class: PrintOperationPreviewReadyCallback

[279:7] extends: object

Generated low-level callback wrapper for GIR callback ready.

Members

• callbackObj
• userFn
• userData
• hasUserData

Methods

• PrintOperationPreviewReadyCallback (callback Fn, UserData = null)

  Creates one native callback wrapper. The wrapper owns a trampoline that converts native pointers into generated wrapper objects before invoking Fn.

  • @p Fn is the Aussom callback implementation.
  • @p UserData is retained and passed through to Fn on each invocation when provided.

• trampoline (nativeSelf, context, nativeUserData)

  Internal trampoline. Converts native pointer arguments into generated wrapper instances, then invokes the user's callback.

• callback ()

  Returns the wrapped NativeCallback.

• handle ()

  Returns the callback as a NativeHandle.

• close ()

  Closes the underlying NativeCallback.

• isClosed ()

  Returns true when the callback has been closed.

class: PrintOperationPreview

[14:7] extends: object

The interface that is used to implement print preview. A GtkPrintOperationPreview object is passed to the [signal@Gtk.PrintOperation::preview] signal by [class@Gtk.PrintOperation].

Members

• handleObj
• lib
• retainedCallbacks
• signalHandlerNames
• signalSetterHandlers

Methods

• PrintOperationPreview (Handle = null)

  Creates a new PrintOperationPreview by wrapping a native handle or another wrapper.

  • @p Handle is the native handle or another wrapper whose handle to adopt.

• toNativeHandle (Source)

  Normalizes a constructor argument into a raw pointer carrier. Accepts a raw NativeHandle, a raw NativeBuffer returned from fn.call(...), another generated wrapper exposing handle(), or null. Returns null when the argument carries no pointer.

  • @p Source is the raw handle, raw buffer, wrapper, or null.
  • @r A raw pointer carrier or null when no pointer is present.

• getLib ()

  Returns the opened native library for this generated wrapper.

  • @r The opened native library.

• handle ()

  Returns the wrapped NativeHandle.

  • @r The wrapped NativeHandle.

• isNull ()

  Returns true when the wrapped handle is null.

  • @r A bool.

• describe ()

  Returns a small string for debugging generated wrappers.

  • @r A string.

• connectSignal (string Name, CallbackObj)

  Connects one generated callback wrapper to a named signal.

  • @p Name is the signal name.
  • @p CallbackObj is the generated callback wrapper to connect.
  • @r The connected handler id.

• disconnectSignalHandler (int HandlerId)

  Disconnects one retained signal handler id.

  • @p HandlerId is the signal handler id to disconnect.
  • @r None.

• setOnGotpagesize (callback Fn, UserData = null)

  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 [method@Gtk.PrintContext.set_cairo_context].

  • @p Fn is the Aussom callback.
  • @p Fn is called with (PrintOperationPreview Self, PrintContext Context, PageSetup Page_setup).
  • @p UserData is retained and passed through to the generated callback wrapper when provided.
  • @r The connected handler id.

• setOnReady (callback Fn, UserData = null)

  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.

  • @p Fn is the Aussom callback.
  • @p Fn is called with (PrintOperationPreview Self, PrintContext Context).
  • @p UserData is retained and passed through to the generated callback wrapper when provided.
  • @r The connected handler id.

• end_preview ()

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

  • @r None.

• is_selected (int page_nr)

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

  • @p page_nr is a page number.

• render_page (int page_nr)

  Renders a page to the preview. This is using the print context that was passed to the [signal@Gtk.PrintOperation::preview] handler together with

  • @preview. 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.
  • @p page_nr is the page to render.
  • @r None.

class: PrintOperationPreviewGotpagesizeCallback

[207:7] extends: object

Generated low-level callback wrapper for GIR callback got-page-size.

Members

• callbackObj
• userFn
• userData
• hasUserData

Methods

• PrintOperationPreviewGotpagesizeCallback (callback Fn, UserData = null)

  Creates one native callback wrapper. The wrapper owns a trampoline that converts native pointers into generated wrapper objects before invoking Fn.

  • @p Fn is the Aussom callback implementation.
  • @p UserData is retained and passed through to Fn on each invocation when provided.

• trampoline (nativeSelf, context, page_setup, nativeUserData)

  Internal trampoline. Converts native pointer arguments into generated wrapper instances, then invokes the user's callback.

• callback ()

  Returns the wrapped NativeCallback.

• handle ()

  Returns the callback as a NativeHandle.

• close ()

  Closes the underlying NativeCallback.

• isClosed ()

  Returns true when the callback has been closed.

class: PrintOperationPreviewMeta

[350:14] static extends: object

Generated metadata helpers for PrintOperationPreview interface surfaces.

Methods

• signals ()

  Returns signal metadata for PrintOperationPreview.

  • @r A list.