vnote/src/utils/vutils.cpp
2019-07-30 21:00:46 +08:00

1933 lines
58 KiB
C++

#include "vutils.h"
#include <QFile>
#include <QDir>
#include <QDebug>
#include <QRegExp>
#include <QClipboard>
#include <QApplication>
#include <QMimeData>
#include <QJsonObject>
#include <QJsonDocument>
#include <QDateTime>
#include <QFileInfo>
#include <QImageReader>
#include <QKeyEvent>
#include <QScreen>
#include <cmath>
#include <QLocale>
#include <QPushButton>
#include <QElapsedTimer>
#include <QValidator>
#include <QRegExpValidator>
#include <QRegExp>
#include <QKeySequence>
#include <QComboBox>
#include <QStyledItemDelegate>
#include <QAction>
#include <QTreeWidgetItem>
#include <QFormLayout>
#include <QInputDialog>
#include <QFontDatabase>
#include <QSvgRenderer>
#include <QPainter>
#include <QTemporaryFile>
#include <QWebView>
#include "vorphanfile.h"
#include "vnote.h"
#include "vnotebook.h"
#include "pegparser.h"
#include "vpreviewpage.h"
#include "widgets/vcombobox.h"
extern VConfigManager *g_config;
QVector<QPair<QString, QString>> VUtils::s_availableLanguages;
const QString VUtils::c_imageLinkRegExp = QString("\\!\\[([^\\[\\]]*)\\]"
"\\(\\s*"
"([^\\)\"'\\s]+)"
"(\\s*(\"[^\"\\)\\n\\r]*\")|('[^'\\)\\n\\r]*'))?"
"(\\s*=(\\d*)x(\\d*))?"
"\\s*\\)");
const QString VUtils::c_imageTitleRegExp = QString("[^\\[\\]]*");
const QString VUtils::c_linkRegExp = QString("\\[([^\\]]*)\\]"
"\\(\\s*(\\S+)"
"(?:\\s+((\"[^\"\\n\\r]*\")"
"|('[^'\\n\\r]*')))?\\s*"
"\\)");
const QString VUtils::c_fileNameRegExp = QString("(?:[^\\\\/:\\*\\?\"<>\\|\\s]| )*");
const QString VUtils::c_fencedCodeBlockStartRegExp = QString("^(\\s*)([`~])\\2{2}((?:(?!\\2)[^\\r\\n])*)$");
const QString VUtils::c_fencedCodeBlockEndRegExp = QString("^(\\s*)([`~])\\2{2}\\s*$");
const QString VUtils::c_previewImageBlockRegExp = QString("[\\n|^][ |\\t]*\\xfffc[ |\\t]*(?=\\n)");
const QString VUtils::c_headerRegExp = QString("^(#{1,6})\\s+(((\\d+\\.)+(?=\\s))?\\s*(\\S.*)?)$");
const QString VUtils::c_headerPrefixRegExp = QString("^(#{1,6}\\s+((\\d+\\.)+(?=\\s))?\\s*)($|(\\S.*)?$)");
const QString VUtils::c_listRegExp = QString("^\\s*(-|\\*|\\d+\\.)\\s");
const QString VUtils::c_blockQuoteRegExp = QString("^\\s*(\\>\\s?)");
void VUtils::initAvailableLanguage()
{
if (!s_availableLanguages.isEmpty()) {
return;
}
s_availableLanguages.append(QPair<QString, QString>("en_US", "English (US)"));
s_availableLanguages.append(QPair<QString, QString>("zh_CN", "Chinese"));
s_availableLanguages.append(QPair<QString, QString>("ja_JP", "Japanese"));
}
QString VUtils::readFileFromDisk(const QString &filePath)
{
QFile file(filePath);
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
qWarning() << "fail to open file" << filePath << "to read";
return QString();
}
QString fileText(file.readAll());
file.close();
qDebug() << "read file content:" << filePath;
return fileText;
}
bool VUtils::writeFileToDisk(const QString &p_filePath, const QString &p_text)
{
QFile file(p_filePath);
if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
qWarning() << "fail to open file" << p_filePath << "to write";
return false;
}
QTextStream stream(&file);
stream << p_text;
file.close();
qDebug() << "write file content:" << p_filePath;
return true;
}
bool VUtils::writeFileToDisk(const QString &p_filePath, const QByteArray &p_data)
{
QFile file(p_filePath);
if (!file.open(QIODevice::WriteOnly)) {
qWarning() << "fail to open file" << p_filePath << "to write";
return false;
}
file.write(p_data);
file.close();
qDebug() << "write file content:" << p_filePath;
return true;
}
bool VUtils::writeJsonToDisk(const QString &p_filePath, const QJsonObject &p_json)
{
QFile file(p_filePath);
// We use Unix LF for config file.
if (!file.open(QIODevice::WriteOnly)) {
qWarning() << "fail to open file" << p_filePath << "to write";
return false;
}
QJsonDocument doc(p_json);
if (-1 == file.write(doc.toJson())) {
return false;
}
return true;
}
QJsonObject VUtils::readJsonFromDisk(const QString &p_filePath)
{
QFile file(p_filePath);
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "fail to open file" << p_filePath << "to read";
return QJsonObject();
}
return QJsonDocument::fromJson(file.readAll()).object();
}
QString VUtils::generateImageFileName(const QString &path,
const QString &title,
const QString &format)
{
Q_UNUSED(title);
const QChar sep('_');
QString baseName(g_config->getImageNamePrefix());
if (!baseName.isEmpty()
&& !(baseName.size() == 1 && baseName[0] == sep)) {
baseName += sep;
}
// Add current time at fixed length.
baseName += QDateTime::currentDateTime().toString("yyyyMMddHHmmsszzz");
// Add random number to make the name be most likely unique.
baseName += (sep + QString::number(qrand()));
QString suffix;
if (!format.isEmpty()) {
suffix = "." + format.toLower();
}
QString imageName(baseName + suffix);
int index = 1;
QDir dir(path);
while (fileExists(dir, imageName, true)) {
imageName = QString("%1_%2%3").arg(baseName).arg(index++).arg(suffix);
}
return imageName;
}
QString VUtils::fileNameFromPath(const QString &p_path)
{
if (p_path.isEmpty()) {
return p_path;
}
return QFileInfo(QDir::cleanPath(p_path)).fileName();
}
QString VUtils::basePathFromPath(const QString &p_path)
{
if (p_path.isEmpty()) {
return p_path;
}
return QFileInfo(QDir::cleanPath(p_path)).path();
}
QVector<ImageLink> VUtils::fetchImagesFromMarkdownFile(VFile *p_file,
ImageLink::ImageLinkType p_type)
{
Q_ASSERT(p_file->getDocType() == DocType::Markdown);
QVector<ImageLink> images;
bool isOpened = p_file->isOpened();
if (!isOpened && !p_file->open()) {
return images;
}
const QString &text = p_file->getContent();
if (text.isEmpty()) {
if (!isOpened) {
p_file->close();
}
return images;
}
// Used to de-duplicate the links. Url as the key.
QSet<QString> fetchedLinks;
QVector<VElementRegion> regions = fetchImageRegionsUsingParser(text);
QRegExp regExp(c_imageLinkRegExp);
QString basePath = p_file->fetchBasePath();
for (int i = 0; i < regions.size(); ++i) {
const VElementRegion &reg = regions[i];
QString linkText = text.mid(reg.m_startPos, reg.m_endPos - reg.m_startPos);
bool matched = regExp.exactMatch(linkText);
if (!matched) {
// Image links with reference format will not match.
continue;
}
QString imageUrl = regExp.capturedTexts()[2].trimmed();
ImageLink link;
link.m_url = imageUrl;
QFileInfo info(basePath, purifyUrl(imageUrl));
if (info.exists()) {
if (info.isNativePath()) {
// Local file.
link.m_path = QDir::cleanPath(info.absoluteFilePath());
if (QDir::isRelativePath(imageUrl)) {
link.m_type = p_file->isInternalImageFolder(VUtils::basePathFromPath(link.m_path)) ?
ImageLink::LocalRelativeInternal : ImageLink::LocalRelativeExternal;
} else {
link.m_type = ImageLink::LocalAbsolute;
}
} else {
link.m_type = ImageLink::Resource;
link.m_path = imageUrl;
}
} else {
QUrl url(imageUrl);
link.m_path = url.toString();
link.m_type = ImageLink::Remote;
}
if (link.m_type & p_type) {
if (!fetchedLinks.contains(link.m_url)) {
fetchedLinks.insert(link.m_url);
images.push_back(link);
qDebug() << "fetch one image:" << link.m_type << link.m_path << link.m_url;
}
}
}
if (!isOpened) {
p_file->close();
}
return images;
}
QString VUtils::linkUrlToPath(const QString &p_basePath, const QString &p_url)
{
QString fullPath;
QFileInfo info(p_basePath, purifyUrl(p_url));
if (info.exists()) {
if (info.isNativePath()) {
// Local file.
fullPath = QDir::cleanPath(info.absoluteFilePath());
} else {
fullPath = p_url;
}
} else {
QString decodedUrl(p_url);
VUtils::decodeUrl(decodedUrl);
QFileInfo dinfo(p_basePath, decodedUrl);
if (dinfo.exists()) {
if (dinfo.isNativePath()) {
// Local file.
fullPath = QDir::cleanPath(dinfo.absoluteFilePath());
} else {
fullPath = p_url;
}
} else {
QUrl url(p_url);
if (url.isLocalFile()) {
fullPath = url.toLocalFile();
} else {
fullPath = url.toString();
}
}
}
return fullPath;
}
bool VUtils::makePath(const QString &p_path)
{
if (p_path.isEmpty()) {
return true;
}
bool ret = true;
QDir dir;
if (dir.mkpath(p_path)) {
qDebug() << "make path" << p_path;
} else {
qWarning() << "fail to make path" << p_path;
ret = false;
}
return ret;
}
QJsonObject VUtils::clipboardToJson()
{
QClipboard *clipboard = QApplication::clipboard();
const QMimeData *mimeData = clipboard->mimeData();
QJsonObject obj;
if (mimeData->hasText()) {
QString text = mimeData->text();
obj = QJsonDocument::fromJson(text.toUtf8()).object();
qDebug() << "Json object in clipboard" << obj;
}
return obj;
}
ClipboardOpType VUtils::operationInClipboard()
{
QJsonObject obj = clipboardToJson();
if (obj.contains(ClipboardConfig::c_type)) {
return (ClipboardOpType)obj[ClipboardConfig::c_type].toInt();
}
return ClipboardOpType::Invalid;
}
bool VUtils::copyFile(const QString &p_srcFilePath, const QString &p_destFilePath, bool p_isCut)
{
QString srcPath = QDir::cleanPath(p_srcFilePath);
QString destPath = QDir::cleanPath(p_destFilePath);
if (srcPath == destPath) {
return true;
}
QDir dir;
if (!dir.mkpath(basePathFromPath(p_destFilePath))) {
qWarning() << "fail to create directory" << basePathFromPath(p_destFilePath);
return false;
}
if (p_isCut) {
QFile file(srcPath);
if (!file.rename(destPath)) {
qWarning() << "fail to copy file" << srcPath << destPath;
return false;
}
} else {
if (!QFile::copy(srcPath, destPath)) {
qWarning() << "fail to copy file" << srcPath << destPath;
return false;
}
}
return true;
}
bool VUtils::copyDirectory(const QString &p_srcDirPath, const QString &p_destDirPath, bool p_isCut)
{
QString srcPath = QDir::cleanPath(p_srcDirPath);
QString destPath = QDir::cleanPath(p_destDirPath);
if (srcPath == destPath) {
return true;
}
if (QFileInfo::exists(destPath)) {
qWarning() << QString("target directory %1 already exists").arg(destPath);
return false;
}
// QDir.rename() could not move directory across drives.
// Make sure target directory exists.
QDir destDir(destPath);
if (!destDir.exists()) {
if (!destDir.mkpath(destPath)) {
qWarning() << QString("fail to create target directory %1").arg(destPath);
return false;
}
}
// Handle directory recursively.
QDir srcDir(srcPath);
Q_ASSERT(srcDir.exists() && destDir.exists());
QFileInfoList nodes = srcDir.entryInfoList(QDir::Dirs | QDir::Files | QDir::Hidden
| QDir::NoSymLinks | QDir::NoDotAndDotDot);
for (int i = 0; i < nodes.size(); ++i) {
const QFileInfo &fileInfo = nodes.at(i);
QString name = fileInfo.fileName();
if (fileInfo.isDir()) {
if (!copyDirectory(srcDir.filePath(name), destDir.filePath(name), p_isCut)) {
return false;
}
} else {
Q_ASSERT(fileInfo.isFile());
if (!copyFile(srcDir.filePath(name), destDir.filePath(name), p_isCut)) {
return false;
}
}
}
if (p_isCut) {
if (!destDir.rmdir(srcPath)) {
qWarning() << QString("fail to delete source directory %1 after cut").arg(srcPath);
return false;
}
}
return true;
}
int VUtils::showMessage(QMessageBox::Icon p_icon,
const QString &p_title,
const QString &p_text,
const QString &p_infoText,
QMessageBox::StandardButtons p_buttons,
QMessageBox::StandardButton p_defaultBtn,
QWidget *p_parent,
MessageBoxType p_type)
{
QMessageBox msgBox(p_icon, p_title, p_text, p_buttons, p_parent);
msgBox.setInformativeText(p_infoText);
msgBox.setDefaultButton(p_defaultBtn);
if (p_type == MessageBoxType::Danger) {
QPushButton *okBtn = dynamic_cast<QPushButton *>(msgBox.button(QMessageBox::Ok));
if (okBtn) {
setDynamicProperty(okBtn, "DangerBtn");
}
}
QPushButton *defaultBtn = dynamic_cast<QPushButton *>(msgBox.button(p_defaultBtn));
if (defaultBtn) {
setDynamicProperty(defaultBtn, "SpecialBtn");
}
return msgBox.exec();
}
void VUtils::promptForReopen(QWidget *p_parent)
{
VUtils::showMessage(QMessageBox::Information,
QObject::tr("Information"),
QObject::tr("Please re-open current opened tabs to make it work."),
"",
QMessageBox::Ok,
QMessageBox::Ok,
p_parent);
}
QString VUtils::generateCopiedFileName(const QString &p_dirPath,
const QString &p_fileName,
bool p_completeBaseName)
{
QDir dir(p_dirPath);
if (!dir.exists() || !dir.exists(p_fileName)) {
return p_fileName;
}
QFileInfo fi(p_fileName);
QString baseName = p_completeBaseName ? fi.completeBaseName() : fi.baseName();
QString suffix = p_completeBaseName ? fi.suffix() : fi.completeSuffix();
int index = 0;
QString fileName;
do {
QString seq;
if (index > 0) {
seq = QString("%1").arg(QString::number(index), 3, '0');
}
index++;
fileName = QString("%1_copy%2").arg(baseName).arg(seq);
if (!suffix.isEmpty()) {
fileName = fileName + "." + suffix;
}
} while (fileExists(dir, fileName, true));
return fileName;
}
QString VUtils::generateCopiedDirName(const QString &p_parentDirPath, const QString &p_dirName)
{
QDir dir(p_parentDirPath);
QString name = p_dirName;
QString dirPath = dir.filePath(name);
int index = 0;
while (QDir(dirPath).exists()) {
QString seq;
if (index > 0) {
seq = QString::number(index);
}
index++;
name = QString("%1_copy%2").arg(p_dirName).arg(seq);
dirPath = dir.filePath(name);
}
return name;
}
const QVector<QPair<QString, QString>>& VUtils::getAvailableLanguages()
{
if (s_availableLanguages.isEmpty()) {
initAvailableLanguage();
}
return s_availableLanguages;
}
bool VUtils::isValidLanguage(const QString &p_lang)
{
for (auto const &lang : getAvailableLanguages()) {
if (lang.first == p_lang) {
return true;
}
}
return false;
}
bool VUtils::isImageURL(const QUrl &p_url)
{
QString urlStr;
if (p_url.isLocalFile()) {
urlStr = p_url.toLocalFile();
} else {
urlStr = p_url.toString();
}
return isImageURLText(urlStr);
}
bool VUtils::isImageURLText(const QString &p_url)
{
QFileInfo info(purifyUrl(p_url));
return QImageReader::supportedImageFormats().contains(info.suffix().toLower().toLatin1());
}
qreal VUtils::calculateScaleFactor()
{
static qreal factor = -1;
if (factor < 0) {
const qreal refDpi = 96;
qreal dpi = QGuiApplication::primaryScreen()->logicalDotsPerInch();
factor = dpi / refDpi;
if (factor < 1) {
factor = 1;
} else {
// Keep only two digits after the dot.
factor = (int)(factor * 100) / 100.0;
}
}
return factor;
}
bool VUtils::realEqual(qreal p_a, qreal p_b)
{
return std::abs(p_a - p_b) < 1e-8;
}
QChar VUtils::keyToChar(int p_key, bool p_smallCase)
{
QString key = QKeySequence(p_key).toString();
if (key.size() == 1) {
return p_smallCase ? key[0].toLower() : key[0];
}
return QChar();
}
QString VUtils::getLocale()
{
QString locale = g_config->getLanguage();
if (locale == "System" || !isValidLanguage(locale)) {
locale = QLocale::system().name();
}
return locale;
}
void VUtils::sleepWait(int p_milliseconds)
{
if (p_milliseconds <= 0) {
return;
}
QElapsedTimer t;
t.start();
while (t.elapsed() < p_milliseconds) {
QCoreApplication::processEvents();
}
}
DocType VUtils::docTypeFromName(const QString &p_name)
{
if (p_name.isEmpty()) {
return DocType::Unknown;
}
const QHash<int, QList<QString>> &suffixes = g_config->getDocSuffixes();
QString suf = QFileInfo(p_name).suffix().toLower();
for (auto it = suffixes.begin(); it != suffixes.end(); ++it) {
if (it.value().contains(suf)) {
return DocType(it.key());
}
}
return DocType::Unknown;
}
QString VUtils::generateSimpleHtmlTemplate(const QString &p_body)
{
QString html(VNote::s_simpleHtmlTemplate);
return html.replace(HtmlHolder::c_bodyHolder, p_body);
}
QString VUtils::generateHtmlTemplate(MarkdownConverterType p_conType, quint16 p_port)
{
return generateHtmlTemplate(VNote::s_markdownTemplate, p_conType, p_port);
}
QString VUtils::generateHtmlTemplate(MarkdownConverterType p_conType,
const QString &p_renderBg,
const QString &p_renderStyle,
const QString &p_renderCodeBlockStyle,
quint16 p_port,
bool p_isPDF,
bool p_wkhtmltopdf,
bool p_addToc)
{
Q_ASSERT((p_isPDF && p_wkhtmltopdf) || !p_wkhtmltopdf);
QString templ = VNote::generateHtmlTemplate(g_config->getRenderBackgroundColor(p_renderBg),
g_config->getCssStyleUrl(p_renderStyle),
g_config->getCodeBlockCssStyleUrl(p_renderCodeBlockStyle),
p_isPDF);
return generateHtmlTemplate(templ, p_conType, p_port, p_isPDF, p_wkhtmltopdf, p_addToc);
}
QString VUtils::generateHtmlTemplate(const QString &p_template,
MarkdownConverterType p_conType,
quint16 p_port,
bool p_isPDF,
bool p_wkhtmltopdf,
bool p_addToc)
{
bool mathjaxTypeSetOnLoad = true;
QString jsFile, extraFile;
switch (p_conType) {
case MarkdownConverterType::Marked:
jsFile = "qrc" + VNote::c_markedJsFile;
extraFile = "<script src=\"qrc" + VNote::c_markedExtraFile + "\"></script>\n";
break;
case MarkdownConverterType::Hoedown:
jsFile = "qrc" + VNote::c_hoedownJsFile;
// Use Marked to highlight code blocks.
extraFile = "<script src=\"qrc" + VNote::c_markedExtraFile + "\"></script>\n";
break;
case MarkdownConverterType::MarkdownIt:
{
jsFile = "qrc" + VNote::c_markdownitJsFile;
extraFile = "<script src=\"qrc" + VNote::c_markdownitExtraFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_markdownitAnchorExtraFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_markdownitTaskListExtraFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_markdownitImsizeExtraFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_markdownitFootnoteExtraFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_markdownitContainerExtraFile + "\"></script>\n";
if (g_config->getEnableMathjax()) {
extraFile += "<script src=\"qrc" + VNote::c_markdownitTexMathExtraFile + "\"></script>\n";
}
const MarkdownitOption &opt = g_config->getMarkdownitOption();
if (opt.m_sup) {
extraFile += "<script src=\"qrc" + VNote::c_markdownitSupExtraFile + "\"></script>\n";
}
if (opt.m_sub) {
extraFile += "<script src=\"qrc" + VNote::c_markdownitSubExtraFile + "\"></script>\n";
}
if (opt.m_metadata) {
extraFile += "<script src=\"qrc" + VNote::c_markdownitFrontMatterExtraFile + "\"></script>\n";
}
if (opt.m_emoji) {
extraFile += "<script src=\"qrc" + VNote::c_markdownitEmojiExtraFile + "\"></script>\n";
}
QString optJs = QString("<script>var VMarkdownitOption = {"
"html: %1,\n"
"breaks: %2,\n"
"linkify: %3,\n"
"sub: %4,\n"
"sup: %5,\n"
"metadata: %6,\n"
"emoji: %7 };\n"
"</script>\n")
.arg(opt.m_html ? QStringLiteral("true") : QStringLiteral("false"))
.arg(opt.m_breaks ? QStringLiteral("true") : QStringLiteral("false"))
.arg(opt.m_linkify ? QStringLiteral("true") : QStringLiteral("false"))
.arg(opt.m_sub ? QStringLiteral("true") : QStringLiteral("false"))
.arg(opt.m_sup ? QStringLiteral("true") : QStringLiteral("false"))
.arg(opt.m_metadata ? QStringLiteral("true") : QStringLiteral("false"))
.arg(opt.m_emoji ? QStringLiteral("true") : QStringLiteral("false"));
extraFile += optJs;
mathjaxTypeSetOnLoad = false;
break;
}
case MarkdownConverterType::Showdown:
jsFile = "qrc" + VNote::c_showdownJsFile;
extraFile = "<script src=\"qrc" + VNote::c_showdownExtraFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_showdownAnchorExtraFile + "\"></script>\n";
break;
default:
Q_ASSERT(false);
}
extraFile += "<script src=\"qrc" + VNote::c_turndownJsFile + "\"></script>\n";
extraFile += "<script src=\"qrc" + VNote::c_turndownGfmExtraFile + "\"></script>\n";
if (g_config->getEnableMermaid()) {
extraFile += "<link rel=\"stylesheet\" type=\"text/css\" href=\"" + g_config->getMermaidCssStyleUrl() + "\"/>\n" +
"<script src=\"qrc" + VNote::c_mermaidApiJsFile + "\"></script>\n" +
"<script>var VEnableMermaid = true;</script>\n";
}
if (g_config->getEnableFlowchart()) {
extraFile += "<script src=\"qrc" + VNote::c_raphaelJsFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_flowchartJsFile + "\"></script>\n" +
"<script>var VEnableFlowchart = true;</script>\n";
}
if (g_config->getEnableMathjax()) {
QString mj = g_config->getMathjaxJavascript();
if (p_wkhtmltopdf) {
// Chante MathJax to be rendered as SVG.
// If rendered as HTML, it will make the font of <code> messy.
QRegExp reg("(Mathjax\\.js\\?config=)\\S+", Qt::CaseInsensitive);
mj.replace(reg, QString("\\1%1").arg("TeX-MML-AM_SVG"));
}
extraFile += "<script type=\"text/x-mathjax-config\">"
"MathJax.Hub.Config({\n"
" tex2jax: {inlineMath: [['$','$'], ['\\\\(','\\\\)']],\n"
"processEscapes: true,\n"
"processClass: \"tex2jax_process|language-mathjax|lang-mathjax\"},\n"
" showProcessingMessages: false,\n"
" skipStartupTypeset: " + QString("%1,\n").arg(mathjaxTypeSetOnLoad ? "false" : "true") +
" TeX: {\n"
" Macros: {\n"
" bm: [\"\\\\boldsymbol{#1}\", 1]\n"
" },\n"
" equationNumbers: {\n"
" autoNumber: \"AMS\"\n"
" }\n"
" },\n"
" messageStyle: \"none\"});\n"
"MathJax.Hub.Register.StartupHook(\"End\", function() { handleMathjaxReady(); });\n"
"</script>\n"
"<script type=\"text/javascript\" async src=\"" + mj + "\"></script>\n" +
"<script>var VEnableMathjax = true;</script>\n";
if (p_wkhtmltopdf) {
extraFile += "<script>var VRemoveMathjaxScript = true;</script>\n";
}
}
if (g_config->getEnableWavedrom()) {
extraFile += "<script src=\"qrc" + VNote::c_wavedromThemeFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_wavedromJsFile + "\"></script>\n" +
"<script>var VEnableWavedrom = true;</script>\n";
}
int plantUMLMode = g_config->getPlantUMLMode();
if (plantUMLMode != PlantUMLMode::DisablePlantUML) {
if (plantUMLMode == PlantUMLMode::OnlinePlantUML) {
extraFile += "<script type=\"text/javascript\" src=\"" + VNote::c_plantUMLJsFile + "\"></script>\n" +
"<script type=\"text/javascript\" src=\"" + VNote::c_plantUMLZopfliJsFile + "\"></script>\n" +
"<script>var VPlantUMLServer = '" + g_config->getPlantUMLServer() + "';</script>\n";
}
extraFile += QString("<script>var VPlantUMLMode = %1;</script>\n").arg(plantUMLMode);
QString format = p_isPDF ? "png" : "svg";
extraFile += QString("<script>var VPlantUMLFormat = '%1';</script>\n").arg(format);
}
if (g_config->getEnableGraphviz()) {
extraFile += "<script>var VEnableGraphviz = true;</script>\n";
// If we use png, we need to specify proper font in the dot command to render
// non-ASCII chars properly.
// Hence we use svg format in both cases.
QString format = p_isPDF ? "svg" : "svg";
extraFile += QString("<script>var VGraphvizFormat = '%1';</script>\n").arg(format);
}
if (g_config->getEnableImageCaption()) {
extraFile += "<script>var VEnableImageCaption = true;</script>\n";
}
if (g_config->getEnableCodeBlockLineNumber()) {
extraFile += "<script src=\"qrc" + VNote::c_highlightjsLineNumberExtraFile + "\"></script>\n" +
"<script>var VEnableHighlightLineNumber = true;</script>\n";
}
if (g_config->getEnableFlashAnchor()) {
extraFile += "<script>var VEnableFlashAnchor = true;</script>\n";
}
if (g_config->getEnableCodeBlockCopyButton()) {
extraFile += "<script>var VEnableCodeBlockCopyButton = true;</script>\n";
}
if (p_addToc) {
extraFile += "<script>var VAddTOC = true;</script>\n";
extraFile += "<style type=\"text/css\">\n"
" @media print {\n"
" .vnote-toc {\n"
" page-break-after: always;\n"
" }\n"
" }\n"
"</style>";
}
extraFile += "<script>var VStylesToInline = '" + g_config->getStylesToInlineWhenCopied() + "';</script>\n";
#if defined(Q_OS_MACOS) || defined(Q_OS_MAC)
extraFile += "<script>var VOS = 'mac';</script>\n";
#elif defined(Q_OS_WIN)
extraFile += "<script>var VOS = 'win';</script>\n";
#else
extraFile += "<script>var VOS = 'linux';</script>\n";
#endif
extraFile += "<script>var VWebChannelPort = '" + QString::number(p_port) + "';</script>\n";
QString htmlTemplate(p_template);
htmlTemplate.replace(HtmlHolder::c_JSHolder, jsFile);
if (!extraFile.isEmpty()) {
htmlTemplate.replace(HtmlHolder::c_extraHolder, extraFile);
}
return htmlTemplate;
}
QString VUtils::generateExportHtmlTemplate(const QString &p_renderBg,
bool p_includeMathJax,
bool p_outlinePanel)
{
QString templ = VNote::generateExportHtmlTemplate(g_config->getRenderBackgroundColor(p_renderBg));
QString extra;
if (p_includeMathJax) {
extra += "<script type=\"text/x-mathjax-config\">\n"
"MathJax.Hub.Config({\n"
" showProcessingMessages: false,\n"
" messageStyle: \"none\",\n"
" SVG: {\n"
" minScaleAdjust: 100,\n"
" styles: {\n"
/*
FIXME: Using wkhtmltopdf, without 2em, the math formula will be very small. However,
with 2em, if there are Chinese characters in it, the font will be a mess.
*/
#if defined(Q_OS_WIN)
" \".MathJax_SVG\": {\n"
" \"font-size\": \"2em !important\"\n"
" }\n"
#endif
" }\n"
" },\n"
" TeX: {\n"
" Macros: {\n"
" bm: [\"\\\\boldsymbol{#1}\", 1]\n"
" },\n"
" equationNumbers: {\n"
" autoNumber: \"AMS\"\n"
" }\n"
" }\n"
"});\n"
"</script>\n";
QString mj = g_config->getMathjaxJavascript();
// Chante MathJax to be rendered as SVG.
QRegExp reg("(Mathjax\\.js\\?config=)\\S+", Qt::CaseInsensitive);
mj.replace(reg, QString("\\1%1").arg("TeX-MML-AM_SVG"));
extra += "<script type=\"text/javascript\" async src=\"" + mj + "\"></script>\n";
}
if (p_outlinePanel) {
const QString outlineCss(":/resources/export/outline.css");
QString css = VUtils::readFileFromDisk(outlineCss);
if (!css.isEmpty()) {
templ.replace(HtmlHolder::c_outlineStyleHolder, css);
}
const QString outlineJs(":/resources/export/outline.js");
QString js = VUtils::readFileFromDisk(outlineJs);
extra += QString("<script type=\"text/javascript\">\n%1\n</script>\n").arg(js);
}
// Clipboard.js.
if (g_config->getEnableCodeBlockCopyButton()) {
const QString clipboardjs(":/utils/clipboard.js/clipboard.min.js");
QString js = VUtils::readFileFromDisk(clipboardjs);
extra += QString("<script type=\"text/javascript\">\n%1\n</script>\n").arg(js);
extra += "<script type=\"text/javascript\">"
"window.addEventListener('load', function() {"
"new ClipboardJS('.vnote-copy-clipboard-btn', {"
"text: function(trigger) {"
"var t = trigger.getAttribute('source-text');"
"if (t[t.length - 1] == '\\n') {"
"return t.substring(0, t.length - 1);"
"} else {"
"return t;"
"}"
"}"
"});"
"});"
"</script>\n";
}
if (!extra.isEmpty()) {
templ.replace(HtmlHolder::c_extraHolder, extra);
}
return templ;
}
QString VUtils::generateMathJaxPreviewTemplate(quint16 p_port)
{
QString mj = g_config->getMathjaxJavascript();
QString templ = VNote::generateMathJaxPreviewTemplate();
templ.replace(HtmlHolder::c_JSHolder, mj);
QString extraFile;
QString mathjaxScale = QString::number((int)(100 * VUtils::calculateScaleFactor()));
/*
// Mermaid.
extraFile += "<link rel=\"stylesheet\" type=\"text/css\" href=\"" + g_config->getMermaidCssStyleUrl() + "\"/>\n" +
"<script src=\"qrc" + VNote::c_mermaidApiJsFile + "\"></script>\n";
*/
// Flowchart.
extraFile += "<script src=\"qrc" + VNote::c_raphaelJsFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_flowchartJsFile + "\"></script>\n";
// MathJax.
extraFile += "<script type=\"text/x-mathjax-config\">"
"MathJax.Hub.Config({\n"
" tex2jax: {inlineMath: [['$','$'], ['\\\\(','\\\\)']],\n"
"processEscapes: true,\n"
"processClass: \"tex2jax_process|language-mathjax|lang-mathjax\"},\n"
" \"HTML-CSS\": {\n"
" scale: " + mathjaxScale + "\n"
" },\n"
" showProcessingMessages: false,\n"
" TeX: {\n"
" Macros: {\n"
" bm: [\"\\\\boldsymbol{#1}\", 1]\n"
" },\n"
" equationNumbers: {\n"
" autoNumber: \"AMS\"\n"
" }\n"
" },\n"
" messageStyle: \"none\"});\n"
"</script>\n";
extraFile += "<script src=\"qrc" + VNote::c_wavedromThemeFile + "\"></script>\n" +
"<script src=\"qrc" + VNote::c_wavedromJsFile + "\"></script>\n";
// PlantUML.
extraFile += "<script type=\"text/javascript\" src=\"" + VNote::c_plantUMLJsFile + "\"></script>\n" +
"<script type=\"text/javascript\" src=\"" + VNote::c_plantUMLZopfliJsFile + "\"></script>\n" +
"<script>var VPlantUMLServer = '" + g_config->getPlantUMLServer() + "';</script>\n";
extraFile += "<script>var VWebChannelPort = '" + QString::number(p_port) + "';</script>\n";
templ.replace(HtmlHolder::c_extraHolder, extraFile);
return templ;
}
QString VUtils::getFileNameWithSequence(const QString &p_directory,
const QString &p_baseFileName,
bool p_completeBaseName)
{
QDir dir(p_directory);
if (!dir.exists() || !dir.exists(p_baseFileName)) {
return p_baseFileName;
}
// Append a sequence.
QFileInfo fi(p_baseFileName);
QString baseName = p_completeBaseName ? fi.completeBaseName() : fi.baseName();
QString suffix = p_completeBaseName ? fi.suffix() : fi.completeSuffix();
int seq = 1;
QString fileName;
do {
fileName = QString("%1_%2").arg(baseName).arg(QString::number(seq++), 3, '0');
if (!suffix.isEmpty()) {
fileName = fileName + "." + suffix;
}
} while (fileExists(dir, fileName, true));
return fileName;
}
QString VUtils::getDirNameWithSequence(const QString &p_directory,
const QString &p_baseDirName)
{
QDir dir(p_directory);
if (!dir.exists() || !dir.exists(p_baseDirName)) {
return p_baseDirName;
}
// Append a sequence.
int seq = 1;
QString fileName;
do {
fileName = QString("%1_%2").arg(p_baseDirName).arg(QString::number(seq++), 3, '0');
} while (fileExists(dir, fileName, true));
return fileName;
}
QString VUtils::getRandomFileName(const QString &p_directory)
{
Q_ASSERT(!p_directory.isEmpty());
QString baseName(QDateTime::currentDateTime().toString("yyyyMMddHHmmsszzz"));
QDir dir(p_directory);
QString name;
do {
name = baseName + '_' + QString::number(qrand());
} while (fileExists(dir, name, true));
return name;
}
bool VUtils::checkPathLegal(const QString &p_path)
{
// Ensure every part of the p_path is a valid file name until we come to
// an existing parent directory.
if (p_path.isEmpty()) {
return false;
}
if (QFileInfo::exists(p_path)) {
#if defined(Q_OS_WIN)
// On Windows, "/" and ":" will also make exists() return true.
if (p_path.startsWith('/') || p_path == ":") {
return false;
}
#endif
return true;
}
bool ret = false;
int pos;
QString basePath = basePathFromPath(p_path);
QString fileName = fileNameFromPath(p_path);
QValidator *validator = new QRegExpValidator(QRegExp(c_fileNameRegExp));
while (!fileName.isEmpty()) {
QValidator::State validFile = validator->validate(fileName, pos);
if (validFile != QValidator::Acceptable) {
break;
}
if (QFileInfo::exists(basePath)) {
ret = true;
#if defined(Q_OS_WIN)
// On Windows, "/" and ":" will also make exists() return true.
if (basePath.startsWith('/') || basePath == ":") {
ret = false;
}
#endif
break;
}
fileName = fileNameFromPath(basePath);
basePath = basePathFromPath(basePath);
}
delete validator;
return ret;
}
bool VUtils::checkFileNameLegal(const QString &p_name)
{
if (p_name.isEmpty()) {
return false;
}
QRegExp exp(c_fileNameRegExp);
return exp.exactMatch(p_name);
}
bool VUtils::equalPath(const QString &p_patha, const QString &p_pathb)
{
QString a = QDir::cleanPath(p_patha);
QString b = QDir::cleanPath(p_pathb);
#if defined(Q_OS_WIN)
a = a.toLower();
b = b.toLower();
#endif
return a == b;
}
bool VUtils::splitPathInBasePath(const QString &p_base,
const QString &p_path,
QStringList &p_parts)
{
p_parts.clear();
QString a = QDir::cleanPath(p_base);
QString b = QDir::cleanPath(p_path);
#if defined(Q_OS_WIN)
if (!b.toLower().startsWith(a.toLower())) {
return false;
}
#else
if (!b.startsWith(a)) {
return false;
}
#endif
if (a.size() == b.size()) {
return true;
}
Q_ASSERT(a.size() < b.size());
if (b.at(a.size()) != '/') {
return false;
}
p_parts = b.right(b.size() - a.size() - 1).split("/", QString::SkipEmptyParts);
return true;
}
void VUtils::decodeUrl(QString &p_url)
{
QHash<QString, QString> maps;
maps.insert("%20", " ");
for (auto it = maps.begin(); it != maps.end(); ++it) {
p_url.replace(it.key(), it.value());
}
}
QString VUtils::getShortcutText(const QString &p_keySeq)
{
return QKeySequence(p_keySeq).toString(QKeySequence::NativeText);
}
bool VUtils::deleteDirectory(const VNotebook *p_notebook,
const QString &p_path,
bool p_skipRecycleBin)
{
if (p_skipRecycleBin) {
QDir dir(p_path);
return dir.removeRecursively();
} else {
// Move it to the recycle bin folder.
return deleteFile(p_notebook->getRecycleBinFolderPath(), p_path);
}
}
bool VUtils::deleteDirectory(const QString &p_path)
{
if (p_path.isEmpty()) {
return true;
}
QDir dir(p_path);
return dir.removeRecursively();
}
bool VUtils::emptyDirectory(const VNotebook *p_notebook,
const QString &p_path,
bool p_skipRecycleBin)
{
QDir dir(p_path);
if (!dir.exists()) {
return true;
}
QFileInfoList nodes = dir.entryInfoList(QDir::Dirs | QDir::Files | QDir::Hidden
| QDir::NoSymLinks | QDir::NoDotAndDotDot);
for (int i = 0; i < nodes.size(); ++i) {
const QFileInfo &fileInfo = nodes.at(i);
if (fileInfo.isDir()) {
if (!deleteDirectory(p_notebook, fileInfo.absoluteFilePath(), p_skipRecycleBin)) {
return false;
}
} else {
Q_ASSERT(fileInfo.isFile());
if (!deleteFile(p_notebook, fileInfo.absoluteFilePath(), p_skipRecycleBin)) {
return false;
}
}
}
return true;
}
bool VUtils::deleteFile(const VNotebook *p_notebook,
const QString &p_path,
bool p_skipRecycleBin)
{
if (p_skipRecycleBin) {
QFile file(p_path);
return file.remove();
} else {
// Move it to the recycle bin folder.
return deleteFile(p_notebook->getRecycleBinFolderPath(), p_path);
}
}
bool VUtils::deleteFile(const QString &p_path)
{
QFile file(p_path);
bool ret = file.remove();
if (ret) {
qDebug() << "deleted file" << p_path;
} else {
qWarning() << "fail to delete file" << p_path;
}
return ret;
}
bool VUtils::deleteFile(const VOrphanFile *p_file,
const QString &p_path,
bool p_skipRecycleBin)
{
if (p_skipRecycleBin) {
QFile file(p_path);
return file.remove();
} else {
// Move it to the recycle bin folder.
return deleteFile(p_file->fetchRecycleBinFolderPath(), p_path);
}
}
static QString getRecycleBinSubFolderToUse(const QString &p_folderPath)
{
QDir dir(p_folderPath);
return QDir::cleanPath(dir.absoluteFilePath(QDateTime::currentDateTime().toString("yyyyMMdd")));
}
bool VUtils::deleteFile(const QString &p_recycleBinFolderPath,
const QString &p_path)
{
QString binPath = getRecycleBinSubFolderToUse(p_recycleBinFolderPath);
QDir binDir(binPath);
if (!binDir.exists()) {
binDir.mkpath(binPath);
if (!binDir.exists()) {
return false;
}
}
QString destName = getFileNameWithSequence(binPath,
fileNameFromPath(p_path),
true);
qDebug() << "try to move" << p_path << "to" << binPath << "as" << destName;
if (!binDir.rename(p_path, binDir.filePath(destName))) {
qWarning() << "fail to move" << p_path << "to" << binDir.filePath(destName);
return false;
}
return true;
}
QVector<VElementRegion> VUtils::fetchImageRegionsUsingParser(const QString &p_content)
{
Q_ASSERT(!p_content.isEmpty());
const QSharedPointer<PegParseConfig> parserConfig(new PegParseConfig());
parserConfig->m_data = p_content.toUtf8();
return PegParser::parseImageRegions(parserConfig);
}
QString VUtils::displayDateTime(const QDateTime &p_dateTime,
bool p_uniformNum)
{
QString res = p_dateTime.date().toString(p_uniformNum ? Qt::ISODate
: Qt::DefaultLocaleLongDate);
res += " " + p_dateTime.time().toString(p_uniformNum ? Qt::ISODate
: Qt::TextDate);
return res;
}
bool VUtils::fileExists(const QDir &p_dir, const QString &p_name, bool p_forceCaseInsensitive)
{
if (!p_forceCaseInsensitive) {
return p_dir.exists(p_name);
}
QString name = p_name.toLower();
QStringList names = p_dir.entryList(QDir::Dirs | QDir::Files | QDir::Hidden
| QDir::NoSymLinks | QDir::NoDotAndDotDot);
foreach (const QString &str, names) {
if (str.toLower() == name) {
return true;
}
}
return false;
}
void VUtils::addErrMsg(QString *p_msg, const QString &p_str)
{
if (!p_msg) {
return;
}
if (p_msg->isEmpty()) {
*p_msg = p_str;
} else {
*p_msg = *p_msg + '\n' + p_str;
}
}
QStringList VUtils::filterFilePathsToOpen(const QStringList &p_files)
{
QStringList paths;
for (int i = 0; i < p_files.size(); ++i) {
if (p_files[i].startsWith('-')) {
continue;
}
QString path = validFilePathToOpen(p_files[i]);
if (!path.isEmpty()) {
paths.append(path);
}
}
return paths;
}
QString VUtils::validFilePathToOpen(const QString &p_file)
{
if (QFileInfo::exists(p_file)) {
QFileInfo fi(p_file);
if (fi.isFile()) {
// Need to use absolute path here since VNote may be launched
// in different working directory.
return QDir::cleanPath(fi.absoluteFilePath());
}
}
return QString();
}
bool VUtils::isControlModifierForVim(int p_modifiers)
{
#if defined(Q_OS_MACOS) || defined(Q_OS_MAC)
return p_modifiers == Qt::MetaModifier;
#else
return p_modifiers == Qt::ControlModifier;
#endif
}
void VUtils::touchFile(const QString &p_file)
{
if (p_file.isEmpty()) {
return;
}
QFile file(p_file);
if (!file.open(QIODevice::WriteOnly)) {
qWarning() << "fail to touch file" << p_file;
return;
}
file.close();
}
bool VUtils::isMetaKey(int p_key)
{
return p_key == Qt::Key_Control
|| p_key == Qt::Key_Shift
|| p_key == Qt::Key_Meta
#if defined(Q_OS_LINUX)
// For mapping Caps as Ctrl in KDE.
|| p_key == Qt::Key_CapsLock
#endif
|| p_key == Qt::Key_Alt;
}
QComboBox *VUtils::getComboBox(QWidget *p_parent)
{
QComboBox *box = new VComboBox(p_parent);
QStyledItemDelegate *itemDelegate = new QStyledItemDelegate(box);
box->setItemDelegate(itemDelegate);
return box;
}
void VUtils::setDynamicProperty(QWidget *p_widget, const char *p_prop, bool p_val)
{
p_widget->setProperty(p_prop, p_val);
p_widget->style()->unpolish(p_widget);
p_widget->style()->polish(p_widget);
}
QWebView *VUtils::getWebView(const QColor &p_background, QWidget *p_parent)
{
auto viewer = new QWebView(p_parent);
VPreviewPage *page = new VPreviewPage(viewer);
// Setting the background to Qt::transparent will force GrayScale antialiasing.
if (p_background.isValid() && p_background != Qt::transparent) {
page->setBackgroundColor(p_background);
}
viewer->setPage(page);
viewer->setZoomFactor(g_config->getWebZoomFactor());
return viewer;
}
QString VUtils::getFileNameWithLocale(const QString &p_name, const QString &p_locale)
{
QString locale = p_locale.isEmpty() ? getLocale() : p_locale;
locale = locale.split('_')[0];
QFileInfo fi(p_name);
QString baseName = fi.completeBaseName();
QString suffix = fi.suffix();
if (suffix.isEmpty()) {
return QString("%1_%2").arg(baseName).arg(locale);
} else {
return QString("%1_%2.%3").arg(baseName).arg(locale).arg(suffix);
}
}
QString VUtils::getDocFile(const QString &p_name)
{
QDir dir(VNote::c_docFileFolder);
QString name(getFileNameWithLocale(p_name));
if (!dir.exists(name)) {
name = getFileNameWithLocale(p_name, "en_US");
}
return dir.filePath(name);
}
QString VUtils::getCaptainShortcutSequenceText(const QString &p_operation)
{
QString capKey = g_config->getShortcutKeySequence("CaptainMode");
QString sec = g_config->getCaptainShortcutKeySequence(p_operation);
QKeySequence seq(capKey + "," + sec);
if (!seq.isEmpty()) {
return seq.toString(QKeySequence::NativeText);
}
return QString();
}
QString VUtils::getAvailableFontFamily(const QStringList &p_families)
{
QStringList availFamilies = QFontDatabase().families();
for (int i = 0; i < p_families.size(); ++i) {
QString family = p_families[i].trimmed();
if (family.isEmpty()) {
continue;
}
for (int j = 0; j < availFamilies.size(); ++j) {
QString availFamily = availFamilies[j];
availFamily.remove(QRegExp("\\[.*\\]"));
availFamily = availFamily.trimmed();
if (family == availFamily
|| family.toLower() == availFamily.toLower()) {
qDebug() << "matched font family" << availFamilies[j];
return availFamilies[j];
}
}
}
return QString();
}
bool VUtils::fixTextWithShortcut(QAction *p_act, const QString &p_shortcut)
{
QString keySeq = g_config->getShortcutKeySequence(p_shortcut);
if (!keySeq.isEmpty()) {
p_act->setText(QString("%1\t%2").arg(p_act->text()).arg(VUtils::getShortcutText(keySeq)));
return true;
}
return false;
}
bool VUtils::fixTextWithCaptainShortcut(QAction *p_act, const QString &p_shortcut)
{
QString keyText = VUtils::getCaptainShortcutSequenceText(p_shortcut);
if (!keyText.isEmpty()) {
p_act->setText(QString("%1\t%2").arg(p_act->text()).arg(keyText));
return true;
}
return false;
}
QStringList VUtils::parseCombinedArgString(const QString &p_program)
{
QStringList args;
QString tmp;
int quoteCount = 0;
bool inQuote = false;
// handle quoting. tokens can be surrounded by double quotes
// "hello world". three consecutive double quotes represent
// the quote character itself.
for (int i = 0; i < p_program.size(); ++i) {
if (p_program.at(i) == QLatin1Char('"')) {
++quoteCount;
if (quoteCount == 3) {
// third consecutive quote
quoteCount = 0;
tmp += p_program.at(i);
}
continue;
}
if (quoteCount) {
if (quoteCount == 1) {
inQuote = !inQuote;
}
quoteCount = 0;
}
if (!inQuote && p_program.at(i).isSpace()) {
if (!tmp.isEmpty()) {
args += tmp;
tmp.clear();
}
} else {
tmp += p_program.at(i);
}
}
if (!tmp.isEmpty()) {
args += tmp;
}
return args;
}
QImage VUtils::imageFromFile(const QString &p_filePath)
{
QImage img(p_filePath);
if (!img.isNull()) {
return img;
}
// @p_filePath may has a wrong suffix which indicates a wrong image format.
QFile file(p_filePath);
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "fail to open image file" << p_filePath;
return img;
}
img.loadFromData(file.readAll());
qDebug() << "imageFromFile" << p_filePath << img.isNull() << img.format();
return img;
}
QPixmap VUtils::pixmapFromFile(const QString &p_filePath)
{
QPixmap pixmap;
QFile file(p_filePath);
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "fail to open pixmap file" << p_filePath;
return pixmap;
}
pixmap.loadFromData(file.readAll());
qDebug() << "pixmapFromFile" << p_filePath << pixmap.isNull();
return pixmap;
}
QFormLayout *VUtils::getFormLayout()
{
QFormLayout *layout = new QFormLayout();
#if defined(Q_OS_MACOS) || defined(Q_OS_MAC)
layout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
layout->setFormAlignment(Qt::AlignLeft | Qt::AlignTop);
#endif
return layout;
}
bool VUtils::inSameDrive(const QString &p_a, const QString &p_b)
{
#if defined(Q_OS_WIN)
QChar sep(':');
int ai = p_a.indexOf(sep);
int bi = p_b.indexOf(sep);
if (ai == -1 || bi == -1) {
return false;
}
return p_a.left(ai).toLower() == p_b.left(bi).toLower();
#else
return true;
#endif
}
QString VUtils::promptForFileName(const QString &p_title,
const QString &p_label,
const QString &p_default,
const QString &p_dir,
QWidget *p_parent)
{
QString name = p_default;
QString text = p_label;
QDir paDir(p_dir);
while (true) {
bool ok;
name = QInputDialog::getText(p_parent,
p_title,
text,
QLineEdit::Normal,
name,
&ok);
if (!ok || name.isEmpty()) {
return "";
}
if (!VUtils::checkFileNameLegal(name)) {
text = QObject::tr("Illegal name. Please try again:");
continue;
}
if (paDir.exists(name)) {
text = QObject::tr("Name already exists. Please try again:");
continue;
}
break;
}
return name;
}
QString VUtils::promptForFileName(const QString &p_title,
const QString &p_label,
const QString &p_default,
std::function<bool(const QString &p_name)> p_checkExistsFunc,
QWidget *p_parent)
{
QString name = p_default;
QString text = p_label;
while (true) {
bool ok;
name = QInputDialog::getText(p_parent,
p_title,
text,
QLineEdit::Normal,
name,
&ok);
if (!ok || name.isEmpty()) {
return "";
}
if (!VUtils::checkFileNameLegal(name)) {
text = QObject::tr("Illegal name. Please try again:");
continue;
}
if (p_checkExistsFunc(name)) {
text = QObject::tr("Name already exists. Please try again:");
continue;
}
break;
}
return name;
}
bool VUtils::onlyHasImgInHtml(const QString &p_html)
{
// Tricky.
QRegExp reg("<(?:p|span|div) ");
return !p_html.contains(reg);
}
int VUtils::elapsedTime(bool p_reset)
{
static QTime tm;
if (p_reset) {
tm = QTime();
return 0;
}
if (tm.isNull()) {
tm.start();
return 0;
}
return tm.restart();
}
QPixmap VUtils::svgToPixmap(const QByteArray &p_content,
const QString &p_background,
qreal p_factor)
{
QSvgRenderer renderer(p_content);
QSize deSz = renderer.defaultSize();
if (p_factor > 0) {
deSz *= p_factor;
}
QPixmap pm(deSz);
if (p_background.isEmpty()) {
// Fill a transparent background to avoid glitchy preview.
pm.fill(QColor(255, 255, 255, 0));
} else {
pm.fill(p_background);
}
QPainter painter(&pm);
renderer.render(&painter);
return pm;
}
QString VUtils::fetchImageLinkUrlToPreview(const QString &p_text, int &p_width, int &p_height)
{
QRegExp regExp(VUtils::c_imageLinkRegExp);
p_width = p_height = -1;
int index = regExp.indexIn(p_text);
if (index == -1) {
return QString();
}
int lastIndex = regExp.lastIndexIn(p_text);
if (lastIndex != index) {
return QString();
}
QString tmp(regExp.cap(7));
if (!tmp.isEmpty()) {
p_width = tmp.toInt();
if (p_width <= 0) {
p_width = -1;
}
}
tmp = regExp.cap(8);
if (!tmp.isEmpty()) {
p_height = tmp.toInt();
if (p_height <= 0) {
p_height = -1;
}
}
return regExp.cap(2).trimmed();
}
QString VUtils::fetchImageLinkUrl(const QString &p_link)
{
QRegExp regExp(VUtils::c_imageLinkRegExp);
int index = regExp.indexIn(p_link);
if (index == -1) {
return QString();
}
return regExp.cap(2).trimmed();
}
QString VUtils::fetchLinkUrl(const QString &p_link)
{
QRegExp regExp(VUtils::c_linkRegExp);
int index = regExp.indexIn(p_link);
if (index == -1) {
return QString();
}
return regExp.cap(2).trimmed();
}
QUrl VUtils::pathToUrl(const QString &p_path)
{
QUrl url;
if (QFileInfo::exists(p_path)) {
url = QUrl::fromLocalFile(p_path);
} else {
url = QUrl(p_path);
}
return url;
}
QString VUtils::parentDirName(const QString &p_path)
{
if (p_path.isEmpty()) {
return p_path;
}
return QFileInfo(p_path).dir().dirName();
}
QString VUtils::purifyUrl(const QString &p_url)
{
int idx = p_url.indexOf('?');
if (idx > -1) {
return p_url.left(idx);
}
return p_url;
}
// Suffix size for QTemporaryFile.
#define MAX_SIZE_SUFFIX_FOR_TEMP_FILE 10
QTemporaryFile *VUtils::createTemporaryFile(QString p_suffix)
{
if (p_suffix.size() > MAX_SIZE_SUFFIX_FOR_TEMP_FILE) {
p_suffix.clear();
}
QString xx = p_suffix.isEmpty() ? "XXXXXX" : "XXXXXX.";
return new QTemporaryFile(QDir::tempPath()
+ QDir::separator()
+ xx
+ p_suffix);
}
QString VUtils::purifyImageTitle(QString p_title)
{
return p_title.remove(QRegExp("[\\r\\n\\[\\]]"));
}
QString VUtils::escapeHtml(QString p_text)
{
p_text.replace(">", "&gt;").replace("<", "&lt;").replace("&", "&amp;");
return p_text;
}
QString VUtils::encodeSpacesInPath(const QString &p_path)
{
QString tmp(p_path);
tmp.replace(' ', "%20");
return tmp;
}
void VUtils::prependDotIfRelative(QString &p_path)
{
if (QFileInfo(p_path).isRelative()
&& !p_path.startsWith("../") && !p_path.startsWith("./")) {
p_path.prepend("./");
}
}