Re: Weird behaviour when etting font size in vte

[Eduardo M KALINOWSKI <ekalin bol com br>]

Eduardo M KALINOWSKI wrote:

>    I'm using a vte in my program. I wanted the hability to set the 
> font used by the terminal emulator, so I'm using a GtkFontButton to 
> pop-up a font selector, and then I set the vte font from what the user 
> chose.
>
>    The code works, but there is an interesting behaviour: the size of 
> the font that the vte starts using is not the size of the font that is 
> displayed in the preview area of the font selection dialog.
>
>    I'm attaching a sample program that shows this strange behaviour.
Here is the program:
#include <string.h>
#include <gtk/gtk.h>
#include <vte/vte.h>


void
font_set_cb(GtkFontButton *font_btn, gpointer data)
{
 VteTerminal *vte;
 char *font_name;

 vte = VTE_TERMINAL(data);
 font_name = gtk_font_button_get_font_name(font_btn);
 printf("Changing to %s\n", font_name);
 vte_terminal_set_font_from_string(vte, font_name);
 font_name = pango_font_description_to_string(vte_terminal_get_font(vte));
 printf("Changed to %s\n", font_name);
 g_free(font_name);
}


GtkWidget*
create_main_window()
{
 GtkWidget *window;
 GtkWidget *vbox;
 GtkWidget *vte;
 GtkWidget *fontBtn;
 char      *font_name;
 int        i;
 char      *test_str = "The Quick Brown Fox Jumps Over The Lazy Dog\n\r";

 window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 gtk_window_set_title(GTK_WINDOW(window), "VTE Test");

 vbox = gtk_vbox_new(FALSE, 0);

 vte = vte_terminal_new();
 vte_terminal_set_encoding(VTE_TERMINAL(vte), "UTF-8");
 vte_terminal_set_size(VTE_TERMINAL(vte), 80, 24);

 gtk_box_pack_start(GTK_BOX(vbox), vte, TRUE, TRUE, 0);

 font_name = 
pango_font_description_to_string(vte_terminal_get_font(VTE_TERMINAL(vte)));
 printf("Initial font: %s\n", font_name);
 fontBtn = gtk_font_button_new_with_font(font_name);
 g_free(font_name);
 g_signal_connect(G_OBJECT(fontBtn), "font-set",
                  G_CALLBACK(font_set_cb), vte);
 gtk_box_pack_start(GTK_BOX(vbox), fontBtn, FALSE, FALSE, 0);

 /* Add some sample text to the terminal */
 for (i = 0; i < 20; ++i) {
   vte_terminal_feed(VTE_TERMINAL(vte), test_str, strlen(test_str));
 }

 gtk_container_add(GTK_CONTAINER(window), vbox);

 return window;
}


int
main(int argc, char *argv[], char *env[])
{
 GtkWidget *wndMain;

 gtk_init(&argc, &argv);
 wndMain = create_main_window();
 gtk_widget_show_all(wndMain);

 gtk_main();

 return 0;
}


--
Necessity hath no law.
                -- Oliver Cromwell

Eduardo M KALINOWSKI
ekalin bol com br
http://move.to/hpkb