[vlmc-devel] [PATCH] Refactored some qt4 connects to qt5 connects, added some FIXME's about invalid connections (not portable to qt5)

Paweł Wegner pawel.wegner95 at gmail.com
Mon Mar 14 21:29:15 CET 2016


Hi,

It has to be ::Clip because Clip would correspond to Commands::Clip in that
scope and that would result in a compilation error.
The temporary variable was needed because in the following connect if i had
written simply &Transcoder::progress, then compiler would find it ambiguous
because Transcoder::progress
can have either int or float as a parameter.
Should i submit a patch which changes void (NotificationZone::*f)(float) to
auto?

2016-03-14 21:13 GMT+01:00 Hugo Beauzée-Luyssen <hugo at beauzee.fr>:

> Hi,
>
> On 03/12/2016 01:30 PM, Paweł Wegner wrote:
> > ---
> >  src/Commands/Commands.cpp               | 11 +++++++----
> >  src/Commands/KeyboardShortcutHelper.cpp |  4 ++--
> >  src/Library/Library.cpp                 |  3 +++
> >  src/Main/Core.cpp                       |  6 +++---
> >  src/Main/main.cpp                       |  1 +
> >  src/Media/Clip.cpp                      |  4 ++--
> >  src/Media/Transcoder.cpp                | 13 +++++++------
> >  7 files changed, 25 insertions(+), 17 deletions(-)
> >
> > diff --git a/src/Commands/Commands.cpp b/src/Commands/Commands.cpp
> > index 9351107..bfa291f 100644
> > --- a/src/Commands/Commands.cpp
> > +++ b/src/Commands/Commands.cpp
> > @@ -43,6 +43,9 @@ Commands::Generic::Generic() :
> >  {
> >      //This is connected using a direct connection to ensure the view
> can be refreshed
> >      //just after the signal has been emited.
> > +
> > +    //FIXME: there is no signal retranslateRequired in QUndoStack class
> > +    //       <3 qt4 connects
> >      connect( Core::getInstance()->undoStack(), SIGNAL(
> retranslateRequired() ),
> >               this, SLOT( retranslate() ), Qt::DirectConnection );
> >  }
> > @@ -80,7 +83,7 @@ Commands::Clip::Add::Add( ClipHelper* ch,
> TrackWorkflow* tw, qint64 pos ) :
> >          m_trackWorkflow( tw ),
> >          m_pos( pos )
> >  {
> > -    connect( ch->clip(), SIGNAL( destroyed() ), this, SLOT(
> invalidate() ) );
> > +    connect( ch->clip(), &::Clip::destroyed, this, &Add::invalidate );
>
> Why do you prepend by a scope resolution operator? Why not simply
> Clip::destroyed?
> Same question goes for below
>
> >      retranslate();
> >  }
> >
> > @@ -158,7 +161,7 @@ Commands::Clip::Move::internalUndo()
> >  Commands::Clip::Remove::Remove( ClipHelper* ch, TrackWorkflow* tw ) :
> >          m_clipHelper( ch ), m_trackWorkflow( tw )
> >  {
> > -    connect( ch->clip(), SIGNAL( destroyed() ), this, SLOT(
> invalidate() ) );
> > +    connect( ch->clip(), &::Clip::destroyed, this, &Remove::invalidate
> );
> >      retranslate();
> >      m_pos = tw->getClipPosition( ch->uuid() );
> >  }
> > @@ -189,7 +192,7 @@ Commands::Clip::Resize::Resize( TrackWorkflow* tw,
> ClipHelper* ch, qint64 newBeg
> >      m_newEnd( newEnd ),
> >      m_newPos( newPos )
> >  {
> > -    connect( ch->clip(), SIGNAL( destroyed() ), this, SLOT(
> invalidate() ) );
> > +    connect( ch->clip(), &::Clip::destroyed, this, &Resize::invalidate
> );
> >      m_oldBegin = ch->begin();
> >      m_oldEnd = ch->end();
> >      m_oldPos = tw->getClipPosition( ch->uuid() );
> > @@ -230,7 +233,7 @@ Commands::Clip::Split::Split( TrackWorkflow *tw,
> ClipHelper *toSplit,
> >      m_newClipPos( newClipPos ),
> >      m_newClipBegin( newClipBegin )
> >  {
> > -    connect( toSplit->clip(), SIGNAL( destroyed() ), this, SLOT(
> invalidate() ) );
> > +    connect( toSplit->clip(), &::Clip::destroyed, this,
> &Split::invalidate );
> >      m_newClip = new ClipHelper( toSplit->clip(), newClipBegin,
> toSplit->end() );
> >      m_oldEnd = toSplit->end();
> >      retranslate();
> > diff --git a/src/Commands/KeyboardShortcutHelper.cpp
> b/src/Commands/KeyboardShortcutHelper.cpp
> > index 58a834c..eb76bb4 100644
> > --- a/src/Commands/KeyboardShortcutHelper.cpp
> > +++ b/src/Commands/KeyboardShortcutHelper.cpp
> > @@ -33,7 +33,7 @@ KeyboardShortcutHelper::KeyboardShortcutHelper( const
> QString& name, QWidget* pa
> >  {
> >      SettingValue* setting = Core::getInstance()->settings()->value(
> name );
> >      setKey( QKeySequence( setting->get().toString() ) );
> > -    connect( setting, SIGNAL( changed( QVariant ) ), this, SLOT(
> shortcutUpdated( const QVariant& ) ) );
> > +    connect( setting, &SettingValue::changed, this,
> &KeyboardShortcutHelper::shortcutUpdated );
> >  }
> >
> >  KeyboardShortcutHelper::KeyboardShortcutHelper( const QString& name,
> QAction *action,
> > @@ -44,7 +44,7 @@ KeyboardShortcutHelper::KeyboardShortcutHelper( const
> QString& name, QAction *ac
> >  {
> >      SettingValue* setting = Core::getInstance()->settings()->value(
> name );
> >      action->setShortcut( setting->get().toString() );
> > -    connect( setting, SIGNAL( changed( QVariant ) ), this, SLOT(
> shortcutUpdated( const QVariant& ) ) );
> > +    connect( setting, &SettingValue::changed, this,
> &KeyboardShortcutHelper::shortcutUpdated );
> >  }
> >
> >  void
> > diff --git a/src/Library/Library.cpp b/src/Library/Library.cpp
> > index 5e102a3..9685280 100644
> > --- a/src/Library/Library.cpp
> > +++ b/src/Library/Library.cpp
> > @@ -114,6 +114,9 @@ Library::mediaLoaded( const Media* media )
> >  {
> >      if ( media != NULL )
> >      {
> > +        //FIXME: metaDataComputed in Media class has no arguments, this
> shouldn't be working;
> > +        //replacing this with disconnect( media,
> &Media::metaDataComputed, this, &Library::mediaLoaded );
> > +        //produces static_assert error
> >          disconnect( media, SIGNAL( metaDataComputed( const Media* ) ),
> >                   this, SLOT( mediaLoaded( const Media* ) ) );
> >      }
> > diff --git a/src/Main/Core.cpp b/src/Main/Core.cpp
> > index a9fcf0b..7145478 100644
> > --- a/src/Main/Core.cpp
> > +++ b/src/Main/Core.cpp
> > @@ -55,9 +55,9 @@ Core::Core()
> >      m_library = new Library( m_workspace );
> >      m_currentProject = new Project( m_settings );
> >
> > -    connect( m_undoStack, SIGNAL( cleanChanged( bool ) ),
> m_currentProject, SLOT( cleanChanged( bool ) ) );
> > -    connect( m_currentProject, SIGNAL( projectSaved() ), m_undoStack,
> SLOT( setClean() ) );
> > -    connect( m_library, SIGNAL( cleanStateChanged( bool ) ),
> m_currentProject, SLOT( libraryCleanChanged( bool ) ) );
> > +    connect( m_undoStack, &QUndoStack::cleanChanged, m_currentProject,
> &Project::cleanChanged );
> > +    connect( m_currentProject, &Project::projectSaved, m_undoStack,
> &QUndoStack::setClean );
> > +    connect( m_library, &Library::cleanStateChanged, m_currentProject,
> &Project::libraryCleanChanged );
> >      connect( m_currentProject, SIGNAL( projectLoaded( QString, QString
> ) ),
> >               m_recentProjects, SLOT( projectLoaded( QString, QString )
> ) );
> >  }
> > diff --git a/src/Main/main.cpp b/src/Main/main.cpp
> > index f2e9b49..6003d7b 100644
> > --- a/src/Main/main.cpp
> > +++ b/src/Main/main.cpp
> > @@ -193,6 +193,7 @@ VLMCCoremain( int argc, char **argv )
> >      ConsoleRenderer renderer;
> >      ProjectManager  *pm = Core::getInstance()->currentProject();
> >
> > +    //FIXME: only signal projectLoaded( const QString& ) in
> ProjectManager
> >      QCoreApplication::connect( pm, SIGNAL( projectLoaded() ),
> &renderer, SLOT( startRender() ) );
> >      pm->loadProject( app.arguments()[1] );
> >  #endif
> > diff --git a/src/Media/Clip.cpp b/src/Media/Clip.cpp
> > index 2c4a491..94535b3 100644
> > --- a/src/Media/Clip.cpp
> > +++ b/src/Media/Clip.cpp
> > @@ -47,8 +47,8 @@ Clip::Clip( Media *media, qint64 begin /*= 0*/, qint64
> end /*= -1*/, const QStri
> >      m_childs = new MediaContainer( this );
> >      m_rootClip = media->baseClip();
> >      computeLength();
> > -    connect( media, SIGNAL( metaDataComputed() ),
> > -             this, SLOT( mediaMetadataUpdated() ) );
> > +    connect( media, &Media::metaDataComputed,
> > +             this, &Clip::mediaMetadataUpdated );
> >  }
> >
> >  Clip::Clip( Clip *parent, qint64 begin /*= -1*/, qint64 end /*= -1*/,
> > diff --git a/src/Media/Transcoder.cpp b/src/Media/Transcoder.cpp
> > index 1357329..7640d31 100644
> > --- a/src/Media/Transcoder.cpp
> > +++ b/src/Media/Transcoder.cpp
> > @@ -36,10 +36,11 @@ Transcoder::Transcoder( Media* media )
> >      : m_media( media )
> >      , m_renderer( NULL )
> >  {
> > -    connect( this, SIGNAL( notify( QString ) ),
> > -             NotificationZone::getInstance(), SLOT( notify( QString ) )
> );
> > -    connect( this, SIGNAL( progress( float ) ),
> > -             NotificationZone::getInstance(), SLOT( progressUpdated(
> float ) ) );
> > +    connect( this, &Transcoder::notify,
> > +             NotificationZone::getInstance(), &NotificationZone::notify
> );
> > +    void (NotificationZone::*f)(float) =
> &NotificationZone::progressUpdated;
>
> Why the temporary variable? Also, feel free to use "auto" ;)
>
> > +    connect( this, &Transcoder::progress,
> > +             NotificationZone::getInstance(), f );
> >      m_eventWatcher = new RendererEventWatcher;
> >  }
> >
> > @@ -62,8 +63,8 @@ Transcoder::transcodeToPs()
> >      m_destinationFile = outputDir + '/' +
> m_media->fileInfo()->baseName() + ".ps";
> >      m_renderer->setOutputFile( qPrintable( m_destinationFile ) );
> >      m_renderer->setName( qPrintable( QString( "Transcoder " ) +
> m_media->fileInfo()->baseName() ) );
> > -    connect( m_eventWatcher, SIGNAL( positionChanged( float ) ), this,
> SIGNAL( progress( float ) ) );
> > -    connect( m_eventWatcher, SIGNAL( endReached() ), this, SLOT(
> transcodeFinished() ) );
> > +    connect( m_eventWatcher, &RendererEventWatcher::positionChanged,
> this, &Transcoder::progress );
> > +    connect( m_eventWatcher, &RendererEventWatcher::endReached, this,
> &Transcoder::transcodeFinished );
> >      emit notify( "Transcoding " +
> m_media->fileInfo()->absoluteFilePath() + " to " + m_destinationFile );
> >      m_renderer->start();
> >  }
> >
>
> Except for those remarks, looks good to me!
>
> Regards,
>
> --
> Hugo Beauzée-Luyssen
> www.beauzee.fr
> _______________________________________________
> Vlmc-devel mailing list
> Vlmc-devel at videolan.org
> https://mailman.videolan.org/listinfo/vlmc-devel
>
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