85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
// 11 june 2015
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#include "uipriv_unix.h"
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struct slider {
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uiSlider s;
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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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uiDefineControlType(uiSlider, uiTypeSlider, struct slider)
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static void onChanged(GtkRange *range, gpointer data)
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{
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struct slider *s = (struct slider *) data;
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(*(s->onChanged))(uiSlider(s), s->onChangedData);
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}
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static uintptr_t sliderHandle(uiControl *c)
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{
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struct slider *s = (struct slider *) c;
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return (uintptr_t) (s->widget);
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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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static intmax_t sliderValue(uiSlider *ss)
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{
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struct slider *s = (struct slider *) ss;
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return (intmax_t) gtk_range_get_value(s->range);
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}
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static void sliderSetValue(uiSlider *ss, intmax_t value)
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{
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struct slider *s = (struct slider *) ss;
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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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static void sliderOnChanged(uiSlider *ss, void (*f)(uiSlider *, void *), void *data)
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{
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struct slider *s = (struct slider *) ss;
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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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struct slider *s;
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s = (struct slider *) uiNewControl(uiTypeSlider());
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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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uiUnixMakeSingleWidgetControl(uiControl(s), s->widget);
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// TODO needed?
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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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s->onChanged = defaultOnChanged;
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uiControl(s)->Handle = sliderHandle;
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uiSlider(s)->Value = sliderValue;
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uiSlider(s)->SetValue = sliderSetValue;
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uiSlider(s)->OnChanged = sliderOnChanged;
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return uiSlider(s);
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}
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