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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/optional/image/Scale.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/optional/image/Scale.java | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/optional/image/Scale.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/optional/image/Scale.java new file mode 100644 index 00000000..532694d6 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/optional/image/Scale.java @@ -0,0 +1,181 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package org.apache.tools.ant.types.optional.image; + +import java.awt.image.BufferedImage; +import java.awt.image.renderable.ParameterBlock; + +import javax.media.jai.JAI; +import javax.media.jai.PlanarImage; + +import org.apache.tools.ant.types.EnumeratedAttribute; + +/** + * + * @see org.apache.tools.ant.taskdefs.optional.image.Image + */ +public class Scale extends TransformOperation implements DrawOperation { + private static final int HUNDRED = 100; + + private String widthStr = "100%"; + private String heightStr = "100%"; + private boolean xPercent = true; + private boolean yPercent = true; + private String proportions = "ignore"; + + /** Enumerated class for proportions attribute. */ + public static class ProportionsAttribute extends EnumeratedAttribute { + /** {@inheritDoc}. */ + public String[] getValues() { + return new String[] {"ignore", "width", "height", "cover", "fit"}; + } + } + + /** + * Sets the behaviour regarding the image proportions. + * @param pa the enumerated value. + */ + public void setProportions(ProportionsAttribute pa) { + proportions = pa.getValue(); + } + + /** + * Sets the width of the image, either as an integer or a %. + * Defaults to 100%. + * @param width the value to use. + */ + public void setWidth(String width) { + widthStr = width; + } + + /** + * Sets the height of the image, either as an integer or a %. Defaults to 100%. + * @param height the value to use. + */ + public void setHeight(String height) { + heightStr = height; + } + + /** + * Get the width. + * @return the value converted from the width string. + */ + public float getWidth() { + float width = 0.0F; + int percIndex = widthStr.indexOf('%'); + if (percIndex > 0) { + width = Float.parseFloat(widthStr.substring(0, percIndex)); + xPercent = true; + return width / HUNDRED; + } else { + xPercent = false; + return Float.parseFloat(widthStr); + } + } + + /** + * Get the height. + * @return the value converted from the height string. + */ + public float getHeight() { + int percIndex = heightStr.indexOf('%'); + if (percIndex > 0) { + float height = Float.parseFloat(heightStr.substring(0, percIndex)); + yPercent = true; + return height / HUNDRED; + } else { + yPercent = false; + return Float.parseFloat(heightStr); + } + } + + /** + * Scale an image. + * @param image the image to scale. + * @return the scaled image. + */ + public PlanarImage performScale(PlanarImage image) { + ParameterBlock pb = new ParameterBlock(); + pb.addSource(image); + float xFl = getWidth(); + float yFl = getHeight(); + + if (!xPercent) { + xFl = (xFl / image.getWidth()); + } + if (!yPercent) { + yFl = (yFl / image.getHeight()); + } + + if ("width".equals(proportions)) { + yFl = xFl; + } else if ("height".equals(proportions)) { + xFl = yFl; + } else if ("fit".equals(proportions)) { + yFl = Math.min(xFl, yFl); + xFl = yFl; + } else if ("cover".equals(proportions)) { + yFl = Math.max(xFl, yFl); + xFl = yFl; + } + + pb.add(new Float(xFl)); + pb.add(new Float(yFl)); + + log("\tScaling to " + (xFl * HUNDRED) + "% x " + + (yFl * HUNDRED) + "%"); + + return JAI.create("scale", pb); + } + + + /** {@inheritDoc}. */ + public PlanarImage executeTransformOperation(PlanarImage image) { + BufferedImage bi = null; + final int size = instructions.size(); + for (int i = 0; i < size; i++) { + ImageOperation instr = ((ImageOperation) instructions.elementAt(i)); + if (instr instanceof DrawOperation) { + return performScale(image); + } else if (instr instanceof TransformOperation) { + bi = image.getAsBufferedImage(); + image = ((TransformOperation) instr) + .executeTransformOperation(PlanarImage.wrapRenderedImage(bi)); + bi = image.getAsBufferedImage(); + } + } + return performScale(image); + } + + + /** {@inheritDoc}. */ + public PlanarImage executeDrawOperation() { + final int size = instructions.size(); + for (int i = 0; i < size; i++) { + ImageOperation instr = ((ImageOperation) instructions.elementAt(i)); + if (instr instanceof DrawOperation) { + PlanarImage image = null; + // If this TransformOperation has DrawOperation children + // then Rotate the first child and return. + performScale(image); + return image; + } + } + return null; + } +} |