Java Code Examples for org.eclipse.swt.widgets.Canvas#setBackground()

public TimelineComposite(Composite parent, int style) {
	super(parent, style);

	fResourceManager = new LocalResourceManager(JFaceResources.getResources(), this);

	final FillLayout layout = new FillLayout();
	layout.marginHeight = 10;
	layout.marginWidth = 10;
	setLayout(layout);

	setBackground(ColorConstants.black);

	final Canvas canvas = new Canvas(this, SWT.DOUBLE_BUFFERED);
	canvas.setBackground(ColorConstants.black);
	final LightweightSystem lightWeightSystem = new LightweightSystem(canvas);

	fRootFigure = new RootFigure(fResourceManager);
	fRootFigure.setFont(parent.getFont());
	lightWeightSystem.setContents(fRootFigure);

	// draw2d does not directly support mouseWheelEvents, so register on canvas
	canvas.addMouseWheelListener(new TimelineScaler(this));
}
 

private void createPreviewArea( Composite parent )
{
	Composite cmpPreview = ChartUIUtil.createCompositeWrapper( parent );
	{
		GridData gridData = new GridData( GridData.FILL_BOTH );
		gridData.widthHint = CENTER_WIDTH_HINT;
		gridData.heightHint = 200;
		cmpPreview.setLayoutData( gridData );
	}

	Label label = new Label( cmpPreview, SWT.NONE );
	{
		label.setFont( JFaceResources.getBannerFont( ) );
		label.setText( Messages.getString( "TaskSelectData.Label.ChartPreview" ) ); //$NON-NLS-1$
	}

	previewCanvas = new Canvas( cmpPreview, SWT.BORDER );
	{
		GridData gd = new GridData( GridData.FILL_BOTH );
		previewCanvas.setLayoutData( gd );
		previewCanvas.setBackground( Display.getDefault( )
				.getSystemColor( SWT.COLOR_WIDGET_BACKGROUND ) );
	}
}
 

protected void createTopPreviewArea( Composite parent )
{
	Composite cmpPreview = new Composite( parent, SWT.NONE );
	cmpPreview.setLayout( new GridLayout( ) );

	GridData gridData = new GridData( GridData.FILL_BOTH );
	gridData.horizontalSpan = 2;
	gridData.heightHint = 270;
	cmpPreview.setLayoutData( gridData );

	Label label = new Label( cmpPreview, SWT.NONE );
	{
		label.setText( getChartPreviewTitle( ) );
	}

	previewCanvas = new Canvas( cmpPreview, SWT.BORDER );
	previewCanvas.setLayoutData( new GridData( GridData.FILL_BOTH ) );
	previewCanvas.setBackground( Display.getDefault( )
			.getSystemColor( SWT.COLOR_WIDGET_BACKGROUND ) );

	previewPainter = createPreviewPainter( );
}
 

protected void createPopupControl() {
	// overall panel
	final Shell top = getPopup();
	final GridLayout layout = new GridLayout(3, true);
	layout.horizontalSpacing = 0;
	layout.verticalSpacing = 0;
	layout.marginWidth = 5;
	layout.marginHeight = 5;
	top.setLayout(layout);
	top.setBackground(IGamaColors.BLACK.color());
	if (createExtraInfo) {
		// left overlay info
		left = label(top, SWT.LEFT);
		// center overlay info
		center = label(top, SWT.CENTER);
		// right overlay info
		right = label(top, SWT.RIGHT);
	}
	// coordinates overlay info
	coord = label(top, SWT.LEFT);
	// zoom overlay info
	zoom = label(top, SWT.CENTER);
	// scalebar overlay info
	scalebar = new Canvas(top, SWT.None);
	scalebar.setVisible(true);
	final GridData scaleData = new GridData(SWT.RIGHT, SWT.CENTER, true, false);
	scaleData.minimumWidth = 140;
	scaleData.widthHint = 140;
	scaleData.minimumHeight = 24;
	scaleData.heightHint = 24;
	scalebar.setLayoutData(scaleData);
	scalebar.setBackground(IGamaColors.BLACK.color());
	scalebar.addPaintListener(e -> paintScale(e.gc));
	top.addMouseListener(toggleListener);
	scalebar.addMouseListener(toggleListener);
	top.layout();
}
 

protected void adjustItemNumber() {
	if (fComposite == null)
		return;

	Control[] children= fComposite.getChildren();
	int oldSize= children.length;
	int newSize= fInput == null ? 0 : fInput.fAnnotations.length;

	Display display= fShell.getDisplay();

	// add missing items
	for (int i= oldSize; i < newSize; i++) {
		Canvas canvas= new Canvas(fComposite, SWT.NONE);
		Object gridData= fLayouter.getLayoutData();
		canvas.setLayoutData(gridData);
		canvas.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));

		canvas.addPaintListener(fPaintListener);

		canvas.addMouseTrackListener(fMouseTrackListener);

		canvas.addMouseListener(fMouseListener);

		canvas.addListener(SWT.MenuDetect, fMenuDetectListener);

		canvas.addDisposeListener(fDisposeListener);
	}

	// dispose of exceeding resources
	for (int i= oldSize; i > newSize; i--) {
		Item item= (Item) children[i - 1].getData();
		item.deselect();
		children[i - 1].dispose();
	}

}
 

protected Composite createTitleArea( Composite parent )
{
	Composite cmpTitle = super.createTitleArea( parent );
	// ( (GridData) cmpTitle.getLayoutData( ) ).heightHint = 250;

	previewCanvas = new Canvas( cmpTitle, SWT.BORDER );
	{
		GridData gd = new GridData( GridData.FILL_BOTH );
		gd.horizontalSpan = 2;
		previewCanvas.setLayoutData( gd );
		previewCanvas.setBackground( Display.getDefault( )
				.getSystemColor( SWT.COLOR_WIDGET_BACKGROUND ) );
	}
	return cmpTitle;
}
 

@Override
public void init() {
    final TransitionTest2 me = this;
    
    _containerComposite.setLayout(new FormLayout());
    //_containerComposite.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_BLACK));
    
    imgs = new Image[6];
    for(int i = 0; i < imgs.length; i++)
        imgs[i] = new Image(_containerComposite.getDisplay(), getClass().getResourceAsStream(new Formatter().format("%02d.jpg", i+1).toString()));
    
    final Canvas cnvs = new Canvas(_containerComposite, SWT.DOUBLE_BUFFERED);
    cnvs.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_BLACK));
    FormData fd = new FormData();
    fd.left = new FormAttachment(0, 5);
    fd.right = new FormAttachment(100, -5);
    fd.top = new FormAttachment(0, 5);
    fd.bottom = new FormAttachment(100, -35);
    cnvs.setLayoutData(fd);
    
    final Button btn = new Button(_containerComposite, SWT.PUSH);
    btn.setText("Hit me!");
    fd = new FormData();
    fd.top = new FormAttachment(cnvs, 5);
    fd.bottom = new FormAttachment(100, -5);
    fd.left = new FormAttachment(0, 5);
    fd.right = new FormAttachment(100, -5);
    btn.setLayoutData(fd);
    
    _tm = new TransitionManager(new ImageTransitionable() {
        public void setSelection(int index) {
            me.curImg = index;
        }
    
        public int getSelection() {
            return me.curImg;
        }
    
        public Control getControl(int index) {
            return cnvs;
        }
    
        public Composite getComposite() {
            return _containerComposite;
        }
    
        public double getDirection(int toIndex, int fromIndex) {
            return getSelectedDirection(toIndex, fromIndex);
        }
    
        public void addSelectionListener(SelectionListener listener) {
            final SelectionListener transitionableListener = listener;
            btn.addSelectionListener(new SelectionAdapter() {
                public void widgetSelected(SelectionEvent e) {
                    me.curImg = (me.curImg + 1) % me.imgs.length;
                    transitionableListener.widgetSelected(e);
                }
            });
        }
    });
    _tm.setControlImages(imgs);
    
    cnvs.addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            Image img = me.imgs[me.curImg];
            e.gc.drawImage(
                    img
                    , 0
                    , 0
                    , img.getImageData().width
                    , img.getImageData().height
                    , 0
                    , 0
                    , cnvs.getSize().x
                    , cnvs.getSize().y
                    );
        }
    });
    
}