内容

• 特性
• 公共函数
• 公共槽
• 详细描述

SeekSlider Class

( Phonon::SeekSlider )

The SeekSlider class provides a slider for seeking to positions in media streams. 更多...

头：	#include <Phonon/SeekSlider>
Since:	Qt 4.4
继承：	QWidget

• 所有成员列表，包括继承成员

特性

iconSize : QSize iconVisible : bool orientation : Qt::Orientation

pageStep : int singleStep : int tracking : bool

• 58 特性继承自 QWidget
• 1 特性继承自 QObject

公共函数

	SeekSlider (QWidget * parent = 0)
	SeekSlider (MediaObject * media , QWidget * parent = 0)
	~SeekSlider ()
bool	hasTracking () const
QSize	iconSize () const
bool	isIconVisible () const
MediaObject *	mediaObject () const
Qt::Orientation	orientation () const
int	pageStep () const
void	setPageStep (int 毫秒 )
void	setSingleStep (int 毫秒 )
void	setTracking (bool tracking )
int	singleStep () const

• 220 公共函数继承自 QWidget
• 29 公共函数继承自 QObject
• 12 公共函数继承自 QPaintDevice

公共槽

void	setIconSize (const QSize & size )
void	setIconVisible (bool)
void	setMediaObject (MediaObject * media )
void	setOrientation (Qt::Orientation)

• 19 公共槽继承自 QWidget
• 1 公共槽继承自 QObject

额外继承成员

• 1 信号继承自 QWidget
• 1 信号继承自 QObject
• 4 static public members inherited from QWidget
• 7 静态公共成员继承自 QObject
• 37 保护函数继承自 QWidget
• 8 保护函数继承自 QObject
• 1 保护函数继承自 QPaintDevice
• 1 保护槽继承自 QWidget

详细描述

The SeekSlider class provides a slider for seeking to positions in media streams.

The SeekSlider connects to a MediaObject , and controls the seek position in the object's media stream.

The slider will connect to the necessary signals to keep track of the sliders maximum, minimum, and current values. It will also disable itself for non-seekable streams, and update the media object when the current value of the slider changes.

Here follows a typical example of SeekSlider usage:

    Phonon::MediaObject *moo = new Phonon::MediaObject;;
    Phonon::AudioOutput *device = new Phonon::AudioOutput;
    Phonon::createPath(moo, device);
    moo->setCurrentSource(QString("/home/gvatteka/Music/Lumme-Badloop.ogg"));
    Phonon::SeekSlider *slider = new Phonon::SeekSlider;
    slider->setMediaObject(moo);
    slider->show();
    moo->play();
					

另请参阅 Phonon::VolumeSlider , Phonon::VideoWidget , 音乐播放器范例 ，和 Phonon 模块 .

特性文档编制

iconSize : QSize

This property holds the icon size used for the mute button/icon.

The default size is defined by the GUI style.

访问函数：

QSize	iconSize () const
void	setIconSize (const QSize & size )

iconVisible : bool

This property holds whether the icon next to the slider is visible.

By default the icon is visible if the platform provides an icon; else it's hidden.

访问函数：

bool	isIconVisible () const
void	setIconVisible (bool)

orientation : Qt::Orientation

This property holds the orientation of the slider.

取向必须是 Qt::Vertical or Qt::Horizontal (the default).

访问函数：

Qt::Orientation	orientation () const
void	setOrientation (Qt::Orientation)

pageStep : int

This property holds the page step interval.

The larger of two natural steps that a slider provides and typically corresponds to the user pressing PageUp or PageDown.

Defaults to 5 seconds.

访问函数：

int	pageStep () const
void	setPageStep (int 毫秒 )

singleStep : int

This property holds the single step interval.

The smaller of two natural steps that a slider provides and typically corresponds to the user pressing an arrow key.

Defaults to 0.5 seconds.

访问函数：

int	singleStep () const
void	setSingleStep (int 毫秒 )

tracking : bool

This property holds whether slider tracking is enabled.

If tracking is enabled (the default), the media seeks while the slider is being dragged. If tracking is disabled, the media seeks only when the user releases the slider.

访问函数：

bool	hasTracking () const
void	setTracking (bool tracking )

成员函数文档编制

SeekSlider:: SeekSlider ( QWidget * parent = 0)

Constructs a seek slider widget with the given parent .

SeekSlider:: SeekSlider ( MediaObject * media , QWidget * parent = 0)

Constructs a seek slider widget for the specified media 采用给定 parent .

SeekSlider:: ~SeekSlider ()

Destroys the seek slider.

MediaObject * SeekSlider:: mediaObject () const

Return the media object this SeekSlider controls.

另请参阅 setMediaObject ().

[slot] void SeekSlider:: setMediaObject ( MediaObject * media )

Sets the media object to be controlled by this slider to the media 指定。

另请参阅 mediaObject ().