mirror of
https://git.lyx.org/repos/lyx.git
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b8198905dc
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4887 a592a061-630c-0410-9148-cb99ea01b6c8
652 lines
15 KiB
C
652 lines
15 KiB
C
#include <config.h>
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#include <map>
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#include "math_support.h"
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#include "lyxfont.h"
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#include "math_cursor.h"
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#include "math_inset.h"
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#include "math_parser.h"
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#include "math_metricsinfo.h"
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#include "frontends/Painter.h"
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#include "frontends/font_metrics.h"
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#include "frontends/lyx_gui.h"
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#include "debug.h"
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#include "commandtags.h"
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#include "dimension.h"
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using std::map;
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using std::endl;
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using std::max;
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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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{"[", 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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{"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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map<string, deco_struct> deco_list;
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// sort the table on startup
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struct init_deco_table {
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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[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(string const & name)
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{
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map<string, 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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void mathed_char_dim(LyXFont const & font, unsigned char c, Dimension & dim)
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{
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dim.d = font_metrics::descent(c, font);
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dim.a = font_metrics::ascent(c, font);
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dim.w = mathed_char_width(font, c);
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}
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int mathed_char_ascent(LyXFont const & font, unsigned char c)
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{
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return font_metrics::ascent(c, font);
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}
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int mathed_char_descent(LyXFont const & font, unsigned char c)
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{
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return font_metrics::descent(c, font);
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}
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int mathed_char_width(LyXFont const & font, unsigned char c)
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{
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return font_metrics::width(c, font);
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}
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void mathed_string_dim(LyXFont const & font, string const & s, Dimension & dim)
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{
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#if 1
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dim.a = 0;
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dim.d = 0;
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for (string::const_iterator it = s.begin(); it != s.end(); ++it) {
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dim.a = max(dim.a, font_metrics::ascent(*it, font));
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dim.d = max(dim.d, font_metrics::descent(*it, font));
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}
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#else
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dim.a = font_metrics::maxAscent(font);
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dim.d = font_metrics::maxDescent(font);
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#endif
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dim.w = font_metrics::width(s, font);
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}
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int mathed_string_width(LyXFont const & font, string const & s)
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{
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return font_metrics::width(s, font);
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}
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void mathed_draw_deco(MathPainterInfo & pi, int x, int y, int w, int h,
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const string & 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::mathcursor, 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?\n";
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lyxerr << "name: '" << name << "'\n";
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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 mathed_draw_framebox(MathPainterInfo & pi, int x, int y, MathInset const * p)
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{
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if (mathcursor && mathcursor->isInside(p))
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pi.pain.rectangle(x, y - p->ascent(), p->width(), p->height(),
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LColor::mathframe);
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}
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// In the future maybe we use a better fonts renderer
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void drawStr(MathPainterInfo & pi, LyXFont const & font,
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int x, int y, string const & str)
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{
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pi.pain.text(x, y, str, font);
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}
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void drawStrRed(MathPainterInfo & pi, int x, int y, string 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(MathPainterInfo & pi, int x, int y, string const & str)
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{
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LyXFont f = pi.base.font;
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f.setColor(LColor::black);
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pi.pain.text(x, y, str, f);
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}
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void drawChar(MathPainterInfo & pi, LyXFont const & font, int x, int y, char c)
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{
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pi.pain.text(x, y, c, font);
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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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asc = font_metrics::maxAscent(font);
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des = font_metrics::maxDescent(font);
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}
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struct fontinfo {
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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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{"mathnormal",
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inh_family, LyXFont::MEDIUM_SERIES, LyXFont::UP_SHAPE, LColor::math},
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{"mathbf", inh_family, LyXFont::BOLD_SERIES, inh_shape, LColor::math},
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{"mathcal",LyXFont::CMSY_FAMILY, inh_series, inh_shape, LColor::math},
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{"mathfrak", LyXFont::EUFRAK_FAMILY, inh_series, inh_shape, LColor::math},
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{"mathrm", LyXFont::ROMAN_FAMILY, inh_series, inh_shape, LColor::math},
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{"mathsf", LyXFont::SANS_FAMILY, inh_series, inh_shape, LColor::math},
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{"cmex", LyXFont::CMEX_FAMILY, inh_series, inh_shape, LColor::math},
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{"cmm", LyXFont::CMM_FAMILY, inh_series, inh_shape, LColor::math},
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{"cmr", LyXFont::CMR_FAMILY, inh_series, inh_shape, LColor::math},
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{"cmsy", LyXFont::CMSY_FAMILY, inh_series, inh_shape, LColor::math},
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{"eufrak", LyXFont::EUFRAK_FAMILY, inh_series, inh_shape, LColor::math},
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{"msa", LyXFont::MSA_FAMILY, inh_series, inh_shape, LColor::math},
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{"msb", LyXFont::MSB_FAMILY, inh_series, inh_shape, LColor::math},
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{"wasy", LyXFont::WASY_FAMILY, inh_series, inh_shape, LColor::math},
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{"text", inh_family, inh_series, inh_shape, LColor::black},
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{"textbf", inh_family, LyXFont::BOLD_SERIES, inh_shape, LColor::black},
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{"textit", inh_family, inh_series, LyXFont::ITALIC_SHAPE, LColor::black},
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{"textmd", inh_family, LyXFont::MEDIUM_SERIES, inh_shape, LColor::black},
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{"textnormal", inh_family, inh_series, LyXFont::UP_SHAPE, LColor::black},
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{"textrm", LyXFont::ROMAN_FAMILY, inh_series,LyXFont::UP_SHAPE,LColor::black},
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{"textsc", inh_family, inh_series, LyXFont::SMALLCAPS_SHAPE, LColor::black},
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{"textsf", LyXFont::SANS_FAMILY, inh_series, inh_shape, LColor::black},
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{"textsl", inh_family, inh_series, LyXFont::SLANTED_SHAPE, LColor::black},
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{"texttt", LyXFont::TYPEWRITER_FAMILY, inh_series, inh_shape, LColor::black},
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{"textup", inh_family, inh_series, LyXFont::UP_SHAPE, LColor::black},
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// TIPA support
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{"textipa", inh_family, inh_series, inh_shape, LColor::black},
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{"lyxtex", inh_family, inh_series, inh_shape, LColor::latex},
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{"lyxert", LyXFont::TYPEWRITER_FAMILY, inh_series, inh_shape, LColor::latex},
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{"lyxsymbol", LyXFont::SYMBOL_FAMILY, inh_series, inh_shape, LColor::math},
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{"lyxboldsymbol",
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LyXFont::SYMBOL_FAMILY, LyXFont::BOLD_SERIES, inh_shape, LColor::math},
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{"lyxitsymbol", LyXFont::SYMBOL_FAMILY,
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inh_series, LyXFont::ITALIC_SHAPE, LColor::math},
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{"lyxblacktext", LyXFont::ROMAN_FAMILY,
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LyXFont::MEDIUM_SERIES, LyXFont::UP_SHAPE, LColor::black},
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{"lyxnochange", inh_family, inh_series, inh_shape, LColor::black},
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{"lyxfakebb", LyXFont::TYPEWRITER_FAMILY, LyXFont::BOLD_SERIES,
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LyXFont::UP_SHAPE, LColor::math},
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{"lyxfakecal", LyXFont::SANS_FAMILY, LyXFont::MEDIUM_SERIES,
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LyXFont::ITALIC_SHAPE, LColor::math},
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{"lyxfakefrak", LyXFont::ROMAN_FAMILY, LyXFont::BOLD_SERIES,
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LyXFont::ITALIC_SHAPE, LColor::math}
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};
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fontinfo * lookupFont(string const & name)
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{
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//lyxerr << "searching font '" << name << "'\n";
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int const n = sizeof(fontinfos) / sizeof(fontinfo);
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for (int i = 0; i < n; ++i)
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if (fontinfos[i].cmd_ == name) {
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//lyxerr << "found '" << i << "'\n";
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return fontinfos + i;
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}
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return 0;
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}
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fontinfo * searchFont(string const & name)
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{
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fontinfo * f = lookupFont(name);
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return f ? f : fontinfos;
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// this should be mathnormal
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//return searchFont("mathnormal");
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}
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bool isFontName(string const & name)
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{
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return lookupFont(name);
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}
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LyXFont getFont(string const & name)
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{
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LyXFont font;
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augmentFont(font, name);
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return font;
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}
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void fakeFont(string const & orig, string const & fake)
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{
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fontinfo * forig = searchFont(orig);
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fontinfo * ffake = searchFont(fake);
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if (forig && ffake) {
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forig->family_ = ffake->family_;
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forig->series_ = ffake->series_;
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forig->shape_ = ffake->shape_;
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forig->color_ = ffake->color_;
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} else {
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lyxerr << "Can't fake font '" << orig << "' with '" << fake << "'\n";
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}
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}
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void augmentFont(LyXFont & font, string const & name)
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{
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static bool initialized = false;
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if (!initialized) {
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initialized = true;
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// fake fonts if necessary
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if (!lyx_gui::font_available(getFont("mathfrak")))
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fakeFont("mathfrak", "lyxfakefrak");
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if (!lyx_gui::font_available(getFont("mathcal")))
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fakeFont("mathcal", "lyxfakecal");
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}
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fontinfo * info = searchFont(name);
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if (info->family_ != inh_family)
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font.setFamily(info->family_);
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if (info->series_ != inh_series)
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font.setSeries(info->series_);
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if (info->shape_ != inh_shape)
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font.setShape(info->shape_);
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if (info->color_ != LColor::none)
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font.setColor(info->color_);
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}
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