void PythonEngine::loadScript(const QString &filename)
{
QFileInfo info(filename);
initializePython(info.canonicalPath());
PythonThread pt;
PythonScript *script = new PythonScript(filename);
m_identifier = script->identifier();
if(script->module()) {
// make sure there is an Engine class defined
if (PyObject_HasAttrString(script->module().ptr(), "Engine")) {
try {
prepareToCatchError();
// instatiate the new Engine
m_instance = script->module().attr("Engine")();
} catch (error_already_set const &) {
catchError();
return;
}
m_script = script;
} else {
delete script;
PythonError::instance()->append(tr("PythonEngine: checking ") + filename + "...");
PythonError::instance()->append(tr(" - script has no 'Engine' class defined"));
}
} else {
delete script;
PythonError::instance()->append(tr("PythonEngine: checking ") + filename + "...");
PythonError::instance()->append(tr(" - no module"));
}
}
QWidget* PythonTool::settingsWidget()
{
if (!m_script)
return 0; // nothing we can do -- we don't have any real scripts
PythonThread pt;
if(!m_settingsWidget)
{
m_settingsWidget = new QWidget();
m_settingsWidget->setLayout( new QVBoxLayout() );
if (PyObject_HasAttrString(m_instance.ptr(), "settingsWidget")) {
try {
prepareToCatchError();
QWidget *widget = extract<QWidget*>(m_instance.attr("settingsWidget")());
if (widget)
m_settingsWidget->layout()->addWidget(widget);
} catch (error_already_set const &) {
catchError();
}
}
connect(m_settingsWidget, SIGNAL(destroyed()), this, SLOT(settingsWidgetDestroyed()));
}
return m_settingsWidget;
}
QString PythonTool::name() const
{
PythonThread pt;
if (!PyObject_HasAttrString(m_instance.ptr(), "name"))
return tr("Unknown Python Tool");
try {
prepareToCatchError();
const char *name = extract<const char*>(m_instance.attr("name")());
return QString(name);
} catch(error_already_set const &) {
catchError();
return tr("Unknown Python Tool");
}
}
QString PythonTool::description() const
{
PythonThread pt;
if (!PyObject_HasAttrString(m_instance.ptr(), "description"))
return tr("N/A");
try {
prepareToCatchError();
const char *desc = extract<const char*>(m_instance.attr("description")());
return QString(desc);
} catch(error_already_set const &) {
catchError();
return tr("N/A");
}
}
double PythonEngine::transparencyDepth() const
{
if (!m_script)
return 0.0; // nothing we can do
PythonThread pt;
try {
prepareToCatchError();
// return transparencyDepth from python script if the function is defined
if (PyObject_HasAttrString(m_instance.ptr(), "transparencyDepth"))
return extract<double>(m_instance.attr("transparencyDepth")());
} catch(error_already_set const &) {
catchError();
}
return 0.0;
}
PythonTool::PythonTool(QObject *parent, const QString &filename) : Tool(parent),
m_script(0), m_settingsWidget(0)
{
loadScript(filename);
QAction *action = activateAction();
action->setIcon(QIcon(QString::fromUtf8(":/python/python.png")));
PythonThread pt;
if (PyObject_HasAttrString(m_instance.ptr(), "toolTip")) {
try {
prepareToCatchError();
const char *toolTip = extract<const char*>(m_instance.attr("toolTip")());
action->setToolTip(QString(toolTip));
} catch(error_already_set const &) {
catchError();
}
}
}
void PythonTool::loadScript(const QString &filename)
{
QFileInfo info(filename);
initializePython(info.canonicalPath());
PythonThread pt;
PythonScript *script = new PythonScript(filename);
m_identifier = script->identifier();
if(script->module()) {
// make sure there is a Tool class defined
if (PyObject_HasAttrString(script->module().ptr(), "Tool")) {
try {
prepareToCatchError();
// instantiate the new tool
m_instance = script->module().attr("Tool")();
// if we have a settings widget already, add the python content...
if (m_settingsWidget) {
if (PyObject_HasAttrString(m_instance.ptr(), "settingsWidget")) {
QWidget *widget = extract<QWidget*>(m_instance.attr("settingsWidget")());
if (widget)
m_settingsWidget->layout()->addWidget(widget);
}
}
} catch (error_already_set const &) {
catchError();
return;
}
m_script = script;
} else {
delete script;
PythonError::instance()->append(tr("PythonTool: checking ") + filename + "...");
PythonError::instance()->append(tr(" - script has no 'Tool' class defined"));
}
} else {
delete script;
PythonError::instance()->append(tr("PythonTool: checking ") + filename + "...");
PythonError::instance()->append(tr(" - no module"));
}
}
bool PythonTool::paint(GLWidget *widget)
{
PythonThread pt;
if (!PyObject_HasAttrString(m_instance.ptr(), "paint"))
return false;
try {
prepareToCatchError();
boost::python::reference_existing_object::apply<GLWidget*>::type converter;
PyObject *obj = converter(widget);
object real_obj = object(handle<>(obj));
m_instance.attr("paint")(real_obj);
} catch(error_already_set const &) {
catchError();
}
return true;
}
Engine::Layers PythonEngine::layers() const
{
if (!m_script)
return Engine::Opaque; // nothing we can do
PythonThread pt;
try {
prepareToCatchError();
// return layers from python script if the function is defined
if (PyObject_HasAttrString(m_instance.ptr(), "layers"))
return extract<Engine::Layers>(m_instance.attr("layers")());
} catch(error_already_set const &) {
catchError();
}
// return NoFlags, don't print an error, don't want to overwhelm new users with errors
return Engine::Opaque;
}
bool PythonEngine::renderOpaque(PainterDevice *pd)
{
PythonThread pt;
if (!m_script)
return false; // nothing we can do
try {
prepareToCatchError();
boost::python::reference_existing_object::apply<PainterDevice*>::type converter;
PyObject *obj = converter(pd);
object real_obj = object(handle<>(obj));
m_instance.attr("renderOpaque")(real_obj);
} catch(error_already_set const &) {
catchError();
}
return true;
}
object PythonScript::module() const
{
QFileInfo fileInfo(m_fileName);
if(fileInfo.lastModified() > m_lastModified)
{
try
{
prepareToCatchError();
m_module = object(handle<>(PyImport_ReloadModule(m_module.ptr())));
}
catch(error_already_set const &)
{
catchError();
}
m_lastModified = fileInfo.lastModified();
}
return m_module;
}
PythonScript::PythonScript(const QString &fileName)
{
m_fileName = fileName;
QFileInfo info(fileName);
m_moduleName = info.baseName();
m_lastModified = info.lastModified();
try
{
prepareToCatchError();
// try to import the module
m_module = import(m_moduleName.toAscii().data());
// import doesn't really reload the module if it was already loaded
// to be save, we always reload it
m_module = object(handle<>(PyImport_ReloadModule(m_module.ptr())));
}
catch(error_already_set const &)
{
catchError();
}
}
void PythonEngine::readSettings(QSettings &settings)
{
Engine::readSettings(settings);
if (!m_script)
return;
if (!PyObject_HasAttrString(m_instance.ptr(), "readSettings"))
return;
try {
prepareToCatchError();
boost::python::return_by_value::apply<QSettings*>::type qconverter;
PyObject *qobj = qconverter(&settings);
object real_qobj = object(handle<>(qobj));
m_instance.attr("readSettings")(real_qobj);
} catch(error_already_set const &) {
catchError();
}
}
QUndoCommand* PythonTool::wheelEvent(GLWidget *widget, QWheelEvent *event)
{
PythonThread pt;
if (!PyObject_HasAttrString(m_instance.ptr(), "wheelEvent"))
return 0;
try {
prepareToCatchError();
boost::python::reference_existing_object::apply<GLWidget*>::type converter;
PyObject *obj = converter(widget);
object real_obj = object(handle<>(obj));
boost::python::return_by_value::apply<QWheelEvent*>::type qconverter;
PyObject *qobj = qconverter(event);
object real_qobj = object(handle<>(qobj));
return extract<QUndoCommand*>(m_instance.attr("wheelEvent")(real_obj, real_qobj));
} catch(error_already_set const &) {
catchError();
}
return 0;
}
