File	Doc	Category	Size	Date	Package
MMHelperImpl.java	API Doc	phoneME MR2 API (J2ME)	3934	Wed May 02 18:00:16 BST 2007	javax.microedition.lcdui

MMHelperImpl

• java.lang.Object
  • com.sun.mmedia.MMHelper

Fields Summary
private static MMHelperImpl	instance

Constructors Summary
public MMHelperImpl() Single use constructor. Cannot be instantiated twice. The instance object is held by Canvas as well as MIDPVideoPainter implementation. if (instance != null) { throw new RuntimeException("Cannot instantiate MMHelperImpl twice"); } MMHelper.setMMHelper(this); instance = this;

Methods Summary
static javax.microedition.lcdui.MMHelperImpl	getInstance() Returns the only instance of this class. return the instance of this class return instance;
public Display	getItemDisplay(Item item) Get Display being used for Item painting. Platform-dependent. Display display = null; if (item.owner == null) return null; return item.owner.getLF().lGetCurrentDisplay();
synchronized void	hideVideo(java.lang.Object video) Notify video renderers that canvas becomes invisible. param video The video painter which is hidden. MIDPVideoPainter vp = (MIDPVideoPainter)video; vp.hideVideo();
synchronized void	paintVideo(java.lang.Object video, Graphics g) Informs the player to draw into Graphics g param video The video player which should be repainted. param g The graphics object to pass to the video player. MIDPVideoPainter vp = (MIDPVideoPainter)video; vp.paintVideo(g);
public void	registerPlayer(Canvas c, com.sun.mmedia.MIDPVideoPainter vp) Registers a video control (which implements MIDPVideoPainter) with the corresponding Canvas where the video is to show up. ((CanvasLFImpl)c.canvasLF).addEmbeddedVideo(vp);
synchronized void	showVideo(java.lang.Object video) Notify video renderers that canvas becomes visible. param video The video painter which is shown. MIDPVideoPainter vp = (MIDPVideoPainter)video; vp.showVideo();
public synchronized void	unregisterPlayer(Canvas c, com.sun.mmedia.MIDPVideoPainter vp) Unregisters a video control so that it doesn't get paint callbacks anymore after the player is closed. This also reduces load on the Canvas repaint mechanism. ((CanvasLFImpl)c.canvasLF).removeEmbeddedVideo(vp);