media-sound/musescore: fixed compilation against qt 5.14

Closes: https://bugs.gentoo.org/703706
Package-Manager: Portage-2.3.84, Repoman-2.3.20
Signed-off-by: Miroslav Šulc <fordfrog@gentoo.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/media-sound/musescore/files/5583.patch b/media-sound/musescore/files/5583.patch
new file mode 100644
index 000000000000..da4d0c52d041
--- /dev/null
+++ b/media-sound/musescore/files/5583.patch
@@ -0,0 +1,212 @@
+From 09d138946aad53962ce23298093747f0ce52304f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <jerome.duval@gmail.com>
+Date: Tue, 31 Dec 2019 17:39:34 +0100
+Subject: [PATCH 1/2] Specializes template routines.
+
+Qt 5.14 introduces serialisation/deserialisation for enum classes,
+this results in ambiguous templates between qdatastream.h and preferences.h.
+we specialize everything to workaround this.
+---
+ mscore/preferences.h | 41 ++++++++++++++++++++++++++++++++++++-----
+ 1 file changed, 36 insertions(+), 5 deletions(-)
+
+diff --git a/mscore/preferences.h b/mscore/preferences.h
+index bef3df8536..8c3ac9b0ed 100644
+--- a/mscore/preferences.h
++++ b/mscore/preferences.h
+@@ -233,21 +233,52 @@ extern Preferences preferences;
+ 
+ // Stream operators for enum classes
+ // enum classes don't play well with QSettings without custom serialization
+-template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
+-inline QDataStream &operator<<(QDataStream &out, const T &val)
++inline QDataStream&
++operator<<(QDataStream &out, const Ms::MuseScoreStyleType &val)
+ {
+     return out << static_cast<int>(val);
+ }
+ 
+-template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
+-inline QDataStream &operator>>(QDataStream &in, T &val)
++inline QDataStream&
++operator>>(QDataStream &in, Ms::MuseScoreStyleType &val)
+ {
+     int tmp;
+     in >> tmp;
+-    val = static_cast<T>(tmp);
++    val = static_cast<Ms::MuseScoreStyleType>(tmp);
+     return in;
+ }
+ 
++inline QDataStream&
++operator<<(QDataStream &out, const Ms::SessionStart &val)
++{
++    return out << static_cast<int>(val);
++}
++
++inline QDataStream&
++operator>>(QDataStream &in, Ms::SessionStart &val)
++{
++    int tmp;
++    in >> tmp;
++    val = static_cast<Ms::SessionStart>(tmp);
++    return in;
++}
++
++inline QDataStream&
++operator<<(QDataStream &out, const Ms::MusicxmlExportBreaks &val)
++{
++    return out << static_cast<int>(val);
++}
++
++inline QDataStream&
++operator>>(QDataStream &in, Ms::MusicxmlExportBreaks &val)
++{
++    int tmp;
++    in >> tmp;
++    val = static_cast<Ms::MusicxmlExportBreaks>(tmp);
++    return in;
++}
++
++
+ class PreferenceVisitor {
+    public:
+       virtual void visit(QString key, IntPreference*) = 0;
+
+From 6b759bb5ee7b83fd8a82429e4cdb74279c5d33b6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <jerome.duval@gmail.com>
+Date: Tue, 31 Dec 2019 17:42:04 +0100
+Subject: [PATCH 2/2] fix warnings: replace QString::null, with QString()
+
+---
+ mscore/capella.cpp               |  2 +-
+ mscore/importmidi/importmidi.cpp |  2 +-
+ mscore/instrdialog.cpp           |  2 +-
+ mscore/musescore.cpp             | 12 ++++++------
+ mscore/musescore.h               |  2 +-
+ mscore/network/loginmanager.cpp  |  2 +-
+ 6 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/mscore/capella.cpp b/mscore/capella.cpp
+index 7144414e32..6243c8cca6 100644
+--- a/mscore/capella.cpp
++++ b/mscore/capella.cpp
+@@ -2708,7 +2708,7 @@ Score::FileError importCapella(MasterScore* score, const QString& name)
+                   QMessageBox::warning(0,
+                      QWidget::tr("Import Capella"),
+                      QWidget::tr("Load failed: %1").arg(cf.error(errNo)),
+-                     QString::null, QWidget::tr("Quit"), QString::null, 0, 1);
++                     QString(), QWidget::tr("Quit"), QString(), 0, 1);
+                   }
+             fp.close();
+             // avoid another error message box
+diff --git a/mscore/importmidi/importmidi.cpp b/mscore/importmidi/importmidi.cpp
+index a5d8894686..8091a83369 100644
+--- a/mscore/importmidi/importmidi.cpp
++++ b/mscore/importmidi/importmidi.cpp
+@@ -1200,7 +1200,7 @@ Score::FileError importMidi(MasterScore *score, const QString &name)
+                         QMessageBox::warning(0,
+                            QWidget::tr("Load MIDI"),
+                            QWidget::tr("Load failed: %1").arg(errorText),
+-                           QString::null, QWidget::tr("Quit"), QString::null, 0, 1);
++                           QString(), QWidget::tr("Quit"), QString(), 0, 1);
+                         }
+                   fp.close();
+                   qDebug("importMidi: bad file format");
+diff --git a/mscore/instrdialog.cpp b/mscore/instrdialog.cpp
+index fa7bacd622..8d81fe9e20 100644
+--- a/mscore/instrdialog.cpp
++++ b/mscore/instrdialog.cpp
+@@ -138,7 +138,7 @@ void InstrumentsDialog::on_loadButton_clicked()
+             QMessageBox::warning(0,
+                QWidget::tr("Load Style Failed"),
+                QString(strerror(errno)),
+-               QString::null, QWidget::tr("Quit"), QString::null, 0, 1);
++               QString(), QWidget::tr("Quit"), QString(), 0, 1);
+             return;
+             }
+       instrumentsWidget->buildTemplateList();
+diff --git a/mscore/musescore.cpp b/mscore/musescore.cpp
+index dd4a4b95ca..07cb596abe 100644
+--- a/mscore/musescore.cpp
++++ b/mscore/musescore.cpp
+@@ -4013,7 +4013,7 @@ bool MuseScore::readLanguages(const QString& path)
+                 QMessageBox::warning(0,
+                    QWidget::tr("Load Languages Failed:"),
+                    error,
+-                   QString::null, QWidget::tr("Quit"), QString::null, 0, 1);
++                   QString(), QWidget::tr("Quit"), QString(), 0, 1);
+                 return false;
+                 }
+ 
+@@ -6753,7 +6753,7 @@ bool MuseScore::saveMp3(Score* score, const QString& name)
+                   QMessageBox::warning(0,
+                                        tr("Encoding Error"),
+                                        tr("Unable to open target file for writing"),
+-                                       QString::null, QString::null);
++                                       QString(), QString());
+                   }
+             return false;
+             }
+@@ -6792,7 +6792,7 @@ bool MuseScore::saveMp3(Score* score, QIODevice* device, bool& wasCanceled)
+                   QMessageBox::warning(0,
+                                tr("Error Opening LAME library"),
+                                tr("Could not open MP3 encoding library!"),
+-                               QString::null, QString::null);
++                               QString(), QString());
+             qDebug("Could not open MP3 encoding library!");
+             return false;
+             }
+@@ -6804,7 +6804,7 @@ bool MuseScore::saveMp3(Score* score, QIODevice* device, bool& wasCanceled)
+                   QMessageBox::warning(0,
+                                tr("Error Opening LAME library"),
+                                tr("Not a valid or supported MP3 encoding library!"),
+-                               QString::null, QString::null);
++                               QString(), QString());
+             qDebug("Not a valid or supported MP3 encoding library!");
+             return false;
+             }
+@@ -6829,7 +6829,7 @@ bool MuseScore::saveMp3(Score* score, QIODevice* device, bool& wasCanceled)
+             if (!MScore::noGui) {
+                   QMessageBox::warning(0, tr("Encoding Error"),
+                      tr("Unable to initialize MP3 stream"),
+-                     QString::null, QString::null);
++                     QString(), QString());
+                   }
+             qDebug("Unable to initialize MP3 stream");
+             MScore::sampleRate = oldSampleRate;
+@@ -6996,7 +6996,7 @@ bool MuseScore::saveMp3(Score* score, QIODevice* device, bool& wasCanceled)
+                                     QMessageBox::warning(0,
+                                        tr("Encoding Error"),
+                                        tr("Error %1 returned from MP3 encoder").arg(bytes),
+-                                       QString::null, QString::null);
++                                       QString(), QString());
+                               break;
+                               }
+                         else
+diff --git a/mscore/musescore.h b/mscore/musescore.h
+index 434072a12f..d8089a345c 100644
+--- a/mscore/musescore.h
++++ b/mscore/musescore.h
+@@ -142,7 +142,7 @@ struct LanguageItem {
+       LanguageItem(const QString k, const QString n) {
+             key = k;
+             name = n;
+-            handbook = QString::null;
++            handbook = QString();
+             }
+       LanguageItem(const QString k, const QString n, const QString h) {
+             key = k;
+diff --git a/mscore/network/loginmanager.cpp b/mscore/network/loginmanager.cpp
+index 7bcfd892e0..4abf7e3e4e 100644
+--- a/mscore/network/loginmanager.cpp
++++ b/mscore/network/loginmanager.cpp
+@@ -680,7 +680,7 @@ void LoginManager::mediaUploadFinished()
+             QMessageBox::warning(0,
+                      tr("Upload Error"),
+                      tr("Sorry, MuseScore couldn't upload the audio file. Error %1").arg(e),
+-                     QString::null, QString::null);
++                     QString(), QString());
+             }
+       }
+