python/meter.cpp

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/***************************************************************************
 * Copyright (C) 2003-2004 Adam Geitgey <adam@rootnode.org>                *
 * Copyright (C) 2003 Hans Karlsson <karlsson.h@home.se>                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#if defined(_XOPEN_SOURCE) && !defined(__SUNPRO_CC)
#undef _XOPEN_SOURCE
#endif

#include "python/meter.h"

#include <Python.h>
#include <qobject.h>
#include "../karamba.h"
#include "../karambaapp.h"
#include "meters/meter.h"
#include "lineparser.h"

#include <QList>

bool checkKaramba(long widget)
{
    /*
      if (!karambaApp)
      {
        PyErr_SetString(PyExc_ValueError, "app pointer was 0.");
        return false;
      }
    */
    if (!widget) {
        PyErr_SetString(PyExc_ValueError, "widget pointer was 0.");
        return false;
    }
/*
    if (!karambaApp->hasKaramba((Karamba*)widget)) {
        QString tmp;

        tmp.sprintf("no %x widget found.", (unsigned int)widget);
        PyErr_SetString(PyExc_ValueError, tmp.toAscii().constData());
        return false;
    }
*/
    return true;
}

bool checkMeter(long widget, long meter, const char* type)
{
    if (!meter) {
        PyErr_SetString(PyExc_ValueError, "meter pointer was 0.");
        return false;
    }
    if (!((Karamba*)widget)->hasMeter((Meter*)meter)) {
        QString tmp;

        tmp.sprintf("widget does not have meter %x.", (unsigned int)meter);
        PyErr_SetString(PyExc_ValueError, tmp.toAscii().constData());
        return false;
    }
    if (!((QObject*)meter)->inherits(type)) {
        QString tmp;

        tmp.sprintf("meter is not type of %s.", type);
        PyErr_SetString(PyExc_TypeError, tmp.toAscii().constData());
        return false;
    }
    return true;
}

bool checkKarambaAndMeter(long widget, long meter, const char* type)
{
    return checkKaramba(widget) && checkMeter(widget, meter, type);
}

// This just throws awya extra bytes.
// I guess there is a better way to do this...
QString fromUcs4(quint32* ucs4)
{
    QString result = "";
    while (*ucs4 != 0) {
        result += QChar((quint16) * ucs4);
        ++ucs4;
    }
    return result;
}

// Converts a Python String to a QString with Unicode support
QString PyString2QString(PyObject* text)
{
    QString qtext;
    if (PyString_CheckExact(text)) {
        char* t = PyString_AsString(text);
        qtext = QString::fromAscii(t);
    } else if (PyUnicode_CheckExact(text)) {
        Py_UNICODE* t = PyUnicode_AsUnicode(text);
        if (sizeof(Py_UNICODE) == 4)
            qtext = fromUcs4((quint32*)t);
        else
            qtext.setUtf16((quint16*)t, sizeof(t) / 4);
    } else {
        // Error raise execption ...
    }
    return qtext;
}

// Converts a QString to a Python String with Unicode support
PyObject* QString2PyString(QString string)
{
    PyObject *pyString;

    const unsigned short* tmp = string.utf16();
    bool dofree = false;

    if (tmp) {
#if Py_UNICODE_SIZE == 4

        Py_UNICODE* buf = new Py_UNICODE[string.length()];

        for (int i = 0; i < string.length(); i++) {
            buf[i] = tmp[i];
        }
        dofree = true;

#else

        Py_UNICODE* buf = (Py_UNICODE*) tmp;

#endif

        pyString = PyUnicode_FromUnicode(buf, string.length());

        if (dofree) {
            delete [] buf;
        }
    }
    else
        pyString = PyString_FromString("");

    return pyString;
}


long getMeter(long widget, char* name)
{
    Karamba* theme = (Karamba*)widget;

    QGraphicsItem *meter;
    QList<QGraphicsItem*> list = ((QGraphicsItemGroup*)theme)->children();
    foreach(meter, list) {
        if (((Meter*) meter)->objectName() == name)
            return (long)(Meter*)meter;
    }

    return 0;
}

PyObject* py_getThemeMeter(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    char* name;
    if (!PyArg_ParseTuple(args, (char*)"ls", &widget, &name))
        return NULL;
    if (!checkKaramba(widget))
        return NULL;
    if (!name)
        return NULL;
    meter = getMeter(widget, name);
    if (!checkMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return (Py_BuildValue((char*)"l", meter));
}

PyObject* py_getSize(PyObject *, PyObject *args, QString type)
{
    long widget;
    long meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return Py_BuildValue((char*)"(i,i)", ((Meter*)meter)->getWidth(),
                         ((Meter*)meter)->getHeight());
}

PyObject* py_resize(PyObject *, PyObject *args, QString type)
{
    long widget, meter, x, y;
    if (!PyArg_ParseTuple(args, (char*)"llll", &widget, &meter, &x, &y))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->setSize(((Meter*)meter)->getX(), ((Meter*)meter)->getY(),
                             x, y);
    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_getPos(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return Py_BuildValue((char*)"(i,i)", ((Meter*)meter)->getX(),
                         ((Meter*)meter)->getY());
}

PyObject* py_move(PyObject *, PyObject *args, QString type)
{
    long widget, meter, x, y;
    if (!PyArg_ParseTuple(args, (char*)"llll", &widget, &meter, &x, &y))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;

    ((Karamba*)widget)->moveMeter((Meter*)meter, (int)x, (int)y);

    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_hide(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->hide();
    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_show(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->show();
    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_getValue(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return Py_BuildValue((char*)"l", ((Meter*)meter)->getValue());
}

PyObject* py_setValue(PyObject *, PyObject *args, QString type)
{
    long widget, meter, l;
    if (!PyArg_ParseTuple(args, (char*)"lll", &widget, &meter, &l))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->setValue(l);
    return Py_BuildValue((char*)"l", ((long)meter));
}

PyObject* py_getStringValue(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return Py_BuildValue((char*)"O",
                         QString2PyString(((Meter*)meter)->getStringValue()));
}

PyObject* py_setStringValue(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    PyObject* s;
    if (!PyArg_ParseTuple(args, (char*)"llO", &widget, &meter, &s))
        return NULL;
    if (!s)
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->setValue(PyString2QString(s));
    return Py_BuildValue((char*)"l", ((long)meter));
}

PyObject* py_getMinMax(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return Py_BuildValue((char*)"(i,i)", ((Meter*)meter)->getMax(),
                         ((Meter*)meter)->getMin());
}

PyObject* py_setMinMax(PyObject *, PyObject *args, QString type)
{
    long widget, meter, x, y;
    if (!PyArg_ParseTuple(args, (char*)"llll", &widget, &meter, &x, &y))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->setMin(x);
    ((Meter*)meter)->setMax(y);
    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_getSensor(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    QString s;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    return Py_BuildValue((char*)"s",
                         ((Karamba*)widget)->getSensor((Meter*)meter).toAscii().constData());
}

PyObject* py_setSensor(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    char* s;

    if (!PyArg_ParseTuple(args, (char*)"lls", &widget, &meter, &s))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Karamba*)widget)->setSensor(LineParser(s), (Meter*)meter);
    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_setColor(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    long r, g, b;
    if (!PyArg_ParseTuple(args, (char*)"lllll", &widget, &meter, &r, &g, &b))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    ((Meter*)meter)->setColor(QColor(r, g, b));
    return Py_BuildValue((char*)"l", 1);
}

PyObject* py_getColor(PyObject *, PyObject *args, QString type)
{
    long widget, meter;
    if (!PyArg_ParseTuple(args, (char*)"ll", &widget, &meter))
        return NULL;
    if (!checkKarambaAndMeter(widget, meter, type.toAscii().constData()))
        return NULL;
    QColor color = ((Meter*)meter)->getColor();
    return Py_BuildValue((char*)"(i,i,i)", color.red(), color.green(), color.blue());
}