On Mon, Aug 6, 2012 at 12:29 PM, Phil Thompson
<p...@riverbankcomputing.com> wrote:
> On Mon, 6 Aug 2012 12:15:44 -0400, Evade Flow <evadef...@gmail.com> wrote:
>> I'm trying to write a PyQt4-based mock object for a C++ app exposed over
>> D-Bus with the following interface:
>>
>> Q_CLASSINFO("D-Bus Interface", "com.acme.Audio.Control")
>> Q_CLASSINFO("D-Bus Introspection",
>> ' <interface name="com.acme.Audio.Control">\n'
>> ' <method name="echo">\n'
>> ' <arg direction="in" type="s" name="phrase"/>\n'
>> ' <arg direction="out" type="s" name="echoed"/>\n'
>> ' </method>\n'
>> ' <method name="setParams">\n'
>> ' <arg direction="out" type="(i)" name="error"/>\n'
>> ' <arg direction="in" type="a(iiiii)"
>> name="audioSourceParameter"/>\n'
>> ' <annotation value="QVector<AudioSourceParameters>"
>> name="com.trolltech.QtDBus.QtTypeName.In0"/>\n'
>> ' <annotation value="Errors::ErrorCode"
>> name="com.trolltech.QtDBus.QtTypeName.Out0"/>\n'
>> ' </method>\n'
>> ' </interface>\n')
>>
>> It's unclear to me how how the setParams() function should be decorated.
>> For the echo() function, I have:
>>
>> @pyqtSlot(str, result=str)
>> def echo(self, phrase):
>> return self.parent().echo(phrase)
>>
>> But what should I put for setParams()? I was tempted to write:
>>
>> @pyqtSlot('a(iiiii)', result='(i)')
>> def setParams(self, volume):
>> return self.parent().echo(phrase)
>>
>> But this results in:
>>
>> TypeError: C++ type 'a(iiiii)' is not supported as a pyqtSlot type
>> argument type
>>
>> So... how does one expose a function to D-Bus that accepts an array of
>> structs, each containing 5 ints?
>
> What would be the C++ signature? Try that as a string.
>
> Phil
The C++ signature is:
void setParams(QList<AudioSourceParameters> audioSourceParameters,
Errors::ErrorCode &error);
where AudioSourceParameters is defined as:
struct AudioSourceParameters
{
int volume;
int balance;
int fader;
int fadein;
int fadeout;
};
The C++ code sets things up with:
Q_DECLARE_METATYPE(QList<AudioSourceParameters>);
and:
qDBusRegisterMetaType<AudioSourceParameters>();
qDBusRegisterMetaType<QList<AudioSourceParameters> >();
The introspection XML (presumably output by qdbuscpp2xml) shows this as
'a(iiiii)'. That's what the client app (the one I'm trying to provide a
mock server for) is expecting to see.
Any ideas how to make this work with PyQt?
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