toolkit.java

kaffe是一个java虚拟机的源代码。里面包含了一些java例程和标准的java包。

public ColorModel getColorModel () {
	if ( colorModel == null ){
		colorModel = clrGetColorModel();
	}

	return colorModel;
}

public static Toolkit getDefaultToolkit () {
	return singleton;
}

public String[] getFontList () {
	String[] list = { "Default", "Monospaced",
	                  "SansSerif", "Serif",
			              "Dialog", "DialogInput", "ZapfDingbats" };
	return list;
}

public FontMetrics getFontMetrics ( Font font ) {
	return FontMetrics.getFontMetrics( font);
}

public Image getImage ( String filename ) {
	File f = new File( filename);
	
	// Hmm, that's a inconsistency with getImage(URL). The doc isn't very
	// helpful, here (class doc says nothing, book tells us it should return
	// null in case it's not there - but that is not known a priori for URLs).
	// JDK never returns a null object, so we don't do, either
	return (f.exists()) ? new Image( f) : Image.getUnknownImage();
}

public Image getImage ( URL url ) {
	// how can we return 'null' before we start to produce this thing (which
	// isn't supposed to happen here)? We are NOT going to open the URLConnection
	// twice just to check if it is there
	return new Image( url);
}

public int getMenuShortcutKeyMask() {
	return InputEvent.CTRL_MASK;
}

public PrintJob getPrintJob ( Frame frame, String jobtitle, Properties props ) {
	return new PSPrintJob( frame, jobtitle, props);
}

public static String getProperty ( String key, String defaultValue ) {
	return null;
}

public int getScreenResolution() {
	return resolution;
}

public Dimension getScreenSize () {
	return screenSize;
}

public Clipboard getSystemClipboard () {
	if ( clipboard == null )
		clipboard = new NativeClipboard();
		
	return clipboard;
}

public EventQueue getSystemEventQueue () {
	return eventQueue;
}

native static synchronized void graAddClip ( Ptr grData, int xClip, int yClip, int wClip, int hClip );

native static synchronized void graClearRect ( Ptr grData, int x, int y, int width, int height );

native static synchronized void graCopyArea ( Ptr grData, int x, int y, int width, int height,
					   int xDelta, int yDelta );

native static synchronized void graDraw3DRect ( Ptr grData, int x, int y, int width, int height,
		     boolean raised, int rgbValue );

native static synchronized void graDrawArc ( Ptr grData, int x, int y, int width, int height, int startAngle, int arcAngle );

native static synchronized void graDrawBytes ( Ptr grData, byte[] data, int offset, int length, int x, int y );

native static synchronized void graDrawChars ( Ptr grData, char[] data, int offset, int length, int x, int y );

native static synchronized void graDrawImage( Ptr grData, Ptr imgData, int src_x, int src_y, int dst_x, int dst_y, int w, int h, int bgval );

native static synchronized void graDrawImageScaled ( Ptr grData, Ptr imgData,
			  int dx0, int dy0, int dx1, int dy1,
			  int sx0, int sy0, int sx1, int sy1, int bgval );

native static synchronized void graDrawLine ( Ptr grData, int x1, int y1, int x2, int y2 );

native static synchronized void graDrawOval ( Ptr grData, int x, int y, int width, int height );

native static synchronized void graDrawPolygon ( Ptr grData, int[] xPoints, int[] yPoints, int nPoints );

native static synchronized void graDrawPolyline ( Ptr grData, int[] xPoints, int[] yPoints, int nPoints );

native static synchronized void graDrawRect ( Ptr grData, int x, int y, int width, int height );

native static synchronized void graDrawRoundRect ( Ptr grData, int x, int y, int width, int height,
						int arcWidth, int arcHeight );

native static synchronized void graDrawString ( Ptr grData, String s, int x, int y );

native static synchronized void graFill3DRect ( Ptr grData, int x, int y, int width, int height,
		     boolean raised, int rgbValue );

native static synchronized void graFillArc ( Ptr grData, int x, int y, int width, int height, int startAngle, int arcAngle );

native static synchronized void graFillOval ( Ptr grData, int x, int y, int width, int height );

native static synchronized void graFillPolygon ( Ptr grData, int[] xPoints, int[] yPoints, int nPoints );

native static synchronized void graFillRect ( Ptr grData, int x, int y, int width, int height );

native static synchronized void graFillRoundRect ( Ptr grData, int x, int y, int width, int height,
						int arcWidth, int arcHeight );

native static synchronized void graFreeGraphics ( Ptr grData );

native static synchronized Ptr graInitGraphics ( Ptr grData, Ptr tgtData, int tgtType,
					      int xOffset, int yOffset,
					      int xClip, int yClip, int wClip, int hClip,
					      Ptr fontData, int fgClr, int bgClr, boolean blank );

native static synchronized void graSetBackColor ( Ptr grData, int pixelValue );

native static synchronized void graSetClip ( Ptr grData, int xClip, int yClip, int wClip, int hClip );

native static synchronized void graSetColor ( Ptr grData, int pixelValue );

native static synchronized void graSetFont ( Ptr grData, Ptr fontData );

native static synchronized void graSetOffset ( Ptr grData, int xOffset, int yOffset );

native static synchronized void graSetPaintMode ( Ptr grData );

native static synchronized void graSetVisible ( Ptr grData, boolean isVisible );

native static synchronized void graSetXORMode ( Ptr grData, int xClr );

native static synchronized void imgComplete ( Ptr imgData, int status );

native static synchronized Ptr imgCreateFromData( byte[] buf, int offset, int len);

native static synchronized Ptr imgCreateFromFile( String gifPath);

native static synchronized Ptr imgCreateImage( int w, int h);

native static synchronized Ptr imgCreateScaledImage( Ptr imgData, int w, int h);

native static synchronized Ptr imgCreateScreenImage( int w, int h);

native static synchronized void imgFreeImage ( Ptr imgData );

native static synchronized int imgGetHeight( Ptr imgData);

native static synchronized int imgGetLatency ( Ptr imgData );

native static synchronized Ptr imgGetNextFrame ( Ptr imgData );

native static synchronized int imgGetWidth( Ptr imgData);

native static synchronized boolean imgIsMultiFrame( Ptr imgData);

native static synchronized void imgProduceImage( ImageNativeProducer prod, Ptr imgData);

native static synchronized Ptr imgSetFrame( Ptr imgData, int frame);

native static synchronized void imgSetIdxPels( Ptr imgData, int x, int y, int w, int h, int[] rgbs, byte[] pels, int trans, int off, int scans);

native static synchronized void imgSetRGBPels( Ptr imgData, int x, int y, int w, int h, int[] rgbs, int off, int scans);

static synchronized void initToolkit () {
	// this is called when the native layer has been initialized, and it is safe
	// to query native settings / rely on native functionality

	screenSize = new Dimension( tlkGetScreenWidth(), tlkGetScreenHeight());
	resolution = tlkGetResolution();

	// we do this here to keep the getDefaultToolkit() method as simple
	// as possible (since it might be called frequently). This is a
	// deviation from the normal Singleton (which initializes the singleton
	// instance upon request)
	singleton = new Toolkit();
	
	eventQueue = new EventQueue();

/**
	if ( Defaults.ConsoleClass != null ){
		// since we have to defer the ConsoleWindow until the native Toolkit is propperly
		// initialized, it seems to be a good idea to defuse any output to the standard streams
		// (which might cause SEGFAULTS on some systems (e.g. DOS)
		System.setOut( new PrintStream( NullOutputStream.singleton));
		System.setErr( System.out);
	}
**/

	if ( (flags & NATIVE_DISPATCHER_LOOP)	!= 0 ) {
		// let the world know we are ready to take over, native-wise
		Toolkit.class.notify();
	}
}

protected void loadSystemColors ( int[] sysColors ) {
	clrSetSystemColors( sysColors);
}

public boolean prepareImage ( Image image, int width, int height, ImageObserver observer ) {
	return (Image.loadImage( image, width, height, observer));
}

static void redirectStreams () {
	try {
		LogClient lv = (LogClient) Class.forName( Defaults.ConsoleClass).newInstance();
		LogStream ls = new LogStream( 30, lv);
		lv.enable();
	
		System.setOut( new PrintStream( ls) );
		System.setErr( System.out);
		
		System.out.println( "Java console enabled");
	}
	catch ( Exception x ) {
		System.err.println( "unable to redirect out, err");
		x.printStackTrace();
	}
}

static synchronized void startDispatch () {
	if ( eventThread == null ) {
		eventThread = new EventDispatchThread( eventQueue);
		eventThread.start();
		
		// we defer the Console creation / output redirection up to this point, since we otherwise
		// might get all sort of trouble because of a incompletely initialized native layer / Toolkit
		if ( Defaults.ConsoleClass != null )
			redirectStreams();
	}

	if ( ((flags & NEEDS_FLUSH) != 0) && (flushThread == null) ){
		flushThread = new FlushThread( Defaults.GraFlushRate);
		flushThread.start();
	}
}

static synchronized void stopDispatch () {
	if ( eventThread != null ) {
		eventThread.stopDispatching();
		eventThread = null;
	}
	
	if ( flushThread != null ){
		flushThread.stopFlushing();
		flushThread = null;
	}
}

public void sync () {
	tlkSync();
}

static void terminate () {
	if ( clipboard != null )
		clipboard.dispose();

	stopDispatch();
	tlkTerminate();
}

native static synchronized void tlkBeep ();

native static synchronized void tlkDisplayBanner ( String banner );

native static synchronized void tlkFlush ();

native static synchronized int tlkGetResolution ();

native static synchronized int tlkGetScreenHeight ();

native static synchronized int tlkGetScreenWidth ();

native static boolean tlkInit ( String displayName );

native static synchronized int tlkProperties();

native static synchronized void tlkSync ();

native static synchronized void tlkTerminate ();

native static synchronized String tlkVersion ();

native static synchronized Ptr wndCreateDialog ( Ptr ownerData, String title, int x, int y, int width, int height,
		      int cursorType, int bgColor, boolean isResizable );

native static synchronized Ptr wndCreateFrame ( String title, int x, int y, int width, int height,
		     int cursorType, int bgColor, boolean isResizable );

native static synchronized Ptr wndCreateWindow ( Ptr ownerData, int x, int y, int width, int height,
		      int cursorType, int bgColor );

native static synchronized void wndDestroyWindow ( Ptr wndData );

native static synchronized void wndRepaint ( Ptr wndData, int x, int y, int width, int height );

native static synchronized void wndRequestFocus ( Ptr wndData );

native static synchronized void wndSetBounds ( Ptr wndData, int x, int y, int width, int height, boolean isResizable );

native static synchronized void wndSetCursor ( Ptr wndData, int cursorType );

native static synchronized int wndSetDialogInsets ( int top, int left, int bottom, int right);

native static synchronized int wndSetFrameInsets ( int top, int left, int bottom, int right);

native static synchronized void wndSetIcon ( Ptr wndData, Ptr iconData );

native static synchronized void wndSetResizable ( Ptr wndData, boolean isResizable,
		       int x, int y, int width, int height );

native static synchronized void wndSetTitle ( Ptr wndData, String title );

native static synchronized void wndSetVisible ( Ptr wndData, boolean showIt );

native static synchronized void wndToBack ( Ptr wndData );

native static synchronized void wndToFront ( Ptr wndData );
}