// Copyright (c) 2016-2018 Easy2D - 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 "include-forwards.h"
#include "Font.hpp"
#include "Resource.h"
#include "TextStyle.hpp"
#include "Singleton.hpp"
#include "../DX/helper.hpp"
#include "../DX/DeviceResources.h"
#include "../DX/TextRenderer.h"
#include "time.h"
#include <d2d1.h>
#include <d2d1_1.h>

namespace easy2d
{
	struct RenderStatus
	{
		TimePoint start;
		Duration duration;
		int primitives;
	};

	class E2D_API Renderer
		: public Singleton<Renderer>
	{
		E2D_DECLARE_SINGLETON(Renderer);

	public:
		HRESULT Init(HWND hwnd);

		void Destroy();

		inline RenderStatus const&		GetStatus() const				{ return status_; }

		inline DeviceResources*			GetDeviceResources() const		{ return device_resources_.Get(); }

		inline ITextRenderer*			GetTextRenderer() const			{ return text_renderer_.Get(); }

		inline ID2D1SolidColorBrush*	GetSolidColorBrush() const		{ return solid_color_brush_.Get(); }

		HRESULT BeginDraw();

		HRESULT EndDraw();

		HRESULT CreateLayer(
			ComPtr<ID2D1Layer>& layer
		);

		HRESULT DrawGeometry(
			ComPtr<ID2D1Geometry> const& geometry,
			const Color& stroke_color,
			float stroke_width,
			StrokeStyle stroke = StrokeStyle::Miter
		);

		HRESULT FillGeometry(
			ComPtr<ID2D1Geometry> const& geometry,
			Color const& fill_color
		);

		HRESULT DrawImage(
			ImagePtr const& image,
			Rect const& dest_rect
		);

		HRESULT DrawBitmap(
			ComPtr<ID2D1Bitmap> const& bitmap
		);

		HRESULT DrawTextLayout(
			ComPtr<IDWriteTextLayout> const& text_layout
		);

		// 设置清屏颜色
		void SetClearColor(
			Color const& clear_color
		);

		// 设置抗锯齿模式
		HRESULT SetAntialiasMode(
			bool enabled
		);

		// 设置文字抗锯齿模式
		HRESULT SetTextAntialiasMode(
			TextAntialias mode
		);

		// 设置画笔透明度
		void SetOpacity(
			float opacity
		);

		HRESULT SetTransform(
			const Matrix& matrix
		);

		HRESULT SetTextStyle(
			const Color& color,
			bool has_outline,
			const Color& outline_color,
			float outline_width,
			StrokeStyle outline_stroke
		);

		HRESULT PushClip(
			const Matrix& clip_matrix,
			const Size& clip_size
		);

		HRESULT PopClip();

		HRESULT PushLayer(
			ComPtr<ID2D1Layer> const& layer,
			LayerProperties const& properties
		);

		HRESULT PopLayer();

	private:
		Renderer();

		~Renderer();

		HRESULT CreateDeviceResources();

		HRESULT HandleDeviceLost();

	private:
		float opacity_;
		bool antialias_;
		unsigned long ref_count_;

		TextAntialias	text_antialias_;
		D2D1_COLOR_F	clear_color_;
		RenderStatus	status_;

		ComPtr<DeviceResources>			device_resources_;
		ComPtr<ID2D1Factory1>			factory_;
		ComPtr<ID2D1DeviceContext>		device_context_;
		ComPtr<ID2D1DrawingStateBlock>	drawing_state_block_;
		ComPtr<ITextRenderer>			text_renderer_;
		ComPtr<ID2D1SolidColorBrush>	solid_color_brush_;
	};
}