accelkey.c

linux下的图形界面开发minigui最新源代码

/*
** $Id: accelkey.c,v 1.11 2003/09/04 03:15:07 weiym Exp $
**
** accelkey.c: The Accelerator module.
**
** Copyright (C) 2003 Feynman Software.
** Copyright (C) 1999 ~ 2002 Kang Xiaoning and Wei Yongming.
**
** Current maintainer: Wei Yongming.
** Create date: 1999.04.19
*/

/*
** This program 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 program 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/*
** TODO:
*/ 

#include <stdio.h>
#include <stdlib.h>

#include "common.h"
#include "minigui.h"
#include "gdi.h"
#include "window.h"
#include "cliprect.h"
#include "gal.h"
#include "internals.h"
#include "blockheap.h"
#include "accelkey.h"

static BLOCKHEAP ACHeap;

// acceltable construction 
inline static void InitFreeACList (void)
{
    InitBlockDataHeap (&ACHeap, sizeof (ACCELTABLE), SIZE_AC_HEAP);
}

inline static PACCELTABLE AccelTableAlloc (void)
{
    return (PACCELTABLE) BlockDataAlloc (&ACHeap);
}

inline static void FreeAccelTable (PACCELTABLE pac)
{
    BlockDataFree (&ACHeap, pac);
}

inline static void DestroyFreeACList (void)
{
    DestroyBlockDataHeap (&ACHeap);
}

// accelkey item routeline 
static BLOCKHEAP AIHeap;
inline static void InitFreeAIList (void)
{
    InitBlockDataHeap (&AIHeap, sizeof (ACCELITEM), SIZE_AI_HEAP);
}

inline static PACCELITEM AccelItemAlloc (void)
{
    return (PACCELITEM) BlockDataAlloc (&AIHeap);
}

inline static void FreeAccelItem (ACCELITEM* pai)
{
    BlockDataFree (&AIHeap, pai);
}

inline static void DestroyFreeAIList (void)
{
    DestroyBlockDataHeap (&AIHeap);
}

BOOL InitAccel (void)
{
    InitFreeACList ();
    InitFreeAIList ();

    return TRUE;
}

void TerminateAccel (void)
{
    DestroyFreeACList ();
    DestroyFreeAIList ();
}

/*********  Interfaces  ************************************/
HACCEL GUIAPI LoadAccelerators (const char* filename, int id)
{
    return 0;
}

HACCEL GUIAPI CreateAcceleratorTable (HWND hWnd)
{
    PACCELTABLE pac;

    if (!(pac = AccelTableAlloc ()))
        return 0;
    
    pac->category = TYPE_HACCEL;
    pac->hwnd = hWnd;
    pac->head = NULL;

    return (HACCEL)pac;
}

int GUIAPI IsAccel (HACCEL hac)
{
    PACCELTABLE pAcc = (PACCELTABLE)hac;

    if (pAcc->category != TYPE_HACCEL) return 0;

    return TRUE;
}

int GUIAPI DestroyAcceleratorTable (HACCEL hacc)
{
    PACCELTABLE pac;
    PACCELITEM pai, ptmpai;

    pac = (PACCELTABLE) hacc;

    if (pac->category != TYPE_HACCEL)
        return ERR_INVALID_HANDLE;
    
    pai = pac->head;
    while (pai) {
        ptmpai = pai->next;
        FreeAccelItem (pai);
        pai = ptmpai;
    }

    FreeAccelTable (pac);
    return 0;
}

static PACCELITEM *accFindMatchAccelKeys (HACCEL hacc, int key, DWORD keymask)
{
    PACCELITEM  pai;
    PACCELTABLE pacc = (PACCELTABLE) hacc;

    pai = pacc -> head;
    if (pai) {
        if (pai -> key == key && pai -> keymask == keymask) 
            return &(pacc->head);
        else {
            while (pai -> next) {
                if (pai -> next ->key == key && pai -> next -> keymask == keymask)
                    return &(pai->next) ;
                pai = pai ->next;
            }
        }
    }
    return NULL;
}
 
int GUIAPI AddAccelerators (HACCEL hacc, int key, DWORD keymask, WPARAM wParam , LPARAM lParam)
{
    PACCELTABLE pac;
    PACCELITEM pnewai;

    pac = (PACCELTABLE) hacc;

    if (pac->category != TYPE_HACCEL)
        return ERR_INVALID_HANDLE; 
    if (accFindMatchAccelKeys (hacc, key, keymask))
       return  ERR_ALREADY_EXIST;
    if (!(pnewai = AccelItemAlloc ())) 
        return ERR_RES_ALLOCATION;

    pnewai->key     = key;
    pnewai->keymask = keymask;
    pnewai->wParam  = wParam;  
    pnewai->lParam  = lParam;
    pnewai->next    = pac->head ;
    pac->head       = pnewai ;
    return 0;
}

int GUIAPI DeleteAccelerators (HACCEL hacc,int key, DWORD keymask)
{
    PACCELTABLE pac;
    PACCELITEM *ptempac;
    PACCELITEM ptempac1;

    pac = (PACCELTABLE) hacc;
    if (pac -> category != TYPE_HACCEL)
        return ERR_INVALID_HANDLE;
    if (!(ptempac=accFindMatchAccelKeys(hacc,key, keymask)))
        return ERR_NO_MATCH;

    ptempac1= ((*ptempac)->next);
    FreeAccelItem (*ptempac);
    (*ptempac) = ptempac1; 
    return 0;  
}

HACCEL GUIAPI CopyAcceleratorTable (HACCEL hacc)
{
    HACCEL hac;
    PACCELTABLE pac = (PACCELTABLE)hacc;
    PACCELITEM pai;

    if ((hac = (HACCEL) CreateAcceleratorTable (pac->hwnd))) {
        pai = pac -> head;
        while (pai) {
            if (AddAccelerators (hac, pai->key, pai->keymask, pai->wParam, pai->lParam)) {
                DestroyAcceleratorTable(hac);
                return (HACCEL) NULL;
            }
            pai = pai -> next;
                     
        }

        return hac;
    }
    else
        return (HACCEL) NULL; 
}

int GUIAPI TranslateAccelerator (HWND hWnd, HACCEL hAccel, PMSG pMsg)
{
    PACCELTABLE pac;
    PACCELITEM  *pai;
    int key;

    pac = (PACCELTABLE) hAccel;

    if (pac->hwnd != hWnd)
        return ERR_BAD_OWNER;

    if (pMsg->message == MSG_KEYDOWN || pMsg->message == MSG_SYSKEYDOWN)
        key = pMsg->wParam | 256;
    else if (pMsg->message == MSG_CHAR || pMsg->message == MSG_SYSCHAR)
        key = pMsg->wParam & 255;
    else 
        return ERR_NO_MATCH;

    if ((pai = accFindMatchAccelKeys (hAccel, key, pMsg->lParam))) {
        if (pMsg->message == MSG_SYSKEYDOWN || pMsg->message == MSG_SYSCHAR)
            return SendNotifyMessage (hWnd, 
                            MSG_SYSCOMMAND, (*pai)->wParam, (*pai)->lParam);
        else 
            return SendNotifyMessage (hWnd, 
                           MSG_COMMAND, (*pai)->wParam , (*pai)->lParam);
    }
    else 
        return ERR_NO_MATCH;
}