refineryutilities.java

水晶 ? ? 报表 ? ? ? 源码

/* =======================================================
 * JCommon : a free general purpose class library for Java
 * =======================================================
 *
 * Project Info:  http://www.jfree.org/jcommon/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * ----------------------
 * RefineryUtilities.java
 * ----------------------
 * (C) Copyright 2000-2003, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Jon Iles;
 *
 * $Id: RefineryUtilities.java,v 1.9 2003/06/27 09:32:27 mungady Exp $
 *
 * Changes (from 26-Oct-2001)
 * --------------------------
 * 26-Oct-2001 : Changed package to com.jrefinery.ui.*;
 * 26-Nov-2001 : Changed name to SwingRefinery.java to make it obvious that this is not part of
 *               the Java APIs (DG);
 * 10-Dec-2001 : Changed name (again) to JRefineryUtilities.java (DG);
 * 28-Feb-2002 : Moved system properties classes into com.jrefinery.ui.about (DG);
 * 19-Apr-2002 : Renamed JRefineryUtilities-->RefineryUtilities.  Added drawRotatedString(...)
 *               method (DG);
 * 21-May-2002 : Changed frame positioning methods to accept Window parameters, as suggested by
 *               Laurence Vanhelsuwe (DG);
 * 27-May-2002 : Added getPointInRectangle method (DG);
 * 26-Jun-2002 : Removed unnecessary imports (DG);
 * 12-Jul-2002 : Added workaround for rotated text (JI);
 * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 08-May-2003 : Added a new drawRotatedString(...) method (DG);
 * 09-May-2003 : Added a drawRotatedShape(...) method (DG);
 * 10-Jun-2003 : Updated aligned and rotated string methods (DG);
 *
 */

package org.jfree.ui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.font.FontRenderContext;
import java.awt.font.LineMetrics;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;

/**
 * A collection of utility methods relating to user interfaces.
 *
 * @author David Gilbert
 */
public class RefineryUtilities {

    /** A flag that controls whether or not the rotated string workaround is used. */
    private static boolean useDrawRotatedStringWorkaround = true;

    /**
     * Sets the flag that controls whether or not the rotated string workaround is used.
     *
     * @param use  the new flag value.
     */
    public static void setUseDrawRotatedStringWorkaround(boolean use) {
        useDrawRotatedStringWorkaround = use;
    }

    /**
     * Positions the specified frame in the middle of the screen.
     *
     * @param frame  the frame to be centered on the screen.
     */
    public static void centerFrameOnScreen(Window frame) {
        positionFrameOnScreen(frame, 0.5, 0.5);
    }

    /**
     * Positions the specified frame at a relative position in the screen, where 50% is considered
     * to be the center of the screen.
     *
     * @param frame  the frame.
     * @param horizontalPercent  the relative horizontal position of the frame (0.0 to 1.0,
     *                           where 0.5 is the center of the screen).
     * @param verticalPercent  the relative vertical position of the frame (0.0 to 1.0, where
     *                         0.5 is the center of the screen).
     */
    public static void positionFrameOnScreen(Window frame,
                                             double horizontalPercent,
                                             double verticalPercent) {

        Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension f = frame.getSize();
        int w = Math.max(s.width - f.width, 0);
        int h = Math.max(s.height - f.height, 0);
        int x = (int) (horizontalPercent * w);
        int y = (int) (verticalPercent * h);
        frame.setBounds(x, y, f.width, f.height);

    }

    /**
     * Positions the specified frame at a random location on the screen while ensuring that the
     * entire frame is visible (provided that the frame is smaller than the screen).
     *
     * @param frame  the frame.
     */
    public static void positionFrameRandomly(Window frame) {

        positionFrameOnScreen(frame, Math.random(), Math.random());

    }

    /**
     * Positions the specified dialog within its parent.
     *
     * @param dialog  the dialog to be positioned on the screen.
     */
    public static void centerDialogInParent(Dialog dialog) {
        positionDialogRelativeToParent(dialog, 0.5, 0.5);
    }

    /**
     * Positions the specified dialog at a position relative to its parent.
     *
     * @param dialog  the dialog to be positioned.
     * @param horizontalPercent  the relative location.
     * @param verticalPercent  the relative location.
     */
    public static void positionDialogRelativeToParent(Dialog dialog, double horizontalPercent,
                                                      double verticalPercent) {
        Dimension d = dialog.getSize();
        Container parent = dialog.getParent();
        Dimension p = parent.getSize();

        int baseX = parent.getX() - d.width;
        int baseY = parent.getY() - d.height;
        int w = d.width + p.width;
        int h = d.height + p.height;
        int x = baseX + (int) (horizontalPercent * w);
        int y = baseY + (int) (verticalPercent * h);

        // make sure the dialog fits completely on the screen...
        Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
        x = Math.min(x, (s.width - d.width));
        x = Math.max(x, 0);
        y = Math.min(y, (s.height - d.height));
        y = Math.max(y, 0);

        dialog.setBounds(x, y, d.width, d.height);

    }

    /**
     * Creates a panel that contains a table based on the specified table model.
     *
     * @param model  the table model to use when constructing the table.
     *
     * @return the panel.
     */
    public static JPanel createTablePanel(TableModel model) {

        JPanel panel = new JPanel(new BorderLayout());
        JTable table = new JTable(model);
        for (int columnIndex = 0; columnIndex < model.getColumnCount(); columnIndex++) {
            TableColumn column = table.getColumnModel().getColumn(columnIndex);
            Class c = model.getColumnClass(columnIndex);
            if (c.equals(Number.class)) {
                column.setCellRenderer(new NumberCellRenderer());
            }
        }
        panel.add(new JScrollPane(table));
        return panel;

    }

    /**
     * Creates a label with a specific font.
     *
     * @param text  the text for the label.
     * @param font  the font.
     *
     * @return the label.
     */
    public static JLabel createJLabel(String text, Font font) {

        JLabel result = new JLabel(text);
        result.setFont(font);
        return result;

    }

    /**
     * Creates a label with a specific font and color.
     *
     * @param text  the text for the label.
     * @param font  the font.
     * @param color  the color.
     *
     * @return the label.
     */
    public static JLabel createJLabel(String text, Font font, Color color) {

        JLabel result = new JLabel(text);
        result.setFont(font);
        result.setForeground(color);
        return result;

    }

    /**
     * Creates a {@link JButton}.
     *
     * @param label  the label.
     * @param font  the font.
     *
     * @return the button.
     */
    public static JButton createJButton(String label, Font font) {

        JButton result = new JButton(label);
        result.setFont(font);
        return result;

    }

    /**
     * Draws a string that is aligned by an anchor point.
     *
     * @param text  the text.
     * @param g2  the graphics device.
     * @param x  the x coordinate (Java 2D).
     * @param y  the y coordinate (Java 2D).
     * @param anchor  the anchor location.
     */
    public static void drawAlignedString(String text, Graphics2D g2, float x, float y,
                                         TextAnchor anchor) {

        float[] adjust = deriveTextBoundsAnchorOffsets(g2, text, anchor);
        g2.drawString(text, (int) (x + adjust[0]), (int) (y + adjust[1]));

    }

    /**
     * Draws a string that is aligned by one anchor point and rotated about another anchor point.
     *
     * @param text  the text.
     * @param g2  the graphics device.
     * @param x  the location of the text anchor.
     * @param y  the location of the text anchor.
     * @param textAnchor  the text anchor.
     * @param rotationAnchor  the rotation anchor.
     * @param angle  the rotation angle.
     */
    public static void drawRotatedString(String text, Graphics2D g2, float x, float y,
                                         TextAnchor textAnchor,
                                         TextAnchor rotationAnchor,
                                         double angle) {

        if (text == null || text.equals("")) {
            return;
        }
        float[] textAdj = deriveTextBoundsAnchorOffsets(g2, text, textAnchor);