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Java > Open Source Codes > org > openlaszlo > iv > flash > api > image > Bitmap


1 /*
2  * $Id: Bitmap.java,v 1.4 2002/06/24 13:53:36 awason Exp $
3  *
4  * ==========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  *
49  */
50
51 package org.openlaszlo.iv.flash.api.image;
52
53 import java.io.*;
54 import java.awt.geom.*;
55 import org.openlaszlo.iv.flash.util.*;
56 import org.openlaszlo.iv.flash.cache.*;
57 import org.openlaszlo.iv.flash.url.*;
58 import org.openlaszlo.iv.flash.parser.*;
59 import org.openlaszlo.iv.flash.api.*;
60 import org.openlaszlo.iv.flash.api.shape.*;
61
62 /**
63  * Abstract class which represent image
64  */
65 public abstract class Bitmap extends FlashDef {
66
67     protected int tagCode;
68
69     public int getTag() {
70         return tagCode;
71     }
72
73     public void setTag( int tagCode ) {
74         this.tagCode = tagCode;
75     }
76
77     public boolean isConstant() {
78         return true;
79     }
80
81     /**
82      * Return width of the bitmap in pixels
83      */
84     public int getWidth() { return (int) getBounds().getWidth(); }
85
86     /**
87      * Return height of the bitmap in pixels
88      */
89     public int getHeight() { return (int) getBounds().getHeight(); }
90
91     /**
92      * Return size of the image in bytes, which it's occupied in memory
93      */
94     public abstract int getSize();
95
96     /**
97      * Create instance of this bitmap<br>
98      * No scaling, no translating
99      *
100      * @return newly created instance (can be added to a frame)
101      */
102     public Instance newInstance() {
103         return newInstance( 0, 0, false, false );
104     }
105
106     /**
107      * Create instance of this bitmap
108      *
109      * @param width if scale is true it's width of target image in twixels (there is no resampling, just transformation)
110      * @param height if scale is true it's height of target image in twixels (there is no resampling, just transformation)
111      * @param scale if true then transform (scale) image to fit width and height (there is no resampling, just transformation)
112      * @param center if true then transform (translate) image so that its origin in the center
113      * @return newly created instance (can be added to a frame)
114      */
115     public Instance newInstance( int width, int height, boolean scale, boolean center ) {
116
117         int bmWidth = getWidth()*20;
118         int bmHeight = getHeight()*20;
119
120         Shape shape = new Shape();
121         shape.setFillStyle0( 0 );
122
123         // Translate by -1/2 pixel (10 twips) to avoid Flash rendering
124 // with top/left pixels duplicated and bottom right pixels truncated.
125 AffineTransform fillMatrix = AffineTransform.getTranslateInstance(-10, -10);
126         // Scale from twips to pixels
127 fillMatrix.scale(20, 20);
128         shape.setFillStyle1( FillStyle.newClippedBitmap(this, fillMatrix) );
129
130         shape.drawRectangle(0, 0, bmWidth, bmHeight);
131         shape.setBounds( GeomHelper.newRectangle(0, 0, bmWidth, bmHeight) );
132
133         AffineTransform myMatrix;
134         if( scale ) {
135             myMatrix = AffineTransform.getScaleInstance( (double)width/bmWidth, (double)height/bmHeight );
136         } else {
137             myMatrix = center? new AffineTransform(): null;
138         }
139         if( center ) {
140             myMatrix.translate( -bmWidth/2, -bmHeight/2 );
141         }
142
143         Instance inst = new Instance();
144         inst.def = shape;
145         inst.matrix = myMatrix;
146
147         return inst;
148     }
149
150     public static Bitmap newBitmap( String JavaDoc fileName )
151         throws IVException, IOException
152     {
153         return newBitmap( IVUrl.newUrl(fileName) );
154     }
155
156     public static Bitmap newBitmap( IVUrl url )
157         throws IVException, IOException
158     {
159         Bitmap bitmap = newBitmap( Util.readUrl(url) );
160         if( bitmap != null ) return bitmap;
161         throw new IVException( Resource.UNSUPMEDIA, new Object JavaDoc[] {url.getName()} );
162     }
163
164     /**
165      * Create bitmap from buffer
166      *
167      */
168     public static Bitmap newBitmap( FlashBuffer fb ) throws IVException {
169         // check the type of the bitmap
170 fb.setPos(0);
171         int b0 = fb.getUByte();
172         int b1 = fb.getUByte();
173         int b2 = fb.getUByte();
174         int b3 = fb.getUByte();
175
176         if( b0 == 0xff && b1 == 0xd8 ) { // jpeg: 0xff, 0xd8
177 return JPEGBitmap.newJPEGBitmap(fb);
178         } else if( b0 == 'G' && b1 == 'I' && b2 == 'F' ) { // gif: 'GIF'
179 return LLBitmap.newGIFBitmap(fb);
180         } else if( b0 == 0x89 && b1 == 0x50 && b2 == 0x4e && b3 == 0x47 ) { // png
181 return LLBitmap.newPNGBitmap(fb);
182         } else {
183             return null;
184         }
185     }
186
187     protected FlashItem copyInto( FlashItem item, ScriptCopier copier ) {
188         super.copyInto( item, copier );
189         ((Bitmap)item).tagCode = tagCode;
190         return item;
191     }
192
193 }
194
195
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