pulp::view::painters Namespace Reference

Classes
struct	KnobStyle
struct	FaderStyle
struct	RangeSliderStyle
struct	ToggleStyle
struct	WaveformStyle

Functions
void	paint_mod_ring_knob (canvas::Canvas &canvas, const Rect &rect, float value, const KnobStyle &style={})
	Draw a rotary knob whose active ring sweeps from start_angle_deg by value * sweep_deg, with a pointer line at the value angle.
void	paint_level_fader (canvas::Canvas &canvas, const Rect &rect, float value, const FaderStyle &style={})
	Draw a linear fader with a filled level bar and a thumb at value [0,1].
void	paint_range_slider (canvas::Canvas &canvas, const Rect &rect, float lo, float hi, const RangeSliderStyle &style={})
	Draw a two-thumb range slider spanning [lo, hi] (each [0,1], clamped, and lo <= hi enforced).
void	paint_toggle (canvas::Canvas &canvas, const Rect &rect, bool on, const ToggleStyle &style={})
	Draw a pill toggle.
void	paint_waveform (canvas::Canvas &canvas, const Rect &rect, const float *samples, std::size_t count, const WaveformStyle &style={})
	Draw count samples (each ~[-1,1]) as a polyline filling rect horizontally, centered vertically (sample +1 = top, -1 = bottom).

Function Documentation

paint_level_fader()

void pulp::view::painters::paint_level_fader	(	canvas::Canvas &	canvas,
		const Rect &	rect,
		float	value,
		const FaderStyle &	style = {} )

Draw a linear fader with a filled level bar and a thumb at value [0,1].

Vertical: value 0 = bottom, 1 = top; horizontal: 0 = left, 1 = right. The thumb rect (LAST fill_rounded_rect) tracks value along the travel axis.

paint_mod_ring_knob()

void pulp::view::painters::paint_mod_ring_knob	(	canvas::Canvas &	canvas,
		const Rect &	rect,
		float	value,
		const KnobStyle &	style = {} )

Draw a rotary knob whose active ring sweeps from start_angle_deg by value * sweep_deg, with a pointer line at the value angle.

value is [0,1] (clamped). Emits: the full track arc, the active value arc (LAST stroke_arc — its sweep scales with value), and the indicator line.

paint_range_slider()

void pulp::view::painters::paint_range_slider	(	canvas::Canvas &	canvas,
		const Rect &	rect,
		float	lo,
		float	hi,
		const RangeSliderStyle &	style = {} )

Draw a two-thumb range slider spanning [lo, hi] (each [0,1], clamped, and lo <= hi enforced).

Emits the track, a fill between the two thumb positions, and two thumb circles (first = lo, second = hi).

paint_toggle()

void pulp::view::painters::paint_toggle	(	canvas::Canvas &	canvas,
		const Rect &	rect,
		bool	on,
		const ToggleStyle &	style = {} )

Draw a pill toggle.

The knob (LAST fill_circle) sits at the left for off, the right for on; the track uses the on/off color.

paint_waveform()

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

Draw count samples (each ~[-1,1]) as a polyline filling rect horizontally, centered vertically (sample +1 = top, -1 = bottom).

Draws an optional center baseline. No-op if count < 2 or samples is null.