/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The XAMJ Project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Contact info: lobochief@users.sourceforge.net
*/
package org.lobobrowser.html.renderer;
class FloatingViewportBounds implements FloatingBounds {
private final FloatingBounds prevBounds;
private final boolean leftFloat;
private final int y;
private final int offsetFromBorder;
private final int height;
/**
*
* @param prevBounds
* @param leftFloat
* @param y
* @param offsetFromBorder
* Width of floating box, including padding insets.
* @param height
*/
public FloatingViewportBounds(final FloatingBounds prevBounds, final boolean leftFloat, final int y, final int offsetFromBorder,
final int height) {
this.prevBounds = prevBounds;
this.leftFloat = leftFloat;
this.y = y;
this.offsetFromBorder = offsetFromBorder;
this.height = height;
}
public int getLeft(final int y) {
int left = 0;
if (this.leftFloat && (y >= this.y) && (y < (this.y + height))) {
left = this.offsetFromBorder;
}
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int newLeft = prev.getLeft(y);
if (newLeft > left) {
left = newLeft;
}
}
return left;
}
/**
* The offset from the right edge, not counting padding.
*/
public int getRight(final int y) {
int right = 0;
if (!this.leftFloat && (y >= this.y) && (y < (this.y + this.height))) {
right = this.offsetFromBorder;
}
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int newRight = prev.getRight(y);
if (newRight > right) {
right = newRight;
}
}
return right;
}
public int getClearY(final int y) {
int cleary = Math.max(y, this.y + this.height);
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int pcy = prev.getClearY(y);
if (pcy > cleary) {
cleary = pcy;
}
}
return cleary;
}
public int getFirstClearY(final int y) {
int clearY = y;
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int prevClearY = prev.getFirstClearY(y);
if (prevClearY != y) {
clearY = prevClearY;
}
}
if ((clearY == y) && (y >= this.y) && (y < (this.y + this.height))) {
clearY = this.y + this.height;
}
return clearY;
}
public int getLeftClearY(final int y) {
int cleary;
if (this.leftFloat) {
cleary = Math.max(y, this.y + this.height);
} else {
cleary = y;
}
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int pcy = prev.getLeftClearY(y);
if (pcy > cleary) {
cleary = pcy;
}
}
return cleary;
}
public int getRightClearY(final int y) {
int cleary;
if (!this.leftFloat) {
cleary = Math.max(y, this.y + this.height);
} else {
cleary = y;
}
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int pcy = prev.getLeftClearY(y);
if (pcy > cleary) {
cleary = pcy;
}
}
return cleary;
}
public int getMaxY() {
int maxY = this.y + this.height;
final FloatingBounds prev = this.prevBounds;
if (prev != null) {
final int prevMaxY = prev.getMaxY();
if (prevMaxY > maxY) {
maxY = prevMaxY;
}
}
return maxY;
}
@Override
public boolean equals(final Object other) {
// Important for layout caching.
if (other == this) {
return true;
}
if (!(other instanceof FloatingViewportBounds)) {
return false;
}
final FloatingViewportBounds olm = (FloatingViewportBounds) other;
return (olm.leftFloat == this.leftFloat) && (olm.y == this.y) && (olm.height == this.height)
&& (olm.offsetFromBorder == this.offsetFromBorder)
&& java.util.Objects.equals(olm.prevBounds, this.prevBounds);
}
@Override
public int hashCode() {
return (this.leftFloat ? 1 : 0) ^ this.y ^ this.height ^ this.offsetFromBorder;
}
}