Initial commit.

src/covermanager/albumcoverexporter.cpp

@@ -0,0 +1,82 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry 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.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include "config.h"
+
+#include <QFile>
+#include <QThreadPool>
+
+#include "albumcoverexporter.h"
+#include "coverexportrunnable.h"
+#include "core/song.h"
+
+const int AlbumCoverExporter::kMaxConcurrentRequests = 3;
+
+AlbumCoverExporter::AlbumCoverExporter(QObject *parent)
+    : QObject(parent),
+      thread_pool_(new QThreadPool(this)),
+      exported_(0),
+      skipped_(0),
+      all_(0) {
+  thread_pool_->setMaxThreadCount(kMaxConcurrentRequests);
+}
+
+void AlbumCoverExporter::SetDialogResult(const AlbumCoverExport::DialogResult& dialog_result) {
+  dialog_result_ = dialog_result;
+}
+
+void AlbumCoverExporter::AddExportRequest(Song song) {
+  requests_.append(new CoverExportRunnable(dialog_result_, song));
+  all_ = requests_.count();
+}
+
+void AlbumCoverExporter::Cancel() { requests_.clear(); }
+
+void AlbumCoverExporter::StartExporting() {
+  exported_ = 0;
+  skipped_ = 0;
+  AddJobsToPool();
+}
+
+void AlbumCoverExporter::AddJobsToPool() {
+
+  while (!requests_.isEmpty() && thread_pool_->activeThreadCount() < thread_pool_->maxThreadCount()) {
+    CoverExportRunnable *runnable = requests_.dequeue();
+
+    connect(runnable, SIGNAL(CoverExported()), SLOT(CoverExported()));
+    connect(runnable, SIGNAL(CoverSkipped()), SLOT(CoverSkipped()));
+
+    thread_pool_->start(runnable);
+  }
+
+}
+
+void AlbumCoverExporter::CoverExported() {
+  exported_++;
+  emit AlbumCoversExportUpdate(exported_, skipped_, all_);
+  AddJobsToPool();
+}
+
+void AlbumCoverExporter::CoverSkipped() {
+  skipped_++;
+  emit AlbumCoversExportUpdate(exported_, skipped_, all_);
+  AddJobsToPool();
+}
+