1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef BACKEND_EVENTS_SDL_LEGACY_H 24 #define BACKEND_EVENTS_SDL_LEGACY_H 25 26 #include "backends/events/sdl/sdl-events.h" 27 28 // multiplier used to increase resolution for keyboard/joystick mouse 29 #define MULTIPLIER 16 30 31 class LegacySdlEventSource : public SdlEventSource { 32 public: 33 LegacySdlEventSource(); 34 35 bool pollEvent(Common::Event &event) override; 36 37 void checkScreenChange(); 38 39 protected: 40 /** @name Keyboard mouse emulation 41 * Disabled by fingolfin 2004-12-18. 42 * I am keeping the rest of the code in for now, since the joystick 43 * code (or rather, "hack") uses it, too. 44 */ 45 //@{ 46 47 struct KbdMouse { 48 int32 x, y; 49 int16 x_vel, y_vel, x_max, y_max, x_down_count, y_down_count, joy_x, joy_y; 50 uint32 last_time, delay_time, x_down_time, y_down_time; 51 bool modifier; 52 }; 53 KbdMouse _km; 54 55 virtual void updateKbdMouse(); 56 virtual bool handleKbdMouse(Common::Event &event); 57 58 //@} 59 60 bool handleMouseMotion(SDL_Event &ev, Common::Event &event) override; 61 bool handleMouseButtonDown(SDL_Event &ev, Common::Event &event) override; 62 bool handleMouseButtonUp(SDL_Event &ev, Common::Event &event) override; 63 bool handleJoyAxisMotion(SDL_Event &ev, Common::Event &event) override; 64 65 #if SDL_VERSION_ATLEAST(2, 0, 0) 66 bool handleControllerButton(const SDL_Event &ev, Common::Event &event, bool buttonUp) override; 67 bool handleControllerAxisMotion(const SDL_Event &ev, Common::Event &event) override; 68 #endif 69 70 /** 71 * Update the virtual mouse according to a joystick or game controller axis position change 72 */ 73 virtual bool handleAxisToMouseMotion(int16 xAxis, int16 yAxis); 74 75 /** 76 * Compute the virtual mouse movement speed factor according to the 'kbdmouse_speed' setting. 77 * The speed factor is scaled with the display size. 78 */ 79 int16 computeJoystickMouseSpeedFactor() const; 80 81 /** 82 * Resets keyboard emulation after a video screen change 83 */ 84 void resetKeyboardEmulation(int16 x_max, int16 y_max); 85 86 }; 87 88 #endif 89