Added observer to update values displayed based on some metric.

* Modified main() function to connect signals/slots to display
  calculated values
* Color scales are no longer shared; they are also normalized to
  each component's own data
* Stub mouse handling in BarChart (changes cursor shape)

1 files changed, 30 insertions, 0 deletions

diff --git a/projectionobserver.h b/projectionobserver.h
new file mode 100644
index 0000000..5ac6988
--- /dev/null
+++ b/projectionobserver.h
@@ -0,0 +1,30 @@
+#ifndef PROJECTIONOBSERVER_H
+#define PROJECTIONOBSERVER_H
+
+#include <QObject>
+#include <armadillo>
+
+#include "distortionmeasure.h"
+
+class ProjectionObserver : public QObject
+{
+    Q_OBJECT
+public:
+    ProjectionObserver(const arma::mat &X, const arma::uvec &cpIndices);
+
+signals:
+    void mapChanged(const arma::vec &values) const;
+
+public slots:
+    void setMap(const arma::mat &Y);
+
+private:
+    arma::mat m_X, m_Y, m_origY, m_prevY;
+    arma::mat m_distX, m_distY, m_distOrigY, m_distPrevY;
+    arma::uvec m_cpIndices;
+
+    // TODO: one per implemented measure
+    arma::vec m_values;
+};
+
+#endif // PROJECTIONOBSERVER_H