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Lines 27-32
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import org.eclipse.swt.events.DisposeListener; |
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import org.eclipse.swt.events.DisposeListener; |
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import org.eclipse.swt.events.PaintEvent; |
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import org.eclipse.swt.events.PaintEvent; |
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import org.eclipse.swt.events.PaintListener; |
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import org.eclipse.swt.events.PaintListener; |
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import org.eclipse.swt.graphics.GC; |
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import org.eclipse.swt.graphics.Image; |
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import org.eclipse.swt.graphics.Image; |
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import org.eclipse.swt.graphics.Rectangle; |
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import org.eclipse.swt.graphics.Rectangle; |
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import org.eclipse.swt.layout.GridData; |
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import org.eclipse.swt.layout.GridData; |
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Lines 54-59
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private static HashMap<String, String> imageTypes; |
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private static HashMap<String, String> imageTypes; |
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private ScrolledComposite scrolledComposite; |
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static { |
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static { |
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textTypes = new HashMap<String, String>(); |
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textTypes = new HashMap<String, String>(); |
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imageTypes = new HashMap<String, String>(); |
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imageTypes = new HashMap<String, String>(); |
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Lines 129-158
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} |
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} |
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private void createImagePreview(Composite composite, LocalAttachment attachment) { |
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private void createImagePreview(Composite composite, LocalAttachment attachment) { |
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final Image image = new Image(composite.getDisplay(), attachment.getFilePath()); |
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// Uses double buffering to paint the image; there was a weird behavior |
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final ScrolledComposite scrolledComposite = new ScrolledComposite(composite, SWT.H_SCROLL | SWT.V_SCROLL |
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// with transparent images and flicker with large images |
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| SWT.BORDER); |
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Image originalImage = new Image(composite.getDisplay(), attachment.getFilePath()); |
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final Image bufferedImage = new Image(composite.getDisplay(), originalImage.getBounds()); |
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GC gc = new GC(bufferedImage); |
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gc.setBackground(composite.getBackground()); |
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gc.fillRectangle(originalImage.getBounds()); |
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gc.drawImage(originalImage, 0, 0); |
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gc.dispose(); |
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originalImage.dispose(); |
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scrolledComposite = new ScrolledComposite(composite, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER); |
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scrolledComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); |
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scrolledComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); |
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scrolledComposite.setExpandHorizontal(true); |
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scrolledComposite.setExpandHorizontal(true); |
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scrolledComposite.setExpandVertical(true); |
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scrolledComposite.setExpandVertical(true); |
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Composite canvasComposite = new Composite(scrolledComposite, SWT.NONE); |
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Composite canvasComposite = new Composite(scrolledComposite, SWT.NONE); |
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canvasComposite.setLayout(GridLayoutFactory.fillDefaults().create()); |
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canvasComposite.setLayout(GridLayoutFactory.fillDefaults().create()); |
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Canvas canvas = new Canvas(canvasComposite, SWT.NONE); |
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Canvas canvas = new Canvas(canvasComposite, SWT.NO_BACKGROUND); |
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final Rectangle imgSize = image.getBounds(); |
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final Rectangle imgSize = bufferedImage.getBounds(); |
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canvas.setLayoutData(GridDataFactory.fillDefaults().align(SWT.CENTER, SWT.CENTER).grab(true, true).hint( |
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canvas.setLayoutData(GridDataFactory.fillDefaults().align(SWT.CENTER, SWT.CENTER).grab(true, true).hint( |
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imgSize.width, imgSize.height).create()); |
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imgSize.width, imgSize.height).create()); |
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canvas.addPaintListener(new PaintListener() { |
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canvas.addPaintListener(new PaintListener() { |
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public void paintControl(PaintEvent e) { |
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public void paintControl(PaintEvent e) { |
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e.gc.drawImage(image, 0, 0); |
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e.gc.drawImage(bufferedImage, 0, 0); |
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} |
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} |
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}); |
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}); |
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canvas.addDisposeListener(new DisposeListener() { |
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canvas.addDisposeListener(new DisposeListener() { |
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public void widgetDisposed(DisposeEvent e) { |
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public void widgetDisposed(DisposeEvent e) { |
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image.dispose(); |
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bufferedImage.dispose(); |
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} |
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} |
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}); |
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}); |
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Lines 163-184
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@Override |
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@Override |
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public void controlResized(ControlEvent e) { |
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public void controlResized(ControlEvent e) { |
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Rectangle clientArea = scrolledComposite.getClientArea(); |
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adjustScrollbars(imgSize); |
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ScrollBar hBar = scrolledComposite.getHorizontalBar(); |
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hBar.setMinimum(1); |
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hBar.setMaximum(clientArea.width - imgSize.width); |
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hBar.setPageIncrement(hBar.getThumb()); |
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hBar.setIncrement(10); |
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ScrollBar vBar = scrolledComposite.getVerticalBar(); |
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vBar.setMinimum(0); |
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vBar.setMaximum(clientArea.height - imgSize.height); |
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vBar.setPageIncrement(vBar.getThumb()); |
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vBar.setIncrement(10); |
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} |
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} |
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}); |
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}); |
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adjustScrollbars(imgSize); |
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} |
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private void adjustScrollbars(Rectangle imgSize) { |
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Rectangle clientArea = scrolledComposite.getClientArea(); |
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ScrollBar hBar = scrolledComposite.getHorizontalBar(); |
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hBar.setMinimum(0); |
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hBar.setMaximum(imgSize.width - 1); |
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hBar.setPageIncrement(clientArea.width); |
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hBar.setIncrement(10); |
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ScrollBar vBar = scrolledComposite.getVerticalBar(); |
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vBar.setMinimum(0); |
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vBar.setMaximum(imgSize.height - 1); |
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vBar.setPageIncrement(clientArea.height); |
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vBar.setIncrement(10); |
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} |
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} |
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private void createGenericPreview(Composite composite, LocalAttachment attachment) { |
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private void createGenericPreview(Composite composite, LocalAttachment attachment) { |
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Lines 193-196
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label.setLayoutData(new GridData(GridData.FILL_BOTH)); |
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label.setLayoutData(new GridData(GridData.FILL_BOTH)); |
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label.setText(message); |
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label.setText(message); |
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} |
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} |
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} |
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} |
