org.eclipse.jface.snippets.viewers.TableCursor.java Source code

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Here is the source code for org.eclipse.jface.snippets.viewers.TableCursor.java

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/*******************************************************************************
 * Copyright (c) 2005, 2014 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Lars Vogel (lars.vogel@gmail.com) - Bug 413427
 *******************************************************************************/
package org.eclipse.jface.snippets.viewers;

import org.eclipse.jface.util.Util;
import org.eclipse.jface.viewers.AbstractTableViewer;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Table;

public class TableCursor extends AbstractCellCursor {

    public TableCursor(AbstractTableViewer viewer) {
        super(viewer, SWT.NONE);
    }

    @Override
    protected void paint(Event event) {
        if (getSelectedCells().length == 1 && getSelectedCells()[0] == null)
            return;
        ViewerCell cell = getSelectedCells()[0];

        GC gc = event.gc;
        Display display = getDisplay();
        gc.setBackground(getBackground());
        gc.setForeground(getForeground());
        gc.fillRectangle(event.x, event.y, event.width, event.height);
        int x = 0;
        Point size = getSize();
        Image image = cell.getImage();
        if (image != null) {
            Rectangle imageSize = image.getBounds();
            int imageY = (size.y - imageSize.height) / 2;
            gc.drawImage(image, x, imageY);
            x += imageSize.width;
        }
        String text = cell.getText();
        if (text != "") { //$NON-NLS-1$
            Rectangle bounds = cell.getBounds();
            Point extent = gc.stringExtent(text);
            // Temporary code - need a better way to determine table trim
            if (Util.isWin32()) {
                if (((Table) getParent()).getColumnCount() == 0 || cell.getColumnIndex() == 0) {
                    x += 2;
                } else {
                    int alignmnent = ((Table) getParent()).getColumn(cell.getColumnIndex()).getAlignment();
                    switch (alignmnent) {
                    case SWT.LEFT:
                        x += 6;
                        break;
                    case SWT.RIGHT:
                        x = bounds.width - extent.x - 6;
                        break;
                    case SWT.CENTER:
                        x += (bounds.width - x - extent.x) / 2;
                        break;
                    }
                }
            } else {
                if (((Table) getParent()).getColumnCount() == 0) {
                    x += 5;
                } else {
                    int alignmnent = ((Table) getParent()).getColumn(cell.getColumnIndex()).getAlignment();
                    switch (alignmnent) {
                    case SWT.LEFT:
                        x += 5;
                        break;
                    case SWT.RIGHT:
                        x = bounds.width - extent.x - 2;
                        break;
                    case SWT.CENTER:
                        x += (bounds.width - x - extent.x) / 2 + 2;
                        break;
                    }
                }
            }
            int textY = (size.y - extent.y) / 2;
            gc.drawString(text, x, textY);
        }
        if (isFocusControl()) {
            gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
            gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
            gc.drawFocus(0, 0, size.x, size.y);
        }
    }
}