about.c

在ｅｃｏｓ 下mingui 的移植开发

//
// about.c: the About Dialog module.
//
// Copyright (C) 1999, Wei Yongming.
// 
// Current maintainer: Wei Yongming.

/*
**  This library is free software; you can redistribute it and/or
**  modify it under the terms of the GNU Library General Public
**  License as published by the Free Software Foundation; either
**  version 2 of the License, or (at your option) any later version.
**
**  This library 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
**  Library General Public License for more details.
**
**  You should have received a copy of the GNU Library General Public
**  License along with this library; if not, write to the Free
**  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
**  MA 02111-1307, USA
*/

//
// Create date: 1999/8/28
//
// Modify records:
//
//  Who             When        Where       For What                Status
//-----------------------------------------------------------------------------
//
// TODO:
// 

#include <pthread.h>
#include <semaphore.h>


#include "common.h"
#include "minigui.h"
#include "gdi.h"
#include "window.h"
#include "control.h"

#ifndef lint
static char fileid[] = "$Id: about.c,v 1.6 2000/11/20 05:46:45 ymwei Exp $";
#endif

static HWND sg_AboutWnd = HWND_DESKTOP;

int AboutWinProc(HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
{
    static BITMAP bmpLogo;
    static HWND   hOK;
    RECT          rcClient;
    
    switch (message) {
        case MSG_CREATE:

            if (!LoadSystemBitmap (&bmpLogo, "logo"))
                return -1;
            sg_AboutWnd = hWnd;

            GetClientRect (hWnd, &rcClient);
            hOK = CreateWindow ("button", 
                                "Close", 
                                WS_CHILD | BS_DEFPUSHBUTTON | WS_VISIBLE, 
                                IDOK, 
                                (RECTW(rcClient) - 80)>>1, 
                                rcClient.bottom - 40, 
                                80, 24, hWnd, 0);
        break;
        
        case MSG_COMMAND:
            if (LOWORD (wParam) == IDOK 
                && HIWORD (wParam) == BN_CLICKED)
                PostMessage (hWnd, MSG_CLOSE, 0, 0);
        break;
       
        case MSG_PAINT:
        {
            HDC hdc;
            
            hdc = BeginPaint (hWnd);
            
            GetClientRect (hWnd, &rcClient);
            FillBoxWithBitmap (hdc, 
                (RECTW(rcClient) - bmpLogo.bmWidth)>>1, 10, 
                0, 0, &bmpLogo);
            
            rcClient.top = 60;
            rcClient.bottom -= 50;
            SetTextColor (hdc, PIXEL_lightgray);
            SetBkColor (hdc, PIXEL_black);
            DrawText (hdc, "MiniGUI -- a mini pthread-based GUI support library.\n"
                           "MiniGUI is free software; you can\n"
                           "redistribute it and/or modify it under\n"
                           "the terms of the GNU LGPL.\n"
                           "About Authors to see CREDITS.\n",
                           -1, &rcClient, DT_WORDBREAK | DT_CENTER);
            EndPaint (hWnd, hdc);
        }
        return 0;

        case MSG_CLOSE:
            UnloadBitmap (&bmpLogo);
            DestroyWindow (hOK);
            DestroyMainWindow (hWnd);
            sg_AboutWnd = HWND_DESKTOP;
            PostQuitMessage (hWnd);
        return 0;
    }

    return DefaultMainWinProc(hWnd, message, wParam, lParam);
}

static void InitAboutDialogCreateInfo (PMAINWINCREATE pCreateInfo)
{
    pCreateInfo->dwStyle = WS_CAPTION | WS_SYSMENU | WS_VISIBLE 
                                      | WS_BORDER;
    pCreateInfo->dwExStyle = WS_EX_NONE;
    pCreateInfo->spCaption = "About MiniGUI" ;
    pCreateInfo->hMenu = 0;
    pCreateInfo->hCursor = GetSystemCursor(0);
    pCreateInfo->hIcon = 0;
    pCreateInfo->MainWindowProc = AboutWinProc;
    pCreateInfo->lx = 10; 
    pCreateInfo->ty = 5;
    if (GetSysCharWidth () == 6) {
        pCreateInfo->rx = 260;
        pCreateInfo->by = 215;
    }
    else {
        pCreateInfo->rx = 340;
        pCreateInfo->by = 240;
    }
    pCreateInfo->iBkColor = PIXEL_black; 
    pCreateInfo->dwAddData = 0;
    pCreateInfo->hHosting = HWND_DESKTOP;
}

static void* AboutDialogThread (void* data)
{
    MSG Msg;
    MAINWINCREATE CreateInfo;
    HWND hMainWnd;

    InitAboutDialogCreateInfo (&CreateInfo);

    hMainWnd = CreateMainWindow(&CreateInfo);

    if (hMainWnd == HWND_INVALID)
        return NULL;

    ShowWindow(hMainWnd, SW_SHOWNORMAL);

    while( GetMessage(&Msg, hMainWnd) ) {
        DispatchMessage(&Msg);
    }

    MainWindowThreadCleanup(hMainWnd);
    return NULL;
}

void OpenAboutDialog ()
{
    pthread_t thread;
    
    if (sg_AboutWnd != HWND_DESKTOP) {
        ShowWindow (sg_AboutWnd, SW_SHOWNORMAL);
        return;
    }

    CreateThreadForMainWindow (&thread, NULL, AboutDialogThread, 0);
}