/*
 * $Id$
 * Copyright © 2007-2020 gingko - https://www.gingko.ovh/
 *
 * This file is part of Pouchin TV Mod, a free DVB-T viewer.
 * See https://www.pouchintv.fr/ for updates.
 *
 * Pouchin TV Mod 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.
 *
 * Pouchin TV Mod 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 *
 * Most files of this project have been changed from the Pouchin TV
 * project (Copyright © 2006 Pouchin <pouchinteve@free.fr>),
 * to use with a modified version of this software.
 * See http://pouchinteve.free.fr/ for the original project.
 */

#include "stdafx.h"
#include "helpdlg.h"
#include <richedit.h>

#if LZMA_HELP
	#include "lzma.h"
#endif

// ====================================================================================

/// Extraction et décompression de la ressource d'aide
bool CHelpDialogBase::ResReader::Extraction(UINT idRessource)
{
#if LZMA_HELP
	RawResource	vCompressed;

	if (!vCompressed.Extraction(NULL, idRessource))
		return false;
	if (!DecompressLzma(*this, vCompressed))
		return false;	// -> Décompression impossible
#else
	if (!__super::Extraction(NULL, idRessource))
		return false;
#endif
	sMm = MemRng(&*begin(), (UINT)size());
	return true;
};

// ====================================================================================

CHelpDialogBase::HelpTEMPLATE CHelpDialogBase::sDlgTmpl =
{
	{
		1,						// dlgVer
		0xffff,					// signature
		0,						// helpID
		0,						// exStyle
		DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME,	// style
		2,						// cDlgItems
		0, 0,					// x, y
		500,300,				// cx, cy
		0,						// menu
		0,						// windowClass
	#if defined(LANG) && LANG==LANG_FR
		L"Aide",				// title
	#else
		L"Help",				// title
	#endif
		8, 400,					// pointsize, weight
		0, 0x1,					// italic, charset
		L"MS Shell Dlg"			// typeface
	}, {
		0,						// helpID
		0,						// exStyle
		ES_MULTILINE | ES_READONLY | WS_BORDER | WS_VSCROLL | WS_TABSTOP | WS_CHILD | WS_VISIBLE,	// style
		4,4,					// x, y
		492,274,				// cx, cy
		eIDC_HELPTEXT,			// id
		L"RichEdit20A",			// windowClass
		0,						// title
		0						// extraCount
	}, {
		0,						// helpID
		0,						// exStyle
		BS_DEFPUSHBUTTON | WS_TABSTOP | WS_CHILD | WS_VISIBLE,	// style
		224,282,				// x, y
		50,14,					// cx, cy
		IDOK,					// id
		{0xffff,swc_Button},	// windowClass
		L"OK",					// title
		0						// extraCount
	}
};

DWORD CHelpDialogBase::ResReader::ESCallback(LPBYTE pbBuff, LONG cb, LONG *pcb)
{
	LONG		nLen	= min<LONG>(cb, sMm.siz);

	if (nLen > 0) {
		memcpy(pbBuff, sMm.ptr, nLen);
		*pcb = nLen;
		sMm += nLen;
	}
	return 0;
}

/// Traitement des messages de la boîte de dialogue
INT_PTR CHelpDialogBase::DialogProc(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg) {

	case WM_INITDIALOG: {
		static ResizingItemTpl asResizingTemplate[] =
		{
			{eIDC_HELPTEXT,	ANCHOR_FULL_FULL},
			{IDOK,				ANCHOR_BOTTOM_CENTER}
		};

		// Initialisation de la fenêtre
		SetWindowText(hDlg, strDlgTitle.c_str());
		hRtfCtl = GetItem(eIDC_HELPTEXT);
		WinSubClass<SC_0>::SubClass(hRtfCtl);

		ResReader	sResRdr;

		if (sResRdr.Extraction(idRtfResource)) {
			EDITSTREAM sEs = {(DWORD_PTR)&sResRdr, 0, sResRdr.ESCallback};

			SendMessage(hRtfCtl, EM_STREAMIN, SF_RTF, (LPARAM)&sEs);
		}

		cResizingHelper.Init(hDlg, asResizingTemplate, MkSIZE(400, 180));
		return TRUE; }

	case WM_GETMINMAXINFO:
		return cResizingHelper.Process_WM_GETMINMAXINFO(lParam);

	case WM_SIZE:
		cResizingHelper.Process_WM_SIZE(lParam);
		return TRUE;

	case WM_CLOSE:
		DestroyWindow(hDlg);
		return TRUE;

	case WM_COMMAND:
		// Commande reçue (clic, etc...)
		switch(wParam) {

		case eIDC_HELPTEXT:
			wParam = wParam; EN_CHANGE;
			break;

		case _cmd_(IDOK, BN_CLICKED):
			// Clic sur le bouton OK
			DestroyWindow(hDlg);
			return TRUE;
		}
	}

	// Autre message, traité par Windows
	return FALSE;
}

// ====================================================================================