* 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
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include <assert.h>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <limits>
+#include <vector>
-#include <glib-2.0/glib.h>
#include <QComboBox>
+#include <QDebug>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QSlider>
-#include "enum.h"
+#include <libsigrokcxx/libsigrokcxx.hpp>
-using namespace boost;
-using namespace std;
+#include "enum.hpp"
+
+using std::abs;
+// Note that "using std::isnan;" is _not_ put here since that would break
+// compilation on some platforms. Use "std::isnan()" instead in checks below.
+using std::numeric_limits;
+using std::pair;
+using std::vector;
namespace pv {
namespace prop {
-Enum::Enum(QString name,
- vector<pair<const void*, QString> > values,
- function<GVariant* ()> getter,
- function<void (GVariant*)> setter) :
- Property(name),
- _values(values),
- _getter(getter),
- _setter(setter),
- _selector(NULL)
+Enum::Enum(QString name, QString desc,
+ vector<pair<Glib::VariantBase, QString> > values,
+ Getter getter, Setter setter) :
+ Property(name, desc, getter, setter),
+ values_(values),
+ is_range_(false),
+ selector_(nullptr),
+ slider_layout_widget_(nullptr),
+ slider_(nullptr),
+ slider_label_(nullptr)
{
+ // Try to determine whether the values make up a range, created by e.g.
+ // std_gvar_min_max_step_thresholds()
+
+ vector<double> deltas;
+ double prev_value = 0;
+
+ for (const pair<Glib::VariantBase, QString> &v : values_) {
+ gdouble value;
+ if (v.first.is_of_type(Glib::VariantType("d"))) {
+ g_variant_get((GVariant*)(v.first.gobj()), "d", &value);
+ } else if (v.first.is_of_type(Glib::VariantType("(dd)"))) {
+ gdouble dummy;
+ g_variant_get((GVariant*)(v.first.gobj()), "(dd)", &value, &dummy);
+ } else
+ break; // Type not d or (dd), so not a range that we can handle
+ deltas.push_back(value - prev_value);
+ prev_value = value;
+ }
+
+ if (deltas.size() > 0) {
+ bool constant_delta = true;
+ double prev_delta = numeric_limits<double>::quiet_NaN();
+
+ bool skip_first = true;
+ for (double delta : deltas) {
+ // First value is incorrect, it's the delta to 0 since no
+ // previous value existed yet
+ if (skip_first) {
+ skip_first = false;
+ continue;
+ }
+ if (std::isnan(prev_delta))
+ prev_delta = delta;
+
+ // 2*DBL_EPSILON doesn't work here, so use a workaround
+ if (abs(delta - prev_delta) > (delta/10))
+ constant_delta = false;
+
+ prev_delta = delta;
+ }
+
+ if (constant_delta)
+ is_range_ = true;
+ }
}
-QWidget* Enum::get_widget(QWidget *parent)
+QWidget* Enum::get_widget(QWidget *parent, bool auto_commit)
{
- if (_selector)
- return _selector;
-
- const void *value = NULL;
- if (_getter)
- value = _getter();
-
- _selector = new QComboBox(parent);
- for (unsigned int i = 0; i < _values.size(); i++) {
- const pair<const void*, QString> &v = _values[i];
- _selector->addItem(v.second,
- qVariantFromValue((void*)v.first));
- if (v.first == value)
- _selector->setCurrentIndex(i);
+ if (!getter_)
+ return nullptr;
+
+ Glib::VariantBase variant;
+
+ try {
+ variant = getter_();
+ } catch (const sigrok::Error &e) {
+ qWarning() << tr("Querying config key %1 resulted in %2").arg(name_, e.what());
+ return nullptr;
}
- return _selector;
+ if (!variant.gobj())
+ return nullptr;
+
+ if (is_range_) {
+ // Use slider
+ if (slider_layout_widget_)
+ return slider_layout_widget_;
+
+ slider_ = new QSlider();
+ // Sliders can't handle float values, so we just use it to specify
+ // the number of steps that we're away from the range's beginning
+ slider_->setOrientation(Qt::Horizontal);
+ slider_->setMinimum(0);
+ slider_->setMaximum(values_.size() - 1);
+ slider_->setSingleStep(1);
+
+ slider_label_ = new QLabel();
+
+ slider_layout_widget_ = new QWidget(parent);
+ QHBoxLayout *layout = new QHBoxLayout(slider_layout_widget_);
+ layout->addWidget(slider_);
+ layout->addWidget(slider_label_);
+
+ update_widget();
+
+ if (auto_commit)
+ connect(slider_, SIGNAL(valueChanged(int)),
+ this, SLOT(on_value_changed(int)));
+
+ return slider_layout_widget_;
+
+ } else {
+ // Use combo box
+ if (selector_)
+ return selector_;
+
+ selector_ = new QComboBox(parent);
+ for (unsigned int i = 0; i < values_.size(); i++) {
+ const pair<Glib::VariantBase, QString> &v = values_[i];
+ selector_->addItem(v.second, qVariantFromValue(v.first));
+ }
+
+ update_widget();
+
+ if (auto_commit)
+ connect(selector_, SIGNAL(currentIndexChanged(int)),
+ this, SLOT(on_current_index_changed(int)));
+
+ return selector_;
+ }
}
-void Enum::commit()
+void Enum::update_widget()
{
- assert(_setter);
+ Glib::VariantBase variant;
- if (!_selector)
+ try {
+ variant = getter_();
+ } catch (const sigrok::Error &e) {
+ qWarning() << tr("Querying config key %1 resulted in %2").arg(name_, e.what());
return;
+ }
- const int index = _selector->currentIndex();
- if (index < 0)
- return;
+ assert(variant.gobj());
- _setter(_selector->itemData(index).value<GVariant*>());
+ if (is_range_) {
+
+ // Use slider
+ if (!slider_layout_widget_)
+ return;
+
+ for (unsigned int i = 0; i < values_.size(); i++) {
+ const pair<Glib::VariantBase, QString> &v = values_[i];
+
+ // g_variant_equal() doesn't handle floating point properly
+ if (v.first.is_of_type(Glib::VariantType("d"))) {
+ gdouble a, b;
+ g_variant_get(variant.gobj(), "d", &a);
+ g_variant_get((GVariant*)(v.first.gobj()), "d", &b);
+
+ if (abs(a - b) <= 2 * DBL_EPSILON) {
+ slider_->setValue(i);
+ slider_label_->setText(v.second);
+ }
+ } else {
+ // Check for "(dd)" type and handle it if it's found
+ if (v.first.is_of_type(Glib::VariantType("(dd)"))) {
+ gdouble a1, a2, b1, b2;
+ g_variant_get(variant.gobj(), "(dd)", &a1, &a2);
+ g_variant_get((GVariant*)(v.first.gobj()), "(dd)", &b1, &b2);
+
+ if ((abs(a1 - b1) <= 2 * DBL_EPSILON) && \
+ (abs(a2 - b2) <= 2 * DBL_EPSILON)) {
+ slider_->setValue(i);
+ slider_label_->setText(v.second);
+ }
+
+ } else {
+ qWarning() << "Enum property" << name() << "encountered unsupported type";
+ return;
+ }
+ }
+ }
+
+ } else {
+ // Use combo box
+ if (!selector_)
+ return;
+
+ for (unsigned int i = 0; i < values_.size(); i++) {
+ const pair<Glib::VariantBase, QString> &v = values_[i];
+
+ // g_variant_equal() doesn't handle floating point properly
+ if (v.first.is_of_type(Glib::VariantType("d"))) {
+ gdouble a, b;
+ g_variant_get(variant.gobj(), "d", &a);
+ g_variant_get((GVariant*)(v.first.gobj()), "d", &b);
+ if (abs(a - b) <= 2 * DBL_EPSILON)
+ selector_->setCurrentIndex(i);
+ } else {
+ // Check for "(dd)" type and handle it if it's found
+ if (v.first.is_of_type(Glib::VariantType("(dd)"))) {
+ gdouble a1, a2, b1, b2;
+ g_variant_get(variant.gobj(), "(dd)", &a1, &a2);
+ g_variant_get((GVariant*)(v.first.gobj()), "(dd)", &b1, &b2);
+ if ((abs(a1 - b1) <= 2 * DBL_EPSILON) && \
+ (abs(a2 - b2) <= 2 * DBL_EPSILON))
+ selector_->setCurrentIndex(i);
+
+ } else
+ // Handle all other types
+ if (v.first.equal(variant))
+ selector_->setCurrentIndex(i);
+ }
+ }
+ }
+}
+
+void Enum::commit()
+{
+ assert(setter_);
+
+ if (is_range_) {
+ // Use slider
+ if (!slider_layout_widget_)
+ return;
+
+ setter_(values_.at(slider_->value()).first);
+
+ update_widget();
+ } else {
+ // Use combo box
+ if (!selector_)
+ return;
+
+ const int index = selector_->currentIndex();
+ if (index < 0)
+ return;
+
+ setter_(selector_->itemData(index).value<Glib::VariantBase>());
+
+ // The combo box needs no update, it already shows the current value
+ // by definition: the user picked it
+ }
+}
+
+void Enum::on_current_index_changed(int)
+{
+ commit();
+}
+
+void Enum::on_value_changed(int)
+{
+ commit();
}
-} // prop
-} // pv
+} // namespace prop
+} // namespace pv
projects / pulseview.git / blobdiff