From 8e9b111ae330f5ec91652d0817f1ba71ec2f4c40 Mon Sep 17 00:00:00 2001
From: RickyRister <ricky.rister.wang@gmail.com>
Date: Thu, 26 Dec 2024 02:45:06 -0800
Subject: [PATCH] track cards in rect so far and toggle isSelected on change

---
 cockatrice/src/game/zones/select_zone.cpp | 13 ++++++++++++-
 cockatrice/src/game/zones/select_zone.h   |  1 +
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/cockatrice/src/game/zones/select_zone.cpp b/cockatrice/src/game/zones/select_zone.cpp
index 12df952f4..4cf3f349f 100644
--- a/cockatrice/src/game/zones/select_zone.cpp
+++ b/cockatrice/src/game/zones/select_zone.cpp
@@ -62,7 +62,17 @@ void SelectZone::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
             if (card->getAttachedTo() && card->getAttachedTo()->getZone() != this) {
                 continue;
             }
-            card->setSelected(selectionRect.intersects(card->mapRectToParent(card->boundingRect())));
+
+            bool inRect = selectionRect.intersects(card->mapRectToParent(card->boundingRect()));
+            if (inRect && !cardsInSelectionRect.contains(card)) {
+                // selection has just expanded to cover the card
+                cardsInSelectionRect.insert(card);
+                card->setSelected(!card->isSelected());
+            } else if (!inRect && cardsInSelectionRect.contains(card)) {
+                // selection has just shrunk to no longer cover the card
+                cardsInSelectionRect.remove(card);
+                card->setSelected(!card->isSelected());
+            }
         }
         static_cast<GameScene *>(scene())->resizeRubberBand(
             deviceTransform(static_cast<GameScene *>(scene())->getViewportTransform()).map(pos));
@@ -85,6 +95,7 @@ void SelectZone::mousePressEvent(QGraphicsSceneMouseEvent *event)
 void SelectZone::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 {
     selectionOrigin = QPoint();
+    cardsInSelectionRect.clear();
     static_cast<GameScene *>(scene())->stopRubberBand();
     event->accept();
 }
diff --git a/cockatrice/src/game/zones/select_zone.h b/cockatrice/src/game/zones/select_zone.h
index ff0c12182..4ee6d3b1b 100644
--- a/cockatrice/src/game/zones/select_zone.h
+++ b/cockatrice/src/game/zones/select_zone.h
@@ -11,6 +11,7 @@ class SelectZone : public CardZone
     Q_OBJECT
 private:
     QPointF selectionOrigin;
+    QSet<CardItem *> cardsInSelectionRect;
 
 protected:
     void mouseMoveEvent(QGraphicsSceneMouseEvent *event);