Add SDL2 support

src/SDL2/FontCache.cpp

@@ -0,0 +1,69 @@
+#if defined(TESSESFRAMEWORK_ENABLE_SDL2)
+#include "TessesFramework/SDL2/FontCache.hpp"
+namespace Tesses::Framework::SDL2 {
+void FontCache::Load(SDL_Renderer* renderer,TTF_Font* font,const SDL_Color& color)
+{
+    this->mw=0;
+    this->mh=0;
+    this->ps=ps;
+    
+    for(size_t i = 0; i < this->font_chrs.size();i++)
+    {
+        SDL_Surface* surf = TTF_RenderGlyph_Blended(font,(Uint16)(i+32),color);
+        if(surf->w > this->mw) mw = surf->w;
+        if(surf->h > this->mh) mh = surf->h;
+        this->font_chrs[i] = SDL_CreateTextureFromSurface(renderer,surf);
+        SDL_FreeSurface(surf);
+       
+    }
+}
+FontCache::FontCache(SDL_Renderer* renderer,std::string font,int sz,const SDL_Color& color)
+{
+    TTF_Font* f = TTF_OpenFont(font.c_str(),sz);
+    Load(renderer,f,color);
+    TTF_CloseFont(f);
+}
+FontCache::FontCache(SDL_Renderer* renderer,const uint8_t* mem,size_t cnt,int sz,const SDL_Color& color)
+{
+    
+    TTF_Font* f = TTF_OpenFontRW(SDL_RWFromConstMem(mem,cnt),1,sz);
+    Load(renderer,f,color);
+    TTF_CloseFont(f);
+}
+FontCache::FontCache(SDL_Renderer* renderer,const std::vector<uint8_t>& v,int sz,const SDL_Color& color) : FontCache(renderer,v.data(),v.size(),sz,color)
+{
+
+}
+FontCache::FontCache(SDL_Renderer* renderer,TTF_Font* font,const SDL_Color& color)
+{
+    this->Load(renderer,font,color);
+}
+
+SDL_Texture* FontCache::operator[](char c)
+{
+    if(c >= 32 && c <= 126)
+    {
+        return this->font_chrs[c-32];
+    }
+    return this->font_chrs[95];
+}
+FontCache::~FontCache()
+{
+    for(auto item : this->font_chrs)
+        SDL_DestroyTexture(item);
+}
+int FontCache::MaxWidth()
+{
+    return this->mw;
+}
+int FontCache::MaxHeight()
+{
+    return this->mh;
+}
+
+int FontCache::PointSize()
+{
+    return this->ps;
+}
+}
+#endif