Inline Plugin

# Init?(go)

 1package inline
 2
 3import (
 4	"gui/cstyle"
 5	"gui/element"
 6)
 7
 8func Init() cstyle.Plugin {
 9	return cstyle.Plugin{
10		Selector: func(n *element.Node) bool {
11			styles := map[string]string{
12				"display": "inline",
13			}
14			matches := true
15			for name, value := range styles {
16				if n.Style[name] != value && !(value == "*") && n.Style[name] != "" {
17					matches = false
18				}
19			}
20			return matches
21		},
22		Level: 1,
23		Handler: func(n *element.Node, state *map[string]element.State) {
24			s := *state
25			self := s[n.Properties.Id]
26			parent := s[n.Parent.Properties.Id]
27			copyOfX := self.X
28			copyOfY := self.Y
29			xCollect := float32(0)
30			for i, v := range n.Parent.Children {
31				vState := s[v.Properties.Id]
32				if v.Style["position"] != "absolute" {
33					if v.Style["display"] != "inline" {
34						xCollect = 0
35					} else {
36						if v.Properties.Id == n.Properties.Id {
37							if self.X+xCollect+self.Width > ((parent.Width)-parent.Padding.Right)+parent.X && i > 0 {
38								// Break Node
39								sibling := s[n.Parent.Children[i-1].Properties.Id]
40								self.Y += sibling.Height
41								self.X = copyOfX
42							} else if i > 0 {
43								// Node did not break
44								self.X += xCollect
45							}
46							break
47						} else {
48							if v.Style["display"] == "inline" {
49								if colliderDetection(vState, self) {
50									xCollect += vState.Width
51								} else {
52									xCollect = 0
53								}
54							}
55						}
56					}
57				}
58			}
59			propagateOffsets(n, copyOfX, copyOfY, self, state)
60			(*state)[n.Properties.Id] = self
61		},
62	}
63}
64
65func propagateOffsets(n *element.Node, copyOfX, copyOfY float32, self element.State, state *map[string]element.State) {
66	s := *state
67	for _, v := range n.Children {
68		vState := s[v.Properties.Id]
69		vState.X += self.X - copyOfX
70		vState.Y += self.Y - copyOfY
71		if len(v.Children) > 0 {
72			propagateOffsets(&v, copyOfX, copyOfY, self, state)
73		}
74		(*state)[v.Properties.Id] = vState
75	}
76}
77
78func colliderDetection(s1, s2 element.State) bool {
79	s1Min := s1.Y
80	s1Max := s1.Y + s1.Height
81	s2Min := s2.Y
82	s2Max := s2.Y + s2.Height
83	return s1Min > s2Min && s1Min < s2Max || s1Max > s2Min && s1Min < s2Max || s2Min > s1Min && s2Min < s1Max || s2Max > s1Min && s2Min < s1Max
84}