xenia: ui: Add GTK implemention of UI

src/xenia/ui/file_picker_gtk.cc

@@ -0,0 +1,75 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2016 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/ui/file_picker.h"
+
+#include "xenia/base/assert.h"
+#include "xenia/base/platform_linux.h"
+#include <locale>
+#include <codecvt>
+#include <string>
+
+namespace xe {
+namespace ui {
+
+class GtkFilePicker : public FilePicker {
+ public:
+  GtkFilePicker();
+  ~GtkFilePicker() override;
+
+  bool Show(void* parent_window_handle) override;
+
+ private:
+};
+
+std::unique_ptr<FilePicker> FilePicker::Create() {
+  return std::make_unique<GtkFilePicker>();
+}
+
+GtkFilePicker::GtkFilePicker() = default;
+
+GtkFilePicker::~GtkFilePicker() = default;
+
+
+bool GtkFilePicker::Show(void* parent_window_handle) {
+  // TODO(benvanik): FileSaveDialog.
+  assert_true(mode() == Mode::kOpen);
+  // TODO(benvanik): folder dialogs.
+  assert_true(type() == Type::kFile);
+  GtkWidget *dialog;
+  gint res;
+
+  dialog = gtk_file_chooser_dialog_new ("Open File",
+                                        (GtkWindow*)parent_window_handle,
+                                        GTK_FILE_CHOOSER_ACTION_OPEN,
+                                        "_Cancel",
+                                        GTK_RESPONSE_CANCEL,
+                                        "_Open",
+                                        GTK_RESPONSE_ACCEPT,
+                                        NULL);
+
+  res = gtk_dialog_run (GTK_DIALOG (dialog));
+  char *filename;
+  if (res == GTK_RESPONSE_ACCEPT) {
+    GtkFileChooser *chooser = GTK_FILE_CHOOSER (dialog);
+    filename = gtk_file_chooser_get_filename (chooser);
+    std::vector<std::wstring> selected_files;
+    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
+    std::wstring ws_filename = converter.from_bytes(filename);
+    selected_files.push_back(ws_filename);
+    set_selected_files(selected_files);
+    gtk_widget_destroy (dialog);
+    return true;
+  }
+  gtk_widget_destroy (dialog);
+  return false;;
+}
+
+}  // namespace ui
+}  // namespace xe