Add a new module for resizing images including Lanczos

image_processing/resize_image.h

@@ -0,0 +1,19 @@
+#ifndef RESIZE_IMAGE_H
+#define RESIZE_IMAGE_H
+
+#include <QImage>
+#include <QPixmap>
+
+enum class ScaleMethod {
+    Nearest = 0,
+    Bilinear = 1,
+    Lanczos = 2
+};
+
+// Base scaling API — callers are responsible for supplying the correct target dimensions.
+
+QPixmap scalePixmap(const QPixmap &pixmap, int width, int height, ScaleMethod method = ScaleMethod::Lanczos);
+
+QImage scaleImage(const QImage &image, int width, int height, ScaleMethod method = ScaleMethod::Lanczos);
+
+#endif // RESIZE_IMAGE_H