Changeset 47 in tspsg-svn for trunk/src/tspmodel.cpp

Timestamp:

Aug 2, 2009, 9:47:45 PM (15 years ago)

Author:

laleppa

Message:

+ Current file name is displayed in main application window header.

• Created a method for prompt for unsaved changes to unify it throughout the code.
• Some stylistic README changes.

File:

• trunk/src/tspmodel.cpp (modified) (6 diffs)

trunk/src/tspmodel.cpp

@@ -154 +154 @@
 }
 
-void CTSPModel::loadTask(QString fname)
+bool CTSPModel::loadTask(QString fname)
 {
 QFile f(fname);
         if (!f.open(QIODevice::ReadOnly)) {
                 QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),QString(trUtf8("Unable to open task file.\nError: %1")).arg(f.errorString()),QMessageBox::Ok).exec();
-                return;
+                return false;
         }
 QDataStream ds(&f);
@@ -166 +166 @@
         ds >> sig;
         if (loadError(ds.status()))
-                return;
+                return false;
         ds.device()->reset();
         if (sig == TSPT)
-                loadTSPT(&ds);
+                if (!loadTSPT(&ds)) {
+                        f.close();
+                        return false;
+                }
         else if ((sig >> 16) == ZKT)
-                loadZKT(&ds);
-        else
+                if (!loadZKT(&ds)) {
+                        f.close();
+                        return false;
+                }
+        else {
                 QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("Unknown file format or file is corrupted."),QMessageBox::Ok).exec();
+                f.close();
+                return false;
+        }
         f.close();
-}
-
-void CTSPModel::loadTSPT(QDataStream *ds)
+        return true;
+}
+
+bool CTSPModel::loadTSPT(QDataStream *ds)
 {
         // Skipping signature
         ds->skipRawData(sizeof(TSPT));
         if (loadError(ds->status()))
-                return;
+                return false;
         // File version
 quint8 version;
         *ds >> version;
         if (loadError(ds->status()))
-                return;
+                return false;
         if (version > TSPT_VERSION) {
                 QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("File version is newer than application supports.\nPlease, try to update application."),QMessageBox::Ok).exec();
-                return;
+                return false;
         }
         // Skipping metadata
         ds->skipRawData(TSPT_META_SIZE);
         if (loadError(ds->status()))
-                return;
+                return false;
         // Cities number
 quint16 size;
         *ds >> size;
         if (loadError(ds->status()))
-                return;
+                return false;
         if (size < 3) {
                 QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("Unexpected data read.\nFile is possibly corrupted."),QMessageBox::Ok).exec();
-                return;
+                return false;
         }
         if (nCities != size)
@@ -214 +224 @@
                                 if (loadError(ds->status())) {
                                         clear();
-                                        return;
+                                        return false;
                                 }
                         }
         emit dataChanged(index(0,0),index(nCities - 1,nCities - 1));
-}
-
-void CTSPModel::loadZKT(QDataStream *ds)
+        return true;
+}
+
+bool CTSPModel::loadZKT(QDataStream *ds)
 {
         // Skipping signature
         ds->skipRawData(sizeof(ZKT));
         if (loadError(ds->status()))
-                return;
+                return false;
         // File version
 quint16 version;
         ds->readRawData(reinterpret_cast<char *>(&version),2);
         if (loadError(ds->status()))
-                return;
+                return false;
         if (version > ZKT_VERSION) {
                 QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("File version is newer than application supports.\nPlease, try to update application."),QMessageBox::Ok).exec();
-                return;
+                return false;
         }
         // Cities number
@@ -239 +250 @@
         ds->readRawData(reinterpret_cast<char *>(&size),1);
         if (loadError(ds->status()))
-                return;
+                return false;
         if ((size < 3) || (size > 5)) {
                 QMessageBox(QMessageBox::Critical,trUtf8("Task Load"),trUtf8("Unable to load task:") + "\n" + trUtf8("Unexpected data read.\nFile is possibly corrupted."),QMessageBox::Ok).exec();
-                return;
+                return false;
         }
         if (nCities != size)
@@ -254 +265 @@
                                 if (loadError(ds->status())) {
                                         clear();
-                                        return;
+                                        return false;
                                 }
                                 table[r][c] = val;
@@ -261 +272 @@
                                 if (loadError(ds->status())) {
                                         clear();
-                                        return;
+                                        return false;
                                 }
                         }
         emit dataChanged(index(0,0),index(nCities - 1,nCities - 1));
+        return true;
 }