| /* | |
| * Copyright (c) 2004, 2013, 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; | |
| /** | |
| * Convenience 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 algorithm 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 type 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); | |
| } | |
| } |