refactor: Rename blackgui to swift::gui

src/gui/elidedpushbutton.cpp

@@ -0,0 +1,38 @@
+// SPDX-FileCopyrightText: Copyright (C) 2019 swift Project Community / Contributors
+// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
+
+#include "elidedpushbutton.h"
+
+#include <QPainter>
+#include <QTextLine>
+#include <QFontMetrics>
+
+namespace swift::gui
+{
+    CElidedPushButton::CElidedPushButton(QWidget *parent) : QPushButton(parent)
+    {}
+
+    CElidedPushButton::CElidedPushButton(const QString &text, QWidget *parent)
+        : QPushButton(parent), m_elided(false), m_content(text)
+    {
+        this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+    }
+
+    void CElidedPushButton::setText(const QString &newText)
+    {
+        m_content = newText;
+        this->update();
+    }
+
+    void CElidedPushButton::paintEvent(QPaintEvent *event)
+    {
+        QPainter painter(this);
+        const QFontMetrics fontMetrics = painter.fontMetrics();
+        const int usableWidth = qRound(0.9 * this->width());
+
+        const QString elidedText = fontMetrics.elidedText(m_content, Qt::ElideRight, usableWidth);
+        m_elided = (elidedText != m_content);
+        QPushButton::setText(elidedText);
+        QPushButton::paintEvent(event);
+    }
+} // ns