Font-viewer: add FontViewModel

taken from:
https://git.gnome.org/browse/gnome-font-viewer/commit/?id=184661h

3 files changed, 539 insertions, 2 deletions

diff --git a/font-viewer/Makefile.am b/font-viewer/Makefile.am
index 98e72f01..5ed07b75 100644
--- a/font-viewer/Makefile.am
+++ b/font-viewer/Makefile.am
@@ -9,10 +9,22 @@ font_loader_SOURCES = \
 	sushi-font-loader.c
 
 mate_thumbnail_font_LDADD = $(MATECC_CAPPLETS_LIBS) $(FONT_VIEWER_LIBS)
-mate_thumbnail_font_SOURCES = $(font_loader_SOURCES) font-thumbnailer.c totem-resources.c totem-resources.h
+mate_thumbnail_font_SOURCES = \
+	$(font_loader_SOURCES) \
+	font-thumbnailer.c \
+	totem-resources.c \
+	totem-resources.h
 
 mate_font_viewer_LDADD = $(MATECC_CAPPLETS_LIBS) -lm $(FONT_VIEWER_LIBS)
-mate_font_viewer_SOURCES = gd-main-toolbar.c gd-main-toolbar.h $(font_loader_SOURCES) sushi-font-widget.h sushi-font-widget.c font-view.c
+mate_font_viewer_SOURCES = \
+	$(font_loader_SOURCES) \
+	font-model.h \
+	font-model.c \
+	gd-main-toolbar.h \
+	gd-main-toolbar.c \
+	sushi-font-widget.h \
+	sushi-font-widget.c \
+	font-view.c
 
 thumbnailerdir = $(datadir)/thumbnailers
 thumbnailer_DATA = mate-font-viewer.thumbnailer
diff --git a/font-viewer/font-model.c b/font-viewer/font-model.c
new file mode 100644
index 00000000..64db8660
--- /dev/null
+++ b/font-viewer/font-model.c
@@ -0,0 +1,458 @@
+/* -*- mode: C; c-basic-offset: 4 -*-
+ * mate-font-view: 
+ *
+ * Copyright (C) 2012 Cosimo Cecchi <[email protected]>
+ *
+ * based on code from
+ *
+ * fontilus - a collection of font utilities for MATE
+ * Copyright (C) 2002-2003  James Henstridge <[email protected]>
+ * 
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <string.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <gtk/gtk.h>
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include <fontconfig/fontconfig.h>
+
+#define MATE_DESKTOP_USE_UNSTABLE_API
+#include <libmate-desktop/mate-desktop-thumbnail.h>
+
+#include "font-model.h"
+#include "sushi-font-loader.h"
+
+struct _FontViewModelPrivate {
+    /* list of fonts in fontconfig database */
+    FcFontSet *font_list;
+
+    FT_Library library;
+};
+
+static void ensure_thumbnail (FontViewModel *self, const gchar *path);
+
+G_DEFINE_TYPE (FontViewModel, font_view_model, GTK_TYPE_LIST_STORE);
+
+#define ATTRIBUTES_FOR_THUMBNAIL \
+  G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE"," \
+  G_FILE_ATTRIBUTE_TIME_MODIFIED
+
+static gboolean
+create_thumbnail (GIOSchedulerJob *job,
+                  GCancellable *cancellable,
+                  gpointer user_data)
+{
+  GSimpleAsyncResult *result = user_data;
+  GFile *file = G_FILE (g_async_result_get_source_object (G_ASYNC_RESULT (result)));
+  MateDesktopThumbnailFactory *factory;
+  GFileInfo *info;
+  gchar *uri;
+  GdkPixbuf *pixbuf;
+  guint64 mtime;
+
+  uri = g_file_get_uri (file);
+  info = g_file_query_info (file, ATTRIBUTES_FOR_THUMBNAIL,
+                            G_FILE_QUERY_INFO_NONE,
+                            NULL, NULL);
+
+  /* we don't care about reporting errors here, just fail the
+   * thumbnail.
+   */
+  if (info == NULL)
+    {
+      g_simple_async_result_set_op_res_gboolean (result, FALSE);
+      goto out;
+    }
+
+  mtime = g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_TIME_MODIFIED);
+
+  factory = mate_desktop_thumbnail_factory_new (MATE_DESKTOP_THUMBNAIL_SIZE_NORMAL);
+  pixbuf = mate_desktop_thumbnail_factory_generate_thumbnail
+    (factory, 
+     uri, g_file_info_get_content_type (info));
+
+  if (pixbuf != NULL)
+    {
+      mate_desktop_thumbnail_factory_save_thumbnail (factory, pixbuf,
+                                                      uri, (time_t) mtime);
+      g_simple_async_result_set_op_res_gboolean (result, TRUE);
+    }
+  else
+    {
+      g_simple_async_result_set_op_res_gboolean (result, FALSE);
+    }
+
+  g_object_unref (info);
+  g_object_unref (file);
+  g_object_unref (factory);
+  g_clear_object (&pixbuf);
+
+ out:
+  g_simple_async_result_complete_in_idle (result);
+  g_object_unref (result);
+
+  return FALSE;
+}
+
+static void
+gd_queue_thumbnail_job_for_file_async (GFile *file,
+                                       GAsyncReadyCallback callback,
+                                       gpointer user_data)
+{
+  GSimpleAsyncResult *result;
+
+  result = g_simple_async_result_new (G_OBJECT (file),
+                                      callback, user_data, 
+                                      gd_queue_thumbnail_job_for_file_async);
+
+  g_io_scheduler_push_job (create_thumbnail,
+                           result, NULL,
+                           G_PRIORITY_DEFAULT, NULL);
+}
+
+static gboolean
+gd_queue_thumbnail_job_for_file_finish (GAsyncResult *res)
+{
+  GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
+
+  return g_simple_async_result_get_op_res_gboolean (simple);
+}
+
+typedef struct {
+    const gchar *file;
+    GtkTreeIter iter;
+    gboolean found;
+} IterForFileData;
+
+static gboolean
+iter_for_file_foreach (GtkTreeModel *model,
+                       GtkTreePath *path,
+                       GtkTreeIter *iter,
+                       gpointer user_data)
+{
+    IterForFileData *data = user_data;
+    gchar *font_path;
+    gboolean retval;
+
+    gtk_tree_model_get (GTK_TREE_MODEL (model), iter,
+                        COLUMN_PATH, &font_path,
+                        -1);
+
+    retval = (g_strcmp0 (font_path, data->file) == 0);
+    g_free (font_path);
+
+    if (retval) {
+        data->iter = *iter;
+        data->found = TRUE;
+    }
+
+    return retval;
+}
+
+gboolean
+font_view_model_get_iter_for_file (FontViewModel *self,
+                                   const gchar *file,
+                                   GtkTreeIter *iter)
+{
+    IterForFileData *data = g_slice_new0 (IterForFileData);
+    gboolean found;
+
+    data->file = file;
+    data->found = FALSE;
+
+    gtk_tree_model_foreach (GTK_TREE_MODEL (self),
+                            iter_for_file_foreach,
+                            data);
+
+    found = data->found;
+    if (found && iter)
+        *iter = data->iter;
+
+    g_slice_free (IterForFileData, data);
+
+    return found;
+}
+
+typedef struct {
+    FontViewModel *self;
+    gchar *font_path;
+} LoadThumbnailData;
+
+static void
+thumbnail_ready_cb (GObject *source,
+                    GAsyncResult *res,
+                    gpointer user_data)
+{
+    FontViewModel *self = user_data;
+    gboolean result;
+    gchar *path;
+    GFile *file;
+
+    result = gd_queue_thumbnail_job_for_file_finish (G_ASYNC_RESULT (res));
+
+    if (result) {
+        file = G_FILE (source);
+        path = g_file_get_path (file);
+        ensure_thumbnail (self, path);
+
+        g_free (path);
+    }
+}
+
+static void
+pixbuf_async_ready_cb (GObject *source,
+                       GAsyncResult *res,
+                       gpointer user_data)
+{
+    LoadThumbnailData *data = user_data;
+    GdkPixbuf *pix;
+    GtkTreeIter iter;
+
+    pix = gdk_pixbuf_new_from_stream_finish (res, NULL);
+
+    if (pix != NULL) {
+        if (font_view_model_get_iter_for_file (data->self, data->font_path, &iter))
+            gtk_list_store_set (GTK_LIST_STORE (data->self), &iter,
+                                COLUMN_ICON, pix,
+                                -1);
+
+        g_object_unref (pix);
+    }
+
+    g_object_unref (data->self);
+    g_free (data->font_path);
+    g_slice_free (LoadThumbnailData, data);
+}
+
+static void
+thumb_file_read_async_ready_cb (GObject *source,
+                                GAsyncResult *res,
+                                gpointer user_data)
+{
+    LoadThumbnailData *data = user_data;
+    GFileInputStream *is;
+
+    is = g_file_read_finish (G_FILE (source),
+                             res, NULL);
+
+    if (is != NULL) {
+        gdk_pixbuf_new_from_stream_at_scale_async (G_INPUT_STREAM (is),
+                                                   128, 128, TRUE,
+                                                   NULL, pixbuf_async_ready_cb, data);
+        g_object_unref (is);
+    }
+}
+
+static void
+ensure_thumbnail (FontViewModel *self,
+                  const gchar *path)
+{
+    GFile *file, *thumb_file = NULL;
+    GFileInfo *info;
+    const gchar *thumb_path;
+    LoadThumbnailData *data;
+
+    file = g_file_new_for_path (path);
+    info = g_file_query_info (file, G_FILE_ATTRIBUTE_THUMBNAIL_PATH ","
+                              G_FILE_ATTRIBUTE_THUMBNAILING_FAILED,
+                              G_FILE_QUERY_INFO_NONE,
+                              NULL, NULL);
+
+    if (!info)
+        goto out;
+    if (g_file_info_get_attribute_boolean (info, G_FILE_ATTRIBUTE_THUMBNAILING_FAILED))
+        goto out;
+
+    thumb_path = g_file_info_get_attribute_byte_string (info, G_FILE_ATTRIBUTE_THUMBNAIL_PATH);
+    if (thumb_path)
+        thumb_file = g_file_new_for_path (thumb_path);
+    else
+        gd_queue_thumbnail_job_for_file_async (file, thumbnail_ready_cb, self);
+
+    if (thumb_file != NULL) {
+        data = g_slice_new0 (LoadThumbnailData);
+        data->self = g_object_ref (self);
+        data->font_path = g_file_get_path (file);
+
+        g_file_read_async (thumb_file, G_PRIORITY_DEFAULT, NULL,
+                           thumb_file_read_async_ready_cb, data);
+
+        g_object_unref (thumb_file);
+    }
+
+ out:
+    g_clear_object (&file);
+    g_clear_object (&info);
+}
+
+static gchar *
+get_font_name (FontViewModel *self,
+               const gchar *path)
+{
+    GFile *file;
+    gchar *uri, *contents = NULL, *name = NULL;
+    GError *error = NULL;
+    FT_Face face;
+
+    file = g_file_new_for_path (path);
+    uri = g_file_get_uri (file);
+
+    face = sushi_new_ft_face_from_uri (self->priv->library, uri, &contents, &error);
+    if (face != NULL) {
+        if (g_strcmp0 (face->style_name, "Regular") == 0)
+            name = g_strdup (face->family_name);
+        else
+            name = g_strconcat (face->family_name, ", ", face->style_name, NULL);
+        FT_Done_Face (face);
+    } else if (error != NULL) {
+        g_warning ("Can't get font name: %s\n", error->message);
+        g_error_free (error);
+    }
+
+    g_free (uri);
+    g_object_unref (file);
+    g_free (contents);
+
+    return name;
+}
+
+/* make sure the font list is valid */
+static void
+ensure_font_list (FontViewModel *self)
+{
+    FcPattern *pat;
+    FcObjectSet *os;
+    gint i;
+    GtkTreeIter iter;
+    FcChar8 *file;
+    gchar *font_name;
+
+    pat = FcPatternCreate ();
+    os = FcObjectSetBuild (FC_FILE, FC_FAMILY, FC_WEIGHT, FC_SLANT, NULL);
+
+    self->priv->font_list = FcFontList (NULL, pat, os);
+
+    FcPatternDestroy (pat);
+    FcObjectSetDestroy (os);
+
+    if (!self->priv->font_list)
+        return;
+
+    for (i = 0; i < self->priv->font_list->nfont; i++) {
+	FcPatternGetString (self->priv->font_list->fonts[i], FC_FILE, 0, &file);
+        font_name = get_font_name (self, (const gchar *) file);
+
+        gtk_list_store_append (GTK_LIST_STORE (self), &iter);
+        gtk_list_store_set (GTK_LIST_STORE (self), &iter,
+                            COLUMN_NAME, font_name,
+                            COLUMN_POINTER, self->priv->font_list->fonts[i],
+                            COLUMN_PATH, file,
+                            -1);
+
+        ensure_thumbnail (self, (const gchar *) file);
+        g_free (font_name);
+    }
+}
+
+static int
+font_view_model_sort_func (GtkTreeModel *model,
+                           GtkTreeIter *a,
+                           GtkTreeIter *b,
+                           gpointer user_data)
+{
+    gchar *name_a = NULL, *name_b = NULL;
+    int retval;
+
+    gtk_tree_model_get (model, a,
+                        COLUMN_NAME, &name_a,
+                        -1);
+    gtk_tree_model_get (model, b,
+                        COLUMN_NAME, &name_b,
+                        -1);
+
+    retval = g_strcmp0 (name_a, name_b);
+
+    g_free (name_a);
+    g_free (name_b);
+
+    return retval;
+}
+
+static void
+font_view_model_init (FontViewModel *self)
+{
+    GType types[NUM_COLUMNS] =
+        { G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_STRING, GDK_TYPE_PIXBUF };
+
+    self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, FONT_VIEW_TYPE_MODEL, FontViewModelPrivate);
+
+    if (!FcInit())
+        g_critical ("Can't initialize fontconfig library");
+    if (FT_Init_FreeType (&self->priv->library) != FT_Err_Ok)
+        g_critical ("Can't initialize FreeType library");
+
+    gtk_list_store_set_column_types (GTK_LIST_STORE (self),
+                                     NUM_COLUMNS, types);
+
+    gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (self),
+                                          COLUMN_NAME,
+                                          GTK_SORT_ASCENDING);
+    gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (self),
+                                     COLUMN_NAME,
+                                     font_view_model_sort_func,
+                                     NULL, NULL);
+    ensure_font_list (self);
+}
+
+static void
+font_view_model_finalize (GObject *obj)
+{
+    FontViewModel *self = FONT_VIEW_MODEL (obj);
+
+    if (self->priv->font_list) {
+            FcFontSetDestroy (self->priv->font_list);
+            self->priv->font_list = NULL;
+    }
+
+    if (self->priv->library != NULL) {
+        FT_Done_FreeType (self->priv->library);
+        self->priv->library = NULL;
+    }
+
+    G_OBJECT_CLASS (font_view_model_parent_class)->finalize (obj);
+}
+
+static void
+font_view_model_class_init (FontViewModelClass *klass)
+{
+    GObjectClass *oclass = G_OBJECT_CLASS (klass);
+    oclass->finalize = font_view_model_finalize;
+
+    g_type_class_add_private (klass, sizeof (FontViewModelPrivate));
+}
+
+GtkTreeModel *
+font_view_model_new (void)
+{
+    return g_object_new (FONT_VIEW_TYPE_MODEL, NULL);
+}
+
diff --git a/font-viewer/font-model.h b/font-viewer/font-model.h
new file mode 100644
index 00000000..869e54d3
--- /dev/null
+++ b/font-viewer/font-model.h
@@ -0,0 +1,67 @@
+/* -*- mode: C; c-basic-offset: 4 -*-
+ * mate-font-viewer
+ *
+ * Copyright (C) 2012 Cosimo Cecchi <[email protected]>
+ *
+ * based on font-method.c code from
+ *
+ * fontilus - a collection of font utilities for MATE
+ * Copyright (C) 2002-2003  James Henstridge <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef __FONT_VIEW_MODEL_H__
+#define __FONT_VIEW_MODEL_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+typedef enum {
+  COLUMN_NAME,
+  COLUMN_POINTER,
+  COLUMN_PATH,
+  COLUMN_ICON,
+  NUM_COLUMNS
+} FontViewModelColumns;
+
+typedef struct _FontViewModelPrivate FontViewModelPrivate;
+
+#define FONT_VIEW_TYPE_MODEL font_view_model_get_type()
+#define FONT_VIEW_MODEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), FONT_VIEW_TYPE_MODEL, FontViewModel))
+
+typedef struct {
+  GtkListStore parent;
+
+  FontViewModelPrivate *priv;
+} FontViewModel;
+
+typedef struct {
+  GtkListStoreClass parent_class;
+} FontViewModelClass;
+
+GType font_view_model_get_type (void);
+GtkTreeModel * font_view_model_new (void);
+
+gboolean font_view_model_get_iter_for_file (FontViewModel *self,
+                                            const gchar *file,
+                                            GtkTreeIter *iter);
+
+G_END_DECLS
+
+#endif /* __FONT_VIEW_MODEL_H__ */
+