Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/client/SDL/SDL2/sdl_kbd.hpp

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+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * SDL Client keyboard helper
+ *
+ * Copyright 2022 Armin Novak <armin.novak@thincast.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <map>
+#include <list>
+#include <atomic>
+
+#include <winpr/wtypes.h>
+#include <freerdp/freerdp.h>
+#include <freerdp/locale/keyboard.h>
+#include <SDL.h>
+
+#include "sdl_types.hpp"
+
+class sdlInput
+{
+  public:
+	explicit sdlInput(SdlContext* sdl);
+	sdlInput(const sdlInput& other) = delete;
+	sdlInput(sdlInput&& other) = delete;
+	~sdlInput();
+
+	sdlInput& operator=(const sdlInput& other) = delete;
+	sdlInput& operator=(sdlInput&& other) = delete;
+
+	BOOL keyboard_sync_state();
+	BOOL keyboard_focus_in();
+
+	BOOL keyboard_handle_event(const SDL_KeyboardEvent* ev);
+
+	BOOL keyboard_grab(Uint32 windowID, bool enable);
+	BOOL mouse_focus(Uint32 windowID);
+	BOOL mouse_grab(Uint32 windowID, SDL_bool enable);
+
+	static BOOL keyboard_set_indicators(rdpContext* context, UINT16 led_flags);
+	static BOOL keyboard_set_ime_status(rdpContext* context, UINT16 imeId, UINT32 imeState,
+	                                    UINT32 imeConvMode);
+
+	static bool prefToEnabled();
+	static uint32_t prefToMask();
+	static uint32_t prefKeyValue(const std::string& key, uint32_t fallback = SDL_SCANCODE_UNKNOWN);
+
+  private:
+	static std::list<std::string> tokenize(const std::string& data,
+	                                       const std::string& delimiter = ",");
+	static bool extract(const std::string& token, uint32_t& key, uint32_t& value);
+
+	SdlContext* _sdl;
+	Uint32 _lastWindowID;
+
+	// hotkey handling
+	bool _hotkeysEnabled;
+	uint32_t _hotkeyModmask; // modifier keys mask
+	uint32_t _hotkeyFullscreen;
+	uint32_t _hotkeyResizable;
+	uint32_t _hotkeyGrab;
+	uint32_t _hotkeyDisconnect;
+	uint32_t _hotkeyMinimize;
+	FREERDP_REMAP_TABLE* _remapTable;
+};