Hey Christophe,
i've just had a look at your repo and you put PMC States libraries in a
different directory called states. The error you encounter is just because
you don't link against that new library. You can just add mediacenterstates
to the TARGET_LINK_LIBRARIES macro of the CMakeLists.txt of the
MediaContainment but I'd prefer you put the States stuff still under
libs/mediacenter because it is part of the MediaCenter API. So, please, move
the States API under libs/mediacenter and your code should compile fine.
2010/4/3 Christophe Olinger <oling...@binarylooks.com>
> Hey guys,
>
> I think I am doing a stupid C++ mistake here: I get the follwing error:
>
> mediacontainment.cpp:76: undefined reference to
> 'MediaCenter::MediaCenter::State::MediaCenterState(QState*)
>
> The last line of this mail causes the error.
>
>
> Here is mediacenterstate.h
>
> #ifndef MEDIACENTERSTATE_H
> #define MEDIACENTERSTATE_H
>
> #include "libs/mediacenter/mediacenter.h"
> #include "libs/mediacenter/mediacenter_export.h"
>
> #include <QtCore/qabstractstate.h>
> #include <QGraphicsWidget>
>
> #include <Plasma/IconWidget>
>
> namespace MediaCenter {
>
> enum State {
> PictureMode,
> MusicMode,
> VideoMode,
> Home
> };
>
> enum MainSubComponent {
> JumpToVideoState,
> JumpToMusicState,
> JumpToPictureState,
> JumpToHome,
> ToggleControlBarAutohide,
> ToggleInfoBarAutohide
> };
>
> class MEDIACENTER_EXPORT MediaCenterState : public QAbstractState
> {
> Q_OBJECT
> public:
> MediaCenterState(QState *parent = 0);
> virtual ~MediaCenterState();
>
> QGraphicsWidget *subComponent(MainSubComponent c);
>
> protected:
> void onExit(QEvent* event);
> void onEntry(QEvent* event);
>
> Plasma::IconWidget *m_jumpToHome;
> };
>
> } //namespace MediaCenter
> #endif // MEDIACENTERSTATE_H
>
> here is mediacenterstate.cpp
>
> #include "mediacenterstate.h"
>
> using namespace MediaCenter;
>
> MediaCenterState::MediaCenterState (QState *parent) :
> QAbstractState(parent),
> m_jumpToHome(new Plasma::IconWidget())
> {
> }
>
> MediaCenterState::~MediaCenterState()
> {
> }
>
> void MediaCenterState::onExit(QEvent *event)
> {
> Q_UNUSED(event);
> }
>
> void MediaCenterState::onEntry(QEvent *event)
> {
> Q_UNUSED(event);
> }
>
> QGraphicsWidget
> *MediaCenterState::subComponent(MediaCenter::MainSubComponent c)
> {
> if (c == MediaCenter::JumpToHome) {
> m_jumpToHome->setIcon("User-Folder");
> return m_jumpToHome;
> }
> }
>
>
> here is mediacontainment.h
>
> #ifndef MEDIACONTAINMENT_H
> #define MEDIACONTAINMENT_H
>
> #include "mediacenter/mediacenter.h"
> #include "states/mediacenterstate.h"
>
> #include <Plasma/Containment>
> #include <QList>
>
> class QAction;
> class QPointF;
> namespace MediaCenter {
> class Browser;
> class PlaybackControl;
> class Playlist;
> class Player;
> class PictureState;
> class VideoState;
> }
>
> class MediaLayout;
>
> class MediaContainment : public Plasma::Containment
> {
> Q_OBJECT
> public:
> MediaContainment(QObject *parent, const QVariantList &args);
> ~MediaContainment();
>
> QList<QAction*> contextualActions();
>
> MediaCenter::State currentState();
> void setCurrentState(MediaCenter::State);
>
> QList<QGraphicsWidget*> currentMainComponents();
> void addCurrentMainComponent(QGraphicsWidget*);
>
> QList<QGraphicsWidget*> currentSubComponents();
> void addCurrentSubComponent(QGraphicsWidget*);
>
> protected:
> void constraintsEvent(Plasma::Constraints constraints);
>
> private slots:
> void slotAppletAdded(Plasma::Applet *applet, const QPointF &pos);
> void slotAppletRemoved(Plasma::Applet *applet);
> void switchState(MediaCenter::State);
>
> void switchToPictureState();
> void switchToVideoState();
> void switchToMusicState();
>
> private:
> MediaCenter::Browser *m_browser;
> MediaCenter::PlaybackControl *m_control;
> MediaCenter::Playlist *m_playlist;
> MediaCenter::Player *m_player;
>
> MediaCenter::State m_currentState;
> MediaCenter::State m_previousState;
>
> MediaCenter::MediaCenterState *m_mediaCenterState;
> MediaCenter::VideoState *m_videoState;
> MediaCenter::PictureState *m_pictureState;
>
> QList<QGraphicsWidget*> m_currentMainComponents;
> QList<QGraphicsWidget*> m_currentSubComponents;
>
> bool m_musicIsPlaying;
>
> MediaLayout *m_layout;
>
> void addMediaApplet(Plasma::Applet *);
>
> void initControls();
> void connectControls(MediaCenter::State);
>
> //we need these to give full control to the containment and avoid
> cycling signals with the controller
> //the controller's buttons are connected to these
> void controlBarToPictureState();
> void controlBarToVideoState();
> void controlBarToMusicState();
>
> void startStateMachine();
> };
>
>
> and here the relevant part of mediacontainment.cpp
>
> #include "mediacontainment.h"
> #include "medianotificationwidget.h"
> #include "medialayout.h"
> #include "mediatoolbox.h"
>
> #include <mediacenter/browser.h>
> #include <mediacenter/playbackcontrol.h>
> #include <mediacenter/playlist.h>
> #include <mediacenter/player.h>
>
> #include <states/videostate.h>
> #include <states/picturestate.h>
>
> // Qt
> #include <QAction>
> #include <QStateMachine>
>
> // KDE
> #include <KDebug>
> #include <KNotification>
> #include <KLocale>
>
> static const int BROWSER_WIDTH = 300;
> static const int BROWSER_HEIGHT = 100;
>
>
> K_EXPORT_PLASMA_APPLET(mediacontainment, MediaContainment)
>
> MediaContainment::MediaContainment(QObject *parent, const QVariantList
> &args) : Plasma::Containment(parent, args),
> m_browser(0),
> m_control(0),
> m_playlist(0),
> m_player(0),
> m_pictureState(0),
> m_currentState(MediaCenter::PictureMode),
> m_previousState(MediaCenter::PictureMode),
> m_musicIsPlaying(false),
> m_layout(new MediaLayout(this))
> {
> setContainmentType(Plasma::Containment::CustomContainment);
> setHasConfigurationInterface(true);
> setAcceptHoverEvents(true);
> setToolBox(new MediaToolBox(this));
>
> connect (toolBox(), SIGNAL(toggled()), m_layout,
> SLOT(toggleShowAllMediaApplets()));
> }
>
> MediaContainment::~MediaContainment()
> {}
>
> void MediaContainment::startStateMachine()
> {
> //Prepare StateMachine
> QStateMachine machine; //this is not a pointer
>
> //Set up all possible states
> m_mediaCenterState = new MediaCenter::MediaCenterState(); //these are
> pointers
>
>>
>>
>
> _______________________________________________
> Plasma-devel mailing list
> Plasma-devel@kde.org
> https://mail.kde.org/mailman/listinfo/plasma-devel
>
>
--
Alessandro Diaferia
KDE Developer
KDE e.V. member
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