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Clementine-audio-player-Mac.../src/ui/albumcoversearcher.cpp

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/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "albumcoversearcher.h"
#include <QKeyEvent>
#include <QListWidgetItem>
#include <QPainter>
#include <QStandardItemModel>
#include "core/application.h"
#include "core/logging.h"
#include "core/utilities.h"
#include "covers/albumcoverfetcher.h"
#include "covers/albumcoverloader.h"
#include "ui_albumcoversearcher.h"
#include "widgets/forcescrollperpixel.h"
#include "widgets/groupediconview.h"
const int SizeOverlayDelegate::kMargin = 4;
const int SizeOverlayDelegate::kPaddingX = 3;
const int SizeOverlayDelegate::kPaddingY = 1;
const qreal SizeOverlayDelegate::kBorder = 5.0;
const qreal SizeOverlayDelegate::kFontPointSize = 7.5;
const int SizeOverlayDelegate::kBorderAlpha = 200;
const int SizeOverlayDelegate::kBackgroundAlpha = 175;
SizeOverlayDelegate::SizeOverlayDelegate(QObject* parent)
: QStyledItemDelegate(parent) {}
void SizeOverlayDelegate::paint(QPainter* painter,
const QStyleOptionViewItem& option,
const QModelIndex& index) const {
QStyledItemDelegate::paint(painter, option, index);
if (!index.data(AlbumCoverSearcher::Role_ImageFetchFinished).toBool()) {
return;
}
const QSize size = index.data(AlbumCoverSearcher::Role_ImageSize).toSize();
const QString text = Utilities::PrettySize(size);
QFont font(option.font);
font.setPointSizeF(kFontPointSize);
font.setBold(true);
const QFontMetrics metrics(font);
const int text_width = metrics.width(text);
const QRect icon_rect(option.rect.left(), option.rect.top(),
option.rect.width(), option.rect.width());
const QRect background_rect(
icon_rect.right() - kMargin - text_width - kPaddingX * 2,
icon_rect.bottom() - kMargin - metrics.height() - kPaddingY * 2,
text_width + kPaddingX * 2, metrics.height() + kPaddingY * 2);
const QRect text_rect(background_rect.left() + kPaddingX,
background_rect.top() + kPaddingY, text_width,
metrics.height());
painter->save();
painter->setRenderHint(QPainter::Antialiasing);
painter->setPen(QColor(0, 0, 0, kBorderAlpha));
painter->setBrush(QColor(0, 0, 0, kBackgroundAlpha));
painter->drawRoundedRect(background_rect, kBorder, kBorder);
painter->setPen(Qt::white);
painter->setFont(font);
painter->drawText(text_rect, text);
painter->restore();
}
AlbumCoverSearcher::AlbumCoverSearcher(const QIcon& no_cover_icon,
Application* app, QWidget* parent)
: QDialog(parent),
ui_(new Ui_AlbumCoverSearcher),
app_(app),
model_(new QStandardItemModel(this)),
no_cover_icon_(no_cover_icon),
fetcher_(nullptr),
id_(0) {
setWindowModality(Qt::WindowModal);
ui_->setupUi(this);
ui_->busy->hide();
ui_->covers->set_header_text(tr("Covers from %1"));
ui_->covers->AddSortSpec(Role_ImageDimensions, Qt::DescendingOrder);
ui_->covers->setItemDelegate(new SizeOverlayDelegate(this));
ui_->covers->setModel(model_);
options_.scale_output_image_ = false;
options_.pad_output_image_ = false;
connect(app_->album_cover_loader(), SIGNAL(ImageLoaded(quint64, QImage)),
SLOT(ImageLoaded(quint64, QImage)));
connect(ui_->search, SIGNAL(clicked()), SLOT(Search()));
connect(ui_->covers, SIGNAL(doubleClicked(QModelIndex)),
SLOT(CoverDoubleClicked(QModelIndex)));
new ForceScrollPerPixel(ui_->covers, this);
ui_->buttonBox->button(QDialogButtonBox::Cancel)
->setShortcut(QKeySequence::Close);
}
AlbumCoverSearcher::~AlbumCoverSearcher() { delete ui_; }
void AlbumCoverSearcher::Init(AlbumCoverFetcher* fetcher) {
fetcher_ = fetcher;
connect(fetcher_,
SIGNAL(SearchFinished(quint64, CoverSearchResults,
CoverSearchStatistics)),
SLOT(SearchFinished(quint64, CoverSearchResults)));
}
QImage AlbumCoverSearcher::Exec(const QString& artist, const QString& album) {
ui_->artist->setText(artist);
ui_->album->setText(album);
ui_->artist->setFocus();
if (!artist.isEmpty() || !album.isEmpty()) {
Search();
}
if (exec() == QDialog::Rejected) return QImage();
QModelIndex selected = ui_->covers->currentIndex();
if (!selected.isValid() || !selected.data(Role_ImageFetchFinished).toBool())
return QImage();
QIcon icon = selected.data(Qt::DecorationRole).value<QIcon>();
if (icon.cacheKey() == no_cover_icon_.cacheKey()) return QImage();
return icon.pixmap(icon.availableSizes()[0]).toImage();
}
void AlbumCoverSearcher::Search() {
model_->clear();
cover_loading_tasks_.clear();
if (ui_->album->isEnabled()) {
id_ = fetcher_->SearchForCovers(ui_->artist->text(), ui_->album->text());
ui_->search->setText(tr("Abort"));
ui_->busy->show();
ui_->artist->setEnabled(false);
ui_->album->setEnabled(false);
ui_->covers->setEnabled(false);
} else {
fetcher_->Clear();
ui_->search->setText(tr("Search"));
ui_->busy->hide();
ui_->search->setEnabled(true);
ui_->artist->setEnabled(true);
ui_->album->setEnabled(true);
ui_->covers->setEnabled(true);
}
}
void AlbumCoverSearcher::SearchFinished(quint64 id,
const CoverSearchResults& results) {
if (id != id_) return;
ui_->search->setEnabled(true);
ui_->artist->setEnabled(true);
ui_->album->setEnabled(true);
ui_->covers->setEnabled(true);
ui_->search->setText(tr("Search"));
id_ = 0;
for (const CoverSearchResult& result : results) {
if (result.image_url.isEmpty()) continue;
quint64 id = app_->album_cover_loader()->LoadImageAsync(
options_, result.image_url.toString(), QString());
QStandardItem* item = new QStandardItem;
item->setIcon(no_cover_icon_);
item->setText(result.description);
item->setData(result.image_url, Role_ImageURL);
item->setData(id, Role_ImageRequestId);
item->setData(false, Role_ImageFetchFinished);
item->setData(QVariant(Qt::AlignTop | Qt::AlignHCenter),
Qt::TextAlignmentRole);
item->setData(result.provider, GroupedIconView::Role_Group);
model_->appendRow(item);
cover_loading_tasks_[id] = item;
}
if (cover_loading_tasks_.isEmpty()) ui_->busy->hide();
}
void AlbumCoverSearcher::ImageLoaded(quint64 id, const QImage& image) {
if (!cover_loading_tasks_.contains(id)) return;
QStandardItem* item = cover_loading_tasks_.take(id);
if (cover_loading_tasks_.isEmpty()) ui_->busy->hide();
if (image.isNull()) {
model_->removeRow(item->row());
return;
}
QIcon icon(QPixmap::fromImage(image));
// Create a pixmap that's padded and exactly the right size for the icon.
QImage scaled_image(image.scaled(ui_->covers->iconSize(), Qt::KeepAspectRatio,
Qt::SmoothTransformation));
QImage padded_image(ui_->covers->iconSize(),
QImage::Format_ARGB32_Premultiplied);
padded_image.fill(0);
QPainter p(&padded_image);
p.drawImage((padded_image.width() - scaled_image.width()) / 2,
(padded_image.height() - scaled_image.height()) / 2,
scaled_image);
p.end();
icon.addPixmap(QPixmap::fromImage(padded_image));
item->setData(true, Role_ImageFetchFinished);
item->setData(image.width() * image.height(), Role_ImageDimensions);
item->setData(image.size(), Role_ImageSize);
item->setIcon(icon);
}
void AlbumCoverSearcher::keyPressEvent(QKeyEvent* e) {
if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
e->ignore();
return;
}
QDialog::keyPressEvent(e);
}
void AlbumCoverSearcher::CoverDoubleClicked(const QModelIndex& index) {
if (index.isValid()) accept();
}
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