moving from https://github.com/perberos/mate-desktop-environment

author: Perberos <[email protected]> 2011-12-01 22:24:23 -0300
committer: Perberos <[email protected]> 2011-12-01 22:24:23 -0300
commit: 0e004c696b0e68b2cff37a4c3315b022a35eaf43 (patch)
tree: 43261e815529cb9518ed7be37af13b846af8b26b /src/caja-image-properties-page.c
download: caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.bz2
caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.xz
1 files changed, 745 insertions, 0 deletions
diff --git a/src/caja-image-properties-page.c b/src/caja-image-properties-page.c
new file mode 100644
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+++ b/src/caja-image-properties-page.c
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+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+
+/*
+ * Copyright (C) 2004 Red Hat, Inc
+ * Copyright (c) 2007 Novell, 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.
+ *
+ * Author: Alexander Larsson <[email protected]>
+ * XMP support by Hubert Figuiere <[email protected]>
+ */
+
+#include <config.h>
+#include "caja-image-properties-page.h"
+
+#include <gtk/gtk.h>
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+#include <eel/eel-vfs-extensions.h>
+#include <libcaja-extension/caja-property-page-provider.h>
+#include <libcaja-private/caja-module.h>
+#include <string.h>
+
+#ifdef HAVE_EXIF
+#include <libexif/exif-data.h>
+#include <libexif/exif-ifd.h>
+#include <libexif/exif-loader.h>
+#endif
+#ifdef HAVE_EXEMPI
+#include <exempi/xmp.h>
+#include <exempi/xmpconsts.h>
+#endif
+
+#define LOAD_BUFFER_SIZE 8192
+
+struct CajaImagePropertiesPageDetails
+{
+ GCancellable *cancellable;
+ GtkWidget *vbox;
+ GtkWidget *loading_label;
+ GdkPixbufLoader *loader;
+ gboolean got_size;
+ gboolean pixbuf_still_loading;
+ char buffer[LOAD_BUFFER_SIZE];
+ int width;
+ int height;
+#ifdef HAVE_EXIF
+ ExifLoader *exifldr;
+#endif /*HAVE_EXIF*/
+#ifdef HAVE_EXEMPI
+ XmpPtr xmp;
+#endif
+};
+
+#ifdef HAVE_EXIF
+struct ExifAttribute
+{
+ ExifTag tag;
+ char *value;
+ gboolean found;
+};
+#endif /*HAVE_EXIF*/
+
+enum
+{
+ PROP_URI
+};
+
+typedef struct
+{
+ GObject parent;
+} CajaImagePropertiesPageProvider;
+
+typedef struct
+{
+ GObjectClass parent;
+} CajaImagePropertiesPageProviderClass;
+
+
+static GType caja_image_properties_page_provider_get_type (void);
+static void property_page_provider_iface_init (CajaPropertyPageProviderIface *iface);
+
+
+G_DEFINE_TYPE (CajaImagePropertiesPage, caja_image_properties_page, GTK_TYPE_VBOX);
+
+G_DEFINE_TYPE_WITH_CODE (CajaImagePropertiesPageProvider, caja_image_properties_page_provider, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (CAJA_TYPE_PROPERTY_PAGE_PROVIDER,
+ property_page_provider_iface_init));
+
+static void
+caja_image_properties_page_finalize (GObject *object)
+{
+ CajaImagePropertiesPage *page;
+
+ page = CAJA_IMAGE_PROPERTIES_PAGE (object);
+
+ if (page->details->cancellable)
+ {
+ g_cancellable_cancel (page->details->cancellable);
+ g_object_unref (page->details->cancellable);
+ page->details->cancellable = NULL;
+ }
+
+ G_OBJECT_CLASS (caja_image_properties_page_parent_class)->finalize (object);
+}
+
+static void
+file_close_callback (GObject *object,
+ GAsyncResult *res,
+ gpointer data)
+{
+ CajaImagePropertiesPage *page;
+ GInputStream *stream;
+
+ page = CAJA_IMAGE_PROPERTIES_PAGE (data);
+ stream = G_INPUT_STREAM (object);
+
+ g_input_stream_close_finish (stream, res, NULL);
+
+ g_object_unref (page->details->cancellable);
+ page->details->cancellable = NULL;
+}
+
+static GtkWidget *
+append_label (GtkWidget *vbox,
+ const char *str)
+{
+ GtkWidget *label;
+
+ label = gtk_label_new (NULL);
+ gtk_label_set_markup (GTK_LABEL (label), str);
+ gtk_misc_set_alignment (GTK_MISC (label), 0, 0);
+ gtk_label_set_selectable (GTK_LABEL (label), TRUE);
+
+ /* setting can_focus to FALSE will allow to make the label
+ * selectable but without the cursor showing.
+ */
+ gtk_widget_set_can_focus (label, FALSE);
+
+ gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
+ gtk_widget_show (label);
+
+ return label;
+}
+
+static GtkWidget *
+append_label_take_str (GtkWidget *vbox,
+ char *str)
+{
+ GtkWidget *retval;
+
+ retval = append_label (vbox, str);
+ g_free (str);
+
+ return retval;
+}
+
+#ifdef HAVE_EXIF
+static char *
+exif_string_to_utf8 (const char *exif_str)
+{
+ char *utf8_str;
+
+ if (g_utf8_validate (exif_str, -1, NULL))
+ {
+ return g_strdup (exif_str);
+ }
+
+ utf8_str = g_locale_to_utf8 (exif_str, -1, NULL, NULL, NULL);
+ if (utf8_str != NULL)
+ {
+ return utf8_str;
+ }
+
+ return eel_make_valid_utf8 (exif_str);
+}
+
+static void
+exif_content_callback (ExifContent *content, gpointer data)
+{
+ struct ExifAttribute *attribute;
+#ifndef HAVE_OLD_EXIF
+ char b[1024];
+#endif
+
+ attribute = (struct ExifAttribute *)data;
+ if (attribute->found)
+ {
+ return;
+ }
+
+#ifdef HAVE_OLD_EXIF
+ attribute->value = g_strdup (exif_content_get_value (content, attribute->tag));
+#else
+ attribute->value = g_strdup (exif_content_get_value (content, attribute->tag, b, sizeof(b)));
+#endif
+ if (attribute->value != NULL)
+ {
+ attribute->found = TRUE;
+ }
+}
+
+static char *
+exifdata_get_tag_name_utf8 (ExifTag tag)
+{
+ return exif_string_to_utf8 (exif_tag_get_name (tag));
+}
+
+static char *
+exifdata_get_tag_value_utf8 (ExifData *data, ExifTag tag)
+{
+ struct ExifAttribute attribute;
+ char *utf8_value;
+
+ attribute.tag = tag;
+ attribute.value = NULL;
+ attribute.found = FALSE;
+
+ exif_data_foreach_content (data, exif_content_callback, &attribute);
+
+ if (attribute.found)
+ {
+ utf8_value = exif_string_to_utf8 (attribute.value);
+ g_free (attribute.value);
+ }
+ else
+ {
+ utf8_value = NULL;
+ }
+
+ return utf8_value;
+}
+
+static gboolean
+append_tag_value_pair (CajaImagePropertiesPage *page,
+ ExifData *data,
+ ExifTag tag,
+ char *description)
+{
+ char *utf_attribute;
+ char *utf_value;
+
+ utf_attribute = exifdata_get_tag_name_utf8 (tag);
+ utf_value = exifdata_get_tag_value_utf8 (data, tag);
+
+ if ((utf_attribute == NULL) || (utf_value == NULL))
+ {
+ g_free (utf_attribute);
+ g_free (utf_value);
+ return FALSE;
+ }
+
+ append_label_take_str
+ (page->details->vbox,
+ g_strdup_printf ("<b>%s:</b> %s",
+ description ? description : utf_attribute,
+ utf_value));
+
+ g_free (utf_attribute);
+ g_free (utf_value);
+ return TRUE;
+}
+
+static void
+append_exifdata_string (ExifData *exifdata, CajaImagePropertiesPage *page)
+{
+ if (exifdata && exifdata->ifd[0] && exifdata->ifd[0]->count)
+ {
+ append_tag_value_pair (page, exifdata, EXIF_TAG_MAKE, _("Camera Brand"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_MODEL, _("Camera Model"));
+
+ /* Choose which date to show in order of relevance */
+ if (!append_tag_value_pair (page, exifdata, EXIF_TAG_DATE_TIME_ORIGINAL, _("Date Taken")))
+ {
+ if (!append_tag_value_pair (page, exifdata, EXIF_TAG_DATE_TIME_DIGITIZED, _("Date Digitized")))
+ {
+ append_tag_value_pair (page, exifdata, EXIF_TAG_DATE_TIME, _("Date Modified"));
+ }
+ }
+
+ append_tag_value_pair (page, exifdata, EXIF_TAG_EXPOSURE_TIME, _("Exposure Time"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_APERTURE_VALUE, _("Aperture Value"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_ISO_SPEED_RATINGS, _("ISO Speed Rating"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_FLASH,_("Flash Fired"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_METERING_MODE, _("Metering Mode"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_EXPOSURE_PROGRAM, _("Exposure Program"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_FOCAL_LENGTH,_("Focal Length"));
+ append_tag_value_pair (page, exifdata, EXIF_TAG_SOFTWARE, _("Software"));
+ }
+}
+#endif /*HAVE_EXIF*/
+
+#ifdef HAVE_EXEMPI
+static void
+append_xmp_value_pair (CajaImagePropertiesPage *page,
+ XmpPtr xmp,
+ const char *ns,
+ const char *propname,
+ char *descr)
+{
+ uint32_t options;
+ XmpStringPtr value;
+
+ value = xmp_string_new();
+#ifdef HAVE_EXEMPI_NEW_API
+ if (xmp_get_property (xmp, ns, propname, value, &options))
+ {
+#else
+ if (xmp_get_property_and_bits (xmp, ns, propname, value, &options))
+ {
+#endif
+ if (XMP_IS_PROP_SIMPLE (options))
+ {
+ append_label_take_str
+ (page->details->vbox,
+ g_strdup_printf ("<b>%s:</b> %s",
+ descr, xmp_string_cstr (value)));
+ }
+ else if (XMP_IS_PROP_ARRAY (options))
+ {
+ XmpIteratorPtr iter;
+
+ iter = xmp_iterator_new (xmp, ns, propname, XMP_ITER_JUSTLEAFNODES);
+ if (iter)
+ {
+ GString *str;
+ gboolean first = TRUE;
+
+ str = g_string_new (NULL);
+
+ g_string_append_printf (str, "<b>%s:</b> ",
+ descr);
+ while (xmp_iterator_next (iter, NULL, NULL, value, &options)
+ && !XMP_IS_PROP_QUALIFIER(options))
+ {
+ if (!first)
+ {
+ g_string_append_printf (str, ", ");
+ }
+ else
+ {
+ first = FALSE;
+ }
+ g_string_append_printf (str,
+ "%s",
+ xmp_string_cstr(value));
+ }
+ xmp_iterator_free(iter);
+ append_label_take_str (page->details->vbox,
+ g_string_free (str, FALSE));
+ }
+ }
+ }
+ xmp_string_free(value);
+}
+
+static void
+append_xmpdata_string (XmpPtr xmp, CajaImagePropertiesPage *page)
+{
+ if (xmp != NULL)
+ {
+ append_xmp_value_pair (page, xmp, NS_IPTC4XMP, "Location", _("Location"));
+ append_xmp_value_pair (page, xmp, NS_DC, "description", _("Description"));
+ append_xmp_value_pair (page, xmp, NS_DC, "subject", _("Keywords"));
+ append_xmp_value_pair (page, xmp, NS_DC, "creator", _("Creator"));
+ append_xmp_value_pair (page, xmp, NS_DC, "rights", _("Copyright"));
+ append_xmp_value_pair (page, xmp, NS_XAP,"Rating", _("Rating"));
+ /* TODO add CC licenses */
+ }
+}
+#endif
+
+static void
+load_finished (CajaImagePropertiesPage *page)
+{
+ GdkPixbufFormat *format;
+ char *name, *desc;
+
+ gtk_widget_destroy (page->details->loading_label);
+
+ if (page->details->got_size)
+ {
+#ifdef HAVE_EXIF
+ ExifData *exif_data;
+#endif
+
+ format = gdk_pixbuf_loader_get_format (page->details->loader);
+
+ name = gdk_pixbuf_format_get_name (format);
+ desc = gdk_pixbuf_format_get_description (format);
+ append_label_take_str
+ (page->details->vbox,
+ g_strdup_printf ("<b>%s</b> %s (%s)",
+ _("Image Type:"), name, desc));
+ append_label_take_str
+ (page->details->vbox,
+ g_strdup_printf (ngettext ("<b>Width:</b> %d pixel",
+ "<b>Width:</b> %d pixels",
+ page->details->width),
+ page->details->width));
+ append_label_take_str
+ (page->details->vbox,
+ g_strdup_printf (ngettext ("<b>Height:</b> %d pixel",
+ "<b>Height:</b> %d pixels",
+ page->details->height),
+ page->details->height));
+ g_free (name);
+ g_free (desc);
+
+#ifdef HAVE_EXIF
+ exif_data = exif_loader_get_data (page->details->exifldr);
+ append_exifdata_string (exif_data, page);
+ exif_data_unref (exif_data);
+#endif /*HAVE_EXIF*/
+#ifdef HAVE_EXEMPI
+ append_xmpdata_string (page->details->xmp, page);
+#endif /*HAVE EXEMPI*/
+ }
+ else
+ {
+ append_label (page->details->vbox,
+ _("Failed to load image information"));
+ }
+
+ if (page->details->loader != NULL)
+ {
+ gdk_pixbuf_loader_close (page->details->loader, NULL);
+ g_object_unref (page->details->loader);
+ page->details->loader = NULL;
+ }
+#ifdef HAVE_EXIF
+ if (page->details->exifldr != NULL)
+ {
+ exif_loader_unref (page->details->exifldr);
+ page->details->exifldr = NULL;
+ }
+#endif /*HAVE_EXIF*/
+#ifdef HAVE_EXEMPI
+ if (page->details->xmp != NULL)
+ {
+ xmp_free(page->details->xmp);
+ page->details->xmp = NULL;
+ }
+#endif
+}
+
+static void
+file_read_callback (GObject *object,
+ GAsyncResult *res,
+ gpointer data)
+{
+ CajaImagePropertiesPage *page;
+ GInputStream *stream;
+ gssize count_read;
+ GError *error;
+ int exif_still_loading;
+ gboolean done_reading;
+
+ page = CAJA_IMAGE_PROPERTIES_PAGE (data);
+ stream = G_INPUT_STREAM (object);
+
+ error = NULL;
+ done_reading = FALSE;
+ count_read = g_input_stream_read_finish (stream, res, &error);
+
+ if (count_read > 0)
+ {
+
+ g_assert (count_read <= sizeof(page->details->buffer));
+
+#ifdef HAVE_EXIF
+ exif_still_loading = exif_loader_write (page->details->exifldr,
+ page->details->buffer,
+ count_read);
+#else
+ exif_still_loading = 0;
+#endif
+
+ if (page->details->pixbuf_still_loading)
+ {
+ if (!gdk_pixbuf_loader_write (page->details->loader,
+ page->details->buffer,
+ count_read,
+ NULL))
+ {
+ page->details->pixbuf_still_loading = FALSE;
+ }
+ }
+
+ if (page->details->pixbuf_still_loading ||
+ (exif_still_loading == 1))
+ {
+ g_input_stream_read_async (G_INPUT_STREAM (stream),
+ page->details->buffer,
+ sizeof (page->details->buffer),
+ 0,
+ page->details->cancellable,
+ file_read_callback,
+ page);
+ }
+ else
+ {
+ done_reading = TRUE;
+ }
+ }
+ else
+ {
+ /* either EOF, cancelled or an error occurred */
+ done_reading = TRUE;
+ }
+
+ if (done_reading)
+ {
+ load_finished (page);
+ g_input_stream_close_async (stream,
+ 0,
+ page->details->cancellable,
+ file_close_callback,
+ page);
+ }
+}
+
+static void
+size_prepared_callback (GdkPixbufLoader *loader,
+ int width,
+ int height,
+ gpointer callback_data)
+{
+ CajaImagePropertiesPage *page;
+
+ page = CAJA_IMAGE_PROPERTIES_PAGE (callback_data);
+
+ page->details->height = height;
+ page->details->width = width;
+ page->details->got_size = TRUE;
+ page->details->pixbuf_still_loading = FALSE;
+}
+
+static void
+file_open_callback (GObject *object,
+ GAsyncResult *res,
+ gpointer data)
+{
+ CajaImagePropertiesPage *page;
+ GFile *file;
+ GFileInputStream *stream;
+ GError *error;
+
+ page = CAJA_IMAGE_PROPERTIES_PAGE (data);
+ file = G_FILE (object);
+
+ error = NULL;
+ stream = g_file_read_finish (file, res, &error);
+ if (stream)
+ {
+ page->details->loader = gdk_pixbuf_loader_new ();
+ page->details->pixbuf_still_loading = TRUE;
+ page->details->width = 0;
+ page->details->height = 0;
+#ifdef HAVE_EXIF
+ page->details->exifldr = exif_loader_new ();
+#endif /*HAVE_EXIF*/
+
+ g_signal_connect (page->details->loader,
+ "size_prepared",
+ G_CALLBACK (size_prepared_callback),
+ page);
+
+ g_input_stream_read_async (G_INPUT_STREAM (stream),
+ page->details->buffer,
+ sizeof (page->details->buffer),
+ 0,
+ page->details->cancellable,
+ file_read_callback,
+ page);
+
+ g_object_unref (stream);
+ }
+}
+
+static void
+load_location (CajaImagePropertiesPage *page,
+ const char *location)
+{
+ GFile *file;
+
+ g_assert (CAJA_IS_IMAGE_PROPERTIES_PAGE (page));
+ g_assert (location != NULL);
+
+ page->details->cancellable = g_cancellable_new ();
+ file = g_file_new_for_uri (location);
+
+#ifdef HAVE_EXEMPI
+ {
+ /* Current Exempi does not support setting custom IO to be able to use Mate-vfs */
+ /* So it will only work with local files. Future version might remove this limitation */
+ XmpFilePtr xf;
+ char *localname;
+
+ localname = g_filename_from_uri (location, NULL, NULL);
+ if (localname)
+ {
+ xf = xmp_files_open_new (localname, 0);
+ page->details->xmp = xmp_files_get_new_xmp (xf); /* only load when loading */
+ xmp_files_close (xf, 0);
+ g_free (localname);
+ }
+ else
+ {
+ page->details->xmp = NULL;
+ }
+ }
+#endif /*HAVE_EXEMPI*/
+
+ g_file_read_async (file,
+ 0,
+ page->details->cancellable,
+ file_open_callback,
+ page);
+
+ g_object_unref (file);
+}
+
+static void
+caja_image_properties_page_class_init (CajaImagePropertiesPageClass *class)
+{
+ GObjectClass *object_class;
+
+ object_class = G_OBJECT_CLASS (class);
+
+ object_class->finalize = caja_image_properties_page_finalize;
+
+ g_type_class_add_private (object_class, sizeof(CajaImagePropertiesPageDetails));
+}
+
+static void
+caja_image_properties_page_init (CajaImagePropertiesPage *page)
+{
+ page->details = G_TYPE_INSTANCE_GET_PRIVATE (page,
+ CAJA_TYPE_IMAGE_PROPERTIES_PAGE,
+ CajaImagePropertiesPageDetails);
+
+ gtk_box_set_homogeneous (GTK_BOX (page), FALSE);
+ gtk_box_set_spacing (GTK_BOX (page), 2);
+ gtk_container_set_border_width (GTK_CONTAINER (page), 6);
+
+ page->details->vbox = gtk_vbox_new (FALSE, 6);
+ page->details->loading_label =
+ append_label (page->details->vbox,_("loading..."));
+ gtk_box_pack_start (GTK_BOX (page),
+ page->details->vbox,
+ FALSE, TRUE, 2);
+
+ gtk_widget_show_all (GTK_WIDGET (page));
+}
+
+static GList *
+get_property_pages (CajaPropertyPageProvider *provider,
+ GList *files)
+{
+ GList *pages;
+ CajaPropertyPage *real_page;
+ CajaFileInfo *file;
+ char *uri;
+ CajaImagePropertiesPage *page;
+
+ /* Only show the property page if 1 file is selected */
+ if (!files || files->next != NULL)
+ {
+ return NULL;
+ }
+
+ file = CAJA_FILE_INFO (files->data);
+
+ if (!
+ (caja_file_info_is_mime_type (file, "image/x-bmp") ||
+ caja_file_info_is_mime_type (file, "image/x-ico") ||
+ caja_file_info_is_mime_type (file, "image/jpeg") ||
+ caja_file_info_is_mime_type (file, "image/gif") ||
+ caja_file_info_is_mime_type (file, "image/png") ||
+ caja_file_info_is_mime_type (file, "image/pnm") ||
+ caja_file_info_is_mime_type (file, "image/ras") ||
+ caja_file_info_is_mime_type (file, "image/tga") ||
+ caja_file_info_is_mime_type (file, "image/tiff") ||
+ caja_file_info_is_mime_type (file, "image/wbmp") ||
+ caja_file_info_is_mime_type (file, "image/x-xbitmap") ||
+ caja_file_info_is_mime_type (file, "image/x-xpixmap")))
+ {
+ return NULL;
+ }
+
+ pages = NULL;
+
+ uri = caja_file_info_get_uri (file);
+
+ page = g_object_new (caja_image_properties_page_get_type (), NULL);
+ load_location (page, uri);
+
+ g_free (uri);
+
+ real_page = caja_property_page_new
+ ("CajaImagePropertiesPage::property_page",
+ gtk_label_new (_("Image")),
+ GTK_WIDGET (page));
+ pages = g_list_append (pages, real_page);
+
+ return pages;
+}
+
+static void
+property_page_provider_iface_init (CajaPropertyPageProviderIface *iface)
+{
+ iface->get_pages = get_property_pages;
+}
+
+
+static void
+caja_image_properties_page_provider_init (CajaImagePropertiesPageProvider *sidebar)
+{
+}
+
+static void
+caja_image_properties_page_provider_class_init (CajaImagePropertiesPageProviderClass *class)
+{
+}
+
+void
+caja_image_properties_page_register (void)
+{
+ caja_module_add_type (caja_image_properties_page_provider_get_type ());
+}
+
author	Perberos <[email protected]>	2011-12-01 22:24:23 -0300
committer	Perberos <[email protected]>	2011-12-01 22:24:23 -0300
commit	0e004c696b0e68b2cff37a4c3315b022a35eaf43 (patch)
tree	43261e815529cb9518ed7be37af13b846af8b26b /src/caja-image-properties-page.c
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