njin_ui.h

#pragma once
#include "_math.h"
#include "_types.h"
#include <initializer_list>
#include <span>
#include <string>
 
namespace njin {
struct context;


struct ui_skin {
  texture_handle texture{};          
  rect source{};                     
  f32 border = 0.0f;                 
  rgba color{1.0f, 1.0f, 1.0f, 1.0f}; 
  f32 roundness = 0.0f;              
  rgba outline{0.0f, 0.0f, 0.0f, 0.0f}; 
  f32 outline_width = 0.0f;          
};

struct ui_look {
  ui_skin normal{};   
  ui_skin focused{};  
  ui_skin pressed{};  
  ui_skin disabled{}; 
  rgba text{1.0f, 1.0f, 1.0f, 1.0f};          
  rgba text_focused{1.0f, 1.0f, 1.0f, 1.0f};  
  rgba text_disabled{0.5f, 0.5f, 0.5f, 1.0f}; 
  shader_handle shader{}; 
};

struct ui_style {
  font_handle font{};    
  f32 font_size = 26.0f; 
  f32 scale = 1.0f;      
  f32 padding = 18.0f;   
  f32 spacing = 10.0f;   
  f32 widget_height = 46.0f; 
  f32 width = 380.0f;    
 
  ui_look panel{};  
  ui_look label{};  
  ui_look button{}; 
  ui_look track{};  
  ui_look fill{};   
  ui_look knob{};   
  ui_look toast{};  

  rgba dim{0.0f, 0.0f, 0.0f, 0.6f};
  rgba toast_accent[4] = {{0.26f, 0.56f, 0.98f, 1.0f}, {0.25f, 0.75f, 0.42f, 1.0f},
                          {0.96f, 0.72f, 0.20f, 1.0f}, {0.92f, 0.32f, 0.34f, 1.0f}};

  vec2 toast_anchor{1.0f, 1.0f};
  vec2 toast_margin{24.0f, 24.0f}; 
  f32 toast_seconds = 2.5f;        
  i32 toast_max = 5;               
  f32 toast_width = 420.0f;        
 
  sound_handle sound_move{};   
  sound_handle sound_accept{}; 
  sound_handle sound_back{};   
};

ui_style ui_default_style();

void ui_style_set(context &ctx, const ui_style &style);

ui_style ui_style_get(const context &ctx);

struct ui_panel_desc {
  const char *id = "panel";
  const char *title = nullptr;
  vec2 anchor{0.5f, 0.5f};
  vec2 pivot{0.5f, 0.5f};
  vec2 offset{};          
  f32 width = 0.0f;       
  bool background = true; 
  bool navigable = true;
};

void ui_begin(context &ctx, const ui_panel_desc &desc = {});

void ui_end(context &ctx);

void ui_row(context &ctx, i32 columns);

void ui_label(context &ctx, const char *text);

void ui_space(context &ctx, f32 height);

bool ui_button(context &ctx, const char *label, bool enabled = true);

bool ui_toggle(context &ctx, const char *label, bool &value);

bool ui_slider(context &ctx, const char *label, f32 &value, f32 min, f32 max,
               f32 step = 0.0f, bool percent = false);

bool ui_choice(context &ctx, const char *label, i32 &index,
               std::initializer_list<const char *> options);

bool ui_choice(context &ctx, const char *label, i32 &index,
               std::span<const std::string> options);

void ui_progress(context &ctx, f32 value, const char *text = nullptr);

struct ui_circle_desc {
  f32 value = 0.0f;       
  f32 diameter = 96.0f;   
  f32 thickness = 10.0f;  
  f32 start_angle = 0.0f;
  bool clockwise = true;   
  bool round_caps = false; 
  bool show_track = true;  
  rgba track{0.0f, 0.0f, 0.0f, 0.0f}; 
  rgba fill{0.0f, 0.0f, 0.0f, 0.0f};  
  const char *text = nullptr;         
  bool percent = false;               
  rgba text_color{0.0f, 0.0f, 0.0f, 0.0f}; 
};

void ui_progress_circle(context &ctx, const ui_circle_desc &desc);

void ui_image(context &ctx, texture_handle texture, vec2 size, rect source = {});

bool ui_keybind(context &ctx, const char *label, action_handle action, bool pad = false);

bool ui_keybind_listening(const context &ctx);

bool ui_back(context &ctx);

void ui_focus(context &ctx, const char *label);

bool ui_active(const context &ctx);

rect ui_last_rect(const context &ctx);

bool ui_mouse_over(const context &ctx);

enum ui_toast_kind {
  ui_toast_info,    
  ui_toast_success, 
  ui_toast_warning, 
  ui_toast_error,   
};

struct ui_toast_desc {
  ui_toast_kind kind = ui_toast_info; 
  f32 seconds = 0.0f; 
};

void ui_toast(context &ctx, const char *text, const ui_toast_desc &desc = {});

void ui_toast_clear(context &ctx);

struct ui_popup_desc {
  const char *id = "popup";     
  const char *title = nullptr;  
  const char *message = nullptr; 
  const char *buttons[4] = {"OK", nullptr, nullptr, nullptr};
  i32 default_button = 0; 
  i32 cancel_button = -1;
  f32 width = 0.0f; 
};

i32 ui_popup(context &ctx, const ui_popup_desc &desc, bool &open);

void ui_popup_begin(context &ctx, const ui_popup_desc &desc);

void ui_popup_end(context &ctx);
} // namespace njin