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8f98ec35e4
http://bugzilla.lyx.org/show_bug.cgi?id=2900 The only drawback is that it requires about 20Mo extra-memory when loading the UserGuide. If it turns out to be too much, we can switch to a QHash based solution instead of a table. * dimension.[Ch]: - Dimension(LyXFont const, char_typec): new ctor - set(LyXFont const & font, char_type c): new method. * frontends/FontMetrics.h: - width(char_type): is now a pure virtual method. * GuiFontMetrics: - CharMetrics: new structure; - the metrics cache now also cache ascent and descent. This is especially useful for mathed. * MathSupport.[Ch]: - mathed_char_dim(): deleted. We now use Dimension::set() directly instead. * rowpainter.C: fixe empty space. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16124 a592a061-630c-0410-9148-cb99ea01b6c8
706 lines
16 KiB
C
706 lines
16 KiB
C
/**
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* \file MathSupport.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Alejandro Aguilar Sierra
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* \author André Pönitz
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "MathSupport.h"
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#include "MathData.h"
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#include "InsetMath.h"
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#include "MathStream.h"
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#include "MathParser.h"
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#include "debug.h"
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#include "LColor.h"
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#include "frontends/FontLoader.h"
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#include "frontends/FontMetrics.h"
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#include "frontends/Painter.h"
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#include <map>
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#include <sstream>
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namespace lyx {
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using frontend::Painter;
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using std::max;
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using std::endl;
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using std::vector;
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///
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class Matrix {
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public:
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///
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Matrix(int, double, double);
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///
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void transform(double &, double &);
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private:
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///
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double m_[2][2];
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};
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Matrix::Matrix(int code, double x, double y)
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{
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double const cs = (code & 1) ? 0 : (1 - code);
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double const sn = (code & 1) ? (2 - code) : 0;
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m_[0][0] = cs * x;
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m_[0][1] = sn * x;
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m_[1][0] = -sn * y;
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m_[1][1] = cs * y;
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}
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void Matrix::transform(double & x, double & y)
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{
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double xx = m_[0][0] * x + m_[0][1] * y;
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double yy = m_[1][0] * x + m_[1][1] * y;
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x = xx;
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y = yy;
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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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double const parenthHigh[] = {
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2, 13,
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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
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};
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double const parenth[] = {
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2, 13,
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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
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};
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double const brace[] = {
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2, 21,
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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
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};
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double 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
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};
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double 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
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};
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double 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
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};
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double 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
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};
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double const brack[] = {
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2, 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
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};
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double const corner[] = {
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2, 3,
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0.95, 0.05, 0.05, 0.05, 0.05, 0.95,
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0
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};
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double const angle[] = {
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2, 3,
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1, 0, 0.05, 0.5, 1, 1,
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0
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};
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double const slash[] = {
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1, 0.95, 0.05, 0.05, 0.95,
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0
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};
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double const hline[] = {
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1, 0.00, 0.5, 1.0, 0.5,
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0
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};
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double const ddot[] = {
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1, 0.2, 0.5, 0.3, 0.5,
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1, 0.7, 0.5, 0.8, 0.5,
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0
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};
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double const dddot[] = {
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1, 0.1, 0.5, 0.2, 0.5,
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1, 0.45, 0.5, 0.55, 0.5,
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1, 0.8, 0.5, 0.9, 0.5,
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0
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};
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double 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
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};
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double 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
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};
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double const hlinesmall[] = {
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1, 0.4, 0.5, 0.6, 0.5,
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0
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};
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double const ring[] = {
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2, 5,
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0.5, 0.8, 0.8, 0.5, 0.5, 0.2, 0.2, 0.5, 0.5, 0.8,
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0
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};
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double const vert[] = {
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1, 0.5, 0.05, 0.5, 0.95,
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0
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};
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double 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
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};
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double const tilde[] = {
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2, 4,
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0.00, 0.8, 0.25, 0.2, 0.75, 0.8, 1.00, 0.2,
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0
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};
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struct deco_struct {
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double const * data;
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int angle;
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};
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struct named_deco_struct {
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char const * name;
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double const * data;
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int angle;
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};
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named_deco_struct deco_table[] = {
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// Decorations
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{"widehat", angle, 3 },
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{"widetilde", tilde, 0 },
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{"underbar", hline, 0 },
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{"underline", hline, 0 },
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{"overline", hline, 0 },
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{"underbrace", brace, 1 },
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{"overbrace", brace, 3 },
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{"overleftarrow", arrow, 1 },
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{"overrightarrow", arrow, 3 },
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{"overleftrightarrow", udarrow, 1 },
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{"xleftarrow", arrow, 1 },
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{"xrightarrow", arrow, 3 },
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{"underleftarrow", arrow, 1 },
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{"underrightarrow", arrow, 3 },
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{"underleftrightarrow", udarrow, 1 },
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// Delimiters
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{"(", parenth, 0 },
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{")", parenth, 2 },
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{"{", brace, 0 },
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{"}", brace, 2 },
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{"lbrace", brace, 0 },
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{"rbrace", brace, 2 },
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{"[", brack, 0 },
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{"]", brack, 2 },
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{"|", vert, 0 },
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{"/", slash, 0 },
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{"vert", vert, 0 },
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{"Vert", Vert, 0 },
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{"'", slash, 1 },
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{"backslash", slash, 1 },
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{"langle", angle, 0 },
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{"lceil", corner, 0 },
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{"lfloor", corner, 1 },
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{"rangle", angle, 2 },
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{"rceil", corner, 3 },
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{"rfloor", corner, 2 },
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{"downarrow", arrow, 2 },
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{"Downarrow", Arrow, 2 },
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{"uparrow", arrow, 0 },
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{"Uparrow", Arrow, 0 },
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{"updownarrow", udarrow, 0 },
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{"Updownarrow", Udarrow, 0 },
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// Accents
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{"ddot", ddot, 0 },
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{"dddot", dddot, 0 },
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{"hat", angle, 3 },
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{"grave", slash, 1 },
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{"acute", slash, 0 },
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{"tilde", tilde, 0 },
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{"bar", hline, 0 },
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{"dot", hlinesmall, 0 },
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{"check", angle, 1 },
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{"breve", parenth, 1 },
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{"vec", arrow, 3 },
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{"mathring", ring, 0 },
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// Dots
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{"dots", hline3, 0 },
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{"ldots", hline3, 0 },
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{"cdots", hline3, 0 },
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{"vdots", hline3, 1 },
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{"ddots", dline3, 0 },
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{"dotsb", hline3, 0 },
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{"dotsc", hline3, 0 },
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{"dotsi", hline3, 0 },
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{"dotsm", hline3, 0 },
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{"dotso", hline3, 0 }
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};
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std::map<docstring, deco_struct> deco_list;
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// sort the table on startup
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class init_deco_table {
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public:
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init_deco_table() {
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unsigned const n = sizeof(deco_table) / sizeof(deco_table[0]);
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for (named_deco_struct * p = deco_table; p != deco_table + n; ++p) {
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deco_struct d;
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d.data = p->data;
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d.angle = p->angle;
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deco_list[from_ascii(p->name)] = d;
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}
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}
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};
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static init_deco_table dummy;
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deco_struct const * search_deco(docstring const & name)
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{
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std::map<docstring, deco_struct>::const_iterator p = deco_list.find(name);
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return p == deco_list.end() ? 0 : &(p->second);
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}
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} // namespace anon
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int mathed_char_width(LyXFont const & font, char_type c)
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{
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return theFontMetrics(font).width(c);
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}
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void mathed_string_dim(LyXFont const & font,
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docstring const & s,
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Dimension & dim)
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{
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frontend::FontMetrics const & fm = theFontMetrics(font);
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dim.asc = 0;
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dim.des = 0;
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for (docstring::const_iterator it = s.begin();
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it != s.end();
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++it) {
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dim.asc = max(dim.asc, fm.ascent(*it));
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dim.des = max(dim.des, fm.descent(*it));
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}
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dim.wid = fm.width(&s[0], s.size());
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}
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int mathed_string_width(LyXFont const & font, docstring const & s)
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{
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return theFontMetrics(font).width(s);
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}
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void mathed_draw_deco(PainterInfo & pi, int x, int y, int w, int h,
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docstring const & name)
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{
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if (name == ".") {
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pi.pain.line(x + w/2, y, x + w/2, y + h,
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LColor::cursor, Painter::line_onoffdash);
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return;
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}
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deco_struct const * mds = search_deco(name);
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if (!mds) {
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lyxerr << "Deco was not found. Programming error?" << endl;
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lyxerr << "name: '" << to_utf8(name) << "'" << endl;
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return;
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}
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int const n = (w < h) ? w : h;
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int const r = mds->angle;
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double const * d = mds->data;
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if (h > 70 && (name == "(" || name == ")"))
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d = parenthHigh;
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Matrix mt(r, w, h);
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Matrix sqmt(r, n, n);
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if (r > 0 && r < 3)
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y += h;
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if (r >= 2)
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x += w;
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for (int i = 0; d[i]; ) {
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int code = int(d[i++]);
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if (code & 1) { // code == 1 || code == 3
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double xx = d[i++];
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double yy = d[i++];
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double x2 = d[i++];
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double y2 = d[i++];
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if (code == 3)
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sqmt.transform(xx, yy);
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else
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mt.transform(xx, yy);
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mt.transform(x2, y2);
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pi.pain.line(
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int(x + xx + 0.5), int(y + yy + 0.5),
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int(x + x2 + 0.5), int(y + y2 + 0.5),
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LColor::math);
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} else {
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int xp[32];
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int yp[32];
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int const n = int(d[i++]);
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for (int j = 0; j < n; ++j) {
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double xx = d[i++];
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double yy = d[i++];
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// lyxerr << ' ' << xx << ' ' << yy << ' ';
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if (code == 4)
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sqmt.transform(xx, yy);
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else
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mt.transform(xx, yy);
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xp[j] = int(x + xx + 0.5);
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yp[j] = int(y + yy + 0.5);
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// lyxerr << "P[" << j ' ' << xx << ' ' << yy << ' ' << x << ' ' << y << ']';
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}
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pi.pain.lines(xp, yp, n, LColor::math);
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}
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}
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}
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void drawStrRed(PainterInfo & pi, int x, int y, docstring const & str)
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{
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LyXFont f = pi.base.font;
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f.setColor(LColor::latex);
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pi.pain.text(x, y, str, f);
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}
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void drawStrBlack(PainterInfo & pi, int x, int y, docstring const & str)
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{
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LyXFont f = pi.base.font;
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f.setColor(LColor::foreground);
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pi.pain.text(x, y, str, f);
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}
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void math_font_max_dim(LyXFont const & font, int & asc, int & des)
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{
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frontend::FontMetrics const & fm = theFontMetrics(font);
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asc = fm.maxAscent();
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des = fm.maxDescent();
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}
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struct fontinfo {
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std::string cmd_;
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LyXFont::FONT_FAMILY family_;
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LyXFont::FONT_SERIES series_;
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LyXFont::FONT_SHAPE shape_;
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LColor::color color_;
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};
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LyXFont::FONT_FAMILY const inh_family = LyXFont::INHERIT_FAMILY;
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LyXFont::FONT_SERIES const inh_series = LyXFont::INHERIT_SERIES;
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LyXFont::FONT_SHAPE const inh_shape = LyXFont::INHERIT_SHAPE;
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// mathnormal should be the first, otherwise the fallback further down
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// does not work
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fontinfo fontinfos[] = {
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// math fonts
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{"mathnormal", LyXFont::ROMAN_FAMILY, LyXFont::MEDIUM_SERIES,
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LyXFont::ITALIC_SHAPE, LColor::math},
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{"mathbf", inh_family, LyXFont::BOLD_SERIES,
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inh_shape, LColor::math},
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{"mathcal", LyXFont::CMSY_FAMILY, inh_series,
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inh_shape, LColor::math},
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{"mathfrak", LyXFont::EUFRAK_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"mathrm", LyXFont::ROMAN_FAMILY, inh_series,
|
|
LyXFont::UP_SHAPE, LColor::math},
|
|
{"mathsf", LyXFont::SANS_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"mathbb", LyXFont::MSB_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"mathtt", LyXFont::TYPEWRITER_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"mathit", inh_family, inh_series,
|
|
LyXFont::ITALIC_SHAPE, LColor::math},
|
|
{"cmex", LyXFont::CMEX_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"cmm", LyXFont::CMM_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"cmr", LyXFont::CMR_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"cmsy", LyXFont::CMSY_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"eufrak", LyXFont::EUFRAK_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"msa", LyXFont::MSA_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"msb", LyXFont::MSB_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"wasy", LyXFont::WASY_FAMILY, inh_series,
|
|
inh_shape, LColor::none},
|
|
{"esint", LyXFont::ESINT_FAMILY, inh_series,
|
|
inh_shape, LColor::none},
|
|
|
|
// Text fonts
|
|
{"text", inh_family, inh_series,
|
|
inh_shape, LColor::foreground},
|
|
{"textbf", inh_family, LyXFont::BOLD_SERIES,
|
|
inh_shape, LColor::foreground},
|
|
{"textit", inh_family, inh_series,
|
|
LyXFont::ITALIC_SHAPE, LColor::foreground},
|
|
{"textmd", inh_family, LyXFont::MEDIUM_SERIES,
|
|
inh_shape, LColor::foreground},
|
|
{"textnormal", inh_family, inh_series,
|
|
LyXFont::UP_SHAPE, LColor::foreground},
|
|
{"textrm", LyXFont::ROMAN_FAMILY,
|
|
inh_series, LyXFont::UP_SHAPE,LColor::foreground},
|
|
{"textsc", inh_family, inh_series,
|
|
LyXFont::SMALLCAPS_SHAPE, LColor::foreground},
|
|
{"textsf", LyXFont::SANS_FAMILY, inh_series,
|
|
inh_shape, LColor::foreground},
|
|
{"textsl", inh_family, inh_series,
|
|
LyXFont::SLANTED_SHAPE, LColor::foreground},
|
|
{"texttt", LyXFont::TYPEWRITER_FAMILY, inh_series,
|
|
inh_shape, LColor::foreground},
|
|
{"textup", inh_family, inh_series,
|
|
LyXFont::UP_SHAPE, LColor::foreground},
|
|
|
|
// TIPA support
|
|
{"textipa", inh_family, inh_series,
|
|
inh_shape, LColor::foreground},
|
|
|
|
// LyX internal usage
|
|
{"lyxtex", inh_family, inh_series,
|
|
LyXFont::UP_SHAPE, LColor::latex},
|
|
{"lyxsymbol", LyXFont::SYMBOL_FAMILY, inh_series,
|
|
inh_shape, LColor::math},
|
|
{"lyxboldsymbol", LyXFont::SYMBOL_FAMILY, LyXFont::BOLD_SERIES,
|
|
inh_shape, LColor::math},
|
|
{"lyxblacktext", LyXFont::ROMAN_FAMILY, LyXFont::MEDIUM_SERIES,
|
|
LyXFont::UP_SHAPE, LColor::foreground},
|
|
{"lyxnochange", inh_family, inh_series,
|
|
inh_shape, LColor::foreground},
|
|
{"lyxfakebb", LyXFont::TYPEWRITER_FAMILY, LyXFont::BOLD_SERIES,
|
|
LyXFont::UP_SHAPE, LColor::math},
|
|
{"lyxfakecal", LyXFont::SANS_FAMILY, LyXFont::MEDIUM_SERIES,
|
|
LyXFont::ITALIC_SHAPE, LColor::math},
|
|
{"lyxfakefrak", LyXFont::ROMAN_FAMILY, LyXFont::BOLD_SERIES,
|
|
LyXFont::ITALIC_SHAPE, LColor::math}
|
|
};
|
|
|
|
|
|
fontinfo * lookupFont(docstring const & name0)
|
|
{
|
|
//lyxerr << "searching font '" << name << "'" << endl;
|
|
int const n = sizeof(fontinfos) / sizeof(fontinfo);
|
|
std::string name = to_utf8(name0);
|
|
for (int i = 0; i < n; ++i)
|
|
if (fontinfos[i].cmd_ == name) {
|
|
//lyxerr << "found '" << i << "'" << endl;
|
|
return fontinfos + i;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
fontinfo * searchFont(docstring const & name)
|
|
{
|
|
fontinfo * f = lookupFont(name);
|
|
return f ? f : fontinfos;
|
|
// this should be mathnormal
|
|
//return searchFont("mathnormal");
|
|
}
|
|
|
|
|
|
bool isFontName(docstring const & name)
|
|
{
|
|
return lookupFont(name);
|
|
}
|
|
|
|
|
|
LyXFont getFont(docstring const & name)
|
|
{
|
|
LyXFont font;
|
|
augmentFont(font, name);
|
|
return font;
|
|
}
|
|
|
|
|
|
void fakeFont(docstring const & orig, docstring const & fake)
|
|
{
|
|
fontinfo * forig = searchFont(orig);
|
|
fontinfo * ffake = searchFont(fake);
|
|
if (forig && ffake) {
|
|
forig->family_ = ffake->family_;
|
|
forig->series_ = ffake->series_;
|
|
forig->shape_ = ffake->shape_;
|
|
forig->color_ = ffake->color_;
|
|
} else {
|
|
lyxerr << "Can't fake font '" << to_utf8(orig) << "' with '"
|
|
<< to_utf8(fake) << "'" << endl;
|
|
}
|
|
}
|
|
|
|
|
|
void augmentFont(LyXFont & font, docstring const & name)
|
|
{
|
|
static bool initialized = false;
|
|
if (!initialized) {
|
|
initialized = true;
|
|
// fake fonts if necessary
|
|
if (!theFontLoader().available(getFont(from_ascii("mathfrak"))))
|
|
fakeFont(from_ascii("mathfrak"), from_ascii("lyxfakefrak"));
|
|
if (!theFontLoader().available(getFont(from_ascii("mathcal"))))
|
|
fakeFont(from_ascii("mathcal"), from_ascii("lyxfakecal"));
|
|
}
|
|
fontinfo * info = searchFont(name);
|
|
if (info->family_ != inh_family)
|
|
font.setFamily(info->family_);
|
|
if (info->series_ != inh_series)
|
|
font.setSeries(info->series_);
|
|
if (info->shape_ != inh_shape)
|
|
font.setShape(info->shape_);
|
|
if (info->color_ != LColor::none)
|
|
font.setColor(info->color_);
|
|
}
|
|
|
|
|
|
docstring asString(MathArray const & ar)
|
|
{
|
|
odocstringstream os;
|
|
WriteStream ws(os);
|
|
ws << ar;
|
|
return os.str();
|
|
}
|
|
|
|
|
|
void asArray(docstring const & str, MathArray & ar)
|
|
{
|
|
mathed_parse_cell(ar, str);
|
|
}
|
|
|
|
|
|
docstring asString(InsetMath const & inset)
|
|
{
|
|
odocstringstream os;
|
|
WriteStream ws(os);
|
|
inset.write(ws);
|
|
return os.str();
|
|
}
|
|
|
|
|
|
docstring asString(MathAtom const & at)
|
|
{
|
|
odocstringstream os;
|
|
WriteStream ws(os);
|
|
at->write(ws);
|
|
return os.str();
|
|
}
|
|
|
|
|
|
} // namespace lyx
|