RmlUi/Source/Core/ElementMeta.h

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019-2023 The RmlUi Team, and contributors
 *
 * 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.
 *
 */

#ifndef RMLUI_CORE_ELEMENTMETA_H
#define RMLUI_CORE_ELEMENTMETA_H

#include "../../Include/RmlUi/Core/ComputedValues.h"
#include "../../Include/RmlUi/Core/Element.h"
#include "../../Include/RmlUi/Core/ElementScroll.h"
#include "../../Include/RmlUi/Core/Traits.h"
#include "../../Include/RmlUi/Core/Types.h"
#include "ControlledLifetimeResource.h"
#include "ElementBackgroundBorder.h"
#include "ElementEffects.h"
#include "ElementStyle.h"
#include "EventDispatcher.h"
#include "Layout/LayoutNode.h"
#include "Pool.h"

namespace Rml {

// Meta objects for element collected in a single struct to reduce memory allocations
struct ElementMeta {
	explicit ElementMeta(Element* el) :
		event_dispatcher(el), style(el), background_border(), effects(el), scroll(el), computed_values(el), layout_node(el)
	{}
	SmallUnorderedMap<EventId, EventListener*> attribute_event_listeners;
	EventDispatcher event_dispatcher;
	ElementStyle style;
	ElementBackgroundBorder background_border;
	ElementEffects effects;
	ElementScroll scroll;
	Style::ComputedValues computed_values;
	LayoutNode layout_node;
};

struct ElementMetaPool {
	Pool<ElementMeta> pool{50, true};

	static ControlledLifetimeResource<ElementMetaPool> element_meta_pool;
	static void Initialize();
	static void Shutdown();
};

} // namespace Rml
#endif