/*
===========================================================================

Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  

Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Doom 3 Source Code 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#include "../../idlib/precompiled.h"
#pragma hdrstop

#include "../../sys/win32/rc/guied_resource.h"
#include "../../renderer/tr_local.h"

#include "GEApp.h"
#include "GEViewer.h"

rvGEViewer::rvGEViewer ( )
{
	mInterface = NULL;
	mPaused    = true;
	mTime	   = 0;
}

bool rvGEViewer::Create ( HWND parent )
{
	WNDCLASSEX	wndClass;			
	
	// Make sure the alpha slider window class is registered
	memset ( &wndClass, 0, sizeof(wndClass) );	
	wndClass.cbSize			= sizeof(WNDCLASSEX);
	wndClass.lpszClassName	= "GUIED_VIEWER";		
	wndClass.lpfnWndProc	= rvGEViewer::WndProc;
	wndClass.hInstance		= gApp.GetInstance ( ); 
	wndClass.style			= CS_OWNDC|CS_BYTEALIGNWINDOW|CS_VREDRAW|CS_HREDRAW;
	wndClass.hbrBackground	= (HBRUSH) (COLOR_3DFACE + 1); 
	RegisterClassEx ( &wndClass );

	mWnd = CreateWindowEx ( WS_EX_TOOLWINDOW, "GUIED_VIEWER", "GUI Viewer", 
							WS_SYSMENU|WS_THICKFRAME|WS_CAPTION|WS_POPUP|WS_OVERLAPPED|WS_BORDER|WS_CLIPSIBLINGS|WS_CHILD, 
							CW_USEDEFAULT, CW_USEDEFAULT, SCREEN_WIDTH/2, SCREEN_HEIGHT/2, 
							parent, NULL, gApp.GetInstance(), this );

	gApp.GetOptions().GetWindowPlacement ( "viewer", mWnd );


	ShowWindow ( mWnd, SW_SHOW );
	UpdateWindow ( mWnd );							

	return true;
}

void rvGEViewer::Play ( void )
{
	if ( !mPaused )
	{
		return;
	}

	mLastTime = eventLoop->Milliseconds();
	mPaused   = false;

	TBBUTTONINFO tbinfo;
	tbinfo.cbSize = sizeof(TBBUTTONINFO);
	tbinfo.dwMask = TBIF_COMMAND|TBIF_IMAGE;
	tbinfo.iImage = 1;
	tbinfo.idCommand = ID_GUIED_VIEWER_PAUSE;
	SendMessage ( mToolbar, TB_SETBUTTONINFO, ID_GUIED_VIEWER_PLAY, (LPARAM)&tbinfo );
}

void rvGEViewer::Pause ( void )
{
	if ( mPaused )
	{
		return;
	}
	
	mPaused = true;

	TBBUTTONINFO tbinfo;
	tbinfo.cbSize = sizeof(TBBUTTONINFO);
	tbinfo.dwMask = TBIF_COMMAND|TBIF_IMAGE;
	tbinfo.iImage = 0;
	tbinfo.idCommand = ID_GUIED_VIEWER_PLAY;
	SendMessage ( mToolbar, TB_SETBUTTONINFO, ID_GUIED_VIEWER_PAUSE, (LPARAM)&tbinfo );
}


bool rvGEViewer::Destroy ( void )
{
	gApp.GetOptions().SetWindowPlacement ( "viewer", mWnd );

	DestroyWindow ( mWnd );
	return true;
}

bool rvGEViewer::OpenFile ( const char* filename )
{
	idStr tempfile;
	idStr ospath;
	
	delete mInterface;
	
	tempfile = filename;
	tempfile.StripPath ();
	tempfile.StripFileExtension ( );
	tempfile = va("guis/temp.guied", tempfile.c_str() );
	ospath = fileSystem->RelativePathToOSPath ( tempfile, "fs_basepath" );

	// Make sure the gui directory exists
	idStr createDir = ospath;
	createDir.StripFilename ( );
	CreateDirectory ( createDir, NULL );

	SetFileAttributes ( ospath, FILE_ATTRIBUTE_NORMAL );
	DeleteFile ( ospath );
	CopyFile ( filename, ospath, FALSE );
	SetFileAttributes ( ospath, FILE_ATTRIBUTE_NORMAL );

	mInterface = reinterpret_cast< idUserInterfaceLocal* >( uiManager->FindGui( tempfile, true, true ) );

	mInterface->SetStateString( "guied_item_0", "guied 1" );
	mInterface->SetStateString( "guied_item_1", "guied 2" );
	mInterface->SetStateString( "guied_item_2", "guied 3" );

	mTime = 0;

	mInterface->Activate ( true, mTime );

	DeleteFile ( ospath );

	Play ( );
	
	return true;
}

/*
=======
MapKey

Map from windows to Doom keynums
=======
*/
static int MapKey (int key)
{
	int result;
	int modified;
	bool is_extended;

	modified = ( key >> 16 ) & 255;

	if ( modified > 127 )
		return 0;

	if ( key & ( 1 << 24 ) ) {
		is_extended = true;
	}
	else {
		is_extended = false;
	}

	const unsigned char *scanToKey = Sys_GetScanTable();
	result = scanToKey[modified];

	// common->Printf( "Key: 0x%08x Modified: 0x%02x Extended: %s Result: 0x%02x\n", key, modified, (is_extended?"Y":"N"), result);

	if ( is_extended ) {
		switch ( result )
		{
		case K_PAUSE:
			return K_KP_NUMLOCK;
		case 0x0D:
			return K_KP_ENTER;
		case 0x2F:
			return K_KP_SLASH;
		case 0xAF:
			return K_KP_PLUS;
		}
	}
	else {
		switch ( result )
		{
		case K_HOME:
			return K_KP_HOME;
		case K_UPARROW:
			return K_KP_UPARROW;
		case K_PGUP:
			return K_KP_PGUP;
		case K_LEFTARROW:
			return K_KP_LEFTARROW;
		case K_RIGHTARROW:
			return K_KP_RIGHTARROW;
		case K_END:
			return K_KP_END;
		case K_DOWNARROW:
			return K_KP_DOWNARROW;
		case K_PGDN:
			return K_KP_PGDN;
		case K_INS:
			return K_KP_INS;
		case K_DEL:
			return K_KP_DEL;
		}
	}

	return result;
}

LRESULT CALLBACK rvGEViewer::WndProc ( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
{
	rvGEViewer* viewer = (rvGEViewer*) GetWindowLong ( hwnd, GWL_USERDATA );
	
	switch ( msg )
	{

		case WM_COMMAND:
			switch ( LOWORD(wParam) )
			{
				case ID_GUIED_VIEWER_PLAY:
					viewer->Play ( );
					break;

				case ID_GUIED_VIEWER_PAUSE:
					viewer->Pause ( );
					break;
			}
			break;
	
		case WM_SIZE:
		{
			RECT rToolbar;
			SendMessage ( viewer->mToolbar, TB_AUTOSIZE, 0, 0 );
			GetWindowRect ( viewer->mToolbar, &rToolbar );
			viewer->mToolbarHeight = rToolbar.bottom - rToolbar.top;
			break;
		}
	
		case WM_ACTIVATE:
			common->ActivateTool( LOWORD( wParam ) != WA_INACTIVE );
			break;

		case WM_ERASEBKGND:
			return TRUE;
			
		case WM_PAINT:
			assert ( viewer );
			viewer->HandlePaint ( wParam, lParam );
			break;
		
		case WM_LBUTTONDOWN:
			if ( viewer->mInterface )
			{
				sysEvent_t event;			
				bool       visuals;
				ZeroMemory ( &event, sizeof(event) ) ;
				event.evType = SE_KEY;
				event.evValue = K_MOUSE1;		
				event.evValue2 = true;	
				viewer->mInterface->HandleEvent ( &event, viewer->mTime, &visuals );
			}
			break;

		case WM_LBUTTONUP:
			if ( viewer->mInterface )
			{
				sysEvent_t event;			
				bool       visuals;
				ZeroMemory ( &event, sizeof(event) ) ;
				event.evType = SE_KEY;
				event.evValue = K_MOUSE1;		
				event.evValue2 = false;	
				viewer->mInterface->HandleEvent ( &event, viewer->mTime, &visuals );
			}
			break;

		case WM_KEYDOWN:
			if ( viewer->mInterface )
			{
				sysEvent_t event;			
				bool       visuals;
				ZeroMemory ( &event, sizeof(event) ) ;
				event.evType = SE_KEY;
				event.evValue = MapKey( lParam );		
				event.evValue2 = true;	
				viewer->mInterface->HandleEvent ( &event, viewer->mTime, &visuals );
			}
			break;

		case WM_SYSKEYUP:
		case WM_KEYUP:
			if ( viewer->mInterface )
			{
				sysEvent_t event;			
				bool       visuals;
				ZeroMemory ( &event, sizeof(event) ) ;
				event.evType = SE_KEY;
				event.evValue = MapKey( lParam );		
				event.evValue2 = false;	
				viewer->mInterface->HandleEvent ( &event, viewer->mTime, &visuals );
			}
			break;

		case WM_CHAR:

			if ( wParam == VK_ESCAPE )
			{
				SendMessage ( hwnd, WM_CLOSE, 0, 0 );
				break;
			}

			if ( viewer->mInterface )
			{
				sysEvent_t event;			
				bool       visuals;
				ZeroMemory ( &event, sizeof(event) ) ;
				event.evType = SE_CHAR;
				event.evValue = wParam;		
				event.evValue2 = false;	
				viewer->mInterface->HandleEvent ( &event, viewer->mTime, &visuals );
			}
			break;
	
		case WM_MOUSEMOVE:
			if ( viewer->mInterface )
			{
				float x = (float)(LOWORD(lParam)) / (float)viewer->mWindowWidth * SCREEN_WIDTH;
				float y = (float)(HIWORD(lParam)) / (float)(viewer->mWindowHeight - viewer->mToolbarHeight) * SCREEN_HEIGHT;
				sysEvent_t event;			
				bool       visuals;

				ZeroMemory ( &event, sizeof(event) ) ;
				event.evType = SE_MOUSE;
				event.evValue = (int)x - viewer->mInterface->CursorX();
				event.evValue2 = (int)y - viewer->mInterface->CursorY();
				viewer->mInterface->HandleEvent ( &event, viewer->mTime, &visuals );
			}
			break;

		case WM_CLOSE:
			viewer->mInterface = NULL;
			gApp.CloseViewer ( );
			return 0;
	
		case WM_CREATE:
		{
			CREATESTRUCT* cs = (CREATESTRUCT*) lParam;
			SetWindowLong ( hwnd, GWL_USERDATA, (LONG)cs->lpCreateParams );
					
			viewer = (rvGEViewer*)cs->lpCreateParams;
			viewer->mWnd = hwnd;
			viewer->SetupPixelFormat ( );

			viewer->mToolbar = CreateWindowEx ( 0, TOOLBARCLASSNAME, "", CCS_BOTTOM|WS_CHILD|WS_VISIBLE,0,0,0,0, hwnd, (HMENU)IDR_GUIED_VIEWERTOOLBAR, gApp.GetInstance(), NULL );

		    // Send the TB_BUTTONSTRUCTSIZE message, which is required for backward compatibility. 
			SendMessage( viewer->mToolbar, TB_BUTTONSTRUCTSIZE, ( WPARAM )sizeof( TBBUTTON ), 0 );
			
			SendMessage ( viewer->mToolbar, TB_SETBUTTONSIZE, 0, MAKELONG(16,15) );
			
			SendMessage ( viewer->mToolbar, TB_SETSTYLE, 0, SendMessage ( viewer->mToolbar, TB_GETSTYLE, 0, 0 ) | TBSTYLE_FLAT );
			
			TBMETRICS tbmet;
			tbmet.cbSize = sizeof(TBMETRICS);
			SendMessage ( viewer->mToolbar, TB_GETMETRICS, 0, (LPARAM)&tbmet );
			tbmet.cyPad = 0;
			tbmet.cyBarPad = 0;
			SendMessage ( viewer->mToolbar, TB_SETMETRICS, 0, (LPARAM)&tbmet );

		    // Add the bitmap containing button images to the toolbar. 
		    TBADDBITMAP	tbab; 
			tbab.hInst = win32.hInstance; 
			tbab.nID = IDR_GUIED_VIEWERTOOLBAR; 
			SendMessage( viewer->mToolbar, TB_ADDBITMAP, (WPARAM)4, (LPARAM) &tbab ); 

		    TBBUTTON tbb[4]; 
			tbb[0].fsStyle = BTNS_SEP; 
			tbb[0].fsState = 0;

		    tbb[1].idCommand = ID_GUIED_VIEWER_START;
			tbb[1].iBitmap = 2; 
			tbb[1].fsState = 0; 
			tbb[1].fsStyle = BTNS_BUTTON; 
			tbb[1].dwData = 0; 
			tbb[1].iString = -1; 

		    tbb[2].idCommand = ID_GUIED_VIEWER_PAUSE;
			tbb[2].iBitmap = 1; 
			tbb[2].fsState = TBSTATE_ENABLED; 
			tbb[2].fsStyle = BTNS_BUTTON; 
			tbb[2].dwData = 0; 
			tbb[2].iString = -1; 

			tbb[3].fsStyle = BTNS_SEP; 
			tbb[3].fsState = 0;

			SendMessage( viewer->mToolbar, TB_ADDBUTTONS, (WPARAM)4, (LPARAM) &tbb ); 

			break;
		}
		
		case WM_SETCURSOR:
			SetCursor ( NULL );
			break;
	}
	
	return DefWindowProc ( hwnd, msg, wParam, lParam );
}

LRESULT rvGEViewer::HandlePaint ( WPARAM wParam, LPARAM lParam )
{
	HDC			dc;
	PAINTSTRUCT ps;

	dc = BeginPaint ( mWnd, &ps );

	Render ( dc );
		
	EndPaint ( mWnd, &ps );
	
	return 1;
}

/*
================
rvGEViewer::SetupPixelFormat

Setup the pixel format for the opengl context
================
*/
bool rvGEViewer::SetupPixelFormat ( void )
{
	HDC	 hDC    = GetDC ( mWnd );
	bool result = true;

	int pixelFormat = ChoosePixelFormat(hDC, &win32.pfd);
	if (pixelFormat > 0) 
	{
		if (SetPixelFormat(hDC, pixelFormat, &win32.pfd) == NULL) 
		{
			result = false;
		}
	}
	else 
	{
		result = false;
	}
	
	ReleaseDC ( mWnd, hDC );

	return result;
}

void rvGEViewer::Render	( HDC dc )
{
	int	frontEnd;
	int	backEnd;
	
	// Switch GL contexts to our dc
	if (!qwglMakeCurrent( dc, win32.hGLRC )) 
	{
		common->Printf("ERROR: wglMakeCurrent failed.. Error:%i\n", qglGetError());
		common->Printf("Please restart Q3Radiant if the Map view is not working\n");
	    return;
	}

	if ( !mPaused )
	{
		mTime += eventLoop->Milliseconds() - mLastTime;
		mLastTime = eventLoop->Milliseconds();
	}	

	RECT rClient;
	RECT rToolbar;
	GetClientRect ( mWnd, &rClient );
	GetClientRect ( mToolbar, &rToolbar );
	mWindowWidth = rClient.right - rClient.left;
	mWindowHeight = rClient.bottom - rClient.top;

	qglViewport(0, 0, mWindowWidth, mWindowHeight );
	qglScissor(0, 0, mWindowWidth, mWindowHeight );
	qglClearColor ( 0, 0, 0, 0 );

	qglDisable(GL_DEPTH_TEST);
	qglDisable(GL_CULL_FACE);
	qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	// Render the workspace below
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	qglOrtho(0,mWindowWidth, mWindowHeight, 0, -1, 1);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	if ( mInterface )
	{
		viewDef_t viewDef;
		memset ( &viewDef, 0, sizeof(viewDef) );
		tr.viewDef = &viewDef;
		viewDef.renderView.x = 0;
		viewDef.renderView.y = mToolbarHeight;
		viewDef.renderView.width = mWindowWidth;
		viewDef.renderView.height = mWindowHeight - mToolbarHeight;
		viewDef.scissor.x1 = 0;
		viewDef.scissor.y1 = 0; // (rToolbar.bottom-rToolbar.top);
		viewDef.scissor.x2 = mWindowWidth;
		viewDef.scissor.y2 = mWindowHeight;
		viewDef.isEditor = true;

		// Prepare the renderSystem view to draw the GUI in
		renderSystem->BeginFrame(mWindowWidth, mWindowHeight );
		
		// Draw the gui
		mInterface->Redraw ( mTime );
		
		// We are done using the renderSystem now
		renderSystem->EndFrame( &frontEnd, &backEnd );
	}

	qglFinish ( );
	qwglSwapBuffers(dc);
}

void rvGEViewer::RunFrame ( void )
{
	if ( !mPaused )
	{
		HDC hDC = GetDC ( mWnd );		
		Render ( hDC );		
		ReleaseDC ( mWnd, hDC );
	}
}