gui_fixed_menus.c

MTK6226修改平台UI的文件介绍

        /* Align to the bottom */
        total_height = 0;
        if (!done)
        {
            for (i = m->last_displayed_item; (i >= 0) && (!done); i--)
            {
            #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
                if (i == m->highlighted_item)
                {
                    current_fixed_list_menuitem_display_index = -1;
                }
                else
                {
                    current_fixed_list_menuitem_display_index = i;
                }
            #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
                m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                total_height += iheight;
                if (total_height > list_height + 1)
                {
                    done = 1;
                    m->first_displayed_item = i + 1;
                }
            }
            if (!done)
            {
                m->first_displayed_item = 0;
            }
        }
    }
    else if (m->flags & UI_LIST_MENU_CENTER_HIGHLIGHTED)
    {
        m->first_displayed_item = m->highlighted_item - 1;
        if (m->first_displayed_item < 0)
        {
            m->first_displayed_item = m->n_items - 1;
        }
        m->last_displayed_item = m->highlighted_item + 1;
        if (m->last_displayed_item >= m->n_items)
        {
            m->last_displayed_item = 0;
        }
    }
    else
    {
        if (m->highlighted_item < m->first_displayed_item)
        {
            m->first_displayed_item = m->highlighted_item;
        }
        else if (m->highlighted_item > m->last_displayed_item)
        {
            U8 done = 0;
            S32 total_height = 0, i;
            S32 list_height = m->height;

            m->last_displayed_item = m->highlighted_item;
            for (i = m->last_displayed_item; i >= 0 && (!done); i--)
            {
            #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
                if (i == m->highlighted_item)
                {
                    current_fixed_list_menuitem_display_index = -1;
                }
                else
                {
                    current_fixed_list_menuitem_display_index = i;
                }
            #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
                m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                total_height += iheight;
                if (total_height > list_height)
                {
                    done = 1;
                    m->first_displayed_item = i + 1;
                }
            }
        }
        else
        {
            U8 done = 0;
            S32 total_height = 0, i;
            S32 list_height = m->height;

            for (i = m->first_displayed_item; i < m->n_items && (!done); i++)
            {
            #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
                if (i == m->highlighted_item)
                {
                    current_fixed_list_menuitem_display_index = -1;
                }
                else
                {
                    current_fixed_list_menuitem_display_index = i;
                }
            #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
                m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                total_height += iheight;
                if (total_height > list_height)
                {
                    done = 1;
                    m->last_displayed_item = i - 1;
                }
            }
            if (!done)
            {
                total_height = 0;
                for (i = m->n_items - 1; (i >= 0) && (!done); i--)
                {
                #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
                    if (i == m->highlighted_item)
                    {
                        current_fixed_list_menuitem_display_index = -1;
                    }
                    else
                    {
                        current_fixed_list_menuitem_display_index = i;
                    }
                #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
                    m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                    total_height += iheight;
                    if (total_height > list_height)
                    {
                        done = 1;
                        m->first_displayed_item = i + 1;
                        m->last_displayed_item = m->n_items - 1;
                        break;
                    }
                }
                if (!done)
                {
                    m->first_displayed_item = 0;
                    m->last_displayed_item = m->n_items - 1;
                }
            }
            if (m->highlighted_item > m->last_displayed_item)
            {
                done = 0;
                total_height = 0;
                m->last_displayed_item = m->highlighted_item;
                for (i = m->last_displayed_item; i >= 0 && (!done); i--)
                {
                #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
                    if (i == m->highlighted_item)
                    {
                        current_fixed_list_menuitem_display_index = -1;
                    }
                    else
                    {
                        current_fixed_list_menuitem_display_index = i;
                    }
                #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
                    m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                    total_height += iheight;
                    if (total_height > list_height)
                    {
                        done = 1;
                        m->first_displayed_item = i + 1;
                    }
                }
            }
        }
    }

    /* Located after resized */
    m->resized_before_locate = MMI_FALSE;
}


/*****************************************************************************
 * FUNCTION
 *  gui_fixed_list_menu_locate_previous_item
 * DESCRIPTION
 *  
 * PARAMETERS
 *  m       [?]     
 * RETURNS
 *  void
 *****************************************************************************/
void gui_fixed_list_menu_locate_previous_item(fixed_list_menu *m)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (m->flags & UI_LIST_MENU_CENTER_HIGHLIGHTED)
    {
        if (m->highlighted_item == 0)
        {
            m->first_displayed_item = m->n_items - 1;
            m->last_displayed_item = 1;
        }
        else
        {
            m->first_displayed_item = m->highlighted_item - 1;
            if (m->first_displayed_item < 0)
            {
                m->first_displayed_item = m->n_items - 1;
            }
            m->last_displayed_item = m->highlighted_item + 1;
            if (m->last_displayed_item > m->n_items - 1)
            {
                m->last_displayed_item = 0;
            }
        }
    }
    else
    {
        if (m->highlighted_item < m->first_displayed_item)
        {
            m->first_displayed_item = m->highlighted_item;
        }
        else if (m->resized_before_locate)
        {
            gui_fixed_list_menu_locate_highlighted_item(m);
        }
    #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
        else if (m->highlighted_item == m->last_displayed_item - 1)
        {
            S32 iwidth, iheight;
            U8 done = 0;
            S32 total_height = 0, i;
            S32 list_height = m->height;

            current_fixed_list_menuitem_display_index = -1;
            for (i = m->last_displayed_item; i >= 0 && (!done); i--)
            {
                if (i == m->highlighted_item)
                {
                    current_fixed_list_menuitem_display_index = -1;
                }
                else
                {
                    current_fixed_list_menuitem_display_index = i;
                }
                m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                total_height += iheight;
                if (total_height > list_height + 1)
                {
                    done = 1;
                    m->first_displayed_item = i + 1;
                }
            }
        }
    #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
    }

    /* Located after resized */
    m->resized_before_locate = MMI_FALSE;
}


/*****************************************************************************
 * FUNCTION
 *  gui_fixed_list_menu_locate_next_item
 * DESCRIPTION
 *  
 * PARAMETERS
 *  m       [?]     
 * RETURNS
 *  void
 *****************************************************************************/
void gui_fixed_list_menu_locate_next_item(fixed_list_menu *m)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    S32 iwidth, iheight;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (m->flags & UI_LIST_MENU_CENTER_HIGHLIGHTED)
    {
        m->first_displayed_item = m->highlighted_item - 1;
        if (m->first_displayed_item < 0)
        {
            m->first_displayed_item = m->n_items - 1;
        }
        m->last_displayed_item = m->highlighted_item + 1;
        if (m->last_displayed_item >= m->n_items)
        {
            m->last_displayed_item = 0;
        }
    }
    else
    {
    #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
        if (m->highlighted_item >= m->last_displayed_item)
    #else 
        if (m->highlighted_item > m->last_displayed_item)
    #endif 
        {
            U8 done = 0;
            S32 total_height = 0, i;

            S32 list_height = m->height;

            m->last_displayed_item = m->highlighted_item;
            for (i = m->last_displayed_item; i >= 0 && (!done); i--)
            {
            #if defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__)
                if (i == m->highlighted_item)
                {
                    current_fixed_list_menuitem_display_index = -1;
                }
                else
                {
                    current_fixed_list_menuitem_display_index = i;
                }
            #endif /* defined(__MMI_UI_TWO_LINE_MENUITEM_STYLES__) || defined(__MMI_UI_HINTS_IN_MENUITEM__) */ 
                m->item_measure_function(m->items[i], m->common_item_data, &iwidth, &iheight);
                total_height += iheight;
                if (total_height > list_height + 1)
                {
                    done = 1;
                    m->first_displayed_item = i + 1;
                }
            }
        }
        else if (m->resized_before_locate)
        {
            gui_fixed_list_menu_locate_highlighted_item(m);
        }
    }

    /* Located after resized */
    m->resized_before_locate = MMI_FALSE;
}


/*****************************************************************************
 * FUNCTION
 *  switch_fixed_list_highlighted_item
 * DESCRIPTION
 *  
 * PARAMETERS
 *  m                           [?]         
 *  last_highlighted_item       [IN]        
 * RETURNS
 *  void
 *****************************************************************************/
static void switch_fixed_list_highlighted_item(fixed_list_menu *m, S32 last_highlighted_item)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (last_highlighted_item != m->highlighted_item)
    {
        if ((last_highlighted_item >= 0) && (last_highlighted_item < m->n_items))
        {
            m->item_remove_highlight_function(m->items[last_highlighted_item], m->common_item_data);
        }
        if ((m->highlighted_item >= 0) && (m->highlighted_item < m->n_items))
        {
            m->item_highlight_function(m->items[m->highlighted_item], m->common_item_data);
        }
        m->item_unhighlighted(last_highlighted_item);
    #ifdef __MMI_TOUCH_SCREEN__
        m->pen_event_current_selected_callback_function = m->pen_event_default_selected_callback_function;
    #endif 
        m->item_highlighted(m->highlighted_item);
    }
}


/*****************************************************************************
 * FUNCTION
 *  gui_fixed_list_menu_goto_item
 * DESCRIPTION
 *  Highlights a particular item
 *  
 *  The fixed list is not redrawn
 * PARAMETERS
 *  m       [IN]        Is the fixed list menu object
 *  i       [IN]        Is the index of the item to be highlighted (zero based)
 * RETURNS