mirror of
https://git.lyx.org/repos/lyx.git
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48503551b1
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2505 a592a061-630c-0410-9148-cb99ea01b6c8
730 lines
14 KiB
C
730 lines
14 KiB
C
#include <config.h>
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#include <algorithm>
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#include "mathed/support.h"
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#include "lyxfont.h"
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#include "font.h"
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#include "math_defs.h"
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#include "math_parser.h"
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#include "Painter.h"
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#include "debug.h"
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using std::sort;
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using std::lower_bound;
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using std::endl;
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using std::max;
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bool MathIsAlphaFont(MathTextCodes x)
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{
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return LM_TC_VAR <= x && x <= LM_TC_TEXTRM;
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}
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///
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class Matrix {
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public:
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///
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typedef float matriz_data[2][2];
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///
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Matrix();
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///
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void rotate(int);
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///
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void escalate(float, float);
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///
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void transform(float, float, float &, float &);
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private:
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///
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matriz_data m_;
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///
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void multiply(matriz_data & a);
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};
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Matrix::Matrix()
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{
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m_[0][0] = 1;
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m_[0][1] = 0;
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m_[1][0] = 0;
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m_[1][1] = 1;
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}
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void Matrix::rotate(int code)
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{
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matriz_data r;
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r[0][0] = 1;
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r[0][1] = 0;
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r[1][0] = 0;
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r[1][1] = 1;
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float const cs = (code & 1) ? 0 : (1 - code);
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float const sn = (code & 1) ? (2 - code) : 0;
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r[0][0] = cs;
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r[0][1] = sn;
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r[1][0] = -r[0][1];
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r[1][1] = r[0][0];
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multiply(r);
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}
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void Matrix::escalate(float x, float y)
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{
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matriz_data s;
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s[0][0] = x;
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s[0][1] = 0;
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s[1][0] = 0;
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s[1][1] = y;
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multiply(s);
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}
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void Matrix::multiply(matriz_data & a)
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{
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matriz_data c;
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c[0][0] = a[0][0] * m_[0][0] + a[0][1] * m_[1][0];
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c[1][0] = a[1][0] * m_[0][0] + a[1][1] * m_[1][0];
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c[0][1] = a[0][0] * m_[0][1] + a[0][1] * m_[1][1];
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c[1][1] = a[1][0] * m_[0][1] + a[1][1] * m_[1][1];
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m_[0][0] = c[0][0];
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m_[0][1] = c[0][1];
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m_[1][0] = c[1][0];
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m_[1][1] = c[1][1];
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}
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void Matrix::transform(float xp, float yp, float & x, float & y)
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{
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x = m_[0][0] * xp + m_[0][1] * yp;
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y = m_[1][0] * xp + m_[1][1] * yp;
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}
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namespace {
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LyXFont * Math_Fonts = 0;
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void mathed_init_fonts()
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{
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Math_Fonts = new LyXFont[8]; //DEC cxx cannot initialize all fonts
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//at once (JMarc) rc
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for (int i = 0 ; i < 8 ; ++i) {
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Math_Fonts[i] = LyXFont(LyXFont::ALL_SANE);
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}
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Math_Fonts[0].setShape(LyXFont::ITALIC_SHAPE);
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Math_Fonts[1].setFamily(LyXFont::SYMBOL_FAMILY);
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Math_Fonts[2].setFamily(LyXFont::SYMBOL_FAMILY);
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Math_Fonts[2].setShape(LyXFont::ITALIC_SHAPE);
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Math_Fonts[3].setSeries(LyXFont::BOLD_SERIES);
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Math_Fonts[4].setFamily(LyXFont::SANS_FAMILY);
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Math_Fonts[4].setShape(LyXFont::ITALIC_SHAPE);
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Math_Fonts[5].setFamily(LyXFont::TYPEWRITER_FAMILY);
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Math_Fonts[6].setFamily(LyXFont::ROMAN_FAMILY);
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Math_Fonts[7].setFamily(LyXFont::SANS_FAMILY);
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}
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} // namespace
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LyXFont WhichFont(MathTextCodes type, MathStyles size)
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{
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LyXFont f;
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if (!Math_Fonts)
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mathed_init_fonts();
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switch (type) {
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case LM_TC_SYMB:
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case LM_TC_BSYM:
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f = Math_Fonts[2];
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break;
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case LM_TC_VAR:
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case LM_TC_IT:
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f = Math_Fonts[0];
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break;
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case LM_TC_BF:
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f = Math_Fonts[3];
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break;
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case LM_TC_SF:
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f = Math_Fonts[7];
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break;
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case LM_TC_CAL:
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f = Math_Fonts[4];
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break;
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case LM_TC_TT:
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f = Math_Fonts[5];
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break;
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case LM_TC_SPECIAL: //f = Math_Fonts[0]; break;
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case LM_TC_TEXTRM:
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case LM_TC_TEX:
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case LM_TC_RM:
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f = Math_Fonts[6];
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break;
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default:
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f = Math_Fonts[1];
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break;
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}
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switch (size) {
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case LM_ST_DISPLAY:
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if (type == LM_TC_BSYM) {
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f.incSize();
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f.incSize();
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}
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break;
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case LM_ST_TEXT:
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break;
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case LM_ST_SCRIPT:
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f.decSize();
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f.decSize();
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break;
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case LM_ST_SCRIPTSCRIPT:
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f.decSize();
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f.decSize();
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f.decSize();
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break;
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default:
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lyxerr << "Math Error: wrong font size: " << size << endl;
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break;
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}
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if (type != LM_TC_TEXTRM)
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f.setColor(LColor::math);
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if (type == LM_TC_TEX)
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f.setColor(LColor::latex);
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return f;
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}
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char const * math_font_name[] = {
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"mathrm",
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"mathcal",
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"mathbf",
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"mathsf",
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"mathtt",
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"mathit",
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"textrm"
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};
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namespace {
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/*
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* Internal struct of a drawing: code n x1 y1 ... xn yn, where code is:
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* 0 = end, 1 = line, 2 = polyline, 3 = square line, 4= square polyline
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*/
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float const parenthHigh[] = {
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2.0, 13.0,
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0.9840, 0.0014, 0.7143, 0.0323, 0.4603, 0.0772,
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0.2540, 0.1278, 0.1746, 0.1966, 0.0952, 0.3300,
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0.0950, 0.5000, 0.0952, 0.6700, 0.1746, 0.8034,
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0.2540, 0.8722, 0.4603, 0.9228, 0.7143, 0.9677,
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0.9840, 0.9986,
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0.0
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};
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float const parenth[] = {
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2.0, 13.0,
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0.9930, 0.0071, 0.7324, 0.0578, 0.5141, 0.1126,
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0.3380, 0.1714, 0.2183, 0.2333, 0.0634, 0.3621,
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0.0141, 0.5000, 0.0563, 0.6369, 0.2113, 0.7647,
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0.3310, 0.8276, 0.5070, 0.8864, 0.7254, 0.9412,
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0.9930, 0.9919,
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0.0
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};
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float const brace[] = {
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2.0, 21.0,
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0.9492, 0.0020, 0.9379, 0.0020, 0.7458, 0.0243,
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0.5819, 0.0527, 0.4859, 0.0892, 0.4463, 0.1278,
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0.4463, 0.3732, 0.4011, 0.4199, 0.2712, 0.4615,
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0.0734, 0.4919, 0.0113, 0.5000, 0.0734, 0.5081,
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0.2712, 0.5385, 0.4011, 0.5801, 0.4463, 0.6268,
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0.4463, 0.8722, 0.4859, 0.9108, 0.5819, 0.9473,
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0.7458, 0.9757, 0.9379, 0.9980, 0.9492, 0.9980,
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0.0
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};
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// Is this correct? (Lgb)
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float const arrow[] = {
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4, 7,
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0.0150, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
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0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
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0.9500, 0.7500,
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3, 0.5000, 0.1500, 0.5000, 0.9500,
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0.0
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};
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// Is this correct? (Lgb)
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float const Arrow[] = {
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4, 7,
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0.0150, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
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0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
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0.9500, 0.7500,
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3, 0.3500, 0.5000, 0.3500, 0.9500,
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3, 0.6500, 0.5000, 0.6500, 0.9500,
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0.0
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};
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float const udarrow[] = {
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2, 3,
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0.015, 0.25, 0.5, 0.05, 0.95, 0.25,
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2, 3,
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0.015, 0.75, 0.5, 0.95, 0.95, 0.75,
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1, 0.5, 0.2, 0.5, 0.8,
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0.0
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};
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float const Udarrow[] = {
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2, 3,
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0.015, 0.25, 0.5, 0.05, 0.95, 0.25,
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2, 3,
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0.015, 0.75, 0.5, 0.95, 0.95, 0.75,
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1, 0.35, 0.2, 0.35, 0.8,
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1, 0.65, 0.2, 0.65, 0.8,
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0.0
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};
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float const brack[] = {
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2.0, 4,
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0.95, 0.05, 0.05, 0.05, 0.05, 0.95, 0.95, 0.95,
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0.0
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};
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float const corner[] = {
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2.0, 3,
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0.95, 0.05, 0.05, 0.05, 0.05, 0.95,
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0.0
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};
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float const angle[] = {
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2.0, 3,
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1, 0, 0.05, 0.5, 1, 1,
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0.0
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};
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float const slash[] = {
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1, 0.95, 0.05, 0.05, 0.95,
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0.0
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};
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float const hline[] = {
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1, 0.05, 0.5, 0.95, 0.5,
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0.0
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};
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float const hline2[] = {
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1, 0.1, 0.5, 0.3, 0.5,
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1, 0.7, 0.5, 0.9, 0.5,
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0.0
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};
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float const hline3[] = {
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1, 0.1, 0, 0.15, 0,
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1, 0.475, 0, 0.525, 0,
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1, 0.85, 0, 0.9, 0,
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0.0
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};
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float const dline3[] = {
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1, 0.1, 0.1, 0.15, 0.15,
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1, 0.475, 0.475, 0.525, 0.525,
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1, 0.85, 0.85, 0.9, 0.9,
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0.0
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};
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float const hlinesmall[] = {
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1, 0.4, 0.5, 0.6, 0.5,
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0.0
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};
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float const vert[] = {
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1, 0.5, 0.05, 0.5, 0.95,
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0.0
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};
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float const Vert[] = {
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1, 0.3, 0.05, 0.3, 0.95,
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1, 0.7, 0.05, 0.7, 0.95,
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0.0
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};
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float const tilde[] = {
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2.0, 4,
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0.05, 0.8, 0.25, 0.2, 0.75, 0.8, 0.95, 0.2,
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0.0
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};
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struct math_deco_struct {
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int code;
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float const * data;
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int angle;
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};
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math_deco_struct math_deco_table[] = {
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// Decorations
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{ LM_widehat, &angle[0], 3 },
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{ LM_widetilde, &tilde[0], 0 },
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{ LM_underline, &hline[0], 0 },
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{ LM_overline, &hline[0], 0 },
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{ LM_underbrace, &brace[0], 1 },
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{ LM_overbrace, &brace[0], 3 },
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{ LM_overleftarrow, &arrow[0], 1 },
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{ LM_overightarrow, &arrow[0], 3 },
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// Delimiters
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{ '(', &parenth[0], 0 },
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{ ')', &parenth[0], 2 },
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{ '{', &brace[0], 0 },
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{ '}', &brace[0], 2 },
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{ '[', &brack[0], 0 },
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{ ']', &brack[0], 2 },
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{ '|', &vert[0], 0 },
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{ '/', &slash[0], 0 },
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{ LM_Vert, &Vert[0], 0 },
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{ '\\', &slash[0], 1 },
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{ LM_langle, &angle[0], 0 },
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{ LM_lceil, &corner[0], 0 },
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{ LM_lfloor, &corner[0], 1 },
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{ LM_rangle, &angle[0], 2 },
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{ LM_rceil, &corner[0], 3 },
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{ LM_rfloor, &corner[0], 2 },
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{ LM_downarrow, &arrow[0], 2 },
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{ LM_Downarrow, &Arrow[0], 2 },
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{ LM_uparrow, &arrow[0], 0 },
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{ LM_Uparrow, &Arrow[0], 0 },
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{ LM_updownarrow, &udarrow[0], 0 },
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{ LM_Updownarrow, &Udarrow[0], 0 },
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// Accents
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{ LM_ddot, &hline2[0], 0 },
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{ LM_hat, &angle[0], 3 },
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{ LM_grave, &slash[0], 1 },
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{ LM_acute, &slash[0], 0 },
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{ LM_tilde, &tilde[0], 0 },
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{ LM_bar, &hline[0], 0 },
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{ LM_dot, &hlinesmall[0], 0 },
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{ LM_check, &angle[0], 1 },
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{ LM_breve, &parenth[0], 1 },
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{ LM_vec, &arrow[0], 3 },
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{ LM_not, &slash[0], 0 },
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// Dots
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{ LM_ldots, &hline3[0], 0 },
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{ LM_cdots, &hline3[0], 0 },
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{ LM_vdots, &hline3[0], 1 },
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{ LM_ddots, &dline3[0], 0 }
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};
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struct math_deco_compare {
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/// for use by sort and lower_bound
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inline
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int operator()(math_deco_struct const & a,
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math_deco_struct const & b) const {
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return a.code < b.code;
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}
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};
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int const math_deco_table_size =
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sizeof(math_deco_table) /sizeof(math_deco_struct);
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class init_deco_table {
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public:
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init_deco_table() {
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if (!init) {
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sort(math_deco_table,
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math_deco_table + math_deco_table_size,
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math_deco_compare());
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init_deco_table::init = true;
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}
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}
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private:
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static bool init;
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};
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bool init_deco_table::init = false;
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static init_deco_table idt;
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} // namespace anon
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void mathed_char_dim(MathTextCodes type, MathStyles size, unsigned char c,
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int & asc, int & des, int & wid)
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{
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LyXFont const font = WhichFont(type, size);
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des = lyxfont::descent(c, font);
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asc = lyxfont::ascent(c, font);
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wid = mathed_char_width(type, size, c);
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}
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int mathed_char_height(MathTextCodes type, MathStyles size, unsigned char c,
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int & asc, int & des)
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{
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LyXFont const font = WhichFont(type, size);
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des = lyxfont::descent(c, font);
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asc = lyxfont::ascent(c, font);
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return asc + des;
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}
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int mathed_char_height(MathTextCodes type, MathStyles size, unsigned char c)
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{
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int asc;
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int des;
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return mathed_char_height(type, size, c, asc, des);
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}
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int mathed_char_ascent(MathTextCodes type, MathStyles size, unsigned char c)
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{
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LyXFont const font = WhichFont(type, size);
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return lyxfont::ascent(c, font);
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}
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int mathed_char_descent(MathTextCodes type, MathStyles size, unsigned char c)
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{
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LyXFont const font = WhichFont(type, size);
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return lyxfont::descent(c, font);
|
|
}
|
|
|
|
|
|
|
|
int mathed_char_width(MathTextCodes type, MathStyles size, unsigned char c)
|
|
{
|
|
LyXFont const font = WhichFont(type, size);
|
|
if (type == LM_TC_BOP)
|
|
return lyxfont::width(c, font) + 2 * lyxfont::width(' ', font);
|
|
else
|
|
return lyxfont::width(c, font);
|
|
}
|
|
|
|
|
|
void mathed_string_dim(MathTextCodes type, MathStyles size, string const & s,
|
|
int & asc, int & des, int & wid)
|
|
{
|
|
mathed_string_height(type, size, s, asc, des);
|
|
wid = mathed_string_width(type, size, s);
|
|
}
|
|
|
|
int mathed_string_height(MathTextCodes type, MathStyles size, string const & s,
|
|
int & asc, int & des)
|
|
{
|
|
LyXFont const font = WhichFont(type, size);
|
|
asc = des = 0;
|
|
for (string::const_iterator it = s.begin(); it != s.end(); ++it) {
|
|
des = max(des, lyxfont::descent(*it, font));
|
|
asc = max(asc, lyxfont::ascent(*it, font));
|
|
}
|
|
return asc + des;
|
|
}
|
|
|
|
|
|
int mathed_string_width(MathTextCodes type, MathStyles size, string const & s)
|
|
{
|
|
return lyxfont::width(s, WhichFont(type, size));
|
|
}
|
|
|
|
|
|
namespace {
|
|
|
|
math_deco_struct const * search_deco(int code)
|
|
{
|
|
math_deco_struct search_elem = { code, 0, 0 };
|
|
|
|
math_deco_struct const * res =
|
|
lower_bound(math_deco_table,
|
|
math_deco_table + math_deco_table_size,
|
|
search_elem, math_deco_compare());
|
|
if (res != math_deco_table + math_deco_table_size &&
|
|
res->code == code)
|
|
return res;
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
void mathed_draw_deco(Painter & pain, int x, int y, int w, int h,
|
|
latexkeys const * l)
|
|
{
|
|
Matrix mt;
|
|
Matrix sqmt;
|
|
int i = 0;
|
|
string name = l->name;
|
|
int code = (name.size() > 1) ? l->id : name[0];
|
|
|
|
math_deco_struct const * mds = search_deco(code);
|
|
if (!mds) {
|
|
lyxerr << "Deco was not found. Programming error?\n";
|
|
lyxerr << "name: '" << l->name << "', code: " << code << "\n";
|
|
return;
|
|
}
|
|
|
|
int const r = mds->angle;
|
|
float const * d = mds->data;
|
|
|
|
if (h > 70 && (mds->code == int('(') || mds->code == int(')')))
|
|
d = parenthHigh;
|
|
|
|
mt.rotate(r);
|
|
mt.escalate(w, h);
|
|
|
|
int const n = (w < h) ? w : h;
|
|
|
|
sqmt.rotate(r);
|
|
sqmt.escalate(n, n);
|
|
|
|
if (r > 0 && r < 3)
|
|
y += h;
|
|
|
|
if (r >= 2)
|
|
x += w;
|
|
|
|
do {
|
|
float xx;
|
|
float yy;
|
|
float x2;
|
|
float y2;
|
|
|
|
code = int(d[i++]);
|
|
switch (code) {
|
|
case 0: break;
|
|
case 1:
|
|
case 3:
|
|
{
|
|
xx = d[i++]; yy = d[i++];
|
|
x2 = d[i++]; y2 = d[i++];
|
|
if (code == 3)
|
|
sqmt.transform(xx, yy, xx, yy);
|
|
else
|
|
mt.transform(xx, yy, xx, yy);
|
|
mt.transform(x2, y2, x2, y2);
|
|
pain.line(x + int(xx), y + int(yy),
|
|
x + int(x2), y + int(y2),
|
|
LColor::mathline);
|
|
break;
|
|
}
|
|
case 2:
|
|
case 4:
|
|
{
|
|
int xp[32];
|
|
int yp[32];
|
|
int const n = int(d[i++]);
|
|
for (int j = 0; j < n; ++j) {
|
|
xx = d[i++]; yy = d[i++];
|
|
// lyxerr << " " << xx << " " << yy << " ";
|
|
if (code == 4)
|
|
sqmt.transform(xx, yy, xx, yy);
|
|
else
|
|
mt.transform(xx, yy, xx, yy);
|
|
xp[j] = x + int(xx);
|
|
yp[j] = y + int(yy);
|
|
// lyxerr << "P[" << j " " << xx << " " << yy << " " << x << " " << y << "]";
|
|
}
|
|
pain.lines(xp, yp, n, LColor::mathline);
|
|
}
|
|
}
|
|
} while (code);
|
|
}
|
|
|
|
|
|
bool isBinaryOp(char c)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
// In a near future maybe we use a better fonts renderer
|
|
void drawStr(Painter & pain, MathTextCodes type, MathStyles siz,
|
|
int x, int y, string const & s)
|
|
{
|
|
pain.text(x, y, s, WhichFont(type, siz));
|
|
}
|
|
|
|
|
|
void drawChar
|
|
(Painter & pain, MathTextCodes type, MathStyles siz, int x, int y, char c)
|
|
{
|
|
string s;
|
|
if (type == LM_TC_BOP)
|
|
s += ' ';
|
|
s += c;
|
|
if (type == LM_TC_BOP)
|
|
s += ' ';
|
|
drawStr(pain, type, siz, x, y, s);
|
|
}
|
|
|
|
// decrease math size for super- and subscripts
|
|
MathStyles smallerStyleScript(MathStyles st)
|
|
{
|
|
switch (st) {
|
|
case LM_ST_DISPLAY:
|
|
case LM_ST_TEXT: st = LM_ST_SCRIPT; break;
|
|
default: st = LM_ST_SCRIPTSCRIPT;
|
|
}
|
|
return st;
|
|
}
|
|
|
|
// decrease math size for fractions
|
|
MathStyles smallerStyleFrac(MathStyles st)
|
|
{
|
|
switch (st) {
|
|
case LM_ST_DISPLAY: st = LM_ST_TEXT; break;
|
|
case LM_ST_TEXT: st = LM_ST_SCRIPT; break;
|
|
default: st = LM_ST_SCRIPTSCRIPT;
|
|
}
|
|
return st;
|
|
}
|
|
|
|
|
|
void math_font_max_dim(MathTextCodes code, MathStyles siz, int & asc, int & des)
|
|
{
|
|
LyXFont font = WhichFont(code, siz);
|
|
asc = lyxfont::maxAscent(font);
|
|
des = lyxfont::maxDescent(font);
|
|
}
|
|
|
|
char const * latex_mathspace[] = {
|
|
"!", ",", ":", ";", "quad", "qquad"
|
|
};
|