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21 package org.lobobrowser.html.renderer;
22
23 import java.awt.*;
24
25 class OffsetFloatingBounds implements FloatingBounds {
26 private final FloatingBounds ancestorFloatingBounds;
27 private final RBlockViewport ancestor;
28 private final RBlockViewport target;
29 private final Insets ancestorPadding;
30 private final Insets targetPadding;
31
32 public OffsetFloatingBounds(final FloatingBounds ancestorFloatingBounds, final RBlockViewport ancestor, Insets ancestorPadding, final RBlockViewport target, Insets targetPadding) {
33 this.ancestorFloatingBounds = ancestorFloatingBounds;
34 this.ancestor = ancestor;
35 this.target = target;
36 this.ancestorPadding = ancestorPadding;
37 this.targetPadding = targetPadding;
38 }
39
40 public int getClearY(int y) {
41 int ancestorY = this.translateToAncestorY(y);
42 int ancestorClearY = this.ancestorFloatingBounds.getClearY(ancestorY);
43 return this.translateAncestorY(ancestorClearY);
44 }
45
46 public int getLeft(int y) {
47 int ancestorY = this.translateToAncestorY(y);
48 Insets ap = this.ancestorPadding;
49 int aleft = ap == null ? 0 : ap.left;
50 int ancestorX = this.ancestorFloatingBounds.getLeft(ancestorY) + aleft;
51 Insets tp = this.targetPadding;
52 int tleft = tp == null ? 0 : tp.left;
53 int localX = this.translateAncestorX(ancestorX) - tleft;
54 return localX > 0 ? localX : 0;
55 }
56
57 public int getRight(int y) {
58 int ancestorY = this.translateToAncestorY(y);
59 Insets ancestorPadding = this.ancestorPadding;
60 Insets targetPadding = this.targetPadding;
61 int aleft = ancestorPadding == null ? 0 : ancestorPadding.left;
62 int tleft = targetPadding == null ? 0 : targetPadding.left;
63 int ancestorX = aleft + this.ancestor.getAvailContentWidth() - this.ancestorFloatingBounds.getRight(ancestorY);
64 int right = tleft + this.target.getAvailContentWidth() - this.translateAncestorX(ancestorX);
65 return right > 0 ? right : 0;
66 }
67
68 private final int translateToAncestorY(int y) {
69 RBlockViewport ancestor = this.ancestor;
71 BoundableRenderable current = this.target;
72 while(current != null && current != ancestor) {
73 y += current.getY();
74 current = current.getParent();
75 }
76 return y;
77 }
78
79 private final int translateAncestorY(int y) {
80 RBlockViewport ancestor = this.ancestor;
82 BoundableRenderable current = this.target;
83 while(current != null && current != ancestor) {
84 y -= current.getY();
85 current = current.getParent();
86 }
87 return y;
88 }
89
90 private final int translateAncestorX(int x) {
91 RBlockViewport ancestor = this.ancestor;
93 BoundableRenderable current = this.target;
94 while(current != null && current != ancestor) {
95 x -= current.getX();
96 current = current.getParent();
97 }
98 return x;
99 }
100
101 public boolean equals(Object  other) {
102 if(!(other instanceof OffsetFloatingBounds)) {
103 return false;
104 }
105 OffsetFloatingBounds ofb = (OffsetFloatingBounds) other;
106 return ofb.ancestor == this.ancestor &&
107 ofb.target == this.target &&
108 org.lobobrowser.util.Objects.equals(ofb.ancestorFloatingBounds, this.ancestorFloatingBounds);
109 }
110 }
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