ui.h

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#pragma once
 
#include "dear_imgui/imgui.h"
 
#include "eu/imgui/scurve.h"
 
namespace eu::render
{
struct FrameBuffer;
}
 
namespace eu::imgui
{
 
struct ImguiShaderProgram
{
    unsigned int program_handle = 0;
    int texture_attrib = 0;
    int projection_attrib = 0;
};
 
struct ImguiShaderCache
{
    ImguiShaderCache();
    ~ImguiShaderCache();
 
    ImguiShaderCache(const ImguiShaderCache&) = delete;
    ImguiShaderCache(ImguiShaderCache&&) = delete;
    ImguiShaderCache& operator=(const ImguiShaderCache&) = delete;
    ImguiShaderCache& operator=(ImguiShaderCache&&) = delete;
 
    ImguiShaderProgram linear_to_gamma_shader;
    ImguiShaderProgram depth_ortho_shader;
};
 
enum class ImageShader
{
    none,
    tonemap_and_gamma,
    depth_ortho
};
 
void setup_colors();
 
void label(const char* label);
bool button(const char* label);
bool centered_button(const char* label);
 
bool header(const char* label, bool* closeable = nullptr);
 
void imgui_text(const std::string& str);
 
bool imgui_edit(const char* label, std::string* str);
 
void imgui_readonly(const char* label, const std::string& text);
void imgui_readonly(const char* label, const v3& v);
void imgui_readonly(const char* label, const Ypr& y);
 
void imgui_image(const char* name, const render::FrameBuffer& img, ImguiShaderCache* cache, ImageShader shader);
// bool simple_gamma_slider(const char* label, float* gamma, float curve = 1.5f, float min_gamma = 1.6f, float max_gamma = 2.8f);
 
// bool drag(const char* label, v3* drag);
// bool drag(const char* label, Ypr* drag);
 
// bool gear(const char* label, v3* drag);
// bool gear(const char* label, Rui* drag);
// bool gear(const char* label, Ypr* drag);
 
void transform(const m4& m);
bool transform(m4* m);
 
struct PropTable
{
    PropTable(const PropTable&) = delete;
    void operator=(const PropTable&) = delete;
    void operator=(const PropTable&&) = delete;
 
    PropTable(PropTable&& r) noexcept;
 
    constexpr operator bool() const { return started; }
 
    static PropTable begin(const char* label = "properties");
    ~PropTable();
    
    bool check(const char* label, bool* v) const;
    bool slider(const char* label, float* v, float min, float max) const;
    bool slider(const char* label, float* v) const;
    void text(const char* label, const std::string& str) const;
    bool edit(const char* label, std::string* str) const;
 
    void display(const char* label, bool b) const;
    void readonly(const char* label, const std::string& text) const;
    void readonly(const char* label, const eu::v3& v) const;
    void readonly(const char* label, const eu::Ypr& y) const;
    bool color(const char* label, Rgb* color) const;
    bool simple_gamma_slider(const char* label, float* gamma, float curve = 1.5f, float min_gamma = 1.6f, float max_gamma = 2.8f) const;
    bool drag(const char* label, eu::v3* drag) const;
    bool drag(const char* label, eu::Ypr* drag) const;
    bool drag(const char* label, float* drag, float speed = 1.0f) const;
    bool drag(const char* label, int* drag) const;
    bool gear(const char* label, eu::v3* drag) const;
    bool gear(const char* label, eu::Rui* drag) const;
    bool gear(const char* label, eu::Ypr* drag) const;
    void transform(const eu::m4& m) const;
    bool transform(eu::m4* m) const;
    bool scurve(const char* label, eu::core::SCurve* scurve, eu::imgui::SCurveGuiState* gui, eu::imgui::FlipX flip_x, const eu::imgui::SCurveImguiSettings& settings, bool force_init_curve) const;
 
    void image(const char* label, const render::FrameBuffer& img, ImguiShaderCache* cache, ImageShader shader) const;
private:
    bool started;
 
    PropTable() = default;
    explicit PropTable(bool b);
};
 
 
}