--- /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;
+ }
+}