[VDS] Allow tags to toggle to a NOT state to hide non-matching decks (#5920)

* Allow excluding tags.

* Lint.

* My linter is broken, don't ask.

* Zzz.

---------

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

cockatrice/src/client/ui/widgets/visual_deck_storage/deck_preview/deck_preview_tag_display_widget.cpp

@@ -6,7 +6,7 @@
 #include <QPainter>
 
 DeckPreviewTagDisplayWidget::DeckPreviewTagDisplayWidget(QWidget *parent, const QString &_tagName)
-    : QWidget(parent), tagName(_tagName), isSelected(false)
+    : QWidget(parent), tagName(_tagName), state(TagState::NotSelected)
 {
     // Create layout
     auto *layout = new QHBoxLayout(this);
@@ -48,36 +48,58 @@ QSize DeckPreviewTagDisplayWidget::sizeHint() const
 
 void DeckPreviewTagDisplayWidget::mousePressEvent(QMouseEvent *event)
 {
-    if (event->button() == Qt::LeftButton) {
-        setSelected(!isSelected);
-        emit tagClicked();
+    switch (event->button()) {
+        case Qt::LeftButton:
+            setState(TagState::Selected);
+            break;
+        case Qt::RightButton:
+            setState(TagState::Excluded);
+            break;
+        case Qt::MiddleButton:
+            setState(TagState::NotSelected);
+            break;
+        default:
+            break;
     }
-    QWidget::mousePressEvent(event);
-}
 
-void DeckPreviewTagDisplayWidget::setSelected(bool selected)
-{
-    isSelected = selected;
-    update(); // Trigger a repaint
+    emit tagClicked();
+    QWidget::mousePressEvent(event);
 }
 
 void DeckPreviewTagDisplayWidget::paintEvent(QPaintEvent *event)
 {
     QPainter painter(this);
 
-    // Set background color
-    QColor backgroundColor = isSelected ? QColor(173, 216, 230) : Qt::white;
+    QColor backgroundColor;
+    QColor borderColor;
+    int borderWidth;
+
+    switch (state) {
+        case TagState::Selected:
+            backgroundColor = QColor(173, 216, 230); // Light blue
+            borderColor = Qt::blue;
+            borderWidth = 2;
+            break;
+        case TagState::Excluded:
+            backgroundColor = QColor(255, 182, 193); // Light red/pink
+            borderColor = Qt::red;
+            borderWidth = 2;
+            break;
+        case TagState::NotSelected:
+        default:
+            backgroundColor = Qt::white;
+            borderColor = Qt::gray;
+            borderWidth = 1;
+            break;
+    }
+
     painter.setBrush(backgroundColor);
     painter.setPen(Qt::NoPen);
-
-    // Draw background
     painter.drawRect(rect());
 
-    // Draw border
-    QColor borderColor = isSelected ? Qt::blue : Qt::gray;
-    QPen borderPen(borderColor, isSelected ? 2 : 1);
+    QPen borderPen(borderColor, borderWidth);
     painter.setPen(borderPen);
-    painter.drawRect(rect().adjusted(0, 0, -1, -1)); // Adjust for pen width
+    painter.drawRect(rect().adjusted(0, 0, -1, -1));
 
     // Calculate font size based on widget height
     QFont font = painter.font();

cockatrice/src/client/ui/widgets/visual_deck_storage/deck_preview/deck_preview_tag_display_widget.h

@@ -6,6 +6,13 @@
 #include <QString>
 #include <QWidget>
 
+enum class TagState
+{
+    NotSelected,
+    Selected,
+    Excluded
+};
+
 class DeckPreviewTagDisplayWidget : public QWidget
 {
     Q_OBJECT
@@ -22,16 +29,16 @@ public:
     {
         return tagName;
     }
-    bool getSelected() const
+    TagState getState() const
     {
-        return isSelected;
+        return state;
     }
 
-    /**
-     * @brief Sets the selected state of the tag.
-     * @param selected True if the tag is selected, false otherwise.
-     */
-    void setSelected(bool selected);
+    void setState(const TagState newState)
+    {
+        state = newState;
+        update();
+    };
 
 signals:
     /**
@@ -61,7 +68,7 @@ private:
     QLabel *tagLabel;         ///< Label for displaying the tag name.
     QPushButton *closeButton; ///< Button to close/remove the tag.
     QString tagName;          ///< The name of the tag.
-    bool isSelected;          ///< Indicates whether the tag is selected.
+    TagState state;           ///< Indicates whether the tag is unselected, selected, or excluded.
 };
 
 #endif // DECK_PREVIEW_TAG_DISPLAY_WIDGET_H

cockatrice/src/client/ui/widgets/visual_deck_storage/visual_deck_storage_tag_filter_widget.cpp

@@ -33,32 +33,42 @@ void VisualDeckStorageTagFilterWidget::showEvent(QShowEvent *event)
 
 void VisualDeckStorageTagFilterWidget::filterDecksBySelectedTags(const QList<DeckPreviewWidget *> &deckPreviews) const
 {
-    // Collect selected tags from DeckPreviewTagDisplayWidget
     QStringList selectedTags;
+    QStringList excludedTags;
+
+    // Collect selected and excluded tags
     for (DeckPreviewTagDisplayWidget *tagWidget : findChildren<DeckPreviewTagDisplayWidget *>()) {
-        if (tagWidget->getSelected()) {
-            selectedTags.append(tagWidget->getTagName());
+        switch (tagWidget->getState()) {
+            case TagState::Selected:
+                selectedTags.append(tagWidget->getTagName());
+                break;
+            case TagState::Excluded:
+                excludedTags.append(tagWidget->getTagName());
+                break;
+            default:
+                break;
         }
     }
 
-    // If no tags are selected, set all decks as visible
-    if (selectedTags.isEmpty()) {
+    // If no tags are selected or excluded, show all
+    if (selectedTags.isEmpty() && excludedTags.isEmpty()) {
         for (DeckPreviewWidget *deckPreview : deckPreviews) {
             deckPreview->filteredByTags = false;
         }
         return;
     }
 
-    // Filter DeckPreviewWidgets that contain all of the selected tags
-    QList<DeckPreviewWidget *> filteredDecks;
     for (DeckPreviewWidget *deckPreview : deckPreviews) {
         QStringList deckTags = deckPreview->deckLoader->getTags();
 
-        // Check if all selectedTags are in deckTags
-        bool allTagsPresent = std::all_of(selectedTags.begin(), selectedTags.end(),
+        bool hasAllSelected = std::all_of(selectedTags.begin(), selectedTags.end(),
                                           [&deckTags](const QString &tag) { return deckTags.contains(tag); });
 
-        deckPreview->filteredByTags = !allTagsPresent;
+        bool hasAnyExcluded = std::any_of(excludedTags.begin(), excludedTags.end(),
+                                          [&deckTags](const QString &tag) { return deckTags.contains(tag); });
+
+        // Filter out if any excluded tag is present or if any selected tag is missing
+        deckPreview->filteredByTags = !(hasAllSelected && !hasAnyExcluded);
     }
 }
 
@@ -72,13 +82,15 @@ void VisualDeckStorageTagFilterWidget::refreshTags()
 
 void VisualDeckStorageTagFilterWidget::removeTagsNotInList(const QSet<QString> &tags)
 {
-    // Iterate through all DeckPreviewTagDisplayWidgets
+    auto *flowWidget = findChild<FlowWidget *>();
+
     for (DeckPreviewTagDisplayWidget *tagWidget : findChildren<DeckPreviewTagDisplayWidget *>()) {
-        // If the tag is not in the provided tags list, remove the widget
-        if (!tags.contains(tagWidget->getTagName())) {
-            auto *flowWidget = findChild<FlowWidget *>();
+        const QString &tagName = tagWidget->getTagName();
+
+        // Keep the tag widget if it is either selected or excluded
+        if (!tags.contains(tagName) && tagWidget->getState() == TagState::NotSelected) {
             flowWidget->removeWidget(tagWidget);
-            tagWidget->deleteLater(); // Safely delete the widget
+            tagWidget->deleteLater();
         }
     }
 }