/* * Copyright (c) 1998, 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.plaf.metal; import javax.swing.plaf.*;import javax.swing.*;import java.awt.*;import java.awt.image.*;import java.lang.ref.*;import java.util.*;import sun.swing.CachedPainter;import sun.swing.ImageIconUIResource; /** * This is a dumping ground for random stuff we want to use in several places. * * @author Steve Wilson */ class MetalUtils {     static void drawFlush3DBorder(Graphics g, Rectangle r) {        drawFlush3DBorder(g, r.x, r.y, r.width, r.height);    }     /**      * This draws the "Flush 3D Border" which is used throughout the Metal L&F      */    static void drawFlush3DBorder(Graphics g, int x, int y, int w, int h) {        g.translate( x, y);        g.setColor( MetalLookAndFeel.getControlDarkShadow() );        g.drawRect( 0, 0, w-2, h-2 );        g.setColor( MetalLookAndFeel.getControlHighlight() );        g.drawRect( 1, 1, w-2, h-2 );        g.setColor( MetalLookAndFeel.getControl() );        g.drawLine( 0, h-1, 1, h-2 );        g.drawLine( w-1, 0, w-2, 1 );        g.translate( -x, -y);    }     /**      * This draws a variant "Flush 3D Border"      * It is used for things like pressed buttons.      */    static void drawPressed3DBorder(Graphics g, Rectangle r) {        drawPressed3DBorder( g, r.x, r.y, r.width, r.height );    }     static void drawDisabledBorder(Graphics g, int x, int y, int w, int h) {        g.translate( x, y);        g.setColor( MetalLookAndFeel.getControlShadow() );        g.drawRect( 0, 0, w-1, h-1 );        g.translate(-x, -y);    }     /**      * This draws a variant "Flush 3D Border"      * It is used for things like pressed buttons.      */    static void drawPressed3DBorder(Graphics g, int x, int y, int w, int h) {        g.translate( x, y);         drawFlush3DBorder(g, 0, 0, w, h);         g.setColor( MetalLookAndFeel.getControlShadow() );        g.drawLine( 1, 1, 1, h-2 );        g.drawLine( 1, 1, w-2, 1 );        g.translate( -x, -y);    }     /**      * This draws a variant "Flush 3D Border"      * It is used for things like active toggle buttons.      * This is used rarely.      */    static void drawDark3DBorder(Graphics g, Rectangle r) {        drawDark3DBorder(g, r.x, r.y, r.width, r.height);    }     /**      * This draws a variant "Flush 3D Border"      * It is used for things like active toggle buttons.      * This is used rarely.      */    static void drawDark3DBorder(Graphics g, int x, int y, int w, int h) {        g.translate( x, y);         drawFlush3DBorder(g, 0, 0, w, h);         g.setColor( MetalLookAndFeel.getControl() );        g.drawLine( 1, 1, 1, h-2 );        g.drawLine( 1, 1, w-2, 1 );        g.setColor( MetalLookAndFeel.getControlShadow() );        g.drawLine( 1, h-2, 1, h-2 );        g.drawLine( w-2, 1, w-2, 1 );        g.translate( -x, -y);    }     static void drawButtonBorder(Graphics g, int x, int y, int w, int h, boolean active) {        if (active) {            drawActiveButtonBorder(g, x, y, w, h);        } else {            drawFlush3DBorder(g, x, y, w, h);        }    }     static void drawActiveButtonBorder(Graphics g, int x, int y, int w, int h) {        drawFlush3DBorder(g, x, y, w, h);        g.setColor( MetalLookAndFeel.getPrimaryControl() );        g.drawLine( x+1, y+1, x+1, h-3 );        g.drawLine( x+1, y+1, w-3, x+1 );        g.setColor( MetalLookAndFeel.getPrimaryControlDarkShadow() );        g.drawLine( x+2, h-2, w-2, h-2 );        g.drawLine( w-2, y+2, w-2, h-2 );    }     static void drawDefaultButtonBorder(Graphics g, int x, int y, int w, int h, boolean active) {        drawButtonBorder(g, x+1, y+1, w-1, h-1, active);        g.translate(x, y);        g.setColor( MetalLookAndFeel.getControlDarkShadow() );        g.drawRect( 0, 0, w-3, h-3 );        g.drawLine( w-2, 0, w-2, 0);        g.drawLine( 0, h-2, 0, h-2);        g.translate(-x, -y);    }     static void drawDefaultButtonPressedBorder(Graphics g, int x, int y, int w, int h) {        drawPressed3DBorder(g, x + 1, y + 1, w - 1, h - 1);        g.translate(x, y);        g.setColor(MetalLookAndFeel.getControlDarkShadow());        g.drawRect(0, 0, w - 3, h - 3);        g.drawLine(w - 2, 0, w - 2, 0);        g.drawLine(0, h - 2, 0, h - 2);        g.setColor(MetalLookAndFeel.getControl());        g.drawLine(w - 1, 0, w - 1, 0);        g.drawLine(0, h - 1, 0, h - 1);        g.translate(-x, -y);    }     /*     * Convenience function for determining ComponentOrientation.  Helps us     * avoid having Munge directives throughout the code.     */    static boolean isLeftToRight( Component c ) {        return c.getComponentOrientation().isLeftToRight();    }     static int getInt(Object key, int defaultValue) {        Object value = UIManager.get(key);         if (value instanceof Integer) {            return ((Integer)value).intValue();        }        if (value instanceof String) {            try {                return Integer.parseInt((String)value);            } catch (NumberFormatException nfe) {}        }        return defaultValue;    }     //    // Ocean specific stuff.    //    /**     * Draws a radial type gradient. The gradient will be drawn vertically if     * <code>vertical</code> is true, otherwise horizontally.     * The UIManager key consists of five values:     * r1 r2 c1 c2 c3. The gradient is broken down into four chunks drawn     * in order from the origin.     * <ol>     * <li>Gradient r1 % of the size from c1 to c2     * <li>Rectangle r2 % of the size in c2.     * <li>Gradient r1 % of the size from c2 to c1     * <li>The remaining size will be filled with a gradient from c1 to c3.     * </ol>     *     * @param c Component rendering to     * @param g Graphics to draw to.     * @param key UIManager key used to look up gradient values.     * @param x X coordinate to draw from     * @param y Y coordinate to draw from     * @param w Width to draw to     * @param h Height to draw to     * @param vertical Direction of the gradient     * @return true if <code>key</code> exists, otherwise false.     */    static boolean drawGradient(Component c, Graphics g, String key,                                int x, int y, int w, int h, boolean vertical) {        java.util.List gradient = (java.util.List)UIManager.get(key);        if (gradient == null || !(g instanceof Graphics2D)) {            return false;        }         if (w <= 0 || h <= 0) {            return true;        }         GradientPainter.INSTANCE.paint(                c, (Graphics2D)g, gradient, x, y, w, h, vertical);        return true;    }      private static class GradientPainter extends CachedPainter {        /**         * Instance used for painting.  This is the only instance that is         * ever created.         */        public static final GradientPainter INSTANCE = new GradientPainter(8);         // Size of images to create. For vertical gradients this is the width,        // otherwise it's the height.        private static final int IMAGE_SIZE = 64;         /**         * This is the actual width we're painting in, or last painted to.         */        private int w;        /**         * This is the actual height we're painting in, or last painted to         */        private int h;          GradientPainter(int count) {            super(count);        }         public void paint(Component c, Graphics2D g,                          java.util.List gradient, int x, int y, int w,                          int h, boolean isVertical) {            int imageWidth;            int imageHeight;            if (isVertical) {                imageWidth = IMAGE_SIZE;                imageHeight = h;            }            else {                imageWidth = w;                imageHeight = IMAGE_SIZE;            }            synchronized(c.getTreeLock()) {                this.w = w;                this.h = h;                paint(c, g, x, y, imageWidth, imageHeight,                      gradient, isVertical);            }        }         protected void paintToImage(Component c, Image image, Graphics g,                                    int w, int h, Object[] args) {            Graphics2D g2 = (Graphics2D)g;            java.util.List gradient = (java.util.List)args[0];            boolean isVertical = ((Boolean)args[1]).booleanValue();            // Render to the VolatileImage            if (isVertical) {                drawVerticalGradient(g2,                                     ((Number)gradient.get(0)).floatValue(),                                     ((Number)gradient.get(1)).floatValue(),                                     (Color)gradient.get(2),                                     (Color)gradient.get(3),                                     (Color)gradient.get(4), w, h);            }            else {                drawHorizontalGradient(g2,                                      ((Number)gradient.get(0)).floatValue(),                                      ((Number)gradient.get(1)).floatValue(),                                      (Color)gradient.get(2),                                      (Color)gradient.get(3),                                      (Color)gradient.get(4), w, h);            }        }         protected void paintImage(Component c, Graphics g,                                  int x, int y, int imageW, int imageH,                                  Image image, Object[] args) {            boolean isVertical = ((Boolean)args[1]).booleanValue();            // Render to the screen            g.translate(x, y);            if (isVertical) {                for (int counter = 0; counter < w; counter += IMAGE_SIZE) {                    int tileSize = Math.min(IMAGE_SIZE, w - counter);                    g.drawImage(image, counter, 0, counter + tileSize, h,                                0, 0, tileSize, h, null);                }            }            else {                for (int counter = 0; counter < h; counter += IMAGE_SIZE) {                    int tileSize = Math.min(IMAGE_SIZE, h - counter);                    g.drawImage(image, 0, counter, w, counter + tileSize,                                0, 0, w, tileSize, null);                }            }            g.translate(-x, -y);        }         private void drawVerticalGradient(Graphics2D g, float ratio1,                                          float ratio2, Color c1,Color c2,                                          Color c3, int w, int h) {            int mid = (int)(ratio1 * h);            int mid2 = (int)(ratio2 * h);            if (mid > 0) {                g.setPaint(getGradient((float)0, (float)0, c1, (float)0,                                       (float)mid, c2));                g.fillRect(0, 0, w, mid);            }            if (mid2 > 0) {                g.setColor(c2);                g.fillRect(0, mid, w, mid2);            }            if (mid > 0) {                g.setPaint(getGradient((float)0, (float)mid + mid2, c2,                                       (float)0, (float)mid * 2 + mid2, c1));                g.fillRect(0, mid + mid2, w, mid);            }            if (h - mid * 2 - mid2 > 0) {                g.setPaint(getGradient((float)0, (float)mid * 2 + mid2, c1,                                       (float)0, (float)h, c3));                g.fillRect(0, mid * 2 + mid2, w, h - mid * 2 - mid2);            }        }         private void drawHorizontalGradient(Graphics2D g, float ratio1,                                            float ratio2, Color c1,Color c2,                                            Color c3, int w, int h) {            int mid = (int)(ratio1 * w);            int mid2 = (int)(ratio2 * w);            if (mid > 0) {                g.setPaint(getGradient((float)0, (float)0, c1,                                       (float)mid, (float)0, c2));                g.fillRect(0, 0, mid, h);            }            if (mid2 > 0) {                g.setColor(c2);                g.fillRect(mid, 0, mid2, h);            }            if (mid > 0) {                g.setPaint(getGradient((float)mid + mid2, (float)0, c2,                                       (float)mid * 2 + mid2, (float)0, c1));                g.fillRect(mid + mid2, 0, mid, h);            }            if (w - mid * 2 - mid2 > 0) {                g.setPaint(getGradient((float)mid * 2 + mid2, (float)0, c1,                                       w, (float)0, c3));                g.fillRect(mid * 2 + mid2, 0, w - mid * 2 - mid2, h);            }        }         private GradientPaint getGradient(float x1, float y1,                                                 Color c1, float x2, float y2,                                                 Color c2) {            return new GradientPaint(x1, y1, c1, x2, y2, c2, true);        }    }      /**     * Returns true if the specified widget is in a toolbar.     */    static boolean isToolBarButton(JComponent c) {        return (c.getParent() instanceof JToolBar);    }     static Icon getOceanToolBarIcon(Image i) {        ImageProducer prod = new FilteredImageSource(i.getSource(),                             new OceanToolBarImageFilter());        return new ImageIconUIResource(Toolkit.getDefaultToolkit().createImage(prod));    }     static Icon getOceanDisabledButtonIcon(Image image) {        Object[] range = (Object[])UIManager.get("Button.disabledGrayRange");        int min = 180;        int max = 215;        if (range != null) {            min = ((Integer)range[0]).intValue();            max = ((Integer)range[1]).intValue();        }        ImageProducer prod = new FilteredImageSource(image.getSource(),                      new OceanDisabledButtonImageFilter(min , max));        return new ImageIconUIResource(Toolkit.getDefaultToolkit().createImage(prod));    }        /**     * Used to create a disabled Icon with the ocean look.     */    private static class OceanDisabledButtonImageFilter extends RGBImageFilter{        private float min;        private float factor;         OceanDisabledButtonImageFilter(int min, int max) {            canFilterIndexColorModel = true;            this.min = (float)min;            this.factor = (max - min) / 255f;        }         public int filterRGB(int x, int y, int rgb) {            // Coefficients are from the sRGB color space:            int gray = Math.min(255, (int)(((0.2125f * ((rgb >> 16) & 0xFF)) +                    (0.7154f * ((rgb >> 8) & 0xFF)) +                    (0.0721f * (rgb & 0xFF)) + .5f) * factor + min));             return (rgb & 0xff000000) | (gray << 16) | (gray << 8) |                (gray << 0);        }    }      /**     * Used to create the rollover icons with the ocean look.     */    private static class OceanToolBarImageFilter extends RGBImageFilter {        OceanToolBarImageFilter() {            canFilterIndexColorModel = true;        }         public int filterRGB(int x, int y, int rgb) {            int r = ((rgb >> 16) & 0xff);            int g = ((rgb >> 8) & 0xff);            int b = (rgb & 0xff);            int gray = Math.max(Math.max(r, g), b);            return (rgb & 0xff000000) | (gray << 16) | (gray << 8) |                (gray << 0);        }    }}