Synchroniser 2 widgets

Hello la team Gtk

je voudrais synchroniser 2 widgets voici le code de mon test

Code:

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#include <gtk/gtk.h>   //gtk-sync-sample_moi.c /* Compile with:  *  * gcc -std=c11 -Wall -fmax-errors=10 -Wextra gtk-sync-sample_moi.c -o gtk-sync-sample_moi `pkg-config --cflags --libs gtk+-3.0`  */   void cb_quit (GtkWidget *widget, gpointer user_data) { gtk_main_quit(); /* parametres inutilises */ (void)widget; (void)user_data; } void cb_spin_button (GtkWidget *spin_button, gpointer range) { g_print(" j'appelle le callback du spin bouton pour changer le scale \n"); gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_button), gtk_range_get_value (GTK_RANGE(range))); } void cb_scale (GtkWidget *scale, gpointer spin_button) { g_print(" j'appelle le callback du scale pour changer le spin bouton \n"); gtk_range_set_value (GTK_RANGE(scale), gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_button))); }   static void do_activate (GtkApplication *app, gpointer data) { /* Create a window with a title, and a default size */ GtkWidget *window = gtk_application_window_new (app);   /* Creation du conteneur principal */ GtkWidget *main_box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0); gtk_container_add (GTK_CONTAINER (window), main_box);   /* taille minimum */ gtk_window_set_default_size (GTK_WINDOW (window), 500, 200);   /*création d'une bordure interne à la fenêtre window*/ gtk_container_set_border_width (GTK_CONTAINER (window), 10); gtk_window_set_title (GTK_WINDOW (window),"test de synchro entre 2 widgets");   g_signal_connect (window, "delete_event",G_CALLBACK (cb_quit), NULL);   GtkWidget * spin_button = gtk_spin_button_new_with_range(1, 130,2);   GtkWidget * scale = gtk_scale_new_with_range(GTK_ORIENTATION_HORIZONTAL,0,130,2); int expand = TRUE ; int fill = TRUE; int padding =1;   gtk_box_pack_start (GTK_BOX (main_box), spin_button, !expand, fill, padding); GtkWidget * Separator = gtk_separator_new(GTK_ORIENTATION_VERTICAL); gtk_box_pack_start (GTK_BOX (main_box), Separator, FALSE, FALSE, 0); gtk_box_pack_start (GTK_BOX (main_box), scale, expand, fill, padding);   gint value = 75; GtkAdjustment * adjustement_scale = gtk_adjustment_new ( value,1, 130,2,0,0); GtkAdjustment * adjustement_button = gtk_adjustment_new ( value,1, 130,2,0,0);   gtk_range_set_adjustment (GTK_RANGE(scale),adjustement_scale); gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON(spin_button), adjustement_button);   g_signal_connect (scale, "value-changed", G_CALLBACK (cb_scale), spin_button); g_signal_connect (spin_button, "value-changed", G_CALLBACK (cb_spin_button), scale);   /* Affichage de la fenetre principale */ gtk_widget_show_all (window); /* parametres inutilises */ (void)data; }   int main (int argc, char **argv) { GtkApplication *app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE); g_signal_connect (app, "activate", G_CALLBACK (do_activate), NULL);   int status = g_application_run (G_APPLICATION (app), argc, argv); g_object_unref (app); return status; }

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A l’exécution du code les 2 widgets se synchronisent sur la valeur 75, c'est normal mais en fait ils sont verrouillés l'un sur l'autre. Le signal value-changed semble capté par les 2 widgets. Impossible de changer la valeur en bougeant les widgets.:oops:

En Vala et gtk il existe un exemple que j'ai voulu transposer en C:mouarf:

Code:

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using Gtk; // valac --pkg gtk+-3.0 gtk-sync-sample.vala   // pour compiler en C valac --pkg gtk+-3.0 -C gtk-sync-sample.vala   public class SyncSample : Window {   private SpinButton spin_box; private Scale slider;   public SyncSample () { this.title = "Enter your age"; this.window_position = WindowPosition.CENTER; this.destroy.connect (Gtk.main_quit); set_default_size (300, 20);   spin_box = new SpinButton.with_range (0, 130, 1); slider = new Scale.with_range (Orientation.HORIZONTAL, 0, 130, 1); spin_box.adjustment.value_changed.connect (() => { slider.adjustment.value = spin_box.adjustment.value; }); slider.adjustment.value_changed.connect (() => { spin_box.adjustment.value = slider.adjustment.value; }); spin_box.adjustment.value = 35;   var hbox = new Box (Orientation.HORIZONTAL, 5); hbox.homogeneous = true; hbox.add (spin_box); hbox.add (slider); add (hbox); }   public static int main (string[] args) { Gtk.init (ref args);   var window = new SyncSample (); window.show_all ();   Gtk.main (); return 0; } }

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une compilation du code vala en C intermédiaire ne m'éclaire pas plus cf ci dessous:weird::roll:

Code:

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/* gtk-sync-sample.c generated by valac 0.40.8, the Vala compiler  * generated from gtk-sync-sample.vala, do not modify */       #include <glib.h> #include <glib-object.h> #include <gtk/gtk.h> #include <float.h> #include <math.h> #include <stdlib.h> #include <string.h>     #define TYPE_SYNC_SAMPLE (sync_sample_get_type ()) #define SYNC_SAMPLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_SYNC_SAMPLE, SyncSample)) #define SYNC_SAMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TYPE_SYNC_SAMPLE, SyncSampleClass)) #define IS_SYNC_SAMPLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_SYNC_SAMPLE)) #define IS_SYNC_SAMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TYPE_SYNC_SAMPLE)) #define SYNC_SAMPLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TYPE_SYNC_SAMPLE, SyncSampleClass))   typedef struct _SyncSample SyncSample; typedef struct _SyncSampleClass SyncSampleClass; typedef struct _SyncSamplePrivate SyncSamplePrivate; enum { SYNC_SAMPLE_0_PROPERTY, SYNC_SAMPLE_NUM_PROPERTIES }; static GParamSpec* sync_sample_properties[SYNC_SAMPLE_NUM_PROPERTIES]; #define _g_object_unref0(var) ((var == NULL) ? NULL : (var = (g_object_unref (var), NULL)))   struct _SyncSample { GtkWindow parent_instance; SyncSamplePrivate * priv; };   struct _SyncSampleClass { GtkWindowClass parent_class; };   struct _SyncSamplePrivate { GtkSpinButton* spin_box; GtkScale* slider; };     static gpointer sync_sample_parent_class = NULL;   GType sync_sample_get_type (void) G_GNUC_CONST; #define SYNC_SAMPLE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), TYPE_SYNC_SAMPLE, SyncSamplePrivate)) SyncSample* sync_sample_new (void); SyncSample* sync_sample_construct (GType object_type); static void _gtk_main_quit_gtk_widget_destroy (GtkWidget* _sender, gpointer self); static void __lambda4_ (SyncSample* self); static void ___lambda4__gtk_adjustment_value_changed (GtkAdjustment* _sender, gpointer self); static void __lambda5_ (SyncSample* self); static void ___lambda5__gtk_adjustment_value_changed (GtkAdjustment* _sender, gpointer self); gint sync_sample_main (gchar** args, int args_length1); static void sync_sample_finalize (GObject * obj);     static void _gtk_main_quit_gtk_widget_destroy (GtkWidget* _sender, gpointer self) { gtk_main_quit (); }     static void __lambda4_ (SyncSample* self) { GtkScale* _tmp0_; GtkAdjustment* _tmp1_; GtkAdjustment* _tmp2_; GtkSpinButton* _tmp3_; GtkAdjustment* _tmp4_; GtkAdjustment* _tmp5_; gdouble _tmp6_; gdouble _tmp7_; _tmp0_ = self->priv->slider; _tmp1_ = gtk_range_get_adjustment ((GtkRange*) _tmp0_); _tmp2_ = _tmp1_; _tmp3_ = self->priv->spin_box; _tmp4_ = gtk_spin_button_get_adjustment (_tmp3_); _tmp5_ = _tmp4_; _tmp6_ = gtk_adjustment_get_value (_tmp5_); _tmp7_ = _tmp6_; gtk_adjustment_set_value (_tmp2_, _tmp7_); }     static void ___lambda4__gtk_adjustment_value_changed (GtkAdjustment* _sender, gpointer self) { __lambda4_ ((SyncSample*) self); }     static void __lambda5_ (SyncSample* self) { GtkSpinButton* _tmp0_; GtkAdjustment* _tmp1_; GtkAdjustment* _tmp2_; GtkScale* _tmp3_; GtkAdjustment* _tmp4_; GtkAdjustment* _tmp5_; gdouble _tmp6_; gdouble _tmp7_; _tmp0_ = self->priv->spin_box; _tmp1_ = gtk_spin_button_get_adjustment (_tmp0_); _tmp2_ = _tmp1_; _tmp3_ = self->priv->slider; _tmp4_ = gtk_range_get_adjustment ((GtkRange*) _tmp3_); _tmp5_ = _tmp4_; _tmp6_ = gtk_adjustment_get_value (_tmp5_); _tmp7_ = _tmp6_; gtk_adjustment_set_value (_tmp2_, _tmp7_); }     static void ___lambda5__gtk_adjustment_value_changed (GtkAdjustment* _sender, gpointer self) { __lambda5_ ((SyncSample*) self); }     SyncSample* sync_sample_construct (GType object_type) { SyncSample * self = NULL; GtkSpinButton* _tmp0_; GtkScale* _tmp1_; GtkSpinButton* _tmp2_; GtkAdjustment* _tmp3_; GtkAdjustment* _tmp4_; GtkScale* _tmp5_; GtkAdjustment* _tmp6_; GtkAdjustment* _tmp7_; GtkSpinButton* _tmp8_; GtkAdjustment* _tmp9_; GtkAdjustment* _tmp10_; GtkBox* hbox = NULL; GtkBox* _tmp11_; GtkSpinButton* _tmp12_; GtkScale* _tmp13_; self = (SyncSample*) g_object_new (object_type, NULL); gtk_window_set_title ((GtkWindow*) self, "Enter your age"); g_object_set ((GtkWindow*) self, "window-position", GTK_WIN_POS_CENTER, NULL); g_signal_connect ((GtkWidget*) self, "destroy", (GCallback) _gtk_main_quit_gtk_widget_destroy, NULL); gtk_window_set_default_size ((GtkWindow*) self, 300, 20); _tmp0_ = (GtkSpinButton*) gtk_spin_button_new_with_range ((gdouble) 0, (gdouble) 130, (gdouble) 1); g_object_ref_sink (_tmp0_); _g_object_unref0 (self->priv->spin_box); self->priv->spin_box = _tmp0_; _tmp1_ = (GtkScale*) gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, (gdouble) 0, (gdouble) 130, (gdouble) 1); g_object_ref_sink (_tmp1_); _g_object_unref0 (self->priv->slider); self->priv->slider = _tmp1_; _tmp2_ = self->priv->spin_box; _tmp3_ = gtk_spin_button_get_adjustment (_tmp2_); _tmp4_ = _tmp3_; g_signal_connect_object (_tmp4_, "value-changed", (GCallback) ___lambda4__gtk_adjustment_value_changed, self, 0); _tmp5_ = self->priv->slider; _tmp6_ = gtk_range_get_adjustment ((GtkRange*) _tmp5_); _tmp7_ = _tmp6_; g_signal_connect_object (_tmp7_, "value-changed", (GCallback) ___lambda5__gtk_adjustment_value_changed, self, 0); _tmp8_ = self->priv->spin_box; _tmp9_ = gtk_spin_button_get_adjustment (_tmp8_); _tmp10_ = _tmp9_; gtk_adjustment_set_value (_tmp10_, (gdouble) 35); _tmp11_ = (GtkBox*) gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5); g_object_ref_sink (_tmp11_); hbox = _tmp11_; gtk_box_set_homogeneous (hbox, TRUE); _tmp12_ = self->priv->spin_box; gtk_container_add ((GtkContainer*) hbox, (GtkWidget*) _tmp12_); _tmp13_ = self->priv->slider; gtk_container_add ((GtkContainer*) hbox, (GtkWidget*) _tmp13_); gtk_container_add ((GtkContainer*) self, (GtkWidget*) hbox); _g_object_unref0 (hbox); return self; }     SyncSample* sync_sample_new (void) { return sync_sample_construct (TYPE_SYNC_SAMPLE); }     gint sync_sample_main (gchar** args, int args_length1) { gint result = 0; SyncSample* window = NULL; SyncSample* _tmp0_; gtk_init (&args_length1, &args); _tmp0_ = sync_sample_new (); g_object_ref_sink (_tmp0_); window = _tmp0_; gtk_widget_show_all ((GtkWidget*) window); gtk_main (); result = 0; _g_object_unref0 (window); return result; }     int main (int argc, char ** argv) { return sync_sample_main (argv, argc); }     static void sync_sample_class_init (SyncSampleClass * klass) { sync_sample_parent_class = g_type_class_peek_parent (klass); g_type_class_add_private (klass, sizeof (SyncSamplePrivate)); G_OBJECT_CLASS (klass)->finalize = sync_sample_finalize; }     static void sync_sample_instance_init (SyncSample * self) { self->priv = SYNC_SAMPLE_GET_PRIVATE (self); }     static void sync_sample_finalize (GObject * obj) { SyncSample * self; self = G_TYPE_CHECK_INSTANCE_CAST (obj, TYPE_SYNC_SAMPLE, SyncSample); _g_object_unref0 (self->priv->spin_box); _g_object_unref0 (self->priv->slider); G_OBJECT_CLASS (sync_sample_parent_class)->finalize (obj); }     GType sync_sample_get_type (void) { static volatile gsize sync_sample_type_id__volatile = 0; if (g_once_init_enter (&sync_sample_type_id__volatile)) { static const GTypeInfo g_define_type_info = { sizeof (SyncSampleClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) sync_sample_class_init, (GClassFinalizeFunc) NULL, NULL, sizeof (SyncSample), 0, (GInstanceInitFunc) sync_sample_instance_init, NULL }; GType sync_sample_type_id; sync_sample_type_id = g_type_register_static (gtk_window_get_type (), "SyncSample", &g_define_type_info, 0); g_once_init_leave (&sync_sample_type_id__volatile, sync_sample_type_id); } return sync_sample_type_id__volatile; }

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Quel est le piège dans le lequel je suis tombé ?
merci de votre aide

Bonjour.

Dans le callback void cb_spin_button (GtkWidget *spin_button, gpointer range); tu tournes en rond :lol:.

Tu récupères la valeur de scale pour l'affecter à spin_button. Le problème est que comme spin_button vaut 75 tu affectes directement cette valeur. Il faut plutôt faire l'inverse. Idem pour void cb_scale (GtkWidget *scale, gpointer spin_button);.

Code:

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void cb_spin_button (GtkWidget *spin_button, gpointer scale) { g_print(" j'appelle le callback du spin bouton pour changer le scale \n");   gtk_range_set_value (GTK_RANGE(scale), gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_button))); /* gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_button), gtk_range_get_value (GTK_RANGE(range))); */   } void cb_scale (GtkWidget *scale, gpointer spin_button) { g_print(" j'appelle le callback du scale pour changer le spin bouton \n");   gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_button), gtk_range_get_value (GTK_RANGE(scale))); /* gtk_range_set_value (GTK_RANGE(scale), gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_button))); */ }

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hello gerald3d,

Ton œil de lynx est sans pitié. Je me suis un peu énervé sur ce sujet. Néanmoins je ne m'attendais pas à une bêtise aussi simple.:calim2::roll::oops:

j'ai donc suivi tes conseils à la lettre et ca fonctionne maintenant. Voici le code de test à toute fin utile. Pour ceux qui pourraient en avoir besoin;:lol::weird:

Code:

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#include <gtk/gtk.h>   //gtk-sync-sample_moi.c /* Compile with:  *  * gcc -std=c11 -Wall -fmax-errors=10 -Wextra gtk-sync-sample_moi.c -o gtk-sync-sample_moi `pkg-config --cflags --libs gtk+-3.0`  */   void cb_quit (GtkWidget *widget, gpointer user_data) { gtk_main_quit(); /* parametres inutilises */ (void)widget; (void)user_data; } void cb_spin_button (GtkWidget *spin_button, gpointer range) { g_print(" j'appelle le callback du spin bouton pour changer le scale \n"); gtk_range_set_value (GTK_RANGE(range), gtk_spin_button_get_value (GTK_SPIN_BUTTON(spin_button))); } void cb_scale (GtkWidget *scale, gpointer spin_button) { g_print(" j'appelle le callback du scale pour changer le spin bouton \n"); gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin_button), gtk_range_get_value (GTK_RANGE(scale))); }   static void do_activate (GtkApplication *app, gpointer data) { /* Create a window with a title, and a default size */ GtkWidget *window = gtk_application_window_new (app);   /* Creation du conteneur principal */ GtkWidget *main_box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0); gtk_container_add (GTK_CONTAINER (window), main_box);   /* taille minimum */ gtk_window_set_default_size (GTK_WINDOW (window), 500, 200);   /*création d'une bordure interne à la fenêtre window*/ gtk_container_set_border_width (GTK_CONTAINER (window), 10); gtk_window_set_title (GTK_WINDOW (window),"test de synchro entre 2 widgets");   g_signal_connect (window, "delete_event",G_CALLBACK (cb_quit), NULL);   GtkWidget * spin_button = gtk_spin_button_new_with_range(1, 130,2);   GtkWidget * scale = gtk_scale_new_with_range(GTK_ORIENTATION_HORIZONTAL,0,130,2); int expand = TRUE ; int fill = TRUE; int padding =1;   gtk_box_pack_start (GTK_BOX (main_box), spin_button, !expand, fill, padding); GtkWidget * Separator = gtk_separator_new(GTK_ORIENTATION_VERTICAL); gtk_box_pack_start (GTK_BOX (main_box), Separator, FALSE, FALSE, 0); gtk_box_pack_start (GTK_BOX (main_box), scale, expand, fill, padding);   gint value = 75; GtkAdjustment * adjustement_scale = gtk_adjustment_new ( value,1, 130,2,0,0); GtkAdjustment * adjustement_button = gtk_adjustment_new ( value,1, 130,2,0,0);   gtk_range_set_adjustment (GTK_RANGE(scale),adjustement_scale); gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON(spin_button), adjustement_button);   g_signal_connect (scale, "value-changed", G_CALLBACK (cb_scale), spin_button); g_signal_connect (spin_button, "value-changed", G_CALLBACK (cb_spin_button), scale);   /* Affichage de la fenetre principale */ gtk_widget_show_all (window); /* parametres inutilises */ (void)data; }   int main (int argc, char **argv) { GtkApplication *app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE); g_signal_connect (app, "activate", G_CALLBACK (do_activate), NULL);   int status = g_application_run (G_APPLICATION (app), argc, argv); g_object_unref (app); return status; }

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Un très grand merci:lol::lol::lol::lol: