Lazy loading of card database view => faster startup times

cockatrice/src/carddatabase.cpp

@@ -157,8 +157,7 @@ void SetList::guessSortKeys()
     }
 }
 
-CardInfo::CardInfo(CardDatabase *_db,
-                   const QString &_name,
+CardInfo::CardInfo(const QString &_name,
                    bool _isToken,
                    const QString &_manacost,
                    const QString &_cmc,
@@ -176,8 +175,7 @@ CardInfo::CardInfo(CardDatabase *_db,
                    const QStringMap &_customPicURLs,
                    MuidMap _muIds
                    )
-    : db(_db),
-      name(_name),
+    : name(_name),
       isToken(_isToken),
       sets(_sets),
       manacost(_manacost),
@@ -188,6 +186,7 @@ CardInfo::CardInfo(CardDatabase *_db,
       colors(_colors),
       relatedCards(_relatedCards),
       reverseRelatedCards(_reverseRelatedCards),
+      setsNames(),
       upsideDownArt(_upsideDownArt),
       loyalty(_loyalty),
       customPicURLs(_customPicURLs),
@@ -200,6 +199,8 @@ CardInfo::CardInfo(CardDatabase *_db,
 
     for (int i = 0; i < sets.size(); i++)
         sets[i]->append(this);
+
+    refreshCachedSetNames();
 }
 
 CardInfo::~CardInfo()
@@ -249,6 +250,21 @@ void CardInfo::addToSet(CardSet *set)
 {
     set->append(this);
     sets << set;
+
+    refreshCachedSetNames();
+}
+
+void CardInfo::refreshCachedSetNames()
+{
+    // update the cached list of set names
+    QStringList setList;
+    for (int i = 0; i < sets.size(); i++)
+    {
+        if(sets[i]->getEnabled())
+            setList << sets[i]->getShortName();
+    }
+    setsNames = setList.join(", ");
+
 }
 
 QString CardInfo::simplifyName(const QString &name) {
@@ -330,10 +346,7 @@ CardDatabase::CardDatabase(QObject *parent)
     connect(settingsCache, SIGNAL(cardDatabasePathChanged()), this, SLOT(loadCardDatabase()));
     connect(settingsCache, SIGNAL(tokenDatabasePathChanged()), this, SLOT(loadTokenDatabase()));
 
-    loadCardDatabase();
-    loadTokenDatabase();
-
-    noCard = new CardInfo(this);
+    noCard = new CardInfo();
 }
 
 CardDatabase::~CardDatabase()
@@ -506,7 +519,7 @@ void CardDatabase::loadCardsFromXml(QXmlStreamReader &xml, bool tokens)
             }
 
             if (isToken == tokens) {
-                addCard(new CardInfo(this, name, isToken, manacost, cmc, type, pt, text, colors, relatedCards, reverseRelatedCards, upsideDown, loyalty, cipt, tableRow, sets, customPicURLs, muids));
+                addCard(new CardInfo(name, isToken, manacost, cmc, type, pt, text, colors, relatedCards, reverseRelatedCards, upsideDown, loyalty, cipt, tableRow, sets, customPicURLs, muids));
             }
         }
     }
@@ -517,7 +530,7 @@ CardInfo *CardDatabase::getCardFromMap(CardNameMap &cardMap, const QString &card
         return cardMap.value(cardName);
     
     if (createIfNotFound) {
-        CardInfo *newCard = new CardInfo(this, cardName, true);
+        CardInfo *newCard = new CardInfo(cardName, true);
         newCard->addToSet(getSet(CardDatabase::TOKENS_SETNAME));
         cardMap.insert(cardName, newCard);
         return newCard;
@@ -619,23 +632,22 @@ LoadStatus CardDatabase::loadCardDatabase(const QString &path, bool tokens)
         emit cardListChanged();
     }
 
-    if (!tokens) {
+    if (!tokens)
         loadStatus = tempLoadStatus;
-        qDebug() << "loadCardDatabase(): Path = " << path << " Status = " << loadStatus;
-    }
 
+    qDebug() << "loadCardDatabase(): Path =" << path << "Tokens =" << tokens << "Status =" << loadStatus;
 
     return tempLoadStatus;
 }
 
-void CardDatabase::loadCardDatabase()
+LoadStatus CardDatabase::loadCardDatabase()
 {
-    loadCardDatabase(settingsCache->getCardDatabasePath(), false);
+    return loadCardDatabase(settingsCache->getCardDatabasePath(), false);
 }
 
-void CardDatabase::loadTokenDatabase()
+LoadStatus CardDatabase::loadTokenDatabase()
 {
-    loadCardDatabase(settingsCache->getTokenDatabasePath(), true);
+    return loadCardDatabase(settingsCache->getTokenDatabasePath(), true);
 }
 
 void CardDatabase::loadCustomCardDatabases(const QString &path)

cockatrice/src/carddatabase.h

@@ -60,8 +60,6 @@ public:
 class CardInfo : public QObject {
     Q_OBJECT
 private:
-    CardDatabase *db;
-
     QString name;
 
     /*
@@ -84,6 +82,7 @@ private:
     QStringList reverseRelatedCards;
     // the cards thare are reverse-related to me
     QStringList reverseRelatedCardsToMe;
+    QString setsNames;
     bool upsideDownArt;
     int loyalty;
     QStringMap customPicURLs;
@@ -92,9 +91,9 @@ private:
     int tableRow;
     QString pixmapCacheKey;
 
+    void refreshCachedSetNames();
 public:
-    CardInfo(CardDatabase *_db,
-        const QString &_name = QString(),
+    CardInfo(const QString &_name = QString(),
         bool _isToken = false,
         const QString &_manacost = QString(),
         const QString &_cmc = QString(),
@@ -113,14 +112,15 @@ public:
         MuidMap muids = MuidMap()
         );
     ~CardInfo();
-    const QString &getName() const { return name; }
+    inline const QString &getName() const { return name; }
+    inline const QString &getSetsNames() const { return setsNames; }
     const QString &getSimpleName() const { return simpleName; }
     bool getIsToken() const { return isToken; }
     const SetList &getSets() const { return sets; }
-    const QString &getManaCost() const { return manacost; }
-    const QString &getCmc() const { return cmc; }
-    const QString &getCardType() const { return cardtype; }
-    const QString &getPowTough() const { return powtough; }
+    inline const QString &getManaCost() const { return manacost; }
+    inline const QString &getCmc() const { return cmc; }
+    inline const QString &getCardType() const { return cardtype; }
+    inline const QString &getPowTough() const { return powtough; }
     const QString &getText() const { return text; }
     const QString &getPixmapCacheKey() const { return pixmapCacheKey; }
     const int &getLoyalty() const { return loyalty; }
@@ -229,12 +229,12 @@ public:
     bool hasDetectedFirstRun();
     void refreshCachedReverseRelatedCards();
 public slots:
-    LoadStatus loadCardDatabase(const QString &path, bool tokens = false);
+    LoadStatus loadCardDatabase();
+    LoadStatus loadTokenDatabase();
     void loadCustomCardDatabases(const QString &path);
     void emitCardListChanged();
 private slots:
-    void loadCardDatabase();
-    void loadTokenDatabase();
+    LoadStatus loadCardDatabase(const QString &path, bool tokens = false);
 signals:
     void cardListChanged();
     void cardAdded(CardInfo *card);

cockatrice/src/carddatabasemodel.cpp

@@ -28,26 +28,16 @@ int CardDatabaseModel::columnCount(const QModelIndex &/*parent*/) const
 
 QVariant CardDatabaseModel::data(const QModelIndex &index, int role) const
 {
-    if (!index.isValid())
-        return QVariant();
-    if ((index.row() >= cardList.size()) || (index.column() >= CARDDBMODEL_COLUMNS))
-        return QVariant();
-    if (role != Qt::DisplayRole && role != SortRole)
+    if (!index.isValid() ||
+        index.row() >= cardList.size() || 
+        index.column() >= CARDDBMODEL_COLUMNS || 
+        (role != Qt::DisplayRole && role != SortRole))
         return QVariant();
 
     CardInfo *card = cardList.at(index.row());
     switch (index.column()){
         case NameColumn: return card->getName();
-        case SetListColumn: {
-            QStringList setList;
-            const QList<CardSet *> &sets = card->getSets();
-            for (int i = 0; i < sets.size(); i++)
-            {
-                if(sets[i]->getEnabled())
-                    setList << sets[i]->getShortName();
-            }
-            return setList.join(", ");
-        }
+        case SetListColumn: return card->getSetsNames();
         case ManaCostColumn: return role == SortRole ?
             QString("%1%2").arg(card->getCmc(), 4, QChar('0')).arg(card->getManaCost()) :
             card->getManaCost();
@@ -139,8 +129,30 @@ CardDatabaseDisplayModel::CardDatabaseDisplayModel(QObject *parent)
     filterTree = NULL;
     setFilterCaseSensitivity(Qt::CaseInsensitive);
     setSortCaseSensitivity(Qt::CaseInsensitive);
+
+    loadedRowCount = 0;
+}
+
+bool CardDatabaseDisplayModel::canFetchMore(const QModelIndex & index) const
+{
+    return loadedRowCount < sourceModel()->rowCount(index);
 }
 
+void CardDatabaseDisplayModel::fetchMore(const QModelIndex & index)
+{
+    int remainder = sourceModel()->rowCount(index) - loadedRowCount;
+    int itemsToFetch = qMin(100, remainder);
+
+    beginInsertRows(QModelIndex(), loadedRowCount, loadedRowCount+itemsToFetch-1);
+
+    loadedRowCount += itemsToFetch;
+    endInsertRows();
+}
+
+int CardDatabaseDisplayModel::rowCount(const QModelIndex &parent) const
+{
+    return qMin(QSortFilterProxyModel::rowCount(parent), loadedRowCount);
+}
 
 bool CardDatabaseDisplayModel::lessThan(const QModelIndex &left, const QModelIndex &right) const {
 

cockatrice/src/carddatabasemodel.h

@@ -42,6 +42,7 @@ private:
     QString searchTerm;
     QSet<QString> cardNameSet, cardTypes, cardColors;
     FilterTree *filterTree;
+    int loadedRowCount;
 public:
     CardDatabaseDisplayModel(QObject *parent = 0);
     void setFilterTree(FilterTree *filterTree);
@@ -54,9 +55,13 @@ public:
     void setCardTypes(const QSet<QString> &_cardTypes) { cardTypes = _cardTypes; invalidate(); }
     void setCardColors(const QSet<QString> &_cardColors) { cardColors = _cardColors; invalidate(); }
     void clearFilterAll();
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
 protected:
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const;
     bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const;
+
+    bool canFetchMore(const QModelIndex &parent) const;
+    void fetchMore(const QModelIndex &parent);
 private slots:
     void filterTreeChanged();
 };

cockatrice/src/dlg_edit_tokens.cpp

@@ -145,7 +145,7 @@ void DlgEditTokens::actAddToken()
     if (name.isEmpty())
         return;
     
-    CardInfo *card = new CardInfo(cardDatabaseModel->getDatabase(), name, true);
+    CardInfo *card = new CardInfo(name, true);
     card->addToSet(cardDatabaseModel->getDatabase()->getSet(CardDatabase::TOKENS_SETNAME));
     card->setCardType("Token");
     cardDatabaseModel->getDatabase()->addCard(card);

cockatrice/src/main.cpp

@@ -163,12 +163,15 @@ int main(int argc, char *argv[])
 #else
     const QString dataDir = QStandardPaths::standardLocations(QStandardPaths::DataLocation).first();
 #endif
-    
-    if (!db->getLoadSuccess())
-        if (!db->loadCardDatabase(dataDir + "/cards.xml"))
-            settingsCache->setCardDatabasePath(dataDir + "/cards.xml");
-    if (settingsCache->getTokenDatabasePath().isEmpty())
+
+    if (settingsCache->getCardDatabasePath().isEmpty() ||
+        db->loadCardDatabase() != Ok)
+        settingsCache->setCardDatabasePath(dataDir + "/cards.xml");
+
+    if (settingsCache->getTokenDatabasePath().isEmpty() ||
+        db->loadTokenDatabase() != Ok)
         settingsCache->setTokenDatabasePath(dataDir + "/tokens.xml");
+
     if (!QDir(settingsCache->getDeckPath()).exists() || settingsCache->getDeckPath().isEmpty()) {
         QDir().mkpath(dataDir + "/decks");
         settingsCache->setDeckPath(dataDir + "/decks");

cockatrice/src/tab_deck_editor.cpp

@@ -367,17 +367,16 @@ void TabDeckEditor::createCentralFrame()
     databaseDisplayModel = new CardDatabaseDisplayModel(this);
     databaseDisplayModel->setSourceModel(databaseModel);
     databaseDisplayModel->setFilterKeyColumn(0);
-    databaseDisplayModel->sort(0, Qt::AscendingOrder);
 
     databaseView = new QTreeView();
     databaseView->setObjectName("databaseView");
     databaseView->setFocusProxy(searchEdit);
-    databaseView->setModel(databaseDisplayModel);
     databaseView->setUniformRowHeights(true);
     databaseView->setRootIsDecorated(false);
     databaseView->setAlternatingRowColors(true);
     databaseView->setSortingEnabled(true);
     databaseView->sortByColumn(0, Qt::AscendingOrder);
+    databaseView->setModel(databaseDisplayModel);
     databaseView->resizeColumnToContents(0);
     connect(databaseView->selectionModel(), SIGNAL(currentRowChanged(const QModelIndex &, const QModelIndex &)), this, SLOT(updateCardInfoLeft(const QModelIndex &, const QModelIndex &)));
     connect(databaseView, SIGNAL(doubleClicked(const QModelIndex &)), this, SLOT(actAddCard()));

oracle/src/oracleimporter.cpp

@@ -96,7 +96,7 @@ CardInfo *OracleImporter::addCard(const QString &setName,
         bool cipt = cardText.contains("Hideaway") || (cardText.contains(cardName + " enters the battlefield tapped") && !cardText.contains(cardName + " enters the battlefield tapped unless"));
         
         // insert the card and its properties
-        card = new CardInfo(this, cardName, isToken, cardCost, cmc, cardType, cardPT, cardText, colors, relatedCards, reverseRelatedCards, upsideDown, cardLoyalty, cipt);
+        card = new CardInfo(cardName, isToken, cardCost, cmc, cardType, cardPT, cardText, colors, relatedCards, reverseRelatedCards, upsideDown, cardLoyalty, cipt);
         int tableRow = 1;
         QString mainCardType = card->getMainCardType();
         if ((mainCardType == "Land") || mArtifact)