LayerStructure.as

リビジョン 97, 5.1 kB (コミッタ: munegon, コミット時期: 5 年前)
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1	/**
2	* com.voidelement.images.psd.PSDParser Class for ActionScript 3.0
3	*
4	* @author Copyright (c) 2007 munegon
5	* @version 0.2
6	*
7	* @link http://www.voidelement.com/
8	* @link http://void.heteml.jp/blog/
9	*
10	* Licensed under the Apache License, Version 2.0 (the "License");
11	* you may not use this file except in compliance with the License.
12	* You may obtain a copy of the License at
13	*
14	* http://www.apache.org/licenses/LICENSE-2.0
15	*
16	* Unless required by applicable law or agreed to in writing, software
17	* distributed under the License is distributed on an "AS IS" BASIS,
18	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
19	* either express or implied. See the License for the specific language
20	* governing permissions and limitations under the License.
21	*/
22
23
24	package com.voidelement.images.psd.layer {
25	import com.voidelement.images.psd.PSDParser;
26	import com.voidelement.images.psd.core.PStringB4;
27	import com.voidelement.images.psd.core.Rect;
28
29	import flash.utils.ByteArray;
30
31	public class LayerStructure {
32	private var _bounds:Rect;
33	public function get bounds():Rect { return _bounds; }
34
35	private var _numChannels:uint;
36	public function get numChannels():uint { return _numChannels; }
37
38	private var _info:Array;
39	public function get info():Array { return _info; }
40
41	private var _signature:String;
42	public function get signature():String { return _signature; }
43
44	private var _blendModeKey:String;
45	public function get blendModeKey():String { return _blendModeKey; }
46
47	private var _opacity:uint;
48	public function get opacity():uint { return _opacity; }
49
50	private var _clipping:uint;
51	public function get clipping():uint { return _clipping; }
52
53	private var _flags:uint;
54	public function get flags():uint { return _flags; }
55
56	private var _ranges:Array;
57	public function get ranges():Array { return _ranges; }
58
59	private var _name:PStringB4;
60	public function get name():PStringB4 { return _name; }
61
62	private var _extra:ByteArray;
63	public function get extra():ByteArray { return _extra; }
64
65
66	public function LayerStructure( stream:ByteArray ) {
67	_bounds = new Rect( stream );
68	_numChannels = stream.readUnsignedShort();
69	_info = new Array( numChannels );
70
71	for ( var i:uint = 0; i < numChannels; ++i ) {
72	info[i] = new ChannelLengthInfo( stream );
73	}
74
75	_signature = stream.readUTFBytes( 4 );
76
77	if ( signature != "8BIM") {
78	throw new Error("invalid signature: " + signature );
79	}
80
81	_blendModeKey = stream.readUTFBytes( 4 );
82	_opacity = stream.readUnsignedByte();
83	_clipping = stream.readUnsignedByte();
84	_flags = stream.readUnsignedByte();
85
86	stream.position += 1; // padding
87
88	PSDParser.log("blendMode: " + blendModeKey );
89	PSDParser.log("opacity: " + opacity );
90	PSDParser.log("clipping: " + clipping );
91	PSDParser.log("flags: " + ("0000000" + flags.toString( 2 ) ).substr( -8 ) );
92
93	parseExtraData( stream );
94	}
95
96	private function parseExtraData( stream:ByteArray ):void {
97	var size:uint = stream.readUnsignedInt();
98	PSDParser.log("Extra Data size: " + size );
99
100	if ( size > 0 ) {
101	var pos:uint = stream.position;
102
103	parseLayerMaskData( stream );
104	parseLayerBlendingRanges( stream );
105
106	_name = new PStringB4( stream );
107	PSDParser.log("name: " + name );
108
109	PSDParser.log("extra available: " + ( pos + size - stream.position ) );
110	stream.position += pos + size - stream.position;
111	}
112	}
113
114	private function parseLayerMaskData( stream:ByteArray ):void {
115	var size:uint = stream.readUnsignedInt();
116	PSDParser.log("Layer Mask Data size: " + size );
117
118	if ( size > 0 ) {
119	var bounds:Rect = new Rect( stream );
120	var defaultColor:uint = stream.readUnsignedByte();
121	var flags:uint = stream.readUnsignedByte();
122
123	stream.position += 2; // padding
124
125	PSDParser.log(" bounds: " + bounds.toString() );
126	PSDParser.log(" defaultColor: " + defaultColor );
127	PSDParser.log(" flags: " + ("0000000" + flags.toString( 2 ) ).substr( -8 ) );
128	}
129	}
130
131	private function parseLayerBlendingRanges( stream:ByteArray ):void {
132	var size:uint = stream.readUnsignedInt();
133	PSDParser.log("Layer Blending Ranges size: " + size );
134
135	if ( size > 0 ) {
136	var pos:uint = stream.position;
137
138	var grayBlendSource:uint = stream.readUnsignedInt();
139	var grayBlendDest:uint = stream.readUnsignedInt();
140
141	PSDParser.log(" grayBlendSource: " + ("0000000" + grayBlendSource.toString( 16 ) ).substr( -8 ) );
142	PSDParser.log(" grayBlendDest: " + ("0000000" + grayBlendDest.toString( 16 ) ).substr( -8 ) );
143
144	_ranges = new Array( numChannels );
145
146	for ( var i:uint = 0; i < numChannels; ++i ) {
147	ranges[i] = new ChannelSourceRange( stream );
148	PSDParser.log(" " + ["red", "green", "blue", "alpha"][i] + "BlendSource: " + ("0000000" + ranges[i].source.toString( 16 ) ).substr( -8 ) );
149	PSDParser.log(" " + ["red", "green", "blue", "alpha"][i] + "BlendDest: " + ("0000000" + ranges[i].dest.toString( 16 ) ).substr( -8 ) );
150	}
151	}
152	}
153	}
154	}

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Spark project

root/as3/PSDParser/src/com/voidelement/images/psd/layer/LayerStructure.as

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