Don't use G_DEFINE_TYPE anymore, to be pre-gtk+2.24 compatible. Middle click resets knob to 0.0.
This commit is contained in:
Nick Lanham
parent
e4de7f2924
commit
9b90186994
113
nknob.c
113
nknob.c
@ -6,6 +6,10 @@
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* over a GtkRange (i.e. it can be used exactly like a
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* GtkRange from the outside)
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*
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* In addition, this knob makes the drmr_ui.so module memory resident
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* so it can avoid attempting to re-load itself when shown/hidden in
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* a ui.
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*
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* From PhatKnob code:
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* Most of this code comes from gAlan 0.2.0, copyright (C) 1999
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* Tony Garnock-Jones, with modifications by Sean Bolton,
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@ -84,11 +88,38 @@ static void n_knob_get_property (GObject *object,
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GError *gerror;
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/* global pixbufs for less mem usage */
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GdkPixbuf **pixbuf = NULL;
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static GdkPixbuf **pixbuf = NULL;
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/* Local data */
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// Can't use G_DEFINE_TYPE because ardour is at gtk 2.22
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static NKnobClass *parent_class;
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GType
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n_knob_get_type (void) {
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static GType nknob_type;
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if (!nknob_type) {
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// We need to make ourselves memory resident so our type won't get unloaded
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// when the window is shown/hiddent
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GModule *module_self = g_module_open (INSTALL_DIR"/drmr.lv2/drmr_ui.so", 0);
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if (!module_self)
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g_print ("error (segfault eminent): %s\n", g_module_error ());
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else
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g_module_make_resident(module_self);
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G_DEFINE_TYPE (NKnob, n_knob, GTK_TYPE_RANGE);
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static const GTypeInfo object_info = {
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sizeof (NKnobClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) n_knob_class_init,
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(GClassFinalizeFunc) NULL,
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NULL, // class data
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sizeof (NKnob),
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0, // preallocs
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(GInstanceInitFunc) n_knob_init,
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NULL // value table
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};
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nknob_type = g_type_register_static(GTK_TYPE_RANGE,"NKnob",&object_info,0);
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}
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return nknob_type;
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}
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static void n_knob_class_init (NKnobClass *klass) {
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GtkObjectClass *object_class;
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@ -98,6 +129,8 @@ static void n_knob_class_init (NKnobClass *klass) {
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object_class = GTK_OBJECT_CLASS(klass);
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widget_class = GTK_WIDGET_CLASS(klass);
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g_object_class = G_OBJECT_CLASS(klass);
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parent_class = g_type_class_peek_parent (klass);
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g_object_class->set_property = n_knob_set_property;
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g_object_class->get_property = n_knob_get_property;
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@ -172,8 +205,8 @@ GtkWidget *n_knob_new(GtkAdjustment *adjustment) {
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* Returns: a newly created #NKnob
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*
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*/
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GtkWidget* n_knob_new_with_range (double value, double lower,
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double upper, double step) {
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GtkWidget* n_knob_new_with_range (gdouble value, gdouble lower,
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gdouble upper, gdouble step) {
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GtkAdjustment* adj;
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adj = (GtkAdjustment*) gtk_adjustment_new (value, lower, upper, step, step, 0);
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return n_knob_new (adj);
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@ -181,28 +214,15 @@ GtkWidget* n_knob_new_with_range (double value, double lower,
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static void n_knob_destroy(GtkObject *object) {
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NKnob *knob;
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g_return_if_fail(object != NULL);
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g_return_if_fail(N_IS_KNOB(object));
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knob = N_KNOB(object);
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knob->pixbuf = NULL;
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if (knob->mask) {
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gdk_bitmap_unref(knob->mask);
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knob->mask = NULL;
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}
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if (knob->mask_gc) {
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gdk_gc_unref(knob->mask_gc);
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knob->mask_gc = NULL;
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}
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if (knob->red_gc) {
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gdk_gc_unref(knob->red_gc);
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knob->red_gc = NULL;
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}
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if (GTK_OBJECT_CLASS(n_knob_parent_class)->destroy)
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(*GTK_OBJECT_CLASS(n_knob_parent_class)->destroy)(object);
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if (GTK_OBJECT_CLASS(parent_class)->destroy)
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(*GTK_OBJECT_CLASS(parent_class)->destroy)(object);
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}
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@ -214,8 +234,8 @@ static void n_knob_realize(GtkWidget *widget) {
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g_return_if_fail(widget != NULL);
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g_return_if_fail(N_IS_KNOB(widget));
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if (GTK_WIDGET_CLASS(n_knob_parent_class)->realize)
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(*GTK_WIDGET_CLASS(n_knob_parent_class)->realize)(widget);
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if (GTK_WIDGET_CLASS(parent_class)->realize)
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(*GTK_WIDGET_CLASS(parent_class)->realize)(widget);
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knob = N_KNOB(widget);
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@ -297,7 +317,7 @@ static gint n_knob_button_press(GtkWidget *widget, GdkEventButton *event) {
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case STATE_IDLE:
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switch (event->button) {
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case 1:
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case 2:
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case 3:
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gtk_grab_add(widget);
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knob->state = STATE_PRESSED;
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knob->saved_x = event->x;
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@ -317,49 +337,32 @@ static gint n_knob_button_press(GtkWidget *widget, GdkEventButton *event) {
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static gint n_knob_button_release(GtkWidget *widget, GdkEventButton *event) {
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NKnob *knob;
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GtkRange *range;
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GtkAdjustment *adj;
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g_return_val_if_fail(widget != NULL, FALSE);
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g_return_val_if_fail(N_IS_KNOB(widget), FALSE);
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g_return_val_if_fail(event != NULL, FALSE);
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knob = N_KNOB(widget);
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range = GTK_RANGE(knob);
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adj = gtk_range_get_adjustment(range);
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switch (knob->state) {
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case STATE_PRESSED:
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gtk_grab_remove(widget);
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knob->state = STATE_IDLE;
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switch (event->button) {
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case 1:
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gtk_range_set_value(range,
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gtk_range_get_value(range)+
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gtk_adjustment_get_page_increment(adj));
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break;
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switch (event->button) {
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case 1:
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case 3:
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switch (knob->state) {
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case STATE_PRESSED:
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gtk_grab_remove(widget);
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knob->state = STATE_IDLE;
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case STATE_DRAGGING:
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gtk_grab_remove(widget);
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knob->state = STATE_IDLE;
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case 3:
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gtk_range_set_value(range,
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gtk_range_get_value(range)-
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gtk_adjustment_get_page_increment(adj));
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break;
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default:
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break;
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}
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break;
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case STATE_DRAGGING:
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gtk_grab_remove(widget);
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knob->state = STATE_IDLE;
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break;
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default:
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break;
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case 2: {
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gtk_range_set_value(GTK_RANGE(knob),0.0);
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}
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}
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return FALSE;
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14
nknob.h
14
nknob.h
@ -27,18 +27,23 @@
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*/
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#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#ifndef __NKNOB_H__
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#define __NKNOB_H__
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#include <gdk/gdk.h>
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#include <gtk/gtkrange.h>
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G_BEGIN_DECLS
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#define N_TYPE_KNOB (n_knob_get_type ( ))
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#define N_KNOB(obj) GTK_CHECK_CAST(obj, n_knob_get_type(), NKnob)
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#define N_KNOB_CLASS(klass) GTK_CHECK_CLASS_CAST(klass, n_knob_get_type(), NKnobClass)
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#define N_IS_KNOB(obj) GTK_CHECK_TYPE(obj, n_knob_get_type())
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#define N_TYPE_KNOB (n_knob_get_type ( ))
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#define N_IS_KNOB_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), N_TYPE_KNOB))
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#define N_KNOB_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), N_TYPE_KNOB, NKnobClass))
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typedef struct _NKnob NKnob;
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@ -56,16 +61,13 @@ struct _NKnob {
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/* Pixmap for knob */
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GdkPixbuf *pixbuf;
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GdkBitmap *mask;
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GdkGC *mask_gc;
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GdkGC *red_gc;
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};
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struct _NKnobClass {
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GtkRangeClass parent_class;
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};
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GType n_knob_get_type ( );
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GType n_knob_get_type ( ) G_GNUC_CONST;
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GtkWidget* n_knob_new (GtkAdjustment* adjustment);
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