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gimp/libgimp/gimpimagemetadata.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-2000 Peter Mattis and Spencer Kimball
*
* gimpimagemetadata.c
*
* 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 3 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, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <sys/time.h>
#include <gtk/gtk.h>
#include <gexiv2/gexiv2.h>
#include "gimp.h"
#include "gimpui.h"
#include "gimpimagemetadata.h"
#include "libgimp-intl.h"
typedef struct
{
gchar *tag;
gint type;
} XmpStructs;
static void gimp_image_metadata_rotate (GimpImage *image,
GExiv2Orientation orientation);
static GdkPixbuf * gimp_image_metadata_rotate_pixbuf (GdkPixbuf *pixbuf,
GExiv2Orientation orientation);
static void gimp_image_metadata_rotate_query (GimpImage *image,
const gchar *mime_type,
GimpMetadata *metadata,
gboolean interactive);
static gboolean gimp_image_metadata_rotate_dialog (GimpImage *image,
GExiv2Orientation orientation,
const gchar *parasite_name);
/* public functions */
/**
* gimp_image_metadata_load_prepare:
* @image: The image
* @mime_type: The loaded file's mime-type
* @file: The file to load the metadata from
* @error: Return location for error
*
* Loads and returns metadata from @file to be passed into
* gimp_image_metadata_load_finish().
*
* Returns: (transfer full): The file's metadata.
*
* Since: 2.10
*/
GimpMetadata *
gimp_image_metadata_load_prepare (GimpImage *image,
const gchar *mime_type,
GFile *file,
GError **error)
{
GimpMetadata *metadata;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (mime_type != NULL, NULL);
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
metadata = gimp_metadata_load_from_file (file, error);
if (metadata)
{
gexiv2_metadata_erase_exif_thumbnail (GEXIV2_METADATA (metadata));
}
return metadata;
}
/**
* gimp_image_metadata_load_finish:
* @image: The image
* @mime_type: The loaded file's mime-type
* @metadata: The metadata to set on the image
* @flags: Flags to specify what of the metadata to apply to the image
* @interactive: Whether this function is allowed to query info with dialogs
*
* Applies the @metadata previously loaded with
* gimp_image_metadata_load_prepare() to the image, taking into account
* the passed @flags.
*
* Since: 2.10
*/
void
gimp_image_metadata_load_finish (GimpImage *image,
const gchar *mime_type,
GimpMetadata *metadata,
GimpMetadataLoadFlags flags,
gboolean interactive)
{
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (mime_type != NULL);
g_return_if_fail (GEXIV2_IS_METADATA (metadata));
if (flags & GIMP_METADATA_LOAD_COMMENT)
{
gchar *comment;
comment = gexiv2_metadata_get_tag_interpreted_string (GEXIV2_METADATA (metadata),
"Exif.Photo.UserComment");
if (! comment)
comment = gexiv2_metadata_get_tag_interpreted_string (GEXIV2_METADATA (metadata),
"Exif.Image.ImageDescription");
if (comment)
{
GimpParasite *parasite;
parasite = gimp_parasite_new ("gimp-comment",
GIMP_PARASITE_PERSISTENT,
strlen (comment) + 1,
comment);
g_free (comment);
gimp_image_attach_parasite (image, parasite);
gimp_parasite_free (parasite);
}
}
if (flags & GIMP_METADATA_LOAD_RESOLUTION)
{
gdouble xres;
gdouble yres;
GimpUnit unit;
if (gimp_metadata_get_resolution (metadata, &xres, &yres, &unit))
{
gimp_image_set_resolution (image, xres, yres);
gimp_image_set_unit (image, unit);
}
}
if (flags & GIMP_METADATA_LOAD_ORIENTATION)
{
gimp_image_metadata_rotate_query (image, mime_type,
metadata, interactive);
}
if (flags & GIMP_METADATA_LOAD_COLORSPACE)
{
GimpColorProfile *profile = gimp_image_get_color_profile (image);
/* only look for colorspace information from metadata if the
* image didn't contain an embedded color profile
*/
if (! profile)
{
GimpMetadataColorspace colorspace;
colorspace = gimp_metadata_get_colorspace (metadata);
switch (colorspace)
{
case GIMP_METADATA_COLORSPACE_UNSPECIFIED:
case GIMP_METADATA_COLORSPACE_UNCALIBRATED:
case GIMP_METADATA_COLORSPACE_SRGB:
/* use sRGB, a NULL profile will do the right thing */
break;
case GIMP_METADATA_COLORSPACE_ADOBERGB:
profile = gimp_color_profile_new_rgb_adobe ();
break;
}
if (profile)
gimp_image_set_color_profile (image, profile);
}
if (profile)
g_object_unref (profile);
}
gimp_image_set_metadata (image, metadata);
}
/**
* gimp_image_metadata_load_thumbnail:
* @file: A #GFile image
* @error: Return location for error message
*
* Retrieves a thumbnail from metadata if present.
*
* Returns: (transfer none) (nullable): a #GimpImage of the @file thumbnail.
*
* Since: 2.10
*/
GimpImage *
gimp_image_metadata_load_thumbnail (GFile *file,
GError **error)
{
GimpMetadata *metadata;
GInputStream *input_stream;
GdkPixbuf *pixbuf;
guint8 *thumbnail_buffer;
gint thumbnail_size;
GimpImage *image = NULL;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
metadata = gimp_metadata_load_from_file (file, error);
if (! metadata)
return NULL;
if (! gexiv2_metadata_get_exif_thumbnail (GEXIV2_METADATA (metadata),
&thumbnail_buffer,
&thumbnail_size))
{
g_object_unref (metadata);
return NULL;
}
input_stream = g_memory_input_stream_new_from_data (thumbnail_buffer,
thumbnail_size,
(GDestroyNotify) g_free);
pixbuf = gdk_pixbuf_new_from_stream (input_stream, NULL, error);
g_object_unref (input_stream);
if (pixbuf)
{
GimpLayer *layer;
image = gimp_image_new (gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
GIMP_RGB);
gimp_image_undo_disable (image);
layer = gimp_layer_new_from_pixbuf (image, _("Background"),
pixbuf,
100.0,
gimp_image_get_default_new_layer_mode (image),
0.0, 0.0);
g_object_unref (pixbuf);
gimp_image_insert_layer (image, layer, NULL, 0);
gimp_image_metadata_rotate (image,
gexiv2_metadata_get_orientation (GEXIV2_METADATA (metadata)));
}
g_object_unref (metadata);
return image;
}
/* private functions */
static void
gimp_image_metadata_rotate (GimpImage *image,
GExiv2Orientation orientation)
{
switch (orientation)
{
case GEXIV2_ORIENTATION_UNSPECIFIED:
case GEXIV2_ORIENTATION_NORMAL: /* standard orientation, do nothing */
break;
case GEXIV2_ORIENTATION_HFLIP:
gimp_image_flip (image, GIMP_ORIENTATION_HORIZONTAL);
break;
case GEXIV2_ORIENTATION_ROT_180:
gimp_image_rotate (image, GIMP_ROTATE_180);
break;
case GEXIV2_ORIENTATION_VFLIP:
gimp_image_flip (image, GIMP_ORIENTATION_VERTICAL);
break;
case GEXIV2_ORIENTATION_ROT_90_HFLIP: /* flipped diagonally around '\' */
gimp_image_rotate (image, GIMP_ROTATE_90);
gimp_image_flip (image, GIMP_ORIENTATION_HORIZONTAL);
break;
case GEXIV2_ORIENTATION_ROT_90: /* 90 CW */
gimp_image_rotate (image, GIMP_ROTATE_90);
break;
case GEXIV2_ORIENTATION_ROT_90_VFLIP: /* flipped diagonally around '/' */
gimp_image_rotate (image, GIMP_ROTATE_90);
gimp_image_flip (image, GIMP_ORIENTATION_VERTICAL);
break;
case GEXIV2_ORIENTATION_ROT_270: /* 90 CCW */
gimp_image_rotate (image, GIMP_ROTATE_270);
break;
default: /* shouldn't happen */
break;
}
}
static GdkPixbuf *
gimp_image_metadata_rotate_pixbuf (GdkPixbuf *pixbuf,
GExiv2Orientation orientation)
{
GdkPixbuf *rotated = NULL;
GdkPixbuf *temp;
switch (orientation)
{
case GEXIV2_ORIENTATION_UNSPECIFIED:
case GEXIV2_ORIENTATION_NORMAL: /* standard orientation, do nothing */
rotated = g_object_ref (pixbuf);
break;
case GEXIV2_ORIENTATION_HFLIP:
rotated = gdk_pixbuf_flip (pixbuf, TRUE);
break;
case GEXIV2_ORIENTATION_ROT_180:
rotated = gdk_pixbuf_rotate_simple (pixbuf, GDK_PIXBUF_ROTATE_UPSIDEDOWN);
break;
case GEXIV2_ORIENTATION_VFLIP:
rotated = gdk_pixbuf_flip (pixbuf, FALSE);
break;
case GEXIV2_ORIENTATION_ROT_90_HFLIP: /* flipped diagonally around '\' */
temp = gdk_pixbuf_rotate_simple (pixbuf, GDK_PIXBUF_ROTATE_CLOCKWISE);
rotated = gdk_pixbuf_flip (temp, TRUE);
g_object_unref (temp);
break;
case GEXIV2_ORIENTATION_ROT_90: /* 90 CW */
rotated = gdk_pixbuf_rotate_simple (pixbuf, GDK_PIXBUF_ROTATE_CLOCKWISE);
break;
case GEXIV2_ORIENTATION_ROT_90_VFLIP: /* flipped diagonally around '/' */
temp = gdk_pixbuf_rotate_simple (pixbuf, GDK_PIXBUF_ROTATE_CLOCKWISE);
rotated = gdk_pixbuf_flip (temp, FALSE);
g_object_unref (temp);
break;
case GEXIV2_ORIENTATION_ROT_270: /* 90 CCW */
rotated = gdk_pixbuf_rotate_simple (pixbuf, GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE);
break;
default: /* shouldn't happen */
break;
}
return rotated;
}
static void
gimp_image_metadata_rotate_query (GimpImage *image,
const gchar *mime_type,
GimpMetadata *metadata,
gboolean interactive)
{
GimpParasite *parasite;
gchar *parasite_name;
GExiv2Orientation orientation;
gboolean query = interactive;
orientation = gexiv2_metadata_get_orientation (GEXIV2_METADATA (metadata));
if (orientation <= GEXIV2_ORIENTATION_NORMAL ||
orientation > GEXIV2_ORIENTATION_MAX)
return;
parasite_name = g_strdup_printf ("gimp-metadata-exif-rotate(%s)", mime_type);
parasite = gimp_get_parasite (parasite_name);
if (parasite)
{
if (strncmp (gimp_parasite_data (parasite), "yes",
gimp_parasite_data_size (parasite)) == 0)
{
query = FALSE;
}
else if (strncmp (gimp_parasite_data (parasite), "no",
gimp_parasite_data_size (parasite)) == 0)
{
gimp_parasite_free (parasite);
g_free (parasite_name);
return;
}
gimp_parasite_free (parasite);
}
if (query && ! gimp_image_metadata_rotate_dialog (image,
orientation,
parasite_name))
{
g_free (parasite_name);
return;
}
g_free (parasite_name);
gimp_image_metadata_rotate (image, orientation);
gexiv2_metadata_set_orientation (GEXIV2_METADATA (metadata),
GEXIV2_ORIENTATION_NORMAL);
}
static gboolean
gimp_image_metadata_rotate_dialog (GimpImage *image,
GExiv2Orientation orientation,
const gchar *parasite_name)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *toggle;
GdkPixbuf *pixbuf;
gchar *name;
gchar *title;
gint response;
name = gimp_image_get_name (image);
title = g_strdup_printf (_("Rotate %s?"), name);
g_free (name);
dialog = gimp_dialog_new (title, "gimp-metadata-rotate-dialog",
NULL, 0, NULL, NULL,
_("_Keep Original"), GTK_RESPONSE_CANCEL,
_("_Rotate"), GTK_RESPONSE_OK,
NULL);
g_free (title);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
gimp_window_set_transient (GTK_WINDOW (dialog));
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_vbox, FALSE, FALSE, 0);
gtk_widget_show (main_vbox);
#define THUMBNAIL_SIZE 128
pixbuf = gimp_image_get_thumbnail (image,
THUMBNAIL_SIZE, THUMBNAIL_SIZE,
GIMP_PIXBUF_SMALL_CHECKS);
if (pixbuf)
{
GdkPixbuf *rotated;
GtkWidget *hbox;
GtkWidget *image;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
label = gtk_label_new (_("Original"));
gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_MIDDLE);
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_box_pack_end (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
image = gtk_image_new_from_pixbuf (pixbuf);
gtk_box_pack_end (GTK_BOX (vbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
label = gtk_label_new (_("Rotated"));
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
-1);
gtk_box_pack_end (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
rotated = gimp_image_metadata_rotate_pixbuf (pixbuf, orientation);
g_object_unref (pixbuf);
image = gtk_image_new_from_pixbuf (rotated);
g_object_unref (rotated);
gtk_box_pack_end (GTK_BOX (vbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
}
label = g_object_new (GTK_TYPE_LABEL,
"label", _("This image contains Exif orientation "
"metadata."),
"wrap", TRUE,
"justify", GTK_JUSTIFY_LEFT,
"xalign", 0.0,
"yalign", 0.5,
NULL);
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_SCALE, PANGO_SCALE_LARGE,
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
-1);
/* eek */
gtk_widget_set_size_request (GTK_WIDGET (label),
2 * THUMBNAIL_SIZE + 12, -1);
gtk_box_pack_start (GTK_BOX (main_vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
label = g_object_new (GTK_TYPE_LABEL,
"label", _("Would you like to rotate the image?"),
"wrap", TRUE,
"justify", GTK_JUSTIFY_LEFT,
"xalign", 0.0,
"yalign", 0.5,
NULL);
/* eek */
gtk_widget_set_size_request (GTK_WIDGET (label),
2 * THUMBNAIL_SIZE + 12, -1);
gtk_box_pack_start (GTK_BOX (main_vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
toggle = gtk_check_button_new_with_mnemonic (_("_Don't ask me again"));
gtk_box_pack_end (GTK_BOX (main_vbox), toggle, FALSE, FALSE, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), FALSE);
gtk_widget_show (toggle);
response = gimp_dialog_run (GIMP_DIALOG (dialog));
if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (toggle)))
{
GimpParasite *parasite;
const gchar *str = (response == GTK_RESPONSE_OK) ? "yes" : "no";
parasite = gimp_parasite_new (parasite_name,
GIMP_PARASITE_PERSISTENT,
strlen (str), str);
gimp_attach_parasite (parasite);
gimp_parasite_free (parasite);
}
gtk_widget_destroy (dialog);
return (response == GTK_RESPONSE_OK);
}
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