Improve PlayingCard class

- Move to using enums to represent the suit & value
- This changes the badly named color to more appropriate suit.
- Add createDeck static method

CardModel.qml

@@ -18,7 +18,7 @@ Item {
         anchors.fill: parent
         source: cardModel.card.isFaceDown
             ? "qrc:/img/playing_cards/backs/" + cardModel.backStyle + ".svg"
-            : "qrc:/img/playing_cards/fronts/" + cardModel.card.color + "_" + cardModel.card.value + ".svg"
+            : "qrc:/img/playing_cards/fronts/" + cardModel.card.suitString + "_" + cardModel.card.valueString + ".svg"
         fillMode: Image.PreserveAspectFit
     }
 }

main.cpp

@@ -17,7 +17,7 @@ int main(int argc, char *argv[])
 
     qmlRegisterUncreatableType<PlayingCard>("Solitare", 1, 0, "PlayingCard", "PlayingCard cannot be directly created in QML. Use C++ logic to instantiate.");
 
-    PlayingCard myCard("clubs", "ace");
+    PlayingCard myCard(PlayingCard::Suit::Hearts, PlayingCard::Value::Seven);
     engine.rootContext()->setContextProperty("myCard", &myCard);
 
     engine.loadFromModule("Solitare", "Main");

playingcard.cpp

@@ -1,29 +1,60 @@
 #include "playingcard.h"
 
-PlayingCard::PlayingCard(const QString &color, const QString &value, bool isFaceDown, QObject *parent)
-     : QObject{parent}, m_color{color}, m_value{value}, m_isFaceDown{isFaceDown}
+PlayingCard::PlayingCard(const PlayingCard::Suit &suit, const PlayingCard::Value &value, bool isFaceDown, QObject *parent)
+     : QObject{parent}, m_suit{suit}, m_value{value}, m_isFaceDown{isFaceDown}
 { }
 
-QString PlayingCard::color() const
+PlayingCard::Suit PlayingCard::suit() const
 {
-    return m_color;
+    return m_suit;
 }
 
-void PlayingCard::setColor(const QString &color)
+QString PlayingCard::suitString() const
 {
-    if (m_color == color)
+    switch (m_suit) {
+        case Clubs: return "clubs";
+        case Diamonds: return "diamonds";
+        case Hearts: return "hearts";
+        case Spades: return "spades";
+        default: throw std::invalid_argument("Invalid Suit enum value");
+    }
+}
+
+void PlayingCard::setSuit(const PlayingCard::Suit &suit)
+{
+    if (m_suit == suit)
         return;
 
-    m_color = color;
-    emit onColorChanged();
+    m_suit = suit;
+    emit onSuitChanged();
 }
 
-QString PlayingCard::value() const
+PlayingCard::Value PlayingCard::value() const
 {
     return m_value;
 }
 
-void PlayingCard::setValue(const QString &value)
+QString PlayingCard::valueString() const
+{
+    switch (m_value) {
+        case Ace: return "ace";
+        case Two: return "2";
+        case Three: return "3";
+        case Four: return "4";
+        case Five: return "5";
+        case Six: return "6";
+        case Seven: return "7";
+        case Eight: return "8";
+        case Nine: return "9";
+        case Ten: return "10";
+        case Jack: return "jack";
+        case Queen: return "queen";
+        case King: return "king";
+        default: throw std::invalid_argument("Invalid Value enum value");
+    }
+}
+
+void PlayingCard::setValue(const PlayingCard::Value &value)
 {
     if (m_value == value)
         return;
@@ -45,3 +76,20 @@ void PlayingCard::setIsFaceDown(bool faceDown)
     m_isFaceDown = faceDown;
     emit onIsFaceDownChanged();
 }
+
+QList<PlayingCard *> PlayingCard::createDeck()
+{
+    QList<PlayingCard*> deck;
+
+    for (int suitIndex = PlayingCard::Suit::Clubs; suitIndex <= PlayingCard::Suit::Spades; ++suitIndex) {
+        for (int valueIndex = PlayingCard::Value::Ace; valueIndex <= PlayingCard::Value::King; ++valueIndex) {
+            PlayingCard *card = new PlayingCard();
+            card->setSuit(static_cast<PlayingCard::Suit>(suitIndex));
+            card->setValue(static_cast<PlayingCard::Value>(valueIndex));
+            card->setIsFaceDown(true);  // All cards are face down initially
+            deck.append(card);
+        }
+    }
+
+    return deck;
+}

playingcard.h

@@ -6,30 +6,64 @@
 class PlayingCard : public QObject
 {
     Q_OBJECT
-    Q_PROPERTY(QString color READ color WRITE setColor NOTIFY onColorChanged REQUIRED)
-    Q_PROPERTY(QString value READ value WRITE setValue NOTIFY onValueChanged REQUIRED)
+
+    Q_ENUMS(Value)
+    Q_ENUMS(Suit)
+
+    Q_PROPERTY(Suit suit READ suit WRITE setSuit NOTIFY onSuitChanged REQUIRED)
+    Q_PROPERTY(Value value READ value WRITE setValue NOTIFY onValueChanged REQUIRED)
     Q_PROPERTY(bool isFaceDown READ isFaceDown WRITE setIsFaceDown NOTIFY onIsFaceDownChanged)
 
+    Q_PROPERTY(QString valueString READ valueString NOTIFY onValueChanged)
+    Q_PROPERTY(QString suitString READ suitString NOTIFY onSuitChanged)
+
 public:
-    explicit PlayingCard(const QString &color = "", const QString &value = "", bool isFaceDown = false, QObject *parent = nullptr);
+    enum Value {
+        Ace = 1,
+        Two = 2,
+        Three = 3,
+        Four = 4,
+        Five = 5,
+        Six = 6,
+        Seven = 7,
+        Eight = 8,
+        Nine = 9,
+        Ten = 10,
+        Jack = 11,
+        Queen = 12,
+        King = 13,
+    };
 
-    QString color() const;
-    void setColor(const QString &color);
+    enum Suit {
+        Clubs,
+        Diamonds,
+        Hearts,
+        Spades,
+    };
 
-    QString value() const;
-    void setValue(const QString &value);
+    explicit PlayingCard(const Suit &suit = Suit::Clubs, const Value &value = Value::Ace, bool isFaceDown = false, QObject *parent = nullptr);
+
+    Suit suit() const;
+    QString suitString() const;
+    void setSuit(const Suit &suit);
+
+    Value value() const;
+    QString valueString() const;
+    void setValue(const Value &value);
 
     bool isFaceDown() const;
     void setIsFaceDown(bool faceDown);
 
+    static QList<PlayingCard*> createDeck();
+
 signals:
-    void onColorChanged();
+    void onSuitChanged();
     void onValueChanged();
     void onIsFaceDownChanged();
 
 private:
-    QString m_color;
-    QString m_value;
+    Suit m_suit;
+    Value m_value;
     bool m_isFaceDown;
     QString m_imgUrl;
 };