SAP ABAP - Multiple Header ALV List

REPORT ZALV_LIST_MULTIHEADER NO STANDARD PAGE HEADING.
TYPE-POOLS: slis.
DATA :t_fieldcat TYPE slis_t_fieldcat_alv,
      w_fieldcat TYPE slis_fieldcat_alv,
      layout     TYPE slis_layout_alv,
      t_sort     TYPE slis_t_sortinfo_alv,
      t_event    TYPE slis_t_event WITH HEADER LINE,
      d_repid    LIKE sy-repid,
      d_layout   TYPE slis_layout_alv,
      key        TYPE slis_keyinfo_alv.
TYPES : BEGIN OF ty_data,
          store(50),
          price      TYPE dmbtr,
          quantity   TYPE p,
          total      TYPE dmbtr, "(10) TYPE p DECIMALS 2,
          price2     TYPE dmbtr,
          quantity2  TYPE p,
          total2     TYPE dmbtr, "(10) TYPE p DECIMALS 2,
          curr       TYPE waers,
        END OF ty_data.
DATA : t_data TYPE ty_data OCCURS 0 WITH HEADER LINE.

START-OF-SELECTION.
  PERFORM f_process_data.
  PERFORM f_write_data.
*&---------------------------------------------------------------------*
*&      Form  F_PROCESS_DATA
*&---------------------------------------------------------------------*
FORM f_process_data .
*fill data t_data
  t_data-store = 'Ayam Kampung'.
  t_data-quantity = 30.
  t_data-price = 50000.
  t_data-total = t_data-quantity * t_data-price.
  t_data-quantity2 = 525.
  t_data-price2    = 55000.
  t_data-total2    = t_data-quantity2 * t_data-price2.
  t_data-curr = 'IDR'.
  APPEND t_data.
  t_data-store = 'Ayam Boiler'.
  t_data-quantity = 10.
  t_data-price = 50000.
  t_data-total = t_data-quantity * t_data-price.
  t_data-quantity2 = 55.
  t_data-price2    = 55000.
  t_data-total2    = t_data-quantity2 * t_data-price2.
  t_data-curr = 'IDR'.
  APPEND t_data.
ENDFORM.                    " F_PROCESS_DATA
*&---------------------------------------------------------------------*
*&      Form  F_WRITE_DATA
*&---------------------------------------------------------------------*
FORM f_write_data .
  PERFORM field_catalog.
  PERFORM build_layout.
  PERFORM build_event.
  d_repid = sy-repid.
  CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
    EXPORTING
      i_callback_program = d_repid
      is_layout          = d_layout
      i_bypassing_buffer = 'X'
      it_fieldcat        = t_fieldcat
      i_default          = 'X'
      i_save             = 'A'
      it_events          = t_event[]
      it_sort            = t_sort
    TABLES
      t_outtab           = t_data[]
    EXCEPTIONS
      program_error      = 1
      OTHERS             = 2.
ENDFORM.                    " F_WRITE_DATA
*&---------------------------------------------------------------------*
*&      Form  FIELD_CATALOG
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
FORM field_catalog .
  PERFORM f_fieldcats USING :
        'STORE'  'STORE'       '50' ''  ''     ''  ''  '',
        'QUANTITY' 'QUANTITY'  '15' ''  ''     ''  ''  '',
        'PRICE'  'PRICE'       '15' ''  'CURR'     ''  ''  '',
        'TOTAL'  'TOTAL'       '20' '' 'CURR'     ''  ''  '',
        'QUANTITY2' 'QUANTITY2'  '15' ''  ''     ''  ''  '',
        'PRICE2'  'PRICE2'       '15' ''  'CURR'     ''  ''  '',
        'TOTAL2'  'TOTAL2'       '20' '' 'CURR'     ''  ''  ''.
ENDFORM.                    " FIELD_CATALOG
*&---------------------------------------------------------------------*
*&      Form  F_FIELDCATS
*&---------------------------------------------------------------------*
FORM f_fieldcats USING fu_fname
      fu_text
      fu_len
      fu_sum
      fu_curr
      fu_spot
      fu_out
      fu_sign.
  DATA : lt_fieldcat TYPE slis_fieldcat_alv.
  lt_fieldcat-fieldname      = fu_fname.  "field name
  lt_fieldcat-seltext_l      = lt_fieldcat-seltext_m =  "text
  lt_fieldcat-seltext_s      = fu_text.
  lt_fieldcat-reptext_ddic   = fu_text.
  lt_fieldcat-outputlen      = fu_len.  "text length
  lt_fieldcat-do_sum         = fu_sum.  "summing
  lt_fieldcat-cfieldname     = fu_curr. "currency
  lt_fieldcat-hotspot        = fu_spot.
  lt_fieldcat-no_out         = fu_out.
  lt_fieldcat-no_sign        = fu_sign.
  APPEND lt_fieldcat TO t_fieldcat.
  CLEAR: lt_fieldcat.
ENDFORM.                    " F_FIELDCATS
*&---------------------------------------------------------------------*
*&      Form  BUILD_LAYOUT
*&---------------------------------------------------------------------*
FORM build_layout .
  d_layout-colwidth_optimize = ''.
  d_layout-zebra = 'X'.
  d_layout-no_colhead         = 'X'. "space.
ENDFORM.                    " BUILD_LAYOUT
*&---------------------------------------------------------------------*
*&      Form  BUILD_EVENT
*&---------------------------------------------------------------------*
FORM build_event .
  t_event-form = 'TOP_PAGE'.
  t_event-name = 'TOP_OF_PAGE'.
  APPEND t_event.
ENDFORM.                    " BUILD_EVENT
*&---------------------------------------------------------------------*
*&      Form  top_of_page
*&---------------------------------------------------------------------*
FORM top_page.
  ULINE (295) .
  FORMAT COLOR 1 .
  WRITE: / sy-vline, (48) '' CENTERED,
  sy-vline, (50) 'Current Period' CENTERED,
  sy-vline, (50) 'Ytd Period' CENTERED,
  sy-vline.
*  ULINE (295) .
  WRITE: / sy-vline, (48) ' ' CENTERED,
  sy-vline, (13) 'Quantity' CENTERED,
  sy-vline, (13) 'per Unit' CENTERED,
  sy-vline, (18) 'Total' CENTERED,
  sy-vline, (13) 'Quantity' CENTERED,
  sy-vline, (13) 'per Unit' CENTERED,
  sy-vline, (18) 'Total' CENTERED,
  sy-vline.
*  ULINE (295) .
  FORMAT COLOR OFF.
ENDFORM.                    "top_of_page