Esempio n. 1
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 public void drawScaledImage(BufferedImage im, int x, int y, int w, int h) {
   float scaleX = w * 1.0f / im.getWidth();
   float scaleY = h * 1.0f / im.getHeight();
   AffineTransform tx = new AffineTransform();
   tx.scale(scaleX, scaleY);
   BufferedImageOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
   drawImage(im, op, x, y);
 }
Esempio n. 2
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 private AffineTransform makeTransform(Object o) {
   AffineTransform r = (AffineTransform) ((AffineTransform) o).clone();
   // System.out.println("r:"+r);
   if (origTransform != null) {
     AffineTransform r2 = (AffineTransform) origTransform.clone();
     // System.out.println("r2:"+r2);
     r2.concatenate(r);
     r = r2;
   }
   return r;
 }
Esempio n. 3
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  /**
   * Zoom, preserving the center point on the screen. (When we draw, the center point may be moved
   * in order to maximize the amount of image seen on screen.) *
   */
  void adjustZoom(double z, Point2D cp) {
    if (cp == null) cp = new Point2D.Double(getWidth() / 2, getHeight() / 2);

    Point2D cxt = componentToImage(cp);
    double tx = cp.getX() - cxt.getX() * z;
    double ty = cp.getY() - cxt.getY() * z;

    t = new AffineTransform();
    t.translate(tx, ty);
    t.scale(z, z);

    fit = false;
    repaint();
  }
Esempio n. 4
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    public void mouseDragged(MouseEvent e) {
      int mods = e.getModifiersEx();
      Point dragEnd = e.getPoint();
      boolean shift = (mods & MouseEvent.SHIFT_DOWN_MASK) > 0;
      boolean ctrl = (mods & MouseEvent.CTRL_DOWN_MASK) > 0;
      boolean alt = shift & ctrl;
      ctrl = ctrl & (!alt);
      shift = shift & (!alt);
      boolean nomods = !(shift | ctrl | alt);

      if (dragBegin == null) dragBegin = dragEnd;

      nodrag = false;

      if ((mods & InputEvent.BUTTON3_DOWN_MASK) > 0 || true) {
        double dx = dragEnd.getX() - dragBegin.getX();
        double dy = dragEnd.getY() - dragBegin.getY();

        synchronized (JImage.this) {
          t.preConcatenate(AffineTransform.getTranslateInstance(dx, dy));
        }

        dragBegin = dragEnd;
        repaint();
      }
    }
Esempio n. 5
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  public Point2D componentToImage(Point2D p) {
    Point2D tp = null;

    try {
      tp = t.inverseTransform(p, null);
    } catch (NoninvertibleTransformException ex) {
      // can't happen.
    }

    return tp;
  }
Esempio n. 6
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  // ---------------------------------------------------------
  private synchronized AffineTransform bufferTransform() {
    AffineTransform r = new AffineTransform();
    for (int i = 0; i < a1.size(); i++) {
      int s1 = a1.get(i);
      Object s2 = a2.get(i);
      Object s3[] = null;
      if (s2 instanceof Object[]) s3 = (Object[]) s2;

      if (s1 == setTransform) {
        r = makeTransform(s2);
      }
      if (s1 == shear) r.shear((Double) s3[0], (Double) s3[1]);
      if (s1 == rotate1) r.rotate((Double) s2);
      if (s1 == rotate2) r.rotate((Double) s3[0], (Double) s3[1], (Double) s3[2]);
      if (s1 == scale1) r.scale((Double) s3[0], (Double) s3[1]);
      if (s1 == translate1) r.translate((Double) s3[0], (Double) s3[1]);
      if (s1 == translate2) r.translate((Integer) s3[0], (Integer) s3[1]);
    }
    return r;
  }
Esempio n. 7
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  public synchronized void paint(Graphics gin) {
    Graphics2D g = (Graphics2D) gin;

    if (im == null) return;

    int height = getHeight();
    int width = getWidth();

    if (fit) {
      t = new AffineTransform();
      double scale = Math.min(((double) width) / im.getWidth(), ((double) height) / im.getHeight());
      // we'll re-center the transform in a moment.
      t.scale(scale, scale);
    }

    // if the image (in either X or Y) is smaller than the view port, then center
    // the image with respect to that axis.
    double mwidth = im.getWidth() * t.getScaleX();
    double mheight = im.getHeight() * t.getScaleY();
    if (mwidth < width)
      t.preConcatenate(
          AffineTransform.getTranslateInstance((width - mwidth) / 2.0 - t.getTranslateX(), 0));
    if (mheight < height)
      t.preConcatenate(
          AffineTransform.getTranslateInstance(0, (height - mheight) / 2.0 - t.getTranslateY()));

    // if we're allowing panning (because only a portion of the image is visible),
    // don't allow translations that show less information that is possible.
    Point2D topleft = t.transform(new Point2D.Double(0, 0), null);
    Point2D bottomright = t.transform(new Point2D.Double(im.getWidth(), im.getHeight()), null);

    if (mwidth > width) {
      if (topleft.getX() > 0)
        t.preConcatenate(AffineTransform.getTranslateInstance(-topleft.getX(), 0));
      if (bottomright.getX() < width)
        t.preConcatenate(AffineTransform.getTranslateInstance(width - bottomright.getX(), 0));
      //		    t.translate(width-bottomright.getX(), 0);
    }
    if (mheight > height) {
      if (topleft.getY() > 0)
        t.preConcatenate(AffineTransform.getTranslateInstance(0, -topleft.getY()));
      if (bottomright.getY() < height)
        t.preConcatenate(AffineTransform.getTranslateInstance(0, height - bottomright.getY()));
    }

    g.drawImage(im, t, null);
  }
Esempio n. 8
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  // zoom out a notch
  void zoomOut(Point2D p) {
    double nz = t.getScaleX() * .5;
    nz = Math.max(nz, 1.0 / 32.0);

    adjustZoom(nz, p);
  }
Esempio n. 9
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  // zoom in a notch
  void zoomIn(Point2D p) {
    double nz = t.getScaleX() * 2.0;
    nz = Math.min(nz, 64);

    adjustZoom(nz, p);
  }
Esempio n. 10
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 public void drawScaledImage(BufferedImage im, int x, int y, float scale) {
   AffineTransform tx = new AffineTransform();
   tx.scale(scale, scale);
   BufferedImageOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
   drawImage(im, op, x, y);
 }