Examples with GC org.eclipse.swt.graphics.GC used on opensource projects

Example 1 with GC

use of org.eclipse.swt.graphics.GC in project cogtool by cogtool.

the class GraphicalWidgetBase method regenerateCaches.

protected void regenerateCaches(final int width, final int height) {
    // For performance reasons, we defer regeneration until we exit fast mode
    if (!this.fast) {
        if (View.isDrawingOK()) {
            // Recompute the cached data in the background
            //            new Thread () {
            //                public void run() {
            boolean needsRepaint = false;
            // Recompute the midground cache if it is dirty
            if (cachedMidgroundDirty) {
                needsRepaint = true;
                if ((width == 0) || (height == 0)) {
                    throw new IllegalArgumentException("Width or Height on a widget is 0. This " + "should have been prevented in setShape " + "Size");
                }
                // Create a temporary canvas on which to draw the midground
                Image img = new Image(null, width, height);
                GC gc = new GC(img);
                SWTGraphics g = new SWTGraphics(gc);
                g.setAntialias(SWT.OFF);
                // Use the renderer & clipper to paint the midground nicely
                g.setBackgroundColor(getSelectionColor());
                renderer.paintMidground(g);
                //      value.
                if (OSUtils.WINDOWS) {
                    ImageData id = img.getImageData();
                    id.alpha = displayAlpha.determineAlpha(false);
                    img.dispose();
                    img = new Image(null, id);
                }
                // WARNING: this might dispose img, or it might return it
                // DO NOT DISPOSE img!
                Image newFG = clipper.clip(img);
                // Clean the cache
                cachedMidgroundDirty = false;
                cachedMidground.dispose();
                cachedMidground = newFG;
                //                            cachedMidgroundData = newFG.getImageData();
                // Dispose of temporary resources
                //                            newFG.dispose();
                g.dispose();
                gc.dispose();
            }
            // Recompute the background cache if it is dirty
            if (cachedBackgroundDirty) {
                needsRepaint = true;
                Image newBG = null;
                // Check if background is present
                byte[] bgImageData = model.getImage();
                if (bgImageData != null) {
                    ImageData bg = new ImageData(new ByteArrayInputStream(bgImageData));
                    newBG = clipper.clip(new Image(null, bg.scaledTo(width, height)));
                }
                // Clean the cache
                cachedBackgroundDirty = false;
                if (cachedBackground != null) {
                    cachedBackground.dispose();
                }
                cachedBackground = newBG;
            }
            // Make sure the results of our update are shown
            if (needsRepaint && View.isDrawingOK()) {
                //                        WindowUtil.globalDisplay.syncExec(
                //                            new Runnable() {
                //                                public void run() {
                repaint();
            //                                 }
            //                            }
            //                        );
            }
        //                }
        //            }.start();
        }
    }
}

Example 2 with GC

use of org.eclipse.swt.graphics.GC in project dbeaver by serge-rider.

the class DBeaverIcons method getViewMenuImage.

public static synchronized Image getViewMenuImage() {
    if (viewMenuImage == null) {
        Display d = Display.getCurrent();
        Image viewMenu = new Image(d, 16, 16);
        Image viewMenuMask = new Image(d, 16, 16);
        Display display = Display.getCurrent();
        GC gc = new GC(viewMenu);
        GC maskgc = new GC(viewMenuMask);
        gc.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));
        gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND));
        int[] shapeArray = new int[] { 6, 3, 15, 3, 11, 7, 10, 7 };
        gc.fillPolygon(shapeArray);
        gc.drawPolygon(shapeArray);
        Color black = display.getSystemColor(SWT.COLOR_BLACK);
        Color white = display.getSystemColor(SWT.COLOR_WHITE);
        maskgc.setBackground(black);
        maskgc.fillRectangle(0, 0, 16, 16);
        maskgc.setBackground(white);
        maskgc.setForeground(white);
        maskgc.fillPolygon(shapeArray);
        maskgc.drawPolygon(shapeArray);
        gc.dispose();
        maskgc.dispose();
        ImageData data = viewMenu.getImageData();
        data.transparentPixel = data.getPixel(0, 0);
        viewMenuImage = new Image(d, viewMenu.getImageData(), viewMenuMask.getImageData());
        viewMenu.dispose();
        viewMenuMask.dispose();
    }
    return viewMenuImage;
}

Example 3 with GC

use of org.eclipse.swt.graphics.GC in project dbeaver by serge-rider.

the class HexStatusLine method initialize.

private void initialize(boolean withSeparator) {
    GridLayout statusLayout = new GridLayout();
    statusLayout.numColumns = withSeparator ? 6 : 5;
    statusLayout.marginHeight = 0;
    setLayout(statusLayout);
    if (withSeparator) {
        GridData separator1GridData = new GridData();
        separator1GridData.grabExcessVerticalSpace = true;
        separator1GridData.verticalAlignment = SWT.FILL;
        Label separator1 = new Label(this, SWT.SEPARATOR);
        separator1.setLayoutData(separator1GridData);
    }
    GC gc = new GC(this);
    FontMetrics fontMetrics = gc.getFontMetrics();
    position = new Label(this, SWT.SHADOW_NONE);
    GridData gridData1 = new GridData(/*SWT.DEFAULT*/
    (11 + 10 + 12 + 3 + 10 + 12) * fontMetrics.getAverageCharWidth(), SWT.DEFAULT);
    position.setLayoutData(gridData1);
    GridData separator23GridData = new GridData();
    separator23GridData.grabExcessVerticalSpace = true;
    separator23GridData.verticalAlignment = SWT.FILL;
    Label separator2 = new Label(this, SWT.SEPARATOR);
    separator2.setLayoutData(separator23GridData);
    value = new Label(this, SWT.SHADOW_NONE);
    GridData gridData2 = new GridData(/*SWT.DEFAULT*/
    (7 + 3 + 9 + 2 + 9 + 8 + 6) * fontMetrics.getAverageCharWidth(), SWT.DEFAULT);
    value.setLayoutData(gridData2);
    // From Eclipse 3.1's GridData javadoc:
    // NOTE: Do not reuse GridData objects. Every control in a Composite that is managed by a
    // GridLayout must have a unique GridData
    GridData separator3GridData = new GridData();
    separator3GridData.grabExcessVerticalSpace = true;
    separator3GridData.verticalAlignment = SWT.FILL;
    Label separator3 = new Label(this, SWT.SEPARATOR);
    separator3.setLayoutData(separator3GridData);
    insertMode = new Label(this, SWT.SHADOW_NONE);
    GridData gridData3 = new GridData(/*SWT.DEFAULT*/
    (TEXT_OVERWRITE.length() + 2) * fontMetrics.getAverageCharWidth(), SWT.DEFAULT);
    insertMode.setLayoutData(gridData3);
    gc.dispose();
}

Example 4 with GC

use of org.eclipse.swt.graphics.GC in project dbeaver by serge-rider.

the class ImageViewCanvas method paint.

/* Paint function */
private void paint(GC gc) {
    Rectangle clientRect = getClientArea();
    /* Canvas' painting area */
    if (sourceImage != null) {
        Rectangle imageRect = ImageViewUtil.inverseTransformRect(transform, clientRect);
        int gap = 2;
        /* find a better start point to render */
        imageRect.x -= gap;
        imageRect.y -= gap;
        imageRect.width += 2 * gap;
        imageRect.height += 2 * gap;
        Rectangle imageBound = sourceImage.getBounds();
        imageRect = imageRect.intersection(imageBound);
        Rectangle destRect = ImageViewUtil.transformRect(transform, imageRect);
        if (screenImage != null)
            screenImage.dispose();
        screenImage = new Image(getDisplay(), clientRect.width, clientRect.height);
        GC newGC = new GC(screenImage);
        newGC.setClipping(clientRect);
        newGC.drawImage(sourceImage, imageRect.x, imageRect.y, imageRect.width, imageRect.height, destRect.x, destRect.y, destRect.width, destRect.height);
        newGC.dispose();
        gc.drawImage(screenImage, 0, 0);
    } else {
        gc.setClipping(clientRect);
        gc.fillRectangle(clientRect);
        initScrollBars();
    }
}

Example 5 with GC

use of org.eclipse.swt.graphics.GC in project translationstudio8 by heartsome.

the class TBSearchCellRenderer method getTextBounds.

/**
	 * {@inheritDoc}
	 */
public Rectangle getTextBounds(GridItem item, boolean preferred) {
    int x = leftMargin;
    if (isTree()) {
        x += getToggleIndent(item);
        x += toggleRenderer.getBounds().width + insideMargin;
    }
    if (isCheck()) {
        x += checkRenderer.getBounds().width + insideMargin;
    }
    Image image = item.getImage(getColumn());
    if (image != null) {
        x += image.getBounds().width + insideMargin;
    }
    Rectangle bounds = new Rectangle(x, topMargin + textTopMargin, 0, 0);
    GC gc = new GC(item.getParent());
    gc.setFont(item.getFont(getColumn()));
    Point size = gc.stringExtent(item.getText(getColumn()));
    bounds.height = size.y;
    if (preferred) {
        bounds.width = size.x - 1;
    } else {
        bounds.width = getBounds().width - x - rightMargin;
    }
    gc.dispose();
    return bounds;
}