Added ImGuiWrapper

src/slic3r/GUI/ImGuiWrapper.hpp

@@ -0,0 +1,68 @@
+#ifndef slic3r_ImGuiWrapper_hpp_
+#define slic3r_ImGuiWrapper_hpp_
+
+#include <imgui\imgui.h>
+#include <string>
+#include <map>
+
+class wxMouseEvent;
+
+namespace Slic3r {
+namespace GUI {
+
+class ImGuiWrapper
+{
+    std::string m_glsl_version_string;
+    unsigned int m_shader_handle;
+    unsigned int m_vert_handle;
+    unsigned int m_frag_handle;
+    unsigned int m_vbo_handle;
+    unsigned int m_elements_handle;
+    int m_attrib_location_tex;
+    int m_attrib_location_proj_mtx;
+    int m_attrib_location_position;
+    int m_attrib_location_uv;
+    int m_attrib_location_color;
+
+    typedef std::map<std::string, ImFont*> FontsMap;
+
+    FontsMap m_fonts;
+    unsigned int m_font_texture;
+
+public:
+    ImGuiWrapper();
+
+    bool init();
+    void shutdown();
+
+    void set_display_size(float w, float h);
+    void update_mouse_data(wxMouseEvent& evt);
+
+    void new_frame();
+    void render();
+
+    void set_next_window_pos(float x, float y, int flag);
+    void set_next_window_bg_alpha(float alpha);
+
+    bool begin(const std::string& name, int flags = 0);
+    void end();
+
+    bool input_double(const std::string& label, double& value, const std::string& format = "%.3f");
+
+    bool input_vec3(const std::string& label, Vec3d& value, float width, const std::string& format = "%.3f");
+
+private:
+    void create_device_objects();
+    void create_fonts_texture();
+    bool check_program(unsigned int handle, const char* desc);
+    bool check_shader(unsigned int handle, const char* desc);
+    void render_draw_data(ImDrawData* draw_data);
+    void destroy_device_objects();
+    void destroy_fonts_texture();
+};
+
+} // namespace GUI
+} // namespace Slic3r
+
+#endif // slic3r_ImGuiWrapper_hpp_
+