Java Code Examples for java.awt.Graphics2D#fillRect()

protected BufferedImage createTestImage(int numColors) {

        IndexColorModel icm = createTestICM(numColors);
        int w = numColors * 10;
        int h = 20;

        BufferedImage img = new BufferedImage(w, h,
                BufferedImage.TYPE_BYTE_INDEXED, icm);

        Graphics2D g = img.createGraphics();
        for (int i = 0; i < numColors; i++) {
            int rgb = icm.getRGB(i);
            //System.out.printf("pixel %d, rgb %x\n", i, rgb);
            g.setColor(new Color(rgb));
            g.fillRect(i * 10, 0, w - i * 10, h);
        }
        g.dispose();

       return img;
    }
 

private static void draw(final Image img) {
    float[] dashes = {200.0f, 200.0f};
    BasicStroke bs = new BasicStroke(20.0f,
                                     BasicStroke.CAP_BUTT,
                                     BasicStroke.JOIN_MITER,
                                     1.0f,
                                     dashes,
                                     0.0f);
    Graphics2D g = (Graphics2D) img.getGraphics();
    g.setColor(Color.WHITE);
    g.fillRect(0, 0, 200, 40);
    Line2D line = new Line2D.Double(400, 400, 3600, 400);
    g.setColor(Color.BLACK);
    g.scale(0.05, 0.05);
    g.setStroke(bs);
    g.draw(line);
    g.dispose();
}
 

static void printInsets(PrintWriter html, Insets insets) {
    html.println("<td>Insets (" + insets.top + "," + insets.left + "," + insets.bottom + "," + insets.right + ")</pre></td>");
    int w = 50 + insets.left + insets.right;
    int h = 20 + insets.top + insets.bottom;
    BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2 = img.createGraphics();
    Composite old = g2.getComposite();
    g2.setComposite(AlphaComposite.Clear);
    g2.fillRect(0, 0, w, h);
    g2.setComposite(old);
    g2.setColor(Color.BLACK);
    g2.drawRect(insets.left, insets.top, 49, 19);
    g2.setColor(Color.RED);
    g2.drawRect(0, 0, w - 1, h - 1);
    g2.dispose();
    html.println("<td>" + saveImage(img) + "</td>");
}
 

@Override
public void renderItems (Graphics2D g)
{
    // Render seeds
    for (Arc arc : arcsMap.values()) {
        setColor(arc, g);

        for (Point p : arc.getPoints()) {
            g.fillRect(p.x, p.y, 1, 1);
        }
    }

    //        // Render artificial junction points (for vertical parts)
    //        for (Point p : arcsPivots) {
    //            g.setColor(Color.MAGENTA);
    //            g.fillOval(p.x, p.y, 1, 1);
    //        }
}
 

public void paintObject(Graphics2D g, double scale) {
     Rectangle bounds = getBounds(scale);

     if (style != null) style.setStyle(g);
     Style[] styles = context.flagger.getStyles(element);
     for (int i = 0; i < styles.length; i++) {
styles[i].setStyle(g);
     }

     if (style.isFilled()) {
Color c = g.getColor();
g.setColor(style.getBackground());
g.fillRect(bounds.x, bounds.y, bounds.width, bounds.height);
g.setColor(c);
     }

     Point[] tp = getTextPositions(scale);
     TextLayout[] tl = getTextLines(scale);
     for (int i = 0; i < tp.length; i++) {
tl[i].draw(g, tp[i].x, tp[i].y);
     }
   }
 

public static BufferedImage getEmptyImage(
    final int width,
    final int height,
    final Color backgroundColor,
    final Color outputTransparentColor,
    final ColorModel defaultColorModel) {
  BufferedImage emptyImage =
      new BufferedImage(
          defaultColorModel,
          defaultColorModel.createCompatibleWritableRaster(width, height),
          defaultColorModel.isAlphaPremultiplied(),
          null);

  final Graphics2D g2D = (Graphics2D) emptyImage.getGraphics();
  final Color save = g2D.getColor();
  g2D.setColor(backgroundColor);
  g2D.fillRect(0, 0, emptyImage.getWidth(), emptyImage.getHeight());
  g2D.setColor(save);

  if (outputTransparentColor != null) {
    emptyImage =
        new RenderedImageAdapter(
            ImageUtilities.maskColor(outputTransparentColor, emptyImage)).getAsBufferedImage();
  }
  return emptyImage;
}
 

/**
 * Creates a time series chart diagram and writes it to the OutputStream.
 */
public void producePresentation(Map<String, OXFFeatureCollection> entireCollMap,
        DesignOptions options, FileOutputStream out, boolean compress) throws OXFException,
        IOException {

    // render features:
    int width = options.getWidth();
    int height = options.getHeight();
    Calendar begin = Calendar.getInstance();
    begin.setTimeInMillis(options.getBegin());
    Calendar end = Calendar.getInstance();
    end.setTimeInMillis(options.getEnd());

    DiagramRenderer renderer = new DiagramRenderer(false);

    JFreeChart diagramChart = renderer.renderChart(entireCollMap, options, begin, end, compress);
    diagramChart.removeLegend();
    
    // draw chart into image:
    BufferedImage diagramImage = new BufferedImage(width, height, TYPE_INT_RGB);
    Graphics2D chartGraphics = diagramImage.createGraphics();
    chartGraphics.setColor(Color.white);
    chartGraphics.fillRect(0, 0, width, height);

    diagramChart.draw(chartGraphics, new Rectangle2D.Float(0, 0, width, height));

    JPEGImageWriteParam p = new JPEGImageWriteParam(null);
    p.setCompressionMode(JPEGImageWriteParam.MODE_DEFAULT);
    write(diagramImage, FORMAT, out);
}
 

@Override
public void drawIcon(Graphics2D g2, int width, int height, int percentage) {
	g2.setColor(Color.WHITE);
	g2.setPaint(new GradientPaint(0, 0, Color.WHITE.darker(), 0, (float) (height * 0.5), Color.WHITE, true));
	g2.fillRect(0, 0, width, height);
	g2.setColor(Color.GREEN);
	g2.setPaint(new GradientPaint(0, 0, Color.GREEN.darker(), percentage, (float) (height * 0.5), Color.GREEN
			.darker().darker(), false));
	g2.fillRect(0, 0, (int) (percentage * 200d / 100d), height);
	g2.setColor(Color.BLACK);
	g2.drawRect(0, 0, width - 1, height - 1);
	g2.dispose();
}
 

private static Image createTrayIconImage() {
    /**
     * Create a small image of a red circle to use as the icon for the tray icon
     */
    int trayIconImageSize = 32;
    final BufferedImage trayImage = new BufferedImage(trayIconImageSize, trayIconImageSize, BufferedImage.TYPE_INT_ARGB);
    final Graphics2D trayImageGraphics = (Graphics2D) trayImage.getGraphics();

    trayImageGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    trayImageGraphics.setColor(new Color(255, 255, 255, 0));
    trayImageGraphics.fillRect(0, 0, trayImage.getWidth(), trayImage.getHeight());

    trayImageGraphics.setColor(Color.red);

    int trayIconImageInset = 4;
    trayImageGraphics.fillOval(trayIconImageInset,
            trayIconImageInset,
            trayImage.getWidth() - 2 * trayIconImageInset,
            trayImage.getHeight() - 2 * trayIconImageInset);

    trayImageGraphics.setColor(Color.darkGray);

    trayImageGraphics.drawOval(trayIconImageInset,
            trayIconImageInset,
            trayImage.getWidth() - 2 * trayIconImageInset,
            trayImage.getHeight() - 2 * trayIconImageInset);

    return trayImage;
}
 

/**
 * Clear a transparent image to 100% transparent
 *
 * @param img The image to clear
 */
static void clearImage(BufferedImage img) {
    Graphics2D g2 = img.createGraphics();
    g2.setComposite(AlphaComposite.Clear);
    g2.fillRect(0, 0, img.getWidth(), img.getHeight());
    g2.dispose();
}
 

public void fillTransparent() {
    // Make all pixels transparent
    Graphics2D g = (Graphics2D) getGraphics();
    g.setComposite(AlphaComposite.Src);
    g.setColor(new Color(0, 0, 0, 0f));
    g.fillRect(0, 0, getWidth(), getHeight());
}
 

private static final Image clearImage(Image bb) {
    Graphics2D g = (Graphics2D)bb.getGraphics();
    int w = bb.getWidth(null);
    int h = bb.getHeight(null);

    g.setComposite(AlphaComposite.Src);
    g.setColor(new Color(0, 0, 0, 0));
    g.fillRect(0, 0, w, h);

    return bb;
}
 

private static VolatileImage getVolatileImage(GraphicsConfiguration gc,
                                              int size) {
    VolatileImage vi = gc.createCompatibleVolatileImage(size, size);
    Graphics2D g2d = vi.createGraphics();
    g2d.setColor(Color.GREEN);
    g2d.fillRect(0, 0, size, size);
    return vi;
}
 

public void test() throws IOException
{
	for (int count = 1; count < MAX_RECTS; count++)
	{
		for (int r = 0; r < ITERATIONS; r++)
		{
			Random rand = new Random(count << 16 | r);
			String id = count + "rects_iteration" + r;
			log.info(id);
			BufferedImage wanted = new BufferedImage(WIDTH, WIDTH, BufferedImage.TYPE_BYTE_BINARY);
			BufferedImage got = new BufferedImage(WIDTH, WIDTH, BufferedImage.TYPE_BYTE_BINARY);

			Graphics2D wg = wanted.createGraphics();
			wg.setColor(Color.WHITE);
			Graphics2D gg = got.createGraphics();
			gg.setColor(Color.WHITE);

			List<RectangleUnion.Rectangle> rects = new ArrayList<>(count);

			for (int i = 0; i < count; i++)
			{
				int x1, y1, x2, y2;

				do
				{
					x1 = rand.nextInt(WIDTH);
					x2 = rand.nextInt(WIDTH);
				}
				while (x1 >= x2);

				do
				{
					y1 = rand.nextInt(WIDTH);
					y2 = rand.nextInt(WIDTH);
				}
				while (y1 >= y2);

				RectangleUnion.Rectangle rect = new RectangleUnion.Rectangle(x1, y1, x2, y2);
				log.trace("{}", rect);
				rects.add(rect);

				wg.fillRect(x1, y1, x2 - x1, y2 - y1);
			}

			Shape union = RectangleUnion.union(rects);

			gg.fill(union);

			loop:
			for (int x = 0; x < WIDTH; x++)
			{
				for (int y = 0; y < WIDTH; y++)
				{
					if (wanted.getRGB(x, y) != got.getRGB(x, y))
					{
						File tmp = new File(System.getProperty("java.io.tmpdir"));
						ImageIO.write(wanted, "png", new File(tmp, id + "_wanted.png"));
						ImageIO.write(got, "png", new File(tmp, id + "_got.png"));

						Assert.fail(id);
						break loop;
					}
				}
			}
		}
	}
}
 

@Override
public synchronized void paintTrack(Graphics g) {
	int mode = colorPicker.getMode();
	if(mode==ColorPicker.HUE || mode==ColorPicker.BRI || mode==ColorPicker.SAT) {
		float[] hsb = colorPicker.getHSB();
		if(mode==ColorPicker.HUE) {
			for(int y = 0; y<trackRect.height; y++) {
				float hue = ((float)y)/((float)trackRect.height);
				intArray[y] = Color.HSBtoRGB( hue, 1, 1);
			}
		} else if(mode==ColorPicker.SAT) {
			for(int y = 0; y<trackRect.height; y++) {
				float sat = 1-((float)y)/((float)trackRect.height);
				intArray[y] = Color.HSBtoRGB( hsb[0], sat, hsb[2]);
			}
		} else {
			for(int y = 0; y<trackRect.height; y++) {
				float bri = 1-((float)y)/((float)trackRect.height);
				intArray[y] = Color.HSBtoRGB( hsb[0], hsb[1], bri);
			}
		}
	} else {
		int[] rgb = colorPicker.getRGB();
		if(mode==ColorPicker.RED) {
			for(int y = 0; y<trackRect.height; y++) {
				int red = 255-(int)(y*255/trackRect.height+.49);
				intArray[y] = (red << 16)+(rgb[1] << 8)+(rgb[2]);
			}
		} else if(mode==ColorPicker.GREEN) {
			for(int y = 0; y<trackRect.height; y++) {
				int green = 255-(int)(y*255/trackRect.height+.49);
				intArray[y] = (rgb[0] << 16)+(green << 8)+(rgb[2]);
			}
		} else if(mode==ColorPicker.BLUE) {
			for(int y = 0; y<trackRect.height; y++) {
				int blue = 255-(int)(y*255/trackRect.height+.49);
				intArray[y] = (rgb[0] << 16)+(rgb[1] << 8)+(blue);
			}
		}
	}
	Graphics2D g2 = (Graphics2D)g;
	Rectangle r = new Rectangle(6, trackRect.y, 14, trackRect.height);
	if(slider.hasFocus()) {
		PlafPaintUtils.paintFocus(g2,r,3);
	}
	
	bi.getRaster().setDataElements(0,0,1,trackRect.height,intArray);
	TexturePaint p = new TexturePaint(bi,new Rectangle(0,trackRect.y,1,bi.getHeight()));
	g2.setPaint(p);
	g2.fillRect(r.x,r.y,r.width,r.height);
	
	PlafPaintUtils.drawBevel(g2, r);
}
 

/**
 * Visualize node's location, radio ranges and connections
 * @param g2 The graphic context to draw to
 */
private void drawHost(Graphics2D g2) {
	Coord loc = node.getLocation();

	if (drawCoverage && node.isRadioActive()) {
		ArrayList<NetworkInterface> interfaces =
			new ArrayList<NetworkInterface>();
		interfaces.addAll(node.getInterfaces());
		for (NetworkInterface ni : interfaces) {
			double range = ni.getTransmitRange();
			Ellipse2D.Double coverage;

			coverage = new Ellipse2D.Double(scale(loc.getX()-range),
					scale(loc.getY()-range), scale(range * 2),
					scale(range * 2));

			// draw the "range" circle
			g2.setColor(rangeColor);
			g2.draw(coverage);
		}
	}

	if (drawConnections) {
		g2.setColor(conColor);
		Coord c1 = node.getLocation();
		ArrayList<Connection> conList = new ArrayList<Connection>();
		// create a copy to prevent concurrent modification exceptions
		conList.addAll(node.getConnections());
		for (Connection c : conList) {
			DTNHost otherNode = c.getOtherNode(node);
			Coord c2;

			if (otherNode == null) {
				continue; /* disconnected before drawn */
			}
			c2 = otherNode.getLocation();
			g2.drawLine(scale(c1.getX()), scale(c1.getY()),
					scale(c2.getX()), scale(c2.getY()));
		}
	}


	/* draw node rectangle */
	g2.setColor(hostColor);
	g2.drawRect(scale(loc.getX()-1),scale(loc.getY()-1),
	scale(2),scale(2));

	if (isHighlighted()) {
		g2.setColor(highlightedNodeColor);
		g2.fillRect(scale(loc.getX()) - 3 ,scale(loc.getY()) - 3, 6, 6);
	}

	if (drawNodeName) {
		g2.setColor(hostNameColor);
		// Draw node's address next to it
		g2.drawString(node.toString(), scale(loc.getX()),
				scale(loc.getY()));
	}
}
 

/**
 * Presents the Exceptions if the chart cannot be displayed properly.
 * 
 * @param g2d
 * @param ex
 */
private final void showException( Graphics2D g2d, Exception ex )
{
	String sWrappedException = ex.getClass( ).getName( );
	Throwable th = ex;
	while ( ex.getCause( ) != null )
	{
		ex = (Exception) ex.getCause( );
	}
	String sException = ex.getClass( ).getName( );
	if ( sWrappedException.equals( sException ) )
	{
		sWrappedException = null;
	}

	String sMessage = null;
	if ( th instanceof BirtException )
	{
		sMessage = ( (BirtException) th ).getLocalizedMessage( );
	}
	else
	{
		sMessage = ex.getMessage( );
	}

	if ( sMessage == null )
	{
		sMessage = "<null>";//$NON-NLS-1$
	}

	StackTraceElement[] stea = ex.getStackTrace( );
	Dimension d = getSize( );

	Font fo = new Font( "Monospaced", Font.BOLD, 14 );//$NON-NLS-1$
	g2d.setFont( fo );
	FontMetrics fm = g2d.getFontMetrics( );
	g2d.setColor( Color.WHITE );
	g2d.fillRect( 20, 20, d.width - 40, d.height - 40 );
	g2d.setColor( Color.BLACK );
	g2d.drawRect( 20, 20, d.width - 40, d.height - 40 );
	g2d.setClip( 20, 20, d.width - 40, d.height - 40 );
	int x = 25, y = 20 + fm.getHeight( );
	g2d.drawString( "Exception:", x, y );//$NON-NLS-1$
	x += fm.stringWidth( "Exception:" ) + 5;//$NON-NLS-1$
	g2d.setColor( Color.RED );
	g2d.drawString( sException, x, y );
	x = 25;
	y += fm.getHeight( );
	if ( sWrappedException != null )
	{
		g2d.setColor( Color.BLACK );
		g2d.drawString( "Wrapped In:", x, y );//$NON-NLS-1$
		x += fm.stringWidth( "Wrapped In:" ) + 5;//$NON-NLS-1$
		g2d.setColor( Color.RED );
		g2d.drawString( sWrappedException, x, y );
		x = 25;
		y += fm.getHeight( );
	}
	g2d.setColor( Color.BLACK );
	y += 10;
	g2d.drawString( "Message:", x, y );//$NON-NLS-1$
	x += fm.stringWidth( "Message:" ) + 5;//$NON-NLS-1$
	g2d.setColor( Color.BLUE );
	g2d.drawString( sMessage, x, y );
	x = 25;
	y += fm.getHeight( );
	g2d.setColor( Color.BLACK );
	y += 10;
	g2d.drawString( "Trace:", x, y );//$NON-NLS-1$
	x = 40;
	y += fm.getHeight( );
	g2d.setColor( Color.GREEN.darker( ) );
	for ( int i = 0; i < stea.length; i++ )
	{
		g2d.drawString( stea[i].getClassName( ) + ":"//$NON-NLS-1$
				+ stea[i].getMethodName( ) + "(...):"//$NON-NLS-1$
				+ stea[i].getLineNumber( ), x, y );
		x = 40;
		y += fm.getHeight( );
	}
}
 

protected void renderWorld() {
     Graphics2D g = backImageGraphics2D;

     g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
     float backGroundGrey = 25f / 255f;
     g.setColor(new Color(backGroundGrey, backGroundGrey, backGroundGrey));
     g.fillRect(0, 0, getWidth(), getHeight());

     g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

     // 渲染行走区
     float g4 = 0.4f;
     Color triangleColor = new Color(g4, g4, g4);
     g.setColor(triangleColor);
     for (Triangle triangle : player.getMap().getGraph().getTriangles()) {

         g.fill(triangle);

         //三角形顶点序号
         if (this.isShowTriangleIndex) {
             g.setColor(Color.GREEN);
             g.drawString(String.valueOf(triangle.index), triangle.center.x, triangle.center.z);
         }
         //坐标序号
         if (this.isShowVectorIndex&&triangle.vectorIndex!=null) {
             g.setColor(Color.BLUE);
             g.drawString(String.valueOf(triangle.vectorIndex[0]), triangle.a.x, triangle.a.z);
             g.drawString(String.valueOf(triangle.vectorIndex[1]), triangle.b.x, triangle.b.z);
             g.drawString(String.valueOf(triangle.vectorIndex[2]), triangle.c.x, triangle.c.z);
         }
         //三角形内随机点
if (isRenderRandomPoints) {		
	g.setColor(Color.RED);
	
	Vector3 out=new Vector3();
	float count = triangle.area()/100;
	for(int i=0;i<count;i++) {
		triangle.getRandomPoint(out);
		g.fill(new Ellipse2D.Double(out.getX() - 3 / 2f, out.getZ() - 3 / 2f, 3, 3));
	}
}
 g.setColor(triangleColor);
     }

     //渲染寻路路线
     g.setColor(Color.LIGHT_GRAY);
     if (player.getPaths().size() > 0) {
         Vector3 currentPoint = player.getPos();
         for (int j = 0; j < player.getPaths().size(); j++) {
             Vector3 nextPoint = player.getPaths().get(j);
             g.draw(new Line2D.Double(currentPoint.getX(), currentPoint.getZ(), nextPoint.getX(), nextPoint.getZ()));
             float d = 5f;
             g.fill(new Ellipse2D.Double(nextPoint.getX() - d / 2f, nextPoint.getZ() - d / 2f, d, d));
             currentPoint = nextPoint;
         }
     }
     g.setColor(Color.ORANGE);
     g.draw(new Ellipse2D.Double(stop.x, stop.z, 3, 3));
     g.setColor(Color.red);
     double r = 5;
     g.fill(new Ellipse2D.Double(player.getPos().x - r, player.getPos().z - r, 2 * r, 2 * r));
     renderOther(g);
 }
 

@Override
public BufferedImage doTransform(BufferedImage src, BufferedImage dest) {
    if(gaussianKernelRadius.getValueAsFloat() <= 0.1f) {
        // return a black image to avoid exceptions
        Graphics2D g = dest.createGraphics();
        g.setColor(invert.isChecked() ? Color.WHITE : Color.BLACK);
        g.fillRect(0, 0, dest.getWidth(), dest.getHeight());
        g.dispose();
        return dest;
    }

    long estimatedMemoryMB = estimateNeededMemoryMB(src);
    System.gc(); // needed for the memory estimation
    var memoryInfo = new MemoryInfo();
    long availableMemoryMB = memoryInfo.getAvailableMemoryMB();

    if (estimatedMemoryMB > availableMemoryMB) {
        showNotEnoughMemoryDialog(estimatedMemoryMB, availableMemoryMB);
        dest = src;
        return dest;
    }

    // do not cache this object because it holds a lot of memory!
    var detector = new CannyEdgeDetector();

    detector.setLowThreshold(lowThreshold.getPercentageValF());
    detector.setHighThreshold(highThreshold.getPercentageValF());
    detector.setContrastNormalized(contrastNormalized.isChecked());
    detector.setGaussianKernelRadius(gaussianKernelRadius.getValueAsFloat());
    detector.setGaussianKernelWidth(gaussianKernelWidth.getValue());

    detector.setSourceImage(src);

    detector.process();
    dest = detector.getEdgesImage();

    if (invert.isChecked()) {
        Invert.quickInvert(dest);
    }

    return dest;
}
 

private void render(Graphics2D g) {
    g.setColor(Color.red);
    g.fillRect(0, 0, w, h);
}