Philipp SandTitouan Real
bd4d503080
Co-Authored-By: Titouan Real <titouan.real@gmail.com> Part-of: <https://gitlab.gnome.org/GNOME/gnome-calendar/-/merge_requests/657>
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/..
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*/
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/* Bits taken from GTK 4.0.2 and tweaked to be used by libadwaita. */
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/* Copied from libadwaita 1.8 and adapted for use in gnome-calendar. */
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#include "gcal-bidi.h"
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#include <fribidi.h>
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static PangoDirection
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gcal_unichar_direction (gunichar ch)
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{
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FriBidiCharType fribidi_ch_type;
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G_STATIC_ASSERT (sizeof (FriBidiChar) == sizeof (gunichar));
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fribidi_ch_type = fribidi_get_bidi_type (ch);
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if (!FRIBIDI_IS_STRONG (fribidi_ch_type))
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return PANGO_DIRECTION_NEUTRAL;
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else if (FRIBIDI_IS_RTL (fribidi_ch_type))
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return PANGO_DIRECTION_RTL;
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else
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return PANGO_DIRECTION_LTR;
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}
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PangoDirection
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gcal_find_base_dir (const gchar *text,
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gint length)
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{
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PangoDirection dir = PANGO_DIRECTION_NEUTRAL;
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const char *p;
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g_return_val_if_fail (text != NULL || length == 0, PANGO_DIRECTION_NEUTRAL);
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p = text;
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while ((length < 0 || p < text + length) && *p) {
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gunichar wc = g_utf8_get_char (p);
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dir = gcal_unichar_direction (wc);
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if (dir != PANGO_DIRECTION_NEUTRAL)
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break;
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p = g_utf8_next_char (p);
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}
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return dir;
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}
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