v0.4 release

DSLogic-gui/pv/prop/binding/decoderoptions.cpp

@@ -0,0 +1,148 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <libsigrokdecode/libsigrokdecode.h>
+
+#include "decoderoptions.h"
+
+#include <boost/bind.hpp>
+#include <boost/foreach.hpp>
+#include <boost/none_t.hpp>
+
+#include <pv/data/decoderstack.h>
+#include <pv/data/decode/decoder.h>
+#include <pv/prop/double.h>
+#include <pv/prop/enum.h>
+#include <pv/prop/int.h>
+#include <pv/prop/string.h>
+
+using boost::bind;
+using boost::none;
+using boost::shared_ptr;
+using std::make_pair;
+using std::map;
+using std::pair;
+using std::string;
+using std::vector;
+
+namespace pv {
+namespace prop {
+namespace binding {
+
+DecoderOptions::DecoderOptions(
+	shared_ptr<pv::data::DecoderStack> decoder_stack,
+	shared_ptr<data::decode::Decoder> decoder) :
+	_decoder_stack(decoder_stack),
+	_decoder(decoder)
+{
+	assert(_decoder);
+
+	const srd_decoder *const dec = _decoder->decoder();
+	assert(dec);
+
+	for (GSList *l = dec->options; l; l = l->next)
+	{
+		const srd_decoder_option *const opt =
+			(srd_decoder_option*)l->data;
+
+		const QString name = QString::fromUtf8(opt->desc);
+
+		const Property::Getter getter = bind(
+			&DecoderOptions::getter, this, opt->id);
+		const Property::Setter setter = bind(
+			&DecoderOptions::setter, this, opt->id, _1);
+
+		shared_ptr<Property> prop;
+
+		if (opt->values)
+			prop = bind_enum(name, opt, getter, setter);
+		else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("d")))
+			prop = shared_ptr<Property>(new Double(name, 2, "",
+				none, none, getter, setter));
+		else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("x")))
+			prop = shared_ptr<Property>(
+				new Int(name, "", none, getter, setter));
+		else if (g_variant_is_of_type(opt->def, G_VARIANT_TYPE("s")))
+			prop = shared_ptr<Property>(
+				new String(name, getter, setter));
+		else
+			continue;
+
+		_properties.push_back(prop);
+	}
+}
+
+shared_ptr<Property> DecoderOptions::bind_enum(
+	const QString &name, const srd_decoder_option *option,
+	Property::Getter getter, Property::Setter setter)
+{
+	vector< pair<GVariant*, QString> > values;
+	for (GSList *l = option->values; l; l = l->next) {
+		GVariant *const var = (GVariant*)l->data;
+		assert(var);
+		values.push_back(make_pair(var, print_gvariant(var)));
+	}
+
+	return shared_ptr<Property>(new Enum(name, values, getter, setter));
+}
+
+GVariant* DecoderOptions::getter(const char *id)
+{
+	GVariant *val = NULL;
+
+	assert(_decoder);
+
+	// Get the value from the hash table if it is already present
+	const map<string, GVariant*>& options = _decoder->options();
+	map<string, GVariant*>::const_iterator iter = options.find(id);
+
+	if (iter != options.end())
+		val = (*iter).second;
+	else
+	{
+		assert(_decoder->decoder());
+
+		// Get the default value if not
+		for (GSList *l = _decoder->decoder()->options; l; l = l->next)
+		{
+			const srd_decoder_option *const opt =
+				(srd_decoder_option*)l->data;
+			if (strcmp(opt->id, id) == 0) {
+				val = opt->def;
+				break;
+			}
+		}
+	}
+
+	if (val)
+		g_variant_ref(val);
+
+	return val;
+}
+
+void DecoderOptions::setter(const char *id, GVariant *value)
+{
+	assert(_decoder);
+	_decoder->set_option(id, value);
+}
+
+} // binding
+} // prop
+} // pv