mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-11-16 02:25:50 +08:00
244 lines
8.0 KiB
C++
244 lines
8.0 KiB
C++
/*
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Copyright (c) 2008-2022 Jan W. Krieger (<jan@jkrieger.de>)
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This software is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License (LGPL) as published by
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the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License (LGPL) for more details.
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You should have received a copy of the GNU Lesser General Public License (LGPL)
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "jkqtmathtext/nodes/jkqtmathtextverbatimnode.h"
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#include "jkqtmathtext/jkqtmathtexttools.h"
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#include "jkqtmathtext/nodes/jkqtmathtextnode.h"
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#include "jkqtmathtext/jkqtmathtext.h"
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#include "jkqtcommon/jkqtpcodestructuring.h"
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#include "jkqtcommon/jkqtpstringtools.h"
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#include "jkqtcommon/jkqtpdebuggingtools.h"
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#include <cmath>
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#include <QFontMetricsF>
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#include <QDebug>
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#include <QFontDatabase>
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#include <QFontInfo>
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#include <QApplication>
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#include <QFont>
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JKQTMathTextVerbatimNode::JKQTMathTextVerbatimNode(JKQTMathText *_parent, const QString& _text, bool visibleWhitespace_, JKQTMathTextHorizontalAlignment _alignment, double _linespacingFactor, JKQTMathTextVerticalOrientation _verticalOrientation, size_t tabSize_):
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JKQTMathTextTextBaseNode(_parent, _text),
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alignment(_alignment),
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lineSpacingFactor(_linespacingFactor),
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verticalOrientation(_verticalOrientation),
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visibleWhitespace(visibleWhitespace_),
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tabSize(tabSize_)
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{
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}
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QString JKQTMathTextVerbatimNode::getTypeName() const
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{
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return QLatin1String("JKQTMathTextVerbatimNode");
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}
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JKQTMathTextHorizontalAlignment JKQTMathTextVerbatimNode::getAlignment() const
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{
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return alignment;
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}
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JKQTMathTextVerticalOrientation JKQTMathTextVerbatimNode::getVerticalOrientation() const
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{
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return verticalOrientation;
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}
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double JKQTMathTextVerbatimNode::getLineSpacingFactor() const
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{
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return lineSpacingFactor;
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}
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bool JKQTMathTextVerbatimNode::getVisibleWhitespace() const
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{
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return visibleWhitespace;
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}
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size_t JKQTMathTextVerbatimNode::getTabSize() const
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{
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return tabSize;
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}
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double JKQTMathTextVerbatimNode::draw(QPainter &painter, double x, double y, JKQTMathTextEnvironment currentEv) const
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{
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#ifdef JKQTBP_AUTOTIMER
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JKQTPAutoOutputTimer jkaat(QString("JKQTMathTextVerbatimNode[]::draw()"));
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#endif
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transformEnvironment(currentEv);
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const LayoutInfo l=calcLayout(painter, currentEv);
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doDrawBoxes(painter, x, y, l);
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QFont f=currentEv.getFont(parentMathText);
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f.setStyleStrategy(QFont::PreferDefault);
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f.setFixedPitch(true);
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painter.save(); auto __finalpaint=JKQTPFinally([&painter]() {painter.restore();});
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painter.setFont(f);
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for (int i=0; i<l.lines.size(); i++) {
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painter.drawText(QPointF(x+l.X.at(i).x(), y+l.X.at(i).y()), l.lines.at(i));
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}
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return x+l.width;
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}
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bool JKQTMathTextVerbatimNode::toHtml(QString &html, JKQTMathTextEnvironment currentEv, JKQTMathTextEnvironment defaultEv) const
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{
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transformEnvironment(currentEv);
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const bool isMultiLine=text.count('\n')>0;
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html+=currentEv.toHtmlStart(defaultEv, parentMathText);
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if (isMultiLine) {
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if (alignment==MTHALeft) {
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html+="<div align=\"left\">";
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} else if (alignment==MTHACentered) {
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html+="<div align=\"center\">";
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} else if (alignment==MTHARight) {
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html+="<div align=\"right\">";
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}
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}
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html+="<pre>";
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html+=textTransform(text, currentEv).toHtmlEscaped();
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html+="</pre>";
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if (isMultiLine) html+="</div>";
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html+=currentEv.toHtmlAfter(defaultEv, parentMathText);
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return true;
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}
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JKQTMathTextNodeSize JKQTMathTextVerbatimNode::getSizeInternal(QPainter &painter, JKQTMathTextEnvironment currentEv) const
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{
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transformEnvironment(currentEv);
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return calcLayout(painter, currentEv);
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}
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void JKQTMathTextVerbatimNode::transformEnvironment(JKQTMathTextEnvironment ¤tEv) const
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{
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currentEv.font=MTEtypewriter;
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}
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JKQTMathTextVerbatimNode::LayoutInfo JKQTMathTextVerbatimNode::calcLayout(QPainter &painter, const JKQTMathTextEnvironment& currentEv) const
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{
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LayoutInfo l;
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QFont f=currentEv.getFont(parentMathText);
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f.setStyleStrategy(QFont::PreferDefault);
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f.setFixedPitch(true);
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const qreal fascent=JKQTMathTextGetFontAscent(f, painter.device());
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const double linespacing=JKQTMathTextGetFontLineSpacing(f, painter.device())*lineSpacingFactor;
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const double fleading=JKQTMathTextGetFontLeading(f, painter.device());
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const double synLeading=JKQTMathTextGetFontLineWidth(f, painter.device());
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const double lineLeading=((fabs(fleading)>1e-6)?fleading:synLeading)*lineSpacingFactor;
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if (text.size()<=0) {
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return l;
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}
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l.lines=textTransform(text, currentEv).split('\n');
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// from now on we have at least one child node!!!
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QList<double> widths, heights, ascents, descents, strikeouts;
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double heightSum=0;
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QList<double> ysFromFirstLine; // y-position of each line, where the first line is always at y=0 (i.e. ysFromFirstLine[0]==0)
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double y=0;
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for (int i=0; i<l.lines.size(); i++) {
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if (i==0) {
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heightSum=fascent;
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} else if (i>0) {
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const double deltaLine=qMax(linespacing, descents.last()+lineLeading+fascent);
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heightSum=heightSum+deltaLine;
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y=y+deltaLine;
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}
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widths<<JKQTMathTextGetBoundingRect(f,l.lines[i],painter.device()).width();
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l.width=qMax(l.width, widths.last());
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heights<<JKQTMathTextGetFontHeight(f, painter.device());
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ascents<<fascent;
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descents<<JKQTMathTextGetFontDescent(f, painter.device());
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strikeouts<<JKQTMathTextGetFontStrikoutPos(f, painter.device());
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ysFromFirstLine<<y;
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}
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heightSum+=descents.last();
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l.overallHeight=heightSum;
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double y0=0;
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if (verticalOrientation==MTVOTop) {
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l.baselineHeight=0;
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l.strikeoutPos=0;
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y0=ascents.first();
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} else if (verticalOrientation==MTVOFirstLine) {
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l.baselineHeight=ascents.first();
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l.strikeoutPos=strikeouts.first();
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y0=0;
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} else if (verticalOrientation==MTVOCentered) {
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l.baselineHeight=heightSum/2.0;
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l.strikeoutPos=heightSum/4.0;
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y0=-heightSum/2.0+ascents.first();
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} else if (verticalOrientation==MTVOLastLine) {
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l.baselineHeight=heightSum-descents.last();
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l.strikeoutPos=strikeouts.last();
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y0=-(heightSum-ascents.first()-descents.last());
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} else if (verticalOrientation==MTVOBottom) {
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l.baselineHeight=heightSum;
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l.strikeoutPos=0;
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y0=-(heightSum-ascents.first());
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}
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for (int i=0; i<l.lines.size(); i++) {
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double x=0;
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if (alignment==MTHARight) x=l.width-widths[i];
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else if (alignment==MTHACentered) x=(l.width-widths[i])/2.0;
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l.X<<QPointF(x,ysFromFirstLine[i]+y0);
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}
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return l;
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}
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QString JKQTMathTextVerbatimNode::textTransform(const QString &text, const JKQTMathTextEnvironment ¤tEv) const
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{
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QFont f=currentEv.getFont(parentMathText);
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f.setStyleStrategy(QFont::PreferDefault);
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const QFontMetricsF fm(f);
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QString spRep=QChar(0xB7);
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if (!fm.inFont(spRep[0])) {
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spRep=QChar(0x2423);
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}
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QString tabRep=QString(tabSize,QChar(0x2192));
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if (!fm.inFont(tabRep[0])) {
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spRep=QString(tabSize,QChar(0xAC));
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}
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QString res=JKQTMathTextTextBaseNode::textTransform(text, currentEv);
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if (res.startsWith('\n')) res=res.right(res.size()-1);
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if (res.endsWith('\n')) res=res.left(res.size()-1);
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if (visibleWhitespace) {
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res.replace(' ', spRep);
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res.replace('\t', tabRep);
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return res;
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} else {
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res.replace('\t', QString(tabSize, ' '));
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return res;
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}
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return res;
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}
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JKQTMathTextVerbatimNode::LayoutInfo::LayoutInfo():
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JKQTMathTextNodeSize(), lines(), X()
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{
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}
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