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962 lines
22 KiB
C++
962 lines
22 KiB
C++
/**
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* \file MathSupport.cpp
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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 "InsetMathFont.h"
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#include "InsetMathSymbol.h"
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#include "MathData.h"
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#include "MathParser.h"
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#include "MathStream.h"
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#include "MetricsInfo.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 "support/debug.h"
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#include "support/docstream.h"
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#include "support/lyxlib.h"
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#include <map>
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#include <algorithm>
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using namespace std;
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namespace lyx {
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using frontend::Painter;
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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 mapsto[] = {
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2, 3,
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0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
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1, 0.015, 0.475, 0.945, 0.475,
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1, 0.015, 0.015, 0.015, 0.985,
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0
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};
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double const lhook[] = {
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2, 3,
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0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
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1, 0.015, 0.475, 0.7, 0.475,
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2, 5,
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0.7, 0.015, 0.825, 0.15, 0.985, 0.25,
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0.825, 0.35, 0.7, 0.475,
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0
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};
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double const rhook[] = {
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2, 3,
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0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
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1, 0.3, 0.475, 0.985, 0.475,
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2, 5,
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0.3, 0.015, 0.175, 0.15, 0.05, 0.25,
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0.175, 0.35, 0.3, 0.475,
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0
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};
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double const LRArrow[] = {
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2, 3,
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0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
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2, 3,
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0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
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1, 0.2, 0.8, 0.8, 0.8,
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1, 0.2, 0.2, 0.8, 0.2,
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0
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};
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double const LArrow[] = {
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2, 3,
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0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
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1, 0.2, 0.8, 0.985, 0.8,
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1, 0.2, 0.2, 0.985, 0.2,
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0
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};
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double const lharpoondown[] = {
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2, 2,
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0.015, 0.5, 0.25, 0.985,
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1, 0.02, 0.475, 0.985, 0.475,
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0
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};
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double const lharpoonup[] = {
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2, 2,
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0.25, 0.015, 0.015, 0.5,
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1, 0.02, 0.525, 0.985, 0.525,
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0
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};
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double const lrharpoons[] = {
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2, 2,
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0.25, 0.015, 0.015, 0.225,
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1, 0.02, 0.23, 0.985, 0.23,
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2, 2,
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0.75, 0.985, 0.985, 0.775,
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1, 0.02, 0.7, 0.980, 0.7,
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0
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};
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double const rlharpoons[] = {
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2, 2,
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0.75, 0.015, 0.985, 0.225,
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1, 0.02, 0.23, 0.985, 0.23,
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2, 2,
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0.25, 0.985, 0.015, 0.775,
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1, 0.02, 0.7, 0.980, 0.7,
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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, 0.1, 0.5, 0.9,
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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 dbrack[] = {
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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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2, 2,
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0.50, 0.05, 0.50, 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 ddddot[] = {
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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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1, 1.15, 0.5, 1.25, 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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{"xhookleftarrow", lhook, 0 },
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{"xhookrightarrow", rhook, 0 },
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{"xleftarrow", arrow, 1 },
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{"xLeftarrow", LArrow, 0 },
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{"xleftharpoondown", lharpoondown, 0 },
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{"xleftharpoonup", lharpoonup, 0 },
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{"xleftrightharpoons", lrharpoons, 0 },
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{"xleftrightarrow", udarrow, 1 },
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{"xLeftrightarrow", LRArrow, 0 },
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{"xmapsto", mapsto, 0 },
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{"xrightarrow", arrow, 3 },
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{"xRightarrow", LArrow, 2 },
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{"xrightharpoondown", lharpoonup, 2 },
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{"xrightharpoonup", lharpoondown, 2 },
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{"xrightleftharpoons", rlharpoons, 0 },
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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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{"undertilde", tilde, 0 },
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{"utilde", tilde, 0 },
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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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{"llbracket", dbrack, 0 },
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{"rrbracket", dbrack, 2 },
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{"|", vert, 0 },
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{"/", slash, 0 },
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{"slash", slash, 0 },
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{"vert", vert, 0 },
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{"lvert", vert, 0 },
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{"rvert", vert, 0 },
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{"Vert", Vert, 0 },
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{"lVert", Vert, 0 },
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{"rVert", Vert, 0 },
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{"'", slash, 1 },
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{"<", angle, 0 },
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{">", angle, 2 },
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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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{"ddddot", ddddot, 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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{"adots", dline3, 1 },
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{"iddots", dline3, 1 },
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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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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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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_font_em(FontInfo const & font)
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{
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return theFontMetrics(font).em();
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}
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|
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/* The math units. Quoting TeX by Topic, p.205:
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*
|
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* Spacing around mathematical objects is measured in mu units. A mu
|
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* is 1/18th part of \fontdimen6 of the font in family 2 in the
|
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* current style, the ‘quad’ value of the symbol font.
|
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*
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* A \thickmuskip (default value in plain TeX: 5mu plus 5mu) is
|
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* inserted around (binary) relations, except where these are preceded
|
||
* or followed by other relations or punctuation, and except if they
|
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* follow an open, or precede a close symbol.
|
||
*
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* A \medmuskip (default value in plain TeX: 4mu plus 2mu minus 4mu)
|
||
* is put around binary operators.
|
||
*
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* A \thinmuskip (default value in plain TeX: 3mu) follows after
|
||
* punctuation, and is put around inner objects, except where these
|
||
* are followed by a close or preceded by an open symbol, and except
|
||
* if the other object is a large operator or a binary relation.
|
||
*/
|
||
|
||
int mathed_thinmuskip(FontInfo font)
|
||
{
|
||
font.setFamily(SYMBOL_FAMILY);
|
||
return support::iround(3.0 / 18 * theFontMetrics(font).em());
|
||
}
|
||
|
||
|
||
int mathed_medmuskip(FontInfo font)
|
||
{
|
||
font.setFamily(SYMBOL_FAMILY);
|
||
return support::iround(4.0 / 18 * theFontMetrics(font).em());
|
||
}
|
||
|
||
|
||
int mathed_thickmuskip(FontInfo font)
|
||
{
|
||
font.setFamily(SYMBOL_FAMILY);
|
||
return support::iround(5.0 / 18 * theFontMetrics(font).em());
|
||
}
|
||
|
||
|
||
int mathed_char_width(FontInfo const & font, char_type c)
|
||
{
|
||
return theFontMetrics(font).width(c);
|
||
}
|
||
|
||
|
||
int mathed_char_kerning(FontInfo const & font, char_type c)
|
||
{
|
||
frontend::FontMetrics const & fm = theFontMetrics(font);
|
||
return fm.rbearing(c) - fm.width(c);
|
||
}
|
||
|
||
|
||
void mathed_string_dim(FontInfo const & font,
|
||
docstring const & s,
|
||
Dimension & dim)
|
||
{
|
||
frontend::FontMetrics const & fm = theFontMetrics(font);
|
||
dim.asc = 0;
|
||
dim.des = 0;
|
||
for (docstring::const_iterator it = s.begin();
|
||
it != s.end();
|
||
++it) {
|
||
dim.asc = max(dim.asc, fm.ascent(*it));
|
||
dim.des = max(dim.des, fm.descent(*it));
|
||
}
|
||
dim.wid = fm.width(s);
|
||
}
|
||
|
||
|
||
int mathed_string_width(FontInfo const & font, docstring const & s)
|
||
{
|
||
return theFontMetrics(font).width(s);
|
||
}
|
||
|
||
|
||
void mathed_draw_deco(PainterInfo & pi, int x, int y, int w, int h,
|
||
docstring const & name)
|
||
{
|
||
if (name == ".") {
|
||
pi.pain.line(x + w/2, y, x + w/2, y + h,
|
||
Color_cursor, Painter::line_onoffdash);
|
||
return;
|
||
}
|
||
|
||
deco_struct const * mds = search_deco(name);
|
||
if (!mds) {
|
||
lyxerr << "Deco was not found. Programming error?" << endl;
|
||
lyxerr << "name: '" << to_utf8(name) << "'" << endl;
|
||
return;
|
||
}
|
||
|
||
int const n = (w < h) ? w : h;
|
||
int const r = mds->angle;
|
||
double const * d = mds->data;
|
||
|
||
if (h > 70 && (name == "(" || name == ")"))
|
||
d = parenthHigh;
|
||
|
||
Matrix mt(r, w, h);
|
||
Matrix sqmt(r, n, n);
|
||
|
||
if (r > 0 && r < 3)
|
||
y += h;
|
||
|
||
if (r >= 2)
|
||
x += w;
|
||
|
||
for (int i = 0; d[i]; ) {
|
||
int code = int(d[i++]);
|
||
if (code & 1) { // code == 1 || code == 3
|
||
double xx = d[i++];
|
||
double yy = d[i++];
|
||
double x2 = d[i++];
|
||
double y2 = d[i++];
|
||
if (code == 3)
|
||
sqmt.transform(xx, yy);
|
||
else
|
||
mt.transform(xx, yy);
|
||
mt.transform(x2, y2);
|
||
pi.pain.line(
|
||
int(x + xx + 0.5), int(y + yy + 0.5),
|
||
int(x + x2 + 0.5), int(y + y2 + 0.5),
|
||
pi.base.font.color());
|
||
} else {
|
||
int xp[32];
|
||
int yp[32];
|
||
int const n = int(d[i++]);
|
||
for (int j = 0; j < n; ++j) {
|
||
double xx = d[i++];
|
||
double yy = d[i++];
|
||
// lyxerr << ' ' << xx << ' ' << yy << ' ';
|
||
if (code == 4)
|
||
sqmt.transform(xx, yy);
|
||
else
|
||
mt.transform(xx, yy);
|
||
xp[j] = int(x + xx + 0.5);
|
||
yp[j] = int(y + yy + 0.5);
|
||
// lyxerr << "P[" << j ' ' << xx << ' ' << yy << ' ' << x << ' ' << y << ']';
|
||
}
|
||
pi.pain.lines(xp, yp, n, pi.base.font.color());
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
void metricsStrRedBlack(MetricsInfo & mi, Dimension & dim, docstring const & str)
|
||
{
|
||
FontInfo font = mi.base.font;
|
||
augmentFont(font, from_ascii("mathnormal"));
|
||
mathed_string_dim(font, str, dim);
|
||
}
|
||
|
||
|
||
void drawStrRed(PainterInfo & pi, int x, int y, docstring const & str)
|
||
{
|
||
FontInfo f = pi.base.font;
|
||
augmentFont(f, from_ascii("mathnormal"));
|
||
f.setColor(Color_latex);
|
||
pi.pain.text(x, y, str, f);
|
||
}
|
||
|
||
|
||
void drawStrBlack(PainterInfo & pi, int x, int y, docstring const & str)
|
||
{
|
||
FontInfo f = pi.base.font;
|
||
augmentFont(f, from_ascii("mathnormal"));
|
||
f.setColor(Color_foreground);
|
||
pi.pain.text(x, y, str, f);
|
||
}
|
||
|
||
|
||
void math_font_max_dim(FontInfo const & font, int & asc, int & des)
|
||
{
|
||
frontend::FontMetrics const & fm = theFontMetrics(font);
|
||
asc = fm.maxAscent();
|
||
des = fm.maxDescent();
|
||
}
|
||
|
||
|
||
struct fontinfo {
|
||
string cmd_;
|
||
FontFamily family_;
|
||
FontSeries series_;
|
||
FontShape shape_;
|
||
ColorCode color_;
|
||
};
|
||
|
||
|
||
FontFamily const inh_family = INHERIT_FAMILY;
|
||
FontSeries const inh_series = INHERIT_SERIES;
|
||
FontShape const inh_shape = INHERIT_SHAPE;
|
||
|
||
|
||
// mathnormal should be the first, otherwise the fallback further down
|
||
// does not work
|
||
fontinfo fontinfos[] = {
|
||
// math fonts
|
||
{"mathnormal", ROMAN_FAMILY, MEDIUM_SERIES,
|
||
ITALIC_SHAPE, Color_math},
|
||
{"mathbf", inh_family, BOLD_SERIES,
|
||
inh_shape, Color_math},
|
||
{"mathcal", CMSY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathfrak", EUFRAK_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathrm", ROMAN_FAMILY, inh_series,
|
||
UP_SHAPE, Color_math},
|
||
{"mathsf", SANS_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathbb", MSB_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathtt", TYPEWRITER_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathit", inh_family, inh_series,
|
||
ITALIC_SHAPE, Color_math},
|
||
{"mathscr", RSFS_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmex", CMEX_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmm", CMM_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmr", CMR_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmsy", CMSY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"eufrak", EUFRAK_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"msa", MSA_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"msb", MSB_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"stmry", STMARY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"wasy", WASY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"esint", ESINT_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
|
||
// Text fonts
|
||
{"text", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"textbf", inh_family, BOLD_SERIES,
|
||
inh_shape, Color_foreground},
|
||
{"textit", inh_family, inh_series,
|
||
ITALIC_SHAPE, Color_foreground},
|
||
{"textmd", inh_family, MEDIUM_SERIES,
|
||
inh_shape, Color_foreground},
|
||
{"textnormal", inh_family, inh_series,
|
||
UP_SHAPE, Color_foreground},
|
||
{"textrm", ROMAN_FAMILY,
|
||
inh_series, UP_SHAPE,Color_foreground},
|
||
{"textsc", inh_family, inh_series,
|
||
SMALLCAPS_SHAPE, Color_foreground},
|
||
{"textsf", SANS_FAMILY, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"textsl", inh_family, inh_series,
|
||
SLANTED_SHAPE, Color_foreground},
|
||
{"texttt", TYPEWRITER_FAMILY, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"textup", inh_family, inh_series,
|
||
UP_SHAPE, Color_foreground},
|
||
|
||
// TIPA support
|
||
{"textipa", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
|
||
// mhchem support
|
||
{"ce", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"cf", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
|
||
// LyX internal usage
|
||
{"lyxtex", inh_family, inh_series,
|
||
UP_SHAPE, Color_latex},
|
||
// FIXME: The following two don't work on OS X, since the Symbol font
|
||
// uses a different encoding, and is therefore disabled in
|
||
// FontLoader::available().
|
||
{"lyxsymbol", SYMBOL_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"lyxboldsymbol", SYMBOL_FAMILY, BOLD_SERIES,
|
||
inh_shape, Color_math},
|
||
{"lyxblacktext", ROMAN_FAMILY, MEDIUM_SERIES,
|
||
UP_SHAPE, Color_foreground},
|
||
{"lyxnochange", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"lyxfakebb", TYPEWRITER_FAMILY, BOLD_SERIES,
|
||
UP_SHAPE, Color_math},
|
||
{"lyxfakecal", SANS_FAMILY, MEDIUM_SERIES,
|
||
ITALIC_SHAPE, Color_math},
|
||
{"lyxfakefrak", ROMAN_FAMILY, BOLD_SERIES,
|
||
ITALIC_SHAPE, Color_math}
|
||
};
|
||
|
||
|
||
fontinfo * lookupFont(docstring const & name0)
|
||
{
|
||
//lyxerr << "searching font '" << name << "'" << endl;
|
||
int const n = sizeof(fontinfos) / sizeof(fontinfo);
|
||
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);
|
||
}
|
||
|
||
|
||
bool isMathFont(docstring const & name)
|
||
{
|
||
fontinfo * f = lookupFont(name);
|
||
return f && f->color_ == Color_math;
|
||
}
|
||
|
||
|
||
bool isTextFont(docstring const & name)
|
||
{
|
||
fontinfo * f = lookupFont(name);
|
||
return f && f->color_ == Color_foreground;
|
||
}
|
||
|
||
|
||
FontInfo getFont(docstring const & name)
|
||
{
|
||
FontInfo 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(FontInfo & 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_ != Color_none)
|
||
font.setColor(info->color_);
|
||
}
|
||
|
||
|
||
bool isAlphaSymbol(MathAtom const & at)
|
||
{
|
||
if (at->asCharInset() ||
|
||
(at->asSymbolInset() &&
|
||
at->asSymbolInset()->isOrdAlpha()))
|
||
return true;
|
||
|
||
if (at->asFontInset()) {
|
||
MathData const & ar = at->asFontInset()->cell(0);
|
||
for (size_t i = 0; i < ar.size(); ++i) {
|
||
if (!(ar[i]->asCharInset() ||
|
||
(ar[i]->asSymbolInset() &&
|
||
ar[i]->asSymbolInset()->isOrdAlpha())))
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
|
||
docstring asString(MathData const & ar)
|
||
{
|
||
odocstringstream os;
|
||
TexRow texrow(false);
|
||
otexrowstream ots(os,texrow);
|
||
WriteStream ws(ots);
|
||
ws << ar;
|
||
return os.str();
|
||
}
|
||
|
||
|
||
void asArray(docstring const & str, MathData & ar, Parse::flags pf)
|
||
{
|
||
bool quiet = pf & Parse::QUIET;
|
||
if ((str.size() == 1 && quiet) || (!mathed_parse_cell(ar, str, pf) && quiet))
|
||
mathed_parse_cell(ar, str, pf | Parse::VERBATIM);
|
||
}
|
||
|
||
|
||
docstring asString(InsetMath const & inset)
|
||
{
|
||
odocstringstream os;
|
||
TexRow texrow(false);
|
||
otexrowstream ots(os,texrow);
|
||
WriteStream ws(ots);
|
||
inset.write(ws);
|
||
return os.str();
|
||
}
|
||
|
||
|
||
docstring asString(MathAtom const & at)
|
||
{
|
||
odocstringstream os;
|
||
TexRow texrow(false);
|
||
otexrowstream ots(os,texrow);
|
||
WriteStream ws(ots);
|
||
at->write(ws);
|
||
return os.str();
|
||
}
|
||
|
||
|
||
} // namespace lyx
|