cssstyleselector.cpp

khtml在gtk上的移植版本

                    //kdDebug( 6080 ) << "*** Rule #" << j << endl;

                    CSSRuleImpl *childItem = rules->item(j);
                    if (childItem->isStyleRule()) {
                        // It is a StyleRule, so append it to our list
                        CSSStyleRuleImpl* rule = static_cast<CSSStyleRuleImpl*>(childItem);
                        for (CSSSelector* s = rule->selector(); s; s = s->next())
                            addRule(rule, s);
                        
                    }
                    else
                    {
                        //kdDebug( 6080 ) << "Ignoring child rule of "
                        //    "ImportRule: rule is not a StyleRule!" << endl;
                    }
                }   // for rules
            }   // if rules
            else
            {
                //kdDebug( 6080 ) << "CSSMediaRule not rendered: "
                //                << "rule empty or wrong medium!" << endl;
            }
        }
        // ### include other rules
    }
}

// -------------------------------------------------------------------------------------
// this is mostly boring stuff on how to apply a certain rule to the renderstyle...

static Length convertToLength( CSSPrimitiveValueImpl *primitiveValue, RenderStyle *style, QPaintDeviceMetrics *paintDeviceMetrics, bool *ok = 0 )
{
    Length l;
    if ( !primitiveValue ) {
	if ( ok )
	    *ok = false;
    } else {
	int type = primitiveValue->primitiveType();
	if(type > CSSPrimitiveValue::CSS_PERCENTAGE && type < CSSPrimitiveValue::CSS_DEG)
	    l = Length(primitiveValue->computeLength(style, paintDeviceMetrics), Fixed);
	else if(type == CSSPrimitiveValue::CSS_PERCENTAGE)
	    l = Length(int(primitiveValue->getFloatValue(CSSPrimitiveValue::CSS_PERCENTAGE)), Percent);
	else if(type == CSSPrimitiveValue::CSS_NUMBER)
	    l = Length(int(primitiveValue->getFloatValue(CSSPrimitiveValue::CSS_NUMBER)*100), Percent);
        else if (type == CSSPrimitiveValue::CSS_HTML_RELATIVE)
            l = Length(int(primitiveValue->getFloatValue(CSSPrimitiveValue::CSS_HTML_RELATIVE)), Relative);
	else if ( ok )
	    *ok = false;
    }
    return l;
}


// color mapping code
struct colorMap {
    int css_value;
    QRgb color;
};

static const colorMap cmap[] = {
    { CSS_VAL_AQUA, 0xFF00FFFF },
    { CSS_VAL_BLACK, 0xFF000000 },
    { CSS_VAL_BLUE, 0xFF0000FF },
    { CSS_VAL_FUCHSIA, 0xFFFF00FF },
    { CSS_VAL_GRAY, 0xFF808080 },
    { CSS_VAL_GREEN, 0xFF008000  },
    { CSS_VAL_LIME, 0xFF00FF00 },
    { CSS_VAL_MAROON, 0xFF800000 },
    { CSS_VAL_NAVY, 0xFF000080 },
    { CSS_VAL_OLIVE, 0xFF808000  },
    { CSS_VAL_ORANGE, 0xFFFFA500 },
    { CSS_VAL_PURPLE, 0xFF800080 },
    { CSS_VAL_RED, 0xFFFF0000 },
    { CSS_VAL_SILVER, 0xFFC0C0C0 },
    { CSS_VAL_TEAL, 0xFF008080  },
    { CSS_VAL_WHITE, 0xFFFFFFFF },
    { CSS_VAL_YELLOW, 0xFFFFFF00 },
    { CSS_VAL_INVERT, invertedColor },
    { CSS_VAL_TRANSPARENT, transparentColor },
    { CSS_VAL_GREY, 0xFF808080 },
#if APPLE_CHANGES
    { CSS_VAL_ACTIVEBORDER, 0xFFE0E0E0 },
    { CSS_VAL_ACTIVECAPTION, 0xFF000000 },
    { CSS_VAL_APPWORKSPACE, 0xFF000000 },
    { CSS_VAL_BUTTONFACE, 0xFFC0C0C0 },
    { CSS_VAL_BUTTONHIGHLIGHT, 0xFFE0E0E0 },
    { CSS_VAL_BUTTONSHADOW, 0xFFFFFFFF },
    { CSS_VAL_BUTTONTEXT, 0xFF000000 },
    { CSS_VAL_CAPTIONTEXT, 0xFF000000 },
    { CSS_VAL_GRAYTEXT, 0xFF000000 },
    { CSS_VAL_HIGHLIGHT, 0xFFFFFFFF },
    { CSS_VAL_HIGHLIGHTTEXT, 0xFFFFFFFF },
    { CSS_VAL_INACTIVEBORDER, 0xFFFFFFFF },
    { CSS_VAL_INACTIVECAPTION, 0xFFFFFFFF },
    { CSS_VAL_INACTIVECAPTIONTEXT, 0xFF000000 },
    { CSS_VAL_INFOBACKGROUND, 0xFF000000 },
    { CSS_VAL_INFOTEXT, 0xFF000000 },
    { CSS_VAL_MENU, 0xFFFFFFFF },
    { CSS_VAL_MENUTEXT, 0xFFFFFFFF },
    { CSS_VAL_SCROLLBAR, 0xFFFFFFFF },
    { CSS_VAL_TEXT, 0xFF000000 },
    { CSS_VAL_THREEDDARKSHADOW, 0xFF404040 },
    { CSS_VAL_THREEDFACE, 0xFFC0C0C0 },
    { CSS_VAL_THREEDHIGHLIGHT, 0xFFE0E0E0 },
    { CSS_VAL_THREEDLIGHTSHADOW, 0xFFC0C0C0 },
    { CSS_VAL_THREEDSHADOW, 0xFFFFFFFF },
    { CSS_VAL_WINDOW, 0xFFFFFFFF },
    { CSS_VAL_WINDOWFRAME, 0xFFFFFFFF },
    { CSS_VAL_WINDOWTEXT, 0xFF000000 },
#endif
    { 0, 0 }
};

#if !APPLE_CHANGES

struct uiColors {
    int css_value;
    const char * configGroup;
    const char * configEntry;
QPalette::ColorGroup group;
QColorGroup::ColorRole role;
};

const char * const wmgroup = "WM";
const char * const generalgroup = "General";

/* Mapping system settings to CSS 2
* Tried hard to get an appropriate mapping - schlpbch
*/
static const uiColors uimap[] = {
    // Active window border.
    { CSS_VAL_ACTIVEBORDER, wmgroup, "background", QPalette::Active, QColorGroup::Light },
    // Active window caption.
    { CSS_VAL_ACTIVECAPTION, wmgroup, "background", QPalette::Active, QColorGroup::Text },
    // Text in caption, size box, and scrollbar arrow box.
    { CSS_VAL_CAPTIONTEXT, wmgroup, "activeForeground", QPalette::Active, QColorGroup::Text },
    // Face color for three-dimensional display elements.
    { CSS_VAL_BUTTONFACE, wmgroup, 0, QPalette::Inactive, QColorGroup::Button },
    // Dark shadow for three-dimensional display elements (for edges facing away from the light source).
    { CSS_VAL_BUTTONHIGHLIGHT, wmgroup, 0, QPalette::Inactive, QColorGroup::Light },
    // Shadow color for three-dimensional display elements.
    { CSS_VAL_BUTTONSHADOW, wmgroup, 0, QPalette::Inactive, QColorGroup::Shadow },
    // Text on push buttons.
    { CSS_VAL_BUTTONTEXT, wmgroup, "buttonForeground", QPalette::Inactive, QColorGroup::ButtonText },
    // Dark shadow for three-dimensional display elements.
    { CSS_VAL_THREEDDARKSHADOW, wmgroup, 0, QPalette::Inactive, QColorGroup::Dark },
    // Face color for three-dimensional display elements.
    { CSS_VAL_THREEDFACE, wmgroup, 0, QPalette::Inactive, QColorGroup::Button },
    // Highlight color for three-dimensional display elements.
    { CSS_VAL_THREEDHIGHLIGHT, wmgroup, 0, QPalette::Inactive, QColorGroup::Light },
    // Light color for three-dimensional display elements (for edges facing the light source).
    { CSS_VAL_THREEDLIGHTSHADOW, wmgroup, 0, QPalette::Inactive, QColorGroup::Midlight },
    // Dark shadow for three-dimensional display elements.
    { CSS_VAL_THREEDSHADOW, wmgroup, 0, QPalette::Inactive, QColorGroup::Shadow },

    // Inactive window border.
    { CSS_VAL_INACTIVEBORDER, wmgroup, "background", QPalette::Disabled, QColorGroup::Background },
    // Inactive window caption.
    { CSS_VAL_INACTIVECAPTION, wmgroup, "inactiveBackground", QPalette::Disabled, QColorGroup::Background },
    // Color of text in an inactive caption.
    { CSS_VAL_INACTIVECAPTIONTEXT, wmgroup, "inactiveForeground", QPalette::Disabled, QColorGroup::Text },
    { CSS_VAL_GRAYTEXT, wmgroup, 0, QPalette::Disabled, QColorGroup::Text },

    // Menu background
    { CSS_VAL_MENU, generalgroup, "background", QPalette::Inactive, QColorGroup::Background },
    // Text in menus
    { CSS_VAL_MENUTEXT, generalgroup, "foreground", QPalette::Inactive, QColorGroup::Background },

    // Text of item(s) selected in a control.
    { CSS_VAL_HIGHLIGHT, generalgroup, "selectBackground", QPalette::Inactive, QColorGroup::Background },

    // Text of item(s) selected in a control.
    { CSS_VAL_HIGHLIGHTTEXT, generalgroup, "selectForeground", QPalette::Inactive, QColorGroup::Background },

    // Background color of multiple document interface.
    { CSS_VAL_APPWORKSPACE, generalgroup, "background", QPalette::Inactive, QColorGroup::Text },

    // Scroll bar gray area.
    { CSS_VAL_SCROLLBAR, generalgroup, "background", QPalette::Inactive, QColorGroup::Background },

    // Window background.
    { CSS_VAL_WINDOW, generalgroup, "windowBackground", QPalette::Inactive, QColorGroup::Background },
    // Window frame.
    { CSS_VAL_WINDOWFRAME, generalgroup, "windowBackground", QPalette::Inactive, QColorGroup::Background },
    // WindowText
    { CSS_VAL_WINDOWTEXT, generalgroup, "windowForeground", QPalette::Inactive, QColorGroup::Text },
    { CSS_VAL_TEXT, generalgroup, 0, QPalette::Inactive, QColorGroup::Text },
    { 0, 0, 0, QPalette::NColorGroups, QColorGroup::NColorRoles }
};

#endif // !APPLE_CHANGES

static QColor colorForCSSValue( int css_value )
{
    // try the regular ones first
    const colorMap *col = cmap;
    while ( col->css_value && col->css_value != css_value )
        ++col;
    if ( col->css_value )
        return col->color;

#if APPLE_CHANGES
    return QColor();
#else
    const uiColors *uicol = uimap;
    while ( uicol->css_value && uicol->css_value != css_value )
        ++uicol;
    if ( !uicol->css_value ) {
        if ( css_value == CSS_VAL_INFOBACKGROUND )
            return QToolTip::palette().inactive().background();
        else if ( css_value == CSS_VAL_INFOTEXT )
            return QToolTip::palette().inactive().foreground();
        else if ( css_value == CSS_VAL_BACKGROUND ) {
            KConfig bckgrConfig("kdesktoprc", true, false); // No multi-screen support
            bckgrConfig.setGroup("Desktop0");
            // Desktop background.
            return bckgrConfig.readColorEntry("Color1", &qApp->palette().disabled().background());
        }
        return khtml::invalidColor;
    }
    
    const QPalette &pal = qApp->palette();
    QColor c = pal.color( uicol->group, uicol->role );
    if ( uicol->configEntry ) {
        KConfig *globalConfig = KGlobal::config();
        globalConfig->setGroup( uicol->configGroup );
        c = globalConfig->readColorEntry( uicol->configEntry, &c );
    }
    
    return c;
#endif
}

void CSSStyleSelector::applyDeclarations(bool applyFirst, bool isImportant,
                                         int startIndex, int endIndex)
{
    if (startIndex == -1) return;
    for (int i = startIndex; i <= endIndex; i++) {
        CSSStyleDeclarationImpl* decl = m_matchedDecls[i];
        QPtrList<CSSProperty>* props = decl->values();
        if (props) {
            QPtrListIterator<CSSProperty> propertyIt(*props);
            CSSProperty* current;
            for (propertyIt.toFirst(); (current = propertyIt.current()); ++propertyIt) {
                // give special priority to font-xxx, color properties
                if (isImportant == current->isImportant()) {
                    bool first;
                    switch(current->id())
                    {
                        case CSS_PROP_BACKGROUND:
                        case CSS_PROP_BACKGROUND_IMAGE:
                        case CSS_PROP_COLOR:
                        case CSS_PROP_DISPLAY:
                        case CSS_PROP_FONT:
                        case CSS_PROP_FONT_SIZE:
                        case CSS_PROP_FONT_STYLE:
                        case CSS_PROP_FONT_FAMILY:
                        case CSS_PROP_FONT_WEIGHT:
#if APPLE_CHANGES
                        case CSS_PROP__APPLE_TEXT_SIZE_ADJUST:
#endif
                            // these have to be applied first, because other properties use the computed
                            // values of these porperties.
                            first = true;
                            break;
                        default:
                            first = false;
                            break;
                    }
                    
                    if (first == applyFirst)
                        applyProperty(current->id(), current->value());
                }
            }
        }
    }
}

void CSSStyleSelector::applyProperty( int id, DOM::CSSValueImpl *value )
{
    //kdDebug( 6080 ) << "applying property " << prop->m_id << endl;

    CSSPrimitiveValueImpl *primitiveValue = 0;
    if(value->isPrimitiveValue()) primitiveValue = static_cast<CSSPrimitiveValueImpl *>(value);

    Length l;
    bool apply = false;

    bool isInherit = (parentNode && value->cssValueType() == CSSValue::CSS_INHERIT);
    bool isInitial = (value->cssValueType() == CSSValue::CSS_INITIAL) ||
                     (!parentNode && value->cssValueType() == CSSValue::CSS_INHERIT);

    // What follows is a list that maps the CSS properties into their corresponding front-end
    // RenderStyle values.  Shorthands (e.g. border, background) occur in this list as well and
    // are only hit when mapping "inherit" or "initial" into front-end values.
    switch(id)
    {
// ident only properties
    case CSS_PROP_BACKGROUND_ATTACHMENT:
        HANDLE_INHERIT_AND_INITIAL(backgroundAttachment, BackgroundAttachment)
        if(!primitiveValue) break;
        switch(primitiveValue->getIdent())
        {
        case CSS_VAL_FIXED:
            {
                style->setBackgroundAttachment(false);
		// only use slow repaints if we actually have a background pixmap
                if( style->backgroundImage() && view )
                    view->useSlowRepaints();
                break;
            }
        case CSS_VAL_SCROLL:
            style->setBackgroundAttachment(true);
            break;
        default:
            return;
        }
    case CSS_PROP_BACKGROUND_REPEAT:
    {
        HANDLE_INHERIT_AND_INITIAL(backgroundRepeat, BackgroundRepeat)
        if(!primitiveValue) return;
	switch(primitiveValue->getIdent())
	{
	case CSS_VAL_REPEAT:
	    style->setBackgroundRepeat( REPEAT );
	    break;
	case CSS_VAL_REPEAT_X:
	    style->setBackgroundRepeat( REPEAT_X );
	    break;
	case CSS_VAL_REPEAT_Y:
	    style->setBackgroundRepeat( REPEAT_Y );
	    break;
	case CSS_VAL_NO_REPEAT:
	    style->setBackgroundRepeat( NO_REPEAT );
	    break;
	default:
	    return;
	}
    }
    case CSS_PROP_BORDER_COLLAPSE:
        HANDLE_INHERIT_AND_INITIAL(borderCollapse, BorderCollapse)
        if(!primitiveValue) break;
        switch(primitiveValue->getIdent())
        {
        case CSS_VAL_COLLAPSE:
            st