GtkSharp/Source/Libs/GdkSharp/Pixbuf.cs

335 lines
14 KiB
C#

// Pixbuf.cs - Gdk Pixbuf class customizations
//
// Authors:
// Vladimir Vukicevic <vladimir@pobox.com>
// Miguel de Icaza <miguel@ximian.com>
// Mike Kestner <mkestner@ximian.com>
// Duncan Mak <duncan@ximian.com>
// Gonzalo Paniagua Javier <gonzalo@ximian.com>
// Martin Willemoes Hansen <mwh@sysrq.dk>
// Jose Faria <spigaz@gmail.com>
//
// Copyright (c) 2002 Vladimir Vukicevic
// Copyright (c) 2003 Ximian, Inc. (Miguel de Icaza)
// Copyright (c) 2003 Ximian, Inc. (Duncan Mak)
// Copyright (c) 2003 Ximian, Inc. (Gonzalo Paniagua Javier)
// Copyright (c) 2003 Martin Willemoes Hansen
// Copyright (c) 2004-2005 Novell, Inc.
//
// This code is inserted after the automatically generated code.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace Gdk {
using System;
using System.Runtime.InteropServices;
public partial class Pixbuf {
public Pixbuf (System.IO.Stream stream) : base (IntPtr.Zero)
{
using (PixbufLoader pl = new PixbufLoader (stream)) {
Raw = pl.PixbufHandle;
}
}
public Pixbuf (System.IO.Stream stream, int width, int height) : base (IntPtr.Zero)
{
using (PixbufLoader pl = new PixbufLoader (stream, width, height)) {
Raw = pl.PixbufHandle;
}
}
public Pixbuf (System.Reflection.Assembly assembly, string resource) : base (IntPtr.Zero)
{
using (PixbufLoader pl = new PixbufLoader (assembly == null ? System.Reflection.Assembly.GetCallingAssembly () : assembly, resource)) {
Raw = pl.PixbufHandle;
}
}
public Pixbuf (System.Reflection.Assembly assembly, string resource, int width, int height) : base (IntPtr.Zero)
{
using (PixbufLoader pl = new PixbufLoader (assembly == null ? System.Reflection.Assembly.GetCallingAssembly () : assembly, resource, width, height)) {
Raw = pl.PixbufHandle;
}
}
public Pixbuf (byte[] buffer) : base (IntPtr.Zero)
{
using (PixbufLoader pl = new PixbufLoader (buffer)) {
Raw = pl.PixbufHandle;
}
}
public Pixbuf (byte[] buffer, int width, int height) : base (IntPtr.Zero)
{
using (PixbufLoader pl = new PixbufLoader (buffer, width, height)) {
Raw = pl.PixbufHandle;
}
}
static public Pixbuf LoadFromResource (string resource)
{
return new Pixbuf (System.Reflection.Assembly.GetCallingAssembly (), resource);
}
delegate IntPtr d_gdk_pixbuf_scale_simple(IntPtr raw, int dest_width, int dest_height, int interp_type);
static d_gdk_pixbuf_scale_simple gdk_pixbuf_scale_simple = FuncLoader.LoadFunction<d_gdk_pixbuf_scale_simple>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_scale_simple"));
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, true);
return ret;
}
delegate IntPtr d_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);
static d_gdk_pixbuf_composite_color_simple gdk_pixbuf_composite_color_simple = FuncLoader.LoadFunction<d_gdk_pixbuf_composite_color_simple>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_composite_color_simple"));
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, true);
return ret;
}
delegate IntPtr d_gdk_pixbuf_add_alpha(IntPtr raw, bool substitute_color, byte r, byte g, byte b);
static d_gdk_pixbuf_add_alpha gdk_pixbuf_add_alpha = FuncLoader.LoadFunction<d_gdk_pixbuf_add_alpha>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_add_alpha"));
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, true);
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;
}
[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
public delegate void NativeDelegate (IntPtr buf, IntPtr data);
void ReleaseHandles (IntPtr buf, IntPtr data)
{
if (notify != null)
notify ((byte[])data_handle.Target);
data_handle.Free ();
gch.Free ();
}
NativeDelegate handler;
public NativeDelegate Handler {
get {
handler = new NativeDelegate (ReleaseHandles);
return handler;
}
}
}
delegate IntPtr d_gdk_pixbuf_new_from_data(byte[] data, int colorspace, bool has_alpha, int bits_per_sample, int width, int height, int rowstride, DestroyHelper.NativeDelegate destroy_fn, IntPtr destroy_fn_data);
static d_gdk_pixbuf_new_from_data gdk_pixbuf_new_from_data = FuncLoader.LoadFunction<d_gdk_pixbuf_new_from_data>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_new_from_data"));
public Pixbuf (byte[] data, Gdk.Colorspace colorspace, bool has_alpha, int bits_per_sample, int width, int height, int rowstride, Gdk.PixbufDestroyNotify destroy_fn) : base (IntPtr.Zero)
{
if (GetType () != typeof (Pixbuf)) {
throw new InvalidOperationException ("Can't override this constructor.");
}
DestroyHelper helper = new DestroyHelper (data, destroy_fn);
Raw = gdk_pixbuf_new_from_data(data, (int) colorspace, has_alpha, bits_per_sample, width, height, rowstride, helper.Handler, IntPtr.Zero);
}
// 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) {}
/* gdk_pixbuf_new_from_inline has been deprecated since version 2.32 and should not be used in newly-written code. Use GResource instead */
/*
public unsafe Pixbuf(byte[] data, bool copy_pixels) : base (IntPtr.Zero)
{
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);
}
*/
delegate IntPtr d_gdk_pixbuf_new_from_inline(int len, IntPtr data, bool copy_pixels, out IntPtr error);
static d_gdk_pixbuf_new_from_inline gdk_pixbuf_new_from_inline = FuncLoader.LoadFunction<d_gdk_pixbuf_new_from_inline>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_new_from_inline"));
public unsafe Pixbuf(int data_length, void *data, bool copy_pixels) : base (IntPtr.Zero)
{
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 ();
}
//
// the 'Pixels' property
//
delegate IntPtr d_gdk_pixbuf_get_pixels(IntPtr raw);
static d_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels = FuncLoader.LoadFunction<d_gdk_pixbuf_get_pixels>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_get_pixels"));
public IntPtr Pixels {
get {
IntPtr ret = gdk_pixbuf_get_pixels (Handle);
return ret;
}
}
delegate IntPtr d_gdk_pixbuf_get_formats();
static d_gdk_pixbuf_get_formats gdk_pixbuf_get_formats = FuncLoader.LoadFunction<d_gdk_pixbuf_get_formats>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_get_formats"));
public static PixbufFormat[] Formats {
get {
IntPtr list_ptr = gdk_pixbuf_get_formats ();
if (list_ptr == IntPtr.Zero)
return new PixbufFormat [0];
GLib.SList list = new GLib.SList (list_ptr, typeof (PixbufFormat));
PixbufFormat[] result = new PixbufFormat [list.Count];
for (int i = 0; i < list.Count; i++)
result [i] = (PixbufFormat) list [i];
return result;
}
}
delegate bool d_gdk_pixbuf_save(IntPtr raw, IntPtr filename, IntPtr type, out IntPtr error, IntPtr dummy);
static d_gdk_pixbuf_save gdk_pixbuf_save = FuncLoader.LoadFunction<d_gdk_pixbuf_save>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_save"));
public unsafe bool Save(string filename, string type) {
IntPtr error = IntPtr.Zero;
IntPtr nfilename = GLib.Marshaller.StringToPtrGStrdup (filename);
IntPtr ntype = GLib.Marshaller.StringToPtrGStrdup (type);
bool ret = gdk_pixbuf_save(Handle, nfilename, ntype, out error, IntPtr.Zero);
GLib.Marshaller.Free (nfilename);
GLib.Marshaller.Free (ntype);
if (error != IntPtr.Zero) throw new GLib.GException (error);
return ret;
}
delegate bool d_gdk_pixbuf_save_to_bufferv(IntPtr raw, out IntPtr buffer, out IntPtr buffer_size, IntPtr type, IntPtr[] option_keys, IntPtr[] option_values, out IntPtr error);
static d_gdk_pixbuf_save_to_bufferv gdk_pixbuf_save_to_bufferv = FuncLoader.LoadFunction<d_gdk_pixbuf_save_to_bufferv>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_save_to_bufferv"));
IntPtr[] NullTerm (string[] src)
{
if (src.Length == 0)
return null;
IntPtr[] result = new IntPtr [src.Length + 1];
for (int i = 0; i < src.Length; i++)
result [i] = GLib.Marshaller.StringToPtrGStrdup (src [i]);
result [src.Length] = IntPtr.Zero;
return result;
}
void ReleaseArray (IntPtr[] ptrs)
{
if (ptrs == null)
return;
foreach (IntPtr p in ptrs)
GLib.Marshaller.Free (p);
}
public unsafe byte[] SaveToBuffer (string type)
{
return SaveToBuffer (type, new string [0], new string [0]);
}
public unsafe byte[] SaveToBuffer (string type, string[] option_keys, string[] option_values)
{
IntPtr error = IntPtr.Zero;
IntPtr buffer;
IntPtr buffer_size;
IntPtr ntype = GLib.Marshaller.StringToPtrGStrdup (type);
IntPtr[] nkeys = NullTerm (option_keys);
IntPtr[] nvals = NullTerm (option_values);
bool saved = gdk_pixbuf_save_to_bufferv (Handle, out buffer, out buffer_size, ntype, nkeys, nvals, out error);
GLib.Marshaller.Free (ntype);
ReleaseArray (nkeys);
ReleaseArray (nvals);
if (!saved)
throw new GLib.GException (error);
byte[] result = new byte [(int)buffer_size];
Marshal.Copy (buffer, result, 0, (int) buffer_size);
GLib.Marshaller.Free (buffer);
return result;
}
delegate bool d_gdk_pixbuf_save_to_callbackv(IntPtr raw, GdkSharp.PixbufSaveFuncNative save_func, IntPtr user_data, IntPtr type, IntPtr[] option_keys, IntPtr[] option_values, out IntPtr error);
static d_gdk_pixbuf_save_to_callbackv gdk_pixbuf_save_to_callbackv = FuncLoader.LoadFunction<d_gdk_pixbuf_save_to_callbackv>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_save_to_callbackv"));
public unsafe void SaveToCallback (PixbufSaveFunc save_func, string type)
{
SaveToCallback (save_func, type, new string [0], new string [0]);
}
public unsafe void SaveToCallback (PixbufSaveFunc save_func, string type, string[] option_keys, string[] option_values)
{
GdkSharp.PixbufSaveFuncWrapper save_func_wrapper = new GdkSharp.PixbufSaveFuncWrapper (save_func);
IntPtr error = IntPtr.Zero;
IntPtr ntype = GLib.Marshaller.StringToPtrGStrdup (type);
IntPtr[] nkeys = NullTerm (option_keys);
IntPtr[] nvals = NullTerm (option_values);
bool saved = gdk_pixbuf_save_to_callbackv (Handle, save_func_wrapper.NativeDelegate, IntPtr.Zero, ntype, nkeys, nvals, out error);
GLib.Marshaller.Free (ntype);
ReleaseArray (nkeys);
ReleaseArray (nvals);
if (!saved)
throw new GLib.GException (error);
}
delegate bool d_gdk_pixbuf_savev(IntPtr raw, IntPtr filename, IntPtr type, IntPtr[] option_keys, IntPtr[] option_values, out IntPtr error);
static d_gdk_pixbuf_savev gdk_pixbuf_savev = FuncLoader.LoadFunction<d_gdk_pixbuf_savev>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GdkPixbuf), "gdk_pixbuf_savev"));
public unsafe bool Savev(string filename, string type, string[] option_keys, string[] option_values) {
IntPtr error = IntPtr.Zero;
IntPtr native_filename = GLib.Marshaller.StringToPtrGStrdup (filename);
IntPtr native_type = GLib.Marshaller.StringToPtrGStrdup (type);
IntPtr[] native_option_keys = NullTerm (option_keys);
IntPtr[] native_option_values = NullTerm (option_values);
bool saved = gdk_pixbuf_savev(Handle, native_filename, native_type, native_option_keys, native_option_values, out error);
GLib.Marshaller.Free (native_filename);
GLib.Marshaller.Free (native_type);
ReleaseArray (native_option_keys);
ReleaseArray (native_option_values);
if (!saved)
throw new GLib.GException (error);
return saved;
}
}
}