mirror of https://github.com/GNOME/gimp.git
app, libgimpbase: add creation date/time metadata...
when creating a new image. We add a new function `gimp_metadata_set_creation_date` to `libgimpbase/gimpmetadata` to handle setting all relevant metadata tags. We add a local function `gimp_image_new_add_creation_metadata` to add the creation date metadata to relevant functions that create new images. We write tags for both the creation date and several modified dates for IPTC, XMP and Exif metadata. All these use different ways to express date/time and timezones and I can already see we need to have another look at other places where we handle modified dates. This solves the second part of #7287, adding metadata about the date/time a new image was created.
This commit is contained in:
Jacob Boerema
parent
4ff4ce2870
commit
6b10cce682
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@ -43,6 +43,7 @@
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#include "gimpimage.h"
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#include "gimpimage-color-profile.h"
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#include "gimpimage-colormap.h"
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#include "gimpimage-metadata.h"
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#include "gimpimage-new.h"
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#include "gimpimage-undo.h"
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#include "gimplayer.h"
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@ -101,6 +102,26 @@ gimp_image_new_set_last_template (Gimp *gimp,
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G_OBJECT (gimp->image_new_last_template), 0);
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}
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void
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gimp_image_new_add_creation_metadata (GimpImage *image)
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{
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GimpMetadata *metadata;
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metadata = gimp_image_get_metadata (image);
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if (! metadata)
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{
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g_critical ("Metadata not found. Should not happen!");
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}
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else
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{
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GDateTime *datetime;
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datetime = g_date_time_new_now_local ();
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gimp_metadata_set_creation_date (metadata, datetime);
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g_date_time_unref (datetime);
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}
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}
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GimpImage *
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gimp_image_new_from_template (Gimp *gimp,
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GimpTemplate *template,
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@ -182,6 +203,8 @@ gimp_image_new_from_template (Gimp *gimp,
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gimp_image_add_layer (image, layer, NULL, 0, FALSE);
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gimp_image_new_add_creation_metadata (image);
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gimp_image_undo_enable (image);
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gimp_image_clean_all (image);
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@ -285,6 +308,8 @@ gimp_image_new_from_drawable (Gimp *gimp,
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gimp_image_add_layer (new_image, new_layer, NULL, 0, TRUE);
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gimp_image_new_add_creation_metadata (new_image);
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gimp_image_undo_enable (new_image);
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return new_image;
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@ -535,6 +560,8 @@ gimp_image_new_from_drawables (Gimp *gimp,
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gimp_image_new_copy_drawables (image, drawables, new_image, tag_copies, NULL, NULL, NULL, NULL);
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gimp_image_new_add_creation_metadata (new_image);
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gimp_image_undo_enable (new_image);
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return new_image;
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@ -581,6 +608,8 @@ gimp_image_new_from_component (Gimp *gimp,
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gimp_image_add_layer (new_image, layer, NULL, 0, TRUE);
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gimp_image_new_add_creation_metadata (new_image);
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gimp_image_undo_enable (new_image);
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return new_image;
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@ -630,6 +659,8 @@ gimp_image_new_from_buffer (Gimp *gimp,
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gimp_image_add_layer (image, layer, NULL, 0, TRUE);
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gimp_image_new_add_creation_metadata (image);
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gimp_image_undo_enable (image);
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return image;
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@ -691,6 +722,8 @@ gimp_image_new_from_pixbuf (Gimp *gimp,
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gimp_image_add_layer (new_image, layer, NULL, 0, TRUE);
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gimp_image_new_add_creation_metadata (new_image);
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gimp_image_undo_enable (new_image);
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return new_image;
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@ -116,6 +116,7 @@ EXPORTS
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gimp_metadata_serialize
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gimp_metadata_set_bits_per_sample
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gimp_metadata_set_colorspace
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gimp_metadata_set_creation_date
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gimp_metadata_set_from_exif
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gimp_metadata_set_from_iptc
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gimp_metadata_set_from_xmp
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@ -1681,6 +1681,98 @@ gimp_metadata_set_resolution (GimpMetadata *metadata,
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"Exif.Image.ResolutionUnit", buffer, NULL);
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}
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/**
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* gimp_metadata_set_creation_date:
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* @metadata: A #GimpMetadata instance.
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* @datetime: A #GDateTime value
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*
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* Sets `Iptc.Application2.DateCreated`, `Iptc.Application2.TimeCreated`,
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* `Exif.Image.DateTime`, `Exif.Image.DateTimeOriginal`,
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* `Exif.Photo.DateTimeOriginal`, `Exif.Photo.DateTimeDigitized`,
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* `Exif.Photo.OffsetTime`, `Exif.Photo.OffsetTimeOriginal`,
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* `Exif.Photo.OffsetTimeDigitized`, `Xmp.xmp.CreateDate`, `Xmp.xmp.ModifyDate`,
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* `Xmp.xmp.MetadataDate`, `Xmp.photoshop.DateCreated` of @metadata.
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*
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* Since: 3.0
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*/
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void
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gimp_metadata_set_creation_date (GimpMetadata *metadata,
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GDateTime *datetime)
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{
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gchar *datetime_buf = NULL;
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GExiv2Metadata *g2metadata = GEXIV2_METADATA (metadata);
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g_return_if_fail (GIMP_IS_METADATA (metadata));
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/* IPTC: set creation date and time; there is no tag for modified date/time. */
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datetime_buf = g_date_time_format (datetime, "%Y-%m-%d");
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Iptc.Application2.DateCreated",
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datetime_buf, NULL);
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g_free (datetime_buf);
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/* time and timezone */
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datetime_buf = g_date_time_format (datetime, "%T\%:z");
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Iptc.Application2.TimeCreated",
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datetime_buf, NULL);
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g_free (datetime_buf);
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/* Exif: Exif.Image.DateTime = Modified datetime
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* Exif.Image.DateTimeOriginal and Exif.Photo.DateTimeOriginal = When the
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* original image data was generated.
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* Exif.Photo.DateTimeDigitized = when the image was stored as digital data.
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*/
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datetime_buf = g_date_time_format (datetime, "%Y:%m:%d %T");
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Image.DateTime",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Image.DateTimeOriginal",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Photo.DateTimeOriginal",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Photo.DateTimeDigitized",
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datetime_buf, NULL);
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g_free (datetime_buf);
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/* Timezone is separate */
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datetime_buf = g_date_time_format (datetime, "\%:z");
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Photo.OffsetTime",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Photo.OffsetTimeOriginal",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Exif.Photo.OffsetTimeDigitized",
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datetime_buf, NULL);
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g_free (datetime_buf);
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/* XMP: Xmp.photoshop.DateCreated = date when the original image was
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* taken, this can be before Xmp.xmp.CreateDate. */
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datetime_buf = g_date_time_format (datetime, "%Y:%m:%dT%T\%:z");
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Xmp.xmp.CreateDate",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Xmp.xmp.ModifyDate",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Xmp.xmp.MetadataDate",
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datetime_buf, NULL);
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gexiv2_metadata_try_set_tag_string (g2metadata,
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"Xmp.photoshop.DateCreated",
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datetime_buf, NULL);
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g_free (datetime_buf);
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}
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/**
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* gimp_metadata_get_colorspace:
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* @metadata: A #GimpMetadata instance.
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@ -142,6 +142,8 @@ void gimp_metadata_set_resolution (GimpMetadata *metada
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gdouble xres,
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gdouble yres,
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GimpUnit *unit);
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void gimp_metadata_set_creation_date (GimpMetadata *metadata,
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GDateTime *datetime);
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GimpMetadataColorspace
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gimp_metadata_get_colorspace (GimpMetadata *metadata);
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