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feat: add {first_object_name} filename placeholder (#14497)

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{input_filename_base} is meant to be the saved project's file name. Before
#13753 a bug made it fall back to the first object's name when a project was
saved; #13753 fixed it to use the project name. Some users relied on the old
behavior to get the part name into their output file name and had no
placeholder to recover it ({model_name} is the 3mf designer metadata, blank
for plain STL imports).

Add {first_object_name} as a dedicated placeholder for the first printable
object on the current plate, populated in update_object_placeholders()
independently of {input_filename_base}.

Closes #14493
This commit is contained in:
raistlin7447
2026-07-02 11:14:32 -05:00
committed by GitHub
parent d24e7f75ef
commit 036bd7bcec
2 changed files with 73 additions and 1 deletions
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6
src/libslic3r/PrintBase.cpp
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@@ -21,11 +21,12 @@ void PrintTryCancel::operator()()
size_t PrintStateBase::g_last_timestamp = 0;
// Update "scale", "input_filename", "input_filename_base" placeholders from the current m_objects.
// Update "scale", "input_filename", "input_filename_base", "first_object_name" placeholders from the current m_objects.
void PrintBase::update_object_placeholders(DynamicConfig &config, const std::string &default_ext) const
{
// get the first input file name
std::string input_file;
std::string first_object_name;
std::vector<std::string> v_scale;
int num_objects = 0;
int num_instances = 0;
@@ -38,6 +39,8 @@ void PrintBase::update_object_placeholders(DynamicConfig &config, const std::str
}
if (printable) {
++ num_objects;
if (num_objects == 1)
first_object_name = model_object->name;
// CHECK_ME -> Is the following correct ?
v_scale.push_back("x:" + boost::lexical_cast<std::string>(printable->get_scaling_factor(X) * 100) +
"% y:" + boost::lexical_cast<std::string>(printable->get_scaling_factor(Y) * 100) +
@@ -51,6 +54,7 @@ void PrintBase::update_object_placeholders(DynamicConfig &config, const std::str
config.set_key_value("num_instances", new ConfigOptionInt(num_instances));
config.set_key_value("scale", new ConfigOptionStrings(v_scale));
config.set_key_value("first_object_name", new ConfigOptionString(first_object_name));
if (! input_file.empty()) {
// get basename with and without suffix
const std::string input_filename = boost::filesystem::path(input_file).filename().string();