Add texpart for viewing textures

parts/CMakeLists.txt

@@ -5,3 +5,4 @@ add_subdirectory(exd)
 add_subdirectory(exl)
 add_subdirectory(hex)
 add_subdirectory(mdl)
+add_subdirectory(tex)

parts/tex/imagelabel.cpp

@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: 2023 Joshua Goins <josh@redstrate.com>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "imagelabel.h"
+
+ImageLabel::ImageLabel(QWidget *parent)
+    : QLabel(parent)
+{
+    this->setMinimumSize(1, 1);
+    setScaledContents(false);
+}
+
+void ImageLabel::setQPixmap(const QPixmap &p)
+{
+    pix = p;
+    QLabel::setPixmap(scaledPixmap());
+}
+
+int ImageLabel::heightForWidth(int width) const
+{
+    return pix.isNull() ? height() : (pix.height() * width) / pix.width();
+}
+
+QSize ImageLabel::sizeHint() const
+{
+    const int w = this->width();
+    return {w, heightForWidth(w)};
+}
+
+QPixmap ImageLabel::scaledPixmap() const
+{
+    return pix.scaled(this->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+}
+
+void ImageLabel::resizeEvent(QResizeEvent *e)
+{
+    Q_UNUSED(e);
+    if (!pix.isNull()) {
+        QLabel::setPixmap(scaledPixmap());
+    }
+}

parts/tex/imagelabel.h

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: 2023 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QLabel>
+
+class ImageLabel : public QLabel
+{
+    Q_OBJECT
+public:
+    explicit ImageLabel(QWidget *parent = nullptr);
+
+    [[nodiscard]] int heightForWidth(int width) const override;
+    [[nodiscard]] QSize sizeHint() const override;
+    [[nodiscard]] QPixmap scaledPixmap() const;
+
+public Q_SLOTS:
+    void setQPixmap(const QPixmap &);
+    void resizeEvent(QResizeEvent *) override;
+
+private:
+    QPixmap pix;
+};