crown-engine/engine/gui/Gui.h

/*
Copyright (c) 2013 Daniele Bartolini, Michele Rossi
Copyright (c) 2012 Daniele Bartolini, Simone Boscaratto

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 "Matrix4x4.h"
#include "IdTable.h"
#include "IdArray.h"
#include "PoolAllocator.h"
#include "Vector2.h"
#include "Resource.h"

#define MAX_GUI_RECTS 64
#define MAX_GUI_TRIANGLES 64
#define MAX_GUI_IMAGES 64

namespace crown
{

typedef Id UniformId;
typedef Id GuiRectId;
typedef Id GuiTriangleId;
typedef Id GuiImageId;

struct Renderer;
struct RenderWorld;
struct Vector3;
struct GuiResource;
struct GuiRect;
struct GuiTriangle;
struct GuiImage;
struct Vector3;
struct Vector2;
struct Color4;

struct Gui
{
						Gui(RenderWorld& render_world, GuiResource* gr, Renderer& r);
						~Gui();

	Vector2				resolution() const;
	void				move(const Vector3& pos);

	GuiRectId			create_rect(const Vector3& pos, const Vector2& size, const Color4& color);
	void				update_rect(GuiRectId id, const Vector3& pos, const Vector2& size, const Color4& color);
	void				destroy_rect(GuiRectId id);

	GuiTriangleId		create_triangle(const Vector2& p1, const Vector2& p2, const Vector2& p3, const Color4& color);
	void				update_triangle(GuiTriangleId id, const Vector2& p1, const Vector2& p2, const Vector2& p3, const Color4& color);
	void				destroy_triangle(GuiTriangleId id);

	GuiImageId			create_image(ResourceId material, const Vector3& pos, const Vector2& size);
	void				update_image(GuiImageId id, const Vector3& pos, const Vector2& size);
	void				destroy_image(GuiImageId);

	void				render();

public:

	RenderWorld&		m_render_world;
	const GuiResource*	m_resource;
	Renderer&			m_r;

	Matrix4x4			m_projection;
	Matrix4x4			m_pose;

	PoolAllocator		m_rect_pool;
	PoolAllocator		m_triangle_pool;
	PoolAllocator		m_image_pool;

	IdArray<MAX_GUI_RECTS, GuiRect*> m_rects;
	IdArray<MAX_GUI_TRIANGLES, GuiTriangle*> m_triangles;
	IdArray<MAX_GUI_IMAGES, GuiImage*> m_images;
};

} // namespace crown