diff options
Diffstat (limited to 'src/eom-exif-util.c')
| -rw-r--r-- | src/eom-exif-util.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/eom-exif-util.c b/src/eom-exif-util.c index 8ff9636..8bc4afd 100644 --- a/src/eom-exif-util.c +++ b/src/eom-exif-util.c @@ -35,6 +35,7 @@ #include <time.h> #include "eom-exif-util.h" +#include "eom-util.h" #include <string.h> #include <glib/gi18n.h> @@ -192,6 +193,96 @@ eom_exif_util_format_date (const gchar *date) return new_date; } +void +eom_exif_util_set_label_text (GtkLabel *label, + EomExifData *exif_data, + gint tag_id) +{ + gchar exif_buffer[512]; + const gchar *buf_ptr; + gchar *label_text = NULL; + + g_return_if_fail (GTK_IS_LABEL (label)); + + if (exif_data) { + buf_ptr = eom_exif_data_get_value (exif_data, tag_id, + exif_buffer, 512); + + if (tag_id == EXIF_TAG_DATE_TIME_ORIGINAL && buf_ptr) + label_text = eom_exif_util_format_date (buf_ptr); + else + label_text = eom_util_make_valid_utf8 (buf_ptr); + } + + gtk_label_set_text (label, label_text); + g_free (label_text); +} + +void +eom_exif_util_set_focal_length_label_text (GtkLabel *label, + EomExifData *exif_data) +{ + ExifEntry *entry = NULL, *entry35mm = NULL; + ExifByteOrder byte_order; + gfloat f_val = 0.0; + gchar *fl_text = NULL,*fl35_text = NULL; + + /* If no ExifData is supplied the label will be + * cleared later as fl35_text is NULL. */ + if (exif_data != NULL) { + entry = exif_data_get_entry (exif_data, EXIF_TAG_FOCAL_LENGTH); + entry35mm = exif_data_get_entry (exif_data, + EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM); + byte_order = exif_data_get_byte_order (exif_data); + } + + if (entry && G_LIKELY (entry->format == EXIF_FORMAT_RATIONAL)) { + ExifRational value; + + /* Decode value by hand as libexif is not necessarily returning + * it in the format we want it to be. + */ + value = exif_get_rational (entry->data, byte_order); + /* Guard against div by zero */ + if (G_LIKELY(value.denominator != 0)) + f_val = (gfloat)value.numerator/ + (gfloat)value.denominator; + + /* TRANSLATORS: This is the actual focal length used when + the image was taken.*/ + fl_text = g_strdup_printf (_("%.1f (lens)"), f_val); + + } + if (entry35mm && G_LIKELY (entry35mm->format == EXIF_FORMAT_SHORT)) { + ExifShort s_val; + + s_val = exif_get_short (entry35mm->data, byte_order); + + /* Print as float to get a similar look as above. */ + /* TRANSLATORS: This is the equivalent focal length assuming + a 35mm film camera. */ + fl35_text = g_strdup_printf(_("%.1f (35mm film)"),(float)s_val); + } + + if (fl_text) { + if (fl35_text) { + gchar *merged_txt; + + merged_txt = g_strconcat (fl35_text,", ", fl_text, NULL); + gtk_label_set_text (label, merged_txt); + g_free (merged_txt); + } else { + gtk_label_set_text (label, fl_text); + } + } else { + /* This will also clear the label if no ExifData was supplied */ + gtk_label_set_text (label, fl35_text); + } + + g_free (fl35_text); + g_free (fl_text); +} + /** * eom_exif_data_get_value: * @exif_data: pointer to an <structname>ExifData</structname> struct |