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added support for easier editing of some common metadata tags

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(cherry picked from commit 0e3f760b520a5cbaa4e63d0f8a5ca5574093f411)
This commit is contained in:
Alberto Griggio 2020-10-01 08:46:38 +02:00 committed by Lawrence Lee
parent 322e709bcb
commit fca1b5c5f5
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GPG Key ID: 048FF2B76A63895F
1 changed files with 77 additions and 0 deletions
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77
rtgui/exifpanel.cc
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@ -28,6 +28,8 @@
#include "../rtengine/metadata.h"
#include "../rtengine/procparams.h"
#include <glibmm/regex.h>
using namespace rtengine;
using namespace rtengine::procparams;
@ -637,6 +639,74 @@ void ExifPanel::setExifTagValue(Gtk::CellRenderer *renderer, const Gtk::TreeMode
}
namespace {
Glib::ustring to_fraction(const Glib::ustring &s)
{
auto i = s.find(".");
if (i != Glib::ustring::npos) {
return s.substr(0, i) + s.substr(i+1) + "/1" + Glib::ustring(s.size() - i - 1, '0');
}
return s;
}
typedef Glib::ustring (*validator_func)(const Glib::ustring &);
Glib::ustring get_fnumber(const Glib::ustring &val)
{
Glib::MatchInfo m;
auto re = Glib::Regex::create("f? *([0-9.]+) *", Glib::REGEX_CASELESS);
if (re->match(val, m)) {
auto s = m.fetch(1);
return to_fraction(s);
}
return val;
}
Glib::ustring get_shutterspeed(const Glib::ustring &val)
{
Glib::MatchInfo m;
auto re = Glib::Regex::create(" *([0-9/]+) *s? *", Glib::REGEX_CASELESS);
if (re->match(val, m)) {
auto s = m.fetch(1);
return s;
}
return val;
}
Glib::ustring get_focallen(const Glib::ustring &val)
{
Glib::MatchInfo m;
auto re = Glib::Regex::create(" *([0-9.]+) *(mm)? *", Glib::REGEX_CASELESS);
if (re->match(val, m)) {
auto s = m.fetch(1);
return to_fraction(s);
}
return val;
}
Glib::ustring get_expcomp(const Glib::ustring &val)
{
Glib::MatchInfo m;
auto re = Glib::Regex::create(" *(-?[0-9.]+) *(EV)? *", Glib::REGEX_CASELESS);
if (re->match(val, m)) {
auto s = m.fetch(1);
return to_fraction(s);
}
return val;
}
std::unordered_map<std::string, validator_func> validators = {
{"Exif.Photo.FNumber", get_fnumber},
{"Exif.Photo.ExposureTime", get_shutterspeed},
{"Exif.Photo.FocalLength", get_focallen},
{"Exif.Photo.ExposureBiasValue", get_expcomp}
};
} // namespace
void ExifPanel::onEditExifTagValue(const Glib::ustring &path, const Glib::ustring &val)
{
auto it = exifTreeModel->get_iter(path);
@ -648,6 +718,13 @@ void ExifPanel::onEditExifTagValue(const Glib::ustring &path, const Glib::ustrin
try {
Exiv2::ExifData data;
auto &datum = data[key];
auto it = validators.find(key);
if (it != validators.end()) {
auto v = it->second(value);
if (datum.setValue(v) == 0) {
value = v;
}
}
if (datum.setValue(value) != 0) {
if ((datum.typeId() == Exiv2::signedRational || datum.typeId() == Exiv2::unsignedRational) && datum.setValue(value + "/1") == 0) {
value += "/1";