andre@2: /* Copyright (C) 2014 by Intevation GmbH
andre@2:  *
andre@2:  * This file is Free Software under the GNU GPL (v>=2)
andre@2:  * and comes with ABSOLUTELY NO WARRANTY!
andre@2:  * See LICENSE.txt for details.
andre@2:  */
andre@2: #include "pngplayer.h"
andre@3: #include "constants.h"
andre@3: #include "imagelabel.h"
andre@2: #include <QVBoxLayout>
andre@2: #include <QPixmap>
andre@2: #include <QLabel>
andre@3: #include <QPushButton>
andre@3: #include <QHBoxLayout>
andre@3: #include <QSlider>
andre@5: #include <QSettings>
andre@10: #include <QApplication>
andre@10: #include <QStyle>
andre@3: 
andre@3: #include <QDebug>
andre@2: 
andre@2: PNGPlayer::PNGPlayer(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f) {
andre@2:     setupGUI();
andre@5:     QSettings settings;
andre@5:     mSpeedSlider->setValue(settings.value(REPLAY_SPEED_KEY, REPLAY_SPEED_DEFAULT).toInt());
andre@5:     speedChanged();
andre@2: }
andre@2: 
andre@2: void PNGPlayer::setupGUI() {
andre@2:     QVBoxLayout *baseLayout = new QVBoxLayout;
andre@3:     mPNGLabel = new ImageLabel;
andre@3:     mPNGLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
andre@3: 
andre@3:     QHBoxLayout *controlArea = new QHBoxLayout;
andre@3:     QHBoxLayout *controlBtns = new QHBoxLayout;
andre@3:     controlArea->addLayout(controlBtns);
andre@10:     controlArea->addStretch(-1);
andre@3: 
andre@10:     QPushButton *firstBtn = new QPushButton;
andre@10:     firstBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSkipBackward));
andre@3:     controlBtns->addWidget(firstBtn);
andre@3:     connect(firstBtn, &QPushButton::clicked, this, &PNGPlayer::firstClicked);
andre@3: 
andre@10:     QPushButton *prevBtn = new QPushButton;
andre@10:     prevBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSeekBackward));
andre@3:     controlBtns->addWidget(prevBtn);
andre@3:     connect(prevBtn, &QPushButton::clicked, this, &PNGPlayer::back);
andre@3: 
andre@10:     mPlayBtn = new QPushButton;
andre@3:     mPlayBtn->setCheckable(true);
andre@10:     mPlayBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaPlay));
andre@3:     controlBtns->addWidget(mPlayBtn);
andre@3:     connect(mPlayBtn, &QPushButton::clicked, this, &PNGPlayer::togglePlay);
andre@3: 
andre@10:     QPushButton *nextBtn = new QPushButton;
andre@10:     nextBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSeekForward));
andre@3:     connect(nextBtn, &QPushButton::clicked, this, &PNGPlayer::advance);
andre@3:     controlBtns->addWidget(nextBtn);
andre@3: 
andre@10:     QPushButton *lastBtn = new QPushButton;
andre@10:     lastBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaSkipForward));
andre@3:     controlBtns->addWidget(lastBtn);
andre@3:     connect(lastBtn, &QPushButton::clicked, this, &PNGPlayer::lastClicked);
andre@3: 
andre@3:     mSlider = new QSlider(Qt::Horizontal);
andre@3:     mSlider->setTickPosition(QSlider::TicksBelow);
andre@3:     connect(mSlider, &QSlider::valueChanged, this, &PNGPlayer::sliderChanged);
andre@3:     connect(mSlider, &QSlider::sliderPressed, this, &PNGPlayer::sliderPressed);
andre@3:     connect(mSlider, &QSlider::sliderReleased, this, &PNGPlayer::sliderReleased);
andre@3: 
andre@3:     QVBoxLayout *speedInfoArea = new QVBoxLayout;
andre@3:     QHBoxLayout *speedArea = new QHBoxLayout;
andre@3:     speedInfoArea->addLayout(speedArea);
andre@3: 
andre@3:     QLabel *speedLabel = new QLabel(tr("Speed:"));
andre@3:     speedArea->addWidget(speedLabel);
andre@3: 
andre@3:     mSpeedSlider = new QSlider(Qt::Horizontal);
andre@5:     mSpeedSlider->setMaximum(10);
andre@5:     mSpeedSlider->setTickInterval(1);
andre@3:     mSpeedSlider->setTickPosition(QSlider::TicksBelow);
andre@5:     mSpeedSlider->setTracking(false);
andre@5:     mSpeedSlider->setInvertedAppearance(true);
andre@5: 
andre@3:     speedArea->addWidget(mSpeedSlider);
andre@5:     connect(mSpeedSlider, &QSlider::valueChanged, this, &PNGPlayer::speedChanged);
andre@3: 
andre@3:     mCurSpeedLabel = new QLabel;
andre@3:     speedArea->addWidget(mCurSpeedLabel);
andre@3:     speedArea->addStretch(-1);
andre@3: 
andre@3:     mPositionLabel = new QLabel;
andre@3:     speedInfoArea->addWidget(mPositionLabel);
andre@3: 
andre@3:     controlArea->addLayout(speedInfoArea);
andre@3: 
andre@2:     baseLayout->addWidget(mPNGLabel);
andre@3:     baseLayout->addLayout(controlArea);
andre@3:     baseLayout->addWidget(mSlider);
andre@3: 
andre@2:     connect(&mAdvanceTimer, SIGNAL(timeout()), this, SIGNAL(advance()));
andre@2:     setLayout(baseLayout);
andre@2: }
andre@2: 
andre@3: void PNGPlayer::showPicture(const QString& fileName, int current, int max,
andre@3:         const QDateTime& timestamp) {
andre@2:     QPixmap pic(mBaseDir.filePath(fileName));
andre@2:     /* If this is too slow we could use a pixmap cache here and do
andre@2:      * some intelligent preloading */
andre@2:     if (pic.isNull()) {
andre@20:         qWarning() << "Failed to load picture: " << fileName;
andre@7: //        emit error(tr("Failed to load picture: '%1'").arg(fileName));
andre@2:         return;
andre@2:     }
andre@2:     mPNGLabel->setPixmap(pic);
andre@3:     updatePositions(current, max, timestamp);
andre@2: }
andre@3: 
andre@3: void PNGPlayer::updatePositions(int current, int max, const QDateTime& timestamp) {
andre@3:     mMax = max;
andre@3:     mSlider->blockSignals(true); /* We only want user generated changes */
andre@3:     mSlider->setValue(current);
andre@3:     mSlider->blockSignals(false);
andre@3:     mSlider->setMaximum(max);
andre@3:     mPositionLabel->setText("<b>" + tr("Screenshot Nr.:") + " </b>" +
andre@3:             QString("%1 (%2)").arg(current).arg(max) + " / <b>" +
andre@8:         tr("Timestamp:") + " </b>" + (timestamp.isValid() ?
andre@8:             timestamp.toString(LONG_DATE_FORMAT) : tr("Unknown")));
andre@3: 
andre@3:     if (mMax == current && mAdvanceTimer.isActive()) {
andre@3:         togglePlay();
andre@3:     }
andre@3: }
andre@3: 
andre@3: void PNGPlayer::setSpeed(int mSecsPerPicture) {
andre@3:     if (mSecsPerPicture == 1000) {
andre@3:         mCurSpeedLabel->setText(tr("%1 second per Picture").
andre@5:                                 arg(mSecsPerPicture / 1000.));
andre@3:     } else {
andre@3:         mCurSpeedLabel->setText(tr("%1 seconds per Picture").
andre@5:                                 arg(mSecsPerPicture / 1000.));
andre@3:     }
andre@3:     mAdvanceTimer.setInterval(mSecsPerPicture);
andre@3: }
andre@3: 
andre@3: void PNGPlayer::togglePlay() {
andre@3:     if (mAdvanceTimer.isActive()) {
andre@3:         mAdvanceTimer.stop();
andre@3:         mPlayBtn->setChecked(false);
andre@10:         mPlayBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaPlay));
andre@3:     } else {
andre@3:         mAdvanceTimer.start();
andre@3:         mPlayBtn->setChecked(true);
andre@10:         mPlayBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_MediaPause));
andre@3:         emit advance();
andre@3:     }
andre@3: }
andre@3: 
andre@3: void PNGPlayer::sliderChanged() {
andre@3:     qDebug() << "Slider moved. ";
andre@3:     emit jumpToFrame(mSlider->value());
andre@3: }
andre@3: 
andre@3: void PNGPlayer::sliderPressed() {
andre@3:     qDebug() << "Slider pressed. Deactivating timer. ";
andre@3:     mAdvanceTimer.stop();
andre@3: }
andre@3: 
andre@3: void PNGPlayer::sliderReleased() {
andre@3:     if (mPlayBtn->isChecked()) {
andre@3:         mAdvanceTimer.start();
andre@3:     }
andre@3: }
andre@3: 
andre@3: void PNGPlayer::firstClicked() {
andre@3:     emit jumpToFrame(0);
andre@3: }
andre@3: 
andre@3: void PNGPlayer::lastClicked() {
andre@3:     emit jumpToFrame(mMax);
andre@3: }
andre@5: 
andre@5: void PNGPlayer::speedChanged() {
andre@5:     if (mSpeedSlider->value()) {
andre@5:         setSpeed(mSpeedSlider->value() * REPLAY_SPEED_STEP_MS);
andre@5:     } else {
andre@5:         setSpeed(REPLAY_SPEED_STEP_MS / 2);
andre@5:     }
andre@5:     QSettings settings;
andre@5:     settings.setValue(REPLAY_SPEED_KEY, mSpeedSlider->value());
andre@5: }