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2008-02-22 Mike Kestner <mkestner@novell.com>

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* gdk/Pixbuf.custom: add destroy notification and pin byte[] to
	avoid GC complications.  Add a couple new convenience ctors as
	well.

svn path=/trunk/gtk-sharp/; revision=96460
This commit is contained in:
Mike Kestner 2008-02-23 04:20:02 +00:00
parent c949e6e8de
commit 00e8af10cc
2 changed files with 43 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2008-02-22 Mike Kestner <mkestner@novell.com>
* gdk/Pixbuf.custom: add destroy notification and pin byte[] to
avoid GC complications. Add a couple new convenience ctors as
well.
2008-02-21 Mike Kestner <mkestner@novell.com>
* glib/Source.cs: rework proxy removal to avoid boxing profile.

38
gdk/Pixbuf.custom
View file

@ -175,6 +175,37 @@
return ret;
}
class DestroyHelper {
GCHandle gch;
GCHandle data_handle;
PixbufDestroyNotify notify;
public DestroyHelper (byte[] data, PixbufDestroyNotify notify)
{
gch = GCHandle.Alloc (this);
data_handle = GCHandle.Alloc (data, GCHandleType.Pinned);
this.notify = notify;
}
void ReleaseHandles (byte[] data)
{
data_handle.Free ();
if (notify != null)
notify (data);
gch.Free ();
}
PixbufDestroyNotify handler;
public PixbufDestroyNotify Handler {
get {
if (handler == null)
handler = new PixbufDestroyNotify (ReleaseHandles);
return handler;
}
}
}
[DllImport("libgdk_pixbuf-2.0-0.dll")]
static extern IntPtr gdk_pixbuf_new_from_data(byte[] data, int colorspace, bool has_alpha, int bits_per_sample, int width, int height, int rowstride, GdkSharp.PixbufDestroyNotifyNative destroy_fn, IntPtr destroy_fn_data);
@ -183,7 +214,8 @@
if (GetType () != typeof (Pixbuf)) {
throw new InvalidOperationException ("Can't override this constructor.");
}
GdkSharp.PixbufDestroyNotifyWrapper destroy_fn_wrapper = new GdkSharp.PixbufDestroyNotifyWrapper (destroy_fn);
DestroyHelper helper = new DestroyHelper (data, destroy_fn);
GdkSharp.PixbufDestroyNotifyWrapper destroy_fn_wrapper = new GdkSharp.PixbufDestroyNotifyWrapper (helper.Handler);
Raw = gdk_pixbuf_new_from_data(data, (int) colorspace, has_alpha, bits_per_sample, width, height, rowstride, destroy_fn_wrapper.NativeDelegate, IntPtr.Zero);
PersistentData ["new_from_data_destroy_fn_wrapper"] = destroy_fn_wrapper;
}
@ -191,6 +223,10 @@
// overload to default the colorspace
public Pixbuf(byte [] data, bool has_alpha, int bits_per_sample, int width, int height, int rowstride, Gdk.PixbufDestroyNotify destroy_fn) : this (data, Gdk.Colorspace.Rgb, has_alpha, bits_per_sample, width, height, rowstride, destroy_fn) {}
public Pixbuf(byte [] data, bool has_alpha, int bits_per_sample, int width, int height, int rowstride) : this (data, Gdk.Colorspace.Rgb, has_alpha, bits_per_sample, width, height, rowstride, null) {}
public Pixbuf(byte [] data, Gdk.Colorspace colorspace, bool has_alpha, int bits_per_sample, int width, int height, int rowstride) : this (data, colorspace, has_alpha, bits_per_sample, width, height, rowstride, null) {}
public unsafe Pixbuf(byte[] data, bool copy_pixels) : base (IntPtr.Zero)
{
IntPtr error = IntPtr.Zero;