Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 283 insertions, 0 deletions

diff --git a/juk/coverinfo.cpp b/juk/coverinfo.cpp
new file mode 100644
index 00000000..243bc429
--- /dev/null
+++ b/juk/coverinfo.cpp
@@ -0,0 +1,283 @@
+/***************************************************************************
+    copyright            : (C) 2004 Nathan Toone
+                         : (C) 2005 Michael Pyne <michael.pyne@kdemail.net>
+    email                : nathan@toonetown.com
+***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program 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 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include <kglobal.h>
+#include <kapplication.h>
+#include <kstandarddirs.h>
+#include <kdebug.h>
+
+#include <qregexp.h>
+#include <qlayout.h>
+#include <qlabel.h>
+#include <qcursor.h>
+
+#include "collectionlist.h"
+#include "playlistsearch.h"
+#include "playlistitem.h"
+#include "coverinfo.h"
+#include "tag.h"
+
+struct CoverPopup : public QWidget
+{
+    CoverPopup(const QPixmap &image, const QPoint &p) :
+        QWidget(0, 0, WDestructiveClose | WX11BypassWM)
+    {
+        QHBoxLayout *layout = new QHBoxLayout(this);
+        QLabel *label = new QLabel(this);
+
+        layout->addWidget(label);
+        label->setFrameStyle(QFrame::Box | QFrame::Raised);
+        label->setLineWidth(1);
+        label->setPixmap(image);
+
+        setGeometry(p.x(), p.y(), label->width(), label->height());
+        show();
+    }
+    virtual void leaveEvent(QEvent *) { close(); }
+    virtual void mouseReleaseEvent(QMouseEvent *) { close(); }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// public members
+////////////////////////////////////////////////////////////////////////////////
+
+
+CoverInfo::CoverInfo(const FileHandle &file) :
+    m_file(file),
+    m_hasCover(false),
+    m_haveCheckedForCover(false),
+    m_coverKey(CoverManager::NoMatch),
+    m_needsConverting(false)
+{
+
+}
+
+bool CoverInfo::hasCover()
+{
+    if(m_haveCheckedForCover)
+        return m_hasCover;
+
+    m_haveCheckedForCover = true;
+
+    // Check for new-style covers.  First let's determine what our coverKey is
+    // if it's not already set, as that's also tracked by the CoverManager.
+    if(m_coverKey == CoverManager::NoMatch)
+        m_coverKey = CoverManager::idForTrack(m_file.absFilePath());
+
+    // We were assigned a key, let's see if we already have a cover.  Notice
+    // that due to the way the CoverManager is structured, we should have a
+    // cover if we have a cover key.  If we don't then either there's a logic
+    // error, or the user has been mucking around where they shouldn't.
+    if(m_coverKey != CoverManager::NoMatch)
+        m_hasCover = CoverManager::hasCover(m_coverKey);
+
+    // We *still* don't have it?  Check the old-style covers then.
+    if(!m_hasCover) {
+        m_hasCover = QFile(coverLocation(FullSize)).exists();
+
+        if(m_hasCover)
+            m_needsConverting = true;
+    }
+
+    return m_hasCover;
+}
+
+void CoverInfo::clearCover()
+{
+    m_hasCover = false;
+
+    // Yes, we have checked, and we don't have it. ;)
+    m_haveCheckedForCover = true;
+
+    m_needsConverting = false;
+
+    // We don't need to call removeCover because the CoverManager will
+    // automatically unlink the cover if we were the last track to use it.
+    CoverManager::setIdForTrack(m_file.absFilePath(), CoverManager::NoMatch);
+    m_coverKey = CoverManager::NoMatch;
+}
+
+void CoverInfo::setCover(const QImage &image)
+{
+    if(image.isNull())
+        return;
+
+    m_haveCheckedForCover = true;
+    m_needsConverting = false;
+    m_hasCover = true;
+
+    QPixmap cover;
+    cover.convertFromImage(image);
+
+    // If we use replaceCover we'll change the cover for every other track
+    // with the same coverKey, which we don't want since that case will be
+    // handled by Playlist.  Instead just replace this track's cover.
+    m_coverKey = CoverManager::addCover(cover, m_file.tag()->artist(), m_file.tag()->album());
+    if(m_coverKey != CoverManager::NoMatch)
+        CoverManager::setIdForTrack(m_file.absFilePath(), m_coverKey);
+}
+
+void CoverInfo::setCoverId(coverKey id)
+{
+    m_coverKey = id;
+    m_haveCheckedForCover = true;
+    m_needsConverting = false;
+    m_hasCover = id != CoverManager::NoMatch;
+
+    // Inform CoverManager of the change.
+    CoverManager::setIdForTrack(m_file.absFilePath(), m_coverKey);
+}
+
+void CoverInfo::applyCoverToWholeAlbum(bool overwriteExistingCovers) const
+{
+    QString artist = m_file.tag()->artist();
+    QString album = m_file.tag()->album();
+    PlaylistSearch::ComponentList components;
+    ColumnList columns;
+
+    columns.append(PlaylistItem::ArtistColumn);
+    components.append(PlaylistSearch::Component(artist, false, columns, PlaylistSearch::Component::Exact));
+
+    columns.clear();
+    columns.append(PlaylistItem::AlbumColumn);
+    components.append(PlaylistSearch::Component(album, false, columns, PlaylistSearch::Component::Exact));
+
+    PlaylistList playlists;
+    playlists.append(CollectionList::instance());
+
+    PlaylistSearch search(playlists, components, PlaylistSearch::MatchAll);
+
+    // Search done, iterate through results.
+
+    PlaylistItemList results = search.matchedItems();
+    PlaylistItemList::ConstIterator it = results.constBegin();
+    for(; it != results.constEnd(); ++it) {
+
+        // Don't worry about files that somehow already have a tag,
+        // unless the coversion is forced.
+        if(!overwriteExistingCovers && !(*it)->file().coverInfo()->m_needsConverting)
+            continue;
+
+        kdDebug(65432) << "Setting cover for: " << *it << endl;
+        (*it)->file().coverInfo()->setCoverId(m_coverKey);
+    }
+}
+
+QPixmap CoverInfo::pixmap(CoverSize size) const
+{
+    if(m_needsConverting)
+        convertOldStyleCover();
+
+    if(m_coverKey == CoverManager::NoMatch)
+        return QPixmap();
+
+    if(size == Thumbnail)
+        return CoverManager::coverFromId(m_coverKey, CoverManager::Thumbnail);
+    else
+        return CoverManager::coverFromId(m_coverKey, CoverManager::FullSize);
+}
+
+void CoverInfo::popup() const
+{
+    QPixmap image = pixmap(FullSize);
+    QPoint mouse  = QCursor::pos();
+    QRect desktop = KApplication::desktop()->screenGeometry(mouse);
+    
+    int x = mouse.x();
+    int y = mouse.y();
+    int height = image.size().height() + 4;
+    int width  = image.size().width() + 4;
+
+    // Detect the right direction to pop up (always towards the center of the
+    // screen), try to pop up with the mouse pointer 10 pixels into the image in
+    // both directions.  If we're too close to the screen border for this margin,
+    // show it at the screen edge, accounting for the four pixels (two on each
+    // side) for the window border.
+
+    if(x - desktop.x() < desktop.width() / 2)
+        x = (x - desktop.x() < 10) ? desktop.x() : (x - 10);
+    else
+        x = (x - desktop.x() > desktop.width() - 10) ? desktop.width() - width +desktop.x() : (x - width + 10);
+
+    if(y - desktop.y() < desktop.height() / 2)
+        y = (y - desktop.y() < 10) ? desktop.y() : (y - 10);
+    else
+        y = (y - desktop.y() > desktop.height() - 10) ? desktop.height() - height + desktop.y() : (y - height + 10);
+
+    new CoverPopup(image, QPoint(x, y));
+}
+
+/**
+ * DEPRECATED
+ */
+QString CoverInfo::coverLocation(CoverSize size) const
+{
+    QString fileName(QFile::encodeName(m_file.tag()->artist() + " - " + m_file.tag()->album()));
+    QRegExp maskedFileNameChars("[ /?:\"]");
+
+    fileName.replace(maskedFileNameChars, "_");
+    fileName.append(".png");
+
+    QString dataDir = KGlobal::dirs()->saveLocation("appdata");
+    QString subDir;
+
+    switch (size) {
+    case FullSize:
+        subDir = "large/";
+        break;
+    default:
+        break;
+    }
+    QString fileLocation = dataDir + "covers/" + subDir + fileName.lower();
+
+    return fileLocation;
+}
+
+bool CoverInfo::convertOldStyleCover() const
+{
+    // Ah, old-style cover.  Let's transfer it to the new system.
+    kdDebug() << "Found old style cover for " << m_file.absFilePath() << endl;
+
+    QString artist = m_file.tag()->artist();
+    QString album = m_file.tag()->album();
+    QString oldLocation = coverLocation(FullSize);
+    m_coverKey = CoverManager::addCover(oldLocation, artist, album);
+
+    m_needsConverting = false;
+
+    if(m_coverKey != CoverManager::NoMatch) {
+        CoverManager::setIdForTrack(m_file.absFilePath(), m_coverKey);
+
+        // Now let's also set the ID for the tracks matching the track and
+        // artist at this point so that the conversion is complete, otherwise
+        // we can't tell apart the "No cover on purpose" and "Has no cover yet"
+        // possibilities.
+
+        applyCoverToWholeAlbum();
+
+        // If we convert we need to remove the old cover otherwise we'll find
+        // it later if the user un-sets the new cover.
+        if(!QFile::remove(oldLocation))
+            kdError(65432) << "Unable to remove converted cover at " << oldLocation << endl;
+
+        return true;
+    }
+    else {
+        kdDebug() << "We were unable to replace the old style cover.\n";
+        return false;
+    }
+}
+
+// vim: set et sw=4 ts=8: