currencyconvertore.c

mtk工具箱,计算器的详细设计,可以由此入手了解mtk的

        {
            g_cconv_ctx->bRateDefined = TRUE;
        }

        WriteValue((U8) (NVRAM_CCONV_EXCHANGE_RATE1 + i), &g_cconv_ctx->rate[i], DS_DOUBLE, &error);

        /* Remap currency selections into IDs. */
        g_cconv_ctx->curID[i] = mmi_cconv_get_cur_id(g_cconv_ctx->curIndex[i], g_cconv_ctx->curList[i]);
        WriteValue((U8) (NVRAM_CCONV_SETTING_CURRENCY1 + i), &g_cconv_ctx->curID[i], DS_BYTE, &error);
    }

    if (rateflag == 0)
    {
        g_cconv_ctx->bRateDefined = FALSE;
    }

    g_cconv_ctx->prevSelectedLocalCurID = g_cconv_ctx->selectedLocalCurID;

    WriteValue(NVRAM_CCONV_SETTING_LOCALCURRENCY, &g_cconv_ctx->selectedLocalCurID, DS_BYTE, &error);

    if (IsScreenPresent(SCR_ID_CCONV_COMPUTE))
    {
        GoBackHistory();
    }
    else
    {
        mmi_cconv_entry_app();
    }
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_compute_item_highlight_hdlr
 * DESCRIPTION
 *  Highlight handler of inline items in compute screen.
 * PARAMETERS
 *  index       [IN]        Index of highlight item.
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_compute_item_highlight_hdlr(S32 index)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    g_cconv_ctx->hiliteItemIndex = index;
    ChangeRightSoftkey(STR_GLOBAL_BACK, IMG_GLOBAL_BACK);
    SetRightSoftkeyFunction(mmi_cconv_return_to_menu, KEY_EVENT_UP);

    ChangeLeftSoftkey(STR_CURRENCYCONV_RATE, IMG_GLOBAL_OK);
    SetLeftSoftkeyFunction(mmi_cconv_pre_entry_rate, KEY_EVENT_UP);
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_fore_select_list
 * DESCRIPTION
 *  create selection list for foreign currency.
 * PARAMETERS
 *  void
 *  index  index of selected item.(?)
 * RETURNS
 *  void
 *****************************************************************************/
S8 mmi_cconv_fore_select_list()
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    S8 i, nItems2;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    for (i = 0, nItems2 = 0; i < CCONV_MAX_RATEENTRIES; i++)
    {
        if (g_cconv_ctx->rate[i] > 0)
        {   /* if the rate is defined, add the correspoding cur into curList */
            if (g_cconv_ctx->curID[i] == g_cconv_ctx->localCurID)
            {
                continue;   /* skip the one selected in list 1 */
            }

            g_cconv_ctx->curList2[nItems2++] = curName[g_cconv_ctx->curID[i]];
        }
    }
    if (g_cconv_ctx->bRateDefined && g_cconv_ctx->selectedLocalCurID != g_cconv_ctx->localCurID)
    {
        g_cconv_ctx->curList2[nItems2++] = curName[g_cconv_ctx->selectedLocalCurID];
    }
    g_cconv_ctx->foreignCurIndex = mmi_cconv_get_cur_index(g_cconv_ctx->foreignCurID, g_cconv_ctx->curList2, nItems2);
    g_cconv_ctx->foreignCurID = mmi_cconv_get_cur_id(g_cconv_ctx->foreignCurIndex, g_cconv_ctx->curList2);

    return nItems2;
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_local_select_list
 * DESCRIPTION
 *  create selection list for local currency.
 * PARAMETERS
 *  void
 *  index  index of selected item.(?)
 * RETURNS
 *  void
 *****************************************************************************/
S8 mmi_cconv_local_select_list()
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    S8 i, nItems1;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    for (i = 0, nItems1 = 0; i < CCONV_MAX_RATEENTRIES; i++)
    {
        if (g_cconv_ctx->rate[i] > 0)
        {                                       /* if the rate is defined, add the correspoding cur into curList */
            g_cconv_ctx->curList1[nItems1++] = curName[g_cconv_ctx->curID[i]];
            g_cconv_ctx->bRateDefined = TRUE;   /* at least one exchange rate is defined for conversion. */
        }
    }
    /* add the local cur into list as well */
    if (g_cconv_ctx->bRateDefined)
    {
        g_cconv_ctx->curList1[nItems1++] = curName[g_cconv_ctx->selectedLocalCurID];
    }
    g_cconv_ctx->localCurIndex = mmi_cconv_get_cur_index(g_cconv_ctx->localCurID, g_cconv_ctx->curList1, nItems1);
    g_cconv_ctx->localCurID = mmi_cconv_get_cur_id(g_cconv_ctx->localCurIndex, g_cconv_ctx->curList1);

    return nItems1;

}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_compute_local_select_highlight_hdlr
 * DESCRIPTION
 *  Highlight handler of local currency inline selection in compute screen.
 * PARAMETERS
 *  index       [IN]        Index of selected item.
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_compute_local_select_highlight_hdlr(S32 index)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
	S8 nItems2;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (g_cconv_ctx->localCurID != mmi_cconv_get_cur_id(index, g_cconv_ctx->curList1))
    {
        g_cconv_ctx->localCurID = mmi_cconv_get_cur_id(index, g_cconv_ctx->curList1);

        memset(g_cconv_ctx->LocalBuff, 0, ENCODING_LENGTH);
        memset(g_cconv_ctx->ForeBuff, 0, ENCODING_LENGTH);

		nItems2 = mmi_cconv_fore_select_list();
		change_fixed_icontext_item(
			CCONV_CURRENCY_INLINE_FORE_SELECT,
			(UI_string_type) g_cconv_ctx->curList2[g_cconv_ctx->foreignCurIndex],
			0);
		redraw_fixed_list();

    }

    g_cconv_ctx->selectedRate = mmi_cconv_get_exchange_rate(g_cconv_ctx->localCurID, g_cconv_ctx->foreignCurID);
    return;
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_compute_fore_select_highlight_hdlr
 * DESCRIPTION
 *  Highlight handler of foreign currency inline selection in compute screen.
 * PARAMETERS
 *  index       [IN]        Index of selected item.
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_compute_fore_select_highlight_hdlr(S32 index)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    g_cconv_ctx->foreignCurID = mmi_cconv_get_cur_id(index, g_cconv_ctx->curList2);
    g_cconv_ctx->selectedRate = mmi_cconv_get_exchange_rate(g_cconv_ctx->localCurID, g_cconv_ctx->foreignCurID);

    mmi_cconv_compute_result((U8*) g_cconv_ctx->LocalBuff);
    return;
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_compute_inline_edit_highlight_hdlr
 * DESCRIPTION
 *  Highlight handler of inline edit in compute screen. (To correct LSK function)
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_compute_inline_edit_highlight_hdlr(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    DisableCategory57ScreenDone();
    SetCategory57RightSoftkeyFunctions(mmi_cconv_pre_entry_rate, mmi_cconv_return_to_menu);
    ChangeLeftSoftkey(STR_CURRENCYCONV_RATE, IMG_GLOBAL_OK);
    SetLeftSoftkeyFunction(mmi_cconv_pre_entry_rate, KEY_EVENT_UP);
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_compute_inline_edit_validation_hdlr
 * DESCRIPTION
 *  Perform currency conversion while user is typing.
 * PARAMETERS
 *  buffer          [?]         Content of inline edit.
 *  cursor          [?]         Content after the cursor position
 *  text_length     [IN]        Content length
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_compute_inline_edit_validation_hdlr(U8 *buffer, U8 *cursor, S32 text_length)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (UCS2Strcmp((S8*) buffer, g_cconv_ctx->LocalBuff) == 0)
    {
        if (text_length == 0 && (gui_strlen((UI_string_type) g_cconv_ctx->ForeBuff) > 0))
        {
            memset(g_cconv_ctx->ForeBuff, 0, 15);
            RedrawCategoryFunction();
        }
        return;
    }
    mmi_cconv_compute_result(buffer);
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_rate_item_highlight_hdlr
 * DESCRIPTION
 *  Highlight handler of inline item in exchange screen.
 * PARAMETERS
 *  index       [IN]        Index of item.
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_rate_item_highlight_hdlr(S32 index)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    g_cconv_ctx->hiliteItemIndex = index;
    ChangeRightSoftkey(STR_GLOBAL_BACK, IMG_GLOBAL_BACK);
    SetRightSoftkeyFunction(GoBackHistory, KEY_EVENT_UP);

    ChangeLeftSoftkey(STR_GLOBAL_OK, IMG_GLOBAL_OK);
    SetLeftSoftkeyFunction(mmi_cconv_rate_save_change, KEY_EVENT_UP);
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_rate_local_select_hdlr
 * DESCRIPTION
 *  Highlight handler of local currency inline selection in rate screen.
 *  reset all rates and redraw the screen
 * PARAMETERS
 *  index       [IN]        Index of selected item.
 * RETURNS
 *  void
 *****************************************************************************/
void mmi_cconv_rate_local_select_hdlr(S32 index)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    S8 i;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (g_cconv_ctx->prevSelectedLocalCurID != index)
    {
        for (i = 0; i < CCONV_MAX_CURRENCY; i++)
        {
            g_cconv_ctx->rate[i] = -1;
        }
        RedrawCategoryFunction();
    }
}


/*****************************************************************************
 * FUNCTION
 *  mmi_cconv_rate_inline_select_highlight_hdlr
 * DESCRIPTION
 *  Highlight handler of foreign currency inline selection in rate screen.