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| author | raveit65 <[email protected]> | 2017-01-08 16:32:23 +0100 |
|---|---|---|
| committer | raveit65 <[email protected]> | 2017-02-17 12:28:22 +0100 |
| commit | 279b0133806518947ac49c3bba69552140c6645f (patch) | |
| tree | 6b4167661e0f5d91f1fd3f9dd3325564a92fa1a8 /font-viewer/sushi-font-loader.c | |
| parent | 2c8440f8987ea73973f43b952c1942332bd4663c (diff) | |
| download | mate-control-center-279b0133806518947ac49c3bba69552140c6645f.tar.bz2 mate-control-center-279b0133806518947ac49c3bba69552140c6645f.tar.xz | |
Font-viewer: import SushiFontLoader and SushiFontWidget
taken from:
https://git.gnome.org/browse/gnome-font-viewer/commit/?id=f50e4c4
Diffstat (limited to 'font-viewer/sushi-font-loader.c')
| -rw-r--r-- | font-viewer/sushi-font-loader.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/font-viewer/sushi-font-loader.c b/font-viewer/sushi-font-loader.c new file mode 100644 index 00000000..9ac319fd --- /dev/null +++ b/font-viewer/sushi-font-loader.c @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2011 Red Hat, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + * + * The Sushi project hereby grant permission for non-gpl compatible GStreamer + * plugins to be used and distributed together with GStreamer and Sushi. This + * permission is above and beyond the permissions granted by the GPL license + * Sushi is covered by. + * + * Authors: Cosimo Cecchi <[email protected]> + * + */ + +#include "sushi-font-loader.h" + +#include <stdlib.h> +#include <ft2build.h> +#include FT_FREETYPE_H + +#include <gio/gio.h> + +typedef struct { + FT_Library library; + FT_Long face_index; + GFile *file; + GSimpleAsyncResult *result; + + gchar *face_contents; + gsize face_length; +} FontLoadJob; + +static FontLoadJob * +font_load_job_new (FT_Library library, + const gchar *uri, + GAsyncReadyCallback callback, + gpointer user_data) +{ + FontLoadJob *job = g_slice_new0 (FontLoadJob); + + job->library = library; + job->face_index = 0; + job->file = g_file_new_for_uri (uri); + job->result = g_simple_async_result_new + (NULL, callback, user_data, + sushi_new_ft_face_from_uri_async); + + g_simple_async_result_set_op_res_gpointer (job->result, job, NULL); + + return job; +} + +static void +font_load_job_free (FontLoadJob *job) +{ + g_clear_object (&job->result); + g_clear_object (&job->file); + + g_slice_free (FontLoadJob, job); +} + +static FT_Face +create_face_from_contents (FontLoadJob *job, + gchar **contents, + GError **error) +{ + FT_Error ft_error; + FT_Face retval; + + ft_error = FT_New_Memory_Face (job->library, + (const FT_Byte *) job->face_contents, + (FT_Long) job->face_length, + job->face_index, + &retval); + + if (ft_error != 0) { + g_set_error_literal (error, G_IO_ERROR, 0, + "Unable to read the font face file"); + retval = NULL; + g_free (job->face_contents); + } else { + *contents = job->face_contents; + } + + return retval; +} + +static gboolean +font_load_job_callback (gpointer user_data) +{ + FontLoadJob *job = user_data; + + g_simple_async_result_complete (job->result); + font_load_job_free (job); + + return FALSE; +} + +static void +font_load_job_do_load (FontLoadJob *job, + GError **error) +{ + gchar *contents; + gsize length; + + g_file_load_contents (job->file, NULL, + &contents, &length, NULL, error); + + if ((error != NULL) && (*error == NULL)) { + job->face_contents = contents; + job->face_length = length; + } +} + +static gboolean +font_load_job (GIOSchedulerJob *sched_job, + GCancellable *cancellable, + gpointer user_data) +{ + FontLoadJob *job = user_data; + GError *error = NULL; + + font_load_job_do_load (job, &error); + + if (error != NULL) + g_simple_async_result_take_error (job->result, error); + + g_io_scheduler_job_send_to_mainloop_async (sched_job, + font_load_job_callback, + job, NULL); + + return FALSE; +} + +/** + * sushi_new_ft_face_from_uri: (skip) + * + */ +FT_Face +sushi_new_ft_face_from_uri (FT_Library library, + const gchar *uri, + gchar **contents, + GError **error) +{ + FontLoadJob *job = NULL; + + job = font_load_job_new (library, uri, NULL, NULL); + font_load_job_do_load (job, error); + + if ((error != NULL) && (*error != NULL)) { + g_object_unref (job); + return NULL; + } + + return create_face_from_contents (job, contents, error); +} + +/** + * sushi_new_ft_face_from_uri_async: (skip) + * + */ +void +sushi_new_ft_face_from_uri_async (FT_Library library, + const gchar *uri, + GAsyncReadyCallback callback, + gpointer user_data) +{ + FontLoadJob *job = font_load_job_new (library, uri, callback, user_data); + g_io_scheduler_push_job (font_load_job, + job, NULL, + G_PRIORITY_DEFAULT, + NULL); +} + +/** + * sushi_new_ft_face_from_uri_finish: (skip) + * + */ +FT_Face +sushi_new_ft_face_from_uri_finish (GAsyncResult *result, + gchar **contents, + GError **error) +{ + FontLoadJob *job; + + if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result), + error)) + return NULL; + + job = g_simple_async_result_get_op_res_gpointer (G_SIMPLE_ASYNC_RESULT (result)); + + return create_face_from_contents (job, contents, error); +} + |