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Updated the GTK3 adjustment update path in gtk_xtext_buffer_show to explicitly set adjustment bounds/page sizing and emit value-changed, while keeping GTK2 behavior unchanged.

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deepend
2026-01-25 15:16:37 -07:00
parent 361308962e
commit d4d2483161
1 changed files with 30 additions and 1 deletions
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31
src/fe-gtk/xtext.c
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@@ -5289,7 +5289,36 @@ gtk_xtext_buffer_show (GtkXText *xtext, xtext_buffer *buf, int render)
gtk_xtext_render_page (xtext);
#if HAVE_GTK3
gtk_xtext_adjustment_set (buf, TRUE);
{
GtkAllocation allocation;
gdouble lower = 0;
gdouble upper = buf->num_lines;
gdouble value = gtk_adjustment_get_value (xtext->adj);
gdouble page_size;
if (upper == 0)
upper = 1;
gtk_widget_get_allocation (GTK_WIDGET (xtext), &allocation);
page_size = allocation.height / xtext->fontsize;
gtk_adjustment_set_lower (xtext->adj, lower);
gtk_adjustment_set_upper (xtext->adj, upper);
gtk_adjustment_set_page_size (xtext->adj, page_size);
gtk_adjustment_set_page_increment (xtext->adj, page_size);
if (value > upper - page_size)
{
buf->scrollbar_down = TRUE;
value = upper - page_size;
}
if (value < 0)
value = 0;
gtk_adjustment_set_value (xtext->adj, value);
gtk_adjustment_value_changed (xtext->adj);
}
#else
gtk_adjustment_changed (xtext->adj);
#endif