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import options
import css/stylednode
import css/values
import io/window
import layout/layoutunit
import types/color
type
Offset* = object
x*: LayoutUnit
y*: LayoutUnit
Size* = object
width*: LayoutUnit
height*: LayoutUnit
Strut* = object
pos*: LayoutUnit
neg*: LayoutUnit
Viewport* = ref object
window*: WindowAttributes
positioned*: seq[BlockBox]
BoxBuilder* = ref object of RootObj
children*: seq[BoxBuilder]
inlinelayout*: bool
computed*: CSSComputedValues
node*: StyledNode
InlineBoxBuilder* = ref object of BoxBuilder
text*: seq[string]
newline*: bool
splitstart*: bool
splitend*: bool
BlockBoxBuilder* = ref object of BoxBuilder
MarkerBoxBuilder* = ref object of InlineBoxBuilder
ListItemBoxBuilder* = ref object of BoxBuilder
marker*: MarkerBoxBuilder
content*: BlockBoxBuilder
TableRowGroupBoxBuilder* = ref object of BlockBoxBuilder
TableRowBoxBuilder* = ref object of BlockBoxBuilder
TableCellBoxBuilder* = ref object of BlockBoxBuilder
TableBoxBuilder* = ref object of BlockBoxBuilder
rowgroups*: seq[TableRowGroupBoxBuilder]
TableCaptionBoxBuilder* = ref object of BlockBoxBuilder
InlineAtom* = ref object of RootObj
offset*: Offset
width*: LayoutUnit
height*: LayoutUnit
vertalign*: CSSVerticalAlign
baseline*: LayoutUnit
top*: LayoutUnit
bottom*: LayoutUnit
ComputedFormat* = ref object
fontstyle*: CSSFontStyle
fontweight*: int
textdecoration*: set[CSSTextDecoration]
color*: RGBAColor
node*: StyledNode
#TODO: background color should not be stored in inline words. Instead,
# inline box fragments should be passed on to the renderer, which could
# then properly blend them.
bgcolor*: RGBAColor
InlineSpacing* = ref object of InlineAtom
format*: ComputedFormat
InlineWord* = ref object of InlineAtom
str*: string
format*: ComputedFormat
LineBox* = ref object
atoms*: seq[InlineAtom]
offset*: Offset
width*: LayoutUnit
height*: LayoutUnit
baseline*: LayoutUnit
lineheight*: LayoutUnit #line-height property
InlineContext* = ref object
offset*: Offset
height*: LayoutUnit
lines*: seq[LineBox]
currentLine*: LineBox
width*: LayoutUnit
contentWidth*: LayoutUnit
contentHeight*: Option[LayoutUnit]
contentWidthInfinite*: bool
charwidth*: int
whitespacenum*: int
# this is actually xminwidth.
minwidth*: LayoutUnit
viewport*: Viewport
shrink*: bool
format*: ComputedFormat
BlockBox* = ref object of RootObj
inline*: InlineContext
node*: StyledNode
nested*: seq[BlockBox]
computed*: CSSComputedValues
viewport*: Viewport
offset*: Offset
# This is the padding width/height.
width*: LayoutUnit
height*: LayoutUnit
margin_top*: LayoutUnit
margin_bottom*: LayoutUnit
margin_left*: LayoutUnit
margin_right*: LayoutUnit
padding_top*: LayoutUnit
padding_bottom*: LayoutUnit
padding_left*: LayoutUnit
padding_right*: LayoutUnit
min_width*: Option[LayoutUnit]
max_width*: Option[LayoutUnit]
min_height*: Option[LayoutUnit]
max_height*: Option[LayoutUnit]
# This is the (specified) content width/height. Actual dimensions may
# differ (i.e. overflow)
contentWidth*: LayoutUnit
contentHeight*: Option[LayoutUnit]
shrink*: bool
# Whether to stretch content to infinity.
contentWidthInfinite*: bool
positioned*: bool
x_positioned*: bool
y_positioned*: bool
# very bad name. basically the minimum content width after the contents
# have been positioned (usually the width of the shortest word.) used
# in table cells.
xminwidth*: LayoutUnit
ListItemBox* = ref object of BlockBox
marker*: InlineContext
CellWrapper* = ref object
builder*: TableCellBoxBuilder
box*: BlockBox
rowi*: int
coli*: int
colspan*: int
rowspan*: int
reflow*: bool
grown*: int # number of remaining rows
RowContext* = object
cells*: seq[CellWrapper]
reflow*: seq[bool]
width*: LayoutUnit
builder*: TableRowBoxBuilder
ncols*: int
ColumnContext* = object
minwidth*: LayoutUnit
maxwidth*: LayoutUnit
width*: LayoutUnit
wspecified*: bool
weight*: float64
TableContext* = object
caption*: TableCaptionBoxBuilder
rows*: seq[RowContext]
cols*: seq[ColumnContext]
growing*: seq[CellWrapper]
maxwidth*: LayoutUnit
blockspacing*: LayoutUnit
inlinespacing*: LayoutUnit
collapse*: bool
InlineBlockBox* = ref object of InlineAtom
innerbox*: BlockBox
margin_top*: LayoutUnit
margin_bottom*: LayoutUnit
proc append*(a: var Strut, b: LayoutUnit) =
if b < 0:
a.neg = min(b, a.neg)
else:
a.pos = max(b, a.pos)
func sum*(a: Strut): LayoutUnit =
return a.pos + a.neg
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