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