GUI.h

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#pragma once
#include <venom/common/plugin/graphics/GraphicsPluginObject.h>
 
#include <venom/common/math/Matrix.h>
#include <venom/common/plugin/graphics/GUI_Enum.h>
 
namespace venom
{
namespace common
{
class GraphicsApplication;
 
typedef void(*GUIDrawCallback)();
class VENOM_COMMON_API GUI : public GraphicsPluginObject
{
public:
    GUI();
    ~GUI() override;
 
    void SetGraphicsApplication(GraphicsApplication * app);
 
    virtual vc::Error Initialize() = 0;
    virtual vc::Error Reset() = 0;
 
    inline void DrawCallback() { if (s_guiDrawCallback) s_guiDrawCallback(); }
    static inline void SetGUIDrawCallback(GUIDrawCallback guiDrawCallback) { s_guiDrawCallback = guiDrawCallback; }
 
    inline void Render() { DrawCallback(); s_gui->_Render(); }
 
    static inline GUI * Get() { return s_gui; }
 
    static inline void NewFrame() { s_gui->_NewFrame(); }
    static inline void Begin(const char * name, bool * p_open = nullptr, GUIWindowFlags flags = 0) { s_gui->_Begin(name, p_open, flags); }
    static inline void End() { s_gui->_End(); }
    static inline void Text(const char* fmt, ...) { va_list args; va_start(args, fmt); s_gui->_Text(fmt, args); va_end(args); }
    static inline void TextColored(const vcm::Vec4 & col, const char* fmt, ...) { va_list args; va_start(args, fmt); s_gui->_TextColored(col, fmt, args); va_end(args); }
    static inline void LabelText(const char* label, const char* fmt, ...) { va_list args; va_start(args, fmt); s_gui->_LabelText(label, fmt, args); va_end(args); }
 
    static inline bool SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format = "%.3f", float power = 1.0f) { return s_gui->_SliderFloat(label, v, v_min, v_max, format, power); }
    static inline bool SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f) { return s_gui->_SliderFloat3(label, v, v_min, v_max, format, power); }
 
    static inline void ColorEdit3(const char* label, float col[3], GUIColorEditFlags flags = 0) { s_gui->_ColorEdit3(label, col, flags); }
 
    static inline bool Button(const char* label, const vcm::Vec2 & size = vcm::Vec2(0, 0)) { return s_gui->_Button(label, size); }
    static inline bool Checkbox(const char* label, bool* v) { return s_gui->_Checkbox(label, v); }
    static inline void ProgressBar(float fraction, const vcm::Vec2 & size_arg = vcm::Vec2(-1, 0), const char* overlay = nullptr) { s_gui->_ProgressBar(fraction, size_arg, overlay); }
 
    static inline bool Selectable(const char* label, bool selected, GUISelectableFlags flags = 0, const vcm::Vec2 & size = vcm::Vec2(0, 0)) { return s_gui->_Selectable(label, selected, flags, size); }
 
    static inline bool BeginCombo(const char* label, const char* preview_value, GUIComboFlags flags = 0) { return s_gui->_BeginCombo(label, preview_value, flags); }
    static inline void EndCombo() { s_gui->_EndCombo(); }
 
    static inline void SetItemDefaultFocus() { s_gui->_SetItemDefaultFocus(); }
 
    static inline void SameLine(float offset_from_start_x = 0.0f, float spacing = -1.0f) { s_gui->_SameLine(offset_from_start_x, spacing); }
 
protected:
    virtual void _NewFrame() = 0;
    virtual void _Begin(const char * name, bool * p_open, GUIWindowFlags flags) = 0;
    virtual void _End() = 0;
    virtual void _Text(const char* fmt, ...) = 0;
    virtual void _TextColored(const vcm::Vec4 & col, const char* fmt, ...) = 0;
    virtual void _LabelText(const char* label, const char* fmt, ...) = 0;
 
    virtual bool _SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power) = 0;
    virtual bool _SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power) = 0;
 
    virtual void _ColorEdit3(const char* label, float col[3], GUIColorEditFlags flags) = 0;
 
    virtual bool _Button(const char* label, const vcm::Vec2 & size) = 0;
    virtual bool _Checkbox(const char* label, bool* v) = 0;
    virtual void _ProgressBar(float fraction, const vcm::Vec2 & size_arg, const char* overlay) = 0;
 
    virtual bool _Selectable(const char* label, bool selected, GUISelectableFlags flags, const vcm::Vec2 & size) = 0;
 
    virtual bool _BeginCombo(const char* label, const char* preview_value, GUIComboFlags flags) = 0;
    virtual void _EndCombo() = 0;
 
    virtual void _SetItemDefaultFocus() = 0;
 
    virtual void _SameLine(float offset_from_start_x, float spacing) = 0;
 
    virtual void _Render() = 0;
 
protected:
    GraphicsApplication * _app;
 
private:
    static GUI * s_gui;
 
private:
    static GUIDrawCallback s_guiDrawCallback;
};
}
}