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113 lines
3.2 KiB
113 lines
3.2 KiB
15 years ago
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/*
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This file is part of the KDE libraries
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Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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This widget holds some useful definitions needed for layouting Elements
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*/
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#ifndef HTML_LAYOUT_H
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#define HTML_LAYOUT_H
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/*
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* this namespace contains definitions for various types needed for
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* layouting.
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*/
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namespace khtml
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{
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const int UNDEFINED = -1;
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// alignment
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enum VAlign { VNone=0, Bottom, VCenter, Top, Baseline };
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enum HAlign { HDefault, Left, HCenter, Right, HNone = 0 };
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/*
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* %multiLength and %Length
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*/
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enum LengthType { Variable = 0, Relative, Percent, Fixed, Static };
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struct Length
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{
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Length() : _length(0) {}
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Length(LengthType t) { _length = 0; l.type = t; }
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Length(int v, LengthType t, bool q=false)
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{ _length= 0; l.value = v; l.type = t; l.quirk = q; }
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bool operator==(const Length& o) const
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{ return _length == o._length; }
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bool operator!=(const Length& o) const
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{ return _length != o._length; }
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void setValue(LengthType t, int v) {
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_length = 0; l.value = v; l.type = t; l.quirk = false;
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}
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/*
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* works only for Fixed and Percent, returns -1 otherwise
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*/
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int width(int maxWidth) const
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{
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switch(l.type)
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{
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case Fixed:
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return l.value;
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case Percent:
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return maxWidth*l.value/100;
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case Variable:
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return maxWidth;
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default:
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return -1;
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}
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}
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/*
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* returns the minimum width value which could work...
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*/
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int minWidth(int maxWidth) const
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{
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switch(l.type)
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{
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case Fixed:
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return l.value;
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case Percent:
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return maxWidth*l.value/100;
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case Variable:
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default:
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return 0;
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}
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}
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bool isVariable() const { return ((LengthType) l.type == Variable); }
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bool isRelative() const { return ((LengthType) l.type == Relative); }
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bool isPercent() const { return ((LengthType ) l.type == Percent); }
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bool isFixed() const { return ((LengthType) l.type == Fixed); }
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bool isStatic() const { return ((LengthType) l.type == Static); }
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bool isQuirk() const { return l.quirk; }
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int value() const { return l.value; }
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LengthType type() const { return (LengthType) l.type; }
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union {
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struct {
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signed int value : 28;
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unsigned type : 3;
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bool quirk : 1;
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} l;
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Q_UINT32 _length;
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};
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};
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}
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#endif
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