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98 mPNGLabel->setPixmap(pic);
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99 updatePositions(current, max, timestamp);
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100 }
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101
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102 void PNGPlayer::updatePositions(int current, int max, const QDateTime& timestamp) {
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103 mMax = max;
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104 mSlider->blockSignals(true); /* We only want user generated changes */
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105 mSlider->setValue(current);
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106 mSlider->blockSignals(false);
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107 mSlider->setMaximum(max);
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108 mPositionLabel->setText("<b>" + tr("Screenshot Nr.:") + " </b>" +
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109 QString("%1 (%2)").arg(current).arg(max) + " / <b>" +
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110 tr("Timestamp:") + " </b>" + timestamp.toString(LONG_DATE_FORMAT));
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111
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112 if (mMax == current && mAdvanceTimer.isActive()) {
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113 togglePlay();
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114 }
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115 }
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116
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117 void PNGPlayer::setSpeed(int mSecsPerPicture) {
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118 if (mSecsPerPicture == 1000) {
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119 mCurSpeedLabel->setText(tr("%1 second per Picture").
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120 arg(mSecsPerPicture / 1000));
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121 } else {
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122 mCurSpeedLabel->setText(tr("%1 seconds per Picture").
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123 arg(mSecsPerPicture / 1000));
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124 }
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125 mSpeedSlider->setValue(mSecsPerPicture);
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126 mAdvanceTimer.setInterval(mSecsPerPicture);
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127 }
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128
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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129 void PNGPlayer::togglePlay() {
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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130 if (mAdvanceTimer.isActive()) {
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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131 mAdvanceTimer.stop();
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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132 mPlayBtn->setText("Play");
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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133 mPlayBtn->setChecked(false);
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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134 } else {
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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135 mAdvanceTimer.start();
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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136 mPlayBtn->setText("Pause");
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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137 mPlayBtn->setChecked(true);
248d5d1cdb38 Add functionalty to control buttons and make picture resizable
Andre Heinecke <andre.heinecke@intevation.de>
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138 emit advance();
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Andre Heinecke <andre.heinecke@intevation.de>
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139 }
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Andre Heinecke <andre.heinecke@intevation.de>
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140 }
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Andre Heinecke <andre.heinecke@intevation.de>
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141
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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142 void PNGPlayer::sliderChanged() {
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Andre Heinecke <andre.heinecke@intevation.de>
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143 qDebug() << "Slider moved. ";
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Andre Heinecke <andre.heinecke@intevation.de>
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144 emit jumpToFrame(mSlider->value());
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Andre Heinecke <andre.heinecke@intevation.de>
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145 }
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Andre Heinecke <andre.heinecke@intevation.de>
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146
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Andre Heinecke <andre.heinecke@intevation.de>
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147 void PNGPlayer::sliderPressed() {
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Andre Heinecke <andre.heinecke@intevation.de>
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148 qDebug() << "Slider pressed. Deactivating timer. ";
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Andre Heinecke <andre.heinecke@intevation.de>
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149 mAdvanceTimer.stop();
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Andre Heinecke <andre.heinecke@intevation.de>
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150 }
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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151
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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152 void PNGPlayer::sliderReleased() {
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Andre Heinecke <andre.heinecke@intevation.de>
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153 if (mPlayBtn->isChecked()) {
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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154 mAdvanceTimer.start();
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Andre Heinecke <andre.heinecke@intevation.de>
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155 }
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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156 }
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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157
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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158 void PNGPlayer::firstClicked() {
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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159 emit jumpToFrame(0);
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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160 }
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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161
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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162 void PNGPlayer::lastClicked() {
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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163 emit jumpToFrame(mMax);
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 2
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164 }
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