From 2c373fbd1ecfc9697d351c67b8a2c4b170088e40 Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Mon, 9 Apr 2018 13:38:42 +0200
Subject: [PATCH] Set defaults for parameters in launcher.

The launcher assumes it is running in a subfolder of the project root,
and then checks some default paths for the parameters of the launcher.

Currently, it loads up the ilsvrc12 configuration in conjunction with
Alexnet. Maube this can change in the future to sommething more
interesting?
---
 src/tools/launcher.cpp | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/tools/launcher.cpp b/src/tools/launcher.cpp
index b3d3d97..d089581 100644
--- a/src/tools/launcher.cpp
+++ b/src/tools/launcher.cpp
@@ -5,6 +5,11 @@
 
 using namespace std::string_literals;
 
+bool file_exists(const char* path, unsigned int mode = F_OK)
+{
+    return access(path, mode) == 0;
+}
+
 bool executable_exists(std::string_view dir, std::string_view executable)
 {
     if (dir.size() + executable.size() + 1 >= PATH_MAX) {
@@ -17,7 +22,7 @@ bool executable_exists(std::string_view dir, std::string_view executable)
     ptr = std::copy(executable.begin(), executable.end(), ptr + 1);
     *ptr = '\0';
 
-    return access(path_buf, F_OK | X_OK) == 0;
+    return file_exists(path_buf, F_OK | X_OK);
 }
 
 auto file_filter_for_extension(std::string_view extension)
@@ -70,6 +75,13 @@ void float_parameter(std::vector<char *> &argv, std::string_view flag, double va
     argv.push_back(wrap_string(buffer));
 }
 
+void set_default_path(Gtk::FileChooserButton& chooser, const char* path)
+{
+    if (file_exists(path)) {
+        chooser.set_filename(path);
+    }
+}
+
 class Launcher : public Gtk::Window {
 public:
     Launcher();
@@ -119,13 +131,20 @@ Launcher::Launcher()
 
     // Configure all widgets
     fmriChooser.set_hexpand(true);
-    findExecutable();
     modelChooser.add_filter(file_filter_for_extension("prototxt"));
     weightsChooser.add_filter(file_filter_for_extension("caffemodel"));
     labelChooser.add_filter(file_filter_for_extension("txt"));
     meansChooser.add_filter(file_filter_for_extension("binaryproto"));
     pathColor.set_use_alpha(true);
 
+    // Set the default paths if called from the expected place
+    findExecutable();
+    set_default_path(modelChooser, "../data/models/alexnet/model-dedup.prototxt");
+    set_default_path(weightsChooser, "../data/models/alexnet/bvlc_alexnet.caffemodel");
+    set_default_path(labelChooser, "../data/ilsvrc12/synset_words.txt");
+    set_default_path(meansChooser, "../data/ilsvrc12/imagenet_mean.binaryproto");
+    set_default_path(inputChooser, "../data/samples");
+
     // Configure grid display options
     grid.set_row_spacing(2);
     grid.set_column_spacing(2);
@@ -176,8 +195,8 @@ void Launcher::start()
             color_string(pathColor),
     };
 
-    float_parameter(argv, "--layer-opacity", layerTransparancy.get_adjustment()->get_value());
-    float_parameter(argv, "--interaction-opacity", interactionTransparancy.get_adjustment()->get_value());
+    float_parameter(argv, "--layer-opacity", layerTransparancy.get_value());
+    float_parameter(argv, "--interaction-opacity", interactionTransparancy.get_value());
 
     if (labelChooser.get_file()) {
         argv.push_back(wrap_string("-l"));