Merge GH-1522 (template georeferencing setup)

src/gdal/gdal_image_reader.cpp

@@ -1,5 +1,5 @@
 /*
- *    Copyright 2019 Kai Pastor
+ *    Copyright 2019, 2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -284,12 +284,11 @@ TemplateImage::GeoreferencingOption GdalImageReader::readGeoTransform()
 		auto const result = GDALGetGeoTransform(dataset, geo_transform.data());
 		if (result == CE_None)
 		{
-			georef.type = TemplateImage::Georeferencing_GDAL;
-			georef.source = GDALGetDriverShortName(GDALGetDatasetDriver(dataset));
 			georef.crs_spec = toProjSpec(GDALGetProjectionRef(dataset));
-			georef.pixel_to_world = { geo_transform[1], geo_transform[2],
-			                          geo_transform[4], geo_transform[5],
-			                          geo_transform[0], geo_transform[3] };
+			georef.transform.source = GDALGetDriverShortName(GDALGetDatasetDriver(dataset));
+			georef.transform.pixel_to_world = { geo_transform[1], geo_transform[2],
+			                                    geo_transform[4], geo_transform[5],
+			                                    geo_transform[0], geo_transform[3] };
 		}
 	}
 	return georef;

src/gdal/gdal_template.cpp

@@ -1,5 +1,5 @@
 /*
- *    Copyright 2019 Kai Pastor
+ *    Copyright 2019, 2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -85,7 +85,7 @@ bool GdalTemplate::loadTemplateFileImpl(bool configuring)
 	available_georef = findAvailableGeoreferencing(reader.readGeoTransform());
 	if (!configuring && is_georeferenced)
 	{
-		if (available_georef.front().type == Georeferencing_None)
+		if (!isGeoreferencingUsable())
 		{
 			// Image was georeferenced, but georeferencing info is gone -> deny to load template
 			setErrorString(::OpenOrienteering::TemplateImage::tr("Georeferencing not found"));

src/gui/select_crs_dialog.cpp

@@ -1,6 +1,6 @@
 /*
  *    Copyright 2012, 2013 Thomas Schöps
- *    Copyright 2012-2015 Kai Pastor
+ *    Copyright 2012-2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -41,9 +41,10 @@ namespace OpenOrienteering {
 namespace {
 
 enum SpecialCRS {
-	SameAsMap  = 1,
-	Local      = 2,
-	Geographic = 3
+	SameAsMap    = 1,
+	Local        = 2,
+	Geographic   = 3,
+	TemplateFile = 4,
 };
 
 
@@ -52,34 +53,30 @@ enum SpecialCRS {
 
 
 SelectCRSDialog::SelectCRSDialog(
+        const TemplateImage::GeoreferencingOptions& options,
         const Georeferencing& georef,
         QWidget* parent,
-        GeorefAlternatives alternatives,
         const QString& description )
  : QDialog(parent, Qt::WindowSystemMenuHint | Qt::WindowTitleHint)
+ , options(options)
  , georef(georef)
 {
 	setWindowModality(Qt::WindowModal);
 	setWindowTitle(tr("Select coordinate reference system"));
 
 	crs_selector = new CRSSelector(georef, nullptr);
 	if (georef.isLocal())
-		crs_selector->clear();
-
-	if (alternatives.testFlag(TakeFromMap) && !georef.isLocal())
-	{
-		crs_selector->addCustomItem(tr("Same as map"), SpecialCRS::SameAsMap);
-		crs_selector->setCurrentIndex(0); // TakeFromMap
-	}
-
-	if (alternatives.testFlag(Local) || georef.isLocal())
 	{
+		crs_selector->clear();
 		crs_selector->addCustomItem(tr("Local"), SpecialCRS::Local);
-		crs_selector->setCurrentIndex(0); // TakeFromMap or Local, both is fine.
 	}
-
-	if (alternatives.testFlag(Geographic) && !georef.isLocal())
+	else
+	{
+		if (!options.template_file.crs_spec.isEmpty())
+			crs_selector->addCustomItem(tr("From template file"), SpecialCRS::TemplateFile );
+		crs_selector->addCustomItem(tr("Same as map"), SpecialCRS::SameAsMap);
 		crs_selector->addCustomItem(tr("Geographic coordinates (WGS84)"), SpecialCRS::Geographic);
+	}
 
 	status_label = new QLabel();
 	button_box = new QDialogButtonBox(QDialogButtonBox::Cancel | QDialogButtonBox::Ok);
@@ -95,6 +92,20 @@ SelectCRSDialog::SelectCRSDialog(
 	form_layout->addItem(Util::SpacerItem::create(this));
 	crs_selector->setDialogLayout(form_layout);
 
+	auto const& crs_spec = options.effective.crs_spec;
+	if (georef.isLocal())
+	    crs_selector->setCurrentIndex(0);
+	else if (crs_spec.isEmpty())
+		crs_selector->setCurrentIndex(crs_selector->findData(SpecialCRS::SameAsMap));
+	else if (crs_spec == options.template_file.crs_spec)
+		crs_selector->setCurrentIndex(crs_selector->findData(SpecialCRS::TemplateFile));
+	else if (crs_spec == georef.getProjectedCRSSpec())
+		crs_selector->setCurrentIndex(crs_selector->findData(SpecialCRS::SameAsMap));
+	else if (crs_spec == Georeferencing::geographic_crs_spec)
+		crs_selector->setCurrentIndex(crs_selector->findData(SpecialCRS::Geographic));
+	else
+		crs_selector->setCurrentCRS(CRSTemplateRegistry().find(QString::fromLatin1("PROJ.4")), { crs_spec });
+
 	auto layout = new QVBoxLayout();
 	layout->addLayout(form_layout, 1);
 	layout->addWidget(button_box, 0);
@@ -121,6 +132,9 @@ QString SelectCRSDialog::currentCRSSpec() const
 	case SpecialCRS::Geographic:
 		spec = Georeferencing::geographic_crs_spec;
 		break;
+	case SpecialCRS::TemplateFile:
+		spec = options.template_file.crs_spec;
+		break;
 	default:
 		spec = crs_selector->currentCRSSpec();
 	}

src/gui/select_crs_dialog.h

@@ -1,6 +1,6 @@
 /*
  *    Copyright 2012, 2013 Thomas Schöps
- *    Copyright 2012-2015 Kai Pastor
+ *    Copyright 2012-2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -27,6 +27,8 @@
 #include <QObject>
 #include <QString>
 
+#include "templates/template_image.h"
+
 class QDialogButtonBox;
 class QLabel;
 class QWidget;
@@ -42,19 +44,6 @@ class SelectCRSDialog : public QDialog
 {
 Q_OBJECT
 public:
-
-	/**
-	 * Georeferencing alternatives
-	 */
-	enum GeorefAlternative
-	{
-		TakeFromMap = 1 << 0,
-		Local       = 1 << 1,
-		Geographic  = 1 << 2,
-		None        = 0
-	};
-	Q_DECLARE_FLAGS(GeorefAlternatives, GeorefAlternative)
-
 	/**
 	 * Creates a SelectCRSDialog.
 	 * 
@@ -65,9 +54,9 @@ Q_OBJECT
 	 *                     Should explain what the selected CRS will be used for.
 	 */
 	SelectCRSDialog(
+	        const TemplateImage::GeoreferencingOptions& options,
 	        const Georeferencing& georef,
 	        QWidget* parent,
-	        GeorefAlternatives alternatives,
 	        const QString& description = QString()
 	);
 
@@ -83,6 +72,7 @@ Q_OBJECT
 	void updateWidgets();
 
 private:
+	const TemplateImage::GeoreferencingOptions& options;
 	const Georeferencing& georef;
 	CRSSelector* crs_selector;
 	QLabel* status_label;
@@ -92,8 +82,4 @@ Q_OBJECT
 
 }  // namespace OpenOrienteering
 
-
-Q_DECLARE_OPERATORS_FOR_FLAGS(OpenOrienteering::SelectCRSDialog::GeorefAlternatives)
-
-
 #endif

src/gui/widgets/template_list_widget.cpp

@@ -1,6 +1,6 @@
 /*
  *    Copyright 2012, 2013 Thomas Schöps
- *    Copyright 2012-2019 Kai Pastor
+ *    Copyright 2012-2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -1102,10 +1102,10 @@ void TemplateListWidget::changeGeorefClicked()
 			if (position_action->isChecked())
 				position_action->trigger();
 		}
-		if (templ->trySetTemplateGeoreferenced(new_value, this) != new_value)
+		if (!templ->trySetTemplateGeoreferenced(new_value, this))
 		{
 			QMessageBox::warning(this, tr("Error"), tr("Cannot change the georeferencing state."));
-			georef_action->setChecked(false);
+			georef_action->setChecked(templ->isTemplateGeoreferenced());
 		}
 		updateButtons();
 	}

src/templates/template.cpp

@@ -1,6 +1,6 @@
 /*
  *    Copyright 2012, 2013 Thomas Schöps
- *    Copyright 2013-2019 Kai Pastor
+ *    Copyright 2013-2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -676,9 +676,9 @@ bool Template::canChangeTemplateGeoreferenced()
 }
 
 // virtual
-bool Template::trySetTemplateGeoreferenced(bool /*value*/, QWidget* /*dialog_parent*/)
+bool Template::trySetTemplateGeoreferenced(bool value, QWidget* /*dialog_parent*/)
 {
-	return is_georeferenced;
+	return isTemplateGeoreferenced() == value;
 }
 
 

src/templates/template.h

@@ -1,6 +1,6 @@
 /*
  *    Copyright 2012, 2013 Thomas Schöps
- *    Copyright 2012-2019 Kai Pastor
+ *    Copyright 2012-2020 Kai Pastor
  *
  *    This file is part of OpenOrienteering.
  *
@@ -518,12 +518,11 @@ Q_OBJECT
 	 * Tries to change the usage of georeferencing data.
 	 * 
 	 * If supported by the actual template, this function tries to switch the
-	 * state between non-georeferenced and georeferenced. It returns the final
-	 * state which may be the same as before if the change is not implemented
-	 * or fails for other reasons.
+	 * state between non-georeferenced and georeferenced. It returns false when
+	 * an error occurred, and true if the change was successful or if it was
+	 * explicitly cancelled by the user.
 	 * 
-	 * The default implementation changes nothing, and it just returns the
-	 * current state.
+	 * The default implementation returns true iff the state matches the value.
 	 */
 	virtual bool trySetTemplateGeoreferenced(bool value, QWidget* dialog_parent);