control_painters.hpp

Go to the documentation of this file.

#pragma once

 
#include <cstddef>
 
#include <pulp/canvas/canvas.hpp>
#include <pulp/view/geometry.hpp>
 
namespace pulp::view::painters {
 
// ── Mod-ring knob ────────────────────────────────────────────────────────────
 
struct KnobStyle {
    canvas::Color track{0.25f, 0.28f, 0.32f, 1.0f};   
    canvas::Color ring{0.08f, 0.72f, 0.65f, 1.0f};    
    canvas::Color indicator{0.92f, 0.94f, 0.96f, 1.0f};
    float start_angle_deg = 135.0f;   
    float sweep_deg = 270.0f;         
    float ring_width = 4.0f;
    float indicator_width = 2.5f;
    float radius_scale = 0.5f;        
    float indicator_inner_scale = 0.0f;
    float indicator_outer_scale = 0.0f;
    bool draw_track_and_fill = true;
    bool draw_indicator = true;
};

void paint_mod_ring_knob(canvas::Canvas& canvas, const Rect& rect, float value,
                         const KnobStyle& style = {});
 
// ── Level fader ──────────────────────────────────────────────────────────────
 
struct FaderStyle {
    bool horizontal = false;          
    canvas::Color track{0.20f, 0.22f, 0.26f, 1.0f};
    canvas::Color fill{0.08f, 0.72f, 0.65f, 1.0f};    
    canvas::Color thumb{0.92f, 0.94f, 0.96f, 1.0f};
    float track_thickness = 6.0f;
    float thumb_length = 14.0f;        
    float corner_radius = 3.0f;
};

void paint_level_fader(canvas::Canvas& canvas, const Rect& rect, float value,
                       const FaderStyle& style = {});
 
// ── Bipolar dual-thumb range slider ──────────────────────────────────────────
 
struct RangeSliderStyle {
    bool horizontal = true;
    canvas::Color track{0.20f, 0.22f, 0.26f, 1.0f};
    canvas::Color fill{0.08f, 0.72f, 0.65f, 1.0f};    
    canvas::Color thumb{0.92f, 0.94f, 0.96f, 1.0f};
    float track_thickness = 6.0f;
    float thumb_radius = 7.0f;
};

void paint_range_slider(canvas::Canvas& canvas, const Rect& rect,
                        float lo, float hi, const RangeSliderStyle& style = {});
 
// ── Toggle switch ─────────────────────────────────────────────────────────────
 
struct ToggleStyle {
    canvas::Color track_off{0.24f, 0.26f, 0.30f, 1.0f};
    canvas::Color track_on{0.08f, 0.72f, 0.65f, 1.0f};
    canvas::Color knob{0.96f, 0.97f, 0.98f, 1.0f};
    float knob_inset = 2.0f;
};

void paint_toggle(canvas::Canvas& canvas, const Rect& rect, bool on,
                  const ToggleStyle& style = {});
 
// ── Waveform ──────────────────────────────────────────────────────────────────
 
struct WaveformStyle {
    canvas::Color line{0.08f, 0.72f, 0.65f, 1.0f};
    canvas::Color baseline{0.30f, 0.33f, 0.38f, 1.0f};
    float line_width = 1.5f;
    bool draw_baseline = true;
};

void paint_waveform(canvas::Canvas& canvas, const Rect& rect,
                    const float* samples, std::size_t count,
                    const WaveformStyle& style = {});
 
}  // namespace pulp::view::painters