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<title>cairomm: Cairo::PsSurface Class Reference</title>
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CairoPsSurface
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Public Member Functions |
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List of all members
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Cairo::PsSurface Class Reference
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A PsSurface provides a way to render PostScript documents from cairo.
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More...
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Inheritance diagram for Cairo::PsSurface:
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<map name="Cairo_1_1PsSurface_inherit__map" id="Cairo_1_1PsSurface_inherit__map">
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<area shape="rect" id="node2" href="classCairo_1_1Surface.html" title="A cairo surface represents an image, either as the destination of a drawing operation or as source wh..." alt="" coords="13,5,125,32"/></map>
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<center>[legend]</center>
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Public Member Functions
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PsSurface (cairo_surface_t*cobject, bool has_reference=false)
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Create a C++ wrapper for the C instance. More...
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virtual ~PsSurface ()
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void set_size (double width_in_points, double height_in_points)
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Changes the size of a PostScript surface for the current (and subsequent) pages. More...
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void dsc_comment (std::string comment)
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Emit a comment into the PostScript output for the given surface. More...
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void dsc_begin_setup ()
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This function indicates that subsequent calls to dsc_comment() should direct comments to the Setup section of the PostScript output. More...
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void dsc_begin_page_setup ()
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This function indicates that subsequent calls to dsc_comment() should direct comments to the PageSetup section of the PostScript output. More...
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void set_eps (bool eps)
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If eps is true, the PostScript surface will output Encapsulated PostScript. More...
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bool get_eps () const
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Check whether the PostScript surface will output Encapsulated PostScript. More...
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void restrict_to_level (PsLevel level)
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Restricts the generated PostSript file to . More...
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 Public Member Functions inherited from Cairo::Surface
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Surface (cairo_surface_t*cobject, bool has_reference=false)
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Create a C++ wrapper for the C instance. More...
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Surface (const Surface&)=delete
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Surface& operator= (const Surface&)=delete
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virtual ~Surface ()
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const unsigned char* get_mime_data (const std::string& mime_type, unsigned long& length)
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Return mime data previously attached to surface using the specified mime type. More...
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void set_mime_data (const std::string& mime_type, unsigned char* data, unsigned long length, const SlotDestroy& slot_destroy)
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Attach an image in the format mime_type to surface. More...
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void unset_mime_data (const std::string& mime_type)
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Remove the data from a surface. More...
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void get_font_options (FontOptions& options) const
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Retrieves the default font rendering options for the surface. More...
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void finish ()
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This function finishes the surface and drops all references to external resources. More...
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void flush ()
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Do any pending drawing for the surface and also restore any temporary modifications cairo has made to the surface's state. More...
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void mark_dirty ()
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Tells cairo to consider the data buffer dirty. More...
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void mark_dirty (int x, int y, int width, int height)
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Marks a rectangular area of the given surface dirty. More...
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void set_device_offset (double x_offset, double y_offset)
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Sets an offset that is added to the device coordinates determined by the CTM when drawing to surface. More...
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void get_device_offset (double& x_offset, double& y_offset) const
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Returns a previous device offset set by set_device_offset(). More...
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void set_fallback_resolution (double x_pixels_per_inch, double y_pixels_per_inch)
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Set the horizontal and vertical resolution for image fallbacks. More...
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void get_fallback_resolution (double& x_pixels_per_inch, double& y_pixels_per_inch) const
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This function returns the previous fallback resolution set by set_fallback_resolution(), or default fallback resolution if never set. More...
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SurfaceType get_type () const
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Content get_content () const
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This function returns the content type of surface which indicates whether the surface contains color and/or alpha information. More...
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void copy_page ()
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Emits the current page for backends that support multiple pages, but doesn't clear it, so that the contents of the current page will be retained for the next page. More...
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void show_page ()
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Emits and clears the current page for backends that support multiple pages. More...
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bool has_show_text_glyphs () const
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Returns whether the surface supports sophisticated Context::show_text_glyphs() operations. More...
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void write_to_png (const std::string& filename)
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Writes the contents of surface to a new file filename as a PNG image. More...
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void write_to_png_stream (const SlotWriteFunc& write_func)
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Writes the Surface to the write function. More...
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void write_to_png (cairo_write_func_t write_func, void* closure)
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RefPtr< Device > get_device ()
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This function returns the device for a surface. More...
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cobject* cobj ()
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Provides acces to the underlying C cairo surface. More...
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const cobject* cobj () const
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Provides acces to the underlying C cairo surface. More...
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Static Public Member Functions
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static RefPtr< PsSurface > create (std::string filename, double width_in_points, double height_in_points)
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Creates a PsSurface with a specified dimensions that will be saved as the given filename. More...
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static RefPtr< PsSurface > create_for_stream (const SlotWriteFunc& write_func, double width_in_points, double height_in_points)
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Creates a PsSurface with a specified dimensions that will be written to the given write function instead of saved directly to disk. More...
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static RefPtr< PsSurface > create (cairo_write_func_t write_func, void* closure, double width_in_points, double height_in_points)
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static const std::vector< PsLevel > get_levels ()
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Used to retrieve the list of supported levels. More...
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static std::string level_to_string (PsLevel level)
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Get the string representation of the given level id. More...
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Static Public Member Functions inherited from Cairo::Surface
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static RefPtr< Surface > create (const RefPtr< Surface > other, Content content, int width, int height)
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Create a new surface that is as compatible as possible with an existing surface. More...
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static RefPtr< Surface > create (const RefPtr< Surface >& target, double x, double y, double width, double height)
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Create a new surface that is a rectangle within the target surface. More...
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Additional Inherited Members
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Public Types inherited from Cairo::Surface
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typedef sigc::slot< ErrorStatus, const unsigned char*, unsigned int > SlotWriteFunc
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For example: ErrorStatus my_write_func(unsigned char* data, unsigned int length); More...
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typedef sigc::slot< ErrorStatus, unsigned char*, unsigned int > SlotReadFunc
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This is the type of function which is called when a backend needs to read data from an input stream. More...
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typedef sigc::slot< void > SlotDestroy
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For instance, void on_destroy();. More...
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typedef cairo_surface_t cobject
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The underlying C cairo surface type. More...
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Protected Attributes inherited from Cairo::Surface
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cobject* m_cobject
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The underlying C cairo surface type that is wrapped by this Surface. More...
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Detailed Description
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A PsSurface provides a way to render PostScript documents from cairo.
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This surface is not rendered to the screen but instead renders the drawing to a PostScript file on disk.
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- Note
- For this Surface to be available, cairo must have been compiled with PostScript support
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Constructor & Destructor Documentation
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Cairo::PsSurface::PsSurface
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(
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cairo_surface_t *
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cobject,
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bool
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has_reference = false
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)
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explicit
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Create a C++ wrapper for the C instance.
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This C++ instance should then be given to a RefPtr.
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- Parameters
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cobjectThe C instance.
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has_referencewhether we already have a reference. Otherwise, the constructor will take an extra reference.
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virtual Cairo::PsSurface::~PsSurface
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(
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)
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virtual
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Member Function Documentation
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static RefPtr<PsSurface> Cairo::PsSurface::create
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(
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std::string
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filename,
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double
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width_in_points,
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double
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height_in_points
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)
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static
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Creates a PsSurface with a specified dimensions that will be saved as the given filename.
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- Parameters
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filenameThe name of the PostScript file to save the surface to
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width_in_pointsThe width of the PostScript document in points
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height_in_pointsThe height of the PostScript document in points
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- Examples:
- ps-surface.cc.
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static RefPtr<PsSurface> Cairo::PsSurface::create
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(
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cairo_write_func_t
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write_func,
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void *
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closure,
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double
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width_in_points,
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double
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height_in_points
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)
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static
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- Deprecated:
- use PsSurface::create_for_stream() instead
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static RefPtr<PsSurface> Cairo::PsSurface::create_for_stream
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(
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const SlotWriteFunc&
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write_func,
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double
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width_in_points,
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double
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height_in_points
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)
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static
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Creates a PsSurface with a specified dimensions that will be written to the given write function instead of saved directly to disk.
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- Parameters
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write_funcThe function to be called when the backend needs to write data to an output stream
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width_in_pointsThe width of the PostScript document in points
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height_in_pointsThe height of the PostScript document in points
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- Since
- 1.8
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void Cairo::PsSurface::dsc_begin_page_setup
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(
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This function indicates that subsequent calls to dsc_comment() should direct comments to the PageSetup section of the PostScript output.
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This function call is only needed for the first page of a surface. It should be called after any call to dsc_begin_setup() and before any drawing is performed to the surface.
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void Cairo::PsSurface::dsc_begin_setup
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(
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)
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This function indicates that subsequent calls to dsc_comment() should direct comments to the Setup section of the PostScript output.
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This function should be called at most once per surface, and must be called before any call to dsc_begin_page_setup() and before any drawing is performed to the surface.
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void Cairo::PsSurface::dsc_comment
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(
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std::string
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comment)
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Emit a comment into the PostScript output for the given surface.
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See the cairo reference documentation for more information.
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- Parameters
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commenta comment string to be emitted into the PostScript output
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bool Cairo::PsSurface::get_eps
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(
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const
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Check whether the PostScript surface will output Encapsulated PostScript.
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- Since
- 1.8
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static const std::vector<PsLevel> Cairo::PsSurface::get_levels
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static
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Used to retrieve the list of supported levels.
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See restrict_to_level().
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- Since
- 1.6
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static std::string Cairo::PsSurface::level_to_string
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(
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PsLevel
|
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level)
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static
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Get the string representation of the given level id.
|
|
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This function will return an empty string if level id isn't valid. See get_levels() for a way to get the list of valid level ids.
|
|
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- Returns
- the string associated to given level.
|
|
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- Parameters
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levela level id
|
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- Since
- 1.6
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void Cairo::PsSurface::restrict_to_level
|
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(
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PsLevel
|
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level)
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Restricts the generated PostSript file to .
|
|
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See get_levels() for a list of available level values that can be used here.
|
|
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This function should only be called before any drawing operations have been performed on the given surface. The simplest way to do this is to call this function immediately after creating the surface.
|
|
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- Parameters
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|
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|
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levelPostScript level
|
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- Since
- 1.6
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void Cairo::PsSurface::set_eps
|
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(
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bool
|
|
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eps)
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If eps is true, the PostScript surface will output Encapsulated PostScript.
|
|
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This function should only be called before any drawing operations have been performed on the current page. The simplest way to do this is to call this function immediately after creating the surface. An Encapsulated Postscript file should never contain more than one page.
|
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- Since
- 1.6
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void Cairo::PsSurface::set_size
|
|
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(
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double
|
|
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width_in_points,
|
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double
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height_in_points
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)
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Changes the size of a PostScript surface for the current (and subsequent) pages.
|
|
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This function should only be called before any drawing operations have been performed on the current page. The simplest way to do this is to call this function immediately after creating the surface or immediately after completing a page with either Context::show_page() or Context::copy_page().
|
|
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- Parameters
|
|
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|
|
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width_in_pointsnew surface width, in points (1 point == 1/72.0 inch)
|
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height_in_pointsnew surface height, in points (1 point == 1/72.0 inch)
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The documentation for this class was generated from the following file:
|
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cairomm/surface.h
|
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<address class="footer"><small>
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Generated on Mon Sep 21 2015 21:56:36 for cairomm by
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Packit Service |
e3b512 |
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Packit Service |
e3b512 |
1.8.9.1
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Packit Service |
e3b512 |
</small></address>
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Packit Service |
e3b512 |
</body>
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Packit Service |
e3b512 |
</html>
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