/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Takashi Toyoshima <toyoshim@be-in.org>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the NPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
#include "nsNativeAppSupportBase.h"
#include "nsString.h"
#include "nsIObserver.h"

#include <Application.h>
#include <Window.h>
#include <View.h>
#include <StringView.h>
#include <Bitmap.h>
#include <Screen.h>
#include <Font.h>
#include <Resources.h>

#ifdef DEBUG
#define DEBUG_SPLASH 1
#endif

class nsSplashScreenBeOS : public nsISplashScreen,
                           public nsIObserver {
public:
	nsSplashScreenBeOS();
	virtual ~nsSplashScreenBeOS();

	NS_DECL_ISUPPORTS

	NS_IMETHOD Show();
	NS_IMETHOD Hide();

	NS_DECL_NSIOBSERVER

private:
	nsresult LoadBitmap();

	BWindow *window;
	BBitmap *bitmap;
  BStringView *textView;
}; // class nsSplashScreenBeOS

nsSplashScreenBeOS::nsSplashScreenBeOS()
		: window( NULL ) , bitmap( NULL ), textView(NULL) {
#ifdef DEBUG_SPLASH
	puts("nsSplashScreenBeOS::nsSlpashScreenBeOS()");
#endif
}

nsSplashScreenBeOS::~nsSplashScreenBeOS() {
#ifdef DEBUG_SPLASH
	puts("nsSplashScreenBeOS::~nsSlpashScreenBeOS()");
#endif
	Hide();
}

NS_IMPL_ISUPPORTS2(nsSplashScreenBeOS, nsISplashScreen, nsIObserver);

NS_IMETHODIMP
nsSplashScreenBeOS::Show() {
#ifdef DEBUG_SPLASH
	puts("nsSplashScreenBeOS::Show()");
#endif
	if (NULL == bitmap && NS_OK != LoadBitmap())
		return NS_ERROR_FAILURE;

	// Get the center position.
	BScreen scr;
	BRect scrRect = scr.Frame();
	BRect bmpRect = bitmap->Bounds();
	float winX = (scrRect.right - bmpRect.right) / 2;
	float winY = (scrRect.bottom - bmpRect.bottom) / 2;
	BRect winRect(winX, winY, winX + bmpRect.right, winY + bmpRect.bottom);
#ifdef DEBUG_SPLASH
	printf("SplashRect (%f, %f) - (%f, %f)\n", winRect.left, winRect.top,
	       winRect.right, winRect.bottom);
#endif
	if (NULL == window) {
		window = new BWindow(winRect,
		                     "mozilla splash",
		                     B_NO_BORDER_WINDOW_LOOK,
		                     B_MODAL_APP_WINDOW_FEEL,
		                     0);
		if (NULL == window)
			return NS_ERROR_FAILURE;
		BView *view = new BView(bmpRect, "splash view", B_FOLLOW_ALL_SIDES, B_WILL_DRAW);
		if (NULL != view) {
			window->AddChild(view);
			view->SetViewBitmap(bitmap);
		}
		window->Show();
	}
	return NS_OK;
}

NS_IMETHODIMP
nsSplashScreenBeOS::Hide() {
#ifdef DEBUG_SPLASH
	puts("nsSplashScreenBeOS::Hide()");
#endif
	if (NULL != window) {
		if (window->Lock())
			window->Quit();
		window = NULL;
	}
	if (NULL != bitmap) {
		delete bitmap;
		bitmap = NULL;
	}
	return NS_OK;
}

NS_IMETHODIMP
nsSplashScreenBeOS::Observe(nsISupports *aSubject,
                            const char *aTopic,
                            const PRUnichar *someData)
{
	if (!bitmap) return NS_OK;
	nsCAutoString statusString;
	statusString.AssignWithConversion(someData);
	if (textView == NULL) {
		BRect textRect = bitmap->Bounds();
		// Reduce the view size, and take into account the image frame
		textRect.bottom -= 10;
		textRect.left += 10;
		textRect.right -= 10; 
		textRect.top = textRect.bottom - 20;
		textView = new BStringView(textRect,
		                           "splash text",
		                           statusString.get(), 
		                           B_FOLLOW_LEFT | B_FOLLOW_V_CENTER);
		textView->SetViewColor(B_TRANSPARENT_COLOR);
		textView->SetHighColor(255,255,255,0);
		textView->SetLowColor(0,0,0,0);
		if (textView != NULL) {
			window->AddChild(textView);
		}
	} else {
		if (textView->LockLooper()) {
			textView->SetText(statusString.get());
			textView->UnlockLooper();
		}
	}
	return NS_OK;
}

nsresult
nsSplashScreenBeOS::LoadBitmap() {
	BResources *rsrc = be_app->AppResources();
	if (NULL == rsrc)
		return NS_ERROR_FAILURE;
	size_t length;
	const void *data = rsrc->LoadResource('BBMP', "MOZILLA:SPLASH", &length);
	if (NULL == data)
		return NS_ERROR_FAILURE;
	BMessage msg;
	if (B_OK != msg.Unflatten((const char *)data))
		return NS_ERROR_FAILURE;
	BBitmap *bmp = new BBitmap(&msg);
	if (NULL == bmp)
		return NS_ERROR_FAILURE;
	bitmap = new BBitmap(bmp, true);
	if (NULL == bitmap) {
		delete bmp;
		return NS_ERROR_FAILURE;
	}
	return NS_OK;
}


// Create instance of BeOS splash screen object.
nsresult
NS_CreateSplashScreen( nsISplashScreen **aResult ) {
	if ( aResult ) {
		*aResult = new nsSplashScreenBeOS;
		if ( *aResult ) {
			NS_ADDREF( *aResult );
			return NS_OK;
		} else {
			return NS_ERROR_OUT_OF_MEMORY;
		}
	} else {
		return NS_ERROR_NULL_POINTER;
	}
}


PRBool NS_CanRun()
{
	return PR_TRUE;
}