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# css_valueimpl.h

    00001 /*
    00002  * This file is part of the DOM implementation for KDE.
    00003  *
    00004  * (C) 1999 Lars Knoll (knoll@kde.org)
    00005  *
    00006  * This library is free software; you can redistribute it and/or
    00007  * modify it under the terms of the GNU Library General Public
    00008  * License as published by the Free Software Foundation; either
    00009  * version 2 of the License, or (at your option) any later version.
    00010  *
    00011  * This library is distributed in the hope that it will be useful,
    00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00014  * Library General Public License for more details.
    00015  *
    00016  * You should have received a copy of the GNU Library General Public License
    00017  * along with this library; see the file COPYING.LIB.  If not, write to
    00018  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00019  * Boston, MA 02111-1307, USA.
    00020  *
    00021  * $Id: css_valueimpl.h,v 1.41.2.2 2003/08/17 14:38:51 mueller Exp $
    00022  */
    00023 #ifndef _CSS_css_valueimpl_h_
    00024 #define _CSS_css_valueimpl_h_
    00025
    00026 #include "dom/css_value.h"
    00027 #include "dom/dom_string.h"
    00028 #include "css/cssparser.h"
    00029 #include "misc/loader_client.h"
    00030 #include "misc/shared.h"
    00031
    00032 #include <qintdict.h>
    00033
    00034 namespace khtml {
    00035     class RenderStyle;
    00036     class CachedImage;
    00037 }
    00038
    00039 namespace DOM {
    00040
    00041 class CSSRuleImpl;
    00042 class CSSValueImpl;
    00043 class NodeImpl;
    00044 class CounterImpl;
    00045
    00046
    00047 class CSSStyleDeclarationImpl : public StyleBaseImpl
    00048 {
    00049 public:
    00050     CSSStyleDeclarationImpl(CSSRuleImpl *parentRule);
    00051     CSSStyleDeclarationImpl(CSSRuleImpl *parentRule, QPtrList<CSSProperty> *lstValues);
    00052     virtual ~CSSStyleDeclarationImpl();
    00053
    00054     CSSStyleDeclarationImpl& operator=( const CSSStyleDeclarationImpl&);
    00055
    00056     unsigned long length() const;
    00057     CSSRuleImpl *parentRule() const;
    00058     DOM::DOMString removeProperty( int propertyID, bool NonCSSHints = false );
    00059     void setProperty ( int propertyId, const DOM::DOMString &value, bool important = false, bool nonCSSHint = false);
    00060     void setProperty ( int propertyId, int value, bool important = false, bool nonCSSHint = false);
    00061     // this treats integers as pixels!
    00062     // needed for conversion of html attributes
    00063     void setLengthProperty(int id, const DOM::DOMString &value, bool important, bool nonCSSHint = true, bool multiLength = false);
    00064
    00065     // add a whole, unparsed property
    00066     void setProperty ( const DOMString &propertyString);
    00067     DOM::DOMString item ( unsigned long index );
    00068
    00069     DOM::DOMString cssText() const;
    00070     void setCssText(DOM::DOMString str);
    00071
    00072     virtual bool isStyleDeclaration() { return true; }
    00073
    00074     virtual bool parseString( const DOMString &string, bool = false );
    00075
    00076     CSSValueImpl *getPropertyCSSValue( int propertyID ) const;
    00077     DOMString getPropertyValue( int propertyID ) const;
    00078     bool getPropertyPriority( int propertyID ) const;
    00079
    00080     QPtrList<CSSProperty> *values() { return m_lstValues; }
    00081     void setNode(NodeImpl *_node) { m_node = _node; }
    00082
    00083     void setChanged();
    00084
    00085 protected:
    00086     DOMString getShortHandValue( const int* properties, int number ) const;
    00087     DOMString get4Values( const int* properties ) const;
    00088
    00089     QPtrList<CSSProperty> *m_lstValues;
    00090     NodeImpl *m_node;
    00091
    00092 private:
    00093     // currently not needed - make sure its not used
    00094     CSSStyleDeclarationImpl(const CSSStyleDeclarationImpl& o);
    00095 };
    00096
    00097 class CSSValueImpl : public StyleBaseImpl
    00098 {
    00099 public:
    00100     CSSValueImpl();
    00101
    00102     virtual ~CSSValueImpl();
    00103
    00104     virtual unsigned short cssValueType() const = 0;
    00105
    00106     virtual DOM::DOMString cssText() const;
    00107     void setCssText(DOM::DOMString str);
    00108
    00109     virtual bool isValue() { return true; }
    00110 };
    00111
    00112 class CSSInheritedValueImpl : public CSSValueImpl
    00113 {
    00114 public:
    00115     CSSInheritedValueImpl() : CSSValueImpl() {}
    00116     virtual ~CSSInheritedValueImpl() {}
    00117
    00118     virtual unsigned short cssValueType() const { return CSSValue::CSS_INHERIT; }
    00119     virtual DOM::DOMString cssText() const;
    00120 };
    00121
    00122
    00123 class CSSValueListImpl : public CSSValueImpl
    00124 {
    00125 public:
    00126     CSSValueListImpl();
    00127
    00128     virtual ~CSSValueListImpl();
    00129
    00130     unsigned long length() const { return m_values.count(); }
    00131     CSSValueImpl *item ( unsigned long index ) { return m_values.at(index); }
    00132
    00133     virtual bool isValueList() { return true; }
    00134
    00135     virtual unsigned short cssValueType() const;
    00136
    00137     void append(CSSValueImpl *val);
    00138     virtual DOM::DOMString cssText() const;
    00139
    00140 protected:
    00141     QPtrList<CSSValueImpl> m_values;
    00142 };
    00143
    00144
    00145 class Counter;
    00146 class RGBColor;
    00147 class Rect;
    00148
    00149 class CSSPrimitiveValueImpl : public CSSValueImpl
    00150 {
    00151 public:
    00152     CSSPrimitiveValueImpl();
    00153     CSSPrimitiveValueImpl(int ident);
    00154     CSSPrimitiveValueImpl(float num, CSSPrimitiveValue::UnitTypes type);
    00155     CSSPrimitiveValueImpl(const DOMString &str, CSSPrimitiveValue::UnitTypes type);
    00156     CSSPrimitiveValueImpl(const Counter &c);
    00157     CSSPrimitiveValueImpl( RectImpl *r);
    00158     CSSPrimitiveValueImpl(QRgb color);
    00159
    00160     virtual ~CSSPrimitiveValueImpl();
    00161
    00162     void cleanup();
    00163
    00164     unsigned short primitiveType() const {
    00165             return m_type;
    00166     }
    00167
    00168     /*
    00169      * computes a length in pixels out of the given CSSValue. Need the RenderStyle to get
    00170      * the fontinfo in case val is defined in em or ex.
    00171      *
    00172      * The metrics have to be a bit different for screen and printer output.
    00173      * For screen output we assume 1 inch == 72 px, for printer we assume 300 dpi
    00174      *
    00175      * this is screen/printer dependent, so we probably need a config option for this,
    00176      * and some tool to calibrate.
    00177      */
    00178     int computeLength( khtml::RenderStyle *style, QPaintDeviceMetrics *devMetrics );
    00179
    00180     float computeLengthFloat( khtml::RenderStyle *style, QPaintDeviceMetrics *devMetrics );
    00181
    00182
    00183     // use with care!!!
    00184     void setPrimitiveType(unsigned short type) { m_type = type; }
    00185     void setFloatValue ( unsigned short unitType, float floatValue, int &exceptioncode );
    00186     float getFloatValue ( unsigned short/* unitType */) const {
    00187         return m_value.num;
    00188     }
    00189
    00190     void setStringValue ( unsigned short stringType, const DOM::DOMString &stringValue, int &exceptioncode );
    00191     DOM::DOMStringImpl *getStringValue () const {
    00192         return ( ( m_type < CSSPrimitiveValue::CSS_STRING ||
    00193                    m_type > CSSPrimitiveValue::CSS_ATTR ||
    00194                    m_type == CSSPrimitiveValue::CSS_IDENT ) ? // fix IDENT
    00195                  0 : m_value.string );
    00196     }
    00197     CounterImpl *getCounterValue () const {
    00198         return ( m_type != CSSPrimitiveValue::CSS_COUNTER ? 0 : m_value.counter );
    00199     }
    00200
    00201     RectImpl *getRectValue () const {
    00202         return ( m_type != CSSPrimitiveValue::CSS_RECT ? 0 : m_value.rect );
    00203     }
    00204
    00205     QRgb getRGBColorValue () const {
    00206         return ( m_type != CSSPrimitiveValue::CSS_RGBCOLOR ? 0 : m_value.rgbcolor );
    00207     }
    00208
    00209     virtual bool isPrimitiveValue() const { return true; }
    00210     virtual unsigned short cssValueType() const;
    00211
    00212     int getIdent();
    00213
    00214     virtual bool parseString( const DOMString &string, bool = false);
    00215     virtual DOM::DOMString cssText() const;
    00216
    00217 protected:
    00218     int m_type;
    00219     union {
    00220         int ident;
    00221         float num;
    00222         DOM::DOMStringImpl *string;
    00223         CounterImpl *counter;
    00224         RectImpl *rect;
    00225         QRgb rgbcolor;
    00226     } m_value;
    00227 };
    00228
    00229 class CounterImpl : public khtml::Shared<CounterImpl> {
    00230 public:
    00231     CounterImpl() { }
    00232     DOMString identifier() const { return m_identifier; }
    00233     DOMString listStyle() const { return m_listStyle; }
    00234     DOMString separator() const { return m_separator; }
    00235
    00236     DOMString m_identifier;
    00237     DOMString m_listStyle;
    00238     DOMString m_separator;
    00239 };
    00240
    00241 class RectImpl : public khtml::Shared<RectImpl> {
    00242 public:
    00243     RectImpl();
    00244     ~RectImpl();
    00245
    00246     CSSPrimitiveValueImpl *top() { return m_top; }
    00247     CSSPrimitiveValueImpl *right() { return m_right; }
    00248     CSSPrimitiveValueImpl *bottom() { return m_bottom; }
    00249     CSSPrimitiveValueImpl *left() { return m_left; }
    00250
    00251     void setTop( CSSPrimitiveValueImpl *top );
    00252     void setRight( CSSPrimitiveValueImpl *right );
    00253     void setBottom( CSSPrimitiveValueImpl *bottom );
    00254     void setLeft( CSSPrimitiveValueImpl *left );
    00255 protected:
    00256     CSSPrimitiveValueImpl *m_top;
    00257     CSSPrimitiveValueImpl *m_right;
    00258     CSSPrimitiveValueImpl *m_bottom;
    00259     CSSPrimitiveValueImpl *m_left;
    00260 };
    00261
    00262 class CSSImageValueImpl : public CSSPrimitiveValueImpl, public khtml::CachedObjectClient
    00263 {
    00264 public:
    00265     CSSImageValueImpl(const DOMString &url, StyleBaseImpl *style);
    00266     CSSImageValueImpl();
    00267     virtual ~CSSImageValueImpl();
    00268
    00269     khtml::CachedImage *image() { return m_image; }
    00270 protected:
    00271     khtml::CachedImage *m_image;
    00272 };
    00273
    00274 class FontFamilyValueImpl : public CSSPrimitiveValueImpl
    00275 {
    00276 public:
    00277     FontFamilyValueImpl( const QString &string);
    00278     const QString &fontName() const { return parsedFontName; }
    00279 protected:
    00280     QString parsedFontName;
    00281 };
    00282
    00283 // ------------------------------------------------------------------------------
    00284
    00285 // another helper class
    00286 class CSSProperty
    00287 {
    00288 public:
    00289     CSSProperty()
    00290     {
    00291         m_id = -1;
    00292         m_bImportant = false;
    00293         nonCSSHint = false;
    00294         m_value = 0;
    00295     }
    00296     CSSProperty(const CSSProperty& o)
    00297     {
    00298         m_id = o.m_id;
    00299         m_bImportant = o.m_bImportant;
    00300         nonCSSHint = o.nonCSSHint;
    00301         m_value = o.m_value;
    00302         if (m_value) m_value->ref();
    00303     }
    00304     ~CSSProperty() {
    00305         if(m_value) m_value->deref();
    00306     }
    00307
    00308     void setValue(CSSValueImpl *val) {
    00309         if ( val != m_value ) {
    00310             if(m_value) m_value->deref();
    00311             m_value = val;
    00312             if(m_value) m_value->ref();
    00313         }
    00314     }
    00315
    00316     CSSValueImpl *value() { return m_value; }
    00317
    00318     // make sure the following fits in 4 bytes.
    00319     signed int  m_id    : 29;
    00320     bool m_bImportant   : 1;
    00321     bool nonCSSHint     : 1;
    00322 protected:
    00323     CSSValueImpl *m_value;
    00324 };
    00325
    00326
    00327 } // namespace
    00328
    00329 #endif

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 13:33:33 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001