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/*
This file is part of the KDE libraries
Copyright (C) 1999 Lars Knoll (knoll@kde.org)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
This widget holds some useful definitions needed for layouting Elements
*/
#ifndef HTML_LAYOUT_H
#define HTML_LAYOUT_H
/*
* this namespace contains definitions for various types needed for
* layouting.
*/
namespace khtml
{
const int UNDEFINED = -1;
// alignment
enum VAlign { VNone=0, Bottom, VCenter, Top, Baseline };
enum HAlign { HDefault, Left, HCenter, Right, HNone = 0 };
/*
* %multiLength and %Length
*/
enum LengthType { Variable = 0, Relative, Percent, Fixed, Static };
struct Length
{
Length() : _length(0) {}
Length(LengthType t) { _length = 0; l.type = t; }
Length(int v, LengthType t, bool q=false)
{ _length= 0; l.value = v; l.type = t; l.quirk = q; }
bool operator==(const Length& o) const
{ return _length == o._length; }
bool operator!=(const Length& o) const
{ return _length != o._length; }
void setValue(LengthType t, int v) {
_length = 0; l.value = v; l.type = t; l.quirk = false;
}
/*
* works only for Fixed and Percent, returns -1 otherwise
*/
int width(int maxWidth) const
{
switch(l.type)
{
case Fixed:
return l.value;
case Percent:
return maxWidth*l.value/100;
case Variable:
return maxWidth;
default:
return -1;
}
}
/*
* returns the minimum width value which could work...
*/
int minWidth(int maxWidth) const
{
switch(l.type)
{
case Fixed:
return l.value;
case Percent:
return maxWidth*l.value/100;
case Variable:
default:
return 0;
}
}
bool isVariable() const { return ((LengthType) l.type == Variable); }
bool isRelative() const { return ((LengthType) l.type == Relative); }
bool isPercent() const { return ((LengthType ) l.type == Percent); }
bool isFixed() const { return ((LengthType) l.type == Fixed); }
bool isStatic() const { return ((LengthType) l.type == Static); }
bool isQuirk() const { return l.quirk; }
int value() const { return l.value; }
LengthType type() const { return (LengthType) l.type; }
union {
struct {
signed int value : 28;
unsigned type : 3;
bool quirk : 1;
} l;
Q_UINT32 _length;
};
};
}
#endif
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