1 /* This file is part of
2 * ======================================================
4 * LyX, The Document Processor
6 * Copyright 1995 Matthias Ettrich
7 * Copyright 1995-2001 The LyX Team.
9 * ====================================================== */
14 #pragma implementation
17 #include "support/lstrings.h"
19 #include "FontLoader.h"
24 #include <boost/scoped_array.hpp>
29 XFontStruct * getXFontstruct(LyXFont const & f)
31 return fontloader.load(f.family(), f.series(),
32 f.realShape(), f.size());
37 XID getFontID(LyXFont const & f)
39 return getXFontstruct(f)->fid;
44 int lyxfont::maxAscent(LyXFont const & f)
46 return getXFontstruct(f)->ascent;
50 int lyxfont::maxDescent(LyXFont const & f)
52 return getXFontstruct(f)->descent;
56 int lyxfont::ascent(char c, LyXFont const & f)
58 XFontStruct * finfo = getXFontstruct(f);
59 unsigned int uc = static_cast<unsigned char>(c);
61 && uc >= finfo->min_char_or_byte2
62 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
63 return finfo->per_char[uc - finfo->min_char_or_byte2].ascent;
69 int lyxfont::descent(char c, LyXFont const & f)
71 XFontStruct * finfo = getXFontstruct(f);
72 unsigned int uc = static_cast<unsigned char>(c);
74 && uc >= finfo->min_char_or_byte2
75 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
76 return finfo->per_char[uc - finfo->min_char_or_byte2].descent;
78 return finfo->descent;
82 int lyxfont::lbearing(char c, LyXFont const & f)
84 XFontStruct * finfo = getXFontstruct(f);
85 unsigned int uc = static_cast<unsigned char>(c);
87 && uc >= finfo->min_char_or_byte2
88 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
89 return finfo->per_char[uc - finfo->min_char_or_byte2].lbearing;
95 int lyxfont::rbearing(char c, LyXFont const & f)
97 XFontStruct * finfo = getXFontstruct(f);
98 unsigned int uc = static_cast<unsigned char>(c);
100 && uc >= finfo->min_char_or_byte2
101 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
102 return finfo->per_char[uc - finfo->min_char_or_byte2].rbearing;
108 int lyxfont::width(char const * s, size_t n, LyXFont const & f)
113 if (lyxrc.font_norm_type == LyXRC::ISO_10646_1) {
114 boost::scoped_array<XChar2b> xs(new XChar2b[n]);
115 Encoding const * encoding = f.language()->encoding();
117 if (f.isSymbolFont()) {
118 #ifdef USE_UNICODE_FOR_SYMBOLS
119 font.setFamily(LyXFont::ROMAN_FAMILY);
120 font.setShape(LyXFont::UP_SHAPE);
122 encoding = encodings.symbol_encoding();
124 for (size_t i = 0; i < n; ++i) {
125 Uchar c = encoding->ucs(s[i]);
126 xs[i].byte1 = c >> 8;
127 xs[i].byte2 = c & 0xff;
129 int result = width(xs.get(), n, font);
133 if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
134 return ::XTextWidth(getXFontstruct(f), s, n);
136 // emulate smallcaps since X doesn't support this
137 unsigned int result = 0;
138 LyXFont smallfont(f);
139 smallfont.decSize().decSize().setShape(LyXFont::UP_SHAPE);
140 for (size_t i = 0; i < n; ++i) {
141 char const c = uppercase(s[i]);
143 result += ::XTextWidth(getXFontstruct(smallfont), &c, 1);
145 result += ::XTextWidth(getXFontstruct(f), &c, 1);
153 int lyxfont::signedWidth(string const & s, LyXFont const & f)
158 return -width(s.substr(1, s.length() - 1), f);
164 //int lyxfont::width(wstring const & s, int n, LyXFont const & f)
165 int lyxfont::width(XChar2b const * s, int n, LyXFont const & f)
170 if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
171 return ::XTextWidth16(getXFontstruct(f), s, n);
173 // emulate smallcaps since X doesn't support this
174 unsigned int result = 0;
176 LyXFont smallfont(f);
177 smallfont.decSize().decSize().setShape(LyXFont::UP_SHAPE);
178 for (int i = 0; i < n; ++i) {
182 c.byte1 = s[i].byte1;
183 c.byte2 = uppercase(s[i].byte2);
185 if (c.byte2 != s[i].byte2) {
186 result += ::XTextWidth16(getXFontstruct(smallfont), &c, 1);
188 result += ::XTextWidth16(getXFontstruct(f), &s[i], 1);
195 int lyxfont::XTextWidth(LyXFont const & f, char const * str, int count)
197 return ::XTextWidth(getXFontstruct(f), str, count);
201 int lyxfont::XTextWidth16(LyXFont const & f, XChar2b const * str, int count)
203 return ::XTextWidth16(getXFontstruct(f), str, count);
207 void lyxfont::XSetFont(Display * display, GC gc, LyXFont const & f)
209 ::XSetFont(display, gc, getFontID(f));
213 void lyxfont::rectText(string const & str, LyXFont const & font,
214 int & width, int & ascent, int & descent)
216 static int const d = 2;
217 width = lyxfont::width(str, font) + d * 2 + 2;
218 ascent = lyxfont::maxAscent(font) + d;
219 descent = lyxfont::maxDescent(font) + d;
224 void lyxfont::buttonText(string const & str, LyXFont const & font,
225 int & width, int & ascent, int & descent)
227 static int const d = 3;
229 width = lyxfont::width(str, font) + d * 2 + 2;
230 ascent = lyxfont::maxAscent(font) + d;
231 descent = lyxfont::maxDescent(font) + d;
235 //} // end of namespace font
236 //} // end of namespace lyx