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Functions
Properties
| GtkAdjustment * | adjustment | Read / Write |
| GStrv | icons | Read / Write |
| GtkIconSize | size | Read / Write |
| gdouble | value | Read / Write |
Object Hierarchy
GObject ╰── GInitiallyUnowned ╰── GtkWidget ╰── GtkContainer ╰── GtkBin ╰── GtkButton ╰── GtkScaleButton ╰── GtkVolumeButton
Implemented Interfaces
GtkScaleButton implements AtkImplementorIface, GtkBuildable, GtkActionable, GtkActivatable and GtkOrientable.
Description
GtkScaleButton provides a button which pops up a scale widget. This kind of widget is commonly used for volume controls in multimedia applications, and GTK+ provides a GtkVolumeButton subclass that is tailored for this use case.
CSS nodes
GtkScaleButton has a single CSS node with name button. To differentiate it from a plain GtkButton, it gets the .scale style class.
Functions
gtk_scale_button_new ()
GtkWidget * gtk_scale_button_new (GtkIconSize size,gdouble min,gdouble max,gdouble step,const gchar **icons);
Creates a GtkScaleButton, with a range between min
and max
, with
a stepping of step
.
Parameters
size |
a stock icon size (GtkIconSize). |
[type int] |
min |
the minimum value of the scale (usually 0) |
|
max |
the maximum value of the scale (usually 100) |
|
step |
the stepping of value when a scroll-wheel event, or up/down arrow event occurs (usually 2) |
|
icons |
a |
[allow-none][array zero-terminated=1] |
Since: 2.12
gtk_scale_button_set_adjustment ()
void gtk_scale_button_set_adjustment (GtkScaleButton *button,GtkAdjustment *adjustment);
Sets the GtkAdjustment to be used as a model
for the GtkScaleButton’s scale.
See gtk_range_set_adjustment() for details.
Since: 2.12
gtk_scale_button_set_icons ()
void gtk_scale_button_set_icons (GtkScaleButton *button,const gchar **icons);
Sets the icons to be used by the scale button. For details, see the “icons” property.
Since: 2.12
gtk_scale_button_set_value ()
void gtk_scale_button_set_value (GtkScaleButton *button,gdouble value);
Sets the current value of the scale; if the value is outside the minimum or maximum range values, it will be clamped to fit inside them. The scale button emits the “value-changed” signal if the value changes.
Since: 2.12
gtk_scale_button_get_adjustment ()
GtkAdjustment *
gtk_scale_button_get_adjustment (GtkScaleButton *button);
Gets the GtkAdjustment associated with the GtkScaleButton’s scale.
See gtk_range_get_adjustment() for details.
Since: 2.12
gtk_scale_button_get_value ()
gdouble
gtk_scale_button_get_value (GtkScaleButton *button);
Gets the current value of the scale button.
Since: 2.12
gtk_scale_button_get_popup ()
GtkWidget *
gtk_scale_button_get_popup (GtkScaleButton *button);
Retrieves the popup of the GtkScaleButton.
Since: 2.14
gtk_scale_button_get_plus_button ()
GtkWidget *
gtk_scale_button_get_plus_button (GtkScaleButton *button);
Retrieves the plus button of the GtkScaleButton.
Since: 2.14
gtk_scale_button_get_minus_button ()
GtkWidget *
gtk_scale_button_get_minus_button (GtkScaleButton *button);
Retrieves the minus button of the GtkScaleButton.
Since: 2.14
Property Details
The “adjustment” property
“adjustment” GtkAdjustment *
The GtkAdjustment that contains the current value of this scale button object.
Flags: Read / Write
The “icons” property
“icons” GStrv
The names of the icons to be used by the scale button. The first item in the array will be used in the button when the current value is the lowest value, the second item for the highest value. All the subsequent icons will be used for all the other values, spread evenly over the range of values.
If there's only one icon name in the icons
array, it will
be used for all the values. If only two icon names are in
the icons
array, the first one will be used for the bottom
50% of the scale, and the second one for the top 50%.
It is recommended to use at least 3 icons so that the GtkScaleButton reflects the current value of the scale better for the users.
Flags: Read / Write
Since: 2.12
The “size” property
“size” GtkIconSize
The icon size.
Flags: Read / Write
Default value: GTK_ICON_SIZE_SMALL_TOOLBAR
Signal Details
The “popdown” signal
void user_function (GtkScaleButton *button, gpointer user_data)
The ::popdown signal is a keybinding signal which gets emitted to popdown the scale widget.
The default binding for this signal is Escape.
Parameters
button |
the object which received the signal |
|
user_data |
user data set when the signal handler was connected. |
Flags: Action
Since: 2.12
The “popup” signal
void user_function (GtkScaleButton *button, gpointer user_data)
The ::popup signal is a keybinding signal which gets emitted to popup the scale widget.
The default bindings for this signal are Space, Enter and Return.
Parameters
button |
the object which received the signal |
|
user_data |
user data set when the signal handler was connected. |
Flags: Action
Since: 2.12
The “value-changed” signal
void user_function (GtkScaleButton *button, gdouble value, gpointer user_data)
The ::value-changed signal is emitted when the value field has changed.
Parameters
button |
the object which received the signal |
|
value |
the new value |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
Since: 2.12