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5d180d1f99
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED) Since all of these checks are done in release builds as well, let's rename them to VERIFY to prevent confusion, as everyone is used to assertions being compiled out in release. We can introduce a new ASSERT macro that is specifically for debug checks, but I'm doing this wholesale conversion first since we've accumulated thousands of these already, and it's not immediately obvious which ones are suitable for ASSERT.
292 lines
7.5 KiB
C++
292 lines
7.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/String.h>
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#include <LibGUI/Icon.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Font.h>
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namespace GUI {
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class Variant {
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public:
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Variant();
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Variant(bool);
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Variant(float);
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Variant(i32);
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Variant(i64);
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Variant(unsigned);
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Variant(const char*);
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Variant(const String&);
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Variant(const FlyString&);
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Variant(const Gfx::Bitmap&);
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Variant(const GUI::Icon&);
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Variant(const Gfx::IntPoint&);
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Variant(const Gfx::IntSize&);
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Variant(const Gfx::IntRect&);
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Variant(const Gfx::Font&);
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Variant(const Gfx::TextAlignment);
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Variant(const AK::JsonValue&);
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Variant(Color);
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Variant(const Variant&);
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Variant& operator=(const Variant&);
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Variant(Variant&&) = delete;
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Variant& operator=(Variant&&);
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void clear();
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~Variant();
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enum class Type {
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Invalid,
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Bool,
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Int32,
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Int64,
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UnsignedInt,
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Float,
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String,
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Bitmap,
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Color,
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Icon,
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Point,
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Size,
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Rect,
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Font,
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TextAlignment,
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};
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bool is_valid() const { return m_type != Type::Invalid; }
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bool is_bool() const { return m_type == Type::Bool; }
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bool is_i32() const { return m_type == Type::Int32; }
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bool is_i64() const { return m_type == Type::Int64; }
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bool is_uint() const { return m_type == Type::UnsignedInt; }
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bool is_float() const { return m_type == Type::Float; }
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bool is_string() const { return m_type == Type::String; }
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bool is_bitmap() const { return m_type == Type::Bitmap; }
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bool is_color() const { return m_type == Type::Color; }
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bool is_icon() const { return m_type == Type::Icon; }
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bool is_point() const { return m_type == Type::Point; }
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bool is_size() const { return m_type == Type::Size; }
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bool is_rect() const { return m_type == Type::Rect; }
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bool is_font() const { return m_type == Type::Font; }
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bool is_text_alignment() const { return m_type == Type::TextAlignment; }
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Type type() const { return m_type; }
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bool as_bool() const
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{
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VERIFY(type() == Type::Bool);
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return m_value.as_bool;
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}
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bool to_bool() const
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{
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if (type() == Type::Bool)
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return as_bool();
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if (type() == Type::String)
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return !!m_value.as_string;
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if (type() == Type::Int32)
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return m_value.as_i32 != 0;
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if (type() == Type::Int64)
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return m_value.as_i64 != 0;
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if (type() == Type::UnsignedInt)
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return m_value.as_uint != 0;
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if (type() == Type::Rect)
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return !as_rect().is_null();
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if (type() == Type::Size)
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return !as_size().is_null();
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if (type() == Type::Point)
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return !as_point().is_null();
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return is_valid();
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}
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int as_i32() const
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{
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VERIFY(type() == Type::Int32);
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return m_value.as_i32;
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}
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int as_i64() const
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{
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VERIFY(type() == Type::Int64);
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return m_value.as_i64;
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}
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unsigned as_uint() const
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{
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VERIFY(type() == Type::UnsignedInt);
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return m_value.as_uint;
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}
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template<typename T>
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T to_integer() const
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{
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if (is_i32())
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return as_i32();
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if (is_i64())
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return as_i64();
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if (is_bool())
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return as_bool() ? 1 : 0;
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if (is_float())
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return (int)as_float();
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if (is_uint()) {
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VERIFY(as_uint() <= INT32_MAX);
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return (int)as_uint();
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}
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if (is_string())
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return as_string().to_int().value_or(0);
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return 0;
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}
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i32 to_i32() const
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{
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return to_integer<i32>();
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}
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i64 to_i64() const
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{
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return to_integer<i64>();
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}
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float as_float() const
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{
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VERIFY(type() == Type::Float);
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return m_value.as_float;
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}
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Gfx::IntPoint as_point() const
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{
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return { m_value.as_point.x, m_value.as_point.y };
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}
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Gfx::IntSize as_size() const
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{
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return { m_value.as_size.width, m_value.as_size.height };
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}
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Gfx::IntRect as_rect() const
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{
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return { as_point(), as_size() };
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}
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String as_string() const
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{
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VERIFY(type() == Type::String);
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return m_value.as_string;
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}
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const Gfx::Bitmap& as_bitmap() const
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{
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VERIFY(type() == Type::Bitmap);
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return *m_value.as_bitmap;
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}
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GUI::Icon as_icon() const
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{
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VERIFY(type() == Type::Icon);
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return GUI::Icon(*m_value.as_icon);
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}
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Color as_color() const
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{
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VERIFY(type() == Type::Color);
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return Color::from_rgba(m_value.as_color);
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}
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const Gfx::Font& as_font() const
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{
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VERIFY(type() == Type::Font);
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return *m_value.as_font;
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}
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Gfx::TextAlignment to_text_alignment(Gfx::TextAlignment default_value) const
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{
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if (type() != Type::TextAlignment)
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return default_value;
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return m_value.as_text_alignment;
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}
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Color to_color(Color default_value = {}) const
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{
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if (type() == Type::Color)
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return as_color();
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if (type() == Type::String) {
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auto color = Color::from_string(as_string());
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if (color.has_value())
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return color.value();
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}
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return default_value;
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}
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String to_string() const;
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bool operator==(const Variant&) const;
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bool operator<(const Variant&) const;
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private:
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void copy_from(const Variant&);
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void move_from(Variant&&);
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struct RawPoint {
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int x;
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int y;
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};
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struct RawSize {
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int width;
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int height;
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};
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struct RawRect {
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RawPoint location;
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RawSize size;
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};
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union {
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StringImpl* as_string;
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Gfx::Bitmap* as_bitmap;
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GUI::IconImpl* as_icon;
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Gfx::Font* as_font;
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bool as_bool;
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i32 as_i32;
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i64 as_i64;
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unsigned as_uint;
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float as_float;
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Gfx::RGBA32 as_color;
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Gfx::TextAlignment as_text_alignment;
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RawPoint as_point;
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RawSize as_size;
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RawRect as_rect;
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} m_value;
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Type m_type { Type::Invalid };
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};
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const char* to_string(Variant::Type);
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}
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