[Game] Playmats (#7101)

* [Game] Playmats

Took 19 seconds

Took 1 minute

* [Playmats] Add fixed override and configurable fallbacks to settings.

Took 29 minutes

Took 43 seconds

* Add main to test.

Took 1 minute

Took 29 seconds

* Move settings to own group

Took 11 minutes

* Some attempts to refresh macOS compositor

Took 2 minutes

* Try something else

Took 17 minutes

* Don't manipulate live list

Took 11 minutes

* Change things about resolution, address comments.

Took 45 minutes

Took 12 minutes

* Comments.

Took 14 minutes

Took 8 seconds

* Re-order settings menu location

Took 2 minutes

* Rename PlaymatResolution to Info and add enums

Took 8 minutes

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/game_graphics/zones/stack_zone.cpp

@@ -31,8 +31,22 @@ QRectF StackZone::boundingRect() const
 
 void StackZone::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*option*/, QWidget * /*widget*/)
 {
-    QBrush brush = themeManager->getExtraBgBrush(ThemeManager::Stack, getLogic()->getPlayer()->getZoneId());
-    painter->fillRect(boundingRect(), brush);
+    if (playmatActive) {
+        // Subtle overlay to distinguish stack zone from table zone (slightly darker)
+        painter->fillRect(boundingRect(), QColor(0, 0, 0, 80));
+    } else {
+        QBrush brush = themeManager->getExtraBgBrush(ThemeManager::Stack, getLogic()->getPlayer()->getZoneId());
+        painter->fillRect(boundingRect(), brush);
+    }
+}
+
+void StackZone::onPlaymatChanged(bool active)
+{
+    playmatActive = active;
+    // See TableZone::onPlaymatChanged for the rationale. Translucent overlay
+    // over a dynamic playmat should not be held in the device cache.
+    setCacheMode(active ? QGraphicsItem::NoCache : QGraphicsItem::DeviceCoordinateCache);
+    update();
 }
 
 void StackZone::handleDropEvent(const QList<CardDragItem *> &dragItems,

cockatrice/src/game_graphics/zones/stack_zone.h

@@ -15,9 +15,13 @@ class StackZone : public SelectZone
     Q_OBJECT
 private:
     qreal zoneHeight;
+    bool playmatActive = false;
 private slots:
     void updateBg();
 
+public slots:
+    void onPlaymatChanged(bool active);
+
 public:
     StackZone(StackZoneLogic *_logic, int _zoneHeight, QGraphicsItem *parent);
     /** @brief Resizes the stack zone height, e.g. when sharing vertical space with the command zone. */

cockatrice/src/game_graphics/zones/table_zone.cpp

@@ -92,14 +92,19 @@ bool TableZone::isInverted() const
 
 void TableZone::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*option*/, QWidget * /*widget*/)
 {
-    QBrush brush = themeManager->getExtraBgBrush(ThemeManager::Table, getLogic()->getPlayer()->getZoneId());
-    painter->fillRect(boundingRect(), brush);
+    if (playmatActive) {
+        // Subtle overlay to distinguish table zone from stack zone
+        painter->fillRect(boundingRect(), QColor(0, 0, 0, 60));
+    } else {
+        QBrush brush = themeManager->getExtraBgBrush(ThemeManager::Table, getLogic()->getPlayer()->getZoneId());
+        painter->fillRect(boundingRect(), brush);
+    }
 
     if (active) {
         paintZoneOutline(painter);
     } else {
         // inactive player gets a darker table zone with a semi transparent black mask
-        // this means if the user provides a custom background it will fade
+        // this means if the user provides a custom background or playmat it will fade
         painter->fillRect(boundingRect(), FADE_MASK);
     }
 
@@ -113,6 +118,17 @@ void TableZone::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*opti
     paintLandDivider(painter);
 }
 
+void TableZone::onPlaymatChanged(bool active)
+{
+    playmatActive = active;
+    // While a playmat is shown the zone paints a translucent overlay over the
+    // dynamic playmat behind it. Keep it out of the device cache so the cached
+    // pixels are never stale relative to the playmat (and to avoid compositing
+    // artifacts of cached translucent content on some platforms).
+    setCacheMode(active ? QGraphicsItem::NoCache : QGraphicsItem::DeviceCoordinateCache);
+    update();
+}
+
 /**
    Render a soft outline around the edge of the TableZone.
 

cockatrice/src/game_graphics/zones/table_zone.h

@@ -86,6 +86,7 @@ private:
      */
     bool active = false;
     bool mirrored = false;
+    bool playmatActive = false;
 
     [[nodiscard]] bool isInverted() const;
 
@@ -95,6 +96,9 @@ private slots:
      */
     void updateBg();
 
+public slots:
+    void onPlaymatChanged(bool active);
+
 public slots:
     /**
        Reorganizes CardItems in the TableZone
@@ -184,8 +188,17 @@ public:
     }
     void setWidth(qreal _width)
     {
+        // The width is stored as an int; truncate to match the previous implicit conversion.
+        const int newWidth = static_cast<int>(_width);
+        if (width == newWidth) {
+            return;
+        }
         prepareGeometryChange();
-        width = _width;
+        width = newWidth;
+        // The parent player item's boundingRect (which clips the playmat painting) is
+        // derived from this zone's size. Without this signal the playmat is cut off at
+        // the stale boundingRect edge whenever the scene is resized wider.
+        emit sizeChanged();
     }
     [[nodiscard]] qreal getWidth() const
     {