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e474eaca89
* glib/Object.cs: make static GLib.Object.LookupGType protected for now. * gtk/CellRenderer.custom: code to allow for subclassing and
implementing a custom cell renderer.
* gtk/Makefile.am: add custom to build.
* gtk/glue/Makefile.am: add glue to build.
* gtk/glue/cellrenderer.c: glue code to override get_size and render
from cellrenderer.
* sample/CustomCellRenderer.cs: new sample to show how to implement a
custom cell renderer.
* sample/Makefile.am: add CustomCellRenderer sample.
svn path=/trunk/gtk-sharp/; revision=27426
90 lines
3.9 KiB
Plaintext
90 lines
3.9 KiB
Plaintext
//
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// CellRenderer.custom - Gtk CellRenderer class customizations
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//
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// Author: Todd Berman <tberman@sevenl.net>
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//
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// Copyright (C) 2004 Todd Berman
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//
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// This code is inserted after the automatically generated code.
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//
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public CellRenderer () : base (IntPtr.Zero)
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{
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if (GetType () != typeof (CellRenderer)) {
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CreateNativeObject (new string[0], new GLib.Value[0]);
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return;
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}
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throw new InvalidOperationException ("You MUST subclass this class");
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}
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[DllImport("gtksharpglue")]
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static extern void gtksharp_cellrenderer_base_get_size (IntPtr handle, IntPtr widget, Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height);
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[DllImport("gtksharpglue")]
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static extern void gtksharp_cellrenderer_override_get_size (GLib.GType gtype, GetSizeDelegate cb);
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delegate void GetSizeDelegate (IntPtr item, IntPtr widget, ref Gdk.Rectangle cell_area, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height);
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static GetSizeDelegate GetSizeCallback;
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static void GetSize_cb (IntPtr item, IntPtr widget, ref Gdk.Rectangle cell_area, IntPtr x_offset, IntPtr y_offset, IntPtr width, IntPtr height)
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{
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CellRenderer obj = GLib.Object.GetObject (item, false) as CellRenderer;
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Gtk.Widget widg = GLib.Object.GetObject (widget, false) as Gtk.Widget;
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int a, b, c, d;
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obj.OnGetSize (widg, cell_area, out a, out b, out c, out d);
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if (x_offset != IntPtr.Zero)
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Marshal.WriteInt32 (x_offset, a);
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if (y_offset != IntPtr.Zero)
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Marshal.WriteInt32 (y_offset, b);
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if (!(cell_area.Equals (Gdk.Rectangle.Zero))) {
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if (width != IntPtr.Zero)
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Marshal.WriteInt32 (width, c);
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if (height != IntPtr.Zero)
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Marshal.WriteInt32 (height, d);
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}
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}
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protected static void OverrideGetSize (GLib.GType gtype)
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{
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if (GetSizeCallback == null)
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GetSizeCallback = new GetSizeDelegate (GetSize_cb);
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gtksharp_cellrenderer_override_get_size (gtype, GetSizeCallback);
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}
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protected virtual void OnGetSize (Gtk.Widget widget, Gdk.Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height)
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{
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gtksharp_cellrenderer_base_get_size (Handle, widget.Handle, cell_area, out x_offset, out y_offset, out width, out height);
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}
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[DllImport("gtksharpglue")]
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static extern void gtksharp_cellrenderer_base_render (IntPtr handle, IntPtr window, IntPtr widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, Gtk.CellRendererState flags);
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[DllImport("gtksharpglue")]
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static extern void gtksharp_cellrenderer_override_render (GLib.GType gtype, RenderDelegate cb);
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delegate void RenderDelegate (IntPtr item, IntPtr window, IntPtr widget, ref Gdk.Rectangle background_area, ref Gdk.Rectangle cell_area, ref Gdk.Rectangle expose_area, Gtk.CellRendererState flags);
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static RenderDelegate RenderCallback;
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static void Render_cb (IntPtr item, IntPtr window, IntPtr widget, ref Gdk.Rectangle background_area, ref Gdk.Rectangle cell_area, ref Gdk.Rectangle expose_area, Gtk.CellRendererState flags)
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{
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CellRenderer obj = GLib.Object.GetObject (item, false) as CellRenderer;
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Gdk.Drawable wind = GLib.Object.GetObject (window, false) as Gdk.Drawable;
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Gtk.Widget widg = GLib.Object.GetObject (widget, false) as Gtk.Widget;
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obj.OnRender (wind, widg, background_area, cell_area, expose_area, flags);
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}
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protected static void OverrideRender (GLib.GType gtype)
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{
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if (RenderCallback == null)
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RenderCallback = new RenderDelegate (Render_cb);
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gtksharp_cellrenderer_override_render (gtype, RenderCallback);
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}
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protected virtual void OnRender (Gdk.Drawable window, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, Gtk.CellRendererState flags)
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{
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gtksharp_cellrenderer_base_render (Handle, window.Handle, widget.Handle, background_area, cell_area, expose_area, flags);
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}
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