1. rcrnstn/glbackend
  2. include
  3. glbackend.hpp
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Add GLBackend, GLBackendDefault

Robert Cranston authored on 12/10/2021 00:02:06
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include/glbackend.hpp
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-/// Include guard
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+/// Guards
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 #ifndef GLBACKEND_HPP_
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 #define GLBACKEND_HPP_
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 };
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-/// Include guard
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+/// Guards
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 #endif
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Add project

Robert Cranston authored on 04/06/2021 19:51:44
Showing 1 changed files
include/glbackend.hpp
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new file mode 100644
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+/// Include guard
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+
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+#ifndef GLBACKEND_HPP_
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+#define GLBACKEND_HPP_
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+
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+
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+/// Includes
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+
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+#include <array>
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+#include <functional>
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+#include <ostream>
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+#include <string>
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+#include <utility>
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+#include <vector>
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+
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+#include <glbase.hpp>
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+
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+
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+/// Class definition
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+
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+class GLBackend : public GLBase
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+{
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+
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+public:
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+
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+    //// Context
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+
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+    void virtual current() = 0;
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+
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+    //// Render loop
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+
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+    void virtual swap() = 0;
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+
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+    void virtual events() = 0;
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+
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+    bool virtual running() const = 0;
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+    bool virtual running(bool running) = 0;
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+
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+    float virtual time() const = 0;
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+    float virtual time(float time) = 0;
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+
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+    void run(float dt_fixed = 0.0F);
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+
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+    using CallbackUpdate   = std::function<void(float t, float dt, bool last)>;
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+    using CallbackRender   = std::function<void()>;
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+
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+    GLBASE_ACCESS(CallbackUpdate,   callback_update)
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+    GLBASE_ACCESS(CallbackRender,   callback_render)
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+
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+    //// Input and output
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+
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+    using Point = std::array<GLfloat, 2>;
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+    using Size  = std::array<GLsizei, 2>;
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+
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+    void virtual lock(bool lock) = 0;
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+
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+    bool virtual key   (std::string const & key)    const = 0;
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+    bool virtual button(int                 button) const = 0;
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+
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+    GLBASE_GET(Point, scroll)
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+    GLBASE_GET(Point, position)
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+    GLBASE_GET(Point, move)
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+    GLBASE_GET(Size,  size)
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+
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+    using CallbackKey      = std::function<void(std::string const &)>;
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+    using CallbackButton   = std::function<void(int)>;
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+    using CallbackScroll   = std::function<void(Point)>;
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+    using CallbackPosition = std::function<void(Point)>;
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+    using CallbackMove     = std::function<void(Point)>;
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+    using CallbackSize     = std::function<void(Size)>;
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+
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+    GLBASE_ACCESS(CallbackKey,      callback_key)
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+    GLBASE_ACCESS(CallbackButton,   callback_button)
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+    GLBASE_ACCESS(CallbackScroll,   callback_scroll)
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+    GLBASE_ACCESS(CallbackPosition, callback_position)
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+    GLBASE_ACCESS(CallbackMove,     callback_move)
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+    GLBASE_ACCESS(CallbackSize,     callback_size)
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+
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+    //// Path
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+
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+    GLBASE_ACCESS_GLOBAL(Path, prefix)
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+
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+    //// TGA
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+
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+    void tga_write(
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+        Path const & path
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+    ) const;
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+
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+    bool tga_compare(
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+        Path const & path,
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+        bool         write_on_failed_read = false
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+    ) const;
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+
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+    //// Debug
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+
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+    std::string virtual debug_info() const;
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+
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+protected:
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+
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+    //// Special member functions
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+
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+    GLBackend();
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+    GLBackend(GLBackend &&) = default;
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+    virtual ~GLBackend() = default;
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+
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+    void static init_();
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+
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+    //// TGA
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+
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+    TGA_ tga_() const;
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+
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+    //// Debug
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+
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+    void static debug_info_(
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+        std::ostream                                           & ostream,
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+        std::string                                      const & category,
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+        std::vector<std::pair<std::string, std::string>> const & values,
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+        char                                                     fill = '.'
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+    );
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+
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+    void static GLAPIENTRY debug_gl_message_callback_(
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+        GLenum          source,
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+        GLenum          type,
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+        GLuint          id,
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+        GLenum          severity,
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+        GLsizei         length,
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+        GLchar  const * message,
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+        void    const * user_param
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+    );
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+
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+    std::string static debug_gl_message_(std::string message);
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+
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+protected:
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+
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+    //// Render loop
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+
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+    CallbackUpdate   callback_update_;
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+    CallbackRender   callback_render_;
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+
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+    //// Input and output
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+
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+    Point scroll_;
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+    Point position_;
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+    Point move_;
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+    Size  size_;
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+
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+    CallbackKey      callback_key_;
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+    CallbackButton   callback_button_;
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+    CallbackScroll   callback_scroll_;
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+    CallbackPosition callback_position_;
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+    CallbackMove     callback_move_;
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+    CallbackSize     callback_size_;
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+
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+    //// Path
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+
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+    Path static thread_local prefix_;
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+
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+};
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+
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+
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+/// Include guard
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+
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+#endif