Colored pixmap in a CList widget.

[Deganello Aligi <Aligi Deganello bologna marelli it>]

  Hi all, 
        
I want to put a Color column in a clist and I want to show a monocolored
pixmap in every line. I wonder if it possible to change the foreground color
of the pixmap dynamically, that is I click on the column with the pixmap
inside and I'll get a colorselection window where I can set the foreground
color of the pixmap itself.
What I get in the example below is to set the foreground of the list.

  Thanks in advance, Aligi.



/* example-start clist clist.c */

#include <gtk/gtk.h>

GdkPixmap *pixmap;

static const char bitmap_data[] =
{
        0,0,0,0,0,0,0,0,
        0,0,0,0,0,0,0,0,
        0,0,1,1,1,1,0,0,
        0,0,1,1,1,1,0,0,
        0,0,1,1,1,1,0,0,
        0,0,1,1,1,1,0,0,
        0,0,0,0,0,0,0,0,
        0,0,0,0,0,0,0,0
};

void selection_made( GtkWidget      *clist,
                     gint row, gint column,
                     GdkEventButton *event,
                     gpointer        data )
{
    gchar *text;
    GdkColor color = { 0, 0xffff, 0, 0 };
    GdkColormap *colormap;


    gtk_clist_get_text(GTK_CLIST(clist), row, column, &text);
    g_print("You selected row %d and column %d, with text %s\n\n", row,
column, text);
    
    /* Now I want to change foreground color to pixmap in column 3 */
    colormap=gdk_window_get_colormap(clist->window);
    gdk_colormap_alloc_color(colormap, &color,  TRUE, TRUE);
        gdk_gc_set_foreground(clist->style->black_gc, &color);
        gtk_clist_set_pixmap( (GtkCList *) clist, 1, 2, pixmap, NULL);

    
    return;
}

int main( int argc, gchar *argv[] )
{
    gchar *drink[3][3] = { { "Milk",    "3 Oz", "" },
                           { "Water",   "6 l", "" },
                           { "Carrots", "2", "" } };
    GtkWidget *window;
    GtkWidget *clist;

    GdkBitmap *mask;
    GtkStyle  *style;
    gint indx;
    gchar *titles[] = { "Ingredients", "Amount", "Color" };

    gtk_init(&argc, &argv);
    
    window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "GtkCList Example");
    gtk_signal_connect(GTK_OBJECT(window), "destroy",
                       GTK_SIGNAL_FUNC(gtk_main_quit), NULL);

    clist = gtk_clist_new_with_titles( 3, titles);
    gtk_signal_connect(GTK_OBJECT(clist), "select_row",
                       GTK_SIGNAL_FUNC(selection_made), pixmap);
    gtk_clist_set_shadow_type (GTK_CLIST(clist), GTK_SHADOW_OUT);
    gtk_clist_set_column_width (GTK_CLIST(clist), 0, 120);
    gtk_container_add(GTK_CONTAINER(window), clist);
    gtk_widget_show(clist);
    pixmap = gdk_bitmap_create_from_data( window->window, bitmap_data, 8, 8
);

    for ( indx=0 ; indx < 3 ; indx++ )
    {
        gtk_clist_append( GTK_CLIST(clist), drink[indx]);
        gtk_clist_set_pixmap( (GtkCList *) clist, indx, 2, pixmap, NULL);
        }

    gtk_widget_show(window);

    gtk_main();

    return(0);
}
/* example-end */