keep track of active cells in PagedWorldspaceWidget and update SubView title accordingly

apps/opencs/view/render/pagedworldspacewidget.cpp

@@ -1,6 +1,39 @@
 
 #include "pagedworldspacewidget.hpp"
 
+#include <sstream>
+
 CSVRender::PagedWorldspaceWidget::PagedWorldspaceWidget (QWidget *parent)
-: WorldspaceWidget (parent)
+: WorldspaceWidget (parent), mMin (std::make_pair (0, 0)), mMax (std::make_pair (-1, -1))
-{}
+{}
+
+void CSVRender::PagedWorldspaceWidget::useViewHint (const std::string& hint)
+{
+    if (!hint.empty())
+    {
+        if (hint[0]=='c')
+        {
+            char ignore1, ignore2, ignore3;
+            std::pair<int, int> cellIndex;
+
+            std::istringstream stream (hint.c_str());
+            if (stream >> ignore1 >> ignore2 >> ignore3 >> cellIndex.first >> cellIndex.second)
+            {
+                setCellIndex (cellIndex, cellIndex);
+
+                /// \todo adjust camera position
+            }
+        }
+
+        /// \todo implement 'r' type hints
+    }
+}
+
+void CSVRender::PagedWorldspaceWidget::setCellIndex (const std::pair<int, int>& min,
+    const std::pair<int, int>& max)
+{
+    mMin = min;
+    mMax = max;
+
+    emit cellIndexChanged (mMin, mMax);
+}

apps/opencs/view/render/pagedworldspacewidget.hpp

@@ -9,9 +9,23 @@ namespace CSVRender
     {
             Q_OBJECT
 
+            std::pair<int, int> mMin;
+            std::pair<int, int> mMax;
+
         public:
 
             PagedWorldspaceWidget (QWidget *parent);
+            ///< \note Sets the cell area selection to an invalid value to indicate that currently
+            /// no cells are displayed. The cells to be displayed will be specified later through
+            /// hint system.
+
+            virtual void useViewHint (const std::string& hint);
+
+            void setCellIndex (const std::pair<int, int>& min, const std::pair<int, int>& max);
+
+        signals:
+
+            void cellIndexChanged (const std::pair<int, int>& min, const std::pair<int, int>& max);
     };
 }
 

apps/opencs/view/render/worldspacewidget.cpp

@@ -26,6 +26,8 @@ void CSVRender::WorldspaceWidget::selectNavigationMode (const std::string& mode)
         setNavigation (&mOrbit);
 }
 
+void CSVRender::WorldspaceWidget::useViewHint (const std::string& hint) {}
+
 void CSVRender::WorldspaceWidget::selectDefaultNavigationMode()
 {
     setNavigation (&m1st);

apps/opencs/view/render/worldspacewidget.hpp

@@ -33,6 +33,9 @@ namespace CSVRender
 
             void selectDefaultNavigationMode();
 
+            virtual void useViewHint (const std::string& hint);
+            ///< Default-implementation: ignored.
+
         private slots:
 
             void selectNavigationMode (const std::string& mode);

apps/opencs/view/world/scenesubview.cpp

@@ -1,6 +1,8 @@
 
 #include "scenesubview.hpp"
 
+#include <sstream>
+
 #include <QVBoxLayout>
 #include <QHBoxLayout>
 #include <QLabel>
@@ -35,7 +37,14 @@ CSVWorld::SceneSubView::SceneSubView (const CSMWorld::UniversalId& id, CSMDoc::D
     SceneToolbar *toolbar = new SceneToolbar (48, this);
 
     if (id.getId()=="sys::default")
-        mScene = new CSVRender::PagedWorldspaceWidget (this);
+    {
+        CSVRender::PagedWorldspaceWidget *widget = new CSVRender::PagedWorldspaceWidget (this);
+        mScene = widget;
+        connect (widget,
+            SIGNAL (cellIndexChanged (const std::pair<int, int>&, const std::pair<int, int>&)),
+            this,
+            SLOT (cellIndexChanged (const std::pair<int, int>&, const std::pair<int, int>&)));
+    }
     else
         mScene = new CSVRender::UnpagedWorldspaceWidget (id.getId(), document, this);
 
@@ -83,7 +92,26 @@ void CSVWorld::SceneSubView::setStatusBar (bool show)
     mBottom->setStatusBar (show);
 }
 
+void CSVWorld::SceneSubView::useHint (const std::string& hint)
+{
+    mScene->useViewHint (hint);
+}
+
 void CSVWorld::SceneSubView::closeRequest()
 {
     deleteLater();
+}
+
+void CSVWorld::SceneSubView::cellIndexChanged (const std::pair<int, int>& min,
+    const std::pair<int, int>& max)
+{
+    std::ostringstream stream;
+    stream << "Scene: " << getUniversalId().getId() << " (" << min.first << ", " << min.second;
+
+    if (min!=max)
+        stream << " to " << max.first << ", " << max.second;
+
+    stream << ")";
+
+    setWindowTitle (QString::fromUtf8 (stream.str().c_str()));
 }

apps/opencs/view/world/scenesubview.hpp

@@ -38,9 +38,13 @@ namespace CSVWorld
 
             virtual void setStatusBar (bool show);
 
+            virtual void useHint (const std::string& hint);
+
         private slots:
 
             void closeRequest();
+
+            void cellIndexChanged (const std::pair<int, int>& min, const std::pair<int, int>& max);
     };
 }