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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Filiph Sandström <filiph.sandstrom@filfatstudios.com>
* Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Concepts.h>
#include <AK/DeprecatedString.h>
#include <LibGUI/Icon.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Font/Font.h>
#include <LibGfx/SystemTheme.h>
namespace GUI {
namespace Detail {
struct Boolean {
bool value;
};
using VariantUnderlyingType = AK::Variant<Empty, Boolean, float, i32, i64, u32, u64, DeprecatedString, Color, Gfx::IntPoint, Gfx::IntSize, Gfx::IntRect, Gfx::TextAlignment, Gfx::ColorRole, Gfx::AlignmentRole, Gfx::FlagRole, Gfx::MetricRole, Gfx::PathRole, NonnullRefPtr<Gfx::Bitmap>, NonnullRefPtr<Gfx::Font>, GUI::Icon>;
}
class Variant : public Detail::VariantUnderlyingType {
public:
using Detail::VariantUnderlyingType::Variant;
using Detail::VariantUnderlyingType::operator=;
Variant(JsonValue const&);
Variant& operator=(JsonValue const&);
Variant(bool v)
: Variant(Detail::Boolean { v })
{
}
Variant& operator=(bool v)
{
set(Detail::Boolean { v });
return *this;
}
template<typename T>
Variant(T&& value)
requires(IsConstructible<DeprecatedString, T>)
: Variant(DeprecatedString(forward<T>(value)))
{
}
template<typename T>
Variant& operator=(T&& v)
requires(IsConstructible<DeprecatedString, T>)
{
set(DeprecatedString(v));
return *this;
}
template<OneOfIgnoringCV<Gfx::Bitmap, Gfx::Font> T>
Variant(T const& value)
: Variant(NonnullRefPtr<RemoveCV<T>>(value))
{
}
template<OneOfIgnoringCV<Gfx::Bitmap, Gfx::Font> T>
Variant& operator=(T&& value)
{
set(NonnullRefPtr<RemoveCV<T>>(forward<T>(value)));
return *this;
}
~Variant() = default;
bool is_valid() const { return !has<Empty>(); }
bool is_bool() const { return has<Detail::Boolean>(); }
bool is_i32() const { return has<i32>(); }
bool is_i64() const { return has<i64>(); }
bool is_u32() const { return has<u32>(); }
bool is_u64() const { return has<u64>(); }
bool is_float() const { return has<float>(); }
bool is_string() const { return has<DeprecatedString>(); }
bool is_bitmap() const { return has<NonnullRefPtr<Gfx::Bitmap>>(); }
bool is_color() const { return has<Color>(); }
bool is_icon() const { return has<GUI::Icon>(); }
bool is_point() const { return has<Gfx::IntPoint>(); }
bool is_size() const { return has<Gfx::IntSize>(); }
bool is_rect() const { return has<Gfx::IntRect>(); }
bool is_font() const { return has<NonnullRefPtr<Gfx::Font>>(); }
bool is_text_alignment() const { return has<Gfx::TextAlignment>(); }
bool is_color_role() const { return has<Gfx::ColorRole>(); }
bool is_alignment_role() const { return has<Gfx::AlignmentRole>(); }
bool is_flag_role() const { return has<Gfx::FlagRole>(); }
bool is_metric_role() const { return has<Gfx::MetricRole>(); }
bool is_path_role() const { return has<Gfx::PathRole>(); }
bool as_bool() const { return get<Detail::Boolean>().value; }
bool to_bool() const
{
return visit(
[](Empty) { return false; },
[](Detail::Boolean v) { return v.value; },
[](DeprecatedString const& v) { return !v.is_null(); },
[](Integral auto v) { return v != 0; },
[](Gfx::IntPoint const& v) { return !v.is_zero(); },
[](OneOf<Gfx::IntRect, Gfx::IntSize> auto const& v) { return !v.is_empty(); },
[](Enum auto const&) { return true; },
[](OneOf<float, DeprecatedString, Color, NonnullRefPtr<Gfx::Font>, NonnullRefPtr<Gfx::Bitmap>, GUI::Icon> auto const&) { return true; });
}
i32 as_i32() const { return get<i32>(); }
i64 as_i64() const { return get<i64>(); }
u32 as_u32() const { return get<u32>(); }
u64 as_u64() const { return get<u64>(); }
template<Integral T>
T to_integer() const
{
return visit(
[](Empty) -> T { return 0; },
[](Integral auto v) { return static_cast<T>(v); },
[](FloatingPoint auto v) { return (T)v; },
[](Detail::Boolean v) -> T { return v.value ? 1 : 0; },
[](DeprecatedString const& v) {
if constexpr (IsUnsigned<T>)
return v.to_uint<T>().value_or(0u);
else
return v.to_int<T>().value_or(0);
},
[](Enum auto const&) -> T { return 0; },
[](OneOf<Gfx::IntPoint, Gfx::IntRect, Gfx::IntSize, Color, NonnullRefPtr<Gfx::Font>, NonnullRefPtr<Gfx::Bitmap>, GUI::Icon> auto const&) -> T { return 0; });
}
i32 to_i32() const { return to_integer<i32>(); }
i64 to_i64() const { return to_integer<i64>(); }
float as_float() const { return get<float>(); }
float as_float_or(float fallback) const
{
if (auto const* p = get_pointer<float>())
return *p;
return fallback;
}
Gfx::IntPoint as_point() const { return get<Gfx::IntPoint>(); }
Gfx::IntSize as_size() const { return get<Gfx::IntSize>(); }
Gfx::IntRect as_rect() const { return get<Gfx::IntRect>(); }
DeprecatedString as_string() const { return get<DeprecatedString>(); }
Gfx::Bitmap const& as_bitmap() const { return *get<NonnullRefPtr<Gfx::Bitmap>>(); }
GUI::Icon as_icon() const { return get<GUI::Icon>(); }
Color as_color() const { return get<Color>(); }
Gfx::Font const& as_font() const { return *get<NonnullRefPtr<Gfx::Font>>(); }
Gfx::TextAlignment to_text_alignment(Gfx::TextAlignment default_value) const
{
if (auto const* p = get_pointer<Gfx::TextAlignment>())
return *p;
return default_value;
}
Gfx::ColorRole to_color_role() const
{
if (auto const* p = get_pointer<Gfx::ColorRole>())
return *p;
return Gfx::ColorRole::NoRole;
}
Gfx::AlignmentRole to_alignment_role() const
{
if (auto const* p = get_pointer<Gfx::AlignmentRole>())
return *p;
return Gfx::AlignmentRole::NoRole;
}
Gfx::FlagRole to_flag_role() const
{
if (auto const* p = get_pointer<Gfx::FlagRole>())
return *p;
return Gfx::FlagRole::NoRole;
}
Gfx::MetricRole to_metric_role() const
{
if (auto const* p = get_pointer<Gfx::MetricRole>())
return *p;
return Gfx::MetricRole::NoRole;
}
Gfx::PathRole to_path_role() const
{
if (auto const* p = get_pointer<Gfx::PathRole>())
return *p;
return Gfx::PathRole::NoRole;
}
Color to_color(Color default_value = {}) const
{
if (auto const* p = get_pointer<Color>())
return *p;
if (auto const* p = get_pointer<DeprecatedString>())
return Color::from_string(*p).value_or(default_value);
return default_value;
}
DeprecatedString to_deprecated_string() const
{
return visit(
[](Empty) -> DeprecatedString { return "[null]"; },
[](Gfx::TextAlignment v) { return DeprecatedString::formatted("Gfx::TextAlignment::{}", Gfx::to_string(v)); },
[](Gfx::ColorRole v) { return DeprecatedString::formatted("Gfx::ColorRole::{}", Gfx::to_string(v)); },
[](Gfx::AlignmentRole v) { return DeprecatedString::formatted("Gfx::AlignmentRole::{}", Gfx::to_string(v)); },
[](Gfx::FlagRole v) { return DeprecatedString::formatted("Gfx::FlagRole::{}", Gfx::to_string(v)); },
[](Gfx::MetricRole v) { return DeprecatedString::formatted("Gfx::MetricRole::{}", Gfx::to_string(v)); },
[](Gfx::PathRole v) { return DeprecatedString::formatted("Gfx::PathRole::{}", Gfx::to_string(v)); },
[](NonnullRefPtr<Gfx::Font> const& font) { return DeprecatedString::formatted("[Font: {}]", font->name()); },
[](NonnullRefPtr<Gfx::Bitmap> const&) -> DeprecatedString { return "[Gfx::Bitmap]"; },
[](GUI::Icon const&) -> DeprecatedString { return "[GUI::Icon]"; },
[](Detail::Boolean v) { return DeprecatedString::formatted("{}", v.value); },
[](auto const& v) { return DeprecatedString::formatted("{}", v); });
}
bool operator==(Variant const&) const;
bool operator<(Variant const&) const;
};
}
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