/* Copyright (C) 2018 Olivier Goffart <ogoffart@woboq.com>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//! This crate contains manually generated bindings to Qt basic value types.
//! It is meant to be used by other crates, such as the `qmetaobject` crate which re-expose them.
//!
//! The Qt types are basically exposed using the [`mod@cpp`] crate. They have manually writen rust idiomatic
//! API which expose the C++ API.
//! These types are the direct equivalent of the Qt types and are exposed on the stack.
//!
//! In addition, the build script of this crate expose some metadata to downstream crate that also
//! want to use Qt's C++ API.
//! Build scripts of crates that depends directly from this crate will have the following
//! environment variables set when the build script is run:
//! - `DEP_QT_VERSION`: The Qt version as given by qmake.
//! - `DEP_QT_INCLUDE_PATH`: The include directory to give to the `cpp_build` crate to locate the Qt headers.
//! - `DEP_QT_LIBRARY_PATH`: The path containing the Qt libraries.
//! - `DEP_QT_COMPILE_FLAGS`: A list of flags separated by `;`
//! - `DEP_QT_FOUND`: Set to 1 when qt was found, or 0 if qt was not found and the `required` feature is not set.
//! - `DEP_QT_ERROR_MESSAGE`: when `DEP_QT_FOUND` is 0, contains the error that caused the build to fail
//!
//! ## Finding Qt
//!
//! This is the algorithm used to find Qt.
//!
//! - You can set the environment variable `QT_INCLUDE_PATH` and `QT_LIBRARY_PATH` to be a single
//!   directory where the Qt headers and Qt libraries are installed.
//! - Otherwise you can specify a `QMAKE` environment variable with the absolute path of the
//!   `qmake` executable which will be used to query these paths.
//! - If none of these environment variable is set, the `qmake` executable found in `$PATH`.
//!
//! ## Philosophy
//!
//! The goal of this crate is to expose a idiomatic Qt API for the core value type classes.
//! The API is manually generated to expose required feature in the most rust-like API, while
//! still keeping the similarities with the Qt API itself.
//!
//! It is not meant to expose all of the Qt API exhaustively, but only the part which is
//! relevant for the usage in other crate.
//! If you see a feature missing, feel free to write a issue or a pull request.
//!
//! Note that this crate concentrate on the value types, not the widgets or the
//! the `QObject`.  For that, there is the `qmetaobject` crate.
//!
//! ## Usage with the `cpp` crate
//!
//! Here is an example that make use of the types exposed by this crate in combination
//! with the [`mod@cpp`] crate to call native API:
//!
//! In `Cargo.toml`
//! ```toml
//! #...
//! [dependencies]
//! qttype = "0.1"
//! cpp = "0.5"
//! #...
//! [build-dependencies]
//! cpp_build = "0.5"
//! ```
//!
//! Note: It is important to depend directly on `qttype`, it is not enough to rely on the
//! dependency coming transitively from another dependencies, otherwise the `DEP_QT_*`
//! environment variables won't be defined.
//!
//! Then in the `build.rs` file:
//! ```rust,no_run
//! fn main() {
//!     let mut config = cpp_build::Config::new();
//!     config.include(std::env::var("DEP_QT_INCLUDE_PATH").unwrap());
//!     for f in std::env::var("DEP_QT_COMPILE_FLAGS").unwrap().split_terminator(";") {
//!        config.flag(f);
//!     }
//!     config.build("src/main.rs");
//! }
//! ```
//!
//! With that, you can now use the types inside your .rs files:
//!
//! ```ignore
//! let byte_array = qttypes::QByteArray::from("Hello World!");
//! cpp::cpp!([byte_array as "QByteArray"] { qDebug() << byte_array; });
//! ```
//!
//! You will find a small but working example in the
//! [qmetaobject-rs repository](https://github.com/woboq/qmetaobject-rs/tree/master/examples/graph).
//!
//! ## Cargo Features
//!
//! - **`required`**: When this feature is enabled (the default), the build script will panic with an error
//!   if Qt is not found. Otherwise, when not enabled, the build will continue, but any use of the classes will
//!   panic at runtime.
//! - **`chrono`**: enable the conversion between [`QDateTime`] related types and the types from the `chrono` crate.
//!
//! Link against these Qt modules using cargo features:
//!
//! | Cargo feature             | Qt module             |
//! | ------------------------- | --------------------- |
//! | **`qtmultimedia`**        | Qt Multimedia         |
//! | **`qtmultimediawidgets`** | Qt Multimedia Widgets |
//! | **`qtquick`**             | Qt Quick              |
//! | **`qtquickcontrols2`**    | Qt Quick Controls     |
//! | **`qtsql`**               | Qt SQL                |
//! | **`qttest`**              | Qt Test               |
//! | **`qtwebengine`**         | Qt WebEngine          |
//!

#![cfg_attr(no_qt, allow(unused))]

use std::collections::HashMap;
use std::convert::From;
use std::fmt;
use std::hash::Hash;
use std::iter::FromIterator;
use std::ops::{Index, IndexMut};

#[cfg(feature = "chrono")]
use chrono::prelude::*;

#[cfg(no_qt)]
pub(crate) mod no_qt {
    pub fn panic<T>() -> T {
        panic!("Qt was not found during build")
    }
}

pub(crate) mod internal_prelude {
    #[cfg(not(no_qt))]
    pub(crate) use cpp::{cpp, cpp_class};
    #[cfg(no_qt)]
    macro_rules! cpp {
        {{ $($t:tt)* }} => {};
        {$(unsafe)? [$($a:tt)*] -> $ret:ty as $b:tt { $($t:tt)* } } => {
            crate::no_qt::panic::<$ret>()
        };
        { $($t:tt)* } => {
            crate::no_qt::panic::<()>()
        };
    }

    #[cfg(no_qt)]
    macro_rules! cpp_class {
        ($(#[$($attrs:tt)*])* $vis:vis unsafe struct $name:ident as $type:expr) => {
            #[derive(Default, Ord, Eq, PartialEq, PartialOrd, Clone, Copy)]
            #[repr(C)]
            $vis struct $name;
        };
    }
    #[cfg(no_qt)]
    pub(crate) use cpp;
    #[cfg(no_qt)]
    pub(crate) use cpp_class;
}
use internal_prelude::*;

mod qtcore;
pub use crate::qtcore::{
    qreal, NormalizationForm, QByteArray, QListIterator, QSettings, QString, QStringList, QUrl,
    QVariant, QVariantList, UnicodeVersion,
};

mod qtgui;
pub use crate::qtgui::{QColor, QColorNameFormat, QColorSpec, QRgb, QRgba64};

cpp! {{
    #include <QtCore/QByteArray>
    #include <QtCore/QDateTime>
    #include <QtCore/QModelIndex>
    #include <QtCore/QString>
    #include <QtCore/QUrl>
    #include <QtCore/QVariant>

    #include <QtGui/QImage>
    #include <QtGui/QPixmap>
    #include <QtGui/QPainter>
    #include <QtGui/QPen>
    #include <QtGui/QBrush>
}}

cpp_class!(
    /// Wrapper around [`QDate`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qdate.html
    #[derive(PartialEq, PartialOrd, Eq, Ord)]
    pub unsafe struct QDate as "QDate"
);
impl QDate {
    /// Wrapper around [`QDate(int y, int m, int d)`][ctor] constructor.
    ///
    /// [ctor]: https://doc.qt.io/qt-5/qdate.html#QDate-2
    pub fn from_y_m_d(y: i32, m: i32, d: i32) -> Self {
        cpp!(unsafe [y as "int", m as "int", d as "int"] -> QDate as "QDate" {
            return QDate(y, m, d);
        })
    }

    /// Wrapper around [`QDate::getDate(int *year, int *month, int *day)`][method] method.
    ///
    /// # Wrapper-specific
    ///
    /// Returns the year, month and day components as a tuple, instead of mutable references.
    ///
    /// [method]: https://doc.qt.io/qt-5/qdate.html#getDate
    pub fn get_y_m_d(&self) -> (i32, i32, i32) {
        let mut res = (0, 0, 0);
        let (ref mut y, ref mut m, ref mut d) = res;

        // In version prior to Qt 5.7, this method was marked non-const.
        // A #[cfg(qt_5_7)] attribute does not solve that issue, because the cpp_build crate is not
        // smart enough not to compile the non-qualifying closure.
        cpp!(unsafe [self as "QDate*", y as "int*", m as "int*", d as "int*"] {
            return self->getDate(y, m, d);
        });

        res
    }

    /// Wrapper around [`QDate::isValid()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qdate.html#isValid
    pub fn is_valid(&self) -> bool {
        cpp!(unsafe [self as "const QDate*"] -> bool as "bool" {
            return self->isValid();
        })
    }
}
#[cfg(feature = "chrono")]
impl From<NaiveDate> for QDate {
    fn from(a: NaiveDate) -> QDate {
        QDate::from_y_m_d(a.year() as i32, a.month() as i32, a.day() as i32)
    }
}
#[cfg(feature = "chrono")]
impl Into<NaiveDate> for QDate {
    fn into(self) -> NaiveDate {
        let (y, m, d) = self.get_y_m_d();
        NaiveDate::from_ymd(y, m as u32, d as u32)
    }
}

#[test]
fn test_qdate() {
    let date = QDate::from_y_m_d(2019, 10, 22);
    assert_eq!((2019, 10, 22), date.get_y_m_d());
}

#[test]
fn test_qdate_is_valid() {
    let valid_qdate = QDate::from_y_m_d(2019, 10, 26);
    assert!(valid_qdate.is_valid());

    let invalid_qdate = QDate::from_y_m_d(-1, -1, -1);
    assert!(!invalid_qdate.is_valid());
}

#[cfg(feature = "chrono")]
#[test]
fn test_qdate_chrono() {
    let chrono_date = NaiveDate::from_ymd(2019, 10, 22);
    let qdate: QDate = chrono_date.into();
    let actual_chrono_date: NaiveDate = qdate.into();

    // Ensure that conversion works for both the Into trait and get_y_m_d() function
    assert_eq!((2019, 10, 22), qdate.get_y_m_d());
    assert_eq!(chrono_date, actual_chrono_date);
}

cpp_class!(
    /// Wrapper around [`QTime`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qtime.html
    #[derive(PartialEq, PartialOrd, Eq, Ord)]
    pub unsafe struct QTime as "QTime"
);
impl QTime {
    /// Wrapper around [`QTime(int h, int m, int s = 0, int ms = 0)`][ctor] constructor.
    ///
    /// # Wrapper-specific
    ///
    /// Default arguments converted to `Option`s.
    ///
    /// [ctor]: https://doc.qt.io/qt-5/qtime.html#QTime-2
    pub fn from_h_m_s_ms(h: i32, m: i32, s: Option<i32>, ms: Option<i32>) -> Self {
        let s = s.unwrap_or(0);
        let ms = ms.unwrap_or(0);

        cpp!(unsafe [h as "int", m as "int", s as "int", ms as "int"] -> QTime as "QTime" {
            return QTime(h, m, s, ms);
        })
    }

    /// Wrapper around [`QTime::hour()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qtime.html#hour
    pub fn get_hour(&self) -> i32 {
        cpp!(unsafe [self as "const QTime*"] -> i32 as "int" {
            return self->hour();
        })
    }

    /// Wrapper around [`QTime::minute()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qtime.html#minute
    pub fn get_minute(&self) -> i32 {
        cpp!(unsafe [self as "const QTime*"] -> i32 as "int" {
            return self->minute();
        })
    }

    /// Wrapper around [`QTime::second()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qtime.html#second
    pub fn get_second(&self) -> i32 {
        cpp!(unsafe [self as "const QTime*"] -> i32 as "int" {
            return self->second();
        })
    }

    /// Wrapper around [`QTime::msec()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qtime.html#msec
    pub fn get_msec(&self) -> i32 {
        cpp!(unsafe [self as "const QTime*"] -> i32 as "int" {
            return self->msec();
        })
    }

    /// Convenience function for obtaining the hour, minute, second and millisecond components.
    pub fn get_h_m_s_ms(&self) -> (i32, i32, i32, i32) {
        (self.get_hour(), self.get_minute(), self.get_second(), self.get_msec())
    }

    /// Wrapper around [`QTime::isValid()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qtime.html#isValid
    pub fn is_valid(&self) -> bool {
        cpp!(unsafe [self as "const QTime*"] -> bool as "bool" {
            return self->isValid();
        })
    }
}

#[cfg(feature = "chrono")]
impl From<NaiveTime> for QTime {
    fn from(a: NaiveTime) -> QTime {
        QTime::from_h_m_s_ms(
            a.hour() as i32,
            a.minute() as i32,
            Some(a.second() as i32),
            Some(a.nanosecond() as i32 / 1_000_000),
        )
    }
}

#[cfg(feature = "chrono")]
impl Into<NaiveTime> for QTime {
    fn into(self) -> NaiveTime {
        let (h, m, s, ms) = self.get_h_m_s_ms();
        NaiveTime::from_hms_milli(h as u32, m as u32, s as u32, ms as u32)
    }
}

#[test]
fn test_qtime() {
    let qtime = QTime::from_h_m_s_ms(10, 30, Some(40), Some(300));
    assert_eq!((10, 30, 40, 300), qtime.get_h_m_s_ms());
}

#[cfg(feature = "chrono")]
#[test]
fn test_qtime_chrono() {
    let chrono_time = NaiveTime::from_hms(10, 30, 50);
    let qtime: QTime = chrono_time.into();
    let actual_chrono_time: NaiveTime = qtime.into();

    // Ensure that conversion works for both the Into trait and get_h_m_s_ms() function
    assert_eq!((10, 30, 50, 0), qtime.get_h_m_s_ms());
    assert_eq!(chrono_time, actual_chrono_time);
}

#[test]
fn test_qtime_is_valid() {
    let valid_qtime = QTime::from_h_m_s_ms(10, 30, Some(40), Some(300));
    assert!(valid_qtime.is_valid());

    let invalid_qtime = QTime::from_h_m_s_ms(10, 30, Some(40), Some(9999));
    assert!(!invalid_qtime.is_valid());
}

cpp_class!(
    /// Wrapper around [`QDateTime`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qdatetime.html
    #[derive(PartialEq, PartialOrd, Eq, Ord)]
    pub unsafe struct QDateTime as "QDateTime"
);
impl QDateTime {
    /// Wrapper around [`QDateTime(const QDateTime &other)`][ctor] constructor.
    ///
    /// [ctor]: https://doc.qt.io/qt-5/qdatetime.html#QDateTime-1
    pub fn from_date(date: QDate) -> Self {
        cpp!(unsafe [date as "QDate"] -> QDateTime as "QDateTime" {
        #if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
                    return date.startOfDay();
        #else
                    return QDateTime(date);
        #endif
        })
    }

    /// Wrapper around [`QDateTime(const QDate &date, const QTime &time, Qt::TimeSpec spec = Qt::LocalTime)`][ctor] constructor.
    ///
    /// # Wrapper-specific
    ///
    /// `spec` is left as it is, thus it is always `Qt::LocalTime`.
    ///
    /// [ctor]: https://doc.qt.io/qt-5/qdatetime.html#QDateTime-2
    pub fn from_date_time_local_timezone(date: QDate, time: QTime) -> Self {
        cpp!(unsafe [date as "QDate", time as "QTime"] -> QDateTime as "QDateTime" {
            return QDateTime(date, time);
        })
    }

    /// Wrapper around [`QDateTime::date()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qdatetime.html#date
    pub fn get_date(&self) -> QDate {
        cpp!(unsafe [self as "const QDateTime*"] -> QDate as "QDate" {
            return self->date();
        })
    }

    /// Wrapper around [`QDateTime::time()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qdatetime.html#time
    pub fn get_time(&self) -> QTime {
        cpp!(unsafe [self as "const QDateTime*"] -> QTime as "QTime" {
            return self->time();
        })
    }

    /// Convenience function for obtaining both date and time components.
    pub fn get_date_time(&self) -> (QDate, QTime) {
        (self.get_date(), self.get_time())
    }

    /// Wrapper around [`QDateTime::isValid()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qdatetime.html#isValid
    pub fn is_valid(&self) -> bool {
        cpp!(unsafe [self as "const QDateTime*"] -> bool as "bool" {
            return self->isValid();
        })
    }
}

#[test]
fn test_qdatetime_from_date() {
    let qdate = QDate::from_y_m_d(2019, 10, 22);
    let qdatetime = QDateTime::from_date(qdate);
    let actual_qdate = qdatetime.get_date();

    assert_eq!((2019, 10, 22), actual_qdate.get_y_m_d());
}

#[test]
fn test_qdatetime_from_date_time_local_timezone() {
    let qdate = QDate::from_y_m_d(2019, 10, 22);
    let qtime = QTime::from_h_m_s_ms(10, 30, Some(40), Some(300));
    let qdatetime = QDateTime::from_date_time_local_timezone(qdate, qtime);
    let (actual_qdate, actual_qtime) = qdatetime.get_date_time();

    assert_eq!((2019, 10, 22), actual_qdate.get_y_m_d());
    assert_eq!((10, 30, 40, 300), actual_qtime.get_h_m_s_ms());

    assert_eq!(10, actual_qtime.get_hour());
    assert_eq!(30, actual_qtime.get_minute());
    assert_eq!(40, actual_qtime.get_second());
    assert_eq!(300, actual_qtime.get_msec());
}

#[test]
fn test_qdatetime_is_valid() {
    let valid_qdate = QDate::from_y_m_d(2019, 10, 26);
    let invalid_qdate = QDate::from_y_m_d(-1, -1, -1);

    let valid_qtime = QTime::from_h_m_s_ms(10, 30, Some(40), Some(300));
    let invalid_qtime = QTime::from_h_m_s_ms(10, 30, Some(40), Some(9999));

    let valid_qdatetime_from_date = QDateTime::from_date(valid_qdate);
    assert!(valid_qdatetime_from_date.is_valid());

    let valid_qdatetime_from_valid_date_valid_time =
        QDateTime::from_date_time_local_timezone(valid_qdate, valid_qtime);
    assert!(valid_qdatetime_from_valid_date_valid_time.is_valid());

    // Refer to the documentation for QDateTime's constructors using QDate, QTime.
    // If the date is valid, but the time is not, the time will be set to midnight
    let valid_qdatetime_from_valid_date_invalid_time =
        QDateTime::from_date_time_local_timezone(valid_qdate, invalid_qtime);
    assert!(valid_qdatetime_from_valid_date_invalid_time.is_valid());

    let invalid_qdatetime_from_invalid_date_valid_time =
        QDateTime::from_date_time_local_timezone(invalid_qdate, valid_qtime);
    assert!(!invalid_qdatetime_from_invalid_date_valid_time.is_valid());

    let invalid_qdatetime_from_invalid_date_invalid_time =
        QDateTime::from_date_time_local_timezone(invalid_qdate, invalid_qtime);
    assert!(!invalid_qdatetime_from_invalid_date_invalid_time.is_valid());
}

cpp_class!(
    /// Wrapper around [`QVariantMap`][type] typedef.
    ///
    /// [type]: https://doc.qt.io/qt-5/qvariant.html#QVariantMap-typedef
    #[derive(Default, PartialEq, Eq)]
    pub unsafe struct QVariantMap as "QVariantMap"
);

impl QVariantMap {
    /// Wrapper around [`insert(int, const QString &, const QVariant &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qlist.html#insert
    pub fn insert(&mut self, key: QString, element: QVariant) {
        cpp!(unsafe [self as "QVariantMap*", key as "QString", element as "QVariant"] {
            self->insert(key, std::move(element));
        })
    }

    /// Wrapper around [`remove(const QString &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#remove
    pub fn remove(&mut self, key: QString) -> usize {
        cpp!(unsafe [self as "QVariantMap*", key as "QString"] -> usize as "size_t" {
            return self->remove(key);
        })
    }

    /// Wrapper around [`take(const QString &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#take
    pub fn take(&mut self, key: QString) -> QVariant {
        cpp!(unsafe [self as "QVariantMap*", key as "QString"] -> QVariant as "QVariant" {
            return self->take(key);
        })
    }

    /// Wrapper around [`size()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#size
    pub fn len(&self) -> usize {
        cpp!(unsafe [self as "const QVariantMap*"] -> usize as "size_t" {
            return self->size();
        })
    }

    /// Wrapper around [`isEmpty()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#isEmpty
    pub fn is_empty(&self) -> bool {
        cpp!(unsafe [self as "const QVariantMap*"] -> bool as "bool" {
            return self->isEmpty();
        })
    }

    /// Wrapper around [`contains(const QString &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#contains
    pub fn contains(&self, key: QString) -> bool {
        cpp!(unsafe [self as "const QVariantMap*", key as "QString"] -> bool as "bool" {
            return self->contains(key);
        })
    }

    /// Wrapper around [`clear()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#clear
    pub fn clear(&mut self) {
        cpp!(unsafe [self as "QVariantMap*"] {
            self->clear();
        })
    }

    /// Wrapper around [`value(const QString &, const QVariant &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#value
    pub fn value(&self, key: QString, default_value: QVariant) -> QVariant {
        cpp!(unsafe [self as "const QVariantMap*", key as "QString", default_value as "QVariant"] -> QVariant as "QVariant" {
            return self->value(key, default_value);
        })
    }

    /// Wrapper around [`key(const QVariant &, const QString &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmap.html#key
    pub fn key(&self, value: QVariant, default_key: QString) -> QString {
        cpp!(unsafe [self as "const QVariantMap*", default_key as "QString", value as "QVariant"] -> QString as "QString" {
            return self->key(value, default_key);
        })
    }
}

impl Index<QString> for QVariantMap {
    type Output = QVariant;

    /// Wrapper around [`at(int)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qlist.html#at
    #[track_caller]
    fn index(&self, key: QString) -> &Self::Output {
        cpp!(unsafe [self as "const QVariantMap*", key as "QString"] -> Option<&QVariant> as "const QVariant*" {
                auto x = self->constFind(key);
                if (x == self->constEnd()) {
                    return NULL;
                } else {
                    return &x.value();
                }
            }).expect("key not in the QVariant")
    }
}
impl IndexMut<QString> for QVariantMap {
    /// Wrapper around [`operator[](int)`][method] operator method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qlist.html#operator-5b-5d
    fn index_mut(&mut self, key: QString) -> &mut Self::Output {
        unsafe {
            &mut *cpp!([self as "QVariantMap*", key as "QString"] -> *mut QVariant as "QVariant*" {
                return &(*self)[key];
            })
        }
    }
}

impl fmt::Debug for QVariantMap {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_map().entries(self.into_iter()).finish()
    }
}

cpp_class!(unsafe struct QVariantMapIteratorInternal as "QVariantMap::iterator");

/// Internal class used to iterate over a [`QVariantMap`]
pub struct QVariantMapIterator<'a> {
    map: &'a QVariantMap,
    iterator: QVariantMapIteratorInternal,
}

impl<'a> QVariantMapIterator<'a> {
    fn key(&self) -> Option<&'a QString> {
        let iterator = &self.iterator;
        cpp!(unsafe [iterator as "const QVariantMap::iterator*"] -> Option<&QString> as "const QString*" {
            return &iterator->key();
        })
    }

    fn value(&self) -> Option<&'a QVariant> {
        let iterator = &self.iterator;
        cpp!(unsafe [iterator as "const QVariantMap::iterator*"] -> Option<&QVariant> as "QVariant*" {
            return &iterator->value();
        })
    }

    fn check_end(&self) -> bool {
        let map = self.map;
        let iterator = &self.iterator;
        cpp!(unsafe [iterator as "const QVariantMap::iterator*", map as "const QVariantMap*"] -> bool as "bool" {
            return (*iterator == map->end());
        })
    }

    fn increment(&mut self) {
        let iterator = &self.iterator;
        cpp!(unsafe [iterator as "QVariantMap::iterator*"] {
            ++(*iterator);
        })
    }
}

impl<'a> Iterator for QVariantMapIterator<'a> {
    type Item = (&'a QString, &'a QVariant);

    fn next(&mut self) -> Option<Self::Item> {
        if self.check_end() {
            return None;
        }

        let key = self.key();
        let value = self.value();

        self.increment();

        match (key, value) {
            (Some(k), Some(v)) => Some((k, v)),
            _ => None,
        }
    }
}

impl<'a> IntoIterator for &'a QVariantMap {
    type Item = (&'a QString, &'a QVariant);
    type IntoIter = QVariantMapIterator<'a>;

    fn into_iter(self) -> Self::IntoIter {
        let iter = cpp!(unsafe [self as "QVariantMap*"] -> QVariantMapIteratorInternal as "QVariantMap::iterator" {
            return self->begin();
        });
        Self::IntoIter { map: self, iterator: iter }
    }
}

impl<K, V> FromIterator<(K, V)> for QVariantMap
where
    K: Into<QString>,
    V: Into<QVariant>,
{
    fn from_iter<I: IntoIterator<Item = (K, V)>>(iter: I) -> Self {
        let mut m = QVariantMap::default();
        for i in iter {
            let (k, v) = i;
            m.insert(k.into(), v.into());
        }
        m
    }
}

impl<K, V> From<HashMap<K, V>> for QVariantMap
where
    K: Into<QString>,
    V: Into<QVariant>,
{
    fn from(m: HashMap<K, V>) -> Self {
        m.into_iter().collect()
    }
}

impl<K, V, const N: usize> From<[(K, V); N]> for QVariantMap
where
    K: Into<QString>,
    V: Into<QVariant>,
{
    fn from(m: [(K, V); N]) -> Self {
        let mut temp = QVariantMap::default();
        for (key, val) in m {
            temp.insert(key.into(), val.into());
        }
        temp
    }
}

impl<K, V> From<QVariantMap> for HashMap<K, V>
where
    K: Hash + Eq,
    V: Eq,
    QString: Into<K>,
    QVariant: Into<V>,
{
    fn from(m: QVariantMap) -> Self {
        m.into_iter().map(|(k, v)| (k.clone().into(), v.clone().into())).collect()
    }
}

#[cfg(test)]
mod qvariantmap_tests {
    use super::*;

    #[test]
    fn test_qvariantmap() {
        let mut map = QVariantMap::default();

        let key1 = QString::from("a");
        let val1 = QString::from("abc");

        assert!(map.is_empty());
        map.insert(key1.clone(), val1.clone().into());
        assert_eq!(map.len(), 1);
        assert_eq!(map[key1.clone()].to_qbytearray().to_string(), val1.to_string());

        assert_eq!(map.take(key1.clone()).to_qbytearray().to_string(), val1.to_string());
        assert!(map.is_empty());

        map[key1.clone()] = val1.clone().into();

        let default_value = QVariant::from(10);

        assert_eq!(map[key1.clone()].to_qbytearray().to_string(), val1.to_string());
        assert_eq!(map.value(key1.clone(), default_value.clone()), val1.clone().into());
        assert_eq!(map.value(val1.clone(), default_value.clone()), default_value.clone());

        assert_eq!(map.key(val1.clone().into(), val1.clone()), key1.clone());
        assert_eq!(map.key(key1.clone().into(), val1.clone()), val1.clone());
    }

    #[test]
    #[should_panic(expected = "key not in the QVariant")]
    fn test_index_panic() {
        let map = QVariantMap::default();

        map[QString::from("t")].to_qbytearray().to_string();
    }

    #[test]
    fn test_iter() {
        let hashmap =
            HashMap::from([("Mercury", 0.4), ("Venus", 0.7), ("Earth", 1.0), ("Mars", 1.5)]);
        let map: QVariantMap = hashmap.clone().into();

        assert_eq!(map.len(), hashmap.len());

        for (k, v) in map.into_iter() {
            assert_eq!(hashmap[k.to_string().as_str()].to_string(), v.to_qbytearray().to_string());
        }
    }

    #[test]
    fn test_from() {
        let hashmap1 = HashMap::from([
            ("A".to_string(), QVariant::from(QString::from("abc"))),
            ("B".to_string(), QVariant::from(QString::from("def"))),
        ]);
        let qvariantmap1: QVariantMap = hashmap1.clone().into();
        let hashmap2 = qvariantmap1.clone().into();
        assert_eq!(hashmap1, hashmap2);

        let qvariantmap2 = QVariantMap::from([
            ("A".to_string(), QVariant::from(QString::from("abc"))),
            ("B".to_string(), QVariant::from(QString::from("def"))),
        ]);
        assert_eq!(qvariantmap1, qvariantmap2);
    }
}

cpp_class!(
    /// Wrapper around [`QModelIndex`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qmodelindex.html
    #[derive(PartialEq, Eq)]
    pub unsafe struct QModelIndex as "QModelIndex"
);
impl QModelIndex {
    /// Wrapper around [`internalId()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmodelindex.html#internalId
    pub fn id(&self) -> usize {
        cpp!(unsafe [self as "const QModelIndex*"] -> usize as "uintptr_t" { return self->internalId(); })
    }

    /// Wrapper around [`column()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmodelindex.html#column
    pub fn column(&self) -> i32 {
        cpp!(unsafe [self as "const QModelIndex*"] -> i32 as "int" { return self->column(); })
    }

    /// Wrapper around [`row()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmodelindex.html#row
    pub fn row(&self) -> i32 {
        cpp!(unsafe [self as "const QModelIndex*"] -> i32 as "int" { return self->row(); })
    }

    /// Wrapper around [`isValid()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qmodelindex.html#isValid
    pub fn is_valid(&self) -> bool {
        cpp!(unsafe [self as "const QModelIndex*"] -> bool as "bool" { return self->isValid(); })
    }
}

/// Bindings for [`QRectF`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qrectf.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QRectF {
    pub x: qreal,
    pub y: qreal,
    pub width: qreal,
    pub height: qreal,
}
impl QRectF {
    /// Wrapper around [`contains(const QPointF &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qrectf.html#contains
    pub fn contains(&self, pos: QPointF) -> bool {
        cpp!(unsafe [self as "const QRectF*", pos as "QPointF"] -> bool as "bool" {
            return self->contains(pos);
        })
    }

    /// Same as the [`topLeft`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qrectf.html#topLeft
    pub fn top_left(&self) -> QPointF {
        QPointF { x: self.x, y: self.y }
    }

    /// Same as the [`isValid`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qrectf.html#isValid
    pub fn is_valid(&self) -> bool {
        self.width > 0. && self.height > 0.
    }
}

/// Bindings for [`QPointF`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qpointf.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QPointF {
    pub x: qreal,
    pub y: qreal,
}
impl std::ops::Add for QPointF {
    type Output = QPointF;
    /// Wrapper around [`operator+(const QPointF &, const QPointF &)`][func] function.
    ///
    /// [func]: https://doc.qt.io/qt-5/qpointf.html#operator-2b
    fn add(self, other: QPointF) -> QPointF {
        QPointF { x: self.x + other.x, y: self.y + other.y }
    }
}
impl std::ops::AddAssign for QPointF {
    /// Wrapper around [`operator+=(const QPointF &`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qpointf.html#operator-2b-eq
    fn add_assign(&mut self, other: QPointF) {
        *self = QPointF { x: self.x + other.x, y: self.y + other.y };
    }
}

/// Bindings for [`QSizeF`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qsizef.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QSizeF {
    pub width: qreal,
    pub height: qreal,
}

#[test]
fn test_qpointf_qrectf() {
    let rect = QRectF { x: 200., y: 150., width: 60., height: 75. };
    let pt = QPointF { x: 12., y: 5.5 };
    assert!(!rect.contains(pt));
    assert!(rect.contains(pt + rect.top_left()));
}

/// Bindings for [`QSize`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qsize.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QSize {
    pub width: u32,
    pub height: u32,
}

/// Bindings for [`QPoint`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qpoint.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QPoint {
    pub x: i32,
    pub y: i32,
}

/// Bindings for [`QMargins`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qmargins.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QMargins {
    pub left: i32,
    pub top: i32,
    pub right: i32,
    pub bottom: i32,
}

/// Bindings for [`QImage::Format`][class] enum class.
///
/// [class]: https://doc.qt.io/qt-5/qimage.html#Format-enum
#[repr(C)]
#[derive(Clone, Copy, PartialEq, Debug)]
#[allow(non_camel_case_types)]
pub enum ImageFormat {
    Invalid = 0,
    Mono = 1,
    MonoLSB = 2,
    Indexed8 = 3,
    RGB32 = 4,
    ARGB32 = 5,
    ARGB32_Premultiplied = 6,
    RGB16 = 7,
    ARGB8565_Premultiplied = 8,
    RGB666 = 9,
    ARGB6666_Premultiplied = 10,
    RGB555 = 11,
    ARGB8555_Premultiplied = 12,
    RGB888 = 13,
    RGB444 = 14,
    ARGB4444_Premultiplied = 15,
    RGBX8888 = 16,
    RGBA8888 = 17,
    RGBA8888_Premultiplied = 18,
    BGR30 = 19,
    A2BGR30_Premultiplied = 20,
    RGB30 = 21,
    A2RGB30_Premultiplied = 22,
    Alpha8 = 23,
    Grayscale8 = 24,
    Grayscale16 = 28,
    RGBX64 = 25,
    RGBA64 = 26,
    RGBA64_Premultiplied = 27,
    BGR888 = 29,
}
cpp_class!(
    /// Wrapper around [`QImage`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qimage.html
    #[derive(Default, Clone, PartialEq)]
    pub unsafe struct QImage as "QImage"
);
impl QImage {
    /// Wrapper around [`QImage(const QString &fileName, const char *format = nullptr)`][ctor] constructor.
    ///
    /// [ctor]: https://doc.qt.io/qt-5/qimage.html#QImage-8
    pub fn load_from_file(filename: QString) -> Self {
        cpp!(unsafe [filename as "QString"] -> QImage as "QImage" {
            return QImage(filename);
        })
    }

    /// Wrapper around [`QImage(const QSize &, QImage::Format)`][ctor] constructor.
    ///
    /// [ctor]: https://doc.qt.io/qt-5/qimage.html#QImage-1
    pub fn new(size: QSize, format: ImageFormat) -> Self {
        cpp!(unsafe [size as "QSize", format as "QImage::Format" ] -> QImage as "QImage" {
            return QImage(size, format);
        })
    }

    /// Wrapper around [`size()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qimage.html#size
    pub fn size(&self) -> QSize {
        cpp!(unsafe [self as "const QImage*"] -> QSize as "QSize" { return self->size(); })
    }

    /// Wrapper around [`format()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qimage.html#format
    pub fn format(&self) -> ImageFormat {
        cpp!(unsafe [self as "const QImage*"] -> ImageFormat as "QImage::Format" { return self->format(); })
    }

    /// Wrapper around [`fill(const QColor &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qimage.html#fill-1
    pub fn fill(&mut self, color: QColor) {
        cpp!(unsafe [self as "QImage*", color as "QColor"] { self->fill(color); })
    }

    /// Wrapper around [`setPixelColor(const QPoint &, const QColor &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qimage.html#setPixelColor
    pub fn set_pixel_color(&mut self, x: u32, y: u32, color: QColor) {
        cpp!(unsafe [self as "QImage*", x as "int", y as "int", color as "QColor"] {
            self->setPixelColor(x, y, color);
        })
    }

    /// Wrapper around [`pixelColor(const QPoint &)`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qimage.html#pixelColor
    pub fn get_pixel_color(&self, x: u32, y: u32) -> QColor {
        cpp!(unsafe [self as "const QImage*", x as "int", y as "int"] -> QColor as "QColor" {
            return self->pixelColor(x, y);
        })
    }
}

cpp_class!(
    /// Wrapper around [`QPixmap`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qpixmap.html
    pub unsafe struct QPixmap as "QPixmap"
);

impl QPixmap {
    /// Wrapper around [`size()`][method] method.
    ///
    /// [method]: https://doc.qt.io/qt-5/qpixmap.html#size
    pub fn size(&self) -> QSize {
        cpp!(unsafe [self as "const QPixmap*"] -> QSize as "QSize" { return self->size(); })
    }
}

impl From<QPixmap> for QImage {
    fn from(pixmap: QPixmap) -> Self {
        cpp!(unsafe [pixmap as "QPixmap"] -> QImage as "QImage" { return pixmap.toImage(); })
    }
}

impl From<QImage> for QPixmap {
    fn from(image: QImage) -> Self {
        cpp!(unsafe [image as "QImage"] -> QPixmap as "QPixmap" { return QPixmap::fromImage(image); })
    }
}

/// Bindings for [`Qt::PenStyle`][enum] enum.
///
/// [enum]: https://doc.qt.io/qt-5/qt.html#PenStyle-enum
#[repr(C)]
#[derive(Clone, Copy, PartialEq, Debug)]
#[allow(non_camel_case_types)]
pub enum PenStyle {
    NoPen = 0,
    SolidLine = 1,
    DashLine = 2,
    DotLine = 3,
    DashDotLine = 4,
    DashDotDotLine = 5,
    CustomDashLine = 6,
}
cpp_class!(
    /// Wrapper around [`QPen`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qpen.html
    #[derive(Default)]
    pub unsafe struct QPen as "QPen"
);

impl QPen {
    pub fn from_color(color: QColor) -> Self {
        cpp!(unsafe [color as "QColor"] -> QPen as "QPen" { return QPen(color); })
    }
    pub fn from_style(style: PenStyle) -> Self {
        cpp!(unsafe [style as "Qt::PenStyle"] -> QPen as "QPen" { return QPen(style); })
    }
    pub fn set_color(&mut self, color: QColor) {
        cpp!(unsafe [self as "QPen*", color as "QColor"] { return self->setColor(color); });
    }
    pub fn set_style(&mut self, style: PenStyle) {
        cpp!(unsafe [self as "QPen*", style as "Qt::PenStyle"] { return self->setStyle(style); });
    }
    pub fn set_width(&mut self, width: i32) {
        cpp!(unsafe [self as "QPen*", width as "int"] { return self->setWidth(width); });
    }
    pub fn set_width_f(&mut self, width: qreal) {
        cpp!(unsafe [self as "QPen*", width as "qreal"] { return self->setWidthF(width); });
    }

    //    QBrush	brush() const
    //    Qt::PenCapStyle	capStyle() const
    //    QColor	color() const
    //    qreal	dashOffset() const
    //    QVector<qreal>	dashPattern() const
    //    bool	isCosmetic() const
    //    bool	isSolid() const
    //    Qt::PenJoinStyle	joinStyle() const
    //    qreal	miterLimit() const
    //    void	setBrush(const QBrush &brush)
    //    void	setCapStyle(Qt::PenCapStyle style)
    //    void	setCosmetic(bool cosmetic)
    //    void	setDashOffset(qreal offset)
    //    void	setDashPattern(const QVector<qreal> &pattern)
    //    void	setJoinStyle(Qt::PenJoinStyle style)
    //    void	setMiterLimit(qreal limit)
    //    Qt::PenStyle	style() const
    //    void	swap(QPen &other)
    //    int	width() const
    //    qreal	widthF() const
}

/// Bindings for [`QStandardPaths::StandardLocation`][enum] enum.
///
/// [enum]: https://doc.qt.io/qt-5/qstandardpaths.html#StandardLocation-enum
#[repr(C)]
#[derive(Clone, Copy, PartialEq, Debug)]
#[allow(non_camel_case_types)]
pub enum QStandardPathLocation {
    DesktopLocation = 0,
    DocumentsLocation = 1,
    FontsLocation = 2,
    ApplicationsLocation = 3,
    MusicLocation = 4,
    MoviesLocation = 5,
    PicturesLocation = 6,
    TempLocation = 7,
    HomeLocation = 8,
    AppLocalDataLocation = 9,
    CacheLocation = 10,
    GenericDataLocation = 11,
    RuntimeLocation = 12,
    ConfigLocation = 13,
    DownloadLocation = 14,
    GenericCacheLocation = 15,
    GenericConfigLocation = 16,
    AppDataLocation = 17,
    AppConfigLocation = 18,
}

/// Bindings for [`Qt::BrushStyle`][enum] enum.
///
/// [enum]: https://doc.qt.io/qt-5/qt.html#BrushStyle-enum
#[repr(C)]
#[derive(Clone, Copy, PartialEq, Debug)]
#[allow(non_camel_case_types)]
pub enum BrushStyle {
    NoBrush = 0,
    SolidPattern = 1,
    Dense1Pattern = 2,
    Dense2Pattern = 3,
    Dense3Pattern = 4,
    Dense4Pattern = 5,
    Dense5Pattern = 6,
    Dense6Pattern = 7,
    Dense7Pattern = 8,
    HorPattern = 9,
    VerPattern = 10,
    CrossPattern = 11,
    BDiagPattern = 12,
    FDiagPattern = 13,
    DiagCrossPattern = 14,
    LinearGradientPattern = 15,
    ConicalGradientPattern = 17,
    RadialGradientPattern = 16,
    TexturePattern = 24,
}
cpp_class!(
    /// Wrapper around [`QBrush`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qbrush.html
    #[derive(Default)]
    pub unsafe struct QBrush as "QBrush "
);
impl QBrush {
    pub fn from_color(color: QColor) -> Self {
        cpp!(unsafe [color as "QColor"] -> QBrush as "QBrush" { return QBrush(color); })
    }
    pub fn from_style(style: BrushStyle) -> Self {
        cpp!(unsafe [style as "Qt::BrushStyle"] -> QBrush as "QBrush" { return QBrush(style); })
    }
    pub fn set_color(&mut self, color: QColor) {
        cpp!(unsafe [self as "QBrush*", color as "QColor"] { return self->setColor(color); });
    }
    pub fn set_style(&mut self, style: BrushStyle) {
        cpp!(unsafe [self as "QBrush*", style as "Qt::BrushStyle"] { return self->setStyle(style); });
    }
}

/// Bindings for [`QLineF`][class] class.
///
/// [class]: https://doc.qt.io/qt-5/qlinef.html
#[repr(C)]
#[derive(Default, Clone, Copy, PartialEq, Debug)]
pub struct QLineF {
    pub pt1: QPointF,
    pub pt2: QPointF,
}

cpp_class!(
    /// Wrapper around [`QPainter`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qpainter.html
    pub unsafe struct QPainter as "QPainter "
);
impl QPainter {
    pub fn draw_arc(&mut self, rectangle: QRectF, start_angle: i32, span_angle: i32) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", start_angle as "int", span_angle as "int"] {
            self->drawArc(rectangle, start_angle, span_angle);
        });
    }
    pub fn draw_chord(&mut self, rectangle: QRectF, start_angle: i32, span_angle: i32) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", start_angle as "int", span_angle as "int"] {
            self->drawChord(rectangle, start_angle, span_angle);
        });
    }

    pub fn draw_convex_polygon(&mut self, points: &[QPointF]) {
        let points_ptr = points.as_ptr();
        let points_count = points.len() as u64;
        cpp!(unsafe [self as "QPainter *", points_ptr as "QPointF*", points_count as "uint64_t"] {
            self->drawConvexPolygon(points_ptr, points_count);
        });
    }

    pub fn draw_ellipse(&mut self, rectangle: QRectF) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF"] {
            self->drawEllipse(rectangle);
        });
    }
    pub fn draw_ellipse_with_center(&mut self, center: QPointF, rx: qreal, ry: qreal) {
        cpp!(unsafe [self as "QPainter *", center as "QPointF", rx as "qreal", ry as "qreal"] {
            self->drawEllipse(center, rx, ry);
        });
    }

    pub fn draw_image_fit_rect(&mut self, rectangle: QRectF, image: QImage) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", image as "QImage"] {
            self->drawImage(rectangle, image);
        });
    }
    pub fn draw_image_at_point(&mut self, point: QPointF, image: QImage) {
        cpp!(unsafe [self as "QPainter *", point as "QPointF", image as "QImage"] {
            self->drawImage(point, image);
        });
    }
    pub fn draw_image_fit_rect_with_source(
        &mut self,
        rectangle: QRectF,
        image: QImage,
        source_rect: QRectF,
    ) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", image as "QImage", source_rect as "QRectF"] {
            self->drawImage(rectangle, image, source_rect);
        });
    }
    pub fn draw_image_at_point_with_source(
        &mut self,
        point: QPointF,
        image: QImage,
        source_rect: QRectF,
    ) {
        cpp!(unsafe [self as "QPainter *", point as "QPointF", image as "QImage", source_rect as "QRectF"] {
            self->drawImage(point, image, source_rect);
        });
    }

    pub fn draw_line(&mut self, line: QLineF) {
        cpp!(unsafe [self as "QPainter *", line as "QLineF"] {
            self->drawLine(line);
        });
    }
    pub fn draw_lines(&mut self, lines: &[QLineF]) {
        let lines_ptr = lines.as_ptr();
        let lines_count = lines.len() as u64;
        cpp!(unsafe [self as "QPainter *", lines_ptr as "QLineF*", lines_count as "uint64_t"] {
            self->drawLines(lines_ptr, lines_count);
        });
    }
    pub fn draw_lines_from_points(&mut self, point_pairs: &[QPointF]) {
        let point_pairs_ptr = point_pairs.as_ptr();
        let point_pairs_count = point_pairs.len() as u64;
        cpp!(unsafe [self as "QPainter *", point_pairs_ptr as "QLineF*", point_pairs_count as "uint64_t"] {
            self->drawLines(point_pairs_ptr, point_pairs_count);
        });
    }

    pub fn draw_pie(&mut self, rectangle: QRectF, start_angle: i32, span_angle: i32) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", start_angle as "int", span_angle as "int"] {
            self->drawPie(rectangle, start_angle, span_angle);
        });
    }

    pub fn draw_point(&mut self, point: QPointF) {
        cpp!(unsafe [self as "QPainter *", point as "QPointF"] {
            self->drawPoint(point);
        });
    }
    pub fn draw_points(&mut self, points: &[QPointF]) {
        let points_ptr = points.as_ptr();
        let points_count = points.len() as u64;
        cpp!(unsafe [self as "QPainter *", points_ptr as "QPointF*", points_count as "uint64_t"] {
            self->drawPoints(points_ptr, points_count);
        });
    }

    pub fn draw_polygon(&mut self, points: &[QPointF]) {
        let points_ptr = points.as_ptr();
        let points_count = points.len() as u64;
        cpp!(unsafe [self as "QPainter *", points_ptr as "QPointF*", points_count as "uint64_t"] {
            self->drawPolygon(points_ptr, points_count);
        });
    }
    pub fn draw_polyline(&mut self, points: &[QPointF]) {
        let points_ptr = points.as_ptr();
        let points_count = points.len() as u64;
        cpp!(unsafe [self as "QPainter *", points_ptr as "QPointF*", points_count as "uint64_t"] {
            self->drawPolyline(points_ptr, points_count);
        });
    }

    pub fn draw_rect(&mut self, rectangle: QRectF) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF"] {
            self->drawRect(rectangle);
        });
    }
    pub fn draw_rects(&mut self, rects: &[QRectF]) {
        let rects_ptr = rects.as_ptr();
        let rects_count = rects.len() as u64;
        cpp!(unsafe [self as "QPainter *", rects_ptr as "QRectF*", rects_count as "uint64_t"] {
            self->drawRects(rects_ptr, rects_count);
        });
    }
    pub fn draw_rounded_rect(&mut self, rect: QRectF, x_radius: qreal, y_radius: qreal) {
        cpp!(unsafe [self as "QPainter *", rect as "QRectF", x_radius as "qreal", y_radius as "qreal"] {
            self->drawRoundedRect(rect, x_radius, y_radius);
        });
    }

    pub fn draw_text(&mut self, position: QPointF, text: QString) {
        cpp!(unsafe [self as "QPainter *", position as "QPointF", text as "QString"] {
            self->drawText(position, text);
        });
    }
    pub fn draw_text_in_rect(&mut self, rectangle: QRectF, flags: u32, text: QString) -> QRectF {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", flags as "uint32_t", text as "QString"] -> QRectF as "QRectF" {
            QRectF boundingRect;
            self->drawText(rectangle, flags, text, &boundingRect);
            return boundingRect;
        })
    }

    pub fn erase_rect(&mut self, rectangle: QRectF) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF"] {
            self->eraseRect(rectangle);
        });
    }

    pub fn fill_rect(&mut self, rectangle: QRectF, brush: QBrush) {
        cpp!(unsafe [self as "QPainter *", rectangle as "QRectF", brush as "QBrush"] {
            self->fillRect(rectangle, brush);
        });
    }

    pub fn reset_transform(&mut self) {
        cpp!(unsafe [self as "QPainter *"] {
            self->resetTransform();
        });
    }

    pub fn restore(&mut self) {
        cpp!(unsafe [self as "QPainter *"] {
            self->restore();
        });
    }

    pub fn rotate(&mut self, angle: qreal) {
        cpp!(unsafe [self as "QPainter *", angle as "qreal"] {
            self->rotate(angle);
        });
    }

    pub fn save(&mut self) {
        cpp!(unsafe [self as "QPainter *"] {
            self->save();
        });
    }

    pub fn scale(&mut self, sx: qreal, sy: qreal) {
        cpp!(unsafe [self as "QPainter *", sx as "qreal", sy as "qreal"] {
            self->scale(sx, sy);
        });
    }

    pub fn set_background(&mut self, brush: QBrush) {
        cpp!(unsafe [self as "QPainter *", brush as "QBrush"] {
            self->setBackground(brush);
        });
    }

    pub fn set_brush(&mut self, brush: QBrush) {
        cpp!(unsafe [self as "QPainter *", brush as "QBrush"] {
            self->setBrush(brush);
        });
    }

    pub fn set_opacity(&mut self, opacity: qreal) {
        cpp!(unsafe [self as "QPainter *", opacity as "qreal"] {
            self->setOpacity(opacity);
        });
    }

    pub fn set_pen(&mut self, pen: QPen) {
        cpp!(unsafe [self as "QPainter *", pen as "QPen"] {
            self->setPen(pen);
        });
    }

    pub fn translate(&mut self, offset: QPointF) {
        cpp!(unsafe [self as "QPainter *", offset as "QPointF"] {
            self->translate(offset);
        });
    }
    pub fn set_render_hint(&mut self, hint: QPainterRenderHint, on: bool) {
        cpp!(unsafe [self as "QPainter *", hint as "QPainter::RenderHint", on as "bool"] {
            self->setRenderHint(hint, on);
        });
    }

    // void	setBackgroundMode(Qt::BGMode mode)
    // void	setCompositionMode(QPainter::CompositionMode mode)
    // void	setFont(const QFont &font)
}

/// Bindings for [`QPainter::RenderHint`][enum] enum.
///
/// [enum]: https://doc.qt.io/qt-5/qpainter.html#RenderHint-enum
#[repr(C)]
#[derive(Clone, Copy, PartialEq, Debug)]
#[allow(non_camel_case_types)]
pub enum QPainterRenderHint {
    Antialiasing = 0x01,
    TextAntialiasing = 0x02,
    SmoothPixmapTransform = 0x04,
    HighQualityAntialiasing = 0x08,
    NonCosmeticDefaultPen = 0x10,
    Qt4CompatiblePainting = 0x20,
    LosslessImageRendering = 0x40,
}

cpp! {{
    #include <QtCore/QJsonDocument>
    #include <QtCore/QJsonValue>
    #include <QtCore/QJsonObject>
    #include <QtCore/QJsonArray>
}}
cpp_class!(
    /// Wrapper around [`QJsonValue`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qjsonvalue.html
    #[derive(Default, PartialEq, Eq, Clone)]
    pub unsafe struct QJsonValue as "QJsonValue"
);

impl Into<QVariant> for QJsonValue {
    fn into(self) -> QVariant {
        cpp!(unsafe [self as "QJsonValue"] -> QVariant as "QVariant" { return self.toVariant(); })
    }
}
impl From<QVariant> for QJsonValue {
    fn from(v: QVariant) -> QJsonValue {
        cpp!(unsafe [v as "QVariant"] -> QJsonValue as "QJsonValue" { return QJsonValue::fromVariant(v); })
    }
}

impl Into<QJsonObject> for QJsonValue {
    fn into(self) -> QJsonObject {
        cpp!(unsafe [self as "QJsonValue"] -> QJsonObject as "QJsonObject" { return self.toObject(); })
    }
}
impl From<QJsonObject> for QJsonValue {
    fn from(v: QJsonObject) -> QJsonValue {
        cpp!(unsafe [v as "QJsonObject"] -> QJsonValue as "QJsonValue" { return QJsonValue(v); })
    }
}
impl Into<QJsonArray> for QJsonValue {
    fn into(self) -> QJsonArray {
        cpp!(unsafe [self as "QJsonValue"] -> QJsonArray as "QJsonArray" { return self.toArray(); })
    }
}
impl From<QJsonArray> for QJsonValue {
    fn from(v: QJsonArray) -> QJsonValue {
        cpp!(unsafe [v as "QJsonArray"] -> QJsonValue as "QJsonValue" { return QJsonValue(v); })
    }
}

impl Into<QString> for QJsonValue {
    fn into(self) -> QString {
        cpp!(unsafe [self as "QJsonValue"] -> QString as "QString" { return self.toString(); })
    }
}
impl From<QString> for QJsonValue {
    fn from(v: QString) -> QJsonValue {
        cpp!(unsafe [v as "QString"] -> QJsonValue as "QJsonValue" { return QJsonValue(v); })
    }
}

impl Into<bool> for QJsonValue {
    fn into(self) -> bool {
        cpp!(unsafe [self as "QJsonValue"] -> bool as "bool" { return self.toBool(); })
    }
}
impl From<bool> for QJsonValue {
    fn from(v: bool) -> QJsonValue {
        cpp!(unsafe [v as "bool"] -> QJsonValue as "QJsonValue" { return QJsonValue(v); })
    }
}

impl Into<f64> for QJsonValue {
    fn into(self) -> f64 {
        cpp!(unsafe [self as "QJsonValue"] -> f64 as "double" { return self.toDouble(); })
    }
}
impl From<f64> for QJsonValue {
    fn from(v: f64) -> QJsonValue {
        cpp!(unsafe [v as "double"] -> QJsonValue as "QJsonValue" { return QJsonValue(v); })
    }
}

#[test]
fn test_qjsonvalue() {
    let test_str = QJsonValue::from(QVariant::from(QString::from("test")));
    let test_str2 = QJsonValue::from(QString::from("test"));
    assert!(test_str == test_str2);
    assert_eq!(<QJsonValue as Into<QString>>::into(test_str), QString::from("test"));

    let test_bool = QJsonValue::from(true);
    let test_bool_variant: QVariant = QJsonValue::from(true).into();
    let test_bool_variant2 = QVariant::from(true);
    assert!(test_bool_variant == test_bool_variant2);
    assert_eq!(<QJsonValue as Into<bool>>::into(test_bool), true);

    let test_f64 = QJsonValue::from(1.2345);
    let test_f64_variant: QVariant = QJsonValue::from(1.2345).into();
    let test_f64_variant2 = QVariant::from(1.2345);
    assert!(test_f64_variant == test_f64_variant2);
    assert_eq!(<QJsonValue as Into<f64>>::into(test_f64), 1.2345);

    let values = QJsonArray::from(vec![
        QJsonValue::from(QString::from("test")),
        QJsonValue::from(true),
        QJsonValue::from(false),
        QJsonValue::from(1.2345),
        QJsonValue::from(456.0),
    ]);

    assert_eq!(values.to_json().to_string(), "[\"test\",true,false,1.2345,456]");
}

cpp_class!(
    /// Wrapper around [`QJsonObject`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qjsonobject.html
    #[derive(Default, PartialEq, Eq, Clone)]
    pub unsafe struct QJsonObject as "QJsonObject"
);

impl QJsonObject {
    pub fn to_json(&self) -> QByteArray {
        cpp!(unsafe [self as "QJsonObject*"] -> QByteArray as "QByteArray" { return QJsonDocument(*self).toJson(QJsonDocument::Compact); })
    }
    pub fn to_json_pretty(&self) -> QByteArray {
        cpp!(unsafe [self as "QJsonObject*"] -> QByteArray as "QByteArray" { return QJsonDocument(*self).toJson(QJsonDocument::Indented); })
    }
    pub fn insert(&mut self, key: &str, value: QJsonValue) {
        let len = key.len();
        let ptr = key.as_ptr();
        cpp!(unsafe [self as "QJsonObject*", len as "size_t", ptr as "char*", value as "QJsonValue"] { self->insert(QString::fromUtf8(ptr, len), std::move(value)); })
    }
    pub fn value(&self, key: &str) -> QJsonValue {
        let len = key.len();
        let ptr = key.as_ptr();
        cpp!(unsafe [self as "QJsonObject*", len as "size_t", ptr as "char*"] -> QJsonValue as "QJsonValue" { return self->value(QString::fromUtf8(ptr, len)); })
    }
    pub fn take(&mut self, key: &str) -> QJsonValue {
        let len = key.len();
        let ptr = key.as_ptr();
        cpp!(unsafe [self as "QJsonObject*", len as "size_t", ptr as "char*"] -> QJsonValue as "QJsonValue" { return self->take(QString::fromUtf8(ptr, len)); })
    }
    pub fn remove(&mut self, key: &str) {
        let len = key.len();
        let ptr = key.as_ptr();
        cpp!(unsafe [self as "QJsonObject*", len as "size_t", ptr as "char*"] { return self->remove(QString::fromUtf8(ptr, len)); })
    }
    pub fn len(&self) -> usize {
        cpp!(unsafe [self as "QJsonObject*"] -> usize as "size_t" { return self->size(); })
    }
    pub fn is_empty(&self) -> bool {
        cpp!(unsafe [self as "QJsonObject*"] -> bool as "bool" { return self->isEmpty(); })
    }
    pub fn contains(&self, key: &str) -> bool {
        let len = key.len();
        let ptr = key.as_ptr();
        cpp!(unsafe [self as "QJsonObject*", len as "size_t", ptr as "char*"] -> bool as "bool" { return self->contains(QString::fromUtf8(ptr, len)); })
    }
    pub fn keys(&self) -> Vec<String> {
        let len = self.len();
        let mut vec = Vec::with_capacity(len);

        let keys = cpp!(unsafe [self as "QJsonObject*"] -> QStringList as "QStringList" { return self->keys(); });

        for i in 0..len {
            vec.push(keys[i].to_string());
        }
        vec
    }
}

impl From<HashMap<String, String>> for QJsonObject {
    fn from(v: HashMap<String, String>) -> QJsonObject {
        let keys: Vec<QString> = v.keys().cloned().map(QString::from).collect();
        let values: Vec<QString> = v.values().cloned().map(QString::from).collect();
        let keys_ptr = keys.as_ptr();
        let values_ptr = values.as_ptr();
        let len = keys.len();
        cpp!(unsafe [keys_ptr as "const QString*", values_ptr as "const QString*", len as "size_t"] -> QJsonObject as "QJsonObject" {
            QJsonObject obj;
            for (size_t i = 0; i < len; ++i) {
                obj.insert(keys_ptr[i], values_ptr[i]);
            }
            return obj;
        })
    }
}
impl From<HashMap<String, QJsonValue>> for QJsonObject {
    fn from(v: HashMap<String, QJsonValue>) -> QJsonObject {
        let keys: Vec<QString> = v.keys().cloned().map(QString::from).collect();
        let values: Vec<QJsonValue> = v.values().cloned().collect();
        let keys_ptr = keys.as_ptr();
        let values_ptr = values.as_ptr();
        let len = keys.len();
        cpp!(unsafe [keys_ptr as "const QString*", values_ptr as "const QJsonValue*", len as "size_t"] -> QJsonObject as "QJsonObject" {
            QJsonObject obj;
            for (size_t i = 0; i < len; ++i) {
                obj.insert(keys_ptr[i], values_ptr[i]);
            }
            return obj;
        })
    }
}

cpp! {{ #include <QtCore/QDebug> }}

#[test]
fn test_qjsonobject() {
    let mut hashmap = HashMap::new();
    hashmap.insert("key".to_owned(), "value".to_owned());
    hashmap.insert("test".to_owned(), "hello".to_owned());
    let object = QJsonObject::from(hashmap);
    assert_eq!(object.to_json().to_string(), "{\"key\":\"value\",\"test\":\"hello\"}");

    let array = QJsonArray::from(vec![
        QJsonValue::from(QString::from("test")),
        QJsonValue::from(true),
        QJsonValue::from(false),
        QJsonValue::from(1.2345),
        QJsonValue::from(456.0),
    ]);

    let mut valuemap = HashMap::new();
    valuemap.insert("1_string".to_owned(), QJsonValue::from(QString::from("test")));
    valuemap.insert("2_bool".to_owned(), QJsonValue::from(true));
    valuemap.insert("3_f64".to_owned(), QJsonValue::from(1.2345));
    valuemap.insert("4_int".to_owned(), QJsonValue::from(456.0));
    valuemap.insert("5_array".to_owned(), QJsonValue::from(array));
    valuemap.insert("6_object".to_owned(), QJsonValue::from(object));
    let object = QJsonObject::from(valuemap);
    assert_eq!(object.to_json().to_string(), "{\"1_string\":\"test\",\"2_bool\":true,\"3_f64\":1.2345,\"4_int\":456,\"5_array\":[\"test\",true,false,1.2345,456],\"6_object\":{\"key\":\"value\",\"test\":\"hello\"}}");

    let at_f64: f64 = object.value("3_f64").into();
    assert_eq!(at_f64, 1.2345);

    let at_string = object.value("1_string");
    assert_eq!(<QJsonValue as Into<QString>>::into(at_string).to_string(), "test");

    let mut object = QJsonObject::default();
    object.insert("key", QJsonValue::from(QString::from("value")));
    object.insert("test", QJsonValue::from(QString::from("hello")));
    assert_eq!(object.to_json().to_string(), "{\"key\":\"value\",\"test\":\"hello\"}");

    assert_eq!(object.keys(), vec!["key".to_owned(), "test".to_owned()]);
}

#[test]
fn test_qjsonobject_utf8() {
    let emoji = String::from("🦀");
    let expected = String::from("{\"🦀\":1}");

    let mut qmap: QJsonObject = QJsonObject::default();
    qmap.insert(&emoji, QVariant::from(1).into());

    let actual = qmap.to_json();
    let actual = actual.to_str().unwrap();

    assert_eq!(actual, expected);
}

cpp_class!(
    /// Wrapper around [`QJsonArray`][class] class.
    ///
    /// [class]: https://doc.qt.io/qt-5/qjsonarray.html
    #[derive(Default, PartialEq, Eq, Clone)]
    pub unsafe struct QJsonArray as "QJsonArray"
);

impl QJsonArray {
    pub fn to_json(&self) -> QByteArray {
        cpp!(unsafe [self as "QJsonArray*"] -> QByteArray as "QByteArray" { return QJsonDocument(*self).toJson(QJsonDocument::Compact); })
    }
    pub fn to_json_pretty(&self) -> QByteArray {
        cpp!(unsafe [self as "QJsonArray*"] -> QByteArray as "QByteArray" { return QJsonDocument(*self).toJson(QJsonDocument::Indented); })
    }
    pub fn push(&mut self, value: QJsonValue) {
        cpp!(unsafe [self as "QJsonArray*", value as "QJsonValue"] { self->append(std::move(value)); })
    }
    pub fn insert(&mut self, index: usize, element: QJsonValue) {
        cpp!(unsafe [self as "QJsonArray*", index as "size_t", element as "QJsonValue"] { self->insert(index, std::move(element)); })
    }
    pub fn at(&self, index: usize) -> QJsonValue {
        cpp!(unsafe [self as "QJsonArray*", index as "size_t"] -> QJsonValue as "QJsonValue" { return self->at(index); })
    }
    pub fn take_at(&mut self, index: usize) -> QJsonValue {
        cpp!(unsafe [self as "QJsonArray*", index as "size_t"] -> QJsonValue as "QJsonValue" { return self->takeAt(index); })
    }
    pub fn remove_at(&mut self, index: usize) {
        cpp!(unsafe [self as "QJsonArray*", index as "size_t"] { return self->removeAt(index); })
    }
    pub fn len(&self) -> usize {
        cpp!(unsafe [self as "QJsonArray*"] -> usize as "size_t" { return self->size(); })
    }
    pub fn is_empty(&self) -> bool {
        cpp!(unsafe [self as "QJsonArray*"] -> bool as "bool" { return self->isEmpty(); })
    }
}

impl From<Vec<QJsonValue>> for QJsonArray {
    fn from(v: Vec<QJsonValue>) -> QJsonArray {
        let ptr = v.as_ptr();
        let len = v.len();
        cpp!(unsafe [ptr as "const QJsonValue*", len as "size_t"] -> QJsonArray as "QJsonArray" {
            QJsonArray arr;
            for (size_t i = 0; i < len; ++i) {
                arr.append(ptr[i]);
            }
            return arr;
        })
    }
}

#[test]
fn test_qjsonarray() {
    let mut array = QJsonArray::default();
    array.push(QJsonValue::from(QString::from("test")));
    array.push(QJsonValue::from(true));
    array.push(QJsonValue::from(false));
    array.push(QJsonValue::from(1.2345));
    assert_eq!(array.to_json().to_string(), "[\"test\",true,false,1.2345]");

    let mut vec = Vec::new();
    vec.push(QJsonValue::from(QString::from("test")));
    vec.push(QJsonValue::from(true));
    vec.push(QJsonValue::from(false));
    vec.push(QJsonValue::from(1.2345));
    assert!(QJsonArray::from(vec) == array);

    assert_eq!(array.len(), 4);

    assert_eq!(<QJsonValue as Into<QString>>::into(array.at(0)).to_string(), "test");
    assert!(array.at(3) == QJsonValue::from(1.2345));
}