mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-11-16 02:25:50 +08:00
317 lines
10 KiB
C++
317 lines
10 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/jkqtmathtextwhitespacenode.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 <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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JKQTMathTextWhitespaceNode::JKQTMathTextWhitespaceNode(Types type, JKQTMathText *_parent):
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JKQTMathTextWhitespaceNode(type, 1, _parent)
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{
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}
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JKQTMathTextWhitespaceNode::JKQTMathTextWhitespaceNode(JKQTMathText *_parent):
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JKQTMathTextWhitespaceNode(WSTNormal, 1, _parent)
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{
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}
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JKQTMathTextWhitespaceNode::JKQTMathTextWhitespaceNode(const QString &_type, JKQTMathText *parent):
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JKQTMathTextWhitespaceNode(parent)
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{
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fillSupportedInstructions();
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whitespace=supportedInstructions[_type];
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}
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JKQTMathTextWhitespaceNode::JKQTMathTextWhitespaceNode(const QString &_type, size_t count, JKQTMathText *parent):
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JKQTMathTextWhitespaceNode(parent)
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{
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fillSupportedInstructions();
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whitespace=supportedInstructions[_type];
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whitespace.count=whitespace.count*count;
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}
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JKQTMathTextWhitespaceNode::JKQTMathTextWhitespaceNode(Types type, size_t count, JKQTMathText *parent):
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JKQTMathTextNode(parent),
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whitespace(type, count)
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{
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fillSupportedInstructions();
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}
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JKQTMathTextWhitespaceNode::~JKQTMathTextWhitespaceNode() {
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}
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QString JKQTMathTextWhitespaceNode::getTypeName() const
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{
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return QLatin1String("JKQTMathTextWhitespaceNode(")+Type2String(whitespace.type)+", count="+QString::number(whitespace.count)+")";
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}
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bool JKQTMathTextWhitespaceNode::toHtml(QString &html, JKQTMathTextEnvironment /*currentEv*/, JKQTMathTextEnvironment /*defaultEv*/) {
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for (size_t i=0; i<whitespace.count; i++) {
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html=html+Type2HTML(whitespace.type);
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}
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return true;
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}
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JKQTMathTextWhitespaceNode::WhitespaceProps::WhitespaceProps(JKQTMathTextWhitespaceNode::Types _type, size_t _count):
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type(_type), count(_count)
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{
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}
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JKQTMathTextWhitespaceNode::Types JKQTMathTextWhitespaceNode::getWhitespaceType() const
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{
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return whitespace.type;
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}
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size_t JKQTMathTextWhitespaceNode::getWhitespaceCount() const
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{
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return whitespace.count;
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}
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double JKQTMathTextWhitespaceNode::draw(QPainter &painter, double x, double y, JKQTMathTextEnvironment currentEv, const JKQTMathTextNodeSize *prevNodeSize)
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{
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doDrawBoxes(painter, x,y,currentEv);
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double width=0, bh=0, oh=0, sp=0;
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getSize(painter, currentEv, width, bh, oh, sp, prevNodeSize);
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return x+width;
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}
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void JKQTMathTextWhitespaceNode::getSizeInternal(QPainter &painter, JKQTMathTextEnvironment currentEv, double &width, double &baselineHeight, double &overallHeight, double &strikeoutPos, const JKQTMathTextNodeSize */*prevNodeSize*/)
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{
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const double singelWidthPIX=Type2PixelWidth(whitespace.type, currentEv, painter.device());
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const QFontMetricsF fm(currentEv.getFont(parentMathText));
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width=singelWidthPIX*static_cast<double>(whitespace.count);
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baselineHeight=0;
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overallHeight=0;
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strikeoutPos=fm.strikeOutPos();
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}
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QHash<QString, JKQTMathTextWhitespaceNode::WhitespaceProps> JKQTMathTextWhitespaceNode::supportedInstructions;
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void JKQTMathTextWhitespaceNode::fillSupportedInstructions()
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{
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if (supportedInstructions.size()==0) {
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supportedInstructions[" "]=WhitespaceProps(WSTthicker, 1);
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supportedInstructions["nbsp"]=WhitespaceProps(WSTNonbreaking, 1);
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supportedInstructions["enspace"]=supportedInstructions["enskip"]=WhitespaceProps(WST1en, 1);
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supportedInstructions["quad"]=supportedInstructions["emspace"]=WhitespaceProps(WSTQuad, 1);
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supportedInstructions["qquad"]=WhitespaceProps(WSTQuad, 2);
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supportedInstructions[","]=supportedInstructions["thinspace"]=WhitespaceProps(WSTthin, 1);
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supportedInstructions[":"]=supportedInstructions["medspace"]=WhitespaceProps(WSTmedium, 1);
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supportedInstructions[";"]=supportedInstructions["thickspace"]=WhitespaceProps(WSTthick, 1);
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supportedInstructions["!"]=supportedInstructions["negthinspace"]=WhitespaceProps(WSTnegthin, 1);
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supportedInstructions["negmedspace"]=WhitespaceProps(WSTnegmedium, 1);
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supportedInstructions["negthickspace"]=WhitespaceProps(WSTnegthick, 1);
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}
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}
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QString JKQTMathTextWhitespaceNode::Type2String(Types type)
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{
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switch (type) {
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case WSTNormal: return "WSTNormal";
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case WSTNonbreaking: return "WSTNonbreaking";
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case WST1en: return "WST1en";
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case WST1em: return "WST1em";
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case WSThair: return "WSThair";
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case WSTthin: return "WSTthin";
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case WSTnegthin: return "WSTnegthin";
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case WSTmedium: return "WSTmedium";
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case WSTnegmedium: return "WSTnegmedium";
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case WSTthick: return "WSTthick";
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case WSTnegthick: return "WSTnegthick";
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case WSTthicker: return "WSTthicker";
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}
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return "???";
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}
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double JKQTMathTextWhitespaceNode::Type2PixelWidth(Types type, JKQTMathTextEnvironment currentEv, QPaintDevice* pd) const
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{
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const QFontMetricsF fm(currentEv.getFont(parentMathText), pd);
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#if (QT_VERSION>=QT_VERSION_CHECK(5, 15, 0))
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const double em=fm.horizontalAdvance(QChar(0x2003));//currentEv.fontSize;
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const double sp=fm.horizontalAdvance(' ');//currentEv.fontSize;
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#else
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const double em=fm.width(QChar(0x2003));//currentEv.fontSize;
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const double sp=fm.width(' ');//currentEv.fontSize;
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#endif
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const double en=em/2.0;
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switch (type) {
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case WSTNormal: return sp;
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case WSTNonbreaking: return sp;
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case WST1en: return en;
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case WST1em: return em;
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case WSThair: return em/12.0;
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case WSTthin: return em/6.0;
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case WSTnegthin: return -em/6.0;
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case WSTmedium: return em*2.0/9.0;
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case WSTnegmedium: return -em*2.0/9.0;
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case WSTthick: return em*5.0/18.0;
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case WSTnegthick: return -em*5.0/18.0;
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case WSTthicker: return em/3.0;
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}
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return 0.0;
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}
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bool JKQTMathTextWhitespaceNode::supportsInstructionName(const QString &instruction)
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{
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fillSupportedInstructions();
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return supportedInstructions.contains(instruction);
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}
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QString JKQTMathTextWhitespaceNode::Type2HTML(Types type)
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{
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switch (type) {
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case WSTNonbreaking: return " ";
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case WST1en: return " ";
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case WST1em: return " ";
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case WSThair: return "&hairsp";
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case WSTthin: return " ";
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case WSTnegthin: return "";
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case WSTmedium: return " ";
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case WSTnegmedium: return "";
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case WSTthick: return " ";
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case WSTnegthick: return "";
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case WSTthicker: return "  ";
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case WSTNormal:
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default:
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return " ";
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}
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return " ";
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}
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QString JKQTMathTextEmptyBoxNode::Units2String(Units type)
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{
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switch(type) {
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case EBUem: return "em";
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case EBUex: return "ex";
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}
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return "?";
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}
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JKQTMathTextEmptyBoxNode::Units JKQTMathTextEmptyBoxNode::String2Units(QString type)
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{
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type=type.toLower().trimmed();
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if (type=="ex") return EBUex;
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if (type=="em") return EBUem;
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return EBUem;
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}
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double JKQTMathTextEmptyBoxNode::Units2PixelWidth(double value, Units unit, JKQTMathTextEnvironment currentEv, QPaintDevice *pd) const
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{
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const QFontMetricsF fm(currentEv.getFont(parentMathText), pd);
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if (unit==EBUem) {
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#if (QT_VERSION>=QT_VERSION_CHECK(5, 15, 0))
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const double em=fm.horizontalAdvance(QChar(0x2003));//currentEv.fontSize;
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#else
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const double em=fm.width(QChar(0x2003));//currentEv.fontSize;
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#endif
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return value*em;
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} else if (unit==EBUex) {
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const double ex=fm.xHeight();
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return value*ex;
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}
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return 0;
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}
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JKQTMathTextEmptyBoxNode::JKQTMathTextEmptyBoxNode(JKQTMathText *parent, double width_, Units widthUnit_, double height_, Units heightUnit_):
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JKQTMathTextNode(parent),
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width(width_), widthUnit(widthUnit_),
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height(height_),heightUnit(heightUnit_)
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{
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}
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JKQTMathTextEmptyBoxNode::~JKQTMathTextEmptyBoxNode()
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{
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}
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QString JKQTMathTextEmptyBoxNode::getTypeName() const
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{
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return QString("JKQTMathTextEmptyBoxNode(%1%2 x %3%4)").arg(getWidth()).arg(JKQTMathTextEmptyBoxNode::Units2String(getWidthUnit())).arg(getHeight()).arg(JKQTMathTextEmptyBoxNode::Units2String(getHeightUnit()));
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}
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bool JKQTMathTextEmptyBoxNode::toHtml(QString &html, JKQTMathTextEnvironment currentEv, JKQTMathTextEnvironment defaultEv)
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{
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return true;
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}
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JKQTMathTextEmptyBoxNode::Units JKQTMathTextEmptyBoxNode::getWidthUnit() const
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{
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return widthUnit;
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}
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double JKQTMathTextEmptyBoxNode::getWidth() const
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{
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return width;
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}
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JKQTMathTextEmptyBoxNode::Units JKQTMathTextEmptyBoxNode::getHeightUnit() const
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{
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return heightUnit;
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}
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double JKQTMathTextEmptyBoxNode::getHeight() const
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{
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return height;
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}
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double JKQTMathTextEmptyBoxNode::draw(QPainter &painter, double x, double y, JKQTMathTextEnvironment currentEv, const JKQTMathTextNodeSize *prevNodeSize)
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{
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doDrawBoxes(painter, x,y,currentEv);
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double width=0, bh=0, oh=0, sp=0;
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getSize(painter, currentEv, width, bh, oh, sp, prevNodeSize);
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return x+width;
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}
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void JKQTMathTextEmptyBoxNode::getSizeInternal(QPainter &painter, JKQTMathTextEnvironment currentEv, double &width, double &baselineHeight, double &overallHeight, double &strikeoutPos, const JKQTMathTextNodeSize */*prevNodeSize*/)
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{
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const QFontMetricsF fm(currentEv.getFont(parentMathText), painter.device());
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width=Units2PixelWidth(width, widthUnit, currentEv, painter.device());
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overallHeight=Units2PixelWidth(height, heightUnit, currentEv, painter.device());
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if (height>0) {
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baselineHeight=overallHeight;
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} else {
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baselineHeight=0;
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}
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strikeoutPos=fm.strikeOutPos();
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}
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