Document autosave facility

src/board/UBBoardController.cpp

@@ -108,6 +108,7 @@ UBBoardController::UBBoardController(UBMainWindow* mainWindow)
     , mMovingSceneIndex(-1)
     , mActionGroupText(tr("Group"))
     , mActionUngroupText(tr("Ungroup"))
+    , mAutosaveTimer(0)
 {
     mZoomFactor = UBSettings::settings()->boardZoomFactor->get().toDouble();
 
@@ -395,6 +396,21 @@ void UBBoardController::stopScript()
     freezeW3CWidgets(true);
 }
 
+void UBBoardController::saveData(SaveFlags fls)
+{
+    bool verbose = fls | sf_showProgress;
+
+    if (verbose) {
+        UBApplication::showMessage("Saving document...");
+    }
+    if (mActiveScene && mActiveScene->isModified()) {
+        persistCurrentScene();
+    }
+    if (verbose) {
+        UBApplication::showMessage("Document has just been saved...");
+    }
+}
+
 void UBBoardController::initToolbarTexts()
 {
     QList<QAction*> allToolbarActions;
@@ -1647,6 +1663,14 @@ void UBBoardController::adjustDisplayViews()
 }
 
 
+int UBBoardController::autosaveTimeoutFromSettings()
+{
+    int value = UBSettings::settings()->timerInterval->get().toInt();
+    int minute = 60 * 1000;
+
+    return value * minute;
+}
+
 void UBBoardController::changeBackground(bool isDark, bool isCrossed)
 {
     bool currentIsDark = mActiveScene->isDarkBackground();
@@ -1768,6 +1792,36 @@ void UBBoardController::documentSceneChanged(UBDocumentProxy* pDocumentProxy, in
     }
 }
 
+void UBBoardController::autosaveTimeout()
+{
+    if (UBApplication::applicationController->displayMode() != UBApplicationController::Board) {
+        //perform autosave only in board mode
+        return;
+    }
+
+    saveData(sf_showProgress);
+}
+
+void UBBoardController::appMainModeChanged(UBApplicationController::MainMode md)
+{
+//    int timerInterval = autosaveTimeoutFromSettings();
+    int timerInterval = 50000;
+    if (!timerInterval) {
+        return;
+    }
+
+    if (!mAutosaveTimer) {
+        mAutosaveTimer = new QTimer(this);
+        connect(mAutosaveTimer, SIGNAL(timeout()), this, SLOT(autosaveTimeout()));
+    }
+
+    if (md == UBApplicationController::Board) {
+        mAutosaveTimer->start(timerInterval);
+    } else if (mAutosaveTimer->isActive()) {
+        mAutosaveTimer->stop();
+    }
+}
+
 void UBBoardController::closing()
 {
     mIsClosing = true;

src/board/UBBoardController.h

@@ -32,6 +32,7 @@
 
 #include <QObject>
 #include "document/UBDocumentContainer.h"
+#include "core/UBApplicationController.h"
 
 class UBMainWindow;
 class UBApplication;
@@ -59,6 +60,13 @@ class UBBoardController : public UBDocumentContainer
 {
     Q_OBJECT
 
+    public:
+        enum SaveFlag {
+            sf_none = 0x0,
+            sf_showProgress = 0x1
+        };
+    Q_DECLARE_FLAGS(SaveFlags, SaveFlag)
+
     public:
         UBBoardController(UBMainWindow *mainWindow);
         virtual ~UBBoardController();
@@ -240,6 +248,8 @@ class UBBoardController : public UBDocumentContainer
         void startScript();
         void stopScript();
 
+        void saveData(SaveFlags fls = sf_none);
+
     signals:
         void newPageAdded();
         void activeSceneChanged();
@@ -267,10 +277,15 @@ class UBBoardController : public UBDocumentContainer
         void undoRedoStateChange(bool canUndo);
         void documentSceneChanged(UBDocumentProxy* proxy, int pIndex);
 
+    private slots:
+        void autosaveTimeout();
+        void appMainModeChanged(UBApplicationController::MainMode);
+
     private:
         void updatePageSizeState();
         void saveViewState();
         void adjustDisplayViews();
+        int autosaveTimeoutFromSettings();
 
         UBMainWindow *mMainWindow;
         UBGraphicsScene* mActiveScene;
@@ -298,6 +313,8 @@ class UBBoardController : public UBDocumentContainer
         QString mActionGroupText;
         QString mActionUngroupText;
 
+        QTimer *mAutosaveTimer;
+
     private slots:
         void stylusToolDoubleClicked(int tool);
         void boardViewResized(QResizeEvent* event);

src/core/UBApplication.cpp

@@ -339,7 +339,8 @@ int UBApplication::exec(const QString& pFileToImport)
     connect(applicationController, SIGNAL(desktopMode(bool)),
             boardController->paletteManager(), SLOT(slot_changeDesktopMode(bool)));
 
-
+    connect(applicationController, SIGNAL(mainModeChanged(UBApplicationController::MainMode))
+          , boardController,       SLOT(appMainModeChanged(UBApplicationController::MainMode)));
 
     connect(mainWindow->actionDesktop, SIGNAL(triggered(bool)), applicationController, SLOT(showDesktop(bool)));
     connect(mainWindow->actionDesktop, SIGNAL(triggered(bool)), this, SLOT(stopScript()));

src/core/UBDownloadThread.cpp

@@ -22,9 +22,6 @@
  * along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
  */
 
-
-
-
 #include <QDebug>
 #include <QNetworkProxy>
 #include <QNetworkDiskCache>

src/core/UBSettings.cpp

@@ -352,6 +352,7 @@ void UBSettings::init()
 
     boardShowToolsPalette = new UBSetting(this, "Board", "ShowToolsPalette", "false");
     magnifierDrawingMode = new UBSetting(this, "Board", "MagnifierDrawingMode", "0");
+    timerInterval = new UBSetting(this, "Board", "Timer interval", "5");
 
     svgViewBoxMargin = new UBSetting(this, "SVG", "ViewBoxMargin", "50");
 

src/core/UBSettings.h

@@ -373,6 +373,8 @@ class UBSettings : public QObject
         UBSetting* libIconSize;
 
         UBSetting* magnifierDrawingMode;
+        UBSetting* timerInterval;
+
     public slots:
 
         void setPenWidthIndex(int index);