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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Qt-Commercial
#include "qtclapstyle.h"
#include <toml.hpp>
#include <QtCore/qfile.h>
#include <QtGui/qguiapplication.h>
#include <QtCore/qdir.h>
#include <QtGui/qfont.h>
#include <QtGui/qfontdatabase.h>
std::istringstream readQrcToStdStream(const QString& path)
{
// This is sadly needed to convert between qrc <> std::istream
QFile f(path);
if (!f.open(QIODevice::ReadOnly | QIODevice::Text))
std::terminate();
QTextStream qts(&f);
std::istringstream iss(qts.readAll().toStdString());
return iss;
}
void printResourceDir()
{
QDirIterator it(":", QDirIterator::Subdirectories);
while (it.hasNext()) {
qDebug() << it.next();
}
}
QClapStyle::QClapStyle(QObject *parent) : QObject(parent)
{
if (initThemes()) {
if (!loadTheme(0))
qDebug() << "Failed to load default theme";
} else {
qDebug() << "Failed to initialize schemes";
}
if (initFonts()) {
if (!loadFont(0))
qDebug() << "Failed to load default font";
} else {
qDebug() << "Failed to initialize fonts";
}
}
bool QClapStyle::initThemes(QAnyStringView schemeDir)
{
QDirIterator it(schemeDir.toString(), { "*.toml" }, QDir::Files, QDirIterator::Subdirectories);
while (it.hasNext()) {
auto fi = it.nextFileInfo();
auto ss = readQrcToStdStream(fi.absoluteFilePath());
const auto tomlData = toml::parse(ss);
const auto rootTable = toml::get<toml::table>(tomlData); // All tables in files
for (const auto& subTable : rootTable) {
auto temp = toml::get<toml::table>(subTable.second); // Get individual entries
themesList.push_back({QString::fromStdString(subTable.first), fi.filePath() });
}
}
return !themesList.empty();
}
bool QClapStyle::loadTheme(qsizetype idx)
{
// Search for the specified theme name
if (idx < 0 || idx >= themesList.size()) {
qDebug() << "Theme index out of bounds";
return false;
}
// As the toml file can contain multiple schemes, make sure to only load one table
const auto &e = themesList.at(idx);
auto ss = readQrcToStdStream(e.path);
const auto tomlData = toml::parse(ss);
const auto keyVal = toml::find<toml::table>(tomlData, e.name.toStdString());
for (const auto &i : keyVal) {
activeColors.insert({
QString::fromStdString(i.first),
QColor(QString::fromStdString(i.second.as_string().str))
});
}
emit themeChanged();
return true;
}
bool QClapStyle::initFonts(QAnyStringView fontDir)
{
QDirIterator it(fontDir.toString(), { "*.ttf", "*.otf" }, QDir::Files, QDirIterator::Subdirectories);
while (it.hasNext()) {
auto fi = it.nextFileInfo();
fontsList.push_back({ fi.baseName(), fi.filePath() });
}
return !fontsList.empty();
}
QColor QClapStyle::color(QString name) const
{
if (auto it = activeColors.find(name); it != activeColors.end())
return it->second;
return {};
}
bool QClapStyle::loadFont(qsizetype idx)
{
if (idx < 0 || idx >= fontsList.size()) {
qDebug() << "Font index out of bounds";
return false;
}
const auto &e = fontsList.at(idx);
if (activeFontId != -1) {
if (!QFontDatabase::removeApplicationFont(activeFontId)) {
qFatal() << "Failed to remove font: " << activeFontId;
return false;
}
}
activeFontId = QFontDatabase::addApplicationFont(e.path);
if (activeFontId == -1) {
qFatal() << "Failed to add font: " << e.path;
return false;
}
auto families = QFontDatabase::applicationFontFamilies(activeFontId);
if (families.empty()) {
qFatal() << "Failed to get font family";
activeFontId = -1;
return false;
}
QGuiApplication::setFont(QFont(families[0]));
emit fontChanged();
return true;
}
QString QClapStyle::activeTheme(qsizetype idx) const
{
if (idx < 0 || idx >= themesList.size())
return {"Theme index out of bounds"};
return themesList.at(idx).name;
}
QString QClapStyle::activeFont(qsizetype idx) const
{
if (idx < 0 || idx >= fontsList.size())
return {"Font index out of bounds"};
return fontsList.at(idx).name;
}
QStringList QClapStyle::themes() const
{
// TODO: cache
QStringList ths;
ths.reserve(themesList.size());
for (const auto& i : themesList)
ths.push_back(i.name);
return ths;
}
QStringList QClapStyle::fonts() const
{
// TODO: cache
QStringList fnts;
fnts.reserve(fontsList.size());
for (const auto& i : fontsList)
fnts.push_back(i.name);
return fnts;
}
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