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Split calc_valp() into calc_valp() and calc_valp_log()

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gtk_dial_drag_gesture_begin() needs a linear calc_valp().
This commit is contained in:
Geoffrey D. Bennett
2023-12-04 21:45:13 +10:30
parent e506edc965
commit fef139be64
1 changed files with 6 additions and 1 deletions
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7
src/gtkdial.c
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@@ -140,6 +140,11 @@ static void dial_measure(GtkWidget *widget,
#define DRAG_FACTOR 0.5
static inline double calc_valp(double val, double mn, double mx)
{
return (val - mn)/(mx-mn);
}
static inline double calc_valp_log(double val, double mn, double mx)
{
if (val <= mn)
return 0.0;
@@ -195,7 +200,7 @@ static void get_dial_properties(GtkDial *dial,
double mn = dial->adj ? gtk_adjustment_get_lower(dial->adj) : 0;
double mx = dial->adj ? gtk_adjustment_get_upper(dial->adj) : 1;
double value = dial->adj ? gtk_adjustment_get_value(dial->adj) : 0.25;
props->valp = calc_valp(value, mn, mx);
props->valp = calc_valp_log(value, mn, mx);
double SIN = sin( (RAD_SE_DIFF2*(props->valp) ) );
double COS = cos( (RAD_SE_DIFF2*(props->valp) ) );