blob: 7421c5f28e700b6df331f4bd0934389d52850c93 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*
* Copyright 1999-2005 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.render.ps;
import java.io.IOException;
import java.io.Serializable;
import java.util.List;
import java.awt.Color;
import java.awt.geom.AffineTransform;
/**
* This class holds the current state of the PostScript interpreter.
*
* @author <a href="mailto:fop-dev@xml.apache.org">Apache XML FOP Development Team</a>
* @version $Id$
*/
public class PSState implements Serializable {
/** Default for setdash */
public static final String DEFAULT_DASH = "[] 0";
/** Default color in PostScript */
public static final Color DEFAULT_RGB_COLOR = Color.black;
private AffineTransform transform = new AffineTransform();
private List transformConcatList = new java.util.ArrayList();
private int linecap = 0;
private double linewidth = 1.0f;
private String dashpattern = DEFAULT_DASH;
private Color rgbColor = DEFAULT_RGB_COLOR;
//Font state
private String fontname;
private float fontsize;
/**
* Default constructor
*/
public PSState() {
//nop
}
/**
* Copy constructor
* @param org the original to copy from
* @param copyTransforms true if the list of matrix concats should be cloned, too
*/
public PSState(PSState org, boolean copyTransforms) {
this.transform = (AffineTransform)org.transform.clone();
if (copyTransforms) {
this.transformConcatList.addAll(org.transformConcatList);
}
this.linecap = org.linecap;
this.linewidth = org.linewidth;
this.dashpattern = org.dashpattern;
this.rgbColor = org.rgbColor;
this.fontname = org.fontname;
this.fontsize = org.fontsize;
}
/**
* Returns the transform.
* @return the current transformation matrix
*/
public AffineTransform getTransform() {
return this.transform;
}
/**
* Check the current transform.
* The transform for the current state is the combination of all
* transforms in the current state. The parameter is compared
* against this current transform.
*
* @param tf the transform the check against
* @return true if the new transform is different then the current transform
*/
public boolean checkTransform(AffineTransform tf) {
return !tf.equals(this.transform);
}
/**
* Concats the given transformation matrix with the current one.
* @param transform The new transformation matrix
*/
public void concatMatrix(AffineTransform transform) {
this.transformConcatList.add(transform);
this.transform.concatenate(transform);
}
/**
* Establishes the specified line cap.
* @param value line cap (0, 1 or 2) as defined by the setlinecap command
* @return true if the line cap changed compared to the previous setting
*/
public boolean useLineCap(int value) {
if (linecap != value) {
linecap = value;
return true;
} else {
return false;
}
}
/**
* Establishes the specified line width.
* @param value line width as defined by the setlinewidth command
* @return true if the line width changed compared to the previous setting
*/
public boolean useLineWidth(double value) {
if (linewidth != value) {
linewidth = value;
return true;
} else {
return false;
}
}
/**
* Establishes the specified dash.
* @param pattern dash pattern as defined by the setdash command
* @return true if the dash pattern changed compared to the previous setting
*/
public boolean useDash(String pattern) {
if (!dashpattern.equals(pattern)) {
dashpattern = pattern;
return true;
} else {
return false;
}
}
/**
* Establishes the specified color (RGB).
* @param value color as defined by the setrgbcolor command
* @return true if the color changed compared to the previous setting
*/
public boolean useColor(Color value) {
if (!rgbColor.equals(value)) {
rgbColor = value;
return true;
} else {
return false;
}
}
/**
* Establishes the specified font and size.
* @param name name of the font for the "F" command (see FOP Std Proc Set)
* @param size size of the font
* @return true if the font changed compared to the previous setting
*/
public boolean useFont(String name, float size) {
if (name == null) {
throw new NullPointerException("font name must not be null");
}
if (fontname == null || !fontname.equals(name) || fontsize != size) {
fontname = name;
fontsize = size;
return true;
} else {
return false;
}
}
/**
* Reestablishes the graphics state represented by this instance by issueing the
* necessary commands.
* @param gen The generator to use for output
* @exception IOException In case of an I/O problem
*/
public void reestablish(PSGenerator gen) throws IOException {
for (int i = 0, len = transformConcatList.size(); i < len; i++) {
gen.concatMatrix((AffineTransform)transformConcatList.get(i));
}
gen.useLineCap(linecap);
gen.useLineWidth(linewidth);
gen.useDash(dashpattern);
gen.useRGBColor(rgbColor);
if (fontname != null) {
gen.useFont(fontname, fontsize);
}
}
}
|
