/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright (c) 2012-14 Miranda NG project (http://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

This program 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 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 General Public License for more details.

You should have received a copy of the GNU 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.
*/

#include "commonheaders.h"

#define STR_VERSION_FORMAT _T("Miranda NG\nv%S")

INT_PTR CALLBACK DlgProcAbout(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	static int iState = 0;
	switch (msg) {
	case WM_INITDIALOG:
		TranslateDialogDefault(hwndDlg);
		{	TCHAR filename[MAX_PATH], *productCopyright;
			DWORD unused;
			DWORD verInfoSize;
			UINT blockSize;
			PVOID pVerInfo;

			GetModuleFileName(NULL, filename, SIZEOF(filename));
			verInfoSize = GetFileVersionInfoSize(filename, &unused);
			pVerInfo = mir_alloc(verInfoSize);
			GetFileVersionInfo(filename, 0, verInfoSize, pVerInfo);
			VerQueryValue(pVerInfo, _T("\\StringFileInfo\\000004b0\\LegalCopyright"), (LPVOID*)&productCopyright, &blockSize);
			SetDlgItemText(hwndDlg, IDC_DEVS, productCopyright);
			mir_free(pVerInfo);
		}
		{
			char productVersion[56];
			CallService(MS_SYSTEM_GETVERSIONTEXT, SIZEOF(productVersion), (LPARAM)productVersion);

			TCHAR str[64];
			mir_sntprintf(str, SIZEOF(str), STR_VERSION_FORMAT, productVersion);
			SetDlgItemText(hwndDlg, IDC_HEADERBAR, str);
		}
		ShowWindow(GetDlgItem(hwndDlg, IDC_CREDITSFILE), SW_HIDE);
		{
			HRSRC   hResInfo = FindResource(hInst, MAKEINTRESOURCE(IDR_CREDITS), _T("TEXT"));
			DWORD   ResSize = SizeofResource(hInst, hResInfo);
			HGLOBAL hRes = LoadResource(hInst, hResInfo);
			char*   pszMsg = (char*)LockResource(hRes);
			if (pszMsg)
			{
				char* pszMsgt = (char*)alloca(ResSize + 1);
				memcpy(pszMsgt, pszMsg, ResSize); pszMsgt[ResSize] = 0;

				TCHAR *ptszMsg;
				if (ResSize >=3 && pszMsgt[0] == '\xef' && pszMsgt[1] == '\xbb' && pszMsgt[2] == '\xbf')
					ptszMsg = Utf8DecodeT(pszMsgt + 3);
				else
					ptszMsg = mir_a2t_cp(pszMsgt, 1252);

				SetDlgItemText(hwndDlg, IDC_CREDITSFILE, ptszMsg);
				UnlockResource(pszMsg);
				mir_free(ptszMsg);
			}
			FreeResource(hRes);
		}
		Window_SetIcon_IcoLib(hwndDlg, SKINICON_OTHER_MIRANDA);
		return TRUE;

	case WM_COMMAND:
		switch(LOWORD(wParam)) {
		case IDOK:
		case IDCANCEL:
			DestroyWindow(hwndDlg);
			return TRUE;
		case IDC_CONTRIBLINK:
			if (iState) {
				iState = 0;
				SetDlgItemText(hwndDlg, IDC_CONTRIBLINK, TranslateT("Credits >"));
				ShowWindow(GetDlgItem(hwndDlg, IDC_DEVS), SW_SHOW);
				ShowWindow(GetDlgItem(hwndDlg, IDC_CREDITSFILE), SW_HIDE);
			}
			else {
				iState = 1;
				SetDlgItemText(hwndDlg, IDC_CONTRIBLINK, TranslateT("< Copyright"));
				ShowWindow(GetDlgItem(hwndDlg, IDC_DEVS), SW_HIDE);
				ShowWindow(GetDlgItem(hwndDlg, IDC_CREDITSFILE), SW_SHOW);
			}
			break;
		}
		break;

	case WM_CTLCOLOREDIT:
	case WM_CTLCOLORSTATIC:
		switch (GetWindowLongPtr((HWND)lParam, GWL_ID)) {
		case IDC_WHITERECT:
		case IDC_CREDITSFILE:
		case IDC_DEVS:
			SetTextColor((HDC)wParam, GetSysColor(COLOR_WINDOWTEXT));
			break;
		default:
			return FALSE;
      }
		SetBkColor((HDC)wParam, GetSysColor(COLOR_WINDOW));
		return (INT_PTR)GetSysColorBrush(COLOR_WINDOW);

	case WM_DESTROY:
		Window_FreeIcon_IcoLib(hwndDlg);
		{
			HFONT hFont = (HFONT)SendDlgItemMessage(hwndDlg, IDC_VERSION, WM_GETFONT, 0, 0);
			SendDlgItemMessage(hwndDlg, IDC_VERSION, WM_SETFONT, SendDlgItemMessage(hwndDlg, IDOK, WM_GETFONT, 0, 0), 0);
			DeleteObject(hFont);
		}
		break;
	}
	return FALSE;
}