整理代码

video/core/Image.h

@@ -0,0 +1,52 @@
+#ifndef CF80473A_40DD_43E5_B0D7_73F2205E9DF6
+#define CF80473A_40DD_43E5_B0D7_73F2205E9DF6
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include "Color.h"
+#include "GeometryTypes.h"
+#include <CImg.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include <Poco/SharedPtr.h>
+#include <functional>
+
+using namespace cimg_library;
+
+namespace Video
+{
+namespace Core
+{
+/*
+ *******************************************************************************
+ *                                CLASS DECLARE
+ *******************************************************************************
+ */
+class Image: public CImg<uint8_t>
+{
+public:
+    using Ptr = Poco::SharedPtr<Image>;
+    using CImg::CImg;
+
+    void drawText(const std::string& text, const std::string& font, int size, Color foreColor, Color bgColor);
+    void drawRectangle(const Rect& rect, Color& color, int border = 0);
+    void drawImage(int x, int y, Ptr pImage);
+    void getPixel(int x, int y, Color& color);
+    void forceAlpha(uint8_t alpha);
+
+    static void computeStringSize(const std::string& text, const std::string& font, int fontsz, Size& size);
+
+protected:
+    static int  computeStringBBox(std::wstring text, FT_Face face, FT_BBox& bbox);
+    static void convertText(const std::string& from, std::wstring& to);
+    static void runOnFreeType(const std::string& font, int size, std::function<void(FT_Face&)> func);
+
+private:
+    bool    _forceAlphaEnabled = false;
+    uint8_t _forceAlphaValue;
+};
+}
+}
+#endif