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gimp/libgimp/gimpimagemetadata.c
Michael Natterer 4f9bde3bad Issue #1437 - 2.10 Image Metadata "keywords" corrupt 
We were not taking into account tags that can appear multiple times,
such as "keyword", they are handled by gexiv2 with the
get_tag_multiple() and set_tag_multiple() functions.

gimp_metadata_deserialize_text(): when deserializing our XML format,
check if a tag is already set on the metadata as "multiple" and if yes
retrieve it, append the new value and set it again.

gimp_image_metadata_save_finish(): take care of "multiple" values when
copying tags to new metadata created for saving.

This should preserve all values across an "import, edit, export".

Thing will still break when using the metadata editor, it doesn't
handle multiple values at all, but that code is very hard to
understand.

(cherry picked from commit d708ac0b21)
2019-01-06 17:53:41 +01:00

1027 lines
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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 (gint32 image_ID,
GExiv2Orientation orientation);
static GdkPixbuf * gimp_image_metadata_rotate_pixbuf (GdkPixbuf *pixbuf,
GExiv2Orientation orientation);
static void gimp_image_metadata_rotate_query (gint32 image_ID,
const gchar *mime_type,
GimpMetadata *metadata,
gboolean interactive);
static gboolean gimp_image_metadata_rotate_dialog (gint32 image_ID,
GExiv2Orientation orientation,
const gchar *parasite_name);
/* public functions */
/**
* gimp_image_metadata_load_prepare:
* @image_ID: 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: The file's metadata.
*
* Since: 2.10
*/
GimpMetadata *
gimp_image_metadata_load_prepare (gint32 image_ID,
const gchar *mime_type,
GFile *file,
GError **error)
{
GimpMetadata *metadata;
g_return_val_if_fail (image_ID > 0, 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_ID: 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 (gint32 image_ID,
const gchar *mime_type,
GimpMetadata *metadata,
GimpMetadataLoadFlags flags,
gboolean interactive)
{
g_return_if_fail (image_ID > 0);
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_ID, 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_ID, xres, yres);
gimp_image_set_unit (image_ID, unit);
}
}
if (flags & GIMP_METADATA_LOAD_ORIENTATION)
{
gimp_image_metadata_rotate_query (image_ID, mime_type,
metadata, interactive);
}
if (flags & GIMP_METADATA_LOAD_COLORSPACE)
{
GimpColorProfile *profile = gimp_image_get_color_profile (image_ID);
/* 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_ID, profile);
}
if (profile)
g_object_unref (profile);
}
gimp_image_set_metadata (image_ID, metadata);
}
/**
* gimp_image_metadata_save_prepare:
* @image_ID: The image
* @mime_type: The saved file's mime-type
* @suggested_flags: Suggested default values for the @flags passed to
* gimp_image_metadata_save_finish()
*
* Gets the image metadata for saving it using
* gimp_image_metadata_save_finish().
*
* The @suggested_flags are determined from what kind of metadata
* (Exif, XMP, ...) is actually present in the image and the preferences
* for metadata exporting.
* The calling application may still update @available_flags, for
* instance to follow the settings from a previous export in the same
* session, or a previous export of the same image. But it should not
* override the preferences without a good reason since it is a data
* leak.
*
* The suggested value for GIMP_METADATA_SAVE_THUMBNAIL is determined by
* whether there was a thumbnail in the previously imported image.
*
* Returns: The image's metadata, prepared for saving.
*
* Since: 2.10
*/
GimpMetadata *
gimp_image_metadata_save_prepare (gint32 image_ID,
const gchar *mime_type,
GimpMetadataSaveFlags *suggested_flags)
{
GimpMetadata *metadata;
g_return_val_if_fail (image_ID > 0, NULL);
g_return_val_if_fail (mime_type != NULL, NULL);
g_return_val_if_fail (suggested_flags != NULL, NULL);
*suggested_flags = GIMP_METADATA_SAVE_ALL;
metadata = gimp_image_get_metadata (image_ID);
if (metadata)
{
GDateTime *datetime;
const GimpParasite *comment_parasite;
const gchar *comment = NULL;
gint image_width;
gint image_height;
gdouble xres;
gdouble yres;
gchar buffer[32];
GExiv2Metadata *g2metadata = GEXIV2_METADATA (metadata);
image_width = gimp_image_width (image_ID);
image_height = gimp_image_height (image_ID);
datetime = g_date_time_new_now_local ();
comment_parasite = gimp_image_get_parasite (image_ID, "gimp-comment");
if (comment_parasite)
comment = gimp_parasite_data (comment_parasite);
/* Exif */
if (! gimp_export_exif () ||
! gexiv2_metadata_has_exif (g2metadata))
*suggested_flags &= ~GIMP_METADATA_SAVE_EXIF;
if (comment)
{
gexiv2_metadata_set_tag_string (g2metadata,
"Exif.Photo.UserComment",
comment);
gexiv2_metadata_set_tag_string (g2metadata,
"Exif.Image.ImageDescription",
comment);
}
g_snprintf (buffer, sizeof (buffer),
"%d:%02d:%02d %02d:%02d:%02d",
g_date_time_get_year (datetime),
g_date_time_get_month (datetime),
g_date_time_get_day_of_month (datetime),
g_date_time_get_hour (datetime),
g_date_time_get_minute (datetime),
g_date_time_get_second (datetime));
gexiv2_metadata_set_tag_string (g2metadata,
"Exif.Image.DateTime",
buffer);
gexiv2_metadata_set_tag_string (g2metadata,
"Exif.Image.Software",
PACKAGE_STRING);
gimp_metadata_set_pixel_size (metadata,
image_width, image_height);
gimp_image_get_resolution (image_ID, &xres, &yres);
gimp_metadata_set_resolution (metadata, xres, yres,
gimp_image_get_unit (image_ID));
/* XMP */
if (! gimp_export_xmp () ||
! gexiv2_metadata_has_xmp (g2metadata))
*suggested_flags &= ~GIMP_METADATA_SAVE_XMP;
gexiv2_metadata_set_tag_string (g2metadata,
"Xmp.dc.Format",
mime_type);
if (! g_strcmp0 (mime_type, "image/tiff"))
{
/* TIFF specific XMP data */
g_snprintf (buffer, sizeof (buffer), "%d", image_width);
gexiv2_metadata_set_tag_string (g2metadata,
"Xmp.tiff.ImageWidth",
buffer);
g_snprintf (buffer, sizeof (buffer), "%d", image_height);
gexiv2_metadata_set_tag_string (g2metadata,
"Xmp.tiff.ImageLength",
buffer);
g_snprintf (buffer, sizeof (buffer),
"%d:%02d:%02d %02d:%02d:%02d",
g_date_time_get_year (datetime),
g_date_time_get_month (datetime),
g_date_time_get_day_of_month (datetime),
g_date_time_get_hour (datetime),
g_date_time_get_minute (datetime),
g_date_time_get_second (datetime));
gexiv2_metadata_set_tag_string (g2metadata,
"Xmp.tiff.DateTime",
buffer);
}
/* IPTC */
if (! gimp_export_xmp () ||
! gexiv2_metadata_has_iptc (g2metadata))
*suggested_flags &= ~GIMP_METADATA_SAVE_IPTC;
g_snprintf (buffer, sizeof (buffer),
"%d-%d-%d",
g_date_time_get_year (datetime),
g_date_time_get_month (datetime),
g_date_time_get_day_of_month (datetime));
gexiv2_metadata_set_tag_string (g2metadata,
"Iptc.Application2.DateCreated",
buffer);
g_snprintf (buffer, sizeof (buffer),
"%02d:%02d:%02d-%02d:%02d",
g_date_time_get_hour (datetime),
g_date_time_get_minute (datetime),
g_date_time_get_second (datetime),
g_date_time_get_hour (datetime),
g_date_time_get_minute (datetime));
gexiv2_metadata_set_tag_string (g2metadata,
"Iptc.Application2.TimeCreated",
buffer);
g_date_time_unref (datetime);
}
/* Thumbnail */
if (FALSE /* FIXME if (original image had a thumbnail) */)
*suggested_flags &= ~GIMP_METADATA_SAVE_THUMBNAIL;
/* Color profile */
if (! gimp_export_color_profile ())
*suggested_flags &= ~GIMP_METADATA_SAVE_COLOR_PROFILE;
return metadata;
}
static void
gimp_image_metadata_copy_tag (GExiv2Metadata *src,
GExiv2Metadata *dest,
const gchar *tag)
{
gchar **values = gexiv2_metadata_get_tag_multiple (src, tag);
if (values)
{
gexiv2_metadata_set_tag_multiple (dest, tag, (const gchar **) values);
g_strfreev (values);
}
else
{
gchar *value = gexiv2_metadata_get_tag_string (src, tag);
if (value)
{
gexiv2_metadata_set_tag_string (dest, tag, value);
g_free (value);
}
}
}
/**
* gimp_image_metadata_save_finish:
* @image_ID: The image
* @mime_type: The saved file's mime-type
* @metadata: The metadata to set on the image
* @flags: Flags to specify what of the metadata to save
* @file: The file to load the metadata from
* @error: Return location for error message
*
* Saves the @metadata retrieved from the image with
* gimp_image_metadata_save_prepare() to @file, taking into account
* the passed @flags.
*
* Return value: Whether the save was successful.
*
* Since: 2.10
*/
gboolean
gimp_image_metadata_save_finish (gint32 image_ID,
const gchar *mime_type,
GimpMetadata *metadata,
GimpMetadataSaveFlags flags,
GFile *file,
GError **error)
{
GimpMetadata *new_metadata;
GExiv2Metadata *new_g2metadata;
gboolean support_exif;
gboolean support_xmp;
gboolean support_iptc;
gboolean success = FALSE;
gint i;
g_return_val_if_fail (image_ID > 0, FALSE);
g_return_val_if_fail (mime_type != NULL, FALSE);
g_return_val_if_fail (GEXIV2_IS_METADATA (metadata), FALSE);
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (! (flags & (GIMP_METADATA_SAVE_EXIF |
GIMP_METADATA_SAVE_XMP |
GIMP_METADATA_SAVE_IPTC |
GIMP_METADATA_SAVE_THUMBNAIL)))
return TRUE;
/* read metadata from saved file */
new_metadata = gimp_metadata_load_from_file (file, error);
new_g2metadata = GEXIV2_METADATA (new_metadata);
if (! new_metadata)
return FALSE;
support_exif = gexiv2_metadata_get_supports_exif (new_g2metadata);
support_xmp = gexiv2_metadata_get_supports_xmp (new_g2metadata);
support_iptc = gexiv2_metadata_get_supports_iptc (new_g2metadata);
if ((flags & GIMP_METADATA_SAVE_EXIF) && support_exif)
{
gchar **exif_data = gexiv2_metadata_get_exif_tags (GEXIV2_METADATA (metadata));
for (i = 0; exif_data[i] != NULL; i++)
{
if (! gexiv2_metadata_has_tag (new_g2metadata, exif_data[i]) &&
gimp_metadata_is_tag_supported (exif_data[i], mime_type))
{
gimp_image_metadata_copy_tag (GEXIV2_METADATA (metadata),
new_g2metadata,
exif_data[i]);
}
}
g_strfreev (exif_data);
}
if ((flags & GIMP_METADATA_SAVE_XMP) && support_xmp)
{
static const XmpStructs structlist[] =
{
{ "Xmp.iptcExt.LocationCreated", GEXIV2_STRUCTURE_XA_BAG },
{ "Xmp.iptcExt.LocationShown", GEXIV2_STRUCTURE_XA_BAG },
{ "Xmp.iptcExt.ArtworkOrObject", GEXIV2_STRUCTURE_XA_BAG },
{ "Xmp.iptcExt.RegistryId", GEXIV2_STRUCTURE_XA_BAG },
{ "Xmp.xmpMM.History", GEXIV2_STRUCTURE_XA_SEQ },
{ "Xmp.plus.ImageSupplier", GEXIV2_STRUCTURE_XA_SEQ },
{ "Xmp.plus.ImageCreator", GEXIV2_STRUCTURE_XA_SEQ },
{ "Xmp.plus.CopyrightOwner", GEXIV2_STRUCTURE_XA_SEQ },
{ "Xmp.plus.Licensor", GEXIV2_STRUCTURE_XA_SEQ }
};
gchar **xmp_data;
struct timeval timer_usec;
gint64 timestamp_usec;
gchar ts[128];
gettimeofday (&timer_usec, NULL);
timestamp_usec = ((gint64) timer_usec.tv_sec) * 1000000ll +
(gint64) timer_usec.tv_usec;
g_snprintf (ts, sizeof (ts), "%" G_GINT64_FORMAT, timestamp_usec);
gimp_metadata_add_xmp_history (metadata, "");
gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
"Xmp.GIMP.TimeStamp",
ts);
gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
"Xmp.xmp.CreatorTool",
N_("GIMP 2.10"));
gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
"Xmp.GIMP.Version",
GIMP_VERSION);
gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
"Xmp.GIMP.API",
GIMP_API_VERSION);
gexiv2_metadata_set_tag_string (GEXIV2_METADATA (metadata),
"Xmp.GIMP.Platform",
#if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
"Windows"
#elif defined(__linux__)
"Linux"
#elif defined(__APPLE__) && defined(__MACH__)
"Mac OS"
#elif defined(unix) || defined(__unix__) || defined(__unix)
"Unix"
#else
"Unknown"
#endif
);
xmp_data = gexiv2_metadata_get_xmp_tags (GEXIV2_METADATA (metadata));
/* Patch necessary structures */
for (i = 0; i < G_N_ELEMENTS (structlist); i++)
{
gexiv2_metadata_set_xmp_tag_struct (GEXIV2_METADATA (new_g2metadata),
structlist[i].tag,
structlist[i].type);
}
for (i = 0; xmp_data[i] != NULL; i++)
{
if (! gexiv2_metadata_has_tag (new_g2metadata, xmp_data[i]) &&
gimp_metadata_is_tag_supported (xmp_data[i], mime_type))
{
gimp_image_metadata_copy_tag (GEXIV2_METADATA (metadata),
new_g2metadata,
xmp_data[i]);
}
}
g_strfreev (xmp_data);
}
if ((flags & GIMP_METADATA_SAVE_IPTC) && support_iptc)
{
gchar **iptc_data = gexiv2_metadata_get_iptc_tags (GEXIV2_METADATA (metadata));
for (i = 0; iptc_data[i] != NULL; i++)
{
if (! gexiv2_metadata_has_tag (new_g2metadata, iptc_data[i]) &&
gimp_metadata_is_tag_supported (iptc_data[i], mime_type))
{
gimp_image_metadata_copy_tag (GEXIV2_METADATA (metadata),
new_g2metadata,
iptc_data[i]);
}
}
g_strfreev (iptc_data);
}
if (flags & GIMP_METADATA_SAVE_THUMBNAIL)
{
GdkPixbuf *thumb_pixbuf;
gchar *thumb_buffer;
gint image_width;
gint image_height;
gsize count;
gint thumbw;
gint thumbh;
#define EXIF_THUMBNAIL_SIZE 256
image_width = gimp_image_width (image_ID);
image_height = gimp_image_height (image_ID);
if (image_width > image_height)
{
thumbw = EXIF_THUMBNAIL_SIZE;
thumbh = EXIF_THUMBNAIL_SIZE * image_height / image_width;
}
else
{
thumbh = EXIF_THUMBNAIL_SIZE;
thumbw = EXIF_THUMBNAIL_SIZE * image_width / image_height;
}
thumb_pixbuf = gimp_image_get_thumbnail (image_ID, thumbw, thumbh,
GIMP_PIXBUF_KEEP_ALPHA);
if (gdk_pixbuf_save_to_buffer (thumb_pixbuf, &thumb_buffer, &count,
"jpeg", NULL,
"quality", "75",
NULL))
{
gchar buffer[32];
gexiv2_metadata_set_exif_thumbnail_from_buffer (new_g2metadata,
(guchar *) thumb_buffer,
count);
g_snprintf (buffer, sizeof (buffer), "%d", thumbw);
gexiv2_metadata_set_tag_string (new_g2metadata,
"Exif.Thumbnail.ImageWidth",
buffer);
g_snprintf (buffer, sizeof (buffer), "%d", thumbh);
gexiv2_metadata_set_tag_string (new_g2metadata,
"Exif.Thumbnail.ImageLength",
buffer);
gexiv2_metadata_set_tag_string (new_g2metadata,
"Exif.Thumbnail.BitsPerSample",
"8 8 8");
gexiv2_metadata_set_tag_string (new_g2metadata,
"Exif.Thumbnail.SamplesPerPixel",
"3");
gexiv2_metadata_set_tag_string (new_g2metadata,
"Exif.Thumbnail.PhotometricInterpretation",
"6");
g_free (thumb_buffer);
}
g_object_unref (thumb_pixbuf);
}
if (flags & GIMP_METADATA_SAVE_COLOR_PROFILE)
{
/* nothing to do, but if we ever need to modify metadata based
* on the exported color profile, this is probably the place to
* add it
*/
}
success = gimp_metadata_save_to_file (new_metadata, file, error);
g_object_unref (new_metadata);
return success;
}
gint32
gimp_image_metadata_load_thumbnail (GFile *file,
GError **error)
{
GimpMetadata *metadata;
GInputStream *input_stream;
GdkPixbuf *pixbuf;
guint8 *thumbnail_buffer;
gint thumbnail_size;
gint32 image_ID = -1;
g_return_val_if_fail (G_IS_FILE (file), -1);
g_return_val_if_fail (error == NULL || *error == NULL, -1);
metadata = gimp_metadata_load_from_file (file, error);
if (! metadata)
return -1;
if (! gexiv2_metadata_get_exif_thumbnail (GEXIV2_METADATA (metadata),
&thumbnail_buffer,
&thumbnail_size))
{
g_object_unref (metadata);
return -1;
}
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)
{
gint32 layer_ID;
image_ID = gimp_image_new (gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
GIMP_RGB);
gimp_image_undo_disable (image_ID);
layer_ID = gimp_layer_new_from_pixbuf (image_ID, _("Background"),
pixbuf,
100.0,
gimp_image_get_default_new_layer_mode (image_ID),
0.0, 0.0);
g_object_unref (pixbuf);
gimp_image_insert_layer (image_ID, layer_ID, -1, 0);
gimp_image_metadata_rotate (image_ID,
gexiv2_metadata_get_orientation (GEXIV2_METADATA (metadata)));
}
g_object_unref (metadata);
return image_ID;
}
/* private functions */
static void
gimp_image_metadata_rotate (gint32 image_ID,
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_ID, GIMP_ORIENTATION_HORIZONTAL);
break;
case GEXIV2_ORIENTATION_ROT_180:
gimp_image_rotate (image_ID, GIMP_ROTATE_180);
break;
case GEXIV2_ORIENTATION_VFLIP:
gimp_image_flip (image_ID, GIMP_ORIENTATION_VERTICAL);
break;
case GEXIV2_ORIENTATION_ROT_90_HFLIP: /* flipped diagonally around '\' */
gimp_image_rotate (image_ID, GIMP_ROTATE_90);
gimp_image_flip (image_ID, GIMP_ORIENTATION_HORIZONTAL);
break;
case GEXIV2_ORIENTATION_ROT_90: /* 90 CW */
gimp_image_rotate (image_ID, GIMP_ROTATE_90);
break;
case GEXIV2_ORIENTATION_ROT_90_VFLIP: /* flipped diagonally around '/' */
gimp_image_rotate (image_ID, GIMP_ROTATE_90);
gimp_image_flip (image_ID, GIMP_ORIENTATION_VERTICAL);
break;
case GEXIV2_ORIENTATION_ROT_270: /* 90 CCW */
gimp_image_rotate (image_ID, 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 (gint32 image_ID,
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_ID,
orientation,
parasite_name))
{
g_free (parasite_name);
return;
}
g_free (parasite_name);
gimp_image_metadata_rotate (image_ID, orientation);
gexiv2_metadata_set_orientation (GEXIV2_METADATA (metadata),
GEXIV2_ORIENTATION_NORMAL);
}
static gboolean
gimp_image_metadata_rotate_dialog (gint32 image_ID,
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_ID);
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);
gtk_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_ID,
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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