DrawContext

Object Hierarchy:

Object hierarchy for DrawContext

Description:

[ CCode ( type_id = "gdk_draw_context_get_type ()" ) ]
public abstract class DrawContext : Object

Base class for objects implementing different rendering methods.

`GdkDrawContext` is the base object used by contexts implementing different rendering methods, such as [class@Gdk.CairoContext] or [ class@Gdk.GLContext]. It provides shared functionality between those contexts.

You will always interact with one of those subclasses.

A `GdkDrawContext` is always associated with a single toplevel surface.

All known sub-classes:

Namespace: Gdk
Package: gtk4

Content:

Properties:

  • public Display display { get; construct; }
    The `GdkDisplay` used to create the `GdkDrawContext`.
  • public Surface surface { get; construct; }
    The `GdkSurface` the context is bound to.

Creation methods:

Methods:

  • public void begin_frame (Region region)
    Indicates that you are beginning the process of redrawing region on the this's surface.
  • public void end_frame ()
    Ends a drawing operation started with begin_frame.
  • public unowned Display? get_display ()
    Retrieves the `GdkDisplay` the this is created for
  • public unowned Region? get_frame_region ()
    Retrieves the region that is currently being repainted.
  • public unowned Surface? get_surface ()
    Retrieves the surface that this is bound to.
  • public bool is_in_frame ()
    Returns true if this is in the process of drawing to its surface.

Inherited Members:

All known members inherited from class GLib.Object