Trait gtk4::prelude::AdjustmentExt

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pub trait AdjustmentExt: 'static {

Show 23 methods    // Required methods
    fn clamp_page(&self, lower: f64, upper: f64);
    fn configure(
        &self,
        value: f64,
        lower: f64,
        upper: f64,
        step_increment: f64,
        page_increment: f64,
        page_size: f64
    );
    fn lower(&self) -> f64;
    fn minimum_increment(&self) -> f64;
    fn page_increment(&self) -> f64;
    fn page_size(&self) -> f64;
    fn step_increment(&self) -> f64;
    fn upper(&self) -> f64;
    fn value(&self) -> f64;
    fn set_lower(&self, lower: f64);
    fn set_page_increment(&self, page_increment: f64);
    fn set_page_size(&self, page_size: f64);
    fn set_step_increment(&self, step_increment: f64);
    fn set_upper(&self, upper: f64);
    fn set_value(&self, value: f64);
    fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
    fn connect_value_changed<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_lower_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_page_increment_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_page_size_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_step_increment_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_upper_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_value_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;

}
Expand description

Trait containing all Adjustment methods.

Implementors

Adjustment

Required Methods§

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fn clamp_page(&self, lower: f64, upper: f64)

Updates the value property to ensure that the range between @lower and @upper is in the current page.

The current page goes from value to value + page-size. If the range is larger than the page size, then only the start of it will be in the current page.

A signal::Adjustment::value-changed signal will be emitted if the value is changed.

lower

the lower value

upper

the upper value

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fn configure( &self, value: f64, lower: f64, upper: f64, step_increment: f64, page_increment: f64, page_size: f64 )

Sets all properties of the adjustment at once.

Use this function to avoid multiple emissions of the signal::Adjustment::changed signal. See set_lower() for an alternative way of compressing multiple emissions of signal::Adjustment::changed into one.

value

the new value

lower

the new minimum value

upper

the new maximum value

step_increment

the new step increment

page_increment

the new page increment

page_size

the new page size

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fn lower(&self) -> f64

Retrieves the minimum value of the adjustment.

Returns

The current minimum value of the adjustment

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fn minimum_increment(&self) -> f64

Gets the smaller of step increment and page increment.

Returns

the minimum increment of @self

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fn page_increment(&self) -> f64

Retrieves the page increment of the adjustment.

Returns

The current page increment of the adjustment

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fn page_size(&self) -> f64

Retrieves the page size of the adjustment.

Returns

The current page size of the adjustment

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fn step_increment(&self) -> f64

Retrieves the step increment of the adjustment.

Returns

The current step increment of the adjustment.

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fn upper(&self) -> f64

Retrieves the maximum value of the adjustment.

Returns

The current maximum value of the adjustment

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fn value(&self) -> f64

Gets the current value of the adjustment.

Returns

The current value of the adjustment

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fn set_lower(&self, lower: f64)

Sets the minimum value of the adjustment.

When setting multiple adjustment properties via their individual setters, multiple signal::Adjustment::changed signals will be emitted. However, since the emission of the signal::Adjustment::changed signal is tied to the emission of the ::notify signals of the changed properties, it’s possible to compress the signal::Adjustment::changed signals into one by calling g_object_freeze_notify() and g_object_thaw_notify() around the calls to the individual setters.

Alternatively, using a single g_object_set() for all the properties to change, or using configure() has the same effect.

lower

the new minimum value

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fn set_page_increment(&self, page_increment: f64)

Sets the page increment of the adjustment.

See set_lower() about how to compress multiple emissions of the signal::Adjustment::changed signal when setting multiple adjustment properties.

page_increment

the new page increment

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fn set_page_size(&self, page_size: f64)

Sets the page size of the adjustment.

See set_lower() about how to compress multiple emissions of the signal::Adjustment::changed signal when setting multiple adjustment properties.

page_size

the new page size

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fn set_step_increment(&self, step_increment: f64)

Sets the step increment of the adjustment.

See set_lower() about how to compress multiple emissions of the signal::Adjustment::changed signal when setting multiple adjustment properties.

step_increment

the new step increment

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fn set_upper(&self, upper: f64)

Sets the maximum value of the adjustment.

Note that values will be restricted by upper - page-size if the page-size property is nonzero.

See set_lower() about how to compress multiple emissions of the signal::Adjustment::changed signal when setting multiple adjustment properties.

upper

the new maximum value

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fn set_value(&self, value: f64)

Sets the Adjustment value.

The value is clamped to lie between property::Adjustment::lower and property::Adjustment::upper.

Note that for adjustments which are used in a Scrollbar, the effective range of allowed values goes from property::Adjustment::lower to property::Adjustment::upper - property::Adjustment::page-size.

value

the new value

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fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

Emitted when one or more of the Adjustment properties have been changed.

Note that the property::Adjustment::value property is covered by the signal::Adjustment::value-changed signal.

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fn connect_value_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

Emitted when the value has been changed.

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fn connect_lower_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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fn connect_page_increment_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_page_size_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_step_increment_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_upper_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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fn connect_value_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

Implementors§