MTK中的gui_show_fixed_icontext_menuitem()函数

第一个目前可用的flag标记宏判断，!(flags & UI_MENUITEM_DISABLE_TEXT_DISPLAY)

设置字体，字体位置，

gui_set_font(&MMI_small_font);

        gui_measure_string(_text, &sw, &sh);
        if (flags & UI_MENUITEM_CENTER_TEXT_X)
        {
            old_text_x = m->text_x;
            m->text_x = (m->width >> 1) - (sw >> 1);

           
            if (m->text_x < 0)
            {
                m->text_x = 0;
            }     

            if (flags & UI_MENUITEM_CENTER_TEXT_Y)
        {
            old_text_y = m->text_y;
            m->text_y = (m->height >> 1) - (sh >> 1);
        } 

  old_text_x 保存原来的文本位置， m->text_x可设置为中间对齐．

    if (_icon != UI_NULL_IMAGE)
    {
        gui_measure_image(_icon, &icon_width, &icon_height);

        if (flags & UI_MENUITEM_CENTER_ICON_X)
        {
            old_icon_x = m->icon_x;
            m->icon_x = (m->width >> 1) - (icon_width >> 1);
        }
        if (flags & UI_MENUITEM_CENTER_ICON_Y)
        {
            old_icon_y = m->icon_y;
            m->icon_y = (m->height >> 1) - (icon_height >> 1);
        }
    }
设置图标的位置。

    text_x = m->text_x;
    text_y = m->text_y;
将m->text_x赋予text_x,以后就对text_x操作。

 if ((flags & UI_MENUITEM_STATE_FOCUSSED) && !(flags & UI_MENUITEM_DISABLE_HIGHLIGHT))
    {
        if (!(flags & UI_MENUITEM_DISABLE_BACKGROUND_ALWAYS))
        {
            f = m->focussed_filler;
        }
设置背景

        {
            text_color = m->focussed_text_color;
        }
设置字体颜色

  gui_push_clip();
进入剪裁区

 gui_set_clip(x1, y1, x2, y2);
设置剪裁区为menuitem区

   set_start_position_and_item_parameters_for_list_highlighter_effect(item, common_item_data, x1, y1);

 gui_draw_list_filled_area(x1, y1, x2, y2, f);
画背景

    if (_icon != UI_NULL_IMAGE && !((m->ext_flags & UI_MENUITEM_EXT_SHOW_IN_MARQUEE) &&

animation_flag))
    {
        if (mi->item_icon_handle != GDI_ERROR_HANDLE)
        {
            gdi_image_stop_animation(mi->item_icon_handle);
            mi->item_icon_handle = GDI_ERROR_HANDLE;
        }
        if (animation_flag)
        {
            if (MMI_current_menu_type == MATRIX_MENU || (MMI_current_menu_type ==

MATRIX_PAGE_MENU))
            {
                if (MMI_fixed_matrix_menu.flags & UI_MATRIX_MENU_FOR_MAINMENU)
                {  
                    if (!gui_main_menu_matrix_slide_is_under_control())
                    {
                        gui_show_animation_with_background_image(
                            x1 + m->icon_x,
                            y1 + m->icon_y,
                            MMI_mm_animation,
                            current_MMI_theme->matrix_main_menu_highlight_image,
                            (gdi_handle*)&mi->item_icon_handle);
                    }
                }
                else
                {               
                    gdi_image_draw_animation(
                        x1 + m->icon_x,
                        y1 + m->icon_y,
                        mi->item_icon,
                        (gdi_handle*)&mi->item_icon_handle);
                }               
            }
这块代码是显示动画的，可以先放放

       else if (MMI_current_menu_type == LIST_MENU)
        {
            S32 x_clip = 0, y_clip = 0;

            gui_push_clip();
            if (m->icon_x > 0)
            {
                x_clip = m->icon_x;
            }
            if (m->icon_y > 0)
            {
                y_clip = m->icon_y;
            }

            if (!r2lMMIFlag)
            {
                gui_set_clip(x1 + x_clip, y1 + y_clip, x1 + m->text_x - 2, y1 + m->height - 1);

                gdi_image_draw_animation_single_frame(x1 + m->icon_x, y1 + m->icon_y, (U8*) _icon, 0);
            }
            else
            {
               
                gui_set_clip(x2 - m->text_x + 2, y1 + y_clip, x2 - x_clip, y1 + m->height - 1);

                gdi_image_draw_animation_single_frame(x2 - m->icon_x - icon_width + 1, y1 + m->icon_y, (U8*) _icon, 0);
            }

            gui_pop_clip();

针对的是无动画的情形，设置画图标的区域，

    if (!(flags & UI_MENUITEM_DISABLE_TEXT_DISPLAY))
    {
        gui_push_text_clip();

                        if (f && (f->flags & UI_FILLED_AREA_BORDER))
                        {
                           
                            gui_set_text_clip(x1 + m->text_x, y1, x2 - 2 - time_w, y2);
                        }
                        else
                        {
                            gui_set_text_clip(x1 + m->text_x, y1, x2 - time_w, y2);
                        }
设置文本剪裁区，注意，使用的是gui_set_text_clip()函数。time_w为零，意义不明

                    max_text_width = x2 - (x1 + m->text_x) + 1;

                    gui_menuitem_adjust_text_clip_for_right_gap(m);               
                    if (MMI_current_menu_type == LIST_MENU)
                    {
                        max_text_width -= GUI_MENUITEM_TEXT_RIGHT_GAP;
                    }
设置文本显示区域的宽度。

           gui_move_text_cursor(x1 + text_x, y1 + text_y);

 gui_set_line_height(sh);
设置行高

       gui_set_text_color(text_color);
设置文本的颜色

                gui_list_show_text(m, mi, x1 + text_x, y1 + text_y, max_text_width - 1);
显示文本，用的是gui_list_show_text函数，可以考虑换一下

      gui_pop_text_clip();
跳出文本剪裁区

    gui_pop_clip();
跳出menuitem剪裁区

          gui_display_pop_up_description(x, y, m->width, m->height);

    g_mmi_frm_cntx.dump_screen_info.hightlight_type = MMI_SCREEN_HIGHLIGHT_NONE;
不懂

    if (!(flags & UI_MENUITEM_DISABLE_TEXT_DISPLAY))
    {
        if (flags & UI_MENUITEM_CENTER_TEXT_X)
        {
            m->text_x = old_text_x;
        }
        if (flags & UI_MENUITEM_CENTER_TEXT_Y)
        {
            m->text_y = old_text_y;
        }
    }
   
   
    if (_icon != UI_NULL_IMAGE)
    {
        if (flags & UI_MENUITEM_CENTER_ICON_X)
        {
            m->icon_x = old_icon_x;
        }
        if (flags & UI_MENUITEM_CENTER_ICON_Y)
        {
            m->icon_y = old_icon_y;
        }
    }
还原相应的坐标