mainwndow.c

minigui实现带背景图片的主窗口的例子

/* 
** $Id: taskbar.c,v 1.23 2007-08-30 02:02:03 xwyan Exp $
**
** The taskbar of MDE
**
** Copyright (c) 2001, Wei Yongming ([e-mail])
** Copyright (C) 2003 ~ 2007 Feynman Software.
**
** Create date: 2001/09/07
*/

/*
**  This source 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 software 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 library; if not, write to the Free
**  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
**  MA 02111-1307, USA
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>

#include <minigui/common.h>
#include <minigui/minigui.h>
#include <minigui/gdi.h>
#include <minigui/window.h>
#include <minigui/control.h>
#include <minigui/mgext.h>

#include "mainwndow.h"

APPINFO app_info;

static void free_app_info (void)
{
    int i;
    APPITEM* item;

    item = app_info.app_items;
    for (i = 0; i < app_info.nr_apps; i++, item++) {
        if (item->bmp.bmBits) {
            UnloadBitmap (&item->bmp);
            item->bmp.bmBits = NULL;
        }
    }

    free (app_info.app_items);
    app_info.app_items = NULL;
}

static void strsubchr (char* string, int c1, int c2)
{
    char* tmp;

    while (string && (tmp = strchr (string, c1))) {
        *tmp = c2;
        string = tmp;
    }
}

static BOOL get_app_info (void)
{
    int i;
    APPITEM* item;
    char section [10];


    if (GetIntValueFromEtcFile (APP_INFO_FILE, "mginit", "nr", &app_info.nr_apps) != ETC_OK)
        return FALSE;

    if (app_info.nr_apps <= 0)
        return FALSE;

    GetIntValueFromEtcFile (APP_INFO_FILE, "mginit", "autostart", &app_info.autostart);
    
    if (GetValueFromEtcFile (APP_INFO_FILE, "mginit", "logo", app_info.logo_path, PATH_MAX + NAME_MAX) != ETC_OK)
        return FALSE;           

    if (app_info.autostart >= app_info.nr_apps || app_info.autostart < 0)
        app_info.autostart = 0;

    if ((app_info.app_items = (APPITEM*)calloc (app_info.nr_apps, sizeof (APPITEM))) == NULL) {
        return FALSE;
    }

    item = app_info.app_items;
    for (i = 0; i < app_info.nr_apps; i++, item++) {

        sprintf (section, "app%d", i);
        if (GetValueFromEtcFile (APP_INFO_FILE, section, "path", item->path, PATH_MAX) != ETC_OK)
            goto error;

        if (GetValueFromEtcFile (APP_INFO_FILE, section, "name", item->name, NAME_MAX) != ETC_OK)
            goto error;

        if (GetValueFromEtcFile (APP_INFO_FILE, section, "layer", item->layer, LEN_LAYER_NAME) != ETC_OK)
            goto error;

        if (GetValueFromEtcFile (APP_INFO_FILE, section, "tip", item->tip, TIP_MAX) != ETC_OK)
            goto error;

        strsubchr (item->tip, '&', ' ');

        if (GetValueFromEtcFile (APP_INFO_FILE, section, "icon", item->bmp_path, PATH_MAX + NAME_MAX) != ETC_OK)
            goto error;

        if (LoadBitmap (HDC_SCREEN, &item->bmp, item->bmp_path) != ERR_BMP_OK)
            goto error;


        item->cdpath = TRUE;
    }
    return TRUE;

error:
    free_app_info ();
    return FALSE;
}

pid_t exec_app (int app)
{
    pid_t pid = 0;
    char buff [PATH_MAX + NAME_MAX + 1];

    if ((pid = vfork ()) > 0) {
        fprintf (stderr, "new child, pid: %d.\n", pid);
    }
    else if (pid == 0) {
        if (app_info.app_items [app].cdpath) {
            chdir (app_info.app_items [app].path);
        }
        strcpy (buff, app_info.app_items [app].path);
        strcat (buff, app_info.app_items [app].name);

        if (app_info.app_items [app].layer [0]) {
            execl (buff, app_info.app_items [app].name, 
                        "-layer", app_info.app_items [app].layer, NULL);
        }
        else {
            execl (buff, app_info.app_items [app].name, NULL);
        }
        perror ("execl");
        _exit (1);
    }
    else {
        perror ("vfork");

    }

    return pid;
}

/**************************************************************************** 
 * 名称：WinProc() 
 * 功能：主窗口过程函数。 
 *		处理MSG_PAINT消息，在窗口中显示6个图标。 
 *		处理MSG_CHAR消息，进行图标菜单选择操作。 
 * 入口参数：
 *		hWnd        窗口句柄 
 *		message     消息 
 *		wParam      消息附加参数1(对于不同的消息，有不同的用途) 
 *		lParam      消息附加参数2(对于不同的消息，有不同的用途) 
 * 出口参数：消息已处理则返回0。 
 ****************************************************************************/  
static HWND hIMEWnd = 0;
static BITMAP bmp_bkgnd;
static int MainWindowProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
{
	static BITMAP  s_startbmp;  
	static BITMAP  s_bmp[6];  
	static PLOGFONT s_font, s_font1;  
	static int s_sel = 0;  
	static int s_selbak = 0;  
	int  i;  

    switch (message) {
        case MSG_CREATE:
            CreateWindow (CTRL_BUTTON, 
                          "Close", 
                          WS_CHILD | BS_PUSHBUTTON | WS_VISIBLE, 
                          IDCANCEL, 
                          100, 100, 60, 30, hWnd, 0);
        break;
        
        case MSG_COMMAND:
        {
            int id   = LOWORD(wParam);
            int code = HIWORD(wParam);
            if (wParam == IDCANCEL) {
                PostMessage (hWnd, MSG_CLOSE, 0, 0);
            }
        }
        break;

       	case MSG_ERASEBKGND: 
		{			
            HDC hdc = (HDC)wParam;
            const RECT* clip = (const RECT*) lParam;
            BOOL fGetDC = FALSE;
            RECT rcTemp;
                    
            if (hdc == 0) {
                hdc = GetClientDC (hWnd);
                fGetDC = TRUE;
            }       
                    
            if (clip) {
                rcTemp = *clip;
                ScreenToClient (hWnd, &rcTemp.left, &rcTemp.top);
                ScreenToClient (hWnd, &rcTemp.right, &rcTemp.bottom);
                IncludeClipRect (hdc, &rcTemp);
            }

            //FillBoxWithBitmap (hdc, 0, 0, 0, 0, &bmp_bkgnd);	//显示原始尺寸
			FillBoxWithBitmap (hdc, 0, 0, rcTemp.right, rcTemp.bottom, &bmp_bkgnd);	//按比例缩放显示

            if (fGetDC)
                ReleaseDC (hdc);
            return 0;
        }  

        case MSG_CLOSE:
            if (MessageBox (hWnd,
                            "Are you sure to quit?", 
                            "DlgTest", 
                            MB_YESNOCANCEL | MB_ICONQUESTION |
                            MB_BASEDONPARENT) != IDYES)
                return 0;

            DestroyMainWindow (hWnd);
            PostQuitMessage (hWnd);
        return 0;
    }

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

/**************************************************************************** 
 * 名称：InitMainWindow() 
 * 功能：建立主窗口。 
 * 入口参数：无
 * 出口参数：返回主窗口句柄。 
 ****************************************************************************/
HWND InitMainWindow (void)
{
	MAINWINCREATE CreateInfo;
	HWND hMainWnd;

    CreateInfo.dwStyle = WS_ABSSCRPOS | WS_VISIBLE | WS_TABSTOP;
    CreateInfo.dwExStyle = WS_EX_NONE;//WS_EX_TRANSPARENT;
    CreateInfo.spCaption = "";
    CreateInfo.hMenu = 0;
    CreateInfo.hCursor = 0;
    CreateInfo.hIcon = 0;
    CreateInfo.MainWindowProc = MainWindowProc;
    CreateInfo.lx = 0; 
    CreateInfo.ty = 0;
    CreateInfo.rx = 640;
    CreateInfo.by = 480;
    CreateInfo.iBkColor = GetWindowElementColor (BKC_CONTROL_DEF); 
    CreateInfo.dwAddData = 0;
    CreateInfo.hHosting = HWND_DESKTOP;
	
	LoadBitmap(HDC_SCREEN, &bmp_bkgnd, "res/Nature1.jpg");

	hMainWnd = CreateMainWindow (&CreateInfo);
	
	return hMainWnd;
}
/*
HWND create_mainwin_dlg (void)
{
    MAINWINCREATE CreateInfo;
    HWND hMainwinDlg;

    InitCreateInfo (&CreateInfo);
    hMainwinDlg = CreateMainWindow (&CreateInfo);

	//把该函数调用移到输入法程序代码中
#ifdef _IME_GB2312
    hIMEWnd = GBIMEWindowEx (hMainwinDlg,
                    0,
                    480 - HEIGHT_IMEWIN,
                    640, 
					480,
					FALSE);
#endif

    return hMainwinDlg;
}
*/