i_slint_core::items

Trait Item

Source 
pub trait Item {
    // Required methods
    fn init(self: Pin<&Self>, _1: &ItemRc);
    fn layout_info(
        self: Pin<&Self>,
        _1: Orientation,
        _2: &WindowAdapterRc,
    ) -> LayoutInfo;
    fn input_event_filter_before_children(
        self: Pin<&Self>,
        _1: MouseEvent,
        _2: &WindowAdapterRc,
        _3: &ItemRc,
    ) -> InputEventFilterResult;
    fn input_event(
        self: Pin<&Self>,
        _1: MouseEvent,
        _2: &WindowAdapterRc,
        _3: &ItemRc,
    ) -> InputEventResult;
    fn focus_event(
        self: Pin<&Self>,
        _1: &FocusEvent,
        _2: &WindowAdapterRc,
        _3: &ItemRc,
    ) -> FocusEventResult;
    fn key_event(
        self: Pin<&Self>,
        _1: &KeyEvent,
        _2: &WindowAdapterRc,
        _3: &ItemRc,
    ) -> KeyEventResult;
    fn render(
        self: Pin<&Self>,
        _1: &mut &'_ mut dyn ItemRenderer,
        _2: &ItemRc,
        _3: LogicalSize,
    ) -> RenderingResult;
}
Expand description

Items are the nodes in the render tree. Note: Was generated from the #[vtable] macro on ItemVTable

Required Methods§

Source

fn init(self: Pin<&Self>, _1: &ItemRc)

This function is called by the run-time after the memory for the item has been allocated and initialized. It will be called before any user specified bindings are set.

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fn layout_info( self: Pin<&Self>, _1: Orientation, _2: &WindowAdapterRc, ) -> LayoutInfo

We would need max/min/preferred size, and all layout info

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fn input_event_filter_before_children( self: Pin<&Self>, _1: MouseEvent, _2: &WindowAdapterRc, _3: &ItemRc, ) -> InputEventFilterResult

Event handler for mouse and touch event. This function is called before being called on children. Then, depending on the return value, it is called for the children, and their children, then Self::input_event is called on the children, and finally Self::input_event is called on this item again.

Source

fn input_event( self: Pin<&Self>, _1: MouseEvent, _2: &WindowAdapterRc, _3: &ItemRc, ) -> InputEventResult

Handle input event for mouse and touch event

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fn focus_event( self: Pin<&Self>, _1: &FocusEvent, _2: &WindowAdapterRc, _3: &ItemRc, ) -> FocusEventResult

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fn key_event( self: Pin<&Self>, _1: &KeyEvent, _2: &WindowAdapterRc, _3: &ItemRc, ) -> KeyEventResult

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fn render( self: Pin<&Self>, _1: &mut &'_ mut dyn ItemRenderer, _2: &ItemRc, _3: LogicalSize, ) -> RenderingResult

Implementors§