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
|
/* Font backend for Android terminals. -*- c-file-style: "GNU" -*-
Copyright (C) 2023 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
package org.gnu.emacs;
import android.os.Build;
/* This code is mostly unused. See sfntfont-android.c for the code
that is actually used. */
public abstract class EmacsFontDriver
{
/* Font weights. */
public static final int THIN = 0;
public static final int ULTRA_LIGHT = 40;
public static final int LIGHT = 50;
public static final int SEMI_LIGHT = 55;
public static final int REGULAR = 80;
public static final int MEDIUM = 100;
public static final int SEMI_BOLD = 180;
public static final int BOLD = 200;
public static final int EXTRA_BOLD = 205;
public static final int BLACK = 210;
public static final int ULTRA_HEAVY = 250;
/* Font slants. */
public static final int REVERSE_OBLIQUE = 0;
public static final int REVERSE_ITALIC = 10;
public static final int NORMAL = 100;
public static final int ITALIC = 200;
public static final int OBLIQUE = 210;
/* Font widths. */
public static final int ULTRA_CONDENSED = 50;
public static final int EXTRA_CONDENSED = 63;
public static final int CONDENSED = 75;
public static final int SEMI_CONDENSED = 87;
public static final int UNSPECIFIED = 100;
public static final int SEMI_EXPANDED = 113;
public static final int EXPANDED = 125;
public static final int EXTRA_EXPANDED = 150;
public static final int ULTRA_EXPANDED = 200;
/* Font spacings. */
public static final int PROPORTIONAL = 0;
public static final int DUAL = 90;
public static final int MONO = 100;
public static final int CHARCELL = 110;
/* Special glyph codes. */
public static final int FONT_INVALID_CODE = 0xFFFFFFFF;
public static class FontSpec
{
/* The fields below mean the same as they do in enum
font_property_index in font.h. */
public String foundry;
public String family;
public String adstyle;
public String registry;
public Integer width;
public Integer weight;
public Integer slant;
public Integer size;
public Integer spacing;
public Integer avgwidth;
public Integer dpi;
@Override
public String
toString ()
{
return ("foundry: " + foundry
+ " family: " + family
+ " adstyle: " + adstyle
+ " registry: " + registry
+ " width: " + width
+ " weight: " + weight
+ " slant: " + slant
+ " spacing: " + spacing
+ " avgwidth: " + avgwidth
+ " dpi: " + dpi);
}
};
public static class FontMetrics
{
public short lbearing;
public short rbearing;
public short width;
public short ascent;
public short descent;
@Override
public String
toString ()
{
return ("lbearing " + lbearing
+ " rbearing " + rbearing
+ " width " + width
+ " ascent " + ascent
+ " descent " + descent);
}
}
public static class FontEntity extends FontSpec
{
/* No extra fields here. */
};
public abstract class FontObject extends FontSpec
{
public int minWidth;
public int maxWidth;
public int pixelSize;
public int height;
public int spaceWidth;
public int averageWidth;
public int ascent;
public int descent;
public int underlineThickness;
public int underlinePosition;
public int baselineOffset;
public int relativeCompose;
public int defaultAscent;
public int encodingCharset;
public int repertoryCharset;
public
FontObject ()
{
encodingCharset = -1;
repertoryCharset = -1;
}
};
/* These mean the same as they do in struct font_driver. */
public abstract FontEntity[] list (FontSpec fontSpec);
public abstract FontEntity match (FontSpec fontSpec);
public abstract String[] listFamilies ();
public abstract FontObject openFont (FontEntity fontEntity, int pixelSize);
public abstract int hasChar (FontSpec font, int charCode);
public abstract void textExtents (FontObject font, int code[],
FontMetrics fontMetrics);
public abstract int encodeChar (FontObject fontObject, int charCode);
public abstract int draw (FontObject fontObject, EmacsGC gc,
EmacsDrawable drawable, int[] chars,
int x, int y, int backgroundWidth,
boolean withBackground);
public static EmacsFontDriver
createFontDriver ()
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
return new EmacsSdk23FontDriver ();
return new EmacsSdk7FontDriver ();
}
};
|
