Example usage for java.awt Graphics create

Introduction

In this page you can find the example usage for java.awt Graphics create.

Prototype

public abstract Graphics create();

Source Link

Document

Creates a new Graphics object that is a copy of this Graphics object.

Usage

From source file:Main.java

static void drawArrow(Graphics g1, int x1, int y1, int x2, int y2) {
    // x1 and y1 are coordinates of circle or rectangle
    // x2 and y2 are coordinates of circle or rectangle, to this point is directed the arrow
    Graphics2D g = (Graphics2D) g1.create();
    double dx = x2 - x1;
    double dy = y2 - y1;
    double angle = Math.atan2(dy, dx);
    int len = (int) Math.sqrt(dx * dx + dy * dy);
    AffineTransform t = AffineTransform.getTranslateInstance(x1, y1);
    t.concatenate(AffineTransform.getRotateInstance(angle));
    g.transform(t);//www .ja  v a  2  s . c  o m
    g.drawLine(0, 0, len, 0);
    int basePosition = len - ARROW_HEAD_SIZE.width;
    int height = ARROW_HEAD_SIZE.height;
    g.fillPolygon(new int[] { len, basePosition, basePosition, len }, new int[] { 0, -height, height, 0 }, 4);
}

From source file:Main.java

/**
 * Draws a double headed arrow with arrow heads of a given width and height.
 * /* www.j  a va2s.c  o m*/
 * @param aG
 *          the canvas to draw on;
 * @param aX1
 *          the starting X position of the arrow;
 * @param aY1
 *          the starting Y position of the arrow;
 * @param aX2
 *          the ending X position of the arrow;
 * @param aY2
 *          the ending Y position of the arrow;
 * @param aArrowWidth
 *          the total width of the arrow head;
 * @param aArrowHeight
 *          the total height of the arrow head.
 */
public static final void drawDoubleHeadedArrow(final Graphics aG, final int aX1, final int aY1, final int aX2,
        final int aY2, final int aArrowWidth, final int aArrowHeight) {
    final Graphics2D g2d = (Graphics2D) aG.create();

    final int lineWidth = Math.abs(aX2 - aX1);
    final int threshold = (2 * aArrowWidth) + 2;
    try {
        int x1 = aX1;
        int x2 = aX2;

        if (lineWidth > threshold) {
            drawArrowHead(g2d, aX1, aY1, LEFT_FACING, aArrowWidth, aArrowHeight);
            // why x2 needs to be shifted by one pixel is beyond me...
            drawArrowHead(g2d, aX2 + 1, aY2, RIGHT_FACING, aArrowWidth, aArrowHeight);

            x1 += aArrowWidth - 1;
            x2 -= aArrowWidth + 1;
        }

        g2d.drawLine(x1, aY1, x2, aY2);
    } finally {
        g2d.dispose();
    }
}

From source file:Main.java

public void paint(Graphics g) {
    g.setColor(Color.red);/*w  ww.j  a  v  a 2  s  . com*/
    Graphics clippedGraphics = g.create();
    clippedGraphics.drawRect(0, 0, 100, 100);
    clippedGraphics.clipRect(25, 25, 50, 50);
    clippedGraphics.drawLine(0, 0, 100, 100);
    clippedGraphics.dispose();
    clippedGraphics = null;
    g.drawLine(0, 100, 100, 0);
}

From source file:Main.java

public void paint(Graphics g) {
    g.setColor(Color.red);//  ww  w. java2  s  .  c  om
    Graphics clippedGraphics = g.create();
    clippedGraphics.drawRect(0, 0, 100, 100);
    clippedGraphics.clipRect(25, 25, 50, 50);
    clippedGraphics.drawLine(0, 0, 100, 100);
    clippedGraphics.finalize();
    clippedGraphics = null;
    g.drawLine(0, 100, 100, 0);
}

From source file:Main.java

@Override
public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g.create();
    if (!on) {// ww  w .java 2s  .co m
        g2d.setComposite(AlphaComposite.SrcOver.derive(0f));
    } else {
        g2d.setComposite(AlphaComposite.SrcOver.derive(1f));
    }
    super.paint(g2d);
    g2d.dispose();
}

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    Graphics2D g2d = (Graphics2D) g.create();
    g2d.setColor(getBackground());/*ww  w. j av a2  s  . c  o m*/
    g2d.fillRect(0, 0, getWidth(), getHeight());
    if (image != null) {
        int x = getWidth() - image.getWidth();
        int y = getHeight() - image.getHeight();
        g2d.drawImage(image, x, y, this);
    }
    super.paintComponent(g2d);
    g2d.dispose();
}

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g.create();
    String text = getWidth() + "x" + getHeight();
    FontMetrics fm = g2d.getFontMetrics();
    int x = (getWidth() - fm.stringWidth(text)) / 2;
    int y = ((getHeight() - fm.getHeight()) / 2) + fm.getAscent();
    g2d.drawString(text, x, y);//ww  w  .j  a  va2 s  .c  o m
    g2d.dispose();
}

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g.create();
    String text = "I don't see the problem";
    FontMetrics fm = g2d.getFontMetrics();
    int x = (getWidth() - fm.stringWidth(text)) / 2;
    int y = ((getHeight() - fm.getHeight()) / 2) + fm.getDescent();
    g2d.setTransform(AffineTransform.getRotateInstance(Math.toRadians(45), getWidth() / 2, getHeight() / 2));
    g2d.drawString(text, x, y);//from  www.  j  av  a 2s  .co m
    g2d.dispose();
}

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g.create();
    g2d.setColor(Color.RED);/*w ww  .j a  v a 2s  . co m*/
    g2d.drawLine(0, 0, getWidth(), getHeight());
    g2d.drawLine(getWidth(), 0, 0, getHeight());
    g2d.dispose();
}

From source file:Main.java

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g.create();
    g2d.setComposite(AlphaComposite.SrcOver.derive(0.5f));
    g2d.fillRect(10, 10, getWidth(), getHeight());
    g2d.dispose();//from  w  w w  .  ja v a2  s  . c o  m
}