Preview token edits live and preserve custom drafts

cockatrice/src/game_graphics/dialogs/token_preview_widget.cpp

@@ -0,0 +1,86 @@
+#include "token_preview_widget.h"
+
+#include "../board/abstract_card_item.h"
+
+#include <QGraphicsScene>
+#include <QPainter>
+#include <QResizeEvent>
+#include <libcockatrice/card/card_info.h>
+
+class TokenPreviewCardItem : public AbstractCardItem
+{
+public:
+    TokenPreviewCardItem()
+    {
+        setFlag(ItemIsSelectable, false);
+        setAcceptedMouseButtons(Qt::NoButton);
+        setAcceptHoverEvents(false);
+        setCursor(Qt::ArrowCursor);
+        connect(state, &CardState::stateChanged, this, [this] { update(); });
+    }
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override
+    {
+        // Show what the user is creating even when it will enter face down.
+        // Reuse the board's artwork, custom-token background and name rendering.
+        AbstractCardItem::paint(painter, option, widget);
+
+        const QSizeF translatedSize = getTranslatedSize(painter);
+        const qreal scale = translatedSize.width() / boundingRect().width();
+        painter->save();
+        transformPainter(painter, translatedSize, 0);
+        painter->setPen(Qt::white);
+        painter->setBackground(Qt::black);
+        painter->setBackgroundMode(Qt::OpaqueMode);
+        const QRectF textRect(4 * scale, 4 * scale, translatedSize.width() - 8 * scale,
+                              translatedSize.height() - 8 * scale);
+        painter->drawText(textRect, Qt::AlignCenter | Qt::TextWrapAnywhere, state->getAnnotation());
+        if (state->getPT() != getCardInfo().getPowTough()) {
+            painter->setPen(QColor(255, 150, 0));
+        }
+        painter->drawText(textRect, Qt::AlignRight | Qt::AlignBottom, state->getPT());
+        painter->restore();
+    }
+};
+
+TokenPreviewWidget::TokenPreviewWidget(QWidget *parent) : QGraphicsView(parent), card(new TokenPreviewCardItem)
+{
+    auto *previewScene = new QGraphicsScene(this);
+    previewScene->addItem(card);
+    previewScene->setSceneRect(card->boundingRect());
+    setScene(previewScene);
+    setInteractive(false);
+    setFocusPolicy(Qt::NoFocus);
+    setFrameShape(QFrame::NoFrame);
+    viewport()->setBackgroundRole(QPalette::Window);
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setMinimumSize(150, 200);
+    setAccessibleName(tr("Token preview"));
+}
+
+void TokenPreviewWidget::setToken(const TokenInfo &token)
+{
+    card->setCardRef({token.name, token.providerId});
+    card->setColor(token.color);
+    card->setFaceDown(false);
+    card->getState()->setPT(token.pt);
+    card->getState()->setAnnotation(token.annotation);
+    setToolTip(token.annotation);
+    QString description = token.name + " " + token.pt + " " + token.annotation;
+    if (token.faceDown) {
+        description += " " + tr("Will be created face down.");
+    }
+    setAccessibleDescription(description);
+}
+
+QSize TokenPreviewWidget::sizeHint() const
+{
+    return {200, 280};
+}
+
+void TokenPreviewWidget::resizeEvent(QResizeEvent *event)
+{
+    QGraphicsView::resizeEvent(event);
+    fitInView(sceneRect(), Qt::KeepAspectRatio);
+}