various UI and rt changes

src/Engine/Asset/FontAsset.h

@@ -4,6 +4,7 @@
 #include "Graphics/Texture.h"
 #include "Math/Math.h"
 #include <freetype/freetype.h>
+#include <harfbuzz/hb.h>
 
 namespace Seele {
 class FontAsset : public Asset {
@@ -25,25 +26,26 @@ class FontAsset : public Asset {
         void load(ArchiveBuffer& buffer);
     };
     struct FontData {
-        int32 ascent;
-        int32 descent;
-        int32 linegap;
         Map<uint32, Glyph> glyphs;
     };
-    const Glyph& getGlyphData(char c, uint32 fontSize) {
-        if (!fontSizes.contains(fontSize))
-            loadFontSize(fontSize);
-        return fontSizes[fontSize].glyphs[c];
-    }
-    const FontData& getFontData(uint32 fontSize) { return fontSizes[fontSize]; }
     void loadFace();
 
+    struct RenderGlyph {
+        Gfx::PTexture2D texture;
+        UVector2 position;
+        UVector2 dimensions;
+    };
+    UVector2 shapeText(std::string_view view, uint32 fontSize, Array<RenderGlyph>& render);
+
   private:
-    void loadFontSize(uint32 fontSize);
+    void loadGlyphs(uint32 fontSize);
     Gfx::PGraphics graphics;
+    hb_blob_t* blob;
+    hb_face_t* hb_face;
+    hb_font_t* hb_font;
     FT_Library ft;
-    FT_Face face;
-    Array<uint8> ttfFile;
+    FT_Face ft_face;
+    Array<char> ttfFile;
     Map<uint32, FontData> fontSizes;
     friend class FontLoader;
 };