Files
gtk/modules/input
Alynx Zhou 9651546b97 gtkimcontextwayland: Convert byte based offset to char based offset in delete_surrounding_text
ClutterInputFocus/GtkIMContext uses char based offset for
delete_surrounding, however, text_input_v3 uses byte based offset for
it. Currently only GTK with mutter can work correctly via text_input_v3
because they both forget to convert between char based offset and byte
based offset.

This commit fixes it in GTK by converting byte based offset to char
based offset with the UTF-8 encoded surrounding text.

Fixes <https://gitlab.gnome.org/GNOME/gtk/-/issues/4566>.
2022-12-20 09:46:52 +08:00
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*** Introduction

This is a GTK+ input method which allows text entry via the multi-press method, 
as on a mobile phone. When this has been installed, you can choose the "Multipress" 
menu item from the "Input Methods" submenu when right-clicking in a GTK+ text entry 
area. 

For instance:
- press a to get a, then wait 1 second for the character to be accepted.
or
- press dd to get e, then wait 1 second for the character to be accepted.
or
- press ad to get ad, then wait 1 second for the d character to be accepted.


*** Configuration

Edit the im-multipress.conf to define the keypresses needed to input particular characters.
This file is in GKeyFile-format, and contains explanatory comments.


*** Per-widget deactivation

When the input method is active (either by choosing it from the context menu, or 
by defining the default language as "*" in immultipress.c), the multipress 
behaviour can be turned off for individual widgets, like so:

  g_object_set_data(G_OBJECT(yourwidget), "multipress-passthrough-flag", GINT_TO_POINTER(1));


For a C++ gtkmm project, you could make a convenience function to do this. For instance:

  void multipress_deactivate(Gtk::Widget& widget)
  {
    static const Glib::Quark quark ("multipress-passthrough-flag");
    widget.set_data(quark, GINT_TO_POINTER(1));
  }

*** Contact

Please contact Openismus for assistance with this input method. You can email murrayc@openismus.com

Copyright 2006-2007, Openismus GmbH