FullscreenUI: Use native file selector on Flatpak

src/util/imgui_fullscreen.cpp

@@ -7,6 +7,7 @@
 #include "gpu_device.h"
 #include "image.h"
 #include "imgui_animated.h"
+#include "imgui_manager.h"
 
 #include "common/assert.h"
 #include "common/easing.h"
@@ -2072,7 +2073,7 @@ void ImGuiFullscreen::PopulateFileSelectorItems()
         if (s_file_selector_filters.empty() ||
             std::none_of(s_file_selector_filters.begin(), s_file_selector_filters.end(),
                          [&fd](const std::string& filter) {
-                           return StringUtil::WildcardMatch(fd.FileName.c_str(), filter.c_str());
+                           return StringUtil::WildcardMatch(fd.FileName.c_str(), filter.c_str(), false);
                          }))
         {
           continue;
@@ -2102,6 +2103,16 @@ bool ImGuiFullscreen::IsFileSelectorOpen()
 void ImGuiFullscreen::OpenFileSelector(std::string_view title, bool select_directory, FileSelectorCallback callback,
                                        FileSelectorFilters filters, std::string initial_directory)
 {
+  if (initial_directory.empty() || !FileSystem::DirectoryExists(initial_directory.c_str()))
+    initial_directory = FileSystem::GetWorkingDirectory();
+
+  if (Host::ShouldPreferHostFileSelector())
+  {
+    Host::OpenHostFileSelectorAsync(ImGuiManager::StripIconCharacters(title), select_directory, std::move(callback),
+                                    std::move(filters), initial_directory);
+    return;
+  }
+
   if (s_file_selector_open)
     CloseFileSelector();
 
@@ -2111,8 +2122,6 @@ void ImGuiFullscreen::OpenFileSelector(std::string_view title, bool select_direc
   s_file_selector_callback = std::move(callback);
   s_file_selector_filters = std::move(filters);
 
-  if (initial_directory.empty() || !FileSystem::DirectoryExists(initial_directory.c_str()))
-    initial_directory = FileSystem::GetWorkingDirectory();
   SetFileSelectorDirectory(std::move(initial_directory));
   QueueResetFocus();
 }

src/util/imgui_fullscreen.h

@@ -314,3 +314,16 @@ void GetChoiceDialogHelpText(SmallStringBase& dest);
 void GetFileSelectorHelpText(SmallStringBase& dest);
 void GetInputDialogHelpText(SmallStringBase& dest);
 } // namespace ImGuiFullscreen
+
+// Host UI triggers from Big Picture mode.
+namespace Host {
+/// Returns true if native file dialogs should be preferred over Big Picture.
+bool ShouldPreferHostFileSelector();
+
+/// Opens a file selector dialog.
+using FileSelectorCallback = std::function<void(const std::string& path)>;
+using FileSelectorFilters = std::vector<std::string>;
+void OpenHostFileSelectorAsync(std::string_view title, bool select_directory, FileSelectorCallback callback,
+                               FileSelectorFilters filters = FileSelectorFilters(),
+                               std::string_view initial_directory = std::string_view());
+} // namespace Host

src/util/imgui_manager.cpp

@@ -1123,3 +1123,25 @@ void ImGuiManager::SetSoftwareCursorPosition(u32 index, float pos_x, float pos_y
   sc.pos.first = pos_x;
   sc.pos.second = pos_y;
 }
+
+std::string ImGuiManager::StripIconCharacters(std::string_view str)
+{
+  std::string result;
+  result.reserve(str.length());
+
+  for (size_t offset = 0; offset < str.length();)
+  {
+    char32_t utf;
+    offset += StringUtil::DecodeUTF8(str, offset, &utf);
+
+    // icon if outside BMP/SMP/TIP, or inside private use area
+    if (utf > 0x32FFF || (utf >= 0xE000 && utf <= 0xF8FF))
+      continue;
+
+    StringUtil::EncodeAndAppendUTF8(result, utf);
+  }
+
+  StringUtil::StripWhitespace(&result);
+
+  return result;
+}

src/util/imgui_manager.h

@@ -106,6 +106,9 @@ void SetSoftwareCursorPosition(u32 index, float pos_x, float pos_y);
 
 /// Adds software cursors to ImGui render list.
 void RenderSoftwareCursors();
+
+/// Strips icon characters from a string.
+std::string StripIconCharacters(std::string_view str);
 } // namespace ImGuiManager
 
 namespace Host {