ferroui_base/platform/
i_cursor_factory.rs

1use super::ICursorImpl;
2use crate::input::StandardCursorType;
3use crate::media::imaging::Bitmap;
4use crate::PixelPoint;
5use std::rc::Rc;
6
7/// Creates the platform implementations of mouse cursors.
8///
9/// This is an implementation detail of the platform backends.
10pub trait ICursorFactory {
11    /// Gets the platform cursor for a standard cursor type.
12    fn get_cursor(&self, cursor_type: StandardCursorType) -> Rc<dyn ICursorImpl>;
13
14    /// Creates a platform cursor from a bitmap. `hot_spot` is the position
15    /// within the bitmap that is the position of the pointer.
16    ///
17    /// Every backend is expected to implement this. The default exists so
18    /// that a backend written before bitmap cursors were part of the
19    /// contract keeps building.
20    ///
21    /// # Panics
22    /// The default implementation panics: the backend does not support
23    /// bitmap cursors.
24    fn create_cursor(&self, cursor: &Bitmap, hot_spot: PixelPoint) -> Rc<dyn ICursorImpl> {
25        let _ = (cursor, hot_spot);
26        panic!("The cursor factory of the platform does not support bitmap cursors.")
27    }
28}
ferroui_base/platform/i_cursor_factory.rs

ferroui_base/platform/
i_cursor_factory.rs
