/**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QCSSPARSER_P_H #define QCSSPARSER_P_H // // W A R N I N G // ------------- // // This file is not part of the Qt API. It exists for the convenience // of the QLibrary class. This header file may change from // version to version without notice, or even be removed. // // We mean it. // #include #include #include #include #include #include #include #include #include #include #ifndef QT_NO_CSSPARSER // VxWorks defines NONE as (-1) "for times when NULL won't do" #if defined(Q_OS_VXWORKS) && defined(NONE) # undef NONE #endif QT_BEGIN_NAMESPACE namespace QCss { enum Property { UnknownProperty, BackgroundColor, Color, Float, Font, FontFamily, FontSize, FontStyle, FontWeight, Margin, MarginBottom, MarginLeft, MarginRight, MarginTop, QtBlockIndent, QtListIndent, QtParagraphType, QtTableType, QtUserState, TextDecoration, TextIndent, TextUnderlineStyle, VerticalAlignment, Whitespace, QtSelectionForeground, QtSelectionBackground, Border, BorderLeft, BorderRight, BorderTop, BorderBottom, Padding, PaddingLeft, PaddingRight, PaddingTop, PaddingBottom, PageBreakBefore, PageBreakAfter, QtAlternateBackground, BorderLeftStyle, BorderRightStyle, BorderTopStyle, BorderBottomStyle, BorderStyles, BorderLeftColor, BorderRightColor, BorderTopColor, BorderBottomColor, BorderColor, BorderLeftWidth, BorderRightWidth, BorderTopWidth, BorderBottomWidth, BorderWidth, BorderTopLeftRadius, BorderTopRightRadius, BorderBottomLeftRadius, BorderBottomRightRadius, BorderRadius, Background, BackgroundOrigin, BackgroundClip, BackgroundRepeat, BackgroundPosition, BackgroundAttachment, BackgroundImage, BorderImage, QtSpacing, Width, Height, MinimumWidth, MinimumHeight, MaximumWidth, MaximumHeight, QtImage, Left, Right, Top, Bottom, QtOrigin, QtPosition, Position, QtStyleFeatures, QtBackgroundRole, ListStyleType, ListStyle, QtImageAlignment, TextAlignment, Outline, OutlineOffset, OutlineWidth, OutlineColor, OutlineStyle, OutlineRadius, OutlineTopLeftRadius, OutlineTopRightRadius, OutlineBottomLeftRadius, OutlineBottomRightRadius, FontVariant, TextTransform, QtListNumberPrefix, QtListNumberSuffix, LineHeight, NumProperties }; enum KnownValue { UnknownValue, Value_Normal, Value_Pre, Value_NoWrap, Value_PreWrap, Value_Small, Value_Medium, Value_Large, Value_XLarge, Value_XXLarge, Value_Italic, Value_Oblique, Value_Bold, Value_Underline, Value_Overline, Value_LineThrough, Value_Sub, Value_Super, Value_Left, Value_Right, Value_Top, Value_Bottom, Value_Center, Value_Native, Value_Solid, Value_Dotted, Value_Dashed, Value_DotDash, Value_DotDotDash, Value_Double, Value_Groove, Value_Ridge, Value_Inset, Value_Outset, Value_Wave, Value_Middle, Value_Auto, Value_Always, Value_None, Value_Transparent, Value_Disc, Value_Circle, Value_Square, Value_Decimal, Value_LowerAlpha, Value_UpperAlpha, Value_LowerRoman, Value_UpperRoman, Value_SmallCaps, Value_Uppercase, Value_Lowercase, /* keep these in same order as QPalette::ColorRole */ Value_FirstColorRole, Value_WindowText = Value_FirstColorRole, Value_Button, Value_Light, Value_Midlight, Value_Dark, Value_Mid, Value_Text, Value_BrightText, Value_ButtonText, Value_Base, Value_Window, Value_Shadow, Value_Highlight, Value_HighlightedText, Value_Link, Value_LinkVisited, Value_AlternateBase, Value_LastColorRole = Value_AlternateBase, Value_Disabled, Value_Active, Value_Selected, Value_On, Value_Off, NumKnownValues }; enum BorderStyle { BorderStyle_Unknown, BorderStyle_None, BorderStyle_Dotted, BorderStyle_Dashed, BorderStyle_Solid, BorderStyle_Double, BorderStyle_DotDash, BorderStyle_DotDotDash, BorderStyle_Groove, BorderStyle_Ridge, BorderStyle_Inset, BorderStyle_Outset, BorderStyle_Native, NumKnownBorderStyles }; enum Edge { TopEdge, RightEdge, BottomEdge, LeftEdge, NumEdges }; enum Corner { TopLeftCorner, TopRightCorner, BottomLeftCorner, BottomRightCorner }; enum TileMode { TileMode_Unknown, TileMode_Round, TileMode_Stretch, TileMode_Repeat, NumKnownTileModes }; enum Repeat { Repeat_Unknown, Repeat_None, Repeat_X, Repeat_Y, Repeat_XY, NumKnownRepeats }; enum Origin { Origin_Unknown, Origin_Padding, Origin_Border, Origin_Content, Origin_Margin, NumKnownOrigins }; enum PositionMode { PositionMode_Unknown, PositionMode_Static, PositionMode_Relative, PositionMode_Absolute, PositionMode_Fixed, NumKnownPositionModes }; enum Attachment { Attachment_Unknown, Attachment_Fixed, Attachment_Scroll, NumKnownAttachments }; enum StyleFeature { StyleFeature_None = 0, StyleFeature_BackgroundColor = 1, StyleFeature_BackgroundGradient = 2, NumKnownStyleFeatures = 4 }; struct Q_GUI_EXPORT Value { enum Type { Unknown, Number, Percentage, Length, String, Identifier, KnownIdentifier, Uri, Color, Function, TermOperatorSlash, TermOperatorComma }; inline Value() : type(Unknown) { } Type type; QVariant variant; QString toString() const; }; struct ColorData { ColorData() : role(QPalette::NoRole), type(Invalid) {} ColorData(const QColor &col) : color(col), role(QPalette::NoRole), type(Color) {} ColorData(QPalette::ColorRole r) : role(r), type(Role) {} QColor color; QPalette::ColorRole role; enum { Invalid, Color, Role} type; }; struct BrushData { BrushData() : role(QPalette::NoRole), type(Invalid) {} BrushData(const QBrush &br) : brush(br), role(QPalette::NoRole), type(Brush) {} BrushData(QPalette::ColorRole r) : role(r), type(Role) {} QBrush brush; QPalette::ColorRole role; enum { Invalid, Brush, Role, DependsOnThePalette } type; }; struct BackgroundData { BrushData brush; QString image; Repeat repeat; Qt::Alignment alignment; }; struct LengthData { qreal number; enum { None, Px, Ex, Em } unit; }; struct BorderData { LengthData width; BorderStyle style; BrushData color; }; // 1. StyleRule - x:hover, y:clicked > z:checked { prop1: value1; prop2: value2; } // 2. QVector - x:hover, y:clicked z:checked // 3. QVector - y:clicked z:checked // 4. QVector - { prop1: value1; prop2: value2; } // 5. Declaration - prop1: value1; struct Q_AUTOTEST_EXPORT Declaration { struct DeclarationData : public QSharedData { inline DeclarationData() : propertyId(UnknownProperty), important(false) {} QString property; Property propertyId; QVector values; QVariant parsed; bool important; }; QExplicitlySharedDataPointer d; inline Declaration() : d(new DeclarationData()) {} inline bool isEmpty() const { return d->property.isEmpty() && d->propertyId == UnknownProperty; } // helper functions QColor colorValue(const QPalette & = QPalette()) const; void colorValues(QColor *c, const QPalette & = QPalette()) const; QBrush brushValue(const QPalette & = QPalette()) const; void brushValues(QBrush *c, const QPalette & = QPalette()) const; BorderStyle styleValue() const; void styleValues(BorderStyle *s) const; Origin originValue() const; Repeat repeatValue() const; Qt::Alignment alignmentValue() const; PositionMode positionValue() const; Attachment attachmentValue() const; int styleFeaturesValue() const; bool intValue(int *i, const char *unit = 0) const; bool realValue(qreal *r, const char *unit = 0) const; QSize sizeValue() const; QRect rectValue() const; QString uriValue() const; QIcon iconValue() const; void borderImageValue(QString *image, int *cuts, TileMode *h, TileMode *v) const; }; const quint64 PseudoClass_Unknown = Q_UINT64_C(0x0000000000000000); const quint64 PseudoClass_Enabled = Q_UINT64_C(0x0000000000000001); const quint64 PseudoClass_Disabled = Q_UINT64_C(0x0000000000000002); const quint64 PseudoClass_Pressed = Q_UINT64_C(0x0000000000000004); const quint64 PseudoClass_Focus = Q_UINT64_C(0x0000000000000008); const quint64 PseudoClass_Hover = Q_UINT64_C(0x0000000000000010); const quint64 PseudoClass_Checked = Q_UINT64_C(0x0000000000000020); const quint64 PseudoClass_Unchecked = Q_UINT64_C(0x0000000000000040); const quint64 PseudoClass_Indeterminate = Q_UINT64_C(0x0000000000000080); const quint64 PseudoClass_Unspecified = Q_UINT64_C(0x0000000000000100); const quint64 PseudoClass_Selected = Q_UINT64_C(0x0000000000000200); const quint64 PseudoClass_Horizontal = Q_UINT64_C(0x0000000000000400); const quint64 PseudoClass_Vertical = Q_UINT64_C(0x0000000000000800); const quint64 PseudoClass_Window = Q_UINT64_C(0x0000000000001000); const quint64 PseudoClass_Children = Q_UINT64_C(0x0000000000002000); const quint64 PseudoClass_Sibling = Q_UINT64_C(0x0000000000004000); const quint64 PseudoClass_Default = Q_UINT64_C(0x0000000000008000); const quint64 PseudoClass_First = Q_UINT64_C(0x0000000000010000); const quint64 PseudoClass_Last = Q_UINT64_C(0x0000000000020000); const quint64 PseudoClass_Middle = Q_UINT64_C(0x0000000000040000); const quint64 PseudoClass_OnlyOne = Q_UINT64_C(0x0000000000080000); const quint64 PseudoClass_PreviousSelected = Q_UINT64_C(0x0000000000100000); const quint64 PseudoClass_NextSelected = Q_UINT64_C(0x0000000000200000); const quint64 PseudoClass_Flat = Q_UINT64_C(0x0000000000400000); const quint64 PseudoClass_Left = Q_UINT64_C(0x0000000000800000); const quint64 PseudoClass_Right = Q_UINT64_C(0x0000000001000000); const quint64 PseudoClass_Top = Q_UINT64_C(0x0000000002000000); const quint64 PseudoClass_Bottom = Q_UINT64_C(0x0000000004000000); const quint64 PseudoClass_Exclusive = Q_UINT64_C(0x0000000008000000); const quint64 PseudoClass_NonExclusive = Q_UINT64_C(0x0000000010000000); const quint64 PseudoClass_Frameless = Q_UINT64_C(0x0000000020000000); const quint64 PseudoClass_ReadOnly = Q_UINT64_C(0x0000000040000000); const quint64 PseudoClass_Active = Q_UINT64_C(0x0000000080000000); const quint64 PseudoClass_Closable = Q_UINT64_C(0x0000000100000000); const quint64 PseudoClass_Movable = Q_UINT64_C(0x0000000200000000); const quint64 PseudoClass_Floatable = Q_UINT64_C(0x0000000400000000); const quint64 PseudoClass_Minimized = Q_UINT64_C(0x0000000800000000); const quint64 PseudoClass_Maximized = Q_UINT64_C(0x0000001000000000); const quint64 PseudoClass_On = Q_UINT64_C(0x0000002000000000); const quint64 PseudoClass_Off = Q_UINT64_C(0x0000004000000000); const quint64 PseudoClass_Editable = Q_UINT64_C(0x0000008000000000); const quint64 PseudoClass_Item = Q_UINT64_C(0x0000010000000000); const quint64 PseudoClass_Closed = Q_UINT64_C(0x0000020000000000); const quint64 PseudoClass_Open = Q_UINT64_C(0x0000040000000000); const quint64 PseudoClass_EditFocus = Q_UINT64_C(0x0000080000000000); const quint64 PseudoClass_Alternate = Q_UINT64_C(0x0000100000000000); // The Any specifier is never generated, but can be used as a wildcard in searches. const quint64 PseudoClass_Any = Q_UINT64_C(0x0000ffffffffffff); const int NumPseudos = 46; struct Pseudo { Pseudo() : type(0), negated(false) { } quint64 type; QString name; QString function; bool negated; }; struct AttributeSelector { enum ValueMatchType { NoMatch, MatchEqual, MatchContains, MatchBeginsWith }; inline AttributeSelector() : valueMatchCriterium(NoMatch) {} QString name; QString value; ValueMatchType valueMatchCriterium; }; struct BasicSelector { inline BasicSelector() : relationToNext(NoRelation) {} enum Relation { NoRelation, MatchNextSelectorIfAncestor, MatchNextSelectorIfParent, MatchNextSelectorIfPreceeds }; QString elementName; QStringList ids; QVector pseudos; QVector attributeSelectors; Relation relationToNext; }; struct Q_AUTOTEST_EXPORT Selector { QVector basicSelectors; int specificity() const; quint64 pseudoClass(quint64 *negated = 0) const; QString pseudoElement() const; }; struct StyleRule; struct MediaRule; struct PageRule; struct ImportRule; struct Q_AUTOTEST_EXPORT ValueExtractor { ValueExtractor(const QVector &declarations, const QPalette & = QPalette()); bool extractFont(QFont *font, int *fontSizeAdjustment); bool extractBackground(QBrush *, QString *, Repeat *, Qt::Alignment *, QCss::Origin *, QCss::Attachment *, QCss::Origin *); bool extractGeometry(int *w, int *h, int *minw, int *minh, int *maxw, int *maxh); bool extractPosition(int *l, int *t, int *r, int *b, QCss::Origin *, Qt::Alignment *, QCss::PositionMode *, Qt::Alignment *); bool extractBox(int *margins, int *paddings, int *spacing = 0); bool extractBorder(int *borders, QBrush *colors, BorderStyle *Styles, QSize *radii); bool extractOutline(int *borders, QBrush *colors, BorderStyle *Styles, QSize *radii, int *offsets); bool extractPalette(QBrush *fg, QBrush *sfg, QBrush *sbg, QBrush *abg); int extractStyleFeatures(); bool extractImage(QIcon *icon, Qt::Alignment *a, QSize *size); int lengthValue(const Declaration &decl); private: void extractFont(); void borderValue(const Declaration &decl, int *width, QCss::BorderStyle *style, QBrush *color); LengthData lengthValue(const Value& v); void lengthValues(const Declaration &decl, int *m); QSize sizeValue(const Declaration &decl); void sizeValues(const Declaration &decl, QSize *radii); QVector declarations; QFont f; int adjustment; int fontExtracted; QPalette pal; }; struct StyleRule { StyleRule() : order(0) { } QVector selectors; QVector declarations; int order; }; struct MediaRule { QStringList media; QVector styleRules; }; struct PageRule { QString selector; QVector declarations; }; struct ImportRule { QString href; QStringList media; }; enum StyleSheetOrigin { StyleSheetOrigin_Unspecified, StyleSheetOrigin_UserAgent, StyleSheetOrigin_User, StyleSheetOrigin_Author, StyleSheetOrigin_Inline }; struct StyleSheet { StyleSheet() : origin(StyleSheetOrigin_Unspecified), depth(0) { } QVector styleRules; //only contains rules that are not indexed QVector mediaRules; QVector pageRules; QVector importRules; StyleSheetOrigin origin; int depth; // applicable only for inline style sheets QMultiHash nameIndex; QMultiHash idIndex; void buildIndexes(Qt::CaseSensitivity nameCaseSensitivity = Qt::CaseSensitive); }; class Q_GUI_EXPORT StyleSelector { public: StyleSelector() : nameCaseSensitivity(Qt::CaseSensitive) {} virtual ~StyleSelector(); union NodePtr { void *ptr; int id; }; QVector styleRulesForNode(NodePtr node); QVector declarationsForNode(NodePtr node, const char *extraPseudo = 0); virtual bool nodeNameEquals(NodePtr node, const QString& nodeName) const; virtual QString attribute(NodePtr node, const QString &name) const = 0; virtual bool hasAttributes(NodePtr node) const = 0; virtual QStringList nodeIds(NodePtr node) const; virtual QStringList nodeNames(NodePtr node) const = 0; virtual bool isNullNode(NodePtr node) const = 0; virtual NodePtr parentNode(NodePtr node) const = 0; virtual NodePtr previousSiblingNode(NodePtr node) const = 0; virtual NodePtr duplicateNode(NodePtr node) const = 0; virtual void freeNode(NodePtr node) const = 0; QVector styleSheets; QString medium; Qt::CaseSensitivity nameCaseSensitivity; private: void matchRule(NodePtr node, const StyleRule &rules, StyleSheetOrigin origin, int depth, QMap *weightedRules); bool selectorMatches(const Selector &rule, NodePtr node); bool basicSelectorMatches(const BasicSelector &rule, NodePtr node); }; enum TokenType { NONE, S, CDO, CDC, INCLUDES, DASHMATCH, LBRACE, PLUS, GREATER, COMMA, STRING, INVALID, IDENT, HASH, ATKEYWORD_SYM, EXCLAMATION_SYM, LENGTH, PERCENTAGE, NUMBER, FUNCTION, COLON, SEMICOLON, RBRACE, SLASH, MINUS, DOT, STAR, LBRACKET, RBRACKET, EQUAL, LPAREN, RPAREN, OR }; struct Q_GUI_EXPORT Symbol { inline Symbol() : token(NONE), start(0), len(-1) {} TokenType token; QString text; int start, len; QString lexem() const; }; class Q_AUTOTEST_EXPORT Scanner { public: static QString preprocess(const QString &input, bool *hasEscapeSequences = 0); static void scan(const QString &preprocessedInput, QVector *symbols); }; class Q_GUI_EXPORT Parser { public: Parser(); Parser(const QString &css, bool file = false); void init(const QString &css, bool file = false); bool parse(StyleSheet *styleSheet, Qt::CaseSensitivity nameCaseSensitivity = Qt::CaseSensitive); Symbol errorSymbol(); bool parseImport(ImportRule *importRule); bool parseMedia(MediaRule *mediaRule); bool parseMedium(QStringList *media); bool parsePage(PageRule *pageRule); bool parsePseudoPage(QString *selector); bool parseNextOperator(Value *value); bool parseCombinator(BasicSelector::Relation *relation); bool parseProperty(Declaration *decl); bool parseRuleset(StyleRule *styleRule); bool parseSelector(Selector *sel); bool parseSimpleSelector(BasicSelector *basicSel); bool parseClass(QString *name); bool parseElementName(QString *name); bool parseAttrib(AttributeSelector *attr); bool parsePseudo(Pseudo *pseudo); bool parseNextDeclaration(Declaration *declaration); bool parsePrio(Declaration *declaration); bool parseExpr(QVector *values); bool parseTerm(Value *value); bool parseFunction(QString *name, QString *args); bool parseHexColor(QColor *col); bool testAndParseUri(QString *uri); inline bool testRuleset() { return testSelector(); } inline bool testSelector() { return testSimpleSelector(); } inline bool parseNextSelector(Selector *sel) { if (!testSelector()) return recordError(); return parseSelector(sel); } bool testSimpleSelector(); inline bool parseNextSimpleSelector(BasicSelector *basicSel) { if (!testSimpleSelector()) return recordError(); return parseSimpleSelector(basicSel); } inline bool testElementName() { return test(IDENT) || test(STAR); } inline bool testClass() { return test(DOT); } inline bool testAttrib() { return test(LBRACKET); } inline bool testPseudo() { return test(COLON); } inline bool testMedium() { return test(IDENT); } inline bool parseNextMedium(QStringList *media) { if (!testMedium()) return recordError(); return parseMedium(media); } inline bool testPseudoPage() { return test(COLON); } inline bool testImport() { return testTokenAndEndsWith(ATKEYWORD_SYM, QLatin1String("import")); } inline bool testMedia() { return testTokenAndEndsWith(ATKEYWORD_SYM, QLatin1String("media")); } inline bool testPage() { return testTokenAndEndsWith(ATKEYWORD_SYM, QLatin1String("page")); } inline bool testCombinator() { return test(PLUS) || test(GREATER) || test(S); } inline bool testProperty() { return test(IDENT); } bool testTerm(); inline bool testExpr() { return testTerm(); } inline bool parseNextExpr(QVector *values) { if (!testExpr()) return recordError(); return parseExpr(values); } bool testPrio(); inline bool testHexColor() { return test(HASH); } inline bool testFunction() { return test(FUNCTION); } inline bool parseNextFunction(QString *name, QString *args) { if (!testFunction()) return recordError(); return parseFunction(name, args); } inline bool lookupElementName() const { return lookup() == IDENT || lookup() == STAR; } inline void skipSpace() { while (test(S)) {}; } inline bool hasNext() const { return index < symbols.count(); } inline TokenType next() { return symbols.at(index++).token; } bool next(TokenType t); bool test(TokenType t); inline void prev() { index--; } inline const Symbol &symbol() const { return symbols.at(index - 1); } inline QString lexem() const { return symbol().lexem(); } QString unquotedLexem() const; QString lexemUntil(TokenType t); bool until(TokenType target, TokenType target2 = NONE); inline TokenType lookup() const { return (index - 1) < symbols.count() ? symbols.at(index - 1).token : NONE; } bool testTokenAndEndsWith(TokenType t, const QLatin1String &str); inline bool recordError() { errorIndex = index; return false; } QVector symbols; int index; int errorIndex; bool hasEscapeSequences; QString sourcePath; }; } // namespace QCss QT_END_NAMESPACE Q_DECLARE_METATYPE( QCss::BackgroundData ) Q_DECLARE_METATYPE( QCss::LengthData ) Q_DECLARE_METATYPE( QCss::BorderData ) #endif // QT_NO_CSSPARSER #endif