Java Code Examples for org.eclipse.swt.graphics.TextLayout#dispose()

protected void drawBlankString( Graphics g, String s )
{
	TextLayout tl = new TextLayout( Display.getCurrent( ) );

	// bidi_hcg: Apply text direction
	tl.setOrientation( this.rtl ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT );
	
	tl.setText( s );
	Rectangle rc = tl.getBounds( );

	int left = ( getClientArea( ).width - rc.width ) / 2;
	int top = ( getClientArea( ).height - rc.height ) / 2;

	g.drawText( s, getClientArea( ).x + left, getClientArea( ).y + top );
	tl.dispose();
}
 

public int getPreferredHeight(LayerCell cell, GC gc, IConfigRegistry configRegistry) {
	if (innerTagFactory == null) {
		innerTagFactory = new XliffInnerTagFactory(placeHolderBuilder);
	}
	innerTagFactory.reset();
	TextLayout layout = getCellTextLayout(cell);

	int counts = layout.getLineCount();
	int contentHeight = 0;
	for (int i = 0; i < counts; i++) {
		contentHeight += layout.getLineBounds(i).height;
	}
	layout.dispose();
	contentHeight += Math.max(counts - 1, 0) * SEGMENT_LINE_SPACING;
	contentHeight += 4;// 加上编辑模式下，StyledTextCellEditor的边框
	contentHeight += topPadding;
	contentHeight += bottomPadding;
	return contentHeight;
}
 

/**
 * Shorten text
 *
 * @param gc
 * @param t
 * @param width
 * @return
 */
protected String shortenText(GC gc, String t, int width) {
    if (t == null) return null;
    int w = gc.textExtent(ELLIPSIS, DRAW_FLAGS).x;
    if (width <= w) return t;
    int l = t.length();
    int max = l / 2;
    int min = 0;
    int mid = (max + min) / 2 - 1;
    if (mid <= 0) return t;
    TextLayout layout = new TextLayout(getDisplay());
    layout.setText(t);
    mid = validateOffset(layout, mid);
    while (min < mid && mid < max) {
        String s1 = t.substring(0, mid);
        String s2 = t.substring(validateOffset(layout, l - mid), l);
        int l1 = gc.textExtent(s1, DRAW_FLAGS).x;
        int l2 = gc.textExtent(s2, DRAW_FLAGS).x;
        if (l1 + w + l2 > width) {
            max = mid;
            mid = validateOffset(layout, (max + min) / 2);
        } else if (l1 + w + l2 < width) {
            min = mid;
            mid = validateOffset(layout, (max + min) / 2);
        } else {
            min = max;
        }
    }
    String result = mid == 0 ? t : t.substring(0, mid) + ELLIPSIS + t.substring(validateOffset(layout, l - mid), l);
    layout.dispose();
    return result;
}
 

/**
 * 设置字体
 * @param font
 *            ;
 */
public void setFont(Font font) {
	TextLayout layout = new TextLayout(Display.getDefault());
	layout.setFont(font);
	StringBuffer tabBuffer = new StringBuffer(tabSize);
	for (int i = 0; i < tabSize; i++) {
		tabBuffer.append(' ');
	}
	layout.setText(tabBuffer.toString());
	tabWidth = layout.getBounds().width;
	layout.dispose();
	this.font = font;
}
 

@Override
public int getPreferredHeight(LayerCell cell, GC gc, IConfigRegistry configRegistry) {
	TextLayout layout = getCellTextLayout(cell);
	int contentHeight = layout.getBounds().height;
	layout.dispose();
	tuv = null;
	contentHeight += topPadding;
	contentHeight += bottomPadding;
	contentHeight += 4;// 加上编辑模式下，StyledTextCellEditor的边框
	return contentHeight;
}
 

@Override
public void paintCell(LayerCell cell, GC gc, Rectangle bounds, IConfigRegistry configRegistry) {
	super.paintCell(cell, gc, bounds, configRegistry);
	IStyle cellStyle = CellStyleUtil.getCellStyle(cell, configRegistry);
	setupGCFromConfig(gc, cellStyle);

	TextLayout layout = getCellTextLayout(cell);
	Rectangle rectangle = cell.getBounds();
	layout.draw(gc, rectangle.x + leftPadding, rectangle.y + topPadding);
	layout.dispose();
}
 

/**
     * {@inheritDoc}
     */
    public Point computeSize(GC gc, int wHint, int hHint, Object value)
    {
        GridItem item = (GridItem)value;

        gc.setFont(item.getFont(getColumn()));

        int x = 0;

        x += leftMargin;

        if (isTree())
        {
            x += getToggleIndent(item);

            x += toggleRenderer.getBounds().width + insideMargin;

        }

        if (isCheck())
        {
            x += checkRenderer.getBounds().width + insideMargin;
        }

        int y = 0;

        Image image = item.getImage(getColumn());
        if (image != null)
        {
            y = topMargin + image.getBounds().height + bottomMargin;

            x += image.getBounds().width + insideMargin;
        }

// MOPR-DND
// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
//
//       x += gc.stringExtent(item.getText(column)).x + rightMargin;
//
//        y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
//
// with this code:

        int textHeight = 0;
        if(!isWordWrap())
        {
            x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

            textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
        }
        else
        {
        	int plainTextWidth;
        	if (wHint == SWT.DEFAULT)
        	  plainTextWidth = getBounds().width - x - rightMargin;
        	else
        		plainTextWidth = wHint - x - rightMargin;

            TextLayout currTextLayout = new TextLayout(gc.getDevice());
            currTextLayout.setFont(gc.getFont());
            currTextLayout.setText(item.getText(getColumn()));
            currTextLayout.setAlignment(getAlignment());
            currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

            x += plainTextWidth + rightMargin;

            textHeight += topMargin + textTopMargin;
            for(int cnt=0;cnt<currTextLayout.getLineCount();cnt++)
                textHeight += currTextLayout.getLineBounds(cnt).height;
            textHeight += textBottomMargin + bottomMargin;

            currTextLayout.dispose();
        }

        y = Math.max(y, textHeight);

        return new Point(x, y);
    }
 

void handleVerticalScroll(Event event) {
	GridVisibleRange visibleR = gridTable.getVisibleRange();
	GridItem[] items = visibleR.getItems();
	boolean itemFlg = false;
	for (GridItem item : items) {
		if (focusItem == item) {
			itemFlg = true;
		}
	}
	boolean columnFlg = false;
	GridColumn[] columns = visibleR.getColumns();
	if (columns.length - 1 >= focusColIndex) {
		columnFlg = true;
	}
	if (!itemFlg || !columnFlg) {
		defaultCaret.setVisible(false);
		return;
	}
	defaultCaret.setVisible(true);

	GridColumn col = gridTable.getColumn(focusColIndex);
	GridCellRenderer gcr = col.getCellRenderer();
	int colIndex = gcr.getColumn();
	if (gcr == null || !(gcr instanceof XGridCellRenderer) || !copyAbleColumnIndexs.contains(colIndex)) {
		return;
	}
	XGridCellRenderer cellRender = (XGridCellRenderer) gcr;

	Rectangle cellBounds = focusItem.getBounds(colIndex);
	GC gc = new GC(Display.getDefault());
	TextLayout layout = null;
	try {
		layout = cellRender.getTextLayout(gc, focusItem, colIndex, true, false);
		if (layout == null) {
			gc.dispose();
			return;
		}
		Point point = layout.getLocation(caretOffset, false);
		coordinateOffsetX = cellBounds.x + cellRender.leftMargin;
		coordinateOffsetY = cellBounds.y + cellRender.topMargin + cellRender.textTopMargin;
		defaultCaret.setLocation(point.x + coordinateOffsetX, point.y + coordinateOffsetY);
	} finally {
		if (layout != null) {
			layout.dispose();
		}
		if (gc != null) {
			gc.dispose();
		}
	}
}
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;

		x += image.getBounds().width + 3;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;

		x += image.getBounds().width + 3;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	if (isTree()) {
		x += getToggleIndent(item);

		x += toggleRenderer.getBounds().width + insideMargin;

	}

	if (isCheck()) {
		x += checkRenderer.getBounds().width + insideMargin;
	}

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;

		x += image.getBounds().width + insideMargin;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells
	// in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() +
	// bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

/**
     * {@inheritDoc}
     */
    public Point computeSize(GC gc, int wHint, int hHint, Object value)
    {
        GridItem item = (GridItem)value;

        gc.setFont(item.getFont(getColumn()));

        int x = 0;

        x += leftMargin;

        if (isTree())
        {
            x += getToggleIndent(item);

            x += toggleRenderer.getBounds().width + insideMargin;

        }

        if (isCheck())
        {
            x += checkRenderer.getBounds().width + insideMargin;
        }

        int y = 0;

        Image image = item.getImage(getColumn());
        if (image != null)
        {
            y = topMargin + image.getBounds().height + bottomMargin;

            x += image.getBounds().width + insideMargin;
        }

// MOPR-DND
// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
//
//       x += gc.stringExtent(item.getText(column)).x + rightMargin;
//
//        y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
//
// with this code:

        int textHeight = 0;
        if(!isWordWrap())
        {
            x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

            textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
        }
        else
        {
        	int plainTextWidth;
        	if (wHint == SWT.DEFAULT)
        	  plainTextWidth = getBounds().width - x - rightMargin;
        	else
        		plainTextWidth = wHint - x - rightMargin;

            TextLayout currTextLayout = new TextLayout(gc.getDevice());
            currTextLayout.setFont(gc.getFont());
            currTextLayout.setText(item.getText(getColumn()));
            currTextLayout.setAlignment(getAlignment());
            currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

            x += plainTextWidth + rightMargin;

            textHeight += topMargin + textTopMargin;
            for(int cnt=0;cnt<currTextLayout.getLineCount();cnt++)
                textHeight += currTextLayout.getLineBounds(cnt).height;
            textHeight += textBottomMargin + bottomMargin;

            currTextLayout.dispose();
        }

        y = Math.max(y, textHeight);

        return new Point(x, y);
    }
 

/**
     * {@inheritDoc}
     */
    @Override
	public Point computeSize(GC gc, int wHint, int hHint, Object value)
    {
        GridItem item = (GridItem)value;

        gc.setFont(item.getFont(getColumn()));

        int x = 0;

        x += leftMargin;

        if (isTree())
        {
            x += getToggleIndent(item);

            x += toggleRenderer.getBounds().width + insideMargin;

        }

        if (isCheck())
        {
            x += checkRenderer.getBounds().width + insideMargin;
        }

        int y = 0;

        Image image = item.getImage(getColumn());
        if (image != null)
        {
            y = topMargin + image.getBounds().height + bottomMargin;

            x += image.getBounds().width + insideMargin;
        }

// MOPR-DND
// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
//
//       x += gc.stringExtent(item.getText(column)).x + rightMargin;
//
//        y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
//
// with this code:

        int textHeight = 0;
        if(!isWordWrap())
        {
            x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

            textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
        }
        else
        {
        	int plainTextWidth;
        	if (wHint == SWT.DEFAULT)
        		plainTextWidth = gc.textExtent(item.getText(getColumn())).x;
        	else
        		plainTextWidth = wHint - x - rightMargin;

            TextLayout currTextLayout = new TextLayout(gc.getDevice());
            currTextLayout.setFont(gc.getFont());
            currTextLayout.setText(item.getText(getColumn()));
            currTextLayout.setAlignment(getAlignment());
            currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

            x += plainTextWidth + rightMargin;

            textHeight += topMargin + textTopMargin;
            for(int cnt=0;cnt<currTextLayout.getLineCount();cnt++)
                textHeight += currTextLayout.getLineBounds(cnt).height;
            textHeight += textBottomMargin + bottomMargin;

            currTextLayout.dispose();
        }

        y = Math.max(y, textHeight);

        return new Point(x, y);
    }
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	if (isTree()) {
		x += getToggleIndent(item);

		x += toggleRenderer.getBounds().width + insideMargin;

	}

	if (isCheck()) {
		x += checkRenderer.getBounds().width + insideMargin;
	}

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;

		x += image.getBounds().width + insideMargin;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

void handleVerticalScroll(Event event) {
	GridVisibleRange visibleR = gridTable.getVisibleRange();
	GridItem[] items = visibleR.getItems();
	boolean itemFlg = false;
	for (GridItem item : items) {
		if (focusItem == item) {
			itemFlg = true;
		}
	}
	boolean columnFlg = false;
	GridColumn[] columns = visibleR.getColumns();
	if (columns.length - 1 >= focusColIndex) {
		columnFlg = true;
	}
	if (!itemFlg || !columnFlg) {
		defaultCaret.setVisible(false);
		return;
	}
	defaultCaret.setVisible(true);

	GridColumn col = gridTable.getColumn(focusColIndex);
	GridCellRenderer gcr = col.getCellRenderer();
	int colIndex = gcr.getColumn();
	if (gcr == null || !(gcr instanceof XGridCellRenderer) || !copyAbleColumnIndexs.contains(colIndex)) {
		return;
	}
	XGridCellRenderer cellRender = (XGridCellRenderer) gcr;

	Rectangle cellBounds = focusItem.getBounds(colIndex);
	GC gc = new GC(Display.getDefault());
	TextLayout layout = null;
	try {
		layout = cellRender.getTextLayout(gc, focusItem, colIndex, true, false);
		if (layout == null) {
			gc.dispose();
			return;
		}
		Point point = layout.getLocation(caretOffset, false);
		coordinateOffsetX = cellBounds.x + cellRender.leftMargin;
		coordinateOffsetY = cellBounds.y + cellRender.topMargin + cellRender.textTopMargin;
		defaultCaret.setLocation(point.x + coordinateOffsetX, point.y + coordinateOffsetY);
	} finally {
		if (layout != null) {
			layout.dispose();
		}
		if (gc != null) {
			gc.dispose();
		}
	}
}
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

/**
 * {@inheritDoc}
 */
public Point computeSize(GC gc, int wHint, int hHint, Object value) {
	GridItem item = (GridItem) value;

	gc.setFont(item.getFont(getColumn()));

	int x = 0;

	x += leftMargin;

	int y = 0;

	Image image = item.getImage(getColumn());
	if (image != null) {
		y = topMargin + image.getBounds().height + bottomMargin;

		x += image.getBounds().width + 3;
	}

	// MOPR-DND
	// MOPR: replaced this code (to get correct preferred height for cells in word-wrap columns)
	//
	// x += gc.stringExtent(item.getText(column)).x + rightMargin;
	//
	// y = Math.max(y,topMargin + gc.getFontMetrics().getHeight() + bottomMargin);
	//
	// with this code:

	int textHeight = 0;
	if (!isWordWrap()) {
		x += gc.textExtent(item.getText(getColumn())).x + rightMargin;

		textHeight = topMargin + textTopMargin + gc.getFontMetrics().getHeight() + textBottomMargin + bottomMargin;
	} else {
		int plainTextWidth;
		if (wHint == SWT.DEFAULT)
			plainTextWidth = getBounds().width - x - rightMargin;
		else
			plainTextWidth = wHint - x - rightMargin;

		TextLayout currTextLayout = new TextLayout(gc.getDevice());
		currTextLayout.setFont(gc.getFont());
		currTextLayout.setText(item.getText(getColumn()));
		currTextLayout.setAlignment(getAlignment());
		currTextLayout.setWidth(plainTextWidth < 1 ? 1 : plainTextWidth);

		x += plainTextWidth + rightMargin;

		textHeight += topMargin + textTopMargin;
		for (int cnt = 0; cnt < currTextLayout.getLineCount(); cnt++)
			textHeight += currTextLayout.getLineBounds(cnt).height;
		textHeight += textBottomMargin + bottomMargin;

		currTextLayout.dispose();
	}

	y = Math.max(y, textHeight);

	return new Point(x, y);
}
 

/**
 * Shorten the given text <code>t</code> so that its length doesn't exceed
 * the given width. The default implementation replaces characters in the
 * center of the original string with an ellipsis ("..."). Override if you
 * need a different strategy.
 * 
 * @param gc
 *            the gc to use for text measurement
 * @param t
 *            the text to shorten
 * @param width
 *            the width to shorten the text to, in pixels
 * @return the shortened text
 */
protected String shortenText( GC gc, String t, int width )
{
	if ( t == null )
		return null;
	int w = gc.textExtent( ELLIPSIS, DRAW_FLAGS ).x;
	if ( width <= w )
		return t;
	int l = t.length( );
	int max = l / 2;
	int min = 0;
	int mid = ( max + min ) / 2 - 1;
	if ( mid <= 0 )
		return t;
	TextLayout layout = new TextLayout( getDisplay( ) );
	layout.setText( t );
	mid = validateOffset( layout, mid );
	while ( min < mid && mid < max )
	{
		String s1 = t.substring( 0, mid );
		String s2 = t.substring( validateOffset( layout, l - mid ), l );
		int l1 = gc.textExtent( s1, DRAW_FLAGS ).x;
		int l2 = gc.textExtent( s2, DRAW_FLAGS ).x;
		if ( l1 + w + l2 > width )
		{
			max = mid;
			mid = validateOffset( layout, ( max + min ) / 2 );
		}
		else if ( l1 + w + l2 < width )
		{
			min = mid;
			mid = validateOffset( layout, ( max + min ) / 2 );
		}
		else
		{
			min = max;
		}
	}
	String result = mid == 0 ? t : t.substring( 0, mid )
			+ ELLIPSIS
			+ t.substring( validateOffset( layout, l - mid ), l );
	layout.dispose( );
	return result;
}
 

@Override
protected Control createMessageArea(Composite parent) {
	initializeDialogUnits(parent);

	Composite messageComposite= new Composite(parent, SWT.NONE);
	messageComposite.setFont(parent.getFont());
	GridLayout layout= new GridLayout();
	layout.numColumns= 1;
	layout.marginHeight= 0;
	layout.marginWidth= 0;
	layout.verticalSpacing= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
	layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
	messageComposite.setLayout(layout);
	messageComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

	Label explain= new Label(messageComposite, SWT.WRAP);
	explain.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
	explain.setText(FixMessages.CleanUpPostSaveListener_SlowCleanUpWarningDialog_explain);

	final BulletListBlock cleanUpListBlock= new BulletListBlock(messageComposite, SWT.NONE);
	GridData gridData= new GridData(SWT.FILL, SWT.FILL, true, true);
	cleanUpListBlock.setLayoutData(gridData);
	cleanUpListBlock.setText(fCleanUpNames);

	TextLayout textLayout= new TextLayout(messageComposite.getDisplay());
	textLayout.setText(fCleanUpNames);
	int lineCount= textLayout.getLineCount();
	if (lineCount < 5)
		gridData.heightHint= textLayout.getLineBounds(0).height * 6;
	textLayout.dispose();

	Link link= new Link(messageComposite, SWT.NONE);
	link.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
	link.setText(FixMessages.CleanUpPostSaveListener_SlowCleanUpDialog_link);

	link.addSelectionListener(new SelectionAdapter() {
		/*
		 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
		 */
		@Override
		public void widgetSelected(SelectionEvent e) {
			PreferencesUtil.createPreferenceDialogOn(getShell(), SaveParticipantPreferencePage.PREFERENCE_PAGE_ID, null, null).open();
		}
	});

	return messageComposite;
}