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//
// Extensions to Pixbuf
//
//
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IntPtr LoadFromStream (System.IO.Stream input)
{
PixbufLoader loader = new PixbufLoader ();
byte [] buffer = new byte [8192];
int n;
while ((n = input.Read (buffer, 0, 8192)) != 0)
loader.Write (buffer, (uint) n);
loader.Close ();
return loader.Pixbuf.Handle;
}
public Pixbuf (System.IO.Stream input)
{
Raw = LoadFromStream (input);
}
public Pixbuf (System.Reflection.Assembly assembly, string resource)
{
if (assembly == null)
assembly = System.Reflection.Assembly.GetCallingAssembly ();
System.IO.Stream s;
Pixbuf p = null;
using (s = assembly.GetManifestResourceStream (resource))
Raw = LoadFromStream (s);
}
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// scale_simple, composite_color_simple, and addalpha do a gdk_pixbuf_new on the
// return first, and we also ref it
// in the GetObject. So get rid of one extra reference.
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[DllImport("gdk_pixbuf-2.0")]
static extern IntPtr gdk_pixbuf_scale_simple(IntPtr raw, int dest_width, int dest_height, int interp_type);
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public Gdk.Pixbuf ScaleSimple(int dest_width, int dest_height, Gdk.InterpType interp_type) {
IntPtr raw_ret = gdk_pixbuf_scale_simple(Handle, dest_width, dest_height, (int) interp_type);
Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(raw_ret);
ret.Unref ();
return ret;
}
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[DllImport("gdk_pixbuf-2.0")]
static extern IntPtr gdk_pixbuf_composite_color_simple(IntPtr raw, int dest_width, int dest_height, int interp_type, int overall_alpha, int check_size, uint color1, uint color2);
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public Gdk.Pixbuf CompositeColorSimple(int dest_width, int dest_height, Gdk.InterpType interp_type, int overall_alpha, int check_size, uint color1, uint color2) {
IntPtr raw_ret = gdk_pixbuf_composite_color_simple(Handle, dest_width, dest_height, (int) interp_type, overall_alpha, check_size, color1, color2);
Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(raw_ret);
ret.Unref ();
return ret;
}
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[DllImport("gdk_pixbuf-2.0")]
static extern IntPtr gdk_pixbuf_add_alpha(IntPtr raw, bool substitute_color, byte r, byte g, byte b);
public Gdk.Pixbuf AddAlpha(bool substitute_color, byte r, byte g, byte b) {
IntPtr raw_ret = gdk_pixbuf_add_alpha(Handle, substitute_color, r, g, b);
Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(raw_ret);
ret.Unref ();
return ret;
}
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//
// These are temporary bug fixes: there are a number of entry points that
// are currently miss-generated.
//
[DllImport("gdk_pixbuf-2.0")]
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, System.IntPtr destroy_fn_data);
public Pixbuf(byte [] data, bool has_alpha, int bits_per_sample, int width, int height, int rowstride, Gdk.PixbufDestroyNotify destroy_fn)
{
GdkSharp.PixbufDestroyNotifyWrapper destroy_fn_wrapper = null;
destroy_fn_wrapper = new GdkSharp.PixbufDestroyNotifyWrapper (destroy_fn);
Raw = gdk_pixbuf_new_from_data(data, (int) Gdk.Colorspace.Rgb, has_alpha, bits_per_sample, width, height, rowstride, destroy_fn_wrapper.NativeDelegate, IntPtr.Zero);
}
[DllImport("gdk_pixbuf-2.0")]
static extern unsafe IntPtr gdk_pixbuf_new_from_inline(int len, byte [] data, bool copy_pixels, out IntPtr error);
public unsafe Pixbuf(byte[] data, bool copy_pixels)
{
IntPtr error = IntPtr.Zero;
Raw = gdk_pixbuf_new_from_inline(data.Length, data, copy_pixels, out error);
if (error != IntPtr.Zero) throw new GLib.GException (error);
}
[DllImport("gdk_pixbuf-2.0")]
static extern unsafe IntPtr gdk_pixbuf_new_from_inline(int len, IntPtr data, bool copy_pixels, out IntPtr error);
public unsafe Pixbuf(int data_length, void *data, bool copy_pixels)
{
IntPtr error = IntPtr.Zero;
Raw = gdk_pixbuf_new_from_inline(data_length, (IntPtr) data, copy_pixels, out error);
if (error != IntPtr.Zero) throw new GLib.GException (error);
}
//
// ICloneable interface
//
public object Clone ()
{
return Copy ();
}
//
// These are factory versions of a couple of existing methods, but simplify
// the process by reducing the number of steps required. Here a single
// operation will create the Pixbuf instead of two
//
/// <summary> GetFromDrawable Method </summary>
/// <remarks> To be completed </remarks>
public Gdk.Pixbuf CreateFromDrawable (Gdk.Drawable src, Gdk.Colormap cmap, int src_x, int src_y, int dest_x, int dest_y, int width, int height) {
IntPtr raw_ret = gdk_pixbuf_get_from_drawable((IntPtr) 0, src.Handle, cmap.Handle, src_x, src_y, dest_x, dest_y, width, height);
return new Pixbuf (raw_ret);
}
//
// Add an overload that takes System.Drawing.Color arguments instead of uint32 values for colors
//
public void CompositeColor(Gdk.Pixbuf dest, int dest_x, int dest_y, int dest_width, int dest_height,
double offset_x, double offset_y, double scale_x, double scale_y,
Gdk.InterpType interp_type, int overall_alpha, int check_x, int check_y,
int check_size, System.Drawing.Color color1, System.Drawing.Color color2)
{
gdk_pixbuf_composite_color(Handle, dest.Handle, dest_x, dest_y, dest_width, dest_height, offset_x,
offset_y, scale_x, scale_y, (int) interp_type, overall_alpha, check_x, check_y, check_size,
(uint) color1.ToArgb (), (uint) color2.ToArgb ());
}
public Gdk.Pixbuf CompositeColorSimple(int dest_width, int dest_height, Gdk.InterpType interp_type, int overall_alpha, int check_size, System.Drawing.Color color1, System.Drawing.Color color2) {
return CompositeColorSimple (dest_width, dest_height, interp_type, overall_alpha, check_size, (uint) color1.ToArgb (), (uint) color2.ToArgb ());
}
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//
// the 'Pixels' property
//
[DllImport("libgdk_pixbuf-2.0-0.dll")]
static extern unsafe byte* gdk_pixbuf_get_pixels(IntPtr raw);
public unsafe byte* Pixels {
get {
byte *ret = gdk_pixbuf_get_pixels (Handle);
return ret;
}
}