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// 11 june 2015
#include "uipriv_unix.h"
struct uiSlider {
uiUnixControl c;
GtkWidget *widget;
GtkRange *range;
GtkScale *scale;
void (*onChanged)(uiSlider *, void *);
void *onChangedData;
gulong onChangedSignal;
};
uiUnixControlAllDefaults(uiSlider)
static void onChanged(GtkRange *range, gpointer data)
{
uiSlider *s = uiSlider(data);
(*(s->onChanged))(s, s->onChangedData);
}
static void defaultOnChanged(uiSlider *s, void *data)
{
// do nothing
}
int uiSliderValue(uiSlider *s)
{
return gtk_range_get_value(s->range);
}
void uiSliderSetValue(uiSlider *s, int value)
{
// we need to inhibit sending of ::value-changed because this WILL send a ::value-changed otherwise
g_signal_handler_block(s->range, s->onChangedSignal);
gtk_range_set_value(s->range, value);
g_signal_handler_unblock(s->range, s->onChangedSignal);
}
void uiSliderOnChanged(uiSlider *s, void (*f)(uiSlider *, void *), void *data)
{
s->onChanged = f;
s->onChangedData = data;
}
uiSlider *uiNewSlider(int min, int max)
{
uiSlider *s;
int temp;
if (min >= max) {
temp = min;
min = max;
max = temp;
}
uiUnixNewControl(uiSlider, s);
s->widget = gtk_scale_new_with_range(GTK_ORIENTATION_HORIZONTAL, min, max, 1);
s->range = GTK_RANGE(s->widget);
s->scale = GTK_SCALE(s->widget);
// ensure integers, just to be safe
gtk_scale_set_digits(s->scale, 0);
s->onChangedSignal = g_signal_connect(s->scale, "value-changed", G_CALLBACK(onChanged), s);
uiSliderOnChanged(s, defaultOnChanged, NULL);
return s;
}
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