// Copyright (c) 2016-2018 Kiwano - Nomango
// 
// 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.

#pragma once
#include <kiwano/2d/Actor.h>
#include <kiwano/renderer/Color.h>
#include <kiwano/renderer/TextLayout.h>

namespace kiwano
{
	KGE_DECLARE_SMART_PTR(TextActor);

	/**
	* \addtogroup Actors
	* @{
	*/

	/**
	* \~chinese
	* @brief 文本角色
	*/
	class KGE_API TextActor
		: public Actor
	{
	public:
		/// \~chinese
		/// @brief 构建空的文本角色
		TextActor();

		/// \~chinese
		/// @brief 构建空的文本角色
		/// @param text 文字内容
		explicit TextActor(const String& text);

		/// \~chinese
		/// @brief 构建空的文本角色
		/// @param text 文字内容
		/// @param font 字体
		TextActor(const String& text, const Font& font);

		/// \~chinese
		/// @brief 构建空的文本角色
		/// @param text 文字内容
		/// @param style 文本样式
		TextActor(const String& text, const TextStyle& style);

		/// \~chinese
		/// @brief 构建空的文本角色
		/// @param text 文字内容
		/// @param font 字体
		/// @param style 文本样式
		TextActor(const String& text, const Font& font, const TextStyle& style);

		virtual ~TextActor();

		/// \~chinese
		/// @brief 获取文本
		String const& GetText() const;

		/// \~chinese
		/// @brief 获取字体
		Font GetFont() const;

		/// \~chinese
		/// @brief 获取文本样式
		TextStyle GetStyle() const;

		/// \~chinese
		/// @brief 获取文本布局
		TextLayout GetLayout() const;

		/// \~chinese
		/// @brief 设置文本
		void SetText(String const& text);

		/// \~chinese
		/// @brief 设置文本样式
		void SetStyle(const TextStyle& style);

		/// \~chinese
		/// @brief 设置字体
		void SetFont(const Font& font);

		/// \~chinese
		/// @brief 设置字体族
		void SetFontFamily(String const& family);

		/// \~chinese
		/// @brief 设置字号（默认值为 18）
		void SetFontSize(
			float size
		);

		/// \~chinese
		/// @brief 设置字体粗细值（默认值为 FontWeight::Normal）
		void SetFontWeight(uint32_t weight);

		/// \~chinese
		/// @brief 设置文字颜色（默认值为 Color::White）
		void SetColor(Color const& color);

		/// \~chinese
		/// @brief 设置文字斜体（默认值为 false）
		void SetItalic(bool italic);

		/// \~chinese
		/// @brief 设置文本自动换行的宽度（默认为 0）
		void SetWrapWidth(float wrap_width);

		/// \~chinese
		/// @brief 设置行间距（默认为 0）
		void SetLineSpacing(float line_spacing);

		/// \~chinese
		/// @brief 设置对齐方式（默认为 TextAlign::Left）
		void SetAlignment(TextAlign align);

		/// \~chinese
		/// @brief 设置下划线（默认值为 false）
		void SetUnderline(bool underline);

		/// \~chinese
		/// @brief 设置删除线（默认值为 false）
		void SetStrikethrough(bool strikethrough);

		/// \~chinese
		/// @brief 设置是否显示描边
		void SetOutline(bool outline);

		/// \~chinese
		/// @brief 设置描边颜色
		void SetOutlineColor(Color const& outline_color);

		/// \~chinese
		/// @brief 设置描边线宽
		void SetOutlineWidth(float outline_width);

		/// \~chinese
		/// @brief 设置描边线相交样式
		void SetOutlineStroke(StrokeStyle outline_stroke);

		/// \~chinese
		/// @brief 更新文本布局
		void UpdateLayout();

		/// \~chinese
		/// @brief 设置默认字体
		static void SetDefaultFont(Font const& font);

		/// \~chinese
		/// @brief 设置默认文字样式
		static void SetDefaultStyle(TextStyle const& style);

		void OnRender(RenderTarget* rt) override;

	private:
		bool		format_dirty_;
		bool		layout_dirty_;
		TextLayout	text_layout_;
		String		text_;
		Font		font_;
	};

	/** @} */

	inline String const&	TextActor::GetText() const		{ return text_; }

	inline Font				TextActor::GetFont() const		{ return font_; }

	inline TextStyle		TextActor::GetStyle() const		{ return text_layout_.GetTextStyle(); }

	inline TextLayout		TextActor::GetLayout() const	{ return text_layout_; }

}