/* * Copyright (c) 2004, 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 sun.swing.plaf.synth; import java.awt.*;import java.awt.image.BufferedImage;import sun.swing.CachedPainter; /** * Paint9Painter is used for painting images for both Synth and GTK's * pixmap/blueprint engines. * */public class Paint9Painter extends CachedPainter {    /**     * Enumeration for the types of painting this class can handle.     */    public enum PaintType {        /**         * Painting type indicating the image should be centered in         * the space provided.  When used the <code>mask</code> is ignored.         */        CENTER,         /**         * Painting type indicating the image should be tiled across the         * specified width and height.  When used the <code>mask</code> is         * ignored.         */        TILE,         /**         * Painting type indicating the image should be split into nine         * regions with the top, left, bottom and right areas stretched.         */        PAINT9_STRETCH,         /**         * Painting type indicating the image should be split into nine         * regions with the top, left, bottom and right areas tiled.         */        PAINT9_TILE    };     private static final Insets EMPTY_INSETS = new Insets(0, 0, 0, 0);     public static final int PAINT_TOP_LEFT = 1;    public static final int PAINT_TOP = 2;    public static final int PAINT_TOP_RIGHT = 4;    public static final int PAINT_LEFT = 8;    public static final int PAINT_CENTER = 16;    public static final int PAINT_RIGHT = 32;    public static final int PAINT_BOTTOM_RIGHT = 64;    public static final int PAINT_BOTTOM = 128;    public static final int PAINT_BOTTOM_LEFT = 256;    /**     * Specifies that all regions should be painted.  If this is set any     * other regions specified will not be painted.  For example     * PAINT_ALL | PAINT_CENTER will paint all but the center.     */    public static final int PAINT_ALL = 512;     /**     * Conveniance method for testing the validity of an image.     *     * @param image Image to check.     * @return true if <code>image</code> is non-null and has a positive     *         size.     */    public static boolean validImage(Image image) {        return (image != null && image.getWidth(null) > 0 &&                image.getHeight(null) > 0);    }      public Paint9Painter(int cacheCount) {        super(cacheCount);    }     /**     * Paints using the algorightm specified by <code>paintType</code>.     * NOTE that this just invokes super.paint(...) with the same     * argument ordering as this method.     *     * @param c Component rendering to     * @param g Graphics to render to     * @param x X-coordinate     * @param y Y-coordinate     * @param w Width to render to     * @param h Height to render to     * @param source Image to render from, if <code>null</code> this method     *               will do nothing     * @param sInsets Insets specifying the portion of the image that     *                will be stretched or tiled, if <code>null</code> empty     *                <code>Insets</code> will be used.     * @param dInsets Destination insets specifying the portion of the image     *                will be stretched or tiled, if <code>null</code> empty     *                <code>Insets</code> will be used.     * @param paintType Specifies what type of algorithm to use in painting     * @param mask Specifies portion of image to render, if     *             <code>PAINT_ALL</code> is specified, any other regions     *             specified will not be painted, for example     *             PAINT_ALL | PAINT_CENTER paints everything but the center.     */    public void paint(Component c, Graphics g, int x,                      int y, int w, int h, Image source, Insets sInsets,                      Insets dInsets,                      PaintType type, int mask) {        if (source == null) {            return;        }        super.paint(c, g, x, y, w, h, source, sInsets, dInsets, type, mask);    }     protected void paintToImage(Component c, Image destImage, Graphics g,                                int w, int h, Object[] args) {        int argIndex = 0;        while (argIndex < args.length) {            Image image = (Image)args[argIndex++];            Insets sInsets = (Insets)args[argIndex++];            Insets dInsets = (Insets)args[argIndex++];            PaintType type = (PaintType)args[argIndex++];            int mask = (Integer)args[argIndex++];            paint9(g, 0, 0, w, h, image, sInsets, dInsets, type, mask);        }    }     protected void paint9(Graphics g, int x, int y, int w, int h,                          Image image, Insets sInsets,                          Insets dInsets, PaintType type, int componentMask) {        if (!validImage(image)) {            return;        }        if (sInsets == null) {            sInsets = EMPTY_INSETS;        }        if (dInsets == null) {            dInsets = EMPTY_INSETS;        }        int iw = image.getWidth(null);        int ih = image.getHeight(null);         if (type == PaintType.CENTER) {            // Center the image            g.drawImage(image, x + (w - iw) / 2,                        y + (h - ih) / 2, null);        }        else if (type == PaintType.TILE) {            // Tile the image            int lastIY = 0;            for (int yCounter = y, maxY = y + h; yCounter < maxY;                     yCounter += (ih - lastIY), lastIY = 0) {                int lastIX = 0;                for (int xCounter = x, maxX = x + w; xCounter < maxX;                             xCounter += (iw - lastIX), lastIX = 0) {                    int dx2 = Math.min(maxX, xCounter + iw - lastIX);                    int dy2 = Math.min(maxY, yCounter + ih - lastIY);                    g.drawImage(image, xCounter, yCounter, dx2, dy2,                                lastIX, lastIY, lastIX + dx2 - xCounter,                                lastIY + dy2 - yCounter, null);                }            }        }        else {            int st = sInsets.top;            int sl = sInsets.left;            int sb = sInsets.bottom;            int sr = sInsets.right;             int dt = dInsets.top;            int dl = dInsets.left;            int db = dInsets.bottom;            int dr = dInsets.right;             // Constrain the insets to the size of the image            if (st + sb > ih) {                db = dt = sb = st = Math.max(0, ih / 2);            }            if (sl + sr > iw) {                dl = dr = sl = sr = Math.max(0, iw / 2);            }             // Constrain the insets to the size of the region we're painting            // in.            if (dt + db > h) {                dt = db = Math.max(0, h / 2 - 1);            }            if (dl + dr > w) {                dl = dr = Math.max(0, w / 2 - 1);            }             boolean stretch = (type == PaintType.PAINT9_STRETCH);            if ((componentMask & PAINT_ALL) != 0) {                componentMask = (PAINT_ALL - 1) & ~componentMask;            }             if ((componentMask & PAINT_LEFT) != 0) {                drawChunk(image, g, stretch, x, y + dt, x + dl, y + h - db,                          0, st, sl, ih - sb, false);            }            if ((componentMask & PAINT_TOP_LEFT) != 0) {                drawImage(image, g, x, y, x + dl, y + dt,                          0, 0, sl, st);            }            if ((componentMask & PAINT_TOP) != 0) {                drawChunk(image, g, stretch, x + dl, y, x + w - dr, y + dt,                          sl, 0, iw - sr, st, true);            }            if ((componentMask & PAINT_TOP_RIGHT) != 0) {                drawImage(image, g, x + w - dr, y, x + w, y + dt,                            iw - sr, 0, iw, st);            }            if ((componentMask & PAINT_RIGHT) != 0) {                drawChunk(image, g, stretch,                          x + w - dr, y + dt, x + w, y + h - db,                          iw - sr, st, iw, ih - sb, false);            }            if ((componentMask & PAINT_BOTTOM_RIGHT) != 0) {                drawImage(image, g, x + w - dr, y + h - db, x + w, y + h,                            iw - sr, ih - sb, iw, ih);            }            if ((componentMask & PAINT_BOTTOM) != 0) {                drawChunk(image, g, stretch,                          x + dl, y + h - db, x + w - dr, y + h,                          sl, ih - sb, iw - sr, ih, true);            }            if ((componentMask & PAINT_BOTTOM_LEFT) != 0) {                drawImage(image, g, x, y + h - db, x + dl, y + h,                          0, ih - sb, sl, ih);            }            if ((componentMask & PAINT_CENTER) != 0) {                drawImage(image, g, x + dl, y + dt, x + w - dr, y + h - db,                          sl, st, iw - sr, ih - sb);            }        }    }     private void drawImage(Image image, Graphics g,                           int dx1, int dy1, int dx2, int dy2, int sx1,                           int sy1, int sx2, int sy2) {        // PENDING: is this necessary, will G2D do it for me?        if (dx2 - dx1 <= 0 || dy2 - dy1 <= 0 || sx2 - sx1 <= 0 ||                              sy2 - sy1 <= 0) {            // Bogus location, nothing to paint            return;        }        g.drawImage(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null);    }     /**     * Draws a portion of an image, stretched or tiled.     *     * @param image Image to render.     * @param g Graphics to render to     * @param stretch Whether the image should be stretched or timed in the     *                provided space.     * @param dx1 X origin to draw to     * @param dy1 Y origin to draw to     * @param dx2 End x location to draw to     * @param dy2 End y location to draw to     * @param sx1 X origin to draw from     * @param sy1 Y origin to draw from     * @param sx2 Max x location to draw from     * @param sy2 Max y location to draw from     * @param xDirection Used if the image is not stretched. If true it     *        indicates the image should be tiled along the x axis.     */    private void drawChunk(Image image, Graphics g, boolean stretch,                           int dx1, int dy1, int dx2, int dy2, int sx1,                           int sy1, int sx2, int sy2,                           boolean xDirection) {        if (dx2 - dx1 <= 0 || dy2 - dy1 <= 0 || sx2 - sx1 <= 0 ||                              sy2 - sy1 <= 0) {            // Bogus location, nothing to paint            return;        }        if (stretch) {            g.drawImage(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null);        }        else {            int xSize = sx2 - sx1;            int ySize = sy2 - sy1;            int deltaX;            int deltaY;             if (xDirection) {                deltaX = xSize;                deltaY = 0;            }            else {                deltaX = 0;                deltaY = ySize;            }            while (dx1 < dx2 && dy1 < dy2) {                int newDX2 = Math.min(dx2, dx1 + xSize);                int newDY2 = Math.min(dy2, dy1 + ySize);                 g.drawImage(image, dx1, dy1, newDX2, newDY2,                            sx1, sy1, sx1 + newDX2 - dx1,                            sy1 + newDY2 - dy1, null);                dx1 += deltaX;                dy1 += deltaY;            }        }    }     /**     * Subclassed to always create a translucent image.     */    protected Image createImage(Component c, int w, int h,                                GraphicsConfiguration config,                                Object[] args) {        if (config == null) {            return new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);        }        return config.createCompatibleImage(w, h, Transparency.TRANSLUCENT);    }}