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#ifndef ViewBase_h
#define ViewBase_h
// QT
#include "tqwidget.h"
// KDE
class KActionCollection;
class KPopupMenu;
class MixSet;
class Mixer;
class MixDevice;
/**
* The ViewBase is a virtual base class, to be used for subclassing the real Mixer Views.
*/
class ViewBase : public TQWidget
{
Q_OBJECT
TQ_OBJECT
public:
typedef uint ViewFlags;
enum ViewFlagsEnum {
// Regular flags
HasMenuBar = 0x0001,
MenuBarVisible = 0x0002,
Horizontal = 0x0004,
Vertical = 0x0008,
// Experimental flags
Experimental_SurroundView = 0x1000,
Experimental_GridView = 0x2000
};
ViewBase(TQWidget* tqparent, const char* name, const TQString & caption, Mixer* mixer, WFlags=0, ViewFlags vflags=0);
virtual ~ViewBase();
// Subclasses must define this method. It is called by the ViewBase() constuctor.
// The view class must initialize here the _mixSet. This will normally be a subset
// of the passed mixset.
// After that the subclass must be prepared for
// being fed MixDevice's via the add() method.
virtual void setMixSet(MixSet *mixset);
// Returns the number of accepted MixDevice's from setMixerSet(). This is
// normally smaller that mixset->count(), except when the class creates virtual
// devices
virtual int count() = 0;
// returns an advice about whether this view should be used at all. The returned
// value is a percentage (0-100). A view without accepted devices would return 0,
// a "3D sound View" would return 75, if all vital but some optional devices are
// not available.
virtual int advice() = 0;
// This method is called by ViewBase at the end of createDeviceWidgets(). The default
// implementation does nothing. Subclasses can override this method for doing final
// touches. This is very much like polish(), but called at an exactly well-known time.
// Also I do not want Views to interfere with polish()
virtual void constructionFinished() = 0;
// This method is called after a configuration update (in other words: after the user
// has clicked "OK" on the "show/hide" configuration dialog. The default implementation
// does nothing.
virtual void configurationUpdate();
/**
* Creates the widgets for all supported devices. The default implementation loops
* over the supported MixDevice's and calls add() for each of it.
*/
virtual void createDeviceWidgets();
/**
* Creates a suitable representation for the given MixDevice.
* The default implementation creates a label
*/
virtual TQWidget* add(MixDevice *);
/**
* Popup stuff
*/
virtual KPopupMenu* getPopup();
virtual void popupReset();
virtual void showContextMenu();
Mixer* getMixer();
/**
* Contains the widgets for the _mixSet. There is a 1:1 relationship, which means:
* _mdws[i] is the Widget for the MixDevice _mixSet[i].
* Hint: The new ViewSurround class shows that a 1:1 relationship does not work in a general scenario.
* I actually DID expect this. The solution is unclear yet, probably there will be a virtual mapper method.
*/
TQPtrList<TQWidget> _mdws; // this obsoletes the former Channel class
TQString caption() const { return _caption; }
protected:
void init();
Mixer *_mixer;
MixSet *_mixSet;
KPopupMenu *_popMenu;
KActionCollection* _actions;
ViewFlags _vflags;
public slots:
virtual void refreshVolumeLevels();
virtual void configureView();
void toggleMenuBarSlot();
protected slots:
void mousePressEvent( TQMouseEvent *e );
signals:
void toggleMenuBar();
private:
TQString _caption;
};
#endif
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