gtkmm: Gtk::CssProvider Class Reference

gtkmm 3.14.0

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Gtk::CssProvider Class Reference

CSS-like styling for widgets, implementing the StyleProvider base class. More...

`#include <gtkmm/cssprovider.h>`

Inheritance diagram for Gtk::CssProvider:
[legend]

## Public Member Functions
virtual | ~CssProvider ()
GtkCssProvider* | gobj ()
| Provides access to the underlying C GObject. More...
const GtkCssProvider* | gobj () const
| Provides access to the underlying C GObject. More...
GtkCssProvider* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
Glib::ustring | to_string () const
| Converts the provider into a string representation in CSS format. More...
bool | load_from_data (const std::string& data)
| Loads data into this css provider, making it clear any previously loaded information. More...
bool | load_from_file (const Glib::RefPtr< const Gio::File >& file)
| Loads the data contained in file into css_provider, making it clear any previously loaded information. More...
bool | load_from_path (const std::string& path)
| Loads the data contained in path into css_provider, making it clear any previously loaded information. More...
Public Member Functions inherited from Gtk::StyleProvider
virtual | ~StyleProvider ()
GtkStyleProvider* | gobj ()
| Provides access to the underlying C GObject. More...
const GtkStyleProvider* | gobj () const
| Provides access to the underlying C GObject. More...

## Static Public Member Functions
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static Glib::RefPtr< CssProvider > | create ()
static Glib::RefPtr< CssProvider > | get_default ()
| Returns the provider containing the style settings used as a fallback for all widgets. More...
static Glib::RefPtr< CssProvider > | get_named (const Glib::ustring& name, const Glib::ustring& variant)
| Loads a theme from the usual theme paths. More...
Static Public Member Functions inherited from Gtk::StyleProvider
static void | add_interface (GType gtype_implementer)
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...

## Protected Member Functions
| CssProvider ()
Protected Member Functions inherited from Gtk::StyleProvider
| StyleProvider ()
| You should derive from this class to use it. More...

## Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gtk::CssProvider > | wrap (GtkCssProvider* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gtk::StyleProvider
Glib::RefPtr< Gtk::StyleProvider > | wrap (GtkStyleProvider* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...

## Detailed Description

CSS-like styling for widgets, implementing the StyleProvider base class.

It is able to parse CSS-like input in order to style widgets.

An application can cause GTK+ to parse a specific CSS style sheet by calling load_from_file() and adding the provider with StyleContext::add_provider() or StyleContext::add_provider_for_screen(). In addition, certain files will be read when GTK+ is initialized. See the GtkCssProvider documentation for details of these default files and details of the stylesheets.

Since gtkmm 3.0:

## Constructor & Destructor Documentation

virtual Gtk::CssProvider::~CssProvider | ( |  | ) |
| virtual

Gtk::CssProvider::CssProvider | ( |  | ) |
| protected

## Member Function Documentation

static Glib::RefPtr<CssProvider> Gtk::CssProvider::create | ( |  | ) |
| static

static Glib::RefPtr<CssProvider> Gtk::CssProvider::get_default | ( |  | ) |
| static

Returns the provider containing the style settings used as a fallback for all widgets.

Returns
  The provider used for fallback styling. This memory is owned by GTK+, and you must not free it.

static Glib::RefPtr<CssProvider> Gtk::CssProvider::get_named | ( | const Glib::ustring & | name,
|  | const Glib::ustring & | variant
| ) |  |
| static

Loads a theme from the usual theme paths.

Parameters

  name | A theme name.
  variant | Variant to load, for example, "dark", or `0` for the default.

Returns
  A Gtk::CssProvider with the theme loaded. This memory is owned by GTK+, and you must not free it.

static GType Gtk::CssProvider::get_type | ( |  | ) |
| static

Get the GType for this class, for use with the underlying GObject type system.

GtkCssProvider* Gtk::CssProvider::gobj | ( |  | ) |
| inline

Provides access to the underlying C GObject.

const GtkCssProvider* Gtk::CssProvider::gobj | ( |  | ) | const
| inline

Provides access to the underlying C GObject.

GtkCssProvider* Gtk::CssProvider::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

bool Gtk::CssProvider::load_from_data | ( | const std::string & | data | ) |

Loads data into this css provider, making it clear any previously loaded information.

Parameters

  data | CSS data loaded in memory.

Returns
  True if the data could be loaded.

bool Gtk::CssProvider::load_from_file | ( | const Glib::RefPtr< const Gio::File > & | file | ) |

Loads the data contained in file into css_provider, making it clear any previously loaded information.

Parameters

  file | File pointing to a file to load.

Returns
  `true`. The return value is deprecated and `false` will only be returned for backwards compatibility reasons if an error is not `0` and a loading error occured. To track errors while loading CSS, connect to the GtkCssProvider::parsing-error signal.

bool Gtk::CssProvider::load_from_path | ( | const std::string & | path | ) |

Loads the data contained in path into css_provider, making it clear any previously loaded information.

Parameters

  path | The path of a filename to load, in the GLib filename encoding.

Returns
  `true`. The return value is deprecated and `false` will only be returned for backwards compatibility reasons if an error is not `0` and a loading error occured. To track errors while loading CSS, connect to the GtkCssProvider::parsing-error signal.

Glib::ustring Gtk::CssProvider::to_string | ( |  | ) | const

Converts the provider into a string representation in CSS format.

Using load_from_data() with the return value from this function on a new provider created with new() will basically create a duplicate of this provider.

Since gtkmm 3.2:

Returns
  A new string representing the provider.

## Friends And Related Function Documentation

Glib::RefPtr< Gtk::CssProvider > wrap | ( | GtkCssProvider * | object,
|  | bool | take_copy = `false`
| ) |  |
| related

A Glib::wrap() method for this object.

Parameters

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns
  A C++ instance that wraps this C instance.