[Completer] Minimum size popup, fall back to compact design if not possible. (#7111)

* [Completer] Minimum size popup, fall back to compact design if not possible.

Took 15 minutes

Took 6 seconds


Took 5 minutes

* [Completer] Fix popup going offscreen by clamping in screen coordinates

The position clamping in applyPopupWidth() was comparing popup->pos()
(parent coordinates) against screen->availableGeometry() (screen
coordinates).  When the parent widget is not at the screen origin the
clamping computed a position in the wrong coordinate space, placing the
popup offscreen.  Convert to global coordinates first, clamp, then map
back to parent coordinates.

* [Completer] Clamp popup from geometry() in screen coordinates

setMinimumWidth() already widens the popup synchronously, so the old
width() < minWidth guard never ran and the popup grew past the right
screen edge. The popup is also a top-level Qt::Popup window, so move()
takes global coordinates and the mapFromGlobal round-trip moved it to
the top-left of the screen. Clamp x from geometry() after
setMinimumWidth() and move(QPoint(clampedX, popup->y())) directly.

---------

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

cockatrice/src/interface/widgets/utility/card_completer_delegate.h

@@ -36,6 +36,9 @@ public:
     void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
     QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
 
+    // Content width of one popup row; the completer popup is sized to fit it.
+    static constexpr int PopupRowWidth = 480;
+
 private:
     // Set short codes, resolved once per card name and cached
     mutable QCache<QString, QString> setCodeCache;
@@ -48,7 +51,8 @@ private:
 
     // Draw all mana pips for a cost string like "2RG" or "{2}{R}{G}"; split and
     // adventure costs ("1W // W") are drawn as separate groups. Returns the left-most x used
-    int drawManaCost(QPainter *p, const QRect &row, const QString &manaCost, int radius) const;
+    int
+    drawManaCost(QPainter *p, const QRect &row, const QString &manaCost, int radius, int spacing, int rightPad) const;
 
     // Resolve the preferred printing's set short code for a card
     QString setCodeForCard(const QSharedPointer<CardInfo> &card) const;