[gthumb] show the color profile description in the property view

[Paolo Bacchilega <paobac src gnome org>]

commit 1a614b05b6f3ca9110714bde39aac40d8ef38643
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Tue Jun 27 17:00:20 2017 +0200

    show the color profile description in the property view

 extensions/image_viewer/gth-image-viewer-page.c |   25 ++++++++++++-
 gthumb/gth-icc-profile.c                        |   43 +++++++++++++++++++++-
 gthumb/gth-icc-profile.h                        |    1 +
 gthumb/gth-main-default-metadata.c              |    1 +
 4 files changed, 66 insertions(+), 4 deletions(-)
---
diff --git a/extensions/image_viewer/gth-image-viewer-page.c b/extensions/image_viewer/gth-image-viewer-page.c
index 4afe487..fa67c96 100644
--- a/extensions/image_viewer/gth-image-viewer-page.c
+++ b/extensions/image_viewer/gth-image-viewer-page.c
@@ -97,6 +97,7 @@ struct _GthImageViewerPagePrivate {
        guint              file_popup_merge_id;
        GthImageHistory   *history;
        GthFileData       *file_data;
+       GFileInfo         *updated_info;
        gboolean           active;
        gboolean           image_changed;
        gboolean           loading_image;
@@ -127,6 +128,7 @@ gth_image_viewer_page_file_loaded (GthImageViewerPage *self,
 
        gth_viewer_page_file_loaded (GTH_VIEWER_PAGE (self),
                                     self->priv->file_data,
+                                    self->priv->updated_info,
                                     success);
 }
 
@@ -1319,13 +1321,29 @@ preloader_load_ready_cb (GObject        *source_object,
                gth_image_viewer_get_original_size (GTH_IMAGE_VIEWER (self->priv->viewer),
                                                    &original_width,
                                                    &original_height);
-       g_file_info_set_attribute_int32 (self->priv->file_data->info,
+       g_file_info_set_attribute_int32 (self->priv->updated_info,
                                         "frame::width",
                                         original_width);
-       g_file_info_set_attribute_int32 (self->priv->file_data->info,
+       g_file_info_set_attribute_int32 (self->priv->updated_info,
                                         "frame::height",
                                         original_height);
 
+       {
+               GthICCProfile *profile;
+
+               profile = gth_image_get_icc_profile (image);
+               if (profile != NULL) {
+                       char *desc = gth_icc_profile_get_description (profile);
+
+                       if (desc != NULL) {
+                               g_file_info_set_attribute_string (self->priv->updated_info,
+                                                                 "Loaded::Image::ColorProfile",
+                                                                 desc);
+                               g_free (desc);
+                       }
+               }
+       }
+
        gth_image_viewer_page_file_loaded (self, TRUE);
        update_image_quality_if_required (self);
 
@@ -1350,6 +1368,8 @@ _gth_image_viewer_page_load (GthImageViewerPage *self,
        if (self->priv->file_data != file_data) {
                _g_object_unref (self->priv->file_data);
                self->priv->file_data = gth_file_data_dup (file_data);
+               _g_object_unref (self->priv->updated_info);
+               self->priv->updated_info = g_file_info_new ();
        }
        self->priv->image_changed = FALSE;
        self->priv->loading_image = TRUE;
@@ -1918,6 +1938,7 @@ gth_image_viewer_page_init (GthImageViewerPage *self)
        self->priv->file_popup_merge_id = 0;
        self->priv->history = gth_image_history_new ();
        self->priv->file_data = NULL;
+       self->priv->updated_info = NULL;
        self->priv->active = FALSE;
        self->priv->image_changed = FALSE;
        self->priv->loading_image = FALSE;
diff --git a/gthumb/gth-icc-profile.c b/gthumb/gth-icc-profile.c
index 13323e2..5c63d85 100644
--- a/gthumb/gth-icc-profile.c
+++ b/gthumb/gth-icc-profile.c
@@ -26,6 +26,7 @@
 #include <lcms2.h>
 #endif /* HAVE_LCMS2 */
 #include "gth-icc-profile.h"
+#include "glib-utils.h"
 
 
 struct _GthICCProfilePrivate {
@@ -158,6 +159,8 @@ gth_icc_profile_new (const char    *id,
 {
        GthICCProfile *icc_profile;
 
+       g_return_val_if_fail (profile != NULL, NULL);
+
        icc_profile = g_object_new (GTH_TYPE_ICC_PROFILE, NULL);
        if (! gth_icc_profile_id_is_unknown (id))
                icc_profile->priv->id = g_strdup (id);
@@ -197,11 +200,47 @@ gth_icc_profile_new_srgb (void)
 const char *
 gth_icc_profile_get_id (GthICCProfile *self)
 {
-       g_return_val_if_fail (self != NULL, NULL);
+       g_return_val_if_fail (GTH_IS_ICC_PROFILE (self), NULL);
        return self->priv->id;
 }
 
 
+char *
+gth_icc_profile_get_description        (GthICCProfile *self)
+{
+#ifdef HAVE_LCMS2
+
+       GString         *color_profile;
+       cmsHPROFILE      hProfile;
+       const int        buffer_size = 128;
+       wchar_t          buffer[buffer_size];
+       cmsUInt32Number  size;
+       char            *result;
+
+       color_profile = g_string_new ("");
+       hProfile = (cmsHPROFILE) gth_icc_profile_get_profile (self);
+       size = cmsGetProfileInfo (hProfile, cmsInfoDescription, "en", "US", (wchar_t *) buffer, buffer_size);
+       if (size > 0) {
+               for (int i = 0; (i < size) && (buffer[i] != 0); i++)
+                       g_string_append_c (color_profile, buffer[i]);
+       }
+
+       result = NULL;
+       if (color_profile->len > 0)
+               result = _g_utf8_try_from_any (color_profile->str);
+
+       g_string_free (color_profile, TRUE);
+
+       return result;
+
+#else
+
+       return NULL;
+
+#endif
+}
+
+
 gboolean
 gth_icc_profile_id_is_unknown (const char *id)
 {
@@ -221,7 +260,7 @@ gboolean
 gth_icc_profile_equal (GthICCProfile *a,
                       GthICCProfile *b)
 {
-       g_return_val_if_fail ((a == NULL) || (b == NULL), NULL);
+       g_return_val_if_fail ((a == NULL) || (b == NULL), FALSE);
 
        if (gth_icc_profile_id_is_unknown (a->priv->id) || gth_icc_profile_id_is_unknown (b->priv->id))
                return FALSE;
diff --git a/gthumb/gth-icc-profile.h b/gthumb/gth-icc-profile.h
index 430ff09..bb78a19 100644
--- a/gthumb/gth-icc-profile.h
+++ b/gthumb/gth-icc-profile.h
@@ -81,6 +81,7 @@ GthICCProfile *               gth_icc_profile_new             (const char      *id,
                                                         GthCMSProfile    profile);
 GthICCProfile *                gth_icc_profile_new_srgb        (void);
 const char *           gth_icc_profile_get_id          (GthICCProfile   *icc_profile);
+char *                  gth_icc_profile_get_description        (GthICCProfile   *icc_profile);
 gboolean                gth_icc_profile_id_is_unknown   (const char      *id);
 GthCMSProfile          gth_icc_profile_get_profile     (GthICCProfile   *icc_profile);
 gboolean               gth_icc_profile_equal           (GthICCProfile   *a,
diff --git a/gthumb/gth-main-default-metadata.c b/gthumb/gth-main-default-metadata.c
index c647ad0..8407ed5 100644
--- a/gthumb/gth-main-default-metadata.c
+++ b/gthumb/gth-main-default-metadata.c
@@ -54,6 +54,7 @@ GthMetadataInfo file_metadata_info[] = {
        { "Embedded::Photo::FocalLength", N_("Focal Length"), "general", 16, NULL, 
GTH_METADATA_ALLOW_EVERYWHERE  },
        { "Embedded::Photo::Flash", N_("Flash"), "general", 17, NULL, GTH_METADATA_ALLOW_EVERYWHERE  },
        { "Embedded::Photo::CameraModel", N_("Camera Model"), "general", 18, NULL, 
GTH_METADATA_ALLOW_EVERYWHERE  },
+       { "Loaded::Image::ColorProfile", N_("Color Profile"), "general", 19, NULL, 
GTH_METADATA_ALLOW_IN_PROPERTIES_VIEW },
 
        { "general::datetime", N_("General Date & Time"), "general", 20, NULL, GTH_METADATA_ALLOW_EVERYWHERE 
},
        { "general::title", N_("Title"), "general", 21, NULL, GTH_METADATA_ALLOW_EVERYWHERE },