menubutton.c

在ｅｃｏｓ 下mingui 的移植开发

// $Id: menubutton.c,v 1.4 2000/11/23 06:26:38 ymwei Exp $
//
// button.c: the Menu Button Control module.
//
// Written by Wei Yongming.
//
// Copyright (C) 2000, BluePoint Software.
// Copyright (C) 2000, Wei Yongming.
//
// Current maintainer: Wei Yongming.
//
// Create date: 2000/11/16
//

/*
**  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
*/

/*
**  Alternatively, the contents of this file may be used under the terms
**  of the Mozilla Public License (the "MPL License") in which case the
**  provisions of the MPL License are applicable instead of those above.
*/

//
//
// Modify records:
//
//  Who             When        Where       For What                Status
//-----------------------------------------------------------------------------
//
// TODO:
// 

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <semaphore.h>


#ifdef __MINIGUI_LIB__
    #include "common.h"
    #include "minigui.h"
    #include "gdi.h"
    #include "window.h"
    #include "control.h"
    #include "cliprect.h"
    #include "internals.h"
    #include "ctrlclass.h"
    #include "ctrlmisc.h"
#else
    #include <minigui/common.h>
    #include <minigui/minigui.h>
    #include <minigui/gdi.h>
    #include <minigui/window.h>
    #include <minigui/control.h>
#endif

#define _USE_FIXSTR  1

#include "menubutton.h"

static int MenuButtonCtrlProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam);

BOOL RegisterMenuButtonControl (void)
{
    WNDCLASS WndClass;

    WndClass.spClassName = CTRL_MENUBTN;
    WndClass.dwStyle     = 0;
    WndClass.hCursor     = GetSystemCursor (IDC_ARROW);
    WndClass.iBkColor    = PIXEL_lightgray;
    WndClass.WinProc     = MenuButtonCtrlProc;

#ifdef __MINIGUI_LIB__
    return AddNewControlClass (&WndClass) == ERR_OK;
#else
    return RegisterWindowClass (&WndClass);
#endif
}

void MenuButtonControlCleanup (void)
{
#ifndef __MINIGUI_LIB__
    UnregisterWindowClass (CTRL_MENUBTN);
#endif
}

static BOOL mbInitMenuButtonData (MENUBTNDATA* mb_data, int len)
{
    int i;
    PMBITEM pmbi;
    
    mb_data->cur_sel = MB_INV_ITEM;

    // init item buffer.
    if (!(mb_data->buff_head = malloc (len * sizeof (MBITEM))))
        return FALSE;

    mb_data->buff_len = len;
    mb_data->buff_tail = mb_data->buff_head + len;
    mb_data->free_list = mb_data->buff_head;

    pmbi = mb_data->free_list;
    for (i = 0; i < len - 1; i++) {
        pmbi->next = pmbi + 1;
        pmbi ++;
    }
    pmbi->next = NULL;

    return TRUE;
}

static void mbMenuButtonCleanUp (MENUBTNDATA* mb_data)
{
    PMBITEM pmbi;
    PMBITEM next;

    pmbi = mb_data->first_item;
    while (pmbi) {
#if _USE_FIXSTR
        FreeFixStr (pmbi->text);
#else
        free (pmbi->text);
#endif
        next = pmbi->next;
        if (pmbi < mb_data->buff_head || pmbi > mb_data->buff_tail)
            free (pmbi);

        pmbi = next;
    }
    
    free (mb_data->buff_head);
}

static void mbResetMenuButtonContent (PMENUBTNDATA mb_data)
{
    int i;
    PMBITEM pmbi, next;

    mb_data->item_count = 0;
    mb_data->cur_sel    = MB_INV_ITEM;

    pmbi = mb_data->first_item;
    while (pmbi) {
#if _USE_FIXSTR
        FreeFixStr (pmbi->text);
#else
        free (pmbi->text);
#endif
        next = pmbi->next;
        if (pmbi < mb_data->buff_head || pmbi > mb_data->buff_tail)
            free (pmbi);

        pmbi = next;
    }

    mb_data->first_item = NULL;
    mb_data->free_list = mb_data->buff_head;

    pmbi = mb_data->free_list;
    for (i = 0; i < mb_data->buff_len - 1; i++) {
        pmbi->next = pmbi + 1;
        pmbi ++;
    }
    pmbi->next = NULL;

    return;
}

static PMBITEM mbAllocItem (PMENUBTNDATA mb_data)
{
    PMBITEM pmbi;

    if (mb_data->free_list) {
        pmbi = mb_data->free_list;
        mb_data->free_list = pmbi->next;
    }
    else
        pmbi = (PMBITEM) malloc (sizeof (MBITEM));
    
    return pmbi;
}

static void mbFreeItem (PMENUBTNDATA mb_data, PMBITEM pmbi)
{
    if (pmbi < mb_data->buff_head || pmbi > mb_data->buff_tail)
        free (pmbi);
    else {
        pmbi->next = mb_data->free_list;
        mb_data->free_list = pmbi;
    }
}

static int mbAddNewItem (DWORD dwStyle, 
        PMENUBTNDATA mb_data, PMBITEM newItem, int pos)
{
    PMBITEM pmbi;
    PMBITEM insPosItem = NULL;
    int insPos = 0;

    newItem->next = NULL;
    if (!mb_data->first_item)
        insPosItem = NULL;
    else if (dwStyle & MBS_SORT) {
        pmbi = mb_data->first_item;

        if (strcmp (newItem->text, pmbi->text) < 0) {
            insPosItem = NULL;
            insPos = 0;
        }
        else {
            while (pmbi->next) {
                if (strcmp (newItem->text, pmbi->next->text) <= 0)
                    break;
            
                pmbi = pmbi->next;
                insPos ++;
            }
            insPosItem = pmbi;
        }
    }
    else {
        pmbi = mb_data->first_item;

        if (pos < 0) {
            while (pmbi->next) {
                pmbi = pmbi->next;
                insPos ++;
            }
            insPosItem = pmbi;
        }
        else if (pos > 0) {
            int index = 0;

            while (pmbi->next) {
                if (pos == index)
                    break;
                pmbi = pmbi->next;
                index ++;
                insPos ++;
            }
            insPosItem = pmbi;
        }
    }

    if (insPosItem) {
        pmbi = insPosItem->next;
        insPosItem->next = newItem;
        newItem->next = pmbi;

        insPos ++;
    }
    else {
        pmbi = mb_data->first_item;
        mb_data->first_item = newItem;
        newItem->next = pmbi;
    }

    mb_data->item_count ++;

    return insPos;
}

static PMBITEM mbRemoveItem (PMENUBTNDATA mb_data, int* pos)
{
    int index = 0;
    PMBITEM pmbi, prev;

    if (!mb_data->first_item)
        return NULL;

    if (*pos < 0) {
        prev = mb_data->first_item;
        pmbi = mb_data->first_item;
        while (pmbi->next) {
            prev = pmbi;
            pmbi = pmbi->next;
            index ++;
        }

        if (pmbi == mb_data->first_item) {
            mb_data->first_item = mb_data->first_item->next;
            *pos = 0;
            return pmbi;
        }
        else {
            prev->next = pmbi->next;
            *pos = index;
            return pmbi;
        }
    }
    else if (*pos == 0) {
        pmbi = mb_data->first_item;
        mb_data->first_item = pmbi->next;
        return pmbi;
    }
    else {
        index = 0;
        prev = mb_data->first_item;
        pmbi = mb_data->first_item;
        while (pmbi->next) {
            if (*pos == index)
                break;

            prev = pmbi;
            pmbi = pmbi->next;
            index ++;
        }

        if (pmbi == mb_data->first_item) {
            mb_data->first_item = mb_data->first_item->next;
            *pos = 0;
            return pmbi;
        }
        else {
            prev->next = pmbi->next;
            *pos = index;
            return pmbi;
        }
    }

    return NULL;
}

static PMBITEM mbGetItem (PMENUBTNDATA mb_data, int pos)
{
    int index = 0;
    PMBITEM pmbi;

    pmbi = mb_data->first_item;

    while (pmbi) {
        if (index == pos)
            break;

        index ++;
        pmbi = pmbi->next;
    }

    return pmbi;
}

#define _WIDTH_BORDER    4
#define _WIDTH_MENUBAR   12
#define _HEIGHT_MENUBAR  8
#define _INTER_BARTEXT   4

static void mbGetRects (HWND hWnd, DWORD dwStyle,
                                    RECT* prcClient,
                                    RECT* prcText,
                                    RECT* prcMenuBar)
{
    GetClientRect (hWnd, prcClient);
    prcClient->right --;
    prcClient->bottom --;

    SetRect (prcText, prcClient->left + _WIDTH_BORDER,
                      prcClient->top + _WIDTH_BORDER,