/*
 * AboutBox.h 
 * Copyright (c) 2009 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


// SOL9 
// 2009/11/15
// This is simple AboutBox class which DOES NOT depend on SOL::View class
// and SOL::Application class.
// This is a resource based Modal DialogBox to show simple about information.

/* 
 {
    AboutBox aboutBox(hparent, _T("MyAboutBox"));
    aboutBox.show();    
 }
 */

#pragma once

#include <windows.h>

namespace SOL  {

class AboutBox {
private:
    HWND    parent;
    HWND    hwnd;
    HINSTANCE hInstance;

    const TCHAR*    dialogTemplate;

/**
// resource.h
#define IDD_ABOUTBOX 1000

// applet.rc
IDD_ABOUTBOX DIALOGEX 0, 0, 218, 62
STYLE DS_SETFONT | DS_MODALFRAME | DS_3DLOOK | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Version Information - SolNetUser"
FONT 9, "Arial", 400, 0, 0x0
BEGIN
    ICON            IDI_SOLNETUSER, IDC_STATIC,14,14,20,20
    LTEXT           "SolNetUser, Version 1,0,0,1",IDC_STATIC,41,14,169,8,SS_NOPREFIX
    LTEXT           "Copyright (C) 2009 Antillia.com",IDC_STATIC,42,26,140,8
    DEFPUSHBUTTON   "OK",IDOK,163,41,47,14,WS_GROUP
END
 */



public:
    /**
     * Constructor
     * @param parent  Parent Window handle
     * @param dialogId  DialogId is an dialog template Id(integer) in a application somthing resourc file(*.rc).
     *   See the above sample
     */
    AboutBox(HWND parent, int dialogId)
    {
        this->parent = parent;

        this->hInstance = GetModuleHandle(NULL);
        //Shallow pointer copy
        this->dialogTemplate = MAKEINTRESOURCE(dialogId);
    }


/*
// applet.rc
SolAboutDialog DIALOGEX 0, 0, 218, 62
STYLE DS_SETFONT | DS_MODALFRAME | DS_3DLOOK | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Version Information - SolNetUser"
FONT 9, "Arial", 400, 0, 0x0
BEGIN
    ICON            IDI_SOLNETUSER, IDC_STATIC,14,14,20,20
    LTEXT           "SolNetUser, Version 1,0,0,1",IDC_STATIC,41,14,169,8,SS_NOPREFIX
    LTEXT           "Copyright (C) 2009 Antillia.com",IDC_STATIC,42,26,140,8
    DEFPUSHBUTTON   "OK",IDOK,163,41,47,14,WS_GROUP
END
 */

public:
    /**
     * Constructor
     * @param parent  Parent Window handle
     * @param dialogName  DialoName is a dialog template name(string) in a application somthing resourc file(*.rc).
     *   See the above sample
     */
    AboutBox(HWND parent, const TCHAR* dialogName)
    {
        this->parent = parent;

        this->hInstance = GetModuleHandle(NULL);
        //Shallow pointer copy

        this->dialogTemplate = dialogName;//
    }

public:
    /**
     * 1 Create a dialog by calling ::DialogBox of AboutBox::dialogProc CALLBACK.
     * 2 ::DialogBox enters a own event loop
     */
    int    show() {
        int rc = ::DialogBox(this->hInstance, 
                this->dialogTemplate, this->parent,
                 (DLGPROC)dialogProc);
        return rc;
    }


public:
    //DialogProcedure 
    static LRESULT CALLBACK dialogProc(
        HWND hwnd , UINT uMsg ,
        WPARAM wParam , LPARAM lParam)
    {
        switch (uMsg) {
        case WM_INITDIALOG:
            {
                center(hwnd, GetParent(hwnd));
                return TRUE; 
            }
            break;

        case WM_COMMAND:
            //If something command button (OK button) has beenn clicked
            //Simply end this modal event loop.
            EndDialog(hwnd, IDOK);
            break;

        case WM_CLOSE:
            EndDialog(hwnd, IDCANCEL);

        default:
            break;
        }
        return FALSE;
    }


public:
    static void center(HWND hwnd, HWND parent)
    {
        RECT rect;
        ::GetWindowRect(hwnd, &rect);

        int x        = 0;
        int y        = 0;
        int width  = rect.right - rect.left;
        int height = rect.bottom - rect.top;
        int scWidth  = ::GetSystemMetrics(SM_CXSCREEN);
        int scHeight = ::GetSystemMetrics(SM_CYSCREEN);
        
        if(parent) {
            RECT pr;
            GetWindowRect(parent, &pr);
            x = pr.left + (pr.right - pr.left - width)/2;
            y = pr.top  + (pr.bottom - pr.top - height)/2;
        }
        if((x+width) >scWidth) {
            x = scWidth - width;
        }
        if(x <0 ) { 
            x = 0;
        }
        if((y+height) >scHeight){
            y = scHeight - height;
        }
        if(y < 0) { 
            y = 0;
        }
        
        MoveWindow(hwnd, x, y, width, height, FALSE);
        ShowWindow(hwnd, SW_SHOW);
    }    

};

}