Files
aqhomecontrol/avr/modules/lcd2/win/w_layout.asm
2025-11-03 17:23:40 +01:00

771 lines
22 KiB
NASM

; ***************************************************************************
; copyright : (C) 2025 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. *
; ***************************************************************************
; ***************************************************************************
; defs
.equ WID_WIDGET_INTER_BORDER = 2
; ***************************************************************************
; code
.cseg
; ---------------------------------------------------------------------------
; @routine WID_Widget_new @global
;
; @param Y pointer to window SRAM
; @param X pointer to parent
; @param r18 WID_OFFS_OPTIONS1
; @param r19 WID_OFFS_OPTIONS2
WID_Widget_Init:
push r18
push r19
push xl
push xh
ldi zl, LOW(WID_Widget_Handler)
ldi zh, HIGH(WID_Widget_Handler)
clr r17
rcall OBJ_Init
pop xh
pop xl
pop r19
pop r18
std Y+WID_OFFS_OPTIONS1, r18
std Y+WID_OFFS_OPTIONS2, r19
mov r16, xl
or r16, xh
breq WID_Widget_noParent
; copy defaults from parent
adiw xh:xl, WID_OFFS_BG_COL_LO
ld r16, X+ ; WID_OFFS_BG_COL_LO
std Y+WID_OFFS_BG_COL_LO, r16
ld r16, X+ ; WID_OFFS_BG_COL_HI
std Y+WID_OFFS_BG_COL_HI, r16
ld r16, X+ ; WID_OFFS_FG_COL_LO
std Y+WID_OFFS_FG_COL_LO, r16
ld r16, X+ ; WID_OFFS_FG_COL_HI
std Y+WID_OFFS_FG_COL_HI, r16
ld r16, X+ ; WID_OFFS_FONT_LO
std Y+WID_OFFS_FONT_LO, r16
ld r16, X+ ; WID_OFFS_FONT_HI
std Y+WID_OFFS_FONT_HI, r16
rjmp WID_Widget_end
WID_Widget_noParent: ; preset without parent
clr r16
std Y+WID_OFFS_FONT_LO, r16
std Y+WID_OFFS_FONT_HI, r16
std Y+WID_OFFS_FG_COL_LO, r16 ; foreground black
std Y+WID_OFFS_FG_COL_HI, r16
dec r16
std Y+WID_OFFS_BG_COL_LO, r16 ; background white
std Y+WID_OFFS_BG_COL_HI, r16
ldi r16, 2 ; default borders
std Y+WID_OFFS_BORDER_TOP, r16
std Y+WID_OFFS_BORDER_BOT, r16
std Y+WID_OFFS_BORDER_LEFT, r16
std Y+WID_OFFS_BORDER_RIGHT, r16
WID_Widget_end:
ret
; @end
; ---------------------------------------------------------------------------
; @routine WID_Widget_Handler
;
; Signal handler for an object. A signal can have up to 3 parameters
; conveyed in registers R18, R19 and X.
;
; @param Y pointer to object SRAM
; @param r16 signal
; @param R18 1st param
; @param R19 2nd param
; @param X 3rd param
; @clobbers any, !Y
WID_Widget_Handler:
cpi r16, WID_SIGNAL_GETMINWIDTH
breq WID_Widget_Handler_getMinWidth
cpi r16, WID_SIGNAL_GETMINHEIGHT
breq WID_Widget_Handler_getMinHeight
cpi r16, WID_SIGNAL_LAYOUT
breq WID_Widget_Handler_layout
cpi r16, WID_SIGNAL_DRAW
breq WID_Widget_Handler_draw
; for now just forward signal to all children
WID_Widget_Handler_forward:
rcall OBJ_ForwardSignalToChildren
ret
WID_Widget_Handler_getMinWidth:
rjmp widgetGetMinWidth
WID_Widget_Handler_getMinHeight:
rjmp widgetGetMinHeight
WID_Widget_Handler_layout:
rjmp widgetLayout
WID_Widget_Handler_draw:
rjmp wDraw
; @end
wDraw:
ldd r16, Y+OBJ_OFFS_OPTIONS
sbrs r16, WID_OPTIONS0_BIT_VISIBLE ; only draw visible widgets
rjmp wDraw_ret
cbr r16, (1<<WID_OPTIONS0_BIT_DIRTY)
std Y+OBJ_OFFS_OPTIONS, r16
; fill window background
ldd r2, Y+WID_OFFS_BG_COL_LO
ldd r3, Y+WID_OFFS_BG_COL_HI
ldd r4, Y+WID_OFFS_ABS_X_LO
ldd r5, Y+WID_OFFS_ABS_X_HI
ldd r6, Y+WID_OFFS_ABS_Y_LO
ldd r7, Y+WID_OFFS_ABS_Y_HI
ldd r8, Y+WID_OFFS_WIDTH_LO
ldd r9, Y+WID_OFFS_WIDTH_HI
ldd r10, Y+WID_OFFS_HEIGHT_LO
ldd r11, Y+WID_OFFS_HEIGHT_HI
bigcall ILI9341_FillRect
wDraw_ret:
ret
; @end
widgetLayout:
rjmp wVLayout
wVLayout:
rcall wSetChildrenWidthsFromMinWidths
rcall wSetChildrenHeightsFromMinHeights
; count number of expandable children
ldi r16, (1<<WID_OPTIONS1_BIT_STRETCH_Y) ; value
ldi r17, (1<<WID_OPTIONS1_BIT_STRETCH_Y) ; mask
rcall widgetCountVisibleChildrenWithOptions1 ; r18=number of matching visible children (r24, r25, X)
tst r18
breq wVLayout_Ydone ; no expandable children, nothing to distribute
; determine full height needed by all children
push r18 ; number of visible expandable child widgets
clr r17 ; mask=0 -> count all visible children
rcall wGetSumOfMatchingVisibleChildrenHeights ; r19:r18=sum of all children heights
pop r22
clr r23 ; r23:r22=number of visible expandable children
; calculate number of bytes to add to each expandable child widget
ldd r20, Y+WID_OFFS_HEIGHT_LO ; total height
ldd r21, Y+WID_OFFS_HEIGHT_HI
clr r16
ldd r17, Y+WID_OFFS_BORDER_TOP ; subtract top border
sub r20, r17
sbc r21, r16
brcs wVLayout_heightTooSmall ; jmp if too small
ldd r17, Y+WID_OFFS_BORDER_BOT ; subtract bottom border
sub r20, r17
sbc r21, r16
brcs wVLayout_heightTooSmall ; jmp if too small
sub r20, r18 ; r21:r20 = HEIGHT-SUM_OF_VIS_CHILDREN_HEIGHTS
sbc r21, r19
brcc wVLayout_heightTooSmall
breq wVLayout_yDone ; nothing to distribute
bigcall Utils_Divu16_16_16 ; r17:r16 = r21:r20 / r23:r22
; add additional pixel to heights of expandable child widgets
rcall wAddToHeightsOfExpandableVisibleChildren
wVLayout_yDone:
rcall wSetRelYFromHeightInVisibleChildren
rcall wAlignChildrenHorizontally
; rcall wSetAbsoluteCoords call in GUI loop after calling layout on all widgets
wVLayout_heightTooSmall:
; TODO: how to handle this case?
ret
; @end
wSetAbsoluteCoords:
push yl
push yh
wSetAbsoluteCoords_loop:
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq wSetAbsoluteCoords_nextSibling
push yl
push yh
bigcall Tree_GetParentObject
clr r18
clr r19
clr r20
clr r21
mov r17, xl
or r17, xh
breq wSetAbsoluteCoords_r1820set
mov yl, xl
mov yh, xh
ldd r18, Y+WID_OFFS_ABS_X_LO
ldd r19, Y+WID_OFFS_ABS_X_HI
ldd r20, Y+WID_OFFS_ABS_Y_LO
ldd r21, Y+WID_OFFS_ABS_Y_HI
wSetAbsoluteCoords_r1820set:
pop yh
pop yl
; handle X
ldd r16, Y+WID_OFFS_REL_X_LO
ldd r17, Y+WID_OFFS_REL_X_HI
add r16, r18
adc r17, r19
std Y+WID_OFFS_ABS_X_LO, r16
std Y+WID_OFFS_ABS_X_HI, r17
; handle Y
ldd r16, Y+WID_OFFS_REL_Y_LO
ldd r17, Y+WID_OFFS_REL_Y_HI
add r16, r20
adc r17, r21
std Y+WID_OFFS_ABS_Y_LO, r16
std Y+WID_OFFS_ABS_Y_HI, r17
bigcall Tree_GetObjectBelow
rjmp wSetAbsoluteCoords_loopEnd
wSetAbsoluteCoords_nextSibling:
bigcall Tree_GetNextSibling
wSetAbsoluteCoords_loopEnd:
mov r17, xl
or r17, xh
breq wSetAbsoluteCoords_end
mov yl, xl
mov yh, xh
rjmp wSetAbsoluteCoords_loop
wSetAbsoluteCoords_end:
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wAlignChildrenHorizontally
;
; Horizontally align children within the width of the parent widget.
; Only changes Y+WID_OFFS_REL_X_LO/HI.
;
; @param Y pointer to object SRAM
; @clobbers r16, r17, r18, r19, r24, r25
wAlignChildrenHorizontally:
push yl
push yh
ldd r24, Y+WID_OFFS_WIDTH_LO ; parent width
ldd r25, Y+WID_OFFS_WIDTH_HI
ldd r19, Y+WID_OFFS_BORDER_LEFT ; subtract left border
mov r16, r19
clr r17
sub r24, r16
sbc r25, r17
ldd r16, Y+WID_OFFS_BORDER_RIGHT ; subtract right border
sub r24, r16
sbc r25, r17 ; r25:r24=parent width minus lateral borders, r19=left border
rcall Tree_GetFirstChildObject ; (none)
wAlignChildrenHorizontally_loop:
mov r17, xl
or r17, xh
breq wAlignChildrenHorizontally_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq wAlignChildrenHorizontally_loopNext
push r24
push r25
push r19
rcall wAlignHorizontally
pop r19
add r24, r19
adc r25, r19
sub r25, r19
std Y+WID_OFFS_REL_X_LO, r24
std Y+WID_OFFS_REL_X_HI, r25
pop r25
pop r24
wAlignChildrenHorizontally_loopNext:
rcall Tree_GetNextSibling ; (none)
rjmp wAlignChildrenHorizontally_loop
wAlignChildrenHorizontally_loopEnd:
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wAlignHorizontally
;
; @param r25:r24 parent width minus lateral borders
; @return r25:r24 proposed X position relative to parent
; @clobbers r16, r17
wAlignHorizontally:
ldd r16, Y+WID_OFFS_OPTIONS1
sbrc r16, WID_OPTIONS1_BIT_STRETCH_X
rjmp wAlignHorizontally_stretch
andi r16, (WID_OPTIONS1_BIT_HALIGN0 | WID_OPTIONS1_BIT_HALIGN1)
cpi r16, (0<<WID_OPTIONS1_BIT_HALIGN1) | (0<<WID_OPTIONS1_BIT_HALIGN0)
breq wAlignHorizontally_left
cpi r16, (0<<WID_OPTIONS1_BIT_HALIGN1) | (1<<WID_OPTIONS1_BIT_HALIGN0)
breq wAlignHorizontally_right
wAlignHorizontally_center:
ldd r16, Y+WID_OFFS_WIDTH_LO
ldd r17, Y+WID_OFFS_WIDTH_HI
sub r24, r16
sbc r25, r17
lsr r25
ror r24
ret
wAlignHorizontally_left:
clr r24
clr r25
ret
wAlignHorizontally_right:
ldd r16, Y+WID_OFFS_WIDTH_LO
ldd r17, Y+WID_OFFS_WIDTH_HI
sub r24, r16
sbc r25, r17
wAlignHorizontally_stretch:
ret
; @end
; ---------------------------------------------------------------------------
; @routine wSetRelYFromHeightInVisibleChildren
;
; @param Y pointer to object SRAM
; @clobbers r17, r18, r19, r24, r25, X
wSetRelYFromHeightInVisibleChildren:
push yl
push yh
ldd r24, Y+WID_OFFS_BORDER_TOP
clr r25
rcall Tree_GetFirstChildObject ; (none)
wSetRelYFromHeightInVisibleChildren_loop:
mov r17, xl
or r17, xh
breq wSetRelYFromHeightInVisibleChildren_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq wSetRelYFromHeightInVisibleChildren_loopNext
std Y+WID_OFFS_REL_Y_LO, r24
std Y+WID_OFFS_REL_Y_HI, r25
ldd r18, Y+WID_OFFS_WIDTH_LO
ldd r19, Y+WID_OFFS_WIDTH_HI
add r24, r18 ; TODO: handle carry later
adc r25, r19
adiw r25:r24, WID_WIDGET_INTER_BORDER
wSetRelYFromHeightInVisibleChildren_loopNext:
rcall Tree_GetNextSibling ; (none)
rjmp wSetRelYFromHeightInVisibleChildren_loop
wSetRelYFromHeightInVisibleChildren_loopEnd:
mov r18, r24
mov r19, r25
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine widgetGetMinWidth
;
; @return r19:r18 minimum width of widget
; @clobbers any, !Y
widgetGetMinWidth:
ldi r16, WID_SIGNAL_GETMINWIDTH
rjmp widgetGetLargestChildMinSize
; @end
; ---------------------------------------------------------------------------
; @routine widgetGetMinHeight
;
; @return r19:r18 minimum height of widget
; @clobbers any, !Y
widgetGetMinHeight:
ldi r16, WID_SIGNAL_GETMINHEIGHT
rjmp widgetSumOfChildrenMinSize
; @end
; ---------------------------------------------------------------------------
; @routine widgetSumOfChildrenMinSize
;
; @param r16 signal to send (WID_SIGNAL_GETMINWIDTH, WID_SIGNAL_GETMINHEIGHT)
; @return r19:r18 minimum width or height of widget
; @clobbers any, !Y
widgetSumOfChildrenMinSize:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
clr r24
clr r25
widgetSumOfChildrenMinSize_loop:
mov r17, xl
or r17, xh
breq widgetSumOfChildrenMinSize_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq widgetSumOfChildrenMinSize_loopNext
push r16
push r24
push r25
ldi r18, 1 ; default value for when the signal is not handled
ldi r19, 0 ; default value for when the signal is not handled
rcall OBJ_Handler ; ask child for its minimum size
pop r25
pop r24
pop r16
add r24, r18 ; TODO: handle carry later
adc r25, r19
adiw r25:r24, WID_WIDGET_INTER_BORDER
widgetSumOfChildrenMinSize_loopNext:
rcall Tree_GetNextSibling ; (none)
rjmp widgetSumOfChildrenMinSize_loop
widgetSumOfChildrenMinSize_loopEnd:
mov r18, r24
mov r19, r25
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine widgetGetLargestChildMinSize
;
; @param r16 signal to send (WID_SIGNAL_GETMINWIDTH, WID_SIGNAL_GETMINHEIGHT)
; @return r19:r18 minimum width or height of widget
; @clobbers any, !Y
widgetGetLargestChildMinSize:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
clr r24
clr r25
widgetGetLargestChildMinSize_loop:
mov r17, xl
or r17, xh
breq widgetGetLargestChildMinSize_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq widgetGetLargestChildMinSize_loopNext
push r16
push r24
push r25
ldi r18, 1 ; default value for when the signal is not handled
ldi r19, 0 ; default value for when the signal is not handled
rcall OBJ_Handler ; ask child for its minimum size
pop r25
pop r24
pop r16
sub r24, r18
sbc r25, r19
add r24, r18
adc r25, r19
brcc widgetGetLargestChildMinSize_loopNext
mov r24, r18
mov r25, r19
widgetGetLargestChildMinSize_loopNext:
rcall Tree_GetNextSibling ; (none)
rjmp widgetGetLargestChildMinSize_loop
widgetGetLargestChildMinSize_loopEnd:
mov r18, r24
mov r19, r25
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine widgetCountVisibleChildrenWithOptions1
;
; Count visible direct children with a matching WID_OFFS_OPTIONS1 field.
;
; @param r16 option1 value combination wanted
; @param r17 option1 mask of bits to match
; @return r18 number of matching direct children
; @clobbers r18, r24, r25, X
widgetCountVisibleChildrenWithOptions1:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
clr r24
widgetCountVisibleChildrenWithOptions1_loop:
mov r25, xl
or r25, xh
breq widgetCountVisibleChildrenWithOptions1_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq widgetCountVisibleChildrenWithOptions1_next
ldd r18, Y+WID_OFFS_OPTIONS1
eor r18, r17
and r18, r16
brne widgetCountVisibleChildrenWithOptions1_next
inc r24
widgetCountVisibleChildrenWithOptions1_next:
rcall Tree_GetNextSibling ; (none)
rjmp widgetSumOfChildrenMinSize_loop
widgetCountVisibleChildrenWithOptions1_loopEnd:
mov r18, r24
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wGetSumOfMatchingVisibleChildrenHeights
;
; Add heights of all matching visible children.
;
; @param r16 option1 value combination wanted
; @param r17 option1 mask of bits to match
; @return r19:r18 sum of widths of all visible direct children
; @clobbers r24, r25, X
wGetSumOfMatchingVisibleChildrenHeights:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
clr r24
clr r25
wGetSumOfMatchingVisibleChildrenHeights_loop:
mov r18, xl
or r18, xh
breq wGetSumOfMatchingVisibleChildrenHeights_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq wGetSumOfMatchingVisibleChildrenHeights_next
ldd r18, Y+WID_OFFS_OPTIONS1
eor r18, r17
and r18, r16
brne wGetSumOfMatchingVisibleChildrenHeights_next
ldd r18, Y+WID_OFFS_HEIGHT_LO
ldd r19, Y+WID_OFFS_HEIGHT_HI
add r24, r18
adc r25, r19
wGetSumOfMatchingVisibleChildrenHeights_next:
rcall Tree_GetNextSibling ; (none)
rjmp wGetSumOfMatchingVisibleChildrenHeights_loop
wGetSumOfMatchingVisibleChildrenHeights_loopEnd:
mov r18, r24
mov r19, r25
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wAddToWidthsOfExpandableVisibleChildren
;
; @param Y = pointer to widget data in SRAM
; @param r17:r16 number to add to the widths of all visible X-expandable children
; @clobbers r18, r19, X
wAddToWidthsOfExpandableVisibleChildren:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
wAddToWidthsOfExpandableVisibleChildren_loop:
mov r18, xl
or r18, xh
breq wAddToWidthsOfExpandableVisibleChildren_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq wAddToWidthsOfExpandableVisibleChildren_next
ldd r18, Y+WID_OFFS_OPTIONS1
andi r18, WID_OPTIONS1_BIT_STRETCH_X
breq wAddToWidthsOfExpandableVisibleChildren_next
ldd r18, Y+WID_OFFS_WIDTH_LO
ldd r19, Y+WID_OFFS_WIDTH_HI
add r18, r16
adc r19, r17
std Y+WID_OFFS_WIDTH_LO, r18
std Y+WID_OFFS_WIDTH_HI, r19
wAddToWidthsOfExpandableVisibleChildren_next:
rcall Tree_GetNextSibling ; (none)
rjmp wAddToWidthsOfExpandableVisibleChildren_loop
wAddToWidthsOfExpandableVisibleChildren_loopEnd:
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wAddToHeightsOfExpandableVisibleChildren
;
; @param Y = pointer to widget data in SRAM
; @param r17:r16 number to add to the heights of all visible Y-expandable children
; @clobbers r18, r19, X
wAddToHeightsOfExpandableVisibleChildren:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
wAddToHeightsOfExpandableVisibleChildren_loop:
mov r18, xl
or r18, xh
breq wAddToHeightsOfExpandableVisibleChildren_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
andi r18, WID_OPTIONS0_BIT_VISIBLE
breq wAddToHeightsOfExpandableVisibleChildren_next
ldd r18, Y+WID_OFFS_OPTIONS1
andi r18, WID_OPTIONS1_BIT_STRETCH_Y
breq wAddToHeightsOfExpandableVisibleChildren_next
ldd r18, Y+WID_OFFS_HEIGHT_LO
ldd r19, Y+WID_OFFS_HEIGHT_HI
add r18, r16
adc r19, r17
std Y+WID_OFFS_HEIGHT_LO, r18
std Y+WID_OFFS_HEIGHT_HI, r19
wAddToHeightsOfExpandableVisibleChildren_next:
rcall Tree_GetNextSibling ; (none)
rjmp wAddToHeightsOfExpandableVisibleChildren_loop
wAddToHeightsOfExpandableVisibleChildren_loopEnd:
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wSetChildrenWidthsFromMinWidths
;
; @clobbers any, !Y
wSetChildrenWidthsFromMinWidths:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
wSetChildrenWidthsFromMinWidths_loop:
mov r17, xl
or r17, xh
breq wSetChildrenWidthsFromMinWidths_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
sbrs r18, WID_OPTIONS0_BIT_VISIBLE
rjmp wSetChildrenWidthsFromMinWidths_loopNext ; jump if not visible
sbrc r18, WID_OPTIONS1_BIT_FIXED_WIDTH
rjmp wSetChildrenWidthsFromMinWidths_loopNext ; jump if fixed width
ldi r16, WID_SIGNAL_GETMINWIDTH
ldi r18, 1 ; default value for when the signal is not handled
ldi r19, 0 ; default value for when the signal is not handled
rcall OBJ_Handler ; ask child for its minimum size
std Y+WID_OFFS_WIDTH_LO, r18
std Y+WID_OFFS_WIDTH_HI, r19
wSetChildrenWidthsFromMinWidths_loopNext:
rcall Tree_GetNextSibling ; (none)
rjmp wSetChildrenWidthsFromMinWidths_loop
wSetChildrenWidthsFromMinWidths_loopEnd:
pop yh
pop yl
ret
; @end
; ---------------------------------------------------------------------------
; @routine wSetChildrenHeightsFromMinHeights
;
; @clobbers any, !Y
wSetChildrenHeightsFromMinHeights:
push yl
push yh
rcall Tree_GetFirstChildObject ; (none)
wSetChildrenHeightsFromMinHeights_loop:
mov r17, xl
or r17, xh
breq wSetChildrenHeightsFromMinHeights_loopEnd
mov yl, xl
mov yh, yl
ldd r18, Y+OBJ_OFFS_OPTIONS
sbrs r18, WID_OPTIONS0_BIT_VISIBLE
rjmp wSetChildrenHeightsFromMinHeights_loopNext ; jump if not visible
sbrc r18, WID_OPTIONS1_BIT_FIXED_HEIGHT
rjmp wSetChildrenHeightsFromMinHeights_loopNext ; jump if fixed height
ldi r16, WID_SIGNAL_GETMINHEIGHT
ldi r18, 1 ; default value for when the signal is not handled
ldi r19, 0 ; default value for when the signal is not handled
rcall OBJ_Handler ; ask child for its minimum size
std Y+WID_OFFS_HEIGHT_LO, r18
std Y+WID_OFFS_HEIGHT_HI, r19
wSetChildrenHeightsFromMinHeights_loopNext:
rcall Tree_GetNextSibling ; (none)
rjmp wSetChildrenHeightsFromMinHeights_loop
wSetChildrenHeightsFromMinHeights_loopEnd:
pop yh
pop yl
ret
; @end