class: CairoContext

[14:7] extends: object

Represents the platform-specific draw context. GdkCairoContexts are created for a surface using [method@Gdk.Surface.create_cairo_context], and the context can then be used to draw on that surface.

Members

• handleObj
• lib
• retainedCallbacks
• signalHandlerNames
• signalSetterHandlers

Methods

• CairoContext (Handle = null)

  Creates a new CairoContext 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.

• asDrawContext ()

  Wraps this handle as DrawContext.

  • @r A DrawContext object.

• cairo_create ()

  Retrieves a Cairo context to be used to draw on the GdkSurface of

  • @context. A call to [method@Gdk.DrawContext.begin_frame] with this
  • @context must have been done or this function will return %NULL. The returned context is guaranteed to be valid until [method@Gdk.DrawContext.end_frame] is called.