Acess stock items like "accesories", "audiovideo", etc.

Joel · **Posted:** Mon Dec 26, 2011 4:55 pm

I'm building a personal app to create deaktopfiles. The thing left to do is to add in my combo box the images of each categories, which I have:

Code:

const gchar *categories[] = 
{
   "AudioVideo", "Audio", "Video", "Development", 
   "Education", "Game", "Graphics", "Network",
   "Office", "Settings", "System", "Utility"
};

Question: How can I access those icons? They are the same icons that have in menus like gnome-menu, lxpanel, etc.

asdfgh2091 · **Joined:** Fri Sep 04, 2009 6:53 am **Posts:** 61

Usually you can get an "named" icon by using gtk_image_new_from_icon_name (http://developer.gimp.org/api/2.0/gtk/G ... -icon-name). But since GtkComboBox implements GtkCellLayout you can program something like this:

Code:

int main(int argc, char **argv)
{
    gtk_init(&argc,&argv);
    GtkWidget *window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
    g_signal_connect(G_OBJECT(window),"destroy",G_CALLBACK(gtk_main_quit),NULL);

    GtkListStore *store=gtk_list_store_new(2,G_TYPE_STRING,G_TYPE_STRING);

    struct
    {
        char *icon_name;
        char *label;
    }
    labels[]=
    {
        {"video","Video"},
        {"sound","Sound"},
        {"applications-multimedia","AudioVideo"},
        {"applications-office","Office"},
    };

    int i;
    for (i=0; i<G_N_ELEMENTS(labels); i++)
    {
        GtkTreeIter iter;
        gtk_list_store_append(store,&iter);
        gtk_list_store_set(store,&iter,
                           0,labels[i].icon_name,1,labels[i].label,-1);
    }

    GtkWidget *combo=gtk_combo_box_new_with_model(GTK_TREE_MODEL(store));
    gtk_container_add(GTK_CONTAINER(window),combo);

    GtkCellRenderer *renderer_icon=gtk_cell_renderer_pixbuf_new();
    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo),renderer_icon,FALSE);
    gtk_cell_layout_add_attribute(GTK_CELL_LAYOUT(combo),renderer_icon,
                                  "icon-name",0);

    GtkCellRenderer *renderer_text=gtk_cell_renderer_text_new();
    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo),renderer_text,TRUE);
    gtk_cell_layout_add_attribute(GTK_CELL_LAYOUT(combo),renderer_text,
                                  "text",1);

    gtk_widget_show_all(window);
    gtk_main();
    return 0;
}

Joel · **Posted:** Mon Dec 26, 2011 11:50 pm

Thanks, but a get errors like:

Quote:

GLib-GObject-WARNING **: unable to set property `pixbuf' of type `GdkPixbuf' from value of type `gchararray'

asdfgh2091 · **Joined:** Fri Sep 04, 2009 6:53 am **Posts:** 61

Works here (if you include the first line "#include <gtk/gtk.h>" (which i have forgot) and copy and paste it in an empty g.c.
Ubuntu 11.04, gtk+-2.0. Compile with the usual "gcc g.c `pkg-config --cflags --libs gtk+-2.0` -o g"

Code:

#include <gtk/gtk.h>

int main(int argc, char **argv)
{
    gtk_init(&argc,&argv);
    GtkWidget *window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
    g_signal_connect(G_OBJECT(window),"destroy",G_CALLBACK(gtk_main_quit),NULL);

    GtkListStore *store=gtk_list_store_new(2,G_TYPE_STRING,G_TYPE_STRING);

    struct
    {
        char *icon_name;
        char *label;
    }
    labels[]=
    {
        {"video","Video"},
        {"sound","Sound"},
        {"applications-multimedia","AudioVideo"},
        {"applications-office","Office"},
    };

    int i;
    for (i=0; i<G_N_ELEMENTS(labels); i++)
    {
        GtkTreeIter iter;
        gtk_list_store_append(store,&iter);
        gtk_list_store_set(store,&iter,
                           0,labels[i].icon_name,1,labels[i].label,-1);
    }

    GtkWidget *combo=gtk_combo_box_new_with_model(GTK_TREE_MODEL(store));
    gtk_container_add(GTK_CONTAINER(window),combo);

    GtkCellRenderer *renderer_icon=gtk_cell_renderer_pixbuf_new();
    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo),renderer_icon,FALSE);
    gtk_cell_layout_add_attribute(GTK_CELL_LAYOUT(combo),renderer_icon,
                                  "icon-name",0);

    GtkCellRenderer *renderer_text=gtk_cell_renderer_text_new();
    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo),renderer_text,TRUE);
    gtk_cell_layout_add_attribute(GTK_CELL_LAYOUT(combo),renderer_text,
                                  "text",1);

    gtk_widget_show_all(window);
    gtk_main();
    return 0;
}

Joel · **Posted:** Wed Dec 28, 2011 12:20 am

Thanks I found from a site the API named gtk_icon_theme_load_icon, more or less my final code:

Code:

const gchar *categories[][2] = 
{
   {"applications-multimedia", "AudioVideo"},
   {"applications-multimedia", "Audio"},
   {"applications-multimedia", "Video"},
   {"applications-development", "Development"},
   {"applications-science", "Education"},
   {"applications-games", "Game"},
   {"applications-graphics", "Graphics"},
   {"applications-internet", "Network"},
   {"applications-office", "Office"},
   {"applications-accessories", "Settings"},
   {"applications-system", "System"},
   {"applications-utilities", "Utility"}
};

model = gtk_list_store_new (2, GDK_TYPE_PIXBUF, G_TYPE_STRING);
   n_items = G_N_ELEMENTS (categories);
   icon_theme = gtk_icon_theme_get_default ();
   for (pos = 0; pos != n_items; pos++) {
      GdkPixbuf *pixbuf;
      GtkTreeIter iter;
      gtk_list_store_append (model, &iter);
      pixbuf = gtk_icon_theme_load_icon (icon_theme, categories[pos][0], 32, 0, NULL);
      gtk_list_store_set (model, &iter, 0, pixbuf, 1, categories[pos][1], -1);
      g_object_unref (pixbuf);
   }
   ptr->combo1 = gtk_combo_box_new_with_model (GTK_TREE_MODEL (model));
   render_pixbuf = gtk_cell_renderer_pixbuf_new ();
   render_text = gtk_cell_renderer_text_new ();
   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (ptr->combo1), render_pixbuf, FALSE);
   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (ptr->combo1), render_pixbuf, "pixbuf", 0);
   gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (ptr->combo1), render_text, FALSE);
   gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (ptr->combo1), render_text, "text", 1);
   gtk_combo_box_set_active (GTK_COMBO_BOX (ptr->combo1), 0);
   g_object_unref (model);

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Acess stock items like "accesories", "audiovideo", etc.

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