1 files changed, 46 insertions, 0 deletions
diff --git a/tracker-easy/preview.h b/tracker-easy/preview.h
new file mode 100644
index 00000000..d5cc8c30
--- /dev/null
+++ b/tracker-easy/preview.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2019 Stephane Lenclud
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+
+
+#pragma once
+
+#include <opencv2/core.hpp>
+#include <QImage>
+
+namespace EasyTracker
+{
+
+    struct Preview
+    {
+        Preview(int w, int h);
+
+        Preview& operator=(const cv::Mat& frame);
+        QImage get_bitmap();
+        void DrawCross(const cv::Point& aPoint, const cv::Scalar& aColor);
+        void DrawInfo(const std::string& aString);
+
+        operator cv::Mat&() { return iFrameResized; }
+        operator cv::Mat const&() const { return iFrameResized; }
+       
+    private:
+        static void ensure_size(cv::Mat& frame, int w, int h, int type);
+
+    public:
+        // Frame with an 8 bits channel size
+        cv::Mat iFrameChannelSizeOne;
+        // Frame with three channels for RGB
+        cv::Mat iFrameRgb;
+        // Frame rezised to widget dimension
+        cv::Mat iFrameResized;
+        // Frame ready to be packed in a QImage for use in our widget
+        cv::Mat iFrameWidget;
+        
+    };
+
+}
+