Add common directories to file dialog

libs/ui/source/file_dialog.cpp

@@ -12,6 +12,8 @@
 #include <psemek/io/memory_stream.hpp>
 #include <psemek/io/file_stream.hpp>
 #include <psemek/util/unicode.hpp>
+#include <psemek/util/common_directories.hpp>
+#include <psemek/util/to_shared.hpp>
 
 #include <psemek/ui/resources/folder_png.hpp>
 #include <psemek/ui/resources/file_png.hpp>
@@ -145,6 +147,17 @@ namespace psemek::ui
 
 		auto common_paths_label = options.element_factory.make_label("");
 
+		auto common_paths = util::to_shared(util::common_directories());
+		{
+			std::string str;
+			int index = 0;
+			for (auto const & dir : *common_paths)
+			{
+				str += util::to_string("[link:", index++, "]", escape(dir.first), "[/link]\n");
+			}
+			common_paths_label->set_tagged_text(str);
+		}
+
 		auto current_path_label = options.element_factory.make_label("");
 		current_path_label->set_valign(label::valignment::center);
 
@@ -321,6 +334,10 @@ namespace psemek::ui
 			}
 		};
 
+		common_paths_label->on_link_click([common_paths, set_path_callback](std::string const & link){
+			int index = util::from_string<int>(link);
+			(*set_path_callback)((*common_paths)[index].second);
+		});
 
 		path_edit->on_text_changed([=](std::u32string_view const & text_u32){
 			std::string text = util::to_utf8(std::u32string(text_u32));

libs/util/include/psemek/util/common_directories.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <filesystem>
+#include <vector>
+
+namespace psemek::util
+{
+
+	std::vector<std::pair<std::string, std::filesystem::path>> common_directories();
+
+}

libs/util/source/common_directories.cpp

@@ -0,0 +1,51 @@
+#include <psemek/util/common_directories.hpp>
+
+#include <cstdlib>
+
+#ifdef _WIN32
+#include <fileapi.h>
+#endif
+
+namespace psemek::util
+{
+
+	std::vector<std::pair<std::string, std::filesystem::path>> common_directories()
+	{
+		std::vector<std::pair<std::string, std::filesystem::path>> result;
+
+#ifdef __linux__
+		{
+			std::filesystem::path path = std::getenv("HOME");
+			if (!path.empty())
+				result.push_back({"Home", path});
+		}
+
+		result.push_back({"Root", "/"});
+#endif
+
+#ifdef _WIN32
+		{
+			std::filesystem::path path = std::getenv("USERPROFILE");
+			if (!path.empty())
+				result.push_back({"Home", path});
+		}
+
+		{
+			auto drives = GetLogicalDrives();
+			for (int i = 0; i < 26; ++i)
+			{
+				if ((drives & (1 << i)) == 0) continue;
+
+				char name[3] = "A:";
+				char path[4] = "A:\\";
+				name[0] = 'A' + i;
+				path[0] = name[0];
+				result.push_back({name, path});
+			}
+		}
+#endif
+
+		return result;
+	}
+
+}