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/* Copyright (c) 2013 Stanislaw Halik
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#pragma once
#include <QSettings>
#include <QSettings>
#include <QMap>
#include <QString>
#include <QVariant>
#include <memory>
#include <cassert>
#include <QWidget>
#include <QComboBox>
#include <QCheckBox>
#include <QDoubleSpinBox>
#include <QSpinBox>
#include <QSlider>
#include <QLineEdit>
namespace options {
template<typename T>
inline T qcruft_to_t (const QVariant& t);
template<>
inline int qcruft_to_t<int>(const QVariant& t)
{
return t.toInt();
}
template<>
inline QString qcruft_to_t<QString>(const QVariant& t)
{
return t.toString();
}
template<>
inline bool qcruft_to_t<bool>(const QVariant& t)
{
return t.toBool();
}
template<>
inline double qcruft_to_t<double>(const QVariant& t)
{
return t.toDouble();
}
template<>
inline QVariant qcruft_to_t<QVariant>(const QVariant& t)
{
return t;
}
// snapshot of qsettings group at given time
class group {
private:
QMap<QString, QVariant> map;
QString name;
public:
group(const QString& name) : name(name)
{
QSettings settings(group::org);
QString currentFile =
settings.value("SettingsFile",
QCoreApplication::applicationDirPath() + "/settings/default.ini" ).toString();
QSettings iniFile(currentFile, QSettings::IniFormat);
iniFile.beginGroup(name);
for (auto& k : iniFile.childKeys())
map[k] = iniFile.value(k);
iniFile.endGroup();
}
static constexpr const char* org = "opentrack";
void save() {
QSettings settings(group::org);
QString currentFile =
settings.value("SettingsFile",
QCoreApplication::applicationDirPath() + "/settings/default.ini" ).toString();
QSettings s(currentFile, QSettings::IniFormat);
s.beginGroup(name);
for (auto& k : map.keys())
s.setValue(k, map[k]);
s.endGroup();
}
template<typename T>
T get(const QString& k) {
return qcruft_to_t<T>(map.value(k));
}
void put(const QString& s, const QVariant& d)
{
map[s] = d;
}
bool contains(const QString& s)
{
return map.contains(s);
}
};
class impl_bundle {
private:
const QString group_name;
group saved;
group transient;
impl_bundle(const impl_bundle&) = delete;
impl_bundle& operator=(const impl_bundle&) = delete;
bool modified;
public:
impl_bundle(const QString& group_name) :
group_name(group_name),
saved(group_name),
transient(saved),
modified(false)
{
}
/* keep in mind doesn't fire signals */
void reload() {
saved = group(group_name);
transient = saved;
}
std::shared_ptr<impl_bundle> make(const QString& name) {
return std::make_shared<impl_bundle>(name);
}
void store(const QString& name, const QVariant& datum)
{
if (!transient.contains(name) || datum != transient.get<QVariant>(name))
{
modified = true;
transient.put(name, datum);
}
}
bool contains(const QString& name)
{
return transient.contains(name);
}
template<typename T>
T get(QString& name) {
return transient.get<T>(name);
}
void save()
{
modified = false;
saved = transient;
transient.save();
}
void revert()
{
modified = false;
transient = saved;
}
bool modifiedp() const { return modified; }
};
typedef std::shared_ptr<impl_bundle> pbundle;
class base_value : public QObject {
Q_OBJECT
public:
virtual QVariant operator=(const QVariant& datum) = 0;
public slots:
#define DEFINE_SLOT(t) void setValue(t datum) { this->operator=(datum); }
DEFINE_SLOT(double)
DEFINE_SLOT(int)
DEFINE_SLOT(QString)
DEFINE_SLOT(bool)
signals:
#define DEFINE_SIGNAL(t) void valueChanged(t);
DEFINE_SIGNAL(double)
DEFINE_SIGNAL(int)
DEFINE_SIGNAL(QString)
DEFINE_SIGNAL(bool)
};
template<typename T>
class value : public base_value {
private:
QString self_name;
pbundle b;
public:
value(const pbundle& b, const QString& name, T def) :
self_name(name),
b(b)
{
if (!b->contains(name))
{
QVariant cruft(def);
b->store(self_name, cruft);
}
}
operator T() { return b->get<T>(self_name); }
QVariant operator=(const QVariant& datum) {
b->store(self_name, datum);
switch (datum.type())
{
#define BRANCH_ON(e, m) case QVariant::e: return valueChanged(datum.m()), datum
BRANCH_ON(Int, toInt);
BRANCH_ON(Double, toDouble);
BRANCH_ON(String, toString);
BRANCH_ON(Bool, toBool);
default: abort();
}
}
};
template<typename T, typename Q>
inline void tie_setting(value<T>&, Q*);
template<>
inline void tie_setting(value<int>& v, QComboBox* cb)
{
base_value::connect(cb, SIGNAL(currentIndexChanged(int)), &v, SLOT(setValue(int)));
base_value::connect(&v, SIGNAL(valueChanged(int)), cb, SLOT(setCurrentIndex(int)));
cb->setCurrentIndex(v);
}
template<>
inline void tie_setting(value<bool>& v, QCheckBox* cb)
{
base_value::connect(cb, SIGNAL(toggled(bool)), &v, SLOT(setValue(bool)));
base_value::connect(&v, SIGNAL(valueChanged(bool)), cb, SLOT(setChecked(bool)));
cb->setChecked(v);
}
template<>
inline void tie_setting(value<double>& v, QDoubleSpinBox* dsb)
{
base_value::connect(dsb, SIGNAL(valueChanged(double)), &v, SLOT(setValue(double)));
base_value::connect(&v, SIGNAL(valueChanged(double)), dsb, SLOT(setValue(double)));
dsb->setValue(v);
}
template<>
inline void tie_setting(value<int>& v, QSpinBox* sb)
{
base_value::connect(sb, SIGNAL(valueChanged(int)), &v, SLOT(setValue(int)));
base_value::connect(&v, SIGNAL(valueChanged(int)), sb, SLOT(setValue(int)));
sb->setValue(v);
}
template<>
inline void tie_setting(value<int>& v, QSlider* sl)
{
base_value::connect(sl, SIGNAL(valueChanged(int)), &v, SLOT(setValue(int)));
base_value::connect(&v, SIGNAL(valueChanged(int)), sl, SLOT(setValue(int)));
sl->setValue(v);
}
template<>
inline void tie_setting(value<QString>& v, QLineEdit* le)
{
base_value::connect(le, SIGNAL(textChanged(QString)), &v, SLOT(setValue(QString)));
base_value::connect(&v, SIGNAL(valueChanged(QString)),le, SLOT(setText(QString)));
le->setText(v);
}
inline pbundle bundle(const QString& group) {
return std::make_shared<impl_bundle>(group);
}
}
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