Edhrec tab (#5512)

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>
Co-authored-by: Zach H <zahalpern+github@gmail.com>

cockatrice/src/client/ui/widgets/general/display/banner_widget.cpp

@@ -0,0 +1,63 @@
+#include "banner_widget.h"
+
+#include <QLinearGradient>
+#include <QMouseEvent>
+#include <QPainter>
+#include <QVBoxLayout>
+
+BannerWidget::BannerWidget(QWidget *parent, const QString &text, Qt::Orientation orientation, int transparency)
+    : QWidget(parent), gradientOrientation(orientation), transparency(qBound(0, transparency, 100))
+{
+    // Create the banner label and set properties
+    bannerLabel = new QLabel(text, this);
+    bannerLabel->setAlignment(Qt::AlignCenter);
+    bannerLabel->setStyleSheet("font-size: 24px; font-weight: bold; color: white;");
+
+    // Layout to center the banner label
+    QVBoxLayout *layout = new QVBoxLayout(this);
+    layout->addWidget(bannerLabel);
+    layout->setContentsMargins(0, 20, 0, 20); // Space for the gradient
+    setLayout(layout);
+
+    // Set minimum height for the widget
+    setMinimumHeight(100);
+    connect(this, &BannerWidget::buddyVisibilityChanged, this, &BannerWidget::toggleBuddyVisibility);
+}
+
+void BannerWidget::mousePressEvent(QMouseEvent *event)
+{
+    QWidget::mousePressEvent(event);
+    emit buddyVisibilityChanged();
+}
+
+void BannerWidget::toggleBuddyVisibility() const
+{
+    if (buddy) {
+        buddy->setVisible(!buddy->isVisible());
+    }
+}
+
+void BannerWidget::paintEvent(QPaintEvent *event)
+{
+    Q_UNUSED(event);
+
+    QPainter painter(this);
+
+    // Calculate alpha based on transparency percentage
+    int alpha = (255 * transparency) / 100;
+
+    // Determine gradient direction
+    QLinearGradient gradient;
+    if (gradientOrientation == Qt::Vertical) {
+        gradient = QLinearGradient(rect().topLeft(), rect().bottomLeft());
+    } else {
+        gradient = QLinearGradient(rect().topLeft(), rect().topRight());
+    }
+
+    // Set neutral gradient colors with calculated transparency
+    gradient.setColorAt(0, QColor(200, 200, 200, alpha));       // Light grey with alpha
+    gradient.setColorAt(1, QColor(100, 100, 100, alpha / 1.5)); // Darker grey, slightly more transparent
+
+    // Fill the widget background with the gradient
+    painter.fillRect(rect(), gradient);
+}