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CEGUIFalDimensions.h - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\ogre\include\CEGUI\falagard\CEGUIFalDimensions.h
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/*********************************************************************** filename: CEGUIFalDimensions.h created: Mon Jun 13 2005 author: Paul D Turner
*************************************************************************/ /*************************************************************************** * Copyright (C) 2004 - 2006 Paul D Turner & The CEGUI Development Team * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. ***************************************************************************/ #ifndef _CEGUIFalDimensions_h_ #define _CEGUIFalDimensions_h_ #include "falagard/CEGUIFalEnums.h" #include "CEGUIString.h" #include "CEGUIUDim.h" #include "CEGUIXMLSerializer.h" // Start of CEGUI namespace section namespace CEGUI { /*! \brief Abstract interface for a generic 'dimension' class. */ class CEGUIEXPORT BaseDim { public: BaseDim(); virtual ~BaseDim(); /*! \brief Return a value that represents this dimension as absolute pixels. \param wnd Window object that may be used by the specialised class to aid in calculating the final value. \return float value which represents, in pixels, the same value as this BaseDim. */ float getValue(const Window& wnd) const; /*! \brief Return a value that represents this dimension as absolute pixels. \param wnd Window object that may be used by the specialised class to aid in calculating the final value (typically would be used to obtain window/widget dimensions). \param container Rect object which describes an area to be considered as the base area when calculating the final value. Basically this means that relative values are calculated from the dimensions of this Rect. \return float value which represents, in pixels, the same value as this BaseDim. */ float getValue(const Window& wnd, const Rect& container) const; /*! \brief Create an exact copy of the specialised class and return it as a pointer to a BaseDim object. Since the system needs to be able to copy objects derived from BaseDim, but only has knowledge of the BaseDim interface, this clone method is provided to prevent slicing issues. \return BaseDim object pointer */ BaseDim* clone() const; /*! \brief Return the DimensionOperator set for this BaseDim based object. \return One of the DimensionOperator enumerated values representing a mathematical operation to be performed upon this BaseDim using the set operand. */ DimensionOperator getDimensionOperator() const; /*! \brief Set the DimensionOperator set for this BaseDim based object. \param op One of the DimensionOperator enumerated values representing a mathematical operation to be performed upon this BaseDim using the set operand. \return Nothing. */ void setDimensionOperator(DimensionOperator op); /*! \brief Return a pointer to the BaseDim set to be used as the other operand. \return Pointer to the BaseDim object. */ const BaseDim* getOperand() const; /*! \brief Set the BaseDim set to be used as the other operand in calculations for this BaseDim. \param operand sub-class of BaseDim representing the 'other' operand. The given object will be cloned; no transfer of ownership occurrs for the passed object. \return Nothing. */ void setOperand(const BaseDim& operand); /*! \brief Writes an xml representation of this BaseDim to \a out_stream. \param xml_stream Stream where xml data should be output. \return Nothing. */ void writeXMLToStream(XMLSerializer& xml_stream) const; protected: /*! \brief Implementataion method to return the base value for this BaseDim. This method should not attempt to apply the mathematical operator; this is handled automatically. */ virtual float getValue_impl(const Window& wnd) const = 0; /*! \brief Implementataion method to return the base value for this BaseDim. This method should not attempt to apply the mathematical operator; this is handled automatically by BaseDim. */ virtual float getValue_impl(const Window& wnd, const Rect& container) const = 0; /*! \brief Implementataion method to return a clone of this sub-class of BaseDim. This method should not attempt to clone the mathematical operator or operand; theis is handled automatically by BaseDim. */ virtual BaseDim* clone_impl() const = 0; /*! \brief Implementataion method to output real xml element name. */ virtual void writeXMLElementName_impl(XMLSerializer& xml_stream) const = 0; /*! \brief Implementataion method to create the element attributes */ virtual void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const = 0; private: DimensionOperator d_operator; BaseDim* d_operand; }; /*! \brief Dimension type that represents an absolute pixel value. Implements BaseDim interface. */ class CEGUIEXPORT AbsoluteDim : public BaseDim { public: /*! \brief Constructor. \param val float value to be assigned to the AbsoluteDim. */ AbsoluteDim(float val); /*! \brief Set the current value of the AbsoluteDim. */ void setValue(float val); protected: // Implementation of the base class interface float getValue_impl(const Window& wnd) const; float getValue_impl(const Window& wnd, const Rect& container) const; void writeXMLElementName_impl(XMLSerializer& xml_stream) const; void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const; BaseDim* clone_impl() const; private: float d_val; //!< holds pixel value for the AbsoluteDim. }; /*! \brief Dimension type that represents some dimension of a named Image. Implements BaseDim interface. */ class CEGUIEXPORT ImageDim : public BaseDim { public: /*! \brief Constructor. \param imageset String object holding the name of the imagseset which contains the image. \param image String object holding the name of the image. \param dim DimensionType value indicating which dimension of the described image that this ImageDim is to represent. */ ImageDim(const String& imageset, const String& image, DimensionType dim); /*! \brief Sets the source image information for this ImageDim. \param imageset String object holding the name of the imagseset which contains the image. \param image String object holding the name of the image. \return Nothing. */ void setSourceImage(const String& imageset, const String& image); /*! \brief Sets the source dimension type for this ImageDim. \param dim DimensionType value indicating which dimension of the described image that this ImageDim is to represent. \return Nothing. */ void setSourceDimension(DimensionType dim); protected: // Implementation of the base class interface float getValue_impl(const Window& wnd) const; float getValue_impl(const Window& wnd, const Rect& container) const; void writeXMLElementName_impl(XMLSerializer& xml_stream) const; void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const; BaseDim* clone_impl() const; private: String d_imageset; //!< name of the Imageset containing the image. String d_image; //!< name of the Image. DimensionType d_what; //!< the dimension of the image that we are to represent. }; /*! \brief Dimension type that represents some dimension of a Window/widget. Implements BaseDim interface. When calculating the final pixel value for the dimension, a target widget name is built by appending the name suffix specified for the WidgetDim to the name of the window passed to getValue, we then find the window/widget with that name - the final value of the dimension is taken from this window/widget. */ class CEGUIEXPORT WidgetDim : public BaseDim { public: /*! \brief Constructor. \param name String object holding the name suffix for a window/widget. \param dim DimensionType value indicating which dimension of the described image that this ImageDim is to represent. */ WidgetDim(const String& name, DimensionType dim); /*! \brief Set the name suffix to use for this WidgetDim. \param name String object holding the name suffix for a window/widget. \return Nothing. */ void setWidgetName(const String& name); /*! \brief Sets the source dimension type for this WidgetDim. \param dim DimensionType value indicating which dimension of the described image that this WidgetDim is to represent. \return Nothing. */ void setSourceDimension(DimensionType dim); protected: // Implementation of the base class interface float getValue_impl(const Window& wnd) const; float getValue_impl(const Window& wnd, const Rect& container) const; void writeXMLElementName_impl(XMLSerializer& xml_stream) const; void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const; BaseDim* clone_impl() const; private: String d_widgetName; //!< Holds target window name suffix. DimensionType d_what; //!< the dimension of the target window that we are to represent. }; /*! \brief Dimension type that represents an Unified dimension. Implements BaseDim interface. */ class CEGUIEXPORT UnifiedDim : public BaseDim { public: /*! \brief Constructor. \param value UDim holding the value to assign to this UnifiedDim. \param dim DimensionType value indicating what this UnifiedDim is to represent. This is required because we need to know what part of the base Window that the UDim scale component is to operate against. */ UnifiedDim(const UDim& value, DimensionType dim); protected: // Implementation of the base class interface float getValue_impl(const Window& wnd) const; float getValue_impl(const Window& wnd, const Rect& container) const; void writeXMLElementName_impl(XMLSerializer& xml_stream) const; void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const; BaseDim* clone_impl() const; private: UDim d_value; //!< The UDim value. DimensionType d_what; //!< what we represent. }; /*! \brief Dimension type that represents some metric of a Font. Implements BaseDim interface. */ class CEGUIEXPORT FontDim : public BaseDim { public: /*! \brief Constructor. \param name String holding the name suffix of the window to be accessed to obtain the font and / or text strings to be used when these items are not explicitly given. \param font String holding the name of the font to use for this dimension. If the string is empty, the font assigned to the window passed to getValue will be used. \param text String holding the text to be measured for horizontal extent. If this is empty, the text from the window passed to getValue will be used. \param metric One of the FontMetricType values indicating what we should represent. \param padding constant pixel padding value to be added. */ FontDim(const String& name, const String& font, const String& text, FontMetricType metric, float padding = 0); protected: // Implementation of the base class interface float getValue_impl(const Window& wnd) const; float getValue_impl(const Window& wnd, const Rect& container) const; void writeXMLElementName_impl(XMLSerializer& xml_stream) const; void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const; BaseDim* clone_impl() const; private: String d_font; //!< Name of Font. If empty font will be taken from Window. String d_text; //!< String to measure for extents, if empty will use window text. String d_childSuffix; //!< String to hold the name suffix of the window to use for fetching missing font and/or text. FontMetricType d_metric; //!< what metric we represent. float d_padding; //!< padding value to be added. }; /*! \brief Dimension type that represents the value of a Window property. Implements BaseDim interface. */ class CEGUIEXPORT PropertyDim : public BaseDim { public: /*! \brief Constructor. \param name String holding the name suffix of the window on which the property is to be accessed. \param property String object holding the name of the property this PropertyDim represents the value of. The property named should represent a simple float value. \param type DimensionType value indicating what dimension named property represents. */ PropertyDim(const String& name, const String& property, DimensionType type); protected: // Implementation of the base class interface float getValue_impl(const Window& wnd) const; float getValue_impl(const Window& wnd, const Rect& container) const; void writeXMLElementName_impl(XMLSerializer& xml_stream) const; void writeXMLElementAttributes_impl(XMLSerializer& xml_stream) const; BaseDim* clone_impl() const; private: String d_property; //!< Propery that this object represents. String d_childSuffix; //!< String to hold the name suffix of the child to access the property form. DimensionType d_type; //!< String to hold the type of dimension }; /*! \brief Class representing some kind of dimension. The key thing to understand about Dimension is that it contains not just a dimensional value, but also a record of what the dimension value is supposed to represent. (e.g. a co-ordinate on the x axis, or the height of something). */ class CEGUIEXPORT Dimension { public: /*! \brief Constructor */ Dimension(); /*! \brief Destructor */ ~Dimension(); /*! \brief Constructor \param dim object based on subclass of BaseDim which holds the dimensional value. \param type DimensionType value indicating what dimension this object is to represent. */ Dimension(const BaseDim& dim, DimensionType type); /*! \brief Copy constructor */ Dimension(const Dimension& other); /*! \brief Assignment operator */ Dimension& operator=(const Dimension& other); /*! \brief return the BaseDim object currently used as the value for this Dimension. \return const reference to the BaseDim sub-class object which contains the value for this Dimension. */ const BaseDim& getBaseDimension() const; /*! \brief set the current value for this Dimension. \param dim object based on a subclass of BaseDim which holds the dimensional value. \return Nothing. */ void setBaseDimension(const BaseDim& dim); /*! \brief Return a DimensionType value indicating what this Dimension represents. \return one of the DimensionType enumerated values. */ DimensionType getDimensionType() const; /*! \brief Sets what this Dimension represents. \param type one of the DimensionType enumerated values. \return Nothing. */ void setDimensionType(DimensionType type); /*! \brief Writes an xml representation of this Dimension to \a out_stream. \param xml_stream Stream where xml data should be output. \return Nothing. */ void writeXMLToStream(XMLSerializer& xml_stream) const; private: BaseDim* d_value; //!< Pointer to the value for this Dimension. DimensionType d_type; //!< What we represent. }; /*! \brief Class that represents a target area for a widget or imagery component. This is essentially a Rect built out of Dimension objects. Of note is that what would normally be the 'right' and 'bottom' edges may alternatively represent width and height depending upon what the assigned Dimension(s) represent. */ class CEGUIEXPORT ComponentArea { public: /*! \brief Return a Rect describing the absolute pixel area represented by this ComponentArea. \param wnd Window object to be used when calculating final pixel area. \return Rect object describing the pixels area represented by this ComponentArea when using \a wnd as a reference for calculating the final pixel dimensions. */ Rect getPixelRect(const Window& wnd) const; /*! \brief Return a Rect describing the absolute pixel area represented by this ComponentArea. \param wnd Window object to be used when calculating final pixel area. \param container Rect object to be used as a base or container when converting relative dimensions. \return Rect object describing the pixels area represented by this ComponentArea when using \a wnd and \a container as a reference for calculating the final pixel dimensions. */ Rect getPixelRect(const Window& wnd, const Rect& container) const; /*! \brief Writes an xml representation of this ComponentArea to \a out_stream. \param xml_stream Stream where xml data should be output. \return Nothing. */ void writeXMLToStream(XMLSerializer& xml_stream) const; /*! \brief Return whether this ComponentArea fetches it's area via a property on the target window. \return - true if the area comes via a Propery. - false if the area is defined explicitly via the Dimension fields. */ bool isAreaFetchedFromProperty() const; /*! \brief Return the name of the property that will be used to determine the pixel area for this ComponentArea. \return String object holding the name of a Propery. */ const String& getAreaPropertySource() const; /*! \brief Set the name of the property that will be used to determine the pixel area for this ComponentArea. \param property String object holding the name of a Propery. The property should access a URect type property. \return Nothing. */ void setAreaPropertySource(const String& property); Dimension d_left; //!< Left edge of the area. Dimension d_top; //!< Top edge of the area. Dimension d_right_or_width; //!< Either the right edge or the width of the area. Dimension d_bottom_or_height; //!< Either the bototm edge or the height of the area. private: String d_areaProperty; //!< Property to access. Must be a URect style property. }; } // End of CEGUI namespace section #endif // end of guard _CEGUIFalDimensions_h_
CEGUIFalDimensions.h
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