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gtkmm
3.95.1
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This interface can be implemented by widgets which allow the user to choose a color. More...
#include <gtkmm/colorchooser.h>

Public Member Functions | |
| ColorChooser (ColorChooser&& src) noexcept | |
| ColorChooser& | operator= (ColorChooser&& src) noexcept |
| ~ColorChooser () noexcept override | |
| GtkColorChooser* | gobj () |
| Provides access to the underlying C GObject. More... | |
| const GtkColorChooser* | gobj () const |
| Provides access to the underlying C GObject. More... | |
| Gdk::RGBA | get_rgba () const |
| Gets the currently selected color. More... | |
| void | set_rgba (const Gdk::RGBA& color) |
| Sets the color. More... | |
| bool | get_use_alpha () const |
| Returns whether the color chooser shows the alpha channel. More... | |
| void | set_use_alpha (bool use_alpha=true) |
| Sets whether or not the color chooser should use the alpha channel. More... | |
| void | add_palette (Orientation orientation, int colors_per_line, const std::vector< Gdk::RGBA >& colors) |
| Adds a palette to the color chooser. More... | |
| Glib::SignalProxy< void(const Gdk::RGBA&)> | signal_color_activated () |
| Glib::PropertyProxy< Gdk::RGBA > | property_rgba () |
| The property_rgba() property contains the currently selected color, as a Gdk::RGBA struct. More... | |
| Glib::PropertyProxy_ReadOnly< Gdk::RGBA > | property_rgba () const |
| The property_rgba() property contains the currently selected color, as a Gdk::RGBA struct. More... | |
| Glib::PropertyProxy< bool > | property_use_alpha () |
When signal_use_alpha() is true, colors may have alpha (translucency) information. More... | |
| Glib::PropertyProxy_ReadOnly< bool > | property_use_alpha () const |
When signal_use_alpha() is true, colors may have alpha (translucency) information. More... | |
Public Member Functions inherited from Glib::Interface | |
| Interface () | |
| Interface (Interface &&src) noexcept | |
| Interface & | operator= (Interface &&src) noexcept |
| Interface (const Glib::Interface_Class &interface_class) | |
| Interface (GObject *castitem) | |
| ~Interface () noexcept override | |
| Interface (const Interface &)=delete | |
| Interface & | operator= (const Interface &)=delete |
| GObject * | gobj () |
| const GObject * | gobj () const |
Public Member Functions inherited from Glib::ObjectBase | |
| ObjectBase (const ObjectBase &)=delete | |
| ObjectBase & | operator= (const ObjectBase &)=delete |
| void | set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value) |
| void | get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const |
| void | set_property (const Glib::ustring &property_name, const PropertyType &value) |
| void | get_property (const Glib::ustring &property_name, PropertyType &value) const |
| PropertyType | get_property (const Glib::ustring &property_name) const |
| sigc::connection | connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void()> &slot) |
| sigc::connection | connect_property_changed (const Glib::ustring &property_name, sigc::slot< void()> &&slot) |
| void | freeze_notify () |
| void | thaw_notify () |
| virtual void | reference () const |
| virtual void | unreference () const |
| GObject * | gobj () |
| const GObject * | gobj () const |
| GObject * | gobj_copy () const |
Public Member Functions inherited from sigc::trackable | |
| trackable () noexcept | |
| trackable (const trackable &src) noexcept | |
| trackable (trackable &&src) noexcept | |
| ~trackable () | |
| void | add_destroy_notify_callback (notifiable *data, func_destroy_notify func) const |
| void | notify_callbacks () |
| trackable & | operator= (const trackable &src) |
| trackable & | operator= (trackable &&src) noexcept |
| void | remove_destroy_notify_callback (notifiable *data) const |
Static Public Member Functions | |
| 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 | |
| ColorChooser () | |
| You should derive from this class to use it. More... | |
| virtual void | on_color_activated (const Gdk::RGBA& color) |
| This is a default handler for the signal signal_color_activated(). More... | |
Protected Member Functions inherited from Glib::ObjectBase | |
| ObjectBase () | |
| ObjectBase (const char *custom_type_name) | |
| ObjectBase (const std::type_info &custom_type_info) | |
| ObjectBase (ObjectBase &&src) noexcept | |
| ObjectBase & | operator= (ObjectBase &&src) noexcept |
| virtual | ~ObjectBase () noexcept=0 |
| void | initialize (GObject *castitem) |
| void | initialize_move (GObject *castitem, Glib::ObjectBase *previous_wrapper) |
Related Functions | |
(Note that these are not member functions.) | |
| Glib::RefPtr< Gtk::ColorChooser > | wrap (GtkColorChooser* object, bool take_copy=false) |
| A Glib::wrap() method for this object. More... | |
Additional Inherited Members | |
Public Types inherited from sigc::trackable | |
| typedef internal::func_destroy_notify | func_destroy_notify |
Public Types inherited from sigc::notifiable | |
| typedef internal::func_destroy_notify | func_destroy_notify |
This interface can be implemented by widgets which allow the user to choose a color.
Depending on the situation, colors may be allowed to have alpha (translucency). The main widgets that implement this interface are ColorChooserWidget, ColorChooserDialog and ColorChooserButton.
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protected |
You should derive from this class to use it.
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noexcept |
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overridenoexcept |
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static |
| void Gtk::ColorChooser::add_palette | ( | Orientation | orientation, |
| int | colors_per_line, | ||
| const std::vector< Gdk::RGBA >& | colors | ||
| ) |
Adds a palette to the color chooser.
If orientation is horizontal, the colors are grouped in rows, with colors_per_line colors in each row. If orientation is vertical, the colors are grouped in columns instead.
The default color palette of ColorChooserWidget has 27 colors, organized in columns of 3 colors. The default gray palette has 9 grays in a single row.
The layout of the color chooser widget works best when the palettes have 9-10 columns.
Calling this function for the first time has the side effect of removing the default color and gray palettes from the color chooser.
| orientation | Orientation::HORIZONTAL if the palette should be displayed in rows, or Orientation::VERTICAL for columns |
| colors_per_line | The number of colors to show in each row/column. |
| colors | The colors of the palette. |
| Gdk::RGBA Gtk::ColorChooser::get_rgba | ( | ) | const |
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static |
Get the GType for this class, for use with the underlying GObject type system.
| bool Gtk::ColorChooser::get_use_alpha | ( | ) | const |
Returns whether the color chooser shows the alpha channel.
true if the color chooser uses the alpha channel, false if not.
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inline |
Provides access to the underlying C GObject.
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inline |
Provides access to the underlying C GObject.
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protectedvirtual |
This is a default handler for the signal signal_color_activated().
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noexcept |
| Glib::PropertyProxy< Gdk::RGBA > Gtk::ColorChooser::property_rgba | ( | ) |
The property_rgba() property contains the currently selected color, as a Gdk::RGBA struct.
The property can be set to change the current selection programmatically.
| Glib::PropertyProxy_ReadOnly< Gdk::RGBA > Gtk::ColorChooser::property_rgba | ( | ) | const |
The property_rgba() property contains the currently selected color, as a Gdk::RGBA struct.
The property can be set to change the current selection programmatically.
| Glib::PropertyProxy< bool > Gtk::ColorChooser::property_use_alpha | ( | ) |
When signal_use_alpha() is true, colors may have alpha (translucency) information.
When it is false, the Gdk::RGBA struct obtained via the Gtk::ColorChooser::property_rgba() property will be forced to have alpha == 1.
Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern).
Default value: true
| Glib::PropertyProxy_ReadOnly< bool > Gtk::ColorChooser::property_use_alpha | ( | ) | const |
When signal_use_alpha() is true, colors may have alpha (translucency) information.
When it is false, the Gdk::RGBA struct obtained via the Gtk::ColorChooser::property_rgba() property will be forced to have alpha == 1.
Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern).
Default value: true
| void Gtk::ColorChooser::set_rgba | ( | const Gdk::RGBA& | color | ) |
Sets the color.
| color | The new color. |
| void Gtk::ColorChooser::set_use_alpha | ( | bool | use_alpha = true | ) |
Sets whether or not the color chooser should use the alpha channel.
| use_alpha | true if color chooser should use alpha channel, false if not. |
| Glib::SignalProxy<void(const Gdk::RGBA&)> Gtk::ColorChooser::signal_color_activated | ( | ) |
void on_my_color_activated(const Gdk::RGBA& color)Flags: Run First
Emitted when a color is activated from the color chooser. This usually happens when the user clicks a color swatch, or a color is selected and the user presses one of the keys Space, Shift+Space, Return or Enter.
| color | The color. |
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related |
A Glib::wrap() method for this object.
| 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. |
1.8.11