Adding upstream version 43.2.upstream/43.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 487 insertions, 0 deletions

diff --git a/extensions/image-properties/nautilus-image-properties-model.c b/extensions/image-properties/nautilus-image-properties-model.c
new file mode 100644
index 0000000..930a910
--- /dev/null
+++ b/extensions/image-properties/nautilus-image-properties-model.c
@@ -0,0 +1,487 @@
+/* Copyright (C) 2004 Red Hat, Inc
+ * Copyright (c) 2007 Novell, Inc.
+ * Copyright (c) 2017 Thomas Bechtold <thomasbechtold@jpberlin.de>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Alexander Larsson <alexl@redhat.com>
+ * XMP support by Hubert Figuiere <hfiguiere@novell.com>
+ */
+
+#include "nautilus-image-properties-model.h"
+
+#include <gexiv2/gexiv2.h>
+#include <glib/gi18n.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include <math.h>
+
+#define LOAD_BUFFER_SIZE 8192
+
+typedef struct
+{
+    GListStore *group_model;
+
+    GCancellable *cancellable;
+    GdkPixbufLoader *loader;
+    gboolean got_size;
+    gboolean pixbuf_still_loading;
+    unsigned char buffer[LOAD_BUFFER_SIZE];
+    int width;
+    int height;
+
+    GExiv2Metadata *md;
+    gboolean md_ready;
+} NautilusImagesPropertiesModel;
+
+static void
+nautilus_images_properties_model_free (NautilusImagesPropertiesModel *self)
+{
+    if (self->cancellable != NULL)
+    {
+        g_cancellable_cancel (self->cancellable);
+        g_clear_object (&self->cancellable);
+    }
+    g_free (self);
+}
+
+static void
+append_item (NautilusImagesPropertiesModel *self,
+             const char                    *name,
+             const char                    *value)
+{
+    g_autoptr (NautilusPropertiesItem) item = NULL;
+
+    item = nautilus_properties_item_new (name, value);
+    g_list_store_append (self->group_model, item);
+}
+
+static void
+nautilus_image_properties_model_init (NautilusImagesPropertiesModel *self)
+{
+    self->group_model = g_list_store_new (NAUTILUS_TYPE_PROPERTIES_ITEM);
+}
+
+static void
+append_basic_info (NautilusImagesPropertiesModel *self)
+{
+    GdkPixbufFormat *format;
+    GExiv2Orientation orientation;
+    int width;
+    int height;
+    g_autofree char *name = NULL;
+    g_autofree char *desc = NULL;
+    g_autofree char *value = NULL;
+
+    format = gdk_pixbuf_loader_get_format (self->loader);
+    name = gdk_pixbuf_format_get_name (format);
+    desc = gdk_pixbuf_format_get_description (format);
+    value = g_strdup_printf ("%s (%s)", name, desc);
+
+    append_item (self, _("Image Type"), value);
+
+    orientation = gexiv2_metadata_try_get_orientation (self->md, NULL);
+
+    if (orientation == GEXIV2_ORIENTATION_ROT_90
+        || orientation == GEXIV2_ORIENTATION_ROT_270
+        || orientation == GEXIV2_ORIENTATION_ROT_90_HFLIP
+        || orientation == GEXIV2_ORIENTATION_ROT_90_VFLIP)
+    {
+        width = self->height;
+        height = self->width;
+    }
+    else
+    {
+        width = self->width;
+        height = self->height;
+    }
+
+    g_free (value);
+    value = g_strdup_printf (ngettext ("%d pixel",
+                                       "%d pixels",
+                                       width),
+                             width);
+
+    append_item (self, _("Width"), value);
+
+    g_free (value);
+    value = g_strdup_printf (ngettext ("%d pixel",
+                                       "%d pixels",
+                                       height),
+                             height);
+
+    append_item (self, _("Height"), value);
+}
+
+static void
+append_gexiv2_tag (NautilusImagesPropertiesModel  *self,
+                   const char                    **tag_names,
+                   const char                     *description)
+{
+    g_assert (tag_names != NULL);
+
+    for (const char **i = tag_names; *i != NULL; i++)
+    {
+        if (gexiv2_metadata_try_has_tag (self->md, *i, NULL))
+        {
+            g_autofree char *tag_value = NULL;
+
+            tag_value = gexiv2_metadata_try_get_tag_interpreted_string (self->md, *i, NULL);
+
+            if (description == NULL)
+            {
+                description = gexiv2_metadata_try_get_tag_description (*i, NULL);
+            }
+
+            /* don't add empty tags - try next one */
+            if (strlen (tag_value) > 0)
+            {
+                append_item (self, description, tag_value);
+                break;
+            }
+        }
+    }
+}
+
+static void
+append_gexiv2_info (NautilusImagesPropertiesModel *self)
+{
+    double longitude;
+    double latitude;
+    double altitude;
+
+    /* define tags and its alternatives */
+    const char *title[] = { "Xmp.dc.title", NULL };
+    const char *camera_brand[] = { "Exif.Image.Make", NULL };
+    const char *camera_model[] = { "Exif.Image.Model", "Exif.Image.UniqueCameraModel", NULL };
+    const char *created_on[] = { "Exif.Photo.DateTimeOriginal", "Xmp.xmp.CreateDate", "Exif.Image.DateTime", NULL };
+    const char *exposure_time[] = { "Exif.Photo.ExposureTime", NULL };
+    const char *aperture_value[] = { "Exif.Photo.ApertureValue", NULL };
+    const char *iso_speed_ratings[] = { "Exif.Photo.ISOSpeedRatings", "Xmp.exifEX.ISOSpeed", NULL };
+    const char *flash[] = { "Exif.Photo.Flash", NULL };
+    const char *metering_mode[] = { "Exif.Photo.MeteringMode", NULL };
+    const char *exposure_mode[] = { "Exif.Photo.ExposureMode", NULL };
+    const char *focal_length[] = { "Exif.Photo.FocalLength", NULL };
+    const char *software[] = { "Exif.Image.Software", NULL };
+    const char *description[] = { "Xmp.dc.description", "Exif.Photo.UserComment", NULL };
+    const char *subject[] = { "Xmp.dc.subject", NULL };
+    const char *creator[] = { "Xmp.dc.creator", "Exif.Image.Artist", NULL };
+    const char *rights[] = { "Xmp.dc.rights", NULL };
+    const char *rating[] = { "Xmp.xmp.Rating", NULL };
+
+    if (!self->md_ready)
+    {
+        return;
+    }
+
+    append_gexiv2_tag (self, camera_brand, _("Camera Brand"));
+    append_gexiv2_tag (self, camera_model, _("Camera Model"));
+    append_gexiv2_tag (self, exposure_time, _("Exposure Time"));
+    append_gexiv2_tag (self, exposure_mode, _("Exposure Program"));
+    append_gexiv2_tag (self, aperture_value, _("Aperture Value"));
+    append_gexiv2_tag (self, iso_speed_ratings, _("ISO Speed Rating"));
+    append_gexiv2_tag (self, flash, _("Flash Fired"));
+    append_gexiv2_tag (self, metering_mode, _("Metering Mode"));
+    append_gexiv2_tag (self, focal_length, _("Focal Length"));
+    append_gexiv2_tag (self, software, _("Software"));
+    append_gexiv2_tag (self, title, _("Title"));
+    append_gexiv2_tag (self, description, _("Description"));
+    append_gexiv2_tag (self, subject, _("Keywords"));
+    append_gexiv2_tag (self, creator, _("Creator"));
+    append_gexiv2_tag (self, created_on, _("Created On"));
+    append_gexiv2_tag (self, rights, _("Copyright"));
+    append_gexiv2_tag (self, rating, _("Rating"));
+
+    if (gexiv2_metadata_try_get_gps_info (self->md, &longitude, &latitude, &altitude, NULL))
+    {
+        g_autofree char *gps_coords = NULL;
+
+        gps_coords = g_strdup_printf ("%f° %s %f° %s (%.0f m)",
+                                      fabs (latitude),
+                                      /* Translators: "N" and "S" stand for
+                                       * north and south in GPS coordinates. */
+                                      latitude >= 0 ? _("N") : _("S"),
+                                      fabs (longitude),
+                                      /* Translators: "E" and "W" stand for
+                                       * east and west in GPS coordinates. */
+                                      longitude >= 0 ? _("E") : _("W"),
+                                      altitude);
+
+        append_item (self, _("Coordinates"), gps_coords);
+    }
+}
+
+static void
+load_finished (NautilusImagesPropertiesModel *self)
+{
+    if (self->loader != NULL)
+    {
+        gdk_pixbuf_loader_close (self->loader, NULL);
+    }
+
+    if (self->got_size)
+    {
+        append_basic_info (self);
+        append_gexiv2_info (self);
+    }
+    else
+    {
+        append_item (self, _("Oops! Something went wrong."), _("Failed to load image information"));
+    }
+
+    if (self->loader != NULL)
+    {
+        g_object_unref (self->loader);
+        self->loader = NULL;
+    }
+    self->md_ready = FALSE;
+    g_clear_object (&self->md);
+}
+
+static void
+file_close_callback (GObject      *object,
+                     GAsyncResult *res,
+                     gpointer      data)
+{
+    NautilusImagesPropertiesModel *self;
+    GInputStream *stream;
+
+    self = data;
+    stream = G_INPUT_STREAM (object);
+
+    g_input_stream_close_finish (stream, res, NULL);
+
+    g_clear_object (&self->cancellable);
+}
+
+static void
+file_read_callback (GObject      *object,
+                    GAsyncResult *res,
+                    gpointer      data)
+{
+    NautilusImagesPropertiesModel *self;
+    GInputStream *stream;
+    g_autoptr (GError) error = NULL;
+    gssize count_read;
+    gboolean done_reading;
+
+    self = data;
+    stream = G_INPUT_STREAM (object);
+    count_read = g_input_stream_read_finish (stream, res, &error);
+    done_reading = FALSE;
+
+    if (count_read > 0)
+    {
+        g_assert (count_read <= sizeof (self->buffer));
+
+        if (self->pixbuf_still_loading)
+        {
+            if (!gdk_pixbuf_loader_write (self->loader,
+                                          self->buffer,
+                                          count_read,
+                                          NULL))
+            {
+                self->pixbuf_still_loading = FALSE;
+            }
+        }
+
+        if (self->pixbuf_still_loading)
+        {
+            g_input_stream_read_async (G_INPUT_STREAM (stream),
+                                       self->buffer,
+                                       sizeof (self->buffer),
+                                       G_PRIORITY_DEFAULT,
+                                       self->cancellable,
+                                       file_read_callback,
+                                       self);
+        }
+        else
+        {
+            done_reading = TRUE;
+        }
+    }
+    else
+    {
+        /* either EOF, cancelled or an error occurred */
+        done_reading = TRUE;
+    }
+
+    if (error != NULL)
+    {
+        g_autofree char *uri = NULL;
+
+        uri = g_file_get_uri (G_FILE (object));
+
+        g_warning ("Error reading %s: %s", uri, error->message);
+    }
+
+    if (done_reading)
+    {
+        load_finished (self);
+        g_input_stream_close_async (stream,
+                                    G_PRIORITY_DEFAULT,
+                                    self->cancellable,
+                                    file_close_callback,
+                                    self);
+    }
+}
+
+static void
+size_prepared_callback (GdkPixbufLoader *loader,
+                        int              width,
+                        int              height,
+                        gpointer         callback_data)
+{
+    NautilusImagesPropertiesModel *self;
+
+    self = callback_data;
+
+    self->height = height;
+    self->width = width;
+    self->got_size = TRUE;
+    self->pixbuf_still_loading = FALSE;
+}
+
+typedef struct
+{
+    NautilusImagesPropertiesModel *self;
+    NautilusFileInfo *file_info;
+} FileOpenData;
+
+static void
+file_open_callback (GObject      *object,
+                    GAsyncResult *res,
+                    gpointer      user_data)
+{
+    g_autofree FileOpenData *data = NULL;
+    NautilusImagesPropertiesModel *self;
+    GFile *file;
+    g_autofree char *uri = NULL;
+    g_autoptr (GError) error = NULL;
+    g_autoptr (GFileInputStream) stream = NULL;
+
+    data = user_data;
+    self = data->self;
+    file = G_FILE (object);
+    uri = g_file_get_uri (file);
+    stream = g_file_read_finish (file, res, &error);
+    if (stream != NULL)
+    {
+        g_autofree char *mime_type = NULL;
+
+        mime_type = nautilus_file_info_get_mime_type (data->file_info);
+
+        self->loader = gdk_pixbuf_loader_new_with_mime_type (mime_type, &error);
+        if (error != NULL)
+        {
+            g_warning ("Error creating loader for %s: %s", uri, error->message);
+        }
+        self->pixbuf_still_loading = TRUE;
+        self->width = 0;
+        self->height = 0;
+
+        g_signal_connect (self->loader,
+                          "size-prepared",
+                          G_CALLBACK (size_prepared_callback),
+                          self);
+
+        g_input_stream_read_async (G_INPUT_STREAM (stream),
+                                   self->buffer,
+                                   sizeof (self->buffer),
+                                   G_PRIORITY_DEFAULT,
+                                   self->cancellable,
+                                   file_read_callback,
+                                   self);
+    }
+    else
+    {
+        g_warning ("Error reading %s: %s", uri, error->message);
+        load_finished (self);
+    }
+}
+
+static void
+nautilus_image_properties_model_load_from_file_info (NautilusImagesPropertiesModel *self,
+                                                     NautilusFileInfo              *file_info)
+{
+    g_autofree char *uri = NULL;
+    g_autoptr (GFile) file = NULL;
+    g_autofree char *path = NULL;
+    FileOpenData *data;
+
+    g_return_if_fail (file_info != NULL);
+
+    self->cancellable = g_cancellable_new ();
+
+    uri = nautilus_file_info_get_uri (file_info);
+    file = g_file_new_for_uri (uri);
+    path = g_file_get_path (file);
+
+    /* gexiv2 metadata init */
+    self->md_ready = gexiv2_initialize ();
+    if (!self->md_ready)
+    {
+        g_warning ("Unable to initialize gexiv2");
+    }
+    else
+    {
+        self->md = gexiv2_metadata_new ();
+        if (path != NULL)
+        {
+            g_autoptr (GError) error = NULL;
+
+            if (!gexiv2_metadata_open_path (self->md, path, &error))
+            {
+                g_warning ("gexiv2 metadata not supported for '%s': %s", path, error->message);
+                self->md_ready = FALSE;
+            }
+        }
+        else
+        {
+            self->md_ready = FALSE;
+        }
+    }
+
+    data = g_new0 (FileOpenData, 1);
+
+    data->self = self;
+    data->file_info = file_info;
+
+    g_file_read_async (file,
+                       G_PRIORITY_DEFAULT,
+                       self->cancellable,
+                       file_open_callback,
+                       data);
+}
+
+NautilusPropertiesModel *
+nautilus_image_properties_model_new (NautilusFileInfo *file_info)
+{
+    NautilusImagesPropertiesModel *self;
+    NautilusPropertiesModel *model;
+
+    self = g_new0 (NautilusImagesPropertiesModel, 1);
+
+    nautilus_image_properties_model_init (self);
+    nautilus_image_properties_model_load_from_file_info (self, file_info);
+
+    model = nautilus_properties_model_new (_("Image Properties"),
+                                           G_LIST_MODEL (self->group_model));
+
+    g_object_weak_ref (G_OBJECT (model),
+                       (GWeakNotify) nautilus_images_properties_model_free,
+                       self);
+
+    return model;
+}