; ***************************************************************************
; copyright   : (C) 2026 by Martin Preuss
; email       : martin@libchipcard.de
;
; ***************************************************************************
; * This file is part of the project "AqHome".                              *
; * Please see toplevel file COPYING of that project for license details.   *
; ***************************************************************************

#ifndef AQH_AVR_GUI2_LAYOUT_ASM
#define AQH_AVR_GUI2_LAYOUT_ASM


; ***************************************************************************
; defines




; ***************************************************************************
; code

.cseg



; ---------------------------------------------------------------------------
; @routine Layout_SetDefaultWidths
;
; Set defaultWidth in WIDGET_OFFS_TMP_LO/HI
;
; @param Y pointer to widget
; @clobbers any, !Y

Layout_SetDefaultWidths:
  push yl
    push yh
      bigcall OBJ_GetFirstChild
Layout_SetDefaultWidths_loop:
        brcc Layout_SetDefaultWidths_ret
        mov yl, r18
        mov yh, r19
        bigcall Widget_GetDefaultWidth
        std Y+WIDGET_OFFS_TMP_LO, r18
        std Y+WIDGET_OFFS_TMP_HI, r19
        rcall OBJ_GetNext
      rjmp Layout_SetDefaultWidths_loop
Layout_SetDefaultWidths_ret:
    pop yh
  pop yl
  ret
; @end



; ---------------------------------------------------------------------------
; @routine Layout_SetDefaultHeights
;
; @param Y pointer to widget
; @clobbers any, !Y

Layout_SetDefaultHeights:
  push yl
    push yh
      bigcall OBJ_GetFirstChild
Layout_SetDefaultHeights_loop:
        brcc Layout_SetDefaultHeights_ret
        mov yl, r18
        mov yh, r19
        bigcall Widget_GetDefaultHeight
        std Y+WIDGET_OFFS_TMP_LO, r18
        std Y+WIDGET_OFFS_TMP_HI, r19
        rcall OBJ_GetNext
      rjmp Layout_SetDefaultHeights_loop
Layout_SetDefaultHeights_ret:
    pop yh
  pop yl
  ret
; @end



; ---------------------------------------------------------------------------
; @routine Layout_SumTmpValues
;
; @param Y pointer to widget
; @return r19:r18 total width of all child widgets plus space between
; @clobbers r16, r17, r18, r19, r20, r21, r22, r23, Z

Layout_SumTmpValues:
  ldd zl, Y+WIDGET_OFFS_STYLE_LO
  ldd zh, Y+WIDGET_OFFS_STYLE_HI

  ; get spacing
  adiw zh:zl, WIDGET_STYLE_OFFS_SPACING
  lpm r22, Z
  sbiw zh:zl, WIDGET_STYLE_OFFS_SPACING
  ; get outer border
  adiw zh:zl, WIDGET_STYLE_OFFS_OUTERBORDERSIZE
  lpm r23, Z
  sbiw zh:zl, WIDGET_STYLE_OFFS_OUTERBORDERSIZE
  ; start adding
  clr r20
  clr r21
  push yl
    push yh
      bigcall OBJ_GetFirstChild
Layout_SumTmpValues_loop:
        brcc Layout_SumTmpValues_loopEnd
        mov yl, r18
        mov yh, r19

        ldd r18, Y+WIDGET_OFFS_TMP_LO
        ldd r19, Y+WIDGET_OFFS_TMP_HI
        add r20, r18    ; add widget size
        adc r21, r19
        add r20, r22    ; add spacing
        adc r20, r22
        sub r20, r22
        rcall OBJ_GetNext
      rjmp Layout_SumTmpValues_loop
Layout_SumTmpValues_loopEnd:
    mov r16, r20
    or r16, r21
    breq Layout_SumTmpValues_done
    sub r20, r22   ; sub last spacing
    sbc r21, r22
    add r21, r22
    add r20, r23   ; add outer border (begin)
    adc r21, r23
    sub r21, r23
    add r20, r23   ; add outer border (end)
    adc r21, r23
    sub r21, r23
Layout_SumTmpValues_done:
    mov r18, r20
    mov r19, r21
    pop yh
  pop yl
  ret
; @end



; ---------------------------------------------------------------------------
; @routine Layout_GetMaxTmp
;
; @param Y pointer to widget
; @return r19:r18 maximum value in WIDGET_OFFS_TMP_LO/HI of children
; @clobbers any, !Y

Layout_GetMaxTmp:
  clr r20
  clr r21
  push yl
    push yh
      bigcall OBJ_GetFirstChild
Layout_GetMaxTmp_loop:
        brcc Layout_GetMaxTmp_ret
        mov yl, r18
        mov yh, r19
        ldd r18, Y+WIDGET_OFFS_TMP_LO
        ldd r19, Y+WIDGET_OFFS_TMP_HI
        ; max
        cp r20, r18
        cpc r21, r19
        brcc Layout_GetMaxTmp_next
        mov r20, r18
        mov r21, r19
Layout_GetMaxTmp_next:
        rcall OBJ_GetNext
      rjmp Layout_GetMaxTmp_loop
Layout_GetMaxTmp_ret:
      mov r18, r20
      mov r19, r21
    pop yh
  pop yl
  ret
; @end



; ---------------------------------------------------------------------------
; @routine Layout_AddToTmpOfFillXChildren
;
; @param Y pointer to widget
; @param R21:R20 value to add to tmp value of expandable widgets
; @param r22 mask for OBJECT_OFFS_OPTS_LO (e.g. 1<<WIDGET_OPTSLO_FILLX_BIT)

Layout_AddToTmpOfFillXChildren:
  clr r16
  push yl
    push yh
      bigcall OBJ_GetFirstChild
Layout_AddToTmpOfFillXChildren_loop:
        brcc Layout_AddToTmpOfFillXChildren_done
        mov yl, r18
        mov yh, r19
        ldd r17, Y+OBJECT_OFFS_OPTS_LO
        and r17, r22
        breq Layout_AddToTmpOfFillXChildren_next
        ldd r16, Y+WIDGET_OFFS_TMP_LO
        ldd r17, Y+WIDGET_OFFS_TMP_HI
        add r16, r20
        adc r17, r21
        std Y+WIDGET_OFFS_TMP_LO, r16
        std Y+WIDGET_OFFS_TMP_HI, r17
Layout_AddToTmpOfFillXChildren_next:
        rcall OBJ_GetNext
      rjmp Layout_AddToTmpOfFillXChildren_loop
Layout_AddToTmpOfFillXChildren_done:
    pop yh
  pop yl
  ret
; @end



; ---------------------------------------------------------------------------
; @routine LayoutCountExpandableChildren
;
; @param Y pointer to widget
; @param r22 mask for OBJECT_OFFS_OPTS_LO (e.g. 1<<WIDGET_OPTSLO_FILLX_BIT)
; @return r16 number of children with opt WIDGET_OPTSLO_FILLX_BIT
; @clobbers r17, r18, r19

LayoutCountExpandableChildren:
  clr r16
  push yl
    push yh
      bigcall OBJ_GetFirstChild
LayoutCountExpandableChildren_loop:
        brcc LayoutCountExpandableChildren_done
        mov yl, r18
        mov yh, r19
        ldd r17, Y+OBJECT_OFFS_OPTS_LO
        and r17, r22
        breq LayoutCountExpandableChildren_next
        inc r16
LayoutCountExpandableChildren_next:
        rcall OBJ_GetNext
      rjmp LayoutCountExpandableChildren_loop
LayoutCountExpandableChildren_done:
    pop yh
  pop yl
  ret
; @end






#endif