| /* |
| |
| 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.batik.transcoder.wmf.tosvg; |
| |
| import java.awt.Paint; |
| import java.awt.Color; |
| import java.awt.Graphics2D; |
| import java.awt.TexturePaint; |
| import java.awt.image.BufferedImage; |
| import java.awt.geom.*; |
| import java.util.Map; |
| import java.util.HashMap; |
| |
| import org.apache.batik.transcoder.wmf.WMFConstants; |
| |
| /** |
| * This class generate Paints from WMF hatch definitions. All generated |
| * Paints are cached for future use. |
| * |
| * @version $Id$ |
| */ |
| public final class TextureFactory { |
| private static TextureFactory fac = null; |
| private Map textures = new HashMap(1); |
| private static final int SIZE = 10; |
| private float scale = 1.0f; |
| |
| private TextureFactory(float scale) { |
| } |
| |
| /** Get the unique instance of the class. |
| */ |
| public static TextureFactory getInstance() { |
| if (fac == null) fac = new TextureFactory(1.0f); |
| return fac; |
| } |
| |
| /** Get the unique instance of the class, setting the scale of the pattern. |
| * TODO : scale is not handled for now |
| */ |
| public static TextureFactory getInstance(float scale) { |
| if (fac == null) fac = new TextureFactory(scale); |
| return fac; |
| } |
| |
| /** Rest the factory. It empties all the previouly cached Paints are |
| * disposed of. |
| */ |
| public void reset() { |
| textures.clear(); |
| } |
| |
| /** Get a texture from a WMF hatch definition (in black Color). This |
| * texture will be cached, so the Paint will only be created once. |
| */ |
| public Paint getTexture(int textureId) { |
| Integer _itexture = textureId; |
| if (textures.containsKey( _itexture)) { |
| Paint paint = (Paint)(textures.get(_itexture)); |
| return paint; |
| } else { |
| Paint paint = createTexture(textureId, null, null); |
| if (paint != null) textures.put(_itexture, paint); |
| return paint; |
| } |
| } |
| |
| /** Get a texture from a WMF hatch definition, with a foreground color. This |
| * texture will be cached, so the Paint will only be created once. |
| */ |
| public Paint getTexture(int textureId, Color foreground) { |
| ColoredTexture _ctexture = new ColoredTexture(textureId, foreground, null); |
| if (textures.containsKey(_ctexture)) { |
| Paint paint = (Paint)(textures.get(_ctexture)); |
| return paint; |
| } else { |
| Paint paint = createTexture(textureId, foreground, null); |
| if (paint != null) textures.put(_ctexture, paint); |
| return paint; |
| } |
| } |
| |
| /** Get a texture from a WMF hatch definition, with a foreground and a |
| * background color. This texture will be cached, so the Paint will |
| * only be created once. |
| */ |
| public Paint getTexture(int textureId, Color foreground, Color background) { |
| ColoredTexture _ctexture = new ColoredTexture(textureId, foreground, background); |
| if (textures.containsKey(_ctexture)) { |
| Paint paint = (Paint)(textures.get(_ctexture)); |
| return paint; |
| } else { |
| Paint paint = createTexture(textureId, foreground, background); |
| if (paint != null) textures.put(_ctexture, paint); |
| return paint; |
| } |
| } |
| |
| /** Called internally if the Paint does not exist in the cache and must |
| * be created. |
| */ |
| private Paint createTexture(int textureId, Color foreground, Color background) { |
| BufferedImage img = new BufferedImage(SIZE, SIZE, BufferedImage.TYPE_INT_ARGB); |
| Graphics2D g2d = img.createGraphics(); |
| Rectangle2D rec = new Rectangle2D.Float(0, 0, SIZE, SIZE); |
| Paint paint = null; |
| boolean ok = false; |
| if (background != null) { |
| g2d.setColor(background); |
| g2d.fillRect(0, 0, SIZE, SIZE); |
| } |
| if (foreground == null) g2d.setColor(Color.black); |
| else g2d.setColor(foreground); |
| |
| if (textureId == WMFConstants.HS_VERTICAL) { |
| for (int i = 0; i < 5; i++) { |
| g2d.drawLine(i*10, 0, i*10, SIZE); |
| } |
| ok = true; |
| } else if (textureId == WMFConstants.HS_HORIZONTAL) { |
| for (int i = 0; i < 5; i++) { |
| g2d.drawLine(0, i*10, SIZE, i*10); |
| } |
| ok = true; |
| } else if (textureId == WMFConstants.HS_BDIAGONAL) { |
| for (int i = 0; i < 5; i++) { |
| g2d.drawLine(0, i*10, i*10, 0); |
| } |
| ok = true; |
| } else if (textureId == WMFConstants.HS_FDIAGONAL) { |
| for (int i = 0; i < 5; i++) { |
| g2d.drawLine(0, i*10, SIZE - i*10, SIZE); |
| } |
| ok = true; |
| } else if (textureId == WMFConstants.HS_DIAGCROSS) { |
| for (int i = 0; i < 5; i++) { |
| g2d.drawLine(0, i*10, i*10, 0); |
| g2d.drawLine(0, i*10, SIZE - i*10, SIZE); |
| } |
| ok = true; |
| } else if (textureId == WMFConstants.HS_CROSS) { |
| for (int i = 0; i < 5; i++) { |
| g2d.drawLine(i*10, 0, i*10, SIZE); |
| g2d.drawLine(0, i*10, SIZE, i*10); |
| } |
| ok = true; |
| } |
| img.flush(); |
| if (ok) paint = new TexturePaint(img, rec); |
| return paint; |
| } |
| |
| /** Contain a handle to a Colored texture, with optional foreground and |
| * background colors. |
| */ |
| private class ColoredTexture { |
| |
| final int textureId; |
| final Color foreground; |
| final Color background; |
| |
| ColoredTexture(int textureId, Color foreground, Color background) { |
| this.textureId = textureId; |
| this.foreground = foreground; |
| this.background = background; |
| } |
| } |
| } |