UI: highlight pinned printings in Printing Selector (#6252)

* UI: highlight pinned printings in Printing Selector

Fixes #5930.

Signed-off-by: Gauwal <gauwain2611@hotmail.com>

* Fix: adjust pin highlighting behavior + making it sharp/not blurry

* Using qceil

* Isolating pin badge init to it's own method + adding comments

* Cleaning up unnecessary #includes

---------

Signed-off-by: Gauwal <gauwain2611@hotmail.com>

cockatrice/src/interface/widgets/printing_selector/printing_selector_card_overlay_widget.cpp

@@ -3,9 +3,12 @@
 #include "../../../client/settings/cache_settings.h"
 #include "printing_selector_card_display_widget.h"
 
+#include <QImageReader>
+#include <QLabel>
 #include <QMenu>
 #include <QMouseEvent>
 #include <QVBoxLayout>
+#include <QtMath>
 #include <libcockatrice/card/database/card_database_manager.h>
 #include <libcockatrice/card/relation/card_relation.h>
 #include <utility>
@@ -46,6 +49,15 @@ PrintingSelectorCardOverlayWidget::PrintingSelectorCardOverlayWidget(QWidget *pa
     cardInfoPicture->setCard(_rootCard);
     mainLayout->addWidget(cardInfoPicture);
 
+    initializePinBadge();
+
+    // Update when this overlay emits cardPreferenceChanged or when size/scale changes
+    connect(this, &PrintingSelectorCardOverlayWidget::cardPreferenceChanged, this,
+            &PrintingSelectorCardOverlayWidget::updatePinBadgeVisibility);
+    connect(cardSizeSlider, &QSlider::valueChanged, this, &PrintingSelectorCardOverlayWidget::updatePinBadgeVisibility);
+    // initial state
+    updatePinBadgeVisibility();
+
     // Add AllZonesCardAmountWidget
     allZonesCardAmountWidget =
         new AllZonesCardAmountWidget(this, deckEditor, deckModel, deckView, cardSizeSlider, _rootCard);
@@ -128,6 +140,40 @@ void PrintingSelectorCardOverlayWidget::enterEvent(QEvent *event)
     // Show the widget if amounts are 0
     allZonesCardAmountWidget->setVisible(true);
 }
+/**
+ * @brief Updates the pin badge visibility and position based on the card's pinned state.
+ *
+ * This method checks whether the current card printing is pinned and updates the
+ * pin badge accordingly. If the card is pinned, the badge is made visible and positioned in the
+ * top-right corner of the card image with appropriate margins. If the card is not pinned, the
+ * badge is hidden.
+ *
+ * The method is called whenever the card preference changes or the card size is adjusted via
+ * the slider to ensure the badge remains properly positioned.
+ */
+void PrintingSelectorCardOverlayWidget::updatePinBadgeVisibility()
+{
+    if (!pinBadge || !cardInfoPicture)
+        return;
+
+    // Query the persisted preference override to decide whether this printing is pinned.
+    const auto &preferredProviderId =
+        SettingsCache::instance().cardOverrides().getCardPreferenceOverride(rootCard.getName());
+    const auto &cardProviderId = rootCard.getPrinting().getUuid();
+    const bool isPinned = (!preferredProviderId.isEmpty() && preferredProviderId == cardProviderId);
+
+    // Toggle the badge once; the pixmap was already rasterized in initializePinBadge().
+    pinBadge->setVisible(isPinned);
+
+    if (isPinned) {
+        // Keep a small margin that scales with the card size to avoid obscuring stuff.
+        const int margin = qMax(3, int(cardInfoPicture->width() * 0.03));
+        int x = qMax(0, cardInfoPicture->width() - pinBadge->width() - margin);
+        int y = margin * 3;
+        pinBadge->move(x, y);
+        pinBadge->raise();
+    }
+}
 
 /**
  * @brief Handles the mouse leave event when the cursor leaves the overlay widget area.
@@ -204,3 +250,57 @@ void PrintingSelectorCardOverlayWidget::customMenu(QPoint point)
     }
     menu.exec(this->mapToGlobal(point));
 }
+
+/**
+ * @brief Initializes the pin badge overlay and loads its icon with DPI-aware rasterization.
+ *
+ * The icon is rasterized once using the label's device pixel ratio so it stays crisp on HiDPI
+ * displays. The resulting pixmap is cached on the QLabel and simply shown/hidden when needed.
+ * If the SVG cannot be read, a textual fallback badge is created instead.
+ */
+void PrintingSelectorCardOverlayWidget::initializePinBadge()
+{
+    if (!pinBadge) {
+        // construct the overlay label once
+        pinBadge = new QLabel(this);
+        pinBadge->setObjectName(QStringLiteral("printingSelectorPinBadge"));
+    } else {
+        // Clear any previous pixmap / style in case we reinitialize for a DPR change.
+        pinBadge->clear();
+        pinBadge->setStyleSheet(QString());
+    }
+
+    bool pinLoaded = false;
+    QImageReader pinReader(QStringLiteral("theme:icons/pin"));
+
+    if (pinReader.canRead()) {
+        // Rasterize a 64×64 logical icon so it has a consistent size regardless of card scaling.
+        const QSize targetSize(64, 64);
+        const qreal dpr = pinBadge->devicePixelRatioF();
+        const QSize rasterSize(qMax(1, qCeil(targetSize.width() * dpr)), qMax(1, qCeil(targetSize.height() * dpr)));
+        pinReader.setScaledSize(rasterSize);
+        const QImage pinImage = pinReader.read();
+        if (!pinImage.isNull()) {
+            // Tag the pixmap with the same DPR so Qt renders it at the correct physical size.
+            QPixmap pinPix = QPixmap::fromImage(pinImage);
+            pinPix.setDevicePixelRatio(dpr);
+            pinBadge->setPixmap(pinPix);
+            pinBadge->setFixedSize(targetSize);
+            pinBadge->setStyleSheet(QStringLiteral("background: transparent;"));
+            pinLoaded = true;
+        }
+    }
+
+    if (!pinLoaded) {
+        // Fall back to a text badge when the SVG cannot be decoded (e.g., missing theme resource).
+        pinBadge->setText(QStringLiteral("PIN"));
+        pinBadge->setAlignment(Qt::AlignCenter);
+        pinBadge->setFixedSize(24, 12);
+        pinBadge->setStyleSheet(QStringLiteral("background: yellow; color: black; border: 1px solid red;"));
+    }
+
+    // The overlay is mouse-transparent and hidden until we know the card is pinned.
+    pinBadge->setAttribute(Qt::WA_TransparentForMouseEvents);
+    pinBadge->setVisible(false);
+    pinBadge->raise();
+}

cockatrice/src/interface/widgets/printing_selector/printing_selector_card_overlay_widget.h

@@ -42,9 +42,14 @@ protected:
 signals:
     void cardPreferenceChanged();
 
+private slots:
+    void updatePinBadgeVisibility();
+
 private:
+    void initializePinBadge();
     CardInfoPictureWidget *cardInfoPicture;
     AllZonesCardAmountWidget *allZonesCardAmountWidget;
+    QLabel *pinBadge = nullptr;
     AbstractTabDeckEditor *deckEditor;
     DeckListModel *deckModel;
     QTreeView *deckView;