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04f1569003
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@6187 a592a061-630c-0410-9148-cb99ea01b6c8
685 lines
17 KiB
C
685 lines
17 KiB
C
/**
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* \file insetlatexaccent.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 Lars Gullik Bjønnes
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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 "insetlatexaccent.h"
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#include "debug.h"
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#include "lyxrc.h"
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#include "support/lstrings.h"
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#include "BufferView.h"
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#include "frontends/Painter.h"
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#include "frontends/font_metrics.h"
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#include "language.h"
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#include "lyxlex.h"
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using std::ostream;
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using std::endl;
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/* LatexAccent. Proper handling of accented characters */
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/* This part is done by Ivan Schreter, schreter@ccsun.tuke.sk */
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/* Later modified by Lars G. Bjønnes, larsbj@lyx.org */
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InsetLatexAccent::InsetLatexAccent()
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: candisp(false)
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{}
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InsetLatexAccent::InsetLatexAccent(string const & str)
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: contents(str)
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{
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checkContents();
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}
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void InsetLatexAccent::checkContents()
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// check, if we know the modifier and can display it ok on screen
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{
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candisp = false;
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if (contents.empty() || contents.length() < 2) {
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lyxerr[Debug::KEY] << "Cannot decode: " << contents << endl;
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return;
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}
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// REMOVE IN 0.13
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// Dirty Hack for backward compability. remove in 0.13 (Lgb)
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contents = trim(contents);
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if (!contains(contents, "{") && !contains(contents, "}")) {
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if (contents.length() == 2) {
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string tmp;
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tmp += contents[0];
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tmp += contents[1];
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tmp += "{}";
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contents = tmp;
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} else if (contents.length() == 3) {
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string tmp;
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tmp += contents[0];
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tmp += contents[1];
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tmp += '{';
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tmp += contents[2];
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tmp += '}';
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contents = tmp;
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} else if (contents.length() == 4 && contents[2] == ' ') {
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string tmp;
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tmp += contents[0];
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tmp += contents[1];
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tmp += '{';
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tmp += contents[3];
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tmp += '}';
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contents = tmp;
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} else if (contents.length() == 4 && contents[2] == '\\'
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&& (contents[3] == 'i' || contents[3] == 'j')) {
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string tmp;
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tmp += contents[0];
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tmp += contents[1];
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tmp += '{';
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tmp += contents[2];
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tmp += contents[3];
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tmp += '}';
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contents = tmp;
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}
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}
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if (contents[0] != '\\') { // demand that first char is a '\\'
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lyxerr[Debug::KEY] << "Cannot decode: " << contents << endl;
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return;
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}
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lyxerr[Debug::KEY] << "Decode: " << contents << endl;
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remdot = false; plusasc = false; plusdesc = false;
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switch (contents[1]) { // second char should be one of these
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case '\'': // acute
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modtype = ACUTE; // acute
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plusasc = true; // at the top of character
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break;
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case '`': // grave
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modtype = GRAVE; // grave
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plusasc = true; // at the top
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break;
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case '=': // macron
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modtype = MACRON; // macron
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plusasc = true; // at the top
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break;
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case '~': // tilde
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modtype = TILDE; // tilde
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plusasc = true; // at the top
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break;
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case 'b': // underbar
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modtype = UNDERBAR; // underbar
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plusdesc = true; // at the bottom
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break;
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case 'c': // cedilla
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modtype = CEDILLA; // cedilla
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plusdesc = true; // at the bottom
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break;
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case 'd': // underdot
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modtype = UNDERDOT; // underdot
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plusdesc = true; // at the bottom
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break;
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case 'r': // circle
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modtype = CIRCLE; // circle
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plusasc = true; // at the top
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break;
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case 't': // tie
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modtype = TIE; // tie
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plusasc = true; // at the top
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break;
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case 'u': // breve
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modtype = BREVE; // breve
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plusasc = true; // at the top
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break;
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case 'v': // caron
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modtype = CARON; // caron
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plusasc = true; // at the top
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break;
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case 'q': // special caron
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modtype = SPECIAL_CARON; // special caron
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plusasc = true; // at the top
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break;
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case 'H': // hungarian umlaut
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modtype = HUNGARIAN_UMLAUT; // hungarian umlaut
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plusasc = true; // at the top
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break;
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case '"': // umlaut
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modtype = UMLAUT; // umlaut
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plusasc = true; // at the top
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break;
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case '.': // dot
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modtype = DOT; // dot
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plusasc = true; // at the top
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break;
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case '^': // circumflex
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modtype = CIRCUMFLEX; // circumflex
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plusasc = true; // at the top
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break;
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case 'k': // ogonek
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modtype = OGONEK; // ogonek
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plusdesc = true;
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break;
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case 'i': // dot-less-i
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modtype = DOT_LESS_I; // dot-less-i
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plusasc = true; // at the top (not really needed)
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remdot = true;
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break;
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case 'j': // dot-less-j
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modtype = DOT_LESS_J; // dot-less-j
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plusasc = true; // at the top (not really needed)
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remdot = true;
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break;
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case 'l': // lslash
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modtype = lSLASH;
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plusasc = true; // at the top (not really needed)
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break;
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case 'L': // lslash
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modtype = LSLASH;
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plusasc = true; // at the top (not really needed)
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break;
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default:
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lyxerr[Debug::KEY] << "Default" << endl;
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// unknow accent (or something else)
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return;
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}
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// we demand that third char is a '{' (Lgb)
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if (contents[2] != '{') return;
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// special clause for \i{}, \j{} \l{} and \L{}
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if ((modtype == DOT_LESS_I || modtype == DOT_LESS_J
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|| modtype == lSLASH || modtype == LSLASH)
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&& contents[3] == '}') {
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switch (modtype) {
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case DOT_LESS_I: ic = 'i'; break;
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case DOT_LESS_J: ic = 'j'; break;
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case lSLASH: ic = 'l'; break;
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case LSLASH: ic = 'L'; break;
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default:
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// if this happens something is really wrong
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lyxerr << "InsetLaTexAccent: weird error." << endl;
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break;
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}
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//ic = (modtype == DOT_LESS_J ? 'j' : 'i');
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lyxerr[Debug::KEY] << "Contents: [" << contents << ']'
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<< ", ic: " << ic
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<< ", top: " << plusasc
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<< ", bot: " << plusdesc
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<< ", dot: " << remdot
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<< ", mod: " << modtype << endl;
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// Special case for space
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} else if (contents[3] == '}') {
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ic = ' ';
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} else {
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int i = 3;
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// now get the char
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ic = contents[3]; // i will always be 3 here
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// ic should now be a alfa-char or '\\'
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if (ic == '\\') {
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ic = contents[++i]; // will only allow \<foo>{\i} and \<foo>{\j}
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if (ic == 'i' || ic == 'j')
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remdot = true;
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else
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return;
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} else if ((ic == 'i'|| ic == 'j') && contents[4] == '}') {
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// Do a rewrite: \<foo>{i} --> \<foo>{\i}
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string temp = contents;
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temp.erase(3, string::npos);
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temp += '\\';
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temp += char(ic);
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for (string::size_type j = 4;
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j < contents.length(); ++j)
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temp+= contents[j];
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contents= temp;
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++i;
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remdot = true;
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}
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// demand a '}' at the end
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if (contents[++i] != '}' && contents[++i]) return;
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// fine, the char is properly decoded now (hopefully)
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lyxerr[Debug::KEY] << "Contents: [" << contents << ']'
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<< ", ic: " << ic
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<< ", top: " << plusasc
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<< ", bot: " << plusdesc
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<< ", dot: " << remdot
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<< ", mod: " << modtype << endl;
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}
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candisp = true;
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}
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int InsetLatexAccent::ascent(BufferView *, LyXFont const & font) const
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{
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// This function is a bit too simplistix and is just a
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// "try to make a fit for all accents" approach, to
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// make it better we need to know what kind of accent is
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// used and add to max based on that.
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int max;
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if (candisp) {
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if (ic == ' ')
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max = font_metrics::ascent('a', font);
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else
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max = font_metrics::ascent(ic, font);
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if (plusasc)
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max += (font_metrics::maxAscent(font) + 3) / 3;
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} else
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max = font_metrics::maxAscent(font) + 4;
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return max;
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}
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int InsetLatexAccent::descent(BufferView *, LyXFont const & font) const
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{
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int max;
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if (candisp) {
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if (ic == ' ')
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max = font_metrics::descent('a', font);
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else
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max = font_metrics::descent(ic, font);
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if (plusdesc)
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max += 3;
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} else
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max = font_metrics::maxDescent(font) + 4;
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return max;
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}
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int InsetLatexAccent::width(BufferView *, LyXFont const & font) const
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{
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if (candisp)
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return font_metrics::width(ic, font);
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else
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return font_metrics::width(contents, font) + 4;
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}
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int InsetLatexAccent::lbearing(LyXFont const & font) const
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{
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return font_metrics::lbearing(ic, font);
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}
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int InsetLatexAccent::rbearing(LyXFont const & font) const
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{
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return font_metrics::rbearing(ic, font);
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}
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bool InsetLatexAccent::displayISO8859_9(BufferView * bv, LyXFont const & font,
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int baseline,
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float & x) const
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{
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unsigned char tmpic = ic;
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switch (modtype) {
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case CEDILLA:
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{
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if (ic == 'c') tmpic = 0xe7;
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if (ic == 'C') tmpic = 0xc7;
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if (ic == 's') tmpic = 0xfe;
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if (ic == 'S') tmpic = 0xde;
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break;
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}
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case BREVE:
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{ if (ic == 'g') tmpic = 0xf0;
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if (ic == 'G') tmpic = 0xd0;
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break;
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}
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case UMLAUT:
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{
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if (ic == 'o') tmpic = 0xf6;
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if (ic == 'O') tmpic = 0xd6;
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if (ic == 'u') tmpic = 0xfc;
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if (ic == 'U') tmpic = 0xdc;
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break;
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}
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case DOT: if (ic == 'I') tmpic = 0xdd; break;
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case DOT_LESS_I: tmpic = 0xfd; break;
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default: return false;
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}
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if (tmpic != ic) {
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char ch = char(tmpic);
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bv->painter().text(int(x), baseline, ch, font);
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x += width(bv, font);
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return true;
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}
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else
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return false;
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}
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void InsetLatexAccent::draw(BufferView * bv, LyXFont const & font0,
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int baseline, float & x, bool) const
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{
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Painter & pain = bv->painter();
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if (lyxrc.font_norm_type == LyXRC::ISO_8859_9)
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if (displayISO8859_9(bv, font0, baseline, x))
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return;
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/* draw it! */
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// All the manually drawn accents in this function could use an
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// overhaul. Different ways of drawing (what metrics to use)
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// should also be considered.
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LyXFont font(font0);
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if (lyxrc.font_norm_type == LyXRC::ISO_10646_1)
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font.setLanguage(english_language);
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if (candisp) {
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int asc = ascent(bv, font);
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int desc = descent(bv, font);
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int wid = width(bv, font);
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float x2 = x + (rbearing(font) - lbearing(font)) / 2.0;
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float hg;
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int y;
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if (plusasc) {
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// mark at the top
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hg = font_metrics::maxDescent(font);
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y = baseline - asc;
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if (font.shape() == LyXFont::ITALIC_SHAPE)
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x2 += (4.0 * hg) / 5.0; // italic
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} else {
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// at the bottom
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hg = desc;
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y = baseline;
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}
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float hg35 = float(hg * 3.0) / 5.0;
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// display with proper accent mark
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// first the letter
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pain.text(int(x), baseline, ic, font);
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if (remdot) {
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int tmpvar = baseline - font_metrics::ascent('i', font);
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float tmpx = 0;
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if (font.shape() == LyXFont::ITALIC_SHAPE)
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tmpx += (8.0 * hg) / 10.0; // italic
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lyxerr[Debug::KEY] << "Removing dot." << endl;
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// remove the dot first
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pain.fillRectangle(int(x + tmpx), tmpvar, wid,
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font_metrics::ascent('i', font) -
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font_metrics::ascent('x', font) - 1,
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backgroundColor());
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// the five lines below is a simple hack to
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// make the display of accent 'i' and 'j'
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// better. It makes the accent be written
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// closer to the top of the dot-less 'i' or 'j'.
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char tmpic = ic; // store the ic when we
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ic = 'x'; // calculates the ascent of
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asc = ascent(bv, font); // the dot-less version (here: 'x')
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ic = tmpic; // set the orig ic back
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y = baseline - asc; // update to new y coord.
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}
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// now the rest - draw within (x, y, x+wid, y+hg)
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switch (modtype) {
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case ACUTE: // acute 0xB4
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{
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pain.text(int(x2 - (font_metrics::rbearing(0xB4, font) - font_metrics::lbearing(0xB4, font)) / 2),
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baseline - font_metrics::ascent(ic, font) - font_metrics::descent(0xB4, font) - (font_metrics::ascent(0xB4, font) + font_metrics::descent(0xB4, font)) / 2,
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char(0xB4), font);
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break;
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}
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case GRAVE: // grave 0x60
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{
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pain.text(int(x2 - (font_metrics::rbearing(0x60, font) - font_metrics::lbearing(0x60, font)) / 2),
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int(baseline - font_metrics::ascent(ic, font) - font_metrics::descent(0x60, font) - (font_metrics::ascent(0x60, font) + font_metrics::descent(0x60, font)) / 2.0),
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char(0x60), font);
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break;
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}
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case MACRON: // macron
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{
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pain.text(int(x2 - (font_metrics::rbearing(0xAF, font) - font_metrics::lbearing(0xAF, font)) / 2),
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baseline - font_metrics::ascent(ic, font) - font_metrics::descent(0xAF, font) - (font_metrics::ascent(0xAF, font) + font_metrics::descent(0xAF, font)),
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char(0xAF), font);
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break;
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}
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case TILDE: // tilde
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{
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pain.text(int(x2 - (font_metrics::rbearing('~', font) - font_metrics::lbearing('~', font)) / 2),
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baseline - font_metrics::ascent(ic, font) - font_metrics::descent('~', font) - (font_metrics::ascent('~', font) + font_metrics::descent('~', font)) / 2,
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'~', font);
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break;
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}
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case UNDERBAR: // underbar 0x5F
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{
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pain.text(int(x2 - (font_metrics::rbearing(0x5F, font) - font_metrics::lbearing(0x5F, font)) / 2), baseline,
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char(0x5F), font);
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break;
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}
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case CEDILLA: // cedilla
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{
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pain.text(int(x2 - (font_metrics::rbearing(0xB8, font) - font_metrics::lbearing(0xB8, font)) / 2), baseline,
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char(0xB8), font);
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break;
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}
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case UNDERDOT: // underdot
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{
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pain.text(int(x2 - (font_metrics::rbearing('.', font) - font_metrics::lbearing('.', font)) / 2.0),
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int(baseline + 3.0 / 2.0 * (font_metrics::ascent('.', font) + font_metrics::descent('.', font))),
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'.', font);
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break;
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}
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case DOT: // dot
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{
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pain.text(int(x2 - (font_metrics::rbearing('.', font) - font_metrics::lbearing('.', font)) / 2.0),
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baseline - font_metrics::ascent(ic, font) - font_metrics::descent('.', font) - (font_metrics::ascent('.', font) + font_metrics::descent('.', font)) / 2,
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'.', font);
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break;
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}
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case CIRCLE: // circle
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{
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LyXFont tmpf(font);
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tmpf.decSize().decSize();
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pain.text(int(x2 - (font_metrics::rbearing(0xB0, tmpf) - font_metrics::lbearing(0xB0, tmpf)) / 2.0),
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int(baseline - font_metrics::ascent(ic, font) - font_metrics::descent(0xB0, tmpf) - (font_metrics::ascent(0xB0, tmpf) + font_metrics::descent(0xB0, tmpf)) / 3.0),
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char(0xB0), tmpf);
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break;
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}
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case TIE: // tie
|
||
{
|
||
pain.arc(int(x2 + hg35), int(y + hg / 2.0),
|
||
int(2 * hg), int(hg), 0, 360 * 32);
|
||
break;
|
||
}
|
||
case BREVE: // breve
|
||
{
|
||
pain.arc(int(x2 - (hg / 2.0)), y,
|
||
int(hg), int(hg), 0, -360*32);
|
||
break;
|
||
}
|
||
case CARON: // caron
|
||
{
|
||
int xp[3], yp[3];
|
||
|
||
xp[0] = int(x2 - hg35); yp[0] = int(y + hg35);
|
||
xp[1] = int(x2); yp[1] = int(y + hg);
|
||
xp[2] = int(x2 + hg35); yp[2] = int(y + hg35);
|
||
pain.lines(xp, yp, 3);
|
||
break;
|
||
}
|
||
case SPECIAL_CARON: // special caron
|
||
{
|
||
switch (ic) {
|
||
case 'L': wid = int(4.0 * wid / 5.0); break;
|
||
case 't': y -= int(hg35 / 2.0); break;
|
||
}
|
||
int xp[3], yp[3];
|
||
xp[0] = int(x + wid);
|
||
yp[0] = int(y + hg35 + hg);
|
||
|
||
xp[1] = int(x + wid + (hg35 / 2.0));
|
||
yp[1] = int(y + hg + (hg35 / 2.0));
|
||
|
||
xp[2] = int(x + wid + (hg35 / 2.0));
|
||
yp[2] = y + int(hg);
|
||
|
||
pain.lines(xp, yp, 3);
|
||
break;
|
||
}
|
||
case HUNGARIAN_UMLAUT: // hung. umlaut
|
||
{
|
||
pain.text(int(x2 - (font_metrics::rbearing('´', font) - font_metrics::lbearing('´', font))),
|
||
baseline - font_metrics::ascent(ic, font) - font_metrics::descent('´', font) - (font_metrics::ascent('´', font) + font_metrics::descent('´', font)) / 2,
|
||
'´', font);
|
||
pain.text(int(x2),
|
||
baseline - font_metrics::ascent(ic, font) - font_metrics::descent('´', font) - (font_metrics::ascent('´', font) + font_metrics::descent('´', font)) / 2,
|
||
'´', font);
|
||
break;
|
||
}
|
||
case UMLAUT: // umlaut
|
||
{
|
||
pain.text(int(x2 - (font_metrics::rbearing('¨', font) - font_metrics::lbearing('¨', font)) / 2),
|
||
baseline - font_metrics::ascent(ic, font) - font_metrics::descent('¨', font) - (font_metrics::ascent('¨', font) + font_metrics::descent('¨', font)) / 2,
|
||
'¨', font);
|
||
break;
|
||
}
|
||
case CIRCUMFLEX: // circumflex
|
||
{
|
||
LyXFont tmpf(font);
|
||
tmpf.decSize().decSize().decSize();
|
||
pain.text(int(x2 - (font_metrics::rbearing(0x5E, tmpf) - font_metrics::lbearing(0x5E, tmpf)) / 2),
|
||
int(baseline - font_metrics::ascent(ic, font) - font_metrics::descent(0x5E, tmpf) - (font_metrics::ascent(0x5E, tmpf) + font_metrics::descent(0x5E, tmpf)) / 3.0),
|
||
char(0x5E), tmpf);
|
||
break;
|
||
}
|
||
case OGONEK: // ogonek
|
||
{
|
||
// this does probably not look like an ogonek, so
|
||
// it should certainly be refined
|
||
int xp[4], yp[4];
|
||
|
||
xp[0] = int(x2);
|
||
yp[0] = y;
|
||
|
||
xp[1] = int(x2);
|
||
yp[1] = y + int(hg35);
|
||
|
||
xp[2] = int(x2 - hg35);
|
||
yp[2] = y + int(hg / 2.0);
|
||
|
||
xp[3] = int(x2 + hg / 4.0);
|
||
yp[3] = y + int(hg);
|
||
|
||
pain.lines(xp, yp, 4);
|
||
break;
|
||
}
|
||
case lSLASH:
|
||
case LSLASH:
|
||
{
|
||
int xp[2], yp[2];
|
||
|
||
xp[0] = int(x);
|
||
yp[0] = y + int(3.0 * hg);
|
||
|
||
xp[1] = int(x + float(wid) * 0.75);
|
||
yp[1] = y + int(hg);
|
||
|
||
pain.lines(xp, yp, 2);
|
||
break;
|
||
}
|
||
case DOT_LESS_I: // dotless-i
|
||
case DOT_LESS_J: // dotless-j
|
||
{
|
||
// nothing to do for these
|
||
break;
|
||
}
|
||
}
|
||
} else {
|
||
pain.fillRectangle(int(x + 1),
|
||
baseline - ascent(bv, font) + 1,
|
||
width(bv, font) - 2,
|
||
ascent(bv, font)
|
||
+ descent(bv, font) - 2,
|
||
backgroundColor());
|
||
pain.rectangle(int(x + 1), baseline - ascent(bv, font) + 1,
|
||
width(bv, font) - 2,
|
||
ascent(bv, font) + descent(bv, font) - 2);
|
||
pain.text(int(x + 2), baseline, contents, font);
|
||
}
|
||
x += width(bv, font);
|
||
}
|
||
|
||
|
||
void InsetLatexAccent::write(Buffer const *, ostream & os) const
|
||
{
|
||
os << "\\i " << contents << "\n";
|
||
}
|
||
|
||
|
||
void InsetLatexAccent::read(Buffer const *, LyXLex & lex)
|
||
{
|
||
lex.eatLine();
|
||
contents = lex.getString();
|
||
checkContents();
|
||
}
|
||
|
||
|
||
int InsetLatexAccent::latex(Buffer const *, ostream & os,
|
||
bool /*fragile*/, bool/*fs*/) const
|
||
{
|
||
os << contents;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int InsetLatexAccent::ascii(Buffer const *, ostream & os, int) const
|
||
{
|
||
os << contents;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int InsetLatexAccent::linuxdoc(Buffer const *, ostream & os) const
|
||
{
|
||
os << contents;
|
||
return 0;
|
||
}
|
||
|
||
|
||
int InsetLatexAccent::docbook(Buffer const *, ostream & os, bool) const
|
||
{
|
||
os << contents;
|
||
return 0;
|
||
}
|
||
|
||
|
||
bool InsetLatexAccent::directWrite() const
|
||
{
|
||
return true;
|
||
}
|
||
|
||
|
||
Inset * InsetLatexAccent::clone(Buffer const &, bool) const
|
||
{
|
||
return new InsetLatexAccent(contents);
|
||
}
|
||
|
||
|
||
Inset::Code InsetLatexAccent::lyxCode() const
|
||
{
|
||
return Inset::ACCENT_CODE;
|
||
}
|
||
|
||
|
||
ostream & operator<<(ostream & o, InsetLatexAccent::ACCENT_TYPES at)
|
||
{
|
||
return o << int(at);
|
||
}
|