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qTox/smileypack.cpp

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/*
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Copyright (C) 2014 by Project Tox <https://tox.im>
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This file is part of qTox, a Qt-based graphical interface for Tox.
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This program is libre software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the COPYING file for more details.
*/
#include "smileypack.h"
#include "settings.h"
#include <QFileInfo>
#include <QFile>
#include <QtXml>
#include <QDebug>
SmileyPack::SmileyPack()
{
load(Settings::getInstance().getSmileyPack());
connect(&Settings::getInstance(), &Settings::smileyPackChanged, this, &SmileyPack::onSmileyPackChanged);
}
SmileyPack& SmileyPack::getInstance()
{
static SmileyPack smileyPack;
return smileyPack;
}
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QList<QPair<QString, QString> > SmileyPack::listSmileyPacks(const QString &path)
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{
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QList<QPair<QString, QString> > smileyPacks;
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QDir dir(path);
foreach (const QString& subdirectory, dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot))
{
dir.cd(subdirectory);
QFileInfoList entries = dir.entryInfoList(QStringList() << "emoticons.xml", QDir::Files);
if (entries.size() > 0) // does it contain a file called emoticons.xml?
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{
QString packageName = dir.dirName();
QString relPath = QDir(QCoreApplication::applicationDirPath()).relativeFilePath(entries[0].absoluteFilePath());
smileyPacks << QPair<QString, QString>(packageName, relPath);
}
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dir.cdUp();
}
return smileyPacks;
}
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bool SmileyPack::isValid(const QString &filename)
{
return QFile(filename).exists();
}
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bool SmileyPack::load(const QString& filename)
{
// discard old data
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filenameTable.clear();
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imgCache.clear();
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emoticons.clear();
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path.clear();
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// open emoticons.xml
QFile xmlFile(filename);
if(!xmlFile.open(QIODevice::ReadOnly))
return false; // cannot open file
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/* parse the cfg file
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* sample:
* <?xml version='1.0'?>
* <messaging-emoticon-map>
* <emoticon file="smile.png" >
* <string>:)</string>
* <string>:-)</string>
* </emoticon>
* <emoticon file="sad.png" >
* <string>:(</string>
* <string>:-(</string>
* </emoticon>
* </messaging-emoticon-map>
*/
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path = QFileInfo(filename).absolutePath();
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QDomDocument doc;
doc.setContent(xmlFile.readAll());
QDomNodeList emoticonElements = doc.elementsByTagName("emoticon");
for (int i = 0; i < emoticonElements.size(); ++i)
{
QString file = emoticonElements.at(i).attributes().namedItem("file").nodeValue();
QDomElement stringElement = emoticonElements.at(i).firstChildElement("string");
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QStringList emoticonSet; // { ":)", ":-)" } etc.
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while (!stringElement.isNull())
{
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QString emoticon = stringElement.text();
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filenameTable.insert(emoticon, file);
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emoticonSet.push_back(emoticon);
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cacheSmiley(file); // preload all smileys
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stringElement = stringElement.nextSibling().toElement();
}
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emoticons.push_back(emoticonSet);
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}
// success!
return true;
}
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QString SmileyPack::smileyfied(QString msg)
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{
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QRegExp exp("\\S+"); // matches words
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int index = msg.indexOf(exp);
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// if a word is key of a smiley, replace it by its corresponding image in Rich Text
while (index >= 0)
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{
QString key = exp.cap();
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if (filenameTable.contains(key))
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{
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QString imgRichText = getAsRichText(key);
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msg.replace(index, key.length(), imgRichText);
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index += imgRichText.length() - key.length();
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}
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index = msg.indexOf(exp, index + key.length());
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}
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return msg;
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}
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QList<QStringList> SmileyPack::getEmoticons() const
{
return emoticons;
}
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QString SmileyPack::getAsRichText(const QString &key)
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{
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return "<img src=\"data:image/png;base64," % QString(getCachedSmiley(key).toBase64()) % "\">";
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}
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QIcon SmileyPack::getAsIcon(const QString &key)
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{
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QPixmap pm;
pm.loadFromData(getCachedSmiley(key), "PNG");
return QIcon(pm);
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}
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void SmileyPack::cacheSmiley(const QString &name)
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{
QSize size(16, 16); // TODO: adapt to text size
QString filename = QDir(path).filePath(name);
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QImage img(filename);
if (!img.isNull())
{
QImage scaledImg = img.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
QByteArray scaledImgData;
QBuffer buffer(&scaledImgData);
scaledImg.save(&buffer, "PNG");
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imgCache.insert(name, scaledImgData);
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}
}
QByteArray SmileyPack::getCachedSmiley(const QString &key)
{
// valid key?
if (!filenameTable.contains(key))
return QByteArray();
// cache it if needed
QString file = filenameTable.value(key);
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if (!imgCache.contains(file)) {
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cacheSmiley(file);
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}
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return imgCache.value(file);
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}
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void SmileyPack::onSmileyPackChanged()
{
load(Settings::getInstance().getSmileyPack());
}