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
|
/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.graph.font;
import com.jogamp.graph.curve.OutlineShape;
import com.jogamp.opengl.math.geom.AABBox;
/**
* Interface wrapper for font implementation.
* <p>
* TrueType Font Specification:
* <ul>
* <li>http://www.freetype.org/freetype2/documentation.html</li>
* <li>http://developer.apple.com/fonts/ttrefman/rm06/Chap6.html</li>
* <li>http://www.microsoft.com/typography/SpecificationsOverview.mspx</li>
* <li>http://www.microsoft.com/typography/otspec/</li>
* </ul>
* </p>
* <p>
* TrueType Font Table Introduction:
* <ul>
* <li>http://scripts.sil.org/cms/scripts/page.php?item_id=IWS-Chapter08</li>
* </ul>
* </p>
* <p>
* Misc.:
* <ul>
* <li>Treatis on Font <code>Rasterization https://freddie.witherden.org/pages/font-rasterisation/</code></li>
* <li>Glyph Hell <code>http://walon.org/pub/ttf/ttf_glyphs.htm</code></li>
* </ul>
* </p>
*/
public interface Font {
/** font name indices for name table */
public static final int NAME_COPYRIGHT = 0;
public static final int NAME_FAMILY = 1;
public static final int NAME_SUBFAMILY = 2;
public static final int NAME_UNIQUNAME = 3;
public static final int NAME_FULLNAME = 4;
public static final int NAME_VERSION = 5;
public static final int NAME_MANUFACTURER = 8;
public static final int NAME_DESIGNER = 9;
/**
* Metrics for font
*
* Depending on the font's direction, horizontal or vertical,
* the following tables shall be used:
*
* Vertical http://developer.apple.com/fonts/TTRefMan/RM06/Chap6vhea.html
* Horizontal http://developer.apple.com/fonts/TTRefMan/RM06/Chap6hhea.html
*/
public interface Metrics {
float getAscent(float pixelSize);
float getDescent(float pixelSize);
float getLineGap(float pixelSize);
float getMaxExtend(float pixelSize);
float getScale(float pixelSize);
/**
* @param pixelSize
* @param tmpV3 caller provided temporary 3-component vector
* @return
*/
AABBox getBBox(float pixelSize, float[] tmpV3);
}
/**
* Glyph for font
*
* http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6cmap.html
* http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6glyf.html
* http://www.microsoft.com/typography/otspec/glyf.htm
*/
public interface Glyph {
// reserved special glyph IDs
// http://scripts.sil.org/cms/scripts/page.php?item_id=IWS-Chapter08#ba57949e
public static final int ID_UNKNOWN = 0;
public static final int ID_CR = 2;
public static final int ID_SPACE = 3;
public Font getFont();
public char getSymbol();
public short getID();
public AABBox getBBox();
public float getScale(float pixelSize);
/**
* @param pixelSize
* @param tmpV3 caller provided temporary 3-component vector
* @return
*/
public AABBox getBBox(float pixelSize, float[] tmpV3);
public float getAdvance(float pixelSize, boolean useFrationalMetrics);
public OutlineShape getShape();
public int hashCode();
}
public String getName(int nameIndex);
public StringBuilder getName(StringBuilder string, int nameIndex);
/** Shall return the family and subfamily name, separated a dash.
* <p>{@link #getName(StringBuilder, int)} w/ {@link #NAME_FAMILY} and {@link #NAME_SUBFAMILY}</p>
* <p>Example: "{@code Ubuntu-Regular}"</p> */
public StringBuilder getFullFamilyName(StringBuilder buffer);
public StringBuilder getAllNames(StringBuilder string, String separator);
/**
* <pre>
Font Scale Formula:
inch: 25.4 mm
pointSize: [point] = [1/72 inch]
[1] Scale := pointSize * resolution / ( 72 points per inch * units_per_em )
[2] PixelSize := pointSize * resolution / ( 72 points per inch )
[3] Scale := PixelSize / units_per_em
* </pre>
* @param fontSize in point-per-inch
* @param resolution display resolution in dots-per-inch
* @return pixel-per-inch, pixelSize scale factor for font operations.
*/
public float getPixelSize(float fontSize /* points per inch */, float resolution);
public float getAdvanceWidth(int glyphID, float pixelSize);
public Metrics getMetrics();
public Glyph getGlyph(char symbol);
public int getNumGlyphs();
public float getLineHeight(float pixelSize);
public float getStringWidth(CharSequence string, float pixelSize);
public float getStringHeight(CharSequence string, float pixelSize);
public AABBox getStringBounds(CharSequence string, float pixelSize);
public boolean isPrintableChar( char c );
/** Shall return {@link #getFullFamilyName()} */
@Override
public String toString();
}
|
