diff -r bc5c66dd4730 -r 43e06bc950ec jdk/src/share/classes/javax/swing/plaf/nimbus/InnerShadowEffect.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jdk/src/share/classes/javax/swing/plaf/nimbus/InnerShadowEffect.java Sat Apr 25 21:17:50 2009 +0400 @@ -0,0 +1,131 @@ +/* + * Copyright 2005-2006 Sun Microsystems, Inc. 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. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ +package javax.swing.plaf.nimbus; + +import java.awt.image.BufferedImage; +import java.awt.image.Raster; +import java.awt.image.WritableRaster; +import java.util.Arrays; + +/** + * InnerShadowEffect - This effect currently only works with ARGB type buffered + * images. + * + * @author Created by Jasper Potts (Jun 18, 2007) + */ +class InnerShadowEffect extends ShadowEffect { + + // ================================================================================================================= + // Effect Methods + + /** + * Get the type of this effect, one of UNDER,BLENDED,OVER. UNDER means the result of apply effect should be painted + * under the src image. BLENDED means the result of apply sffect contains a modified src image so just it should be + * painted. OVER means the result of apply effect should be painted over the src image. + * + * @return The effect type + */ + Effect.EffectType getEffectType() { + return Effect.EffectType.OVER; + } + + /** + * Apply the effect to the src image generating the result . The result image may or may not contain the source + * image depending on what the effect type is. + * + * @param src The source image for applying the effect to + * @param dst The dstination image to paint effect result into. If this is null then a new image will be created + * @param w The width of the src image to apply effect to, this allow the src and dst buffers to be bigger than + * the area the need effect applied to it + * @param h The height of the src image to apply effect to, this allow the src and dst buffers to be bigger than + * the area the need effect applied to it + * @return Image with the result of the effect + */ + BufferedImage applyEffect(BufferedImage src, BufferedImage dst, int w, int h) { + if (src == null || src.getType() != BufferedImage.TYPE_INT_ARGB){ + throw new IllegalArgumentException("Effect only works with " + + "source images of type BufferedImage.TYPE_INT_ARGB."); + } + if (dst != null && dst.getType() != BufferedImage.TYPE_INT_ARGB){ + throw new IllegalArgumentException("Effect only works with " + + "destination images of type BufferedImage.TYPE_INT_ARGB."); + } + // calculate offset + double trangleAngle = Math.toRadians(angle - 90); + int offsetX = (int) (Math.sin(trangleAngle) * distance); + int offsetY = (int) (Math.cos(trangleAngle) * distance); + // clac expanded size + int tmpOffX = offsetX + size; + int tmpOffY = offsetX + size; + int tmpW = w + offsetX + size + size; + int tmpH = h + offsetX + size; + // create tmp buffers + int[] lineBuf = getArrayCache().getTmpIntArray(w); + byte[] srcAlphaBuf = getArrayCache().getTmpByteArray1(tmpW * tmpH); + Arrays.fill(srcAlphaBuf, (byte) 0xFF); + byte[] tmpBuf1 = getArrayCache().getTmpByteArray2(tmpW * tmpH); + byte[] tmpBuf2 = getArrayCache().getTmpByteArray3(tmpW * tmpH); + // extract src image alpha channel and inverse and offset + Raster srcRaster = src.getRaster(); + for (int y = 0; y < h; y++) { + int dy = (y + tmpOffY); + int offset = dy * tmpW; + srcRaster.getDataElements(0, y, w, 1, lineBuf); + for (int x = 0; x < w; x++) { + int dx = x + tmpOffX; + srcAlphaBuf[offset + dx] = (byte) ((255 - ((lineBuf[x] & 0xFF000000) >>> 24)) & 0xFF); + } + } + // blur + float[] kernel = EffectUtils.createGaussianKernel(size * 2); + EffectUtils.blur(srcAlphaBuf, tmpBuf2, tmpW, tmpH, kernel, size * 2); // horizontal pass + EffectUtils.blur(tmpBuf2, tmpBuf1, tmpH, tmpW, kernel, size * 2);// vertical pass + //rescale + float spread = Math.min(1 / (1 - (0.01f * this.spread)), 255); + for (int i = 0; i < tmpBuf1.length; i++) { + int val = (int) (((int) tmpBuf1[i] & 0xFF) * spread); + tmpBuf1[i] = (val > 255) ? (byte) 0xFF : (byte) val; + } + // create color image with shadow color and greyscale image as alpha + if (dst == null) dst = new BufferedImage(w, h, + BufferedImage.TYPE_INT_ARGB); + WritableRaster shadowRaster = dst.getRaster(); + int red = color.getRed(), green = color.getGreen(), blue = color.getBlue(); + for (int y = 0; y < h; y++) { + int srcY = y + tmpOffY; + int offset = srcY * tmpW; + int shadowOffset = (srcY - offsetY) * tmpW; + for (int x = 0; x < w; x++) { + int srcX = x + tmpOffX; + int origianlAlphaVal = 255 - ((int) srcAlphaBuf[offset + srcX] & 0xFF); + int shadowVal = (int) tmpBuf1[shadowOffset + (srcX - offsetX)] & 0xFF; + int alphaVal = Math.min(origianlAlphaVal, shadowVal); + lineBuf[x] = ((byte) alphaVal & 0xFF) << 24 | red << 16 | green << 8 | blue; + } + shadowRaster.setDataElements(0, y, w, 1, lineBuf); + } + return dst; + } +}