147 lines
4.2 KiB
C++
147 lines
4.2 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2013 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "backdropcreator.h"
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#include "covers.h"
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#include "thread.h"
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#include <QApplication>
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#include <QPainter>
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#include <QDebug>
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#include <stdlib.h>
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#ifdef Q_OS_WIN32
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#include <time.h>
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#endif
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#include <QDebug>
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static bool debugEnabled=false;
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#define DBUG if (debugEnabled) qWarning() << metaObject()->className() << __FUNCTION__
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void BackdropCreator::enableDebug()
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{
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debugEnabled=true;
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}
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BackdropCreator::BackdropCreator()
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: QObject(0)
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{
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#ifdef Q_OS_WIN32
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srand((unsigned int)time(0));
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#endif
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connect(Covers::self(), SIGNAL(cover(const Song &, const QImage &, const QString &)), SLOT(coverRetrieved(const Song &, const QImage &, const QString &)));
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imageSize=QApplication::fontMetrics().height()*12;
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thread=new Thread(metaObject()->className());
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moveToThread(thread);
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thread->start();
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}
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BackdropCreator::~BackdropCreator()
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{
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thread->stop();
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}
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void BackdropCreator::create(const QString &artist, const QList<Song> &songs)
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{
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DBUG << artist << songs.count();
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requestedArtist=artist;
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images.clear();
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requested.clear();
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foreach (const Song &s, songs) {
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Covers::Image img=Covers::self()->requestImage(s);
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if (!img.img.isNull()) {
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images.append(img.img.scaled(imageSize, imageSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
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} else {
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requested.insert(s);
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}
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}
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if (requested.isEmpty()) {
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createImage();
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}
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}
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void BackdropCreator::coverRetrieved(const Song &s, const QImage &img, const QString &file)
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{
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DBUG << requestedArtist << s.albumArtist();
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Q_UNUSED(file)
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if (requested.contains(s)) {
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requested.remove(s);
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if (!img.isNull()) {
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images.append(img.scaled(imageSize, imageSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
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}
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if (requested.isEmpty()) {
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createImage();
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}
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}
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}
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void BackdropCreator::createImage()
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{
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DBUG << images.count();
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QImage backdrop;
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switch (images.count()) {
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case 0:
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break;
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case 1:
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backdrop=images.at(0);
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break;
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case 2: {
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backdrop=QImage(2*imageSize, 2*imageSize, QImage::Format_RGB32);
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QPainter p(&backdrop);
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p.drawImage(0, 0, images.at(0));
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p.drawImage(0, imageSize, images.at(1));
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p.drawImage(imageSize, imageSize, images.at(0));
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p.drawImage(imageSize, 0, images.at(1));
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break;
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}
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default: {
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static const int constHCount=10;
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static const int constVCount=5;
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backdrop=QImage(constHCount*imageSize, constVCount*imageSize, QImage::Format_RGB32);
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QPainter p(&backdrop);
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QList<QImage> toUse=images;
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QList<int> currentLine;
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QList<int> lastLine;
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for (int y=0; y<constVCount; ++y) {
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for (int x=0; x<constHCount; ++x) {
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#ifdef Q_OS_WIN32
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int index=rand()%toUse.count();
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#else
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int index=random()%toUse.count();
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#endif
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p.drawImage(x*imageSize, y*imageSize, toUse.takeAt(index));
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if (toUse.isEmpty()) {
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toUse=images;
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}
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currentLine.append(index);
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}
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lastLine=currentLine;
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currentLine.clear();
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}
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break;
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}
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}
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emit created(requestedArtist, backdrop);
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}
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