/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2009 Torus Knot Software Ltd

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.
-----------------------------------------------------------------------------
*/
/*
-----------------------------------------------------------------------------
Filename:    WindowEmbedding.cpp
Description: Stuff your windows full of OGRE
-----------------------------------------------------------------------------
*/
#include "Ogre.h"

using namespace Ogre;

void setupResources(void); // Just a prototype

void setupResources(void)
{
	// Load resource paths from config file
	ConfigFile cf;
	cf.load("resources.cfg");

	// Go through all sections & settings in the file
	ConfigFile::SectionIterator seci = cf.getSectionIterator();

	String secName, typeName, archName;
	while (seci.hasMoreElements())
	{
		secName = seci.peekNextKey();
		ConfigFile::SettingsMultiMap *settings = seci.getNext();
		ConfigFile::SettingsMultiMap::iterator i;
		for (i = settings->begin(); i != settings->end(); ++i)
		{
			typeName = i->first;
			archName = i->second;
			ResourceGroupManager::getSingleton().addResourceLocation(
				archName, typeName, secName);
		}
	}
}


//---------------------------------------------------------------------
// Windows Test
//---------------------------------------------------------------------
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
#include "windows.h"

RenderWindow* renderWindow = 0;
bool winActive = false;
bool winSizing = false;

LRESULT CALLBACK TestWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
	if (uMsg == WM_CREATE)
	{
		return 0;
	}


	if (!renderWindow)
		return DefWindowProc(hWnd, uMsg, wParam, lParam);

	switch( uMsg )
	{
	case WM_ACTIVATE:
		winActive = (LOWORD(wParam) != WA_INACTIVE);
		break;

	case WM_ENTERSIZEMOVE:
		winSizing = true;
		break;

	case WM_EXITSIZEMOVE:
		renderWindow->windowMovedOrResized();
		renderWindow->update();
		winSizing = false;
		break;

	case WM_MOVE:
	case WM_SIZE:
		if (!winSizing)
			renderWindow->windowMovedOrResized();
		break;

	case WM_GETMINMAXINFO:
		// Prevent the window from going smaller than some min size
		((MINMAXINFO*)lParam)->ptMinTrackSize.x = 100;
		((MINMAXINFO*)lParam)->ptMinTrackSize.y = 100;
		break;

	case WM_CLOSE:
		renderWindow->destroy(); // cleanup and call DestroyWindow
		PostQuitMessage(0); 
		return 0;
	case WM_PAINT:
		if (!winSizing)
		{
			renderWindow->update();
			return 0;
		}
		break;
	}

	return DefWindowProc( hWnd, uMsg, wParam, lParam );
}


INT WINAPI EmbeddedMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
{
	try 
	{
		// Create a new window

		// Style & size
		DWORD dwStyle = WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_OVERLAPPEDWINDOW;

		// Register the window class
		WNDCLASS wc = { 0, TestWndProc, 0, 0, hInst,
			LoadIcon(0, IDI_APPLICATION), LoadCursor(NULL, IDC_ARROW),
			(HBRUSH)GetStockObject(BLACK_BRUSH), 0, "TestWnd" };
		RegisterClass(&wc);

		HWND hwnd = CreateWindow("TestWnd", "Test embedding", dwStyle,
				0, 0, 800, 600, 0, 0, hInst, 0);

		Root root("", "");

		root.loadPlugin("RenderSystem_GL");
		//root.loadPlugin("RenderSystem_Direct3D9");
		root.loadPlugin("Plugin_ParticleFX");
		root.loadPlugin("Plugin_CgProgramManager");

		// select first renderer & init with no window
		root.setRenderSystem(*(root.getAvailableRenderers().begin()));
		root.initialise(false);

		// create first window manually
		NameValuePairList options;
		options["externalWindowHandle"] = 
			StringConverter::toString((size_t)hwnd);

		renderWindow = root.createRenderWindow("embedded", 800, 600, false, &options);

		setupResources();
		ResourceGroupManager::getSingleton().initialiseAllResourceGroups();

		SceneManager *scene = root.createSceneManager(Ogre::ST_GENERIC, "default");


		Camera *cam = scene->createCamera("cam");


		Viewport* vp = renderWindow->addViewport(cam);
		vp->setBackgroundColour(Ogre::ColourValue(0.5, 0.5, 0.7));
		cam->setAutoAspectRatio(true);
		cam->setPosition(0,0,300);
		cam->setDirection(0,0,-1);

		Entity* e = scene->createEntity("1", "ogrehead.mesh");
		scene->getRootSceneNode()->createChildSceneNode()->attachObject(e);
		Light* l = scene->createLight("l");
		l->setPosition(300, 100, -100);

		// message loop
		MSG msg;
		while(GetMessage(&msg, NULL, 0, 0 ) != 0)
		{ 
			TranslateMessage(&msg); 
			DispatchMessage(&msg); 
		} 

	} 
	catch( Exception& e ) 
	{
		MessageBox( NULL, e.getFullDescription().c_str(), 
			"An exception has occurred!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
	}


	return 0;
}

#endif