mirror of
https://github.com/Ryujinx/GtkSharp.git
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ccfec8b7e2
* generator/SignalHandler.cs : use ref parameters in signal cb's. svn path=/trunk/gtk-sharp/; revision=6136
206 lines
6.7 KiB
C#
206 lines
6.7 KiB
C#
// GtkSharp.Generation.SignalHandler.cs - The SignalHandler marshaling Class.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// (c) 2002 Mike Kestner
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namespace GtkSharp.Generation {
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using System;
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using System.Collections;
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using System.IO;
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using System.Xml;
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public class SignalHandler {
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private static Hashtable handlers = new Hashtable ();
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private string args_type;
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public static String GetName(XmlElement sig)
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{
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XmlElement ret_elem = sig["return-type"];
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if (ret_elem == null) {
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Console.Write("Missing return-type ");
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return "";
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}
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string retval = ret_elem.GetAttribute("type");
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if (retval == "") {
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Console.Write("Invalid return-type ");
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return "";
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}
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string s_ret = SymbolTable.GetCSType(retval);
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string p_ret = SymbolTable.GetMarshalType(retval);
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if ((s_ret == "") || (p_ret == "")) {
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Console.Write("Funky type: " + retval);
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return "";
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}
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string key = retval;
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string pinv = "";
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string name = SymbolTable.GetName(retval);
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string argfields = "";
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int pcnt = 0;
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ArrayList parms = new ArrayList();
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XmlElement params_elem = sig["parameters"];
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if (params_elem == null) {
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Console.Write("Missing parameters ");
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return "";
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}
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foreach (XmlNode parm in params_elem.ChildNodes) {
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if (!(parm is XmlElement) || parm.Name != "parameter") continue;
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XmlElement elem = (XmlElement) parm;
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string type = elem.GetAttribute("type");
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string ptype = SymbolTable.GetMarshalType(type);
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if (ptype == "") {
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Console.Write("Funky type: " + type);
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return "";
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}
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if (pcnt > 0) {
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pinv += ", ";
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}
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if (SymbolTable.IsStruct(type))
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pinv += "ref ";
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pinv += (ptype + " arg" + pcnt);
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parms.Add(type);
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if (SymbolTable.IsObject(type)) {
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name += "Object";
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key += "Object";
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} else {
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name += SymbolTable.GetName(type);
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key += type;
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}
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pcnt++;
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}
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if (handlers.ContainsKey(name)) {
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return (String) handlers[name];
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}
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String dir;
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char sep = Path.DirectorySeparatorChar;
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if (key.IndexOf("Gtk") >= 0) {
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dir = ".." + sep + "gtk" + sep + "generated";
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} else if (key.IndexOf("Gdk") >= 0) {
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dir = ".." + sep + "gdk" + sep + "generated";
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} else if (key.IndexOf("Atk") >= 0) {
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dir = ".." + sep + "atk" + sep + "generated";
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} else if (key.IndexOf("Pango") >= 0) {
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dir = ".." + sep + "pango" + sep + "generated";
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} else if (key.IndexOf("Gnome") >= 0) {
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dir = ".." + sep + "gnome" + sep + "generated";
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} else {
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dir = ".." + sep + "glib" + sep + "generated";
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}
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String sname = name + "Signal";
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String dname = name + "Delegate";
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String cbname = name + "Callback";
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handlers[name] = sname;
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if (!Directory.Exists(dir)) {
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Directory.CreateDirectory(dir);
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}
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String filename = dir + sep + sname + ".cs";
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FileStream stream = new FileStream (filename, FileMode.Create, FileAccess.Write);
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StreamWriter sw = new StreamWriter (stream);
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sw.WriteLine ("// Generated File. Do not modify.");
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sw.WriteLine ("// <c> 2001-2002 Mike Kestner");
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sw.WriteLine ();
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sw.WriteLine("namespace GtkSharp {");
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sw.WriteLine();
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sw.WriteLine("\tusing System;");
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sw.WriteLine("\tusing System.Runtime.InteropServices;");
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sw.WriteLine();
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sw.Write("\tpublic delegate " + p_ret + " ");
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sw.WriteLine(dname + "(" + pinv + ", int key);");
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sw.WriteLine();
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sw.WriteLine("\tpublic class " + sname + " : SignalCallback {");
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sw.WriteLine();
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sw.WriteLine("\t\tprivate static " + dname + " _Delegate;");
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sw.WriteLine();
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sw.Write("\t\tprivate static " + s_ret + " ");
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sw.WriteLine(cbname + "(" + pinv + ", int key)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\tif (!_Instances.Contains(key))");
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sw.WriteLine("\t\t\t\tthrow new Exception(\"Unexpected signal key \" + key);");
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sw.WriteLine();
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sw.WriteLine("\t\t\t" + sname + " inst = (" + sname + ") _Instances[key];");
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if ((s_ret == "void") && (parms.Count == 1)) {
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sw.WriteLine("\t\t\tEventHandler h = (EventHandler) inst._handler;");
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sw.WriteLine("\t\t\th (inst._obj, new EventArgs ());");
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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} else {
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sw.WriteLine("\t\t\tSignalArgs args = (SignalArgs) Activator.CreateInstance (inst._argstype);");
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if (parms.Count > 1) {
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sw.WriteLine("\t\t\targs.Args = new object[" + (parms.Count-1) + "];");
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}
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for (int idx=1; idx < parms.Count; idx++) {
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if (SymbolTable.IsObject((String)parms[idx])) {
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sw.Write("\t\t\targs.Args[" + (idx-1) + "] ");
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sw.WriteLine("= GLib.Object.GetObject(arg" + idx + ");");
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} else {
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string ctype = (string) parms[idx];
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sw.WriteLine("\t\t\targs.Args[" + (idx-1) + "] = " + SymbolTable.FromNative (ctype, "arg" + idx) + ";");
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ClassBase wrapper = SymbolTable.GetClassGen (ctype);
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if ((wrapper != null && !(wrapper is InterfaceGen)) || SymbolTable.IsManuallyWrapped (ctype) || SymbolTable.IsBoxed (ctype)) {
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sw.WriteLine("\t\t\tif (args.Args[" + (idx-1) + "] == null)");
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sw.WriteLine("\t\t\t\targs.Args[{0}] = new {1}(arg{2});", idx-1, SymbolTable.GetCSType (ctype), idx);
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}
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}
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}
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sw.WriteLine("\t\t\tobject[] argv = new object[2];");
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sw.WriteLine("\t\t\targv[0] = inst._obj;");
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sw.WriteLine("\t\t\targv[1] = args;");
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sw.WriteLine("\t\t\tinst._handler.DynamicInvoke(argv);");
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if (retval != "void") {
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sw.WriteLine("\t\t\treturn (" + s_ret + ") args.RetVal;");
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}
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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}
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sw.Write("\t\t[DllImport(\"gobject-2.0\")]");
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sw.Write("\t\tstatic extern void g_signal_connect_data(");
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sw.Write("IntPtr obj, String name, " + dname + " cb, int key, IntPtr p,");
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sw.WriteLine(" int flags);");
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sw.WriteLine();
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sw.Write("\t\tpublic " + sname + "(GLib.Object obj, IntPtr raw, ");
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sw.WriteLine("String name, MulticastDelegate eh, Type argstype) : base(obj, eh, argstype)");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\tif (_Delegate == null) {");
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sw.WriteLine("\t\t\t\t_Delegate = new " + dname + "(" + cbname + ");");
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sw.WriteLine("\t\t\t}");
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sw.Write("\t\t\tg_signal_connect_data(raw, name, ");
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sw.WriteLine("_Delegate, _key, new IntPtr(0), 0);");
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sw.WriteLine("\t\t}");
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sw.WriteLine();
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sw.WriteLine("\t\t~" + sname + "()");
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sw.WriteLine("\t\t{");
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sw.WriteLine("\t\t\t_Instances.Remove(_key);");
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sw.WriteLine("\t\t\tif(_Instances.Count == 0) {");
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sw.WriteLine("\t\t\t\t_Delegate = null;");
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sw.WriteLine("\t\t\t}");
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sw.WriteLine("\t\t}");
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sw.WriteLine("\t}");
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sw.WriteLine("}");
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sw.Close();
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return sname;
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}
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}
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}
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