Trait gdk4::prelude::SurfaceExtManual
source · pub trait SurfaceExtManual: 'static {
// Required methods
fn create_similar_surface(
&self,
content: Content,
width: i32,
height: i32
) -> Surface;
fn translate_coordinates(&self, to: &Surface, x: f64, y: f64) -> bool;
}
Expand description
Trait containing manually implemented methods of Surface
.
Required Methods§
sourcefn create_similar_surface(
&self,
content: Content,
width: i32,
height: i32
) -> Surface
fn create_similar_surface( &self, content: Content, width: i32, height: i32 ) -> Surface
Create a new Cairo surface that is as compatible as possible with the given @self.
For example the new surface will have the same fallback resolution and font options as @self. Generally, the new surface will also use the same backend as @self, unless that is not possible for some reason. The type of the returned surface may be examined with cairo_surface_get_type().
Initially the surface contents are all 0 (transparent if contents have transparency, black otherwise.)
This function always returns a valid pointer, but it will return a pointer to a “nil” surface if @other is already in an error state or any other error occurs.
content
the content for the new surface
width
width of the new surface
height
height of the new surface
Returns
a pointer to the newly allocated surface. The caller owns the surface and should call cairo_surface_destroy() when done with it.