1 files changed, 72 insertions, 0 deletions
diff --git a/src/css/box.nim b/src/css/box.nim
new file mode 100644
index 00000000..c3f0280d
--- /dev/null
+++ b/src/css/box.nim
@@ -0,0 +1,72 @@
+import unicode
+
+import ../types/enums
+
+import ../utils/twtstr
+
+type
+  CSSRect* = object
+    x1*: int
+    y1*: int
+    x2*: int
+    y2*: int
+
+  CSSBox* = ref CSSBoxObj
+  CSSBoxObj = object of RootObj
+    content*: seq[Rune]
+    innerEdge*: CSSRect
+    paddingEdge*: CSSRect
+    borderEdge*: CSSRect
+    marginEdge*: CSSRect
+    children*: seq[CSSBox]
+
+  CSSInlineBox* = ref CSSInlineBoxObj
+  CSSInlineBoxObj = object of CSSBox
+    nextpart: CSSInlineBox
+
+  CSSBlockBox* = ref CSSBlockBoxObj
+  CSSBlockBoxObj = object of CSSBox
+
+func `+`(a: CSSRect, b: CSSRect): CSSRect =
+  result.x1 = a.x1 + b.x1
+  result.y1 = a.y1 + b.y1
+  result.x2 = a.x2 + b.x2
+  result.y2 = a.y2 + b.y2
+
+proc `+=`(a: var CSSRect, b: CSSRect) =
+  a = a + b
+
+func size*(box: CSSBox): tuple[w: int, h: int] =
+  return (box.innerEdge.x2 - box.innerEdge.x1, box.innerEdge.y2 - box.innerEdge.x1)
+
+func boxesForText*(text: seq[Rune], width: int, height: int, lx: int, x: int, y: int): seq[CSSInlineBox] =
+  result.add(CSSInlineBox())
+  var w = x
+  var sx = x
+  var sy = y
+  var i = 0
+  while i < text.len and sy < height:
+    let cw = text[i].width()
+    if w + cw > width:
+      result[^1].innerEdge.x1 = sx
+      result[^1].innerEdge.x2 = sx + w
+      result[^1].innerEdge.y1 = sy
+      result[^1].innerEdge.y2 = sy + 1
+      sx = lx
+      inc sy
+      w = 0
+
+      result[^2].nextpart = result[^1]
+      result.add(CSSInlineBox())
+
+    result[^1].content &= text[i]
+    w += cw
+    inc i
+
+  if result.len > 1:
+    result[^2].nextpart = result[^1]
+  if w > 0:
+    result[^1].innerEdge.x1 = sx
+    result[^1].innerEdge.x2 = sx + w
+    result[^1].innerEdge.y1 = sy
+    result[^1].innerEdge.y2 = sy + 1