source: downloads/Tests/PlayPen/src/WindowEmbedding.cpp @ 8

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

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
/*
-----------------------------------------------------------------------------
Filename:    WindowEmbedding.cpp
Description: Stuff your windows full of OGRE
-----------------------------------------------------------------------------
*/
#include "Ogre.h"

using namespace Ogre;

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 occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
        }


        return 0;
}

#endif