xtuner_private.c File Reference

#include "xtuner_private.h"

Include dependency graph for xtuner_private.c:

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Functions
void	_draw_tuner (void *w_, void *user_data)
	_draw_tuner - draw the tuner on expose call More...

Function Documentation

_draw_tuner()

void _draw_tuner	(	void *	w_,
		void *	user_data
	)

_draw_tuner - draw the tuner on expose call

Parameters

*w_	- The Widget_t contain the tuner
*user_data	- attached user_data

Returns

void

Definition at line 69 of file xtuner_private.c.

                                            {
    Widget_t *w = (Widget_t*)w_;
    if (!w) return;
    XTuner *xt = (XTuner *)w->parent_struct;
    XWindowAttributes attrs;
    XGetWindowAttributes(w->app->dpy, (Window)w->widget, &attrs);
    if (attrs.map_state != IsViewable) return;
    int width = attrs.width;
    int height = attrs.height;
    float x0 = width/2;
    float y0 = height/2;
 
    use_bg_color_scheme(w, NORMAL_);
    cairo_paint (w->crb);
 
    cairo_set_source_rgb(w->crb,0.2,0.2,0.2);
    _tuner_triangle(w, width/5.8,y0 , 25/w->scale.ascale, 20/w->scale.ascale);
    _tuner_triangle(w, width/1.2, y0, -25/w->scale.ascale, 20/w->scale.ascale);
 
    float value = adj_get_value(w->adj);
    float scale = -0.5;
 
    float fvis = _get_tuner_temperament(w) * (log2f(value/xt->ref_freq) + 4);
    float fvisr = round(fvis);
    int vis = fvisr;
    int indicate_oc = round((fvisr+xt->temp_adjust)/_get_tuner_temperament(w));
    const int octsz = sizeof(octave) / sizeof(octave[0]);
    if (indicate_oc < 0 || indicate_oc >= octsz) {
        // just safety, should not happen with current parameters
        // (pitch tracker output 23 .. 999 Hz)
        indicate_oc = octsz - 1;
    }
 
    scale = (fvis-vis) / 2;
    vis = vis % _get_tuner_temperament(w);
    if (vis < 0) {
        vis += _get_tuner_temperament(w);
    }
    
    if (value > 24.0 && value < 999.0) {
        if (scale < 0.003) {
            cairo_set_source_rgb(w->crb,0.80,0.79,0.01);
            _tuner_triangle(w, (width/5.8),y0 , 25/w->scale.ascale, 20/w->scale.ascale);
            _tuner_triangle(w, (width/5.8)-(140*scale)/w->scale.ascale,y0 , 25/w->scale.ascale, 20/w->scale.ascale);
            _tuner_triangle(w, (width/5.8)-(280*scale)/w->scale.ascale,y0 , 25/w->scale.ascale, 20/w->scale.ascale);
        }
        if (scale > -0.003) {
            cairo_set_source_rgb(w->crb,0.80,0.79,0.01);
            _tuner_triangle(w, (width/1.2), y0, -25/w->scale.ascale, 20/w->scale.ascale);
            _tuner_triangle(w, (width/1.2)-(140*scale)/w->scale.ascale, y0, -25/w->scale.ascale, 20/w->scale.ascale);
            _tuner_triangle(w, (width/1.2)-(280*scale)/w->scale.ascale, y0, -25/w->scale.ascale, 20/w->scale.ascale);
        }
    }
    // display note
    cairo_set_source_rgba(w->crb, fabsf(scale)*2, 1-(scale*scale*4), 0.2,1-(fabsf(scale)*2));
    cairo_set_font_size(w->crb, (w->app->big_font*2)/w->scale.ascale);
    cairo_text_extents_t extents;
    cairo_text_extents(w->crb,_get_note_set(w)[vis] , &extents);
 
    if (value > 24.0 && value < 999.0) {
        float c = (extents.width/2)+10.0;
        cairo_move_to(w->crb,x0-c , y0 );
        cairo_show_text(w->crb, _get_note_set(w)[vis]);
        cairo_set_font_size(w->crb, (w->app->small_font*2)/w->scale.ascale);
        cairo_move_to(w->crb,x0+c-10.0, y0+ extents.height/2 );
        cairo_show_text(w->crb, octave[indicate_oc]);
 
        char s[64];
        const char* format[] = {"%.1f Hz", "%.2f Hz", "%.3f Hz"};
        snprintf(s, 63, format[2-1], value);
        use_text_color_scheme(w, NORMAL_);
        cairo_set_font_size (w->crb, w->app->normal_font/w->scale.ascale);
        cairo_text_extents(w->crb,s , &extents);
        cairo_move_to (w->crb, width/1.2-extents.width/2, height-extents.height );
        cairo_show_text(w->crb, s);
    }
}

References Widget_t::app, Widget_t::crb, Xputty::dpy, NORMAL_, Widget_t::parent_struct, use_bg_color_scheme(), and Widget_t::widget.