[−][src]Trait druid::WinCtx

pub trait WinCtx<'a> {
    fn invalidate(&mut self);
    fn text_factory(
        &mut self
    ) -> &mut <D2DRenderContext<'a> as RenderContext>::Text;
    fn set_cursor(&mut self, cursor: &Cursor);
    fn request_timer(&mut self, deadline: Instant) -> TimerToken;
    fn open_file_sync(&mut self, options: FileDialogOptions) -> Option<FileInfo>;
    fn save_as_sync(&mut self, options: FileDialogOptions) -> Option<FileInfo>;
}

A context supplied to most WinHandler methods.

Required methods

`fn invalidate(&mut self)`

Invalidate the entire window.

TODO: finer grained invalidation.

`fn text_factory(&mut self) -> &mut <D2DRenderContext<'a> as RenderContext>::Text`

Get a reference to an object that can do text layout.

`fn set_cursor(&mut self, cursor: &Cursor)`

Set the cursor icon.

`fn request_timer(&mut self, deadline: Instant) -> TimerToken`

Schedule a timer.

This causes a WinHandler::timer() call at the deadline. The return value is a token that can be used to associate the request with the handler call.

Note that this is not a precise timer. On Windows, the typical resolution is around 10ms. Therefore, it's best used for things like blinking a cursor or triggering tooltips, not for anything requiring precision.

`fn open_file_sync(&mut self, options: FileDialogOptions) -> Option<FileInfo>`

Prompt the user to chose a file to open.

Blocks while the user picks the file.

`fn save_as_sync(&mut self, options: FileDialogOptions) -> Option<FileInfo>`

Prompt the user to chose a path for saving.

Blocks while the user picks a file.

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Implementors

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