org.eclipse.swt.graphics.Transform Java Examples

/**
 * Creates a new instance.
 * 
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice()); 
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

private void rotateTransform(Transform transform) {
	switch (angle) {
	case 90:
		transform.translate(0, size.y);
		break;
	case 180:
		transform.translate(size.x, size.y);
		break;
	case 270:
		transform.translate(size.x, 0);
		break;
	default:
		PaperClips.error(SWT.ERROR_INVALID_ARGUMENT,
				"Rotation angle must be 90, 180 or 270."); //$NON-NLS-1$
	}
	transform.rotate(-angle); // reverse the angle since Transform.rotate
	// goes clockwise
}
 

/**
 * Creates a new instance.
 * 
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice()); 
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

/**
 * Creates a new instance.
 *
 * @param parent
 *            the parent.
 * @param style
 *            the style.
 */
public SWTStrokeCanvas(final Composite parent, final int style) {
	super(parent, style);
	addPaintListener(e -> {
		final BasicStroke stroke = getStroke();
		if (stroke != null) {
			int x, y;
			final Rectangle rect = getClientArea();
			x = (rect.width - 100) / 2;
			y = (rect.height - 16) / 2;
			final Transform swtTransform = new Transform(e.gc.getDevice());
			e.gc.getTransform(swtTransform);
			swtTransform.translate(x, y);
			e.gc.setTransform(swtTransform);
			swtTransform.dispose();
			e.gc.setBackground(getDisplay().getSystemColor(SWT.COLOR_BLACK));
			e.gc.setLineWidth((int) stroke.getLineWidth());
			e.gc.drawLine(10, 8, 90, 8);
		}
	});
}
 

@Override
protected Image renderRotated( Device device, int width, int height, double angleRadians ) {
  Image result = new Image( device, width * 2, height * 2 );

  GC gc = new GC( result );

  int bw = bitmap.getBounds().width;
  int bh = bitmap.getBounds().height;
  Transform affineTransform = new Transform( device );
  affineTransform.translate( width, height );
  affineTransform.rotate( (float) Math.toDegrees( angleRadians ) );
  affineTransform.scale( (float) 1.0 * width / bw, (float) 1.0 * height / bh );
  gc.setTransform( affineTransform );

  gc.drawImage( bitmap, 0, 0, bw, bh, -bw / 2, -bh / 2, bw, bh );

  gc.dispose();

  return result;
}
 

/**
 * Creates a new instance.
 * 
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice()); 
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

@Override
protected Image renderRotated( Device device, int width, int height, double angleRadians ) {
  Image result = new Image( device, width * 2, height * 2 );

  GC gc = new GC( result );

  int bw = bitmap.getBounds().width;
  int bh = bitmap.getBounds().height;
  Transform affineTransform = new Transform( device );
  affineTransform.translate( width, height );
  affineTransform.rotate( (float) Math.toDegrees( angleRadians ) );
  affineTransform.scale( (float) zoomFactor * width / bw, (float) zoomFactor * height / bh );
  gc.setTransform( affineTransform );

  gc.drawImage( bitmap, 0, 0, bw, bh, -bw / 2, -bh / 2, bw, bh );

  gc.dispose();

  return result;
}
 

/**
 * Creates a new instance.
 * 
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice()); 
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

private void zoom(double s) {
	checkWidget();
	if (selectionLayerImage == null)
		return;
	if (s < 0.1)
		s = 0.1;
	if (s > 3)
		s = 3;
	int width = (int) (selectionLayerImage.getBounds().width * s);
	int height = (int) (selectionLayerImage.getBounds().height * s);
	if (width == 0 || height == 0)
		return;
	zoomLayerImage = new Image(getDisplay(), width, height);
	Transform tf = new Transform(getDisplay());
	tf.scale((float) s, (float) s);
	GC gc = new GC(zoomLayerImage);
	gc.setTransform(tf);
	gc.drawImage(selectionLayerImage, 0, 0);
	gc.dispose();
	tf.dispose();
	currentZoom = s;
	updateScrollbars();
	redraw();
}
 

/**
 * Creates a new instance.
 * 
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice()); 
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

/**
 * Creates a new instance.
 * 
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice()); 
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

/**
 * Creates a new instance.
 *
 * @param parent  the parent.
 * @param style  the style.
 */
public SWTStrokeCanvas(Composite parent, int style) {
    super(parent, style);
    addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            BasicStroke stroke = (BasicStroke) getStroke();
            if (stroke != null) {
                int x, y;
                Rectangle rect = getClientArea();
                x = (rect.width - 100) / 2;
                y = (rect.height - 16) / 2;
                Transform swtTransform = new Transform(e.gc.getDevice());
                e.gc.getTransform(swtTransform);
                swtTransform.translate(x, y);
                e.gc.setTransform(swtTransform);
                swtTransform.dispose();
                e.gc.setBackground(getDisplay().getSystemColor(
                        SWT.COLOR_BLACK));
                e.gc.setLineWidth((int) stroke.getLineWidth());
                e.gc.drawLine(10, 8, 90, 8);
            }
        }
    });
}
 

public Parameters(GC gc, Color styledTextForeground, Point size,
        int lineCount, int marginCols, Color marginColor, int spacing, int imageHeight, Transform transform,
        Image tmpImage) {
    this.gc = gc;
    this.styledTextForeground = styledTextForeground;
    this.size = size;
    this.lineCount = lineCount;
    this.marginCols = marginCols;
    this.marginColor = marginColor;
    this.spacing = spacing;
    this.imageHeight = imageHeight;
    this.transform = transform;
    this.tmpImage = tmpImage;
}
 

/**
 * Applies a scale transform.
 *
 * @param scaleX  the scale factor along the x-axis.
 * @param scaleY  the scale factor along the y-axis.
 */
public void scale(double scaleX, double scaleY) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.scale((float) scaleX, (float) scaleY);
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Equivalent to <code><b>GC.setTransform()</b></code> in r3.1.
 * 
 * @param gc
 * @param value
 */
static void setTransform( GC gc, Object value )
{
	if ( R31_AVAILABLE )
	{
		gc.setTransform( (Transform) value );
	}
}
 

/**
 * Equivalent to <code><b>Transform.rotate()</b></code> in r3.1.
 * 
 * @param gc
 * @param transform
 * @param value
 */
static void rotate( GC gc, Object transform, float value )
{
	if ( R31_AVAILABLE )
	{
		( (Transform) transform ).rotate( value );
	}
}
 

/**
 * Equivalent to <code><b>Transform.dispose()</b></code> in r3.1.
 * 
 * @param transform
 */
static void disposeTransform( Object transform )
{
	if ( R31_AVAILABLE )
	{
		( (Transform) transform ).dispose( );
	}
}
 

/**
 * Concatenates the specified transform to the existing transform.
 *
 * @param t  the transform.
 */
public void transform(AffineTransform t) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.multiply(getSwtTransformFromPool(t));
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Applies a translation.
 *
 * @param x  the translation along the x-axis.
 * @param y  the translation along the y-axis.
 */
public void translate(int x, int y) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.translate(x, y);
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Equivalent to <code><b>new Transform()</b></code> in r3.1.
 * 
 * @param param
 * @return
 */
static Object newTransform( Device param )
{
	if ( R31_AVAILABLE )
	{
		return new Transform( param );
	}

	return null;
}
 

/**
 * Returns the current transform.
 *
 * @return The current transform.
 */
public AffineTransform getTransform() {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    AffineTransform awtTransform = toAwtTransform(swtTransform);
    swtTransform.dispose();
    return awtTransform;
}
 

/**
 * Concatenates the specified transform to the existing transform.
 *
 * @param t  the transform.
 */
public void transform(AffineTransform t) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.multiply(getSwtTransformFromPool(t));
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Returns the current transform.
 *
 * @return The current transform.
 */
public AffineTransform getTransform() {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    AffineTransform awtTransform = toAwtTransform(swtTransform);
    swtTransform.dispose();
    return awtTransform;
}
 

/**
 * Applies a scale transform.
 *
 * @param scaleX  the scale factor along the x-axis.
 * @param scaleY  the scale factor along the y-axis.
 */
public void scale(double scaleX, double scaleY) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.scale((float) scaleX, (float) scaleY);
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Applies a translation.
 *
 * @param x  the translation along the x-axis.
 * @param y  the translation along the y-axis.
 */
public void translate(int x, int y) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.translate(x, y);
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Concatenates the specified transform to the existing transform.
 *
 * @param t  the transform.
 */
public void transform(AffineTransform t) {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    swtTransform.multiply(getSwtTransformFromPool(t));
    this.gc.setTransform(swtTransform);
    swtTransform.dispose();
}
 

/**
 * Returns the current transform.
 *
 * @return The current transform.
 */
public AffineTransform getTransform() {
    Transform swtTransform = new Transform(this.gc.getDevice());
    this.gc.getTransform(swtTransform);
    AffineTransform awtTransform = toAwtTransform(swtTransform);
    swtTransform.dispose();
    return awtTransform;
}
 

/**
 * Set the rotation of the header text. Please note that you have to call <code>redraw()</code> on the table
 * yourself if you change the rotation while the table is showing.
 * 
 * @param rotation rotation in degrees anti clockwise between 0 and 90 degrees.
 */
public void setRotation(int rotation) {
    if (rotation < 0 || rotation > 90) {
        throw new IllegalArgumentException("Rotation range 0..90");
    }
    if (_rotation != rotation) {
        disposeTransformations();
        _rotation = rotation;
        _transform = new Transform(Display.getCurrent());
        _transformInv = new Transform(Display.getCurrent());
        _transform.rotate(-rotation);
        _transformInv.rotate(-rotation);
        _transformInv.invert();
    }
}
 

@Override
public void paintControl(PaintEvent e) {
	int w = e.width;
	int h = e.height;
	Transform tr = new Transform(e.display);
	tr.translate(w / 2, h / 2);
	tr.rotate(rotationAngle);
	e.gc.setTransform(tr);
	tr.dispose();
	int drawHeight = -w + 2;
	e.gc.drawString(sectionExpanded ? "" : text, 0, drawHeight % 2 != 0 ? drawHeight + 1 : drawHeight - 1);
}
 

protected void drawIconBorder(Label icon, GC gc) {
	Rectangle rect = new Rectangle(0, 0, icon.getBounds().width - 1, icon.getBounds().height - 1);
	Transform t = new Transform(getDisplay());
	gc.setTransform(t);
	t.dispose();
	gc.setForeground(ColorConstants.lightGray);
	gc.drawRectangle(0, 0, rect.width, rect.height);
}