mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-10-01 02:35:48 -04:00
1214 lines
41 KiB
C++
1214 lines
41 KiB
C++
/****************************************************************
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* This file is distributed under the following license:
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*
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* Copyright (c) 2010, Thomas Kister
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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* ccr . 2016 Jan 30 . Change regular expression(s) for identifying
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* . . hotlinks in feral text.
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*
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****************************************************************/
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#include <QApplication>
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#include <QTextBrowser>
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#include <QtXml>
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#include <QBuffer>
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#include <QMessageBox>
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#include <QTextDocumentFragment>
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#include <qmath.h>
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#include <QUrl>
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#include "HandleRichText.h"
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#include "gui/RetroShareLink.h"
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#include "util/ObjectPainter.h"
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#include "util/imageutil.h"
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#include "util/rstime.h"
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#include <iostream>
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/**
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* The type of embedding we'd like to do
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*/
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enum EmbeddedType
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{
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Ahref, ///< into <a></a>
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Img ///< into <img/>
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};
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/**
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* Base class for storing information about a given kind of embedding.
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*
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* Its only constructor is protected so it is impossible to instantiate it, and
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* at the same time derived classes have to provide a type.
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*/
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class EmbedInHtml
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{
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protected:
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EmbedInHtml(EmbeddedType newType) : myType(newType) {}
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public:
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const EmbeddedType myType;
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QList<QRegExp> myREs;
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};
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/**
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* This class is used to store information for embedding links into <a></a> tags.
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*/
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class EmbedInHtmlAhref : public EmbedInHtml
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{
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public:
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EmbedInHtmlAhref() : EmbedInHtml(Ahref)
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{
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// The following regular expressions for finding URLs in
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// plain text are borrowed from https://regex101.com/r/eR9yG2/4
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//Modified to: (Adding \s to stop when query have space char else don't stop at end.)
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// ((?<=\s)(([a-z0-9.+-]+):)((\/\/)(\/|(((([^\/:@?&#\s]+)(:([^\/@?&#\s]+))?)@)?([^:\/?&#\s]+)(:([1-9][0-9]*))?)(?=[\/#$?]))))(([^#?\s]+)?(\?([^#\s]+))?(#([^\s]+))?([\s])?)
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// regAddress .|| .| || | .| | . . .| .| ..| .../regPath .| | . .| .| ./
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// regBef/reChar .|| .| || | .| | . . .| .| ..| ... regPathnam/| | . .regHash /regEnd/har
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// regScheme /regGrp5| || | .| | . . .| .| ..| ../ regSearch . /
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// |regS/ash || | .| | . . .| .| ..| .. regQuery/
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// regFileAuthHost .| | . . .| .| ..| ./
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// regAuthHost .| | . . .| .| ./regPosLk /
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// regUserPass .| | . . /regHost /regPort /
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// regUser /| | . .
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// regGrp12 . /
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// regPassCharse/
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//
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// to get all group captured.
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// Test patern: " https://user:password@example.com:8080/./api/api/../users/./get/22iohoife.extension?return=name&return=email&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3#test "
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QString regBeforeChar = ""; //"(?<=\\s)";//WARNING, Look Behind not supported by Qt
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QStringList regSchemes;
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// regSchemes.append("news:");
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// regSchemes.append("telnet:");
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// regSchemes.append("nntp:");
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// regSchemes.append("file:/");
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regSchemes.append("https?:");
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// regSchemes.append("ftps?:");
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// regSchemes.append("sftp:");
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// regSchemes.append("webcal:");
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regSchemes.append("retroshare:");
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QString regScheme = "(?:" + regSchemes.join(")|(?:") + ")";//2nd Group: "https:" //3rd group inside
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QString regSlash = "(\\/\\/)";//5th Group: "//"
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QString regUser = "([^\\/:@?&#\\s]+)";//10th Group: "user"
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QString regPassCharset = "([^\\/@?&#\\s]+)";//12th Group "password"
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QString regGrp12 = "(:" + regPassCharset + ")?"; // 11th Group: ":password"
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QString regUserPass = "((" + regUser + regGrp12 + ")@)?"; //8th Group: "user:password@" with 9th inside
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QString regHost = "([^:\\/?&#\\s]+)"; //13th Group: "example.com"
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QString regPort = "(:([1-9][0-9]*))?"; //14th Group: ":8080" with 15th inside
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QString regAuthHost = regUserPass + regHost + regPort; //7th Group: "user:password@example.com:8080"
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QString regPosLk = ""; //Positive Lookahead
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QString regFileAuthHost = "(\\/|" + regAuthHost + regPosLk + ")"; //6th Group: "user:password@example.com:8080" Could be "/" with "file:///"
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QString regGrp5 = "(" + regSlash + regFileAuthHost + ")"; //4th Group: "//user:password@example.com:8080"
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QString regAddress = "(" + regBeforeChar + regScheme + regGrp5 + ")"; //1rst Group: "https://user:password@example.com:8080"
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QString regPathName = "([^#?\\s]+)?"; //17th Group: "/./api/api/../users/./get/22iohoife.extension"
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QString regQuery = "([^#\\s]+)"; //19th Group: "return=name&return=email&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3"
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QString regSearch = "(\\?" + regQuery + ")?"; //18th Group: "?return=name&return=email&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3"
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QString regHash = "(#([^\\s]+))?"; //20th Group: "#test" 21th inside
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QString regEndChar = "";//"([\\s])?"; //22th Group: " "
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QString regPath = "(" + regPathName + regSearch + regHash + regEndChar +")"; //16th Group: "/./api/api/../users/./get/22iohoife.extension?return=name&return=email&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3&a[]=3#test"
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QString regUrlPath = regAddress + regPath;
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QStringList regHotLinkFinders;
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regHotLinkFinders.append(regUrlPath);
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while (!regHotLinkFinders.isEmpty()) {
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myREs.append(QRegExp(regHotLinkFinders.takeFirst(), Qt::CaseInsensitive));
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};
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}
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};
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/**
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* This class is used to store information for embedding smileys into <img/> tags.
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*
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* By default the QRegExp the variables are empty, which means it must be
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* filled at runtime, typically when the smileys set is loaded. It can be
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* either done by hand or by using one of the helper methods available.
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*
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* Note: The QHash uses only *one* smiley per key (unlike soon-to-be-upgraded
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* code out there).
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*/
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class EmbedInHtmlImg : public EmbedInHtml
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{
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public:
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EmbedInHtmlImg() : EmbedInHtml(Img) {}
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QHash<QString,QString> smileys;
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};
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/* global instance for embedding emoticons */
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static EmbedInHtmlImg defEmbedImg;
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RsHtml::RsHtml()
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{
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}
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void RsHtml::initEmoticons(const QHash<QString, QPair<QVector<QString>, QHash<QString, QString> > >& hash)
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{
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//add rules for standard emoticons
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QString genericpattern;
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genericpattern += "(?:^|\\s)(:\\w{1,40}:)(?:$|\\s)|"; //generic rule for :emoji_name:
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genericpattern += "(?:^|\\s)(\\(\\w{1,40}\\))(?:$|\\s)"; //generic rule for (emoji_name)
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QRegExp genericrx(genericpattern);
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genericrx.setMinimal(true);
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QString newRE;
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for(QHash<QString, QPair<QVector<QString>, QHash<QString, QString> > >::const_iterator groupit = hash.begin(); groupit != hash.end(); ++groupit) {
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QHash<QString,QString> group = groupit.value().second;
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for(QHash<QString,QString>::const_iterator it = group.begin(); it != group.end(); ++it)
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foreach(QString smile, it.key().split("|")) {
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if (smile.isEmpty()) {
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continue;
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}
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defEmbedImg.smileys.insert(smile, it.value());
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//check if smiley is using standard format :new-format: or (old-format) and don't make a new regexp for it
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if(!genericrx.exactMatch(smile)) {
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// add space around smileys
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newRE += "(?:^|\\s)(" + QRegExp::escape(smile) + ")(?:$|\\s)|";
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// explanations:
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// (?:^|\s)(*smiley*)(?:$|\s)
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//
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// (?:^|\s) Non-capturing group
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// 1st Alternative: ^
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// ^ assert position at start of the string
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// 2nd Alternative: \s
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// \s match any white space character [\r\n\t\f ]
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//
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// 1st Capturing group (*smiley*)
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// *smiley* matches the characters *smiley* literally (case sensitive)
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//
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// (?:$|\s) Non-capturing group
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// 1st Alternative: $
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// $ assert position at end of the string
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// 2nd Alternative: \s
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// \s match any white space character [\r\n\t\f ]
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/*
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* TODO
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* a better version is:
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* (?<=^|\s)(*smile*)(?=$|\s) using the lookbehind/lookahead operator instead of non-capturing groups.
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* This solves the problem that spaces are matched, too (see workaround in RsHtml::embedHtml)
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* This is not supported by Qt4!
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*/
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}
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}
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}
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QRegExp emojimatcher(newRE + genericpattern);
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emojimatcher.setMinimal(true);
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defEmbedImg.myREs.append(emojimatcher);
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}
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bool RsHtml::canReplaceAnchor(QDomDocument &/*doc*/, QDomElement &/*element*/, const RetroShareLink &link)
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{
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switch (link.type()) {
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case RetroShareLink::TYPE_UNKNOWN:
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case RetroShareLink::TYPE_FILE:
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case RetroShareLink::TYPE_PERSON:
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case RetroShareLink::TYPE_FORUM:
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case RetroShareLink::TYPE_CHANNEL:
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case RetroShareLink::TYPE_SEARCH:
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case RetroShareLink::TYPE_MESSAGE:
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case RetroShareLink::TYPE_EXTRAFILE:
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case RetroShareLink::TYPE_PRIVATE_CHAT:
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case RetroShareLink::TYPE_PUBLIC_MSG:
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case RetroShareLink::TYPE_POSTED:
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case RetroShareLink::TYPE_IDENTITY:
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case RetroShareLink::TYPE_FILE_TREE:
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case RetroShareLink::TYPE_CHAT_ROOM:
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// not yet implemented
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break;
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case RetroShareLink::TYPE_CERTIFICATE:
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return true;
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}
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return false;
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}
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void RsHtml::anchorTextForImg(QDomDocument &/*doc*/, QDomElement &/*element*/, const RetroShareLink &link, QString &text)
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{
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text = link.niceName();
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}
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void RsHtml::anchorStylesheetForImg(QDomDocument &/*doc*/, QDomElement &/*element*/, const RetroShareLink &link, QString &styleSheet)
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{
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switch (link.type()) {
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case RetroShareLink::TYPE_UNKNOWN:
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case RetroShareLink::TYPE_FILE:
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case RetroShareLink::TYPE_PERSON:
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case RetroShareLink::TYPE_FORUM:
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case RetroShareLink::TYPE_CHANNEL:
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case RetroShareLink::TYPE_SEARCH:
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case RetroShareLink::TYPE_MESSAGE:
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case RetroShareLink::TYPE_EXTRAFILE:
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case RetroShareLink::TYPE_PRIVATE_CHAT:
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case RetroShareLink::TYPE_PUBLIC_MSG:
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case RetroShareLink::TYPE_POSTED:
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case RetroShareLink::TYPE_IDENTITY:
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case RetroShareLink::TYPE_FILE_TREE:
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case RetroShareLink::TYPE_CHAT_ROOM:
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// not yet implemented
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break;
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case RetroShareLink::TYPE_CERTIFICATE:
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styleSheet = "QPushButton{ border-image: url(:/images/btn_blue.png) ;border-width: 4;padding: 0px 6px;font-size: 12px;color: white;} QPushButton:hover{ border-image: url(:/images/btn_blue_hover.png) ;}";
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break;
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}
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}
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void RsHtml::replaceAnchorWithImg(QDomDocument &doc, QDomElement &element, QTextDocument *textDocument, const RetroShareLink &link)
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{
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if (!textDocument) {
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return;
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}
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if (!link.valid()) {
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return;
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}
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if (element.childNodes().length() != 1) {
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return;
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}
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if (!canReplaceAnchor(doc, element, link)) {
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return;
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}
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QString imgText;
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anchorTextForImg(doc, element, link, imgText);
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QString styleSheet;
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anchorStylesheetForImg(doc, element, link, styleSheet);
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QDomNode childNode = element.firstChild();
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/* build resource name */
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QString resourceName = QString("%1_%2.png").arg(link.type()).arg(imgText);
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if (!textDocument->resource(QTextDocument::ImageResource, QUrl(resourceName)).isValid()) {
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/* draw a button on a pixmap */
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QPixmap pixmap;
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ObjectPainter::drawButton(imgText, styleSheet, pixmap);
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/* add the image to the resource cache of the text document */
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textDocument->addResource(QTextDocument::ImageResource, QUrl(resourceName), QVariant(pixmap));
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}
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element.removeChild(childNode);
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/* replace text of the anchor with <img> */
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QDomElement img = doc.createElement("img");
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img.setAttribute("src", resourceName);
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element.appendChild(img);
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}
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int RsHtml::indexInWithValidation(QRegExp &rx, const QString &text, EmbedInHtml &embedInfos, int pos)
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{
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int index = rx.indexIn(text, pos);
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if(index == -1 || embedInfos.myType != Img) return index;
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const EmbedInHtmlImg& embedImg = static_cast<const EmbedInHtmlImg&>(embedInfos);
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while((index = rx.indexIn(text, pos)) != -1) {
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if(embedImg.smileys.contains(rx.cap(0).trimmed()))
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return index;
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else
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++pos;
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}
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return -1;
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}
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/**
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* Parses a DOM tree and replaces text by HTML tags.
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* The tree is traversed depth-first, but only through children of Element type
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* nodes. Any other kind of node is terminal.
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*
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* If the node is of type Text, its data is checked against the user-provided
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* regular expression(s). If there is a match, the text is cut in three parts: the
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* preceding part that will be inserted before, the part to be replaced, and the
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* following part which will be itself checked against the regular expression.
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*
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* The part to be replaced is sent to a user-provided functor that will create
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* the necessary embedding and return a new Element node to be inserted.
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*
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* @param[in] doc The whole DOM tree, necessary to create new nodes
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* @param[in,out] currentElement The current node (which is of type Element)
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* @param[in] embedInfos The regular expression(s) and the type of embedding to use
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*/
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void RsHtml::embedHtml(QTextDocument *textDocument, QDomDocument& doc, QDomElement& currentElement, EmbedInHtml& embedInfos, ulong flag)
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{
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QDomNodeList children = currentElement.childNodes();
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for(uint index = 0; index < (uint)children.length(); index++) {
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QDomNode node = children.item(index);
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if(node.isElement()) {
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// child is an element, we skip it if it's an <a> tag
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QDomElement element = node.toElement();
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if(element.tagName().toLower() == "head") {
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// skip it
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} else if(element.tagName().toLower() == "style") {
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// skip it
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} else if (element.tagName().toLower() == "a") {
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// skip it
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if (embedInfos.myType == Ahref) {
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// but add title if not available
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if (element.attribute("title").isEmpty()) {
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RetroShareLink link(element.attribute("href"));
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if (link.valid()) {
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QString title = link.title();
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if (!title.isEmpty()) {
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element.setAttribute("title", title);
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}
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if (textDocument && (flag & RSHTML_FORMATTEXT_REPLACE_LINKS)) {
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replaceAnchorWithImg(doc, element, textDocument, link);
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}
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}
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else
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{
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QUrl url(element.attribute("href"));
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if(url.isValid())
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{
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QString title = url.host();
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if (!title.isEmpty()) {
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element.setAttribute("title", title);
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}
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if (textDocument && (flag & RSHTML_FORMATTEXT_REPLACE_LINKS)) {
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replaceAnchorWithImg(doc, element, textDocument, url);
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}
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}
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}
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} else {
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if (textDocument && (flag & RSHTML_FORMATTEXT_REPLACE_LINKS)) {
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RetroShareLink link(element.attribute("href"));
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if (link.valid()) {
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replaceAnchorWithImg(doc, element, textDocument, link);
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}
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}
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}
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}
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} else {
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embedHtml(textDocument, doc, element, embedInfos, flag);
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}
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}
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else if(node.isText()) {
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// child is a text, we parse it
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QString tempText = node.toText().data();
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for (int patNdx = 0; patNdx < embedInfos.myREs.size(); ++patNdx) {
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QRegExp myRE = embedInfos.myREs.at(patNdx);
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if(myRE.pattern().length() == 0) // we'll get stuck with an empty regexp
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return;
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int nextPos = 0;
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if((nextPos = indexInWithValidation(myRE, tempText, embedInfos)) == -1)
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continue;
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// there is at least one link inside, we start replacing
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int currentPos = 0;
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do {
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// if nextPos == 0 it means the text begins by a link
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if(nextPos > 0) {
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QDomText textPart = doc.createTextNode(tempText.mid(currentPos, nextPos - currentPos));
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currentElement.insertBefore(textPart, node);
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index++;
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}
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// inserted tag
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QDomElement insertedTag;
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switch(embedInfos.myType) {
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case Ahref:
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{
|
|
insertedTag = doc.createElement("a");
|
|
insertedTag.setAttribute("href", myRE.cap(0));
|
|
insertedTag.appendChild(doc.createTextNode(myRE.cap(0)));
|
|
|
|
RetroShareLink link(myRE.cap(0));
|
|
if (link.valid()) {
|
|
QString title = link.title();
|
|
if (!title.isEmpty()) {
|
|
insertedTag.setAttribute("title", title);
|
|
}
|
|
|
|
if (textDocument && (flag & RSHTML_FORMATTEXT_REPLACE_LINKS)) {
|
|
replaceAnchorWithImg(doc, insertedTag, textDocument, link);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
QUrl url(myRE.cap(0));
|
|
if(url.isValid())
|
|
{
|
|
QString title = url.host();
|
|
if (!title.isEmpty()) {
|
|
insertedTag.setAttribute("title", title);
|
|
}
|
|
if (textDocument && (flag & RSHTML_FORMATTEXT_REPLACE_LINKS)) {
|
|
replaceAnchorWithImg(doc, insertedTag, textDocument, url);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case Img:
|
|
{
|
|
insertedTag = doc.createElement("img");
|
|
const EmbedInHtmlImg& embedImg = static_cast<const EmbedInHtmlImg&>(embedInfos);
|
|
// myRE.cap(0) may include spaces at the end/beginning -> trim!
|
|
insertedTag.setAttribute("src", embedImg.smileys[myRE.cap(0).trimmed()]);
|
|
/*
|
|
* NOTE
|
|
* Trailing spaces are matched, too. This leads to myRE.matchedLength() being incorrect.
|
|
* This hack reduces nextPos by one so that the new value of currentPos is calculated corretly.
|
|
* This is needed to match multiple smileys since the leading whitespace in front of a smiley is required!
|
|
*
|
|
* This can be avoided by using Qt5 (see comment in RsHtml::initEmoticons)
|
|
*
|
|
* NOTE
|
|
* Preceding spaces are also matched and removed.
|
|
*/
|
|
if(myRE.cap(0).endsWith(' '))
|
|
nextPos--;
|
|
}
|
|
break;
|
|
}
|
|
|
|
currentElement.insertBefore(insertedTag, node);
|
|
index++;
|
|
|
|
currentPos = nextPos + myRE.matchedLength();
|
|
} while((nextPos = indexInWithValidation(myRE, tempText, embedInfos, currentPos)) != -1);
|
|
|
|
// text after the last link, only if there's one, don't touch the index
|
|
// otherwise decrement the index because we're going to remove node
|
|
if(currentPos < tempText.length()) {
|
|
QDomText textPart = doc.createTextNode(tempText.mid(currentPos));
|
|
currentElement.insertBefore(textPart, node);
|
|
}
|
|
else
|
|
index--;
|
|
|
|
currentElement.removeChild(node);
|
|
break;
|
|
// We'd better not expect that
|
|
// subsequent hotlink patterns
|
|
// wouldn't also match replacements
|
|
// we've already made. They might, so
|
|
// skip 'em to be safe.
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Save space and tab out of bracket that XML loose.
|
|
*
|
|
* @param[in] text The text to save space.
|
|
* @return Text with space saved.
|
|
*/
|
|
static QString saveSpace(const QString text)
|
|
{
|
|
QString savedSpaceText=text;
|
|
bool outBrackets=false, echapChar=false;
|
|
QString keyName = "";
|
|
bool getKeyName = false;
|
|
bool firstOutBracket = false;
|
|
|
|
for(int i=0;i<savedSpaceText.length();i++){
|
|
QChar cursChar=savedSpaceText.at(i);
|
|
|
|
if(getKeyName || (!outBrackets && keyName.isEmpty())){
|
|
if((cursChar==QLatin1Char(' ')) || (cursChar==QLatin1Char('>'))) {
|
|
getKeyName=keyName.isEmpty();
|
|
} else {
|
|
keyName.append(cursChar.toLower());
|
|
}
|
|
}
|
|
|
|
if(cursChar==QLatin1Char('>')) {
|
|
if(!echapChar && i>0) {outBrackets=true; firstOutBracket=true;}
|
|
} else if(cursChar==QLatin1Char('\t')) {
|
|
if(outBrackets && firstOutBracket && (keyName!="style")) savedSpaceText.replace(i, 1, " ");
|
|
} else if(cursChar==QLatin1Char(' ')) {
|
|
if(outBrackets && firstOutBracket && (keyName!="style")) savedSpaceText.replace(i, 1, " ");
|
|
} else if(cursChar==QChar(0xA0)) {
|
|
if(outBrackets && firstOutBracket && (keyName!="style")) savedSpaceText.replace(i, 1, " ");
|
|
} else if(cursChar==QLatin1Char('<')) {
|
|
if(!echapChar) {outBrackets=false; getKeyName=true; keyName.clear();}
|
|
} else firstOutBracket=false;
|
|
echapChar=(cursChar==QLatin1Char('\\'));
|
|
|
|
}
|
|
|
|
return savedSpaceText;
|
|
}
|
|
|
|
QString RsHtml::formatText(QTextDocument *textDocument, const QString &text, ulong flag, const QColor &backgroundColor, qreal desiredContrast, int desiredMinimumFontSize)
|
|
{
|
|
if (flag == 0 || text.isEmpty()) {
|
|
// nothing to do
|
|
return text;
|
|
}
|
|
|
|
QString formattedText=text;
|
|
//remove all prepend char that make doc.setContent() fail
|
|
formattedText.remove(0,text.indexOf("<"));
|
|
// Save Space and Tab because doc loose it.
|
|
formattedText=saveSpace(formattedText);
|
|
|
|
QString errorMsg; int errorLine; int errorColumn;
|
|
|
|
QDomDocument doc;
|
|
if (doc.setContent(formattedText, &errorMsg, &errorLine, &errorColumn) == false) {
|
|
|
|
// convert text with QTextBrowser
|
|
QTextBrowser textBrowser;
|
|
textBrowser.setText(text);
|
|
formattedText=textBrowser.toHtml();
|
|
formattedText.remove(0,formattedText.indexOf("<"));
|
|
formattedText=saveSpace(formattedText);
|
|
doc.setContent(formattedText, &errorMsg, &errorLine, &errorColumn);
|
|
|
|
}
|
|
|
|
QDomElement body = doc.documentElement();
|
|
if (flag & RSHTML_FORMATTEXT_EMBED_SMILEYS) {
|
|
embedHtml(textDocument, doc, body, defEmbedImg, flag);
|
|
}
|
|
if (flag & RSHTML_FORMATTEXT_EMBED_LINKS) {
|
|
EmbedInHtmlAhref defEmbedAhref;
|
|
embedHtml(textDocument, doc, body, defEmbedAhref, flag);
|
|
}
|
|
|
|
formattedText = doc.toString(-1); // -1 removes any annoying carriage return misinterpreted by QTextEdit
|
|
|
|
if (flag & RSHTML_OPTIMIZEHTML_MASK) {
|
|
optimizeHtml(formattedText, flag, backgroundColor, desiredContrast, desiredMinimumFontSize);
|
|
}
|
|
|
|
return formattedText;
|
|
}
|
|
|
|
static void findElements(QDomDocument& doc, QDomElement& currentElement, const QString& nodeName, const QString& nodeAttribute, QStringList &elements)
|
|
{
|
|
if(nodeName.isEmpty()) {
|
|
return;
|
|
}
|
|
|
|
QDomNodeList children = currentElement.childNodes();
|
|
for (uint index = 0; index < (uint)children.length(); index++) {
|
|
QDomNode node = children.item(index);
|
|
if (node.isElement()) {
|
|
QDomElement element = node.toElement();
|
|
if (QString::compare(element.tagName(), nodeName, Qt::CaseInsensitive) == 0) {
|
|
if (nodeAttribute.isEmpty()) {
|
|
// use text
|
|
elements.append(element.text());
|
|
} else {
|
|
QString attribute = element.attribute(nodeAttribute);
|
|
if (attribute.isEmpty() == false) {
|
|
elements.append(attribute);
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
findElements(doc, element, nodeName, nodeAttribute, elements);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool RsHtml::findAnchors(const QString &text, QStringList& urls)
|
|
{
|
|
QString errorMsg; int errorLine; int errorColumn;
|
|
QDomDocument doc;
|
|
if (doc.setContent(text, &errorMsg, &errorLine, &errorColumn) == false) {
|
|
// convert text with QTextBrowser
|
|
QTextBrowser textBrowser;
|
|
textBrowser.setText(text);
|
|
doc.setContent(textBrowser.toHtml(), &errorMsg, &errorLine, &errorColumn);
|
|
}
|
|
|
|
QDomElement body = doc.documentElement();
|
|
findElements(doc, body, "a", "href", urls);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void removeElement(QDomElement& parentElement, QDomElement& element)
|
|
{
|
|
QDomNodeList children = element.childNodes();
|
|
while (children.length() > 0) {
|
|
QDomNode childElement = element.removeChild(children.item(children.length() - 1));
|
|
parentElement.insertAfter(childElement, element);
|
|
}
|
|
parentElement.removeChild(element);
|
|
}
|
|
|
|
static qreal linearizeColorComponent(qreal v)
|
|
{
|
|
if (v <= 0.03928) return v/12.92;
|
|
else return pow((v+0.055)/1.055, 2.4);
|
|
}
|
|
|
|
static qreal getRelativeLuminance(const QColor &c)
|
|
{
|
|
qreal r = linearizeColorComponent(c.redF()) * 0.2126;
|
|
qreal g = linearizeColorComponent(c.greenF()) * 0.7152;
|
|
qreal b = linearizeColorComponent(c.blueF()) * 0.0722;
|
|
return r+g+b;
|
|
}
|
|
|
|
/**
|
|
* @brief Compute the contrast between two relative luminances.
|
|
* See: http://www.w3.org/TR/2012/NOTE-WCAG20-TECHS-20120103/G18
|
|
* @param lum1, lum2 Relative luminances returned by getRelativeLuminance().
|
|
* @return Contrast between 1 and 21.
|
|
*/
|
|
static qreal getContrastRatio(qreal lum1, qreal lum2)
|
|
{
|
|
if (lum2 > lum1) {
|
|
qreal t = lum1;
|
|
lum1 = lum2;
|
|
lum2 = t;
|
|
}
|
|
return (lum1+0.05)/(lum2+0.05);
|
|
}
|
|
|
|
/**
|
|
* @brief Find a color with the same hue that provides the desired contrast with bglum.
|
|
* @param[in,out] val Name of the original color. Will be modified.
|
|
* @param bglum Background's relative luminance as returned by getRelativeLuminance().
|
|
* @param desiredContrast Contrast to get.
|
|
*/
|
|
static void findBestColor(QString &val, qreal bglum, qreal desiredContrast)
|
|
{
|
|
#if QT_VERSION < 0x040600
|
|
// missing methods on class QColor
|
|
Q_UNUSED(val);
|
|
Q_UNUSED(bglum);
|
|
Q_UNUSED(desiredContrast);
|
|
#else
|
|
// Change text color to get a good contrast with the background
|
|
QColor c(val);
|
|
qreal lum = ::getRelativeLuminance(c);
|
|
|
|
// Keep text color darker/brighter than the bg if possible
|
|
qreal lowContrast = ::getContrastRatio(bglum, 0.0);
|
|
qreal highContrast = ::getContrastRatio(bglum, 1.0);
|
|
bool searchDown = (lum <= bglum && lowContrast >= desiredContrast)
|
|
|| (lum > bglum && highContrast < desiredContrast && lowContrast >= highContrast);
|
|
|
|
// There's no such thing as too much contrast on a bright background,
|
|
// but on a dark background it creates haloing which makes text hard to read.
|
|
// So we enforce desired contrast when the bg is dark.
|
|
|
|
if (!searchDown || ::getContrastRatio(lum, bglum) < desiredContrast) {
|
|
// Bisection search of the correct "lightness" to get the desired contrast
|
|
qreal minl = searchDown ? 0.0 : bglum;
|
|
qreal maxl = searchDown ? bglum : 1.0;
|
|
do {
|
|
QColor d = c;
|
|
qreal midl = (minl+maxl)/2.0;
|
|
d.setHslF(c.hslHueF(), c.hslSaturationF(), midl);
|
|
qreal lum = ::getRelativeLuminance(d);
|
|
if ((::getContrastRatio(lum, bglum) < desiredContrast) ^ searchDown ) {
|
|
minl = midl;
|
|
}
|
|
else {
|
|
maxl = midl;
|
|
}
|
|
} while (maxl - minl > 0.01);
|
|
c.setHslF(c.hslHueF(), c.hslSaturationF(), minl);
|
|
val = c.name();
|
|
}
|
|
#endif // QT_VERSION < 0x040600
|
|
}
|
|
|
|
/**
|
|
* @brief optimizeHtml: Optimize HTML Text in DomDocument to reduce size
|
|
* @param doc: QDomDocument containing Text to optimize
|
|
* @param currentElement: Current element optimized
|
|
* @param stylesList: List where to save all differents styles used in text
|
|
* @param knownStyle: List of known styles
|
|
*/
|
|
static void optimizeHtml(QDomDocument& doc
|
|
, QDomElement& currentElement
|
|
, QHash<QString, QStringList> &stylesList
|
|
, QHash<QString, QString> &knownStyle)
|
|
{
|
|
if (doc.documentElement().namedItem("style").toElement().attributeNode("RSOptimized").isAttr()) {
|
|
//Already optimized only get StyleList
|
|
QDomElement styleElem = doc.documentElement().namedItem("style").toElement();
|
|
if (!styleElem.isElement()) return; //Not an element so a bad message.
|
|
QDomAttr styleAttr = styleElem.attributeNode("RSOptimized");
|
|
if (!styleAttr.isAttr()) return; //Not an attribute so a bad message.
|
|
QString version = styleAttr.value();
|
|
if (version == "v2") {
|
|
|
|
QStringList allStyles = styleElem.text().split('}');
|
|
foreach (QString style, allStyles){
|
|
QStringList pair = style.split('{');
|
|
if (pair.length()!=2) return; //Malformed style list so a bad message or last item.
|
|
QString keyvalue = pair.at(1);
|
|
keyvalue.replace(";","");
|
|
QStringList classUsingIt(pair.at(0).split(','));
|
|
QStringList exported ;
|
|
foreach (QString keyVal, classUsingIt) {
|
|
if(!keyVal.trimmed().isEmpty()) {
|
|
exported.append(keyVal.trimmed().replace(".",""));
|
|
}
|
|
}
|
|
|
|
stylesList.insert(keyvalue, exported);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (currentElement.tagName().toLower() == "html") {
|
|
// change <html> to <span>
|
|
currentElement.setTagName("span");
|
|
}
|
|
|
|
QDomNode styleNode;
|
|
bool addBR = false;
|
|
|
|
QDomNodeList children = currentElement.childNodes();
|
|
for (uint index = 0; index < (uint)children.length(); ) {
|
|
QDomNode node = children.item(index);
|
|
if (node.isElement()) {
|
|
QDomElement element = node.toElement();
|
|
styleNode = node.attributes().namedItem("style");
|
|
|
|
// not <p>
|
|
if (addBR && element.tagName().toLower() != "p") {
|
|
// add <br> after a removed <p> but not before a <p>
|
|
QDomElement elementBr = doc.createElement("br");
|
|
currentElement.insertBefore(elementBr, element);
|
|
addBR = false;
|
|
++index;
|
|
}
|
|
|
|
// <body>
|
|
if (element.tagName().toLower() == "body") {
|
|
if (element.attributes().length() == 0) {
|
|
// remove <body> without attributes
|
|
removeElement(currentElement, element);
|
|
// no ++index;
|
|
continue;
|
|
}
|
|
// change <body> to <span>
|
|
element.setTagName("span");
|
|
}
|
|
|
|
// <head>
|
|
if (element.tagName().toLower() == "head") {
|
|
// remove <head>
|
|
currentElement.removeChild(node);
|
|
// no ++index;
|
|
continue;
|
|
}
|
|
|
|
//hidden text in a
|
|
if (element.tagName().toLower() == "a") {
|
|
if(element.hasAttribute("href")){
|
|
QString href = element.attribute("href", "");
|
|
if(href.startsWith("hidden:")){
|
|
//this text should be hidden and appear in title
|
|
//we need this trick, because QTextEdit doesn't export the title attribute
|
|
QString title = href.remove(0, QString("hidden:").length());
|
|
QString text = element.text();
|
|
element.setTagName("span");
|
|
element.removeAttribute("href");
|
|
QDomNodeList c = element.childNodes();
|
|
for(int i = 0; i < c.count(); i++){
|
|
element.removeChild(c.at(i));
|
|
};
|
|
element.setAttribute(QString("title"), title);
|
|
QDomText textnode = doc.createTextNode(text);
|
|
element.appendChild(textnode);
|
|
}
|
|
}
|
|
}
|
|
|
|
// iterate children
|
|
optimizeHtml(doc, element, stylesList, knownStyle);
|
|
|
|
// <p>
|
|
if (element.tagName().toLower() == "p") {
|
|
// <p style="...">
|
|
if (styleNode.isAttr()) {
|
|
QString style = styleNode.toAttr().value().simplified().trimmed();
|
|
style.replace("margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px;", "margin:0px 0px 0px 0px;");
|
|
style.replace("; ", ";");
|
|
if (style == "margin:0px 0px 0px 0px;-qt-block-indent:0;text-indent:0px;"
|
|
|| style.startsWith("-qt-paragraph-type:empty;margin:0px 0px 0px 0px;-qt-block-indent:0;text-indent:0px;")) {
|
|
|
|
if (addBR) {
|
|
// add <br> after a removed <p> but not before a removed <p>
|
|
QDomElement elementBr = doc.createElement("br");
|
|
currentElement.insertBefore(elementBr, element);
|
|
++index;
|
|
}
|
|
// remove Qt standard <p> or empty <p>
|
|
index += element.childNodes().length();
|
|
removeElement(currentElement, element);
|
|
// do not add extra <br> after empty paragraph, the paragraph already contains one
|
|
addBR = ! style.startsWith("-qt-paragraph-type:empty");
|
|
continue;
|
|
}
|
|
|
|
}
|
|
addBR = false;
|
|
}
|
|
// Compress style attribute
|
|
if (styleNode.isAttr()) {
|
|
QDomAttr styleAttr = styleNode.toAttr();
|
|
QString style = styleAttr.value().simplified().trimmed();
|
|
style.replace("margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px;", "margin:0px 0px 0px 0px;");
|
|
style.replace("; ", ";");
|
|
|
|
QString className = knownStyle.value(style);
|
|
if (className.isEmpty()) {
|
|
// Create a new class
|
|
className = QString("S%1").arg(knownStyle.count());
|
|
knownStyle.insert(style, className);
|
|
|
|
// Now add this for each attribute values
|
|
QStringList styles = style.split(';');
|
|
foreach (QString pair, styles) {
|
|
pair.replace(" ","");
|
|
if (!pair.isEmpty()) {
|
|
QStringList& stylesListItem = stylesList[pair];
|
|
|
|
//Add the new class to this value
|
|
stylesListItem.push_back(className);
|
|
}
|
|
}
|
|
}
|
|
style.clear();
|
|
|
|
node.attributes().removeNamedItem("style");
|
|
styleNode.clear();
|
|
|
|
if (!className.isEmpty()) {
|
|
QDomNode classNode = doc.createAttribute("class");
|
|
classNode.setNodeValue(className);
|
|
node.attributes().setNamedItem(classNode);
|
|
}
|
|
}
|
|
}
|
|
++index;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief styleCreate: Add styles filtered in QDomDocument.
|
|
* @param doc: QDomDocument containing all text formatted
|
|
* @param stylesList: List of all styles recognized
|
|
* @param flag: Bitfield of RSHTML_FORMATTEXT_* constants (they must be part of
|
|
* RSHTML_OPTIMIZEHTML_MASK).
|
|
* @param bglum: Luminance background color of the widget where the text will be
|
|
* displayed. Needed only if RSHTML_FORMATTEXT_FIX_COLORS
|
|
* is passed inside flag.
|
|
* @param desiredContrast: Minimum contrast between text and background color,
|
|
* between 1 and 21.
|
|
* @param desiredMinimumFontSize: Minimum font size.
|
|
*/
|
|
static void styleCreate(QDomDocument& doc
|
|
, QHash<QString, QStringList>& stylesList
|
|
, unsigned int flag
|
|
, qreal bglum
|
|
, qreal desiredContrast
|
|
, int desiredMinimumFontSize)
|
|
{
|
|
QDomElement styleElem;
|
|
do{
|
|
if (doc.documentElement().namedItem("style").toElement().attributeNode("RSOptimized").isAttr()) {
|
|
QDomElement ele = doc.documentElement().namedItem("style").toElement();
|
|
//Remove child before filter
|
|
if (!ele.isElement()) break; //Not an element so a bad message.
|
|
QDomAttr styleAttr = ele.attributeNode("RSOptimized");
|
|
if (!styleAttr.isAttr()) break; //Not an attribute so a bad message.
|
|
QString version = styleAttr.value();
|
|
if (version == "v2") {
|
|
styleElem = ele;
|
|
}
|
|
}
|
|
}while (false); //for break
|
|
|
|
if(!styleElem.isElement()) {
|
|
styleElem = doc.createElement("style");
|
|
// Creation of Style class list: <style type="text/css">
|
|
QDomAttr styleAttr;
|
|
styleAttr = doc.createAttribute("type");
|
|
styleAttr.setValue("text/css");
|
|
styleElem.attributes().setNamedItem(styleAttr);
|
|
QDomAttr optAttr;
|
|
optAttr = doc.createAttribute("RSOptimized");
|
|
optAttr.setValue("v2");
|
|
styleElem.attributes().setNamedItem(optAttr);
|
|
if (flag & RSHTML_FORMATTEXT_NO_EMBED) {
|
|
QDomAttr noEmbedAttr;
|
|
noEmbedAttr = doc.createAttribute("NoEmbed");
|
|
noEmbedAttr.setValue("true");
|
|
styleElem.attributes().setNamedItem(noEmbedAttr);
|
|
}
|
|
}
|
|
|
|
while(styleElem.childNodes().count()>0) {
|
|
styleElem.removeChild(styleElem.firstChild());
|
|
}
|
|
|
|
QString style = "";
|
|
|
|
QHashIterator<QString, QStringList> it(stylesList);
|
|
while(it.hasNext()) {
|
|
it.next();
|
|
const QStringList& classUsingIt ( it.value()) ;
|
|
bool first = true;
|
|
foreach(QString className, classUsingIt) {
|
|
if (!className.trimmed().isEmpty()) {
|
|
style += QString(first?".":",.") + className;// + " ";
|
|
first = false;
|
|
}
|
|
}
|
|
|
|
QStringList keyvalue = it.key().split(':');
|
|
if (keyvalue.length() == 2) {
|
|
QString key = keyvalue.at(0).trimmed();
|
|
QString val = keyvalue.at(1).trimmed();
|
|
|
|
if (key == "font-size") {
|
|
QRegExp re("(\\d+)(\\D*)");
|
|
if (re.indexIn(val) != -1) {
|
|
bool ok; int iVal = re.cap(1).toInt(&ok);
|
|
if (ok && (iVal < desiredMinimumFontSize)) {
|
|
val = QString::number(desiredMinimumFontSize) + re.cap(2);
|
|
}
|
|
}
|
|
}
|
|
if ((flag & RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY && key == "font-family") ||
|
|
(flag & RSHTML_FORMATTEXT_REMOVE_FONT_SIZE && key == "font-size") ||
|
|
(flag & RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT && key == "font-weight") ||
|
|
(flag & RSHTML_FORMATTEXT_REMOVE_FONT_STYLE && key == "font-style")) {
|
|
continue;
|
|
}
|
|
|
|
if (flag & RSHTML_FORMATTEXT_REMOVE_COLOR) {
|
|
if (key == "color") {
|
|
continue;
|
|
}
|
|
} else if (flag & RSHTML_FORMATTEXT_FIX_COLORS) {
|
|
if (key == "color") {
|
|
findBestColor(val, bglum, desiredContrast);
|
|
}
|
|
}
|
|
|
|
if (flag & (RSHTML_FORMATTEXT_REMOVE_COLOR | RSHTML_FORMATTEXT_FIX_COLORS)) {
|
|
if (key == "background" || key == "background-color") {
|
|
// Remove background color because if we change the text color,
|
|
// it can become unreadable on the original background.
|
|
// Also, FIX_COLORS is intended to display text on the default
|
|
// background color of the operating system.
|
|
continue;
|
|
}
|
|
}
|
|
|
|
//.S1 .S2 .S4 {font-family:'Sans';}
|
|
style += "{" + key + ":" + val + ";}";
|
|
} else {
|
|
style += "{" + it.key() + ";}\n";
|
|
}
|
|
}
|
|
|
|
QDomText styleText = doc.createTextNode(style);
|
|
styleElem.appendChild(styleText);
|
|
|
|
//Create a Body element to be trunk, and doc could open it.
|
|
QDomElement trunk = doc.createElement("body");
|
|
trunk.appendChild(styleElem);
|
|
while (!doc.firstChild().isNull()){
|
|
trunk.appendChild(doc.firstChild().cloneNode());
|
|
doc.removeChild(doc.firstChild());
|
|
}
|
|
doc.appendChild(trunk);
|
|
|
|
}
|
|
|
|
void RsHtml::optimizeHtml(QTextEdit *textEdit, QString &text, unsigned int flag /*= 0*/)
|
|
{
|
|
if (textEdit->toHtml() == QTextDocument(textEdit->toPlainText()).toHtml()) {
|
|
text = textEdit->toPlainText();
|
|
//std::cerr << "Optimized text to " << text.length() << " bytes , instead of " << textEdit->toHtml().length() << std::endl;
|
|
return;
|
|
}
|
|
|
|
text = textEdit->toHtml();
|
|
|
|
//std::cerr << "Optimized text from " << text.length() << " bytes , into " ;
|
|
|
|
optimizeHtml(text, flag);
|
|
|
|
//std::cerr << text.length() << " bytes" << std::endl;
|
|
}
|
|
|
|
/**
|
|
* @brief Make an HTML document smaller by removing useless stuff.
|
|
* Can also change the text color to make it more readable.
|
|
* @param[in,out] text HTML document.
|
|
* @param flag Bitfield of RSHTML_FORMATTEXT_* constants (they must be part of
|
|
* RSHTML_OPTIMIZEHTML_MASK).
|
|
* @param backgroundColor Background color of the widget where the text will be
|
|
* displayed. Needed only if RSHTML_FORMATTEXT_FIX_COLORS
|
|
* is passed inside flag.
|
|
* @param desiredContrast Minimum contrast between text and background color,
|
|
* between 1 and 21.
|
|
* @param desiredMinimumFontSize Minimum font size.
|
|
*/
|
|
void RsHtml::optimizeHtml(QString &text, unsigned int flag /*= 0*/
|
|
, const QColor &backgroundColor /*= Qt::white*/
|
|
, qreal desiredContrast /*= 1.0*/
|
|
, int desiredMinimumFontSize /*=10*/
|
|
)
|
|
{
|
|
|
|
// remove doctype
|
|
text.remove(QRegExp("<!DOCTYPE[^>]*>"));
|
|
//remove all prepend char that make doc.setContent() fail
|
|
text.remove(0,text.indexOf("<"));
|
|
// Save Space and Tab because doc loose it.
|
|
text=saveSpace(text);
|
|
|
|
QString errorMsg; int errorLine; int errorColumn;
|
|
QDomDocument doc;
|
|
if (doc.setContent(text, &errorMsg, &errorLine, &errorColumn) == false) {
|
|
return;
|
|
}
|
|
|
|
QDomElement body = doc.documentElement();
|
|
|
|
QHash<QString, QStringList> stylesList;
|
|
QHash<QString, QString> knownStyle;
|
|
|
|
::optimizeHtml(doc, body, stylesList, knownStyle);
|
|
::styleCreate(doc, stylesList, flag, ::getRelativeLuminance(backgroundColor), desiredContrast, desiredMinimumFontSize);
|
|
text = doc.toString(-1);
|
|
|
|
// std::cerr << "Optimized text to " << text.length() << " bytes , instead of " << originalLength << std::endl;
|
|
}
|
|
|
|
QString RsHtml::toHtml(QString text, bool realHtml)
|
|
{
|
|
// replace "\n" from the optimized html with "<br>"
|
|
text.replace("\n", "<br>");
|
|
if (!realHtml) {
|
|
return text;
|
|
}
|
|
|
|
QTextDocument doc;
|
|
doc.setHtml(text);
|
|
return doc.toHtml();
|
|
}
|
|
|
|
/** Loads image and converts image to embedded image HTML fragment **/
|
|
bool RsHtml::makeEmbeddedImage(const QString &fileName, QString &embeddedImage, const int maxPixels, const int maxBytes)
|
|
{
|
|
QImage image;
|
|
|
|
if (image.load (fileName) == false) {
|
|
fprintf (stderr, "RsHtml::makeEmbeddedImage() - image \"%s\" can't be load\n", fileName.toLatin1().constData());
|
|
return false;
|
|
}
|
|
return RsHtml::makeEmbeddedImage(image, embeddedImage, maxPixels, maxBytes);
|
|
}
|
|
|
|
/** Converts image to embedded image HTML fragment **/
|
|
bool RsHtml::makeEmbeddedImage(const QImage &originalImage, QString &embeddedImage, const int maxPixels, const int maxBytes)
|
|
{
|
|
rstime::RsScopeTimer s("Embed image");
|
|
QImage opt;
|
|
return ImageUtil::optimizeSize(embeddedImage, originalImage, opt, maxPixels, maxBytes);
|
|
}
|
|
|
|
QString RsHtml::plainText(const QString &text)
|
|
{
|
|
#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
|
|
return text.toHtmlEscaped();
|
|
#else
|
|
return Qt::escape(text);
|
|
#endif
|
|
}
|
|
|
|
QString RsHtml::plainText(const std::string &text)
|
|
{
|
|
#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
|
|
return QString::fromUtf8(text.c_str()).toHtmlEscaped();
|
|
#else
|
|
return Qt::escape(QString::fromUtf8(text.c_str()));
|
|
#endif
|
|
}
|
|
|
|
QString RsHtml::makeQuotedText(RSTextBrowser *browser)
|
|
{
|
|
QString text = browser->textCursor().selection().toPlainText();
|
|
if(text.length() == 0)
|
|
{
|
|
text = browser->toPlainText();
|
|
}
|
|
QStringList sl = text.split(QRegExp("[\r\n]"),QString::SkipEmptyParts);
|
|
text = sl.join("\n> ");
|
|
text.replace(QChar(-4)," ");//Char used when image on text.
|
|
return QString("> ") + text;
|
|
}
|
|
|
|
void RsHtml::insertSpoilerText(QTextCursor cursor)
|
|
{
|
|
QString hiddentext = cursor.selection().toPlainText();
|
|
if(hiddentext.isEmpty()) return;
|
|
QString publictext = "*SPOILER*";
|
|
|
|
QString encoded = hiddentext;
|
|
encoded = encoded.replace(QChar('\"'), QString("""));
|
|
encoded = encoded.replace(QChar('\''), QString("'"));
|
|
encoded = encoded.replace(QChar('<'), QString("<"));
|
|
encoded = encoded.replace(QChar('>'), QString(">"));
|
|
encoded = encoded.replace(QChar('&'), QString("&"));
|
|
|
|
QString html = QString("<a href=\"hidden:%1\" title=\"%1\">%2</a>").arg(encoded, publictext);
|
|
cursor.insertHtml(html);
|
|
}
|
|
|
|
void RsHtml::findBestColor(QString &val, const QColor &backgroundColor /*= Qt::white*/, qreal desiredContrast /*= 1.0*/)
|
|
{
|
|
::findBestColor(val, ::getRelativeLuminance(backgroundColor), desiredContrast);
|
|
}
|
|
|