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printeroptionwidget: Maintain cursor position in combo-entry

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Maintain cursor position even if the text in the entry has been filtered.
This is achieved by maintaining the same position with respect to
the end of the text buffer as we suppose that the text after the cursor
hasn't changed. This is measured in characters not bytes.

Fixes #6782
This commit is contained in:
Marek Kasik 2024-08-07 20:25:31 +02:00
parent 6435d5083a
commit 83035c1d4b
1 changed files with 12 additions and 0 deletions
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12
gtk/print/gtkprinteroptionwidget.c
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@ -812,9 +812,21 @@ handle_combo_entry_change (GtkPrinterOptionWidget *widget)
if (changed)
{
GtkWidget *entry = gtk_widget_get_first_child (priv->combo);
gssize buffer_length, filtered_buffer_length;
gint position;
position = gtk_editable_get_position (GTK_EDITABLE (entry));
buffer_length = gtk_entry_buffer_get_length (gtk_entry_get_buffer (GTK_ENTRY (entry)));
g_signal_handler_block (entry, priv->comboentry_changed_handler_id);
gtk_editable_set_text (GTK_EDITABLE (entry), filtered_val);
g_signal_handler_unblock (entry, priv->comboentry_changed_handler_id);
filtered_buffer_length = gtk_entry_buffer_get_length (gtk_entry_get_buffer (GTK_ENTRY (entry)));
/* Maintain position of the cursor with respect to the end of the buffer. */
if (position > 0 && filtered_buffer_length < buffer_length)
gtk_editable_set_position (GTK_EDITABLE (entry), position - (buffer_length - filtered_buffer_length));
}
value = filtered_val;
}