pub trait PrintOperationPreviewExt: 'static {
    fn end_preview(&self);
    fn is_selected(&self, page_nr: i32) -> bool;
    fn render_page(&self, page_nr: i32);
    fn connect_got_page_size<F: Fn(&Self, &PrintContext, &PageSetup) + 'static>(
        f: F
    ) -> SignalHandlerId; fn connect_ready<F: Fn(&Self, &PrintContext) + 'static>(
        f: F
    ) -> SignalHandlerId; }
Expand description

Required Methods§

Ends a preview.

This function must be called to finish a custom print preview.

Returns whether the given page is included in the set of pages that have been selected for printing.


a page number


true if the page has been selected for printing

Renders a page to the preview.

This is using the print context that was passed to the signal::PrintOperation::preview handler together with @self.

A custom print preview should use this function to render the currently selected page.

Note that this function requires a suitable cairo context to be associated with the print context.


the page to render

Emitted once for each page that gets rendered to the preview.

A handler for this signal should update the @context according to @page_setup and set up a suitable cairo context, using PrintContext::set_cairo_context().


the current PrintContext


the PageSetup for the current page

The ::ready signal gets emitted once per preview operation, before the first page is rendered.

A handler for this signal can be used for setup tasks.


the current PrintContext