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* generator/ManagedCallString.cs (Setup, Finish, ToString): Add

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new methods to allow arbitrary setup and teardown code around the
        managed call. When passing a type with "complicated" marshalling
        requirements as a ref or out param, first assign the value to a
        temporary variable (in Setup), then pass the temp as the ref or
        out param (in ToString), and then assign the new value back to the
        original argument (in Finish).

        * generator/Signal.cs: 
        * generator/SignalHandler.cs: Update to generate correct glue for
        signals with "ref" or "out" params. (#70566)

        * generator/VirtualMethod.cs: Update for ManagedCallString change

        * generator/IGeneratable.cs: add comments explaining what each
        member does

        * gtk/Gtk.metadata: mark Editable.InsertText's "position" arg
        * pass-by-ref

        * sample/Size.cs: connect to the SizeRequested event and override
        it, to test/demo the changes

svn path=/trunk/gtk-sharp/; revision=37854
This commit is contained in:
Dan Winship 2004-12-16 23:38:35 +00:00
parent 88cc4817f5
commit faaccd7e0b
15 changed files with 169 additions and 26 deletions
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28
ChangeLog
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@ -1,3 +1,27 @@
2004-12-16 Dan Winship <danw@novell.com>
* generator/ManagedCallString.cs (Setup, Finish, ToString): Add
new methods to allow arbitrary setup and teardown code around the
managed call. When passing a type with "complicated" marshalling
requirements as a ref or out param, first assign the value to a
temporary variable (in Setup), then pass the temp as the ref or
out param (in ToString), and then assign the new value back to the
original argument (in Finish).
* generator/Signal.cs:
* generator/SignalHandler.cs: Update to generate correct glue for
signals with "ref" or "out" params. (#70566)
* generator/VirtualMethod.cs: Update for ManagedCallString change
* generator/IGeneratable.cs: add comments explaining what each
member does
* gtk/Gtk.metadata: mark Editable.InsertText's "position" arg pass-by-ref
* sample/Size.cs: connect to the SizeRequested event and override
it, to test/demo the changes
2004-12-16 Dan Winship <danw@novell.com>
* parser/gapi_pp.pl: Don't strip out /*< public >*/ and
@ -19,8 +43,8 @@
wrapper properties for private fields, since the only code that
could use them is the generated code, which won't.
See doc/ChangeLog for the (very minimal) fallout from these
changes.
Part of #69514. See doc/ChangeLog for the (very minimal) fallout
from these changes.
2004-12-16 Mike Kestner <mkestner@novell.com>

14
doc/ChangeLog
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@ -1,3 +1,17 @@
2004-12-16 Dan Winship <danw@novell.com>
* en/Gtk/InputArgs.xml (NewValue):
* en/Gtk/ToggleSizeRequestedArgs.xml (Requisition): now write-only
rather than read-only
* en/Gtk/SizeRequestedArgs.xml (Requisition):
* en/Gtk/TextInsertedArgs.xml (Position): now read-write
* en/Gtk/Entry.xml (OnTextInserted): "position" is now "ref"
rather than "out"
* en/Gtk/RowsReorderedArgs.xml (NewOrder): changed, but still broken
2004-12-16 Dan Winship <danw@novell.com>
* en/Art/AlphaGamma.xml:

4
doc/en/Gtk/Entry.xml
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@ -955,14 +955,14 @@ class EntrySample
</Docs>
</Member>
<Member MemberName="OnTextInserted">
<MemberSignature Language="C#" Value="protected virtual void OnTextInserted (string text, out int position);" />
<MemberSignature Language="C#" Value="protected virtual void OnTextInserted (string text, ref int position);" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Void</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="text" Type="System.String" />
<Parameter Name="position" Type="System.Int32&amp;" RefType="out" />
<Parameter Name="position" Type="System.Int32&amp;" RefType="ref" />
</Parameters>
<Docs>
<summary>Default handler for the <see cref="M:Gtk.Entry.TextInserted" /> event.</summary>

6
doc/en/Gtk/InputArgs.xml
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@ -33,14 +33,14 @@
</Docs>
</Member>
<Member MemberName="NewValue">
<MemberSignature Language="C#" Value="public double NewValue { get; };" />
<MemberSignature Language="C#" Value="public double NewValue { set; };" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>System.Double</ReturnType>
</ReturnValue>
<Docs>
<summary>The new value given as input.</summary>
<returns>A <see cref="T:System.Double" /></returns>
<summary>The new value</summary>
<returns>a <see cref="T:System.Double" /></returns>
<remarks />
</Docs>
</Member>

2
doc/en/Gtk/RowsReorderedArgs.xml
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@ -52,7 +52,7 @@
</Docs>
</Member>
<Member MemberName="NewOrder">
<MemberSignature Language="C#" Value="public int NewOrder { get; };" />
<MemberSignature Language="C#" Value="public int NewOrder { set; };" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>System.Int32</ReturnType>

14
doc/en/Gtk/SizeRequestedArgs.xml
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@ -33,15 +33,25 @@
</Docs>
</Member>
<Member MemberName="Requisition">
<MemberSignature Language="C#" Value="public Gtk.Requisition Requisition { get; };" />
<MemberSignature Language="C#" Value="public Gtk.Requisition Requisition { set; get; };" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>Gtk.Requisition</ReturnType>
</ReturnValue>
<Parameters />
<Docs>
<summary>The width and height this widget would like to have.</summary>
<returns>A <see cref="T:Gtk.Requisition" /></returns>
<remarks />
<remarks>
<example>
<code lang="C#">Requisition req = args.Requisition;
req.Width = 100;
req.Height = 200;
// NB: You must assign the value back to args.Requisition
args.Requisition = req;</code>
</example>
</remarks>
</Docs>
</Member>
</Members>

4
doc/en/Gtk/TextInsertedArgs.xml
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@ -52,13 +52,13 @@
</Docs>
</Member>
<Member MemberName="Position">
<MemberSignature Language="C#" Value="public int Position { get; };" />
<MemberSignature Language="C#" Value="public int Position { set; get; };" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>System.Int32</ReturnType>
</ReturnValue>
<Docs>
<summary>The position within the widget text where the text was inserted.</summary>
<summary>The position at which to insert the new text. On return, it should point to the position after the inserted text.</summary>
<returns>An integer, the insert position.</returns>
<remarks />
</Docs>

6
doc/en/Gtk/ToggleSizeRequestedArgs.xml
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@ -33,14 +33,14 @@
</Docs>
</Member>
<Member MemberName="Requisition">
<MemberSignature Language="C#" Value="public int Requisition { get; };" />
<MemberSignature Language="C#" Value="public int Requisition { set; };" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>System.Int32</ReturnType>
</ReturnValue>
<Docs>
<summary>The size that was requested.</summary>
<returns>A <see cref="T:System.Int32" /></returns>
<summary>The requested toggle size</summary>
<returns>a <see cref="T:System.Int32" /></returns>
<remarks />
</Docs>
</Member>

27
generator/IGeneratable.cs
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@ -23,24 +23,37 @@ namespace GtkSharp.Generation {
public interface IGeneratable {
// The C name of the generatable
string CName {get;}
string MarshalType {get;}
string MarshalReturnType {get;}
string ToNativeReturnType {get;}
// The (short) C# name of the generatable
string Name {get;}
// The fully-qualified C# name of the generatable
string QualifiedName {get;}
// The type (possibly including "ref" or "out") to use in the import
// signature when passing this generatable to unmanaged code
string MarshalType {get;}
// The type to use as the return type in an import signature when
// receiving this generatable back from unmanaged code
string MarshalReturnType {get;}
// The type to use in a managed callback signature when returning this
// generatable to unmanaged code
string ToNativeReturnType {get;}
// Generates an expression to convert var_name to MarshalType
string CallByName (string var_name);
// Generates an expression to convert var from MarshalType
string FromNative (string var);
// Generates an expression to convert var from MarshalReturnType
string FromNativeReturn (string var);
// Generates an expression to convert var to ToNativeReturnType
string ToNativeReturn (string var);
void Generate ();

48
generator/ManagedCallString.cs
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@ -28,6 +28,7 @@ namespace GtkSharp.Generation {
public class ManagedCallString {
ArrayList parms = new ArrayList ();
ArrayList special = new ArrayList ();
public ManagedCallString (Parameters parms)
{
@ -36,9 +37,37 @@ namespace GtkSharp.Generation {
if (p.IsLength && parms [i-1].IsString)
continue;
this.parms.Add (p);
IGeneratable igen = p.Generatable;
if ((igen is StructGen || p.PassAs != "") &&
(p.Name != igen.FromNative (p.Name)))
this.special.Add (true);
else
this.special.Add (false);
}
}
public string Setup (string indent)
{
string ret = "";
for (int i = 0; i < parms.Count; i ++) {
if ((bool)special[i] == false)
continue;
Parameter p = parms [i] as Parameter;
IGeneratable igen = p.Generatable;
string pass_as = igen is StructGen ? "ref" : p.PassAs;
ret += indent + igen.QualifiedName + " my" + p.Name;
if (igen is StructGen || p.PassAs == "ref")
ret += " = " + igen.FromNative (p.Name);
ret += ";\n";
}
return ret;
}
public override string ToString ()
{
if (parms.Count < 1)
@ -50,11 +79,28 @@ namespace GtkSharp.Generation {
Parameter p = parms [i] as Parameter;
IGeneratable igen = p.Generatable;
result [i] = igen is StructGen ? "ref " : (p.PassAs == "" ? "" : p.PassAs + " ");
result [i] += igen.FromNative (p.Name);
result [i] += ((bool)special[i]) ? "my" + p.Name : igen.FromNative (p.Name);
}
return String.Join (", ", result);
}
public string Finish (string indent)
{
string ret = "";
for (int i = 0; i < parms.Count; i ++) {
if ((bool)special[i] == false)
continue;
Parameter p = parms [i] as Parameter;
IGeneratable igen = p.Generatable;
ret += indent + p.Name + " = " + igen.CallByName ("my" + p.Name) + ";\n";
}
return ret;
}
}
}

15
generator/Signal.cs
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@ -165,9 +165,16 @@ namespace GtkSharp.Generation {
if (parms != null) {
for (int i = 1; i < parms.Count; i++) {
sw.WriteLine ("\t\tpublic " + parms[i].CSType + " " + parms[i].StudlyName + "{");
sw.WriteLine ("\t\t\tget {");
sw.WriteLine ("\t\t\t\treturn (" + parms[i].CSType + ") Args[" + (i - 1) + "];");
sw.WriteLine ("\t\t\t}");
if (parms[i].PassAs != "out") {
sw.WriteLine ("\t\t\tget {");
sw.WriteLine ("\t\t\t\treturn (" + parms[i].CSType + ") Args[" + (i - 1) + "];");
sw.WriteLine ("\t\t\t}");
}
if (parms[i].PassAs != "") {
sw.WriteLine ("\t\t\tset {");
sw.WriteLine ("\t\t\t\tArgs[" + (i - 1) + "] = (" + parms[i].CSType + ")value;");
sw.WriteLine ("\t\t\t}");
}
sw.WriteLine ("\t\t}");
sw.WriteLine ();
}
@ -222,8 +229,10 @@ namespace GtkSharp.Generation {
sw.WriteLine ("\t\tstatic " + retval.ToNativeType + " " + Name.ToLower() + "_cb (" + isig.ToString () + ")");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\t{0} obj = GLib.Object.GetObject ({1}, false) as {0};", implementor != null ? implementor.Name : container_type.Name, parms[0].Name);
sw.Write (call.Setup ("\t\t\t"));
sw.Write ("\t\t\t{0}", IsVoid ? "" : "return ");
sw.WriteLine ("obj.{0} ({1});", "On" + Name, call.ToString ());
sw.Write (call.Finish ("\t\t\t"));
sw.WriteLine ("\t\t}\n");
string cname = "\"" + elem.GetAttribute("cname") + "\"";
sw.WriteLine ("\t\tprivate static void Override" + Name + " (GLib.GType gtype)");

15
generator/SignalHandler.cs
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@ -65,8 +65,14 @@ namespace GtkSharp.Generation {
if (i > 0)
result += ", ";
if (parms[i].PassAs != "")
result += parms[i].PassAs + " ";
result += (parms[i].MarshalType + " arg" + i);
}
result = result.Replace ("out ref", "out");
result = result.Replace ("ref ref", "ref");
return result;
}
}
@ -75,6 +81,7 @@ namespace GtkSharp.Generation {
get {
string result = SymbolTable.Table.GetName (retval.CType);
for (int i = 0; i < parms.Count; i++) {
result += parms[i].PassAs;
if (parms[i].Generatable is ObjectGen || parms[i].Generatable is InterfaceGen) {
result += "Object";
} else {
@ -140,6 +147,9 @@ namespace GtkSharp.Generation {
sw.WriteLine("\t\t\targs.Args = new object[" + (parms.Count-1) + "];");
}
for (int idx=1; idx < parms.Count; idx++) {
if (parms[idx].PassAs == "out")
continue;
string ctype = parms[idx].CType;
ClassBase wrapper = table.GetClassGen (ctype);
if ((wrapper != null && !(wrapper is StructBase)) || table.IsManuallyWrapped (ctype)) {
@ -159,6 +169,11 @@ namespace GtkSharp.Generation {
sw.WriteLine("\t\t\targv[0] = inst._obj;");
sw.WriteLine("\t\t\targv[1] = args;");
sw.WriteLine("\t\t\tinst._handler.DynamicInvoke(argv);");
for (int idx=1; idx < parms.Count; idx++) {
if (parms[idx].PassAs != "") {
sw.WriteLine ("\t\t\targ" + idx + " = " + table.ToNativeReturn (parms[idx].CType, "((" + parms[idx].CSType + ")args.Args[" + (idx - 1) + "])") + ";");
}
}
if (retval.CSType != "void") {
sw.WriteLine ("\t\t\tif (args.RetVal == null)");
if (retval.CSType == "bool")

2
generator/VirtualMethod.cs
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@ -81,11 +81,13 @@ namespace GtkSharp.Generation {
sw.WriteLine ("\t\tstatic " + MarshalReturnType + " " + Name + "Callback (" + isig + ")");
sw.WriteLine ("\t\t{");
sw.WriteLine ("\t\t\t" + type + " __obj = GLib.Object.GetObject (" + name + ", false) as " + type + ";");
sw.Write (call.Setup ("\t\t\t"));
if (retval.CSType == "void")
sw.WriteLine ("\t\t\t" + call_string + ";");
else {
sw.WriteLine ("\t\t\treturn " + SymbolTable.Table.ToNativeReturn (retval.CType, call_string) + ";");
}
sw.Write (call.Finish ("\t\t\t"));
sw.WriteLine ("\t\t}");
}

1
gtk/Gtk.metadata
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@ -69,6 +69,7 @@
<attr path="/api/namespace/interface[@cname='GtkEditable']/method[@name='InsertText']/*/*[@name='position']" name="pass_as">ref</attr>
<attr path="/api/namespace/interface[@cname='GtkEditable']/method[@name='SetEditable']" name="name">SetIsEditable</attr>
<attr path="/api/namespace/interface[@cname='GtkEditable']/signal[@name='DeleteText']" name="name">TextDeleted</attr>
<attr path="/api/namespace/interface[@cname='GtkEditable']/signal[@name='InsertText']/*/*[@name='position']" name="pass_as">ref</attr>
<attr path="/api/namespace/interface[@cname='GtkEditable']/signal[@name='InsertText']" name="name">TextInserted</attr>
<attr path="/api/namespace/interface[@cname='GtkFileChooser']/method[@name='GetFilenames']" name="hidden">1</attr>
<attr path="/api/namespace/interface[@cname='GtkFileChooser']/method[@name='GetUris']" name="hidden">1</attr>

9
sample/Size.cs
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@ -18,6 +18,7 @@ namespace GtkSamples {
Gtk.Window win = new Gtk.Window ("Gtk# Hello World");
win.DeleteEvent += new DeleteEventHandler (Window_Delete);
win.SizeAllocated += new SizeAllocatedHandler (Size_Allocated);
win.SizeRequested += new SizeRequestedHandler (Size_Requested);
win.ShowAll ();
Application.Run ();
return 0;
@ -29,6 +30,14 @@ namespace GtkSamples {
args.RetVal = true;
}
static void Size_Requested (object obj, SizeRequestedArgs args)
{
Requisition req = args.Requisition;
Console.WriteLine ("Requesting 100 x 100");
req.Width = req.Height = 100;
args.Requisition = req;
}
static void Size_Allocated (object obj, SizeAllocatedArgs args)
{
Rectangle rect = args.Allocation;