Examples with Canvas org.eclipse.swt.widgets.Canvas used on opensource projects

Example 56 with Canvas

use of org.eclipse.swt.widgets.Canvas in project archi by archimatetool.

the class OverviewOutlinePage method createControl.

@Override
public void createControl(Composite parent) {
    if (fEditPart == null) {
        return;
    }
    // create canvas and lws
    fCanvas = new Canvas(parent, SWT.NONE);
    LightweightSystem lws = new LightweightSystem(fCanvas);
    fThumbnail = new ScrollableThumbnail((Viewport) fEditPart.getFigure());
    fThumbnail.setUseScaledGraphics(false);
    fThumbnail.setSource(fEditPart.getLayer(LayerConstants.PRINTABLE_LAYERS));
    fThumbnail.setBorder(new MarginBorder(3));
    lws.setContents(fThumbnail);
    // Help
    PlatformUI.getWorkbench().getHelpSystem().setHelp(fCanvas, HELP_ID);
}

Example 57 with Canvas

use of org.eclipse.swt.widgets.Canvas in project archi by archimatetool.

the class BufferedGraphicsSource method flushGraphics.

/**
 * @see org.eclipse.draw2d.GraphicsSource#flushGraphics(org.eclipse.draw2d.geometry.Rectangle)
 */
@Override
public void flushGraphics(Rectangle region) {
    if (inUse.isEmpty())
        return;
    boolean restoreCaret = false;
    Canvas canvas = null;
    if (control instanceof Canvas) {
        canvas = (Canvas) control;
        Caret caret = canvas.getCaret();
        if (caret != null)
            restoreCaret = caret.isVisible();
        if (restoreCaret && caret != null)
            caret.setVisible(false);
    }
    /*
         * The imageBuffer may be null if double-buffering was not successful.
         */
    if (imageBuffer != null) {
        imageGC.dispose();
        controlGC.drawImage(getImage(), 0, 0, inUse.width, inUse.height, inUse.x, inUse.y, inUse.width, inUse.height);
        imageBuffer.dispose();
        imageBuffer = null;
        imageGC = null;
    }
    controlGC.dispose();
    controlGC = null;
    if (restoreCaret && canvas != null)
        canvas.getCaret().setVisible(true);
}

Example 58 with Canvas

use of org.eclipse.swt.widgets.Canvas in project cogtool by cogtool.

the class Draw2DMouseState method dealWithEvent.

// Force subclasses to implement the "dealWith" versions
/**
     * Returns true if subclass processing should continue, false
     * if subclass processing should be terminated.
     */
protected boolean dealWithEvent(Event evt) {
    if (evt.type == SWT.MenuDetect) {
        // that each of our windows using Draw2D contains only one Canvas!
        if (isMenuClick || (OSUtils.MACOSX && (evt.widget instanceof Canvas))) {
            Canvas c = (Canvas) evt.widget;
            Text focusedText = WindowUtil.getFocusedText();
            if (focusedText != null) {
                if (focusedText instanceof ManagedText) {
                    ManagedText txt = (ManagedText) focusedText;
                    if (!txt.confirm(ManagedText.LOSE_FOCUS)) {
                        return false;
                    }
                }
                c.forceFocus();
            }
            Combo focusedCombo = WindowUtil.getFocusedCombo();
            if (focusedCombo != null) {
                if (focusedCombo instanceof ManagedCombo) {
                    ManagedCombo combo = (ManagedCombo) focusedCombo;
                    if (!combo.confirm(ManagedCombo.LOSE_FOCUS)) {
                        return false;
                    }
                }
                c.forceFocus();
            }
            Point p = c.toControl(evt.x, evt.y);
            menuUI.showContextMenu(p.x, p.y);
        } else {
            menuUI.showContextMenu();
        }
    }
    return true;
}

Example 59 with Canvas

use of org.eclipse.swt.widgets.Canvas in project translationstudio8 by heartsome.

the class CheckBoxCellEditor method activateCell.

/**
	 * As soon as the editor is activated, flip the current data value and commit it.<br/>
	 * The repaint will pick up the new value and flip the image.
	 */
@Override
protected Control activateCell(Composite parent, Object originalCanonicalValue, Character initialEditValue) {
    setCanonicalValue(originalCanonicalValue);
    checked = !checked;
    canvas = new Canvas(parent, SWT.NONE);
    canvas.addPaintListener(new PaintListener() {

        public void paintControl(PaintEvent paintEvent) {
            Rectangle bounds = canvas.getBounds();
            Rectangle rect = new Rectangle(0, 0, bounds.width, bounds.height);
            checkBoxCellPainter.paintIconImage(paintEvent.gc, rect, bounds.height / 2 - checkBoxCellPainter.getPreferredHeight(checked) / 2, checked);
        }
    });
    canvas.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseUp(MouseEvent e) {
            checked = !checked;
            canvas.redraw();
        }
    });
    commit(MoveDirectionEnum.NONE, false);
    return canvas;
}

Example 60 with Canvas

use of org.eclipse.swt.widgets.Canvas in project dbeaver by serge-rider.

the class ProgressEditorPart method createProgressPane.

private void createProgressPane(final Composite parent) {
    progressCanvas = new Canvas(parent, SWT.NONE);
    progressCanvas.addPaintListener(new PaintListener() {

        @Override
        public void paintControl(PaintEvent e) {
            e.gc.drawText("Connecting to datasource '" + getEditorInput().getDatabaseObject().getName() + "'...", 5, 5, true);
        }
    });
    InitNodeService loadingService = new InitNodeService();
    LoadingJob<IDatabaseEditorInput> loadJob = LoadingJob.createService(loadingService, new InitNodeVisualizer(loadingService));
    loadJob.schedule();
}