1 files changed, 126 insertions, 0 deletions
diff --git a/libs/preview_dds_native/src/ddspreview.cpp b/libs/preview_dds_native/src/ddspreview.cpp
new file mode 100644
index 0000000..2bb95be
--- /dev/null
+++ b/libs/preview_dds_native/src/ddspreview.cpp
@@ -0,0 +1,126 @@
+#include "ddspreview.h"
+#include "ddsfile.h"
+#include "ddswidget.h"
+
+#include <QLabel>
+#include <QVBoxLayout>
+#include <QWidget>
+
+using namespace MOBase;
+
+DDSPreview::DDSPreview() {}
+
+bool DDSPreview::init(IOrganizer* moInfo)
+{
+  m_organizer = moInfo;
+  return true;
+}
+
+QString DDSPreview::name() const
+{
+  return "DDS Preview (Native)";
+}
+
+QString DDSPreview::localizedName() const
+{
+  return tr("DDS Preview (Native)");
+}
+
+QString DDSPreview::author() const
+{
+  return "AnyOldName3";
+}
+
+QString DDSPreview::description() const
+{
+  return tr("Displays DDS texture files using OpenGL.");
+}
+
+VersionInfo DDSPreview::version() const
+{
+  return VersionInfo(1, 0, 0, VersionInfo::RELEASE_FINAL);
+}
+
+QList<PluginSetting> DDSPreview::settings() const
+{
+  return {};
+}
+
+std::set<QString> DDSPreview::supportedExtensions() const
+{
+  return {"dds"};
+}
+
+bool DDSPreview::supportsArchives() const
+{
+  return true;
+}
+
+QWidget* DDSPreview::genFilePreview(const QString& fileName,
+                                    const QSize& maxSize) const
+{
+  DDSFile dds;
+  if (!dds.loadFromFile(fileName)) {
+    QLabel* label = new QLabel(tr("Failed to load DDS file."));
+    label->setAlignment(Qt::AlignCenter);
+    return label;
+  }
+  return buildPreview(dds, maxSize);
+}
+
+QWidget* DDSPreview::genDataPreview(const QByteArray& fileData,
+                                    const QString& fileName,
+                                    const QSize& maxSize) const
+{
+  DDSFile dds;
+  if (!dds.loadFromData(fileData)) {
+    QLabel* label = new QLabel(tr("Failed to load DDS data."));
+    label->setAlignment(Qt::AlignCenter);
+    return label;
+  }
+  return buildPreview(dds, maxSize);
+}
+
+QWidget* DDSPreview::buildPreview(DDSFile& dds, const QSize& maxSize) const
+{
+  QWidget* container    = new QWidget();
+  QVBoxLayout* layout   = new QVBoxLayout(container);
+
+  // Description label
+  QLabel* descLabel = new QLabel(dds.description());
+  descLabel->setAlignment(Qt::AlignCenter);
+  layout->addWidget(descLabel);
+
+  // OpenGL preview widget — we need to keep the DDSFile alive, so store
+  // it in the container. We use a shared_ptr stored as a property.
+  auto* ddsPtr = new DDSFile(std::move(dds));
+  DDSWidget* widget = new DDSWidget(*ddsPtr, container);
+
+  // Clean up DDSFile when container is destroyed
+  QObject::connect(container, &QObject::destroyed, [ddsPtr]() {
+    delete ddsPtr;
+  });
+
+  // Size the widget proportionally
+  int previewW = maxSize.width();
+  int previewH = maxSize.height() - 30;  // leave room for label
+  if (ddsPtr->width() > 0 && ddsPtr->height() > 0) {
+    float texAspect =
+        static_cast<float>(ddsPtr->width()) / ddsPtr->height();
+    float availAspect =
+        static_cast<float>(previewW) / std::max(1, previewH);
+    if (texAspect > availAspect) {
+      previewH = static_cast<int>(previewW / texAspect);
+    } else {
+      previewW = static_cast<int>(previewH * texAspect);
+    }
+  }
+  widget->setMinimumSize(std::min(previewW, static_cast<int>(ddsPtr->width())),
+                         std::min(previewH, static_cast<int>(ddsPtr->height())));
+  widget->setMaximumSize(previewW, previewH);
+
+  layout->addWidget(widget);
+  container->setLayout(layout);
+
+  return container;
+}