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
20 #include "FontLoader.h"
28 XFontStruct * getXFontstruct(LyXFont const & f)
30 return fontloader.load(f.family(), f.series(),
31 f.realShape(), f.size());
36 XID getFontID(LyXFont const & f)
38 return getXFontstruct(f)->fid;
43 int lyxfont::maxAscent(LyXFont const & f)
45 return getXFontstruct(f)->ascent;
49 int lyxfont::maxDescent(LyXFont const & f)
51 return getXFontstruct(f)->descent;
55 int lyxfont::ascent(char c, LyXFont const & f)
57 XFontStruct * finfo = getXFontstruct(f);
58 unsigned int uc = static_cast<unsigned char>(c);
60 && uc >= finfo->min_char_or_byte2
61 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
62 return finfo->per_char[uc - finfo->min_char_or_byte2].ascent;
68 int lyxfont::descent(char c, LyXFont const & f)
70 XFontStruct * finfo = getXFontstruct(f);
71 unsigned int uc = static_cast<unsigned char>(c);
73 && uc >= finfo->min_char_or_byte2
74 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
75 return finfo->per_char[uc - finfo->min_char_or_byte2].descent;
77 return finfo->descent;
81 int lyxfont::lbearing(char c, LyXFont const & f)
83 XFontStruct * finfo = getXFontstruct(f);
84 unsigned int uc = static_cast<unsigned char>(c);
86 && uc >= finfo->min_char_or_byte2
87 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
88 return finfo->per_char[uc - finfo->min_char_or_byte2].lbearing;
94 int lyxfont::rbearing(char c, LyXFont const & f)
96 XFontStruct * finfo = getXFontstruct(f);
97 unsigned int uc = static_cast<unsigned char>(c);
99 && uc >= finfo->min_char_or_byte2
100 && uc <= finfo->max_char_or_byte2+256*finfo->max_byte1)
101 return finfo->per_char[uc - finfo->min_char_or_byte2].rbearing;
107 int lyxfont::width(char const * s, size_t n, LyXFont const & f)
112 if (lyxrc.font_norm_type == LyXRC::ISO_10646_1) {
113 XChar2b * xs = new XChar2b[n];
114 Encoding const * encoding = f.language()->encoding();
115 //LyXFont const * font = &f;
117 if (f.family() == LyXFont::SYMBOL_FAMILY) {
118 #ifdef USE_UNICODE_FOR_SYMBOLS
120 font.setFamily(LyXFont::ROMAN_FAMILY);
121 font.setShape(LyXFont::UP_SHAPE);
124 encoding = encodings.symbol_encoding();
126 for (size_t i = 0; i < n; ++i) {
127 Uchar c = encoding->ucs(s[i]);
128 xs[i].byte1 = c >> 8;
129 xs[i].byte2 = c & 0xff;
131 int result = width(xs, n, font);
136 if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
137 return ::XTextWidth(getXFontstruct(f), s, n);
139 // emulate smallcaps since X doesn't support this
140 unsigned int result = 0;
142 LyXFont smallfont(f);
143 smallfont.decSize().decSize().setShape(LyXFont::UP_SHAPE);
144 for (size_t i = 0; i < n; ++i) {
146 // when islower is a macro, the cast is needed (JMarc)
147 if (islower(static_cast<unsigned char>(c))) {
149 result += ::XTextWidth(getXFontstruct(smallfont), &c, 1);
151 result += ::XTextWidth(getXFontstruct(f), &c, 1);
159 int lyxfont::signedWidth(string const & s, LyXFont const & f)
161 if (s.empty()) return 0;
163 return -width(s.substr(1, s.length() - 1), f);
169 //int lyxfont::width(wstring const & s, int n, LyXFont const & f)
170 int lyxfont::width(XChar2b const * s, int n, LyXFont const & f)
175 if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
176 return ::XTextWidth16(getXFontstruct(f), s, n);
178 // emulate smallcaps since X doesn't support this
179 unsigned int result = 0;
181 LyXFont smallfont(f);
182 smallfont.decSize().decSize().setShape(LyXFont::UP_SHAPE);
183 for (int i = 0; i < n; ++i) {
184 if (s[i].byte1 == 0 && islower(s[i].byte2)) {
185 c.byte2 = toupper(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