#ifndef IGUIRenderer_h__
#define IGUIRenderer_h__

#include "IImage.h"
#include "GUIVertex.h"
#include <LString.h>
#include <IMemoryStream.h>
#define MAX_DIP_COUNT 128
#define MAX_GUI_VERTEX_COUNT (6 * 4096)

namespace LifeGUI
{
	struct GUIBatch
	{
		IImage* tex;
		IImage* font;
		bool lines;
		int tex_id;
		size_t vertex_count;
        GUIBatch()
            :tex(nullptr), font(nullptr), vertex_count(0)
        {
            lines = false;
            tex_id = 0;
        }
	};
	class IGUIRenderer
	{
	public:
		IGUIRenderer();
		void Reset();
		void SetTexture(IImage* tex, IImage* font, bool line_geom);
		void Write(const GUIVertex& data);
		void Write(const GUIVertex* data, size_t count);
		virtual void SetScissor(const LifeMath::Rect2i& rect) = 0;
		virtual void Render() = 0;
		virtual void SetScreenSize(int w, int h) = 0;
	protected:
		LifeCore::IMemoryStream* buffer;
		LifeGUI::GUIBatch batch[MAX_DIP_COUNT];
		size_t batch_id;
	};
}

#endif // IGUIRenderer_h__