GtkTextView Sizing Issues

[Paul <650267 gmail com>]

Hi there,

I'm experiencing some issues trying to port an application of mine to
Gtk+ 3. I have a vertical stack of GtkTextViews that I want to appear
one after another without any vertical padding between them. I have
issues using both GtkVBoxes (as originally used in my Gtk+ 2 version)
and newer GtkGrids.

Having a quick look around I see the issues seem to be same as in bug
650267 [https://bugzilla.gnome.org/show_bug.cgi?id=650267] but there
hasn't been any updates on that since it was raised about a year ago,
so I thought I'd check for advice here.

I've attached a simple test program below (which I hope is right -- I
use gtkmm and haven't used the direct C API in a while). Like the
original report mentioned, the GtkTextViews appear narrow and very
tall by default. More difficult for me to understand is why there's
extra vertical padding in the widgets without the focus, i.e., the top
two of the three GtkTextViews in this example. Clicking on either of
the top two GtkTextViews will suddenly resize it down to the correct
size too!

Setting hexpand TRUE on the GtkTextViews does help with the initial
sizings: everything 'looks' OK until I resize the window, making it
wider so the text renders in fewer lines in the GtkTextViews. I then
get similar behaviour as before: the GtkTextViews without the focus
don't automatically resize, only suddenly doing so when they receive
focus.

So, does anyone have any suggestions or fixes? If so they'd be greatly
appreciated.

Thanks,
Paul


--8<--

#include <gtk/gtk.h>
#include <string.h>

const char text[] =
  "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod "
  "tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim "
  "veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea "
  "commodo consequat.";

static GtkWidget *create_widget() {
  GtkWidget *widget = gtk_text_view_new();
  gtk_text_buffer_set_text(gtk_text_view_get_buffer(GTK_TEXT_VIEW(widget)),
    text, strlen(text));
  gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(widget), GTK_WRAP_WORD);
//gtk_widget_set_hexpand(widget, TRUE);  /* helps with 'initial' sizings */
  return widget;
}

int main(int argc, char **argv) {
  gtk_init(&argc, &argv);

  GtkWidget *grid = gtk_grid_new();
  gtk_grid_attach(GTK_GRID(grid), create_widget(), 0, 0, 1, 1);
  gtk_grid_attach(GTK_GRID(grid), create_widget(), 0, 1, 1, 1);
  gtk_grid_attach(GTK_GRID(grid), create_widget(), 0, 2, 1, 1);

  GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled_window),
    grid);

  GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_window_set_default_size(GTK_WINDOW(window), 500, 300);
  gtk_container_add(GTK_CONTAINER(window), scrolled_window);

  g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
  gtk_widget_show_all(window);
  gtk_main();
  return 0;
}

--8<--