Readd font support (not workign yet)

include/pd/lithium/font.hpp

@@ -0,0 +1,103 @@
+#pragma once
+
+#include <pd/lithium/texture.hpp>
+
+using LiTextFlags = PD::u32;
+enum LiTextFlags_ : PD::u32 {
+  LiTextFlags_None = 0,             ///< Do nothing
+  LiTextFlags_AlignRight = 1 << 0,  ///< Align Right of position
+  LiTextFlags_AlignMid = 1 << 1,    ///< Align in the middle of pos and box
+  LiTextFlags_Shaddow = 1 << 2,     ///< Draws the text twice to create shaddow
+  LiTextFlags_Wrap = 1 << 3,        ///< Wrap Text: May be runs better with TMS
+  LiTextFlags_Short = 1 << 4,       ///< Short Text: May be runs better with TMS
+  LiTextFlags_Scroll = 1 << 5,      ///< Not implemented [scoll text if to long]
+  LiTextFlags_NoOOS = 1 << 6,       ///< No Out of Screen Rendering
+};
+
+namespace PD {
+namespace Li {
+class Drawlist;
+class PD_API Font {
+ public:
+  struct Codepoint {
+    u32 pCodepoint;
+    fvec4 SimpleUV;
+    size_t Tex;
+    fvec2 Size;
+    float Offset = 0.f;
+    bool pInvalid;
+  };
+  Font() {}
+  ~Font() {}
+
+  /**
+   * Load a TTF File
+   * @param path Path to the TTF file
+   * @param px_height Pixelheight of the codepoints (limit by 64)
+   */
+  void LoadTTF(const std::string& path, int px_height = 32);
+  /**
+   * Load a TTF File from Memory
+   * @param data File data
+   * @param px_height Pixelheight of the codepoints (limit by 64)
+   */
+  void LoadTTF(const std::vector<u8>& data, int px_height = 32);
+  /**
+   * Function that loads a default integrated font...
+   * This will only work if PD_LI_INCLUDE_FONTS was set
+   * on lithium build cause otherwise the font data is not included
+   */
+  void LoadDefaultFont(int id = 0, int pixel_height = 32);
+  /**
+   * Getter for Codepoint reference
+   * @return codepoint dataholder reference
+   */
+  Codepoint& GetCodepoint(u32 c);
+
+  /**
+   * Get Text Bounding Box
+   */
+  fvec2 GetTextBounds(const char* text, float scale);
+  /**
+   * Extended Draw Text Function that vreates a Command List
+   */
+  void CmdTextEx(Drawlist& dl, const fvec2& pos, u32 color, float scale,
+                 const char* text, LiTextFlags flags = 0, const fvec2& box = 0);
+
+  /**
+   * Garbage collection for TextMapSystem
+   */
+  void CleanupTMS();
+  /**
+   * Utility function to create a font atlas
+   * During TTF loading (Internal and should not be called)
+   */
+  void BakeAndPush(bool final, std::vector<u8>& font_tex, int texszs);
+  std::string pWrapText(const std::string& txt, float scale,
+                        const PD::fvec2& max, PD::fvec2& dim);
+  std::string pShortText(const std::string& txt, float scale,
+                         const PD::fvec2& max, PD::fvec2& dim);
+
+  /** Data Section */
+  int PixelHeight = 0;
+  int DefaultPixelHeight = 24;
+  std::vector<TextureID> Textures;
+  /**
+   * 32Bit Codepoint Dataholder reference map
+   * **Now using unordered map**
+   */
+  std::unordered_map<u32, Codepoint> CodeMap;
+  /** TMS */
+  struct TMELEM {
+    PD::u32 ID;
+    PD::fvec2 Size;
+    std::string Text;
+    u64 TimeStamp;
+  };
+  std::unordered_map<u32, TMELEM> pTMS;
+
+ private:
+  size_t pCurrentTex = 0;
+};
+}  // namespace Li
+}  // namespace PD