mirror of
https://github.com/scummvm/scummvm.git
synced 2025-04-02 10:52:32 -04:00
478 lines
17 KiB
C++
478 lines
17 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/scummsys.h"
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#if defined(SDL_BACKEND)
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#include "backends/events/sdl/sdl-events.h"
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#include "backends/platform/sdl/sdl.h"
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#include "backends/graphics/graphics.h"
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#include "common/config-manager.h"
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#include "common/textconsole.h"
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#include "common/fs.h"
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#include "engines/engine.h"
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#include "gui/gui-manager.h"
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SdlEventSource::SdlEventSource()
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: EventSource(), _scrollLock(false), _joystick(nullptr), _lastScreenID(0), _graphicsManager(nullptr), _queuedFakeMouseMove(false),
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_lastHatPosition(SDL_HAT_CENTERED), _mouseX(0), _mouseY(0), _engineRunning(false)
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{
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int joystick_num = ConfMan.getInt("joystick_num");
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if (joystick_num >= 0) {
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// Initialize SDL joystick subsystem
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if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) == -1) {
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warning("Could not initialize SDL joystick: %s", SDL_GetError());
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return;
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}
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openJoystick(joystick_num);
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}
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}
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int SdlEventSource::mapKey(SDL_Keycode sdlKey, SDL_Keymod mod, Uint16 unicode) {
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Common::KeyCode key = SDLToOSystemKeycode(sdlKey);
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// Keep unicode in case it's regular ASCII text, Hebrew or in case we didn't get a valid keycode
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//
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// We need to use unicode in those cases, simply because SDL1.x passes us non-layout-adjusted keycodes.
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// So unicode is the only way to get layout-adjusted keys.
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if (unicode < 0x20) {
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// don't use unicode, in case it's control characters
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unicode = 0;
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} else {
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// Use unicode, in case keycode is invalid.
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// Umlauts and others will set KEYCODE_INVALID on SDL2, so in such a case always keep unicode.
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if (key != Common::KEYCODE_INVALID) {
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// keycode is valid, check further also depending on modifiers
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if (mod & (KMOD_CTRL | KMOD_ALT)) {
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// Ctrl and/or Alt is active
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//
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// We need to restrict unicode to only up to 0x7E, because on macOS the option/alt key will switch to
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// an alternate keyboard, which will cause us to receive Unicode characters for some keys, which are outside
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// of the ASCII range (e.g. alt-x will get us U+2248). We need to return 'x' for alt-x, so using unicode
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// in that case would break alt-shortcuts.
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if (unicode > 0x7E)
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unicode = 0; // do not allow any characters above 0x7E
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} else {
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// We allow Hebrew characters
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if (unicode >= 0x05D0 && unicode <= 0x05EA)
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return unicode;
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// Cyrillic
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if (unicode >= 0x0400 && unicode <= 0x045F)
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return unicode;
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// We must not restrict as much as when Ctrl/Alt-modifiers are active, otherwise
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// we wouldn't let umlauts through for SDL1. For SDL1 umlauts may set for example KEYCODE_QUOTE, KEYCODE_MINUS, etc.
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if (unicode > 0xFF)
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unicode = 0; // do not allow any characters above 0xFF
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}
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}
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}
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// Attention:
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// When using SDL1.x, we will get scancodes via sdlKey, that are raw scancodes, so NOT adjusted to keyboard layout/
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// mapping. So for example for certain locales, we will get KEYCODE_y, when 'z' is pressed and so on.
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// When using SDL2.x however, we will get scancodes based on the keyboard layout.
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if (key >= Common::KEYCODE_F1 && key <= Common::KEYCODE_F9) {
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return key - Common::KEYCODE_F1 + Common::ASCII_F1;
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} else if (key >= Common::KEYCODE_KP0 && key <= Common::KEYCODE_KP9) {
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if ((mod & KMOD_NUM) == 0)
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return 0; // In case Num-Lock is NOT enabled, return 0 for ascii, so that directional keys on numpad work
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return key - Common::KEYCODE_KP0 + '0';
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} else if (key >= Common::KEYCODE_UP && key <= Common::KEYCODE_PAGEDOWN) {
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return key;
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} else if (unicode) {
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// Return unicode in case it's still set and wasn't filtered.
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return unicode;
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} else if (key >= 'a' && key <= 'z' && (mod & KMOD_SHIFT)) {
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return key & ~0x20;
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} else if (key >= Common::KEYCODE_NUMLOCK && key < Common::KEYCODE_LAST) {
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return 0;
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} else {
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return key;
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}
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}
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void SdlEventSource::SDLModToOSystemKeyFlags(SDL_Keymod mod, Common::Event &event) {
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event.kbd.flags = 0;
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if (mod & KMOD_SHIFT)
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event.kbd.flags |= Common::KBD_SHIFT;
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if (mod & KMOD_ALT)
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event.kbd.flags |= Common::KBD_ALT;
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if (mod & KMOD_CTRL)
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event.kbd.flags |= Common::KBD_CTRL;
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if (mod & KMOD_META)
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event.kbd.flags |= Common::KBD_META;
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// Sticky flags
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if (mod & KMOD_NUM)
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event.kbd.flags |= Common::KBD_NUM;
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if (mod & KMOD_CAPS)
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event.kbd.flags |= Common::KBD_CAPS;
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}
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Common::KeyCode SdlEventSource::SDLToOSystemKeycode(const SDL_Keycode key) {
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switch (key) {
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case SDLK_BACKSPACE: return Common::KEYCODE_BACKSPACE;
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case SDLK_TAB: return Common::KEYCODE_TAB;
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case SDLK_CLEAR: return Common::KEYCODE_CLEAR;
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case SDLK_RETURN: return Common::KEYCODE_RETURN;
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case SDLK_PAUSE: return Common::KEYCODE_PAUSE;
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case SDLK_ESCAPE: return Common::KEYCODE_ESCAPE;
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case SDLK_SPACE: return Common::KEYCODE_SPACE;
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case SDLK_EXCLAIM: return Common::KEYCODE_EXCLAIM;
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case SDLK_QUOTEDBL: return Common::KEYCODE_QUOTEDBL;
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case SDLK_HASH: return Common::KEYCODE_HASH;
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case SDLK_DOLLAR: return Common::KEYCODE_DOLLAR;
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case SDLK_AMPERSAND: return Common::KEYCODE_AMPERSAND;
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case SDLK_QUOTE: return Common::KEYCODE_QUOTE;
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case SDLK_LEFTPAREN: return Common::KEYCODE_LEFTPAREN;
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case SDLK_RIGHTPAREN: return Common::KEYCODE_RIGHTPAREN;
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case SDLK_ASTERISK: return Common::KEYCODE_ASTERISK;
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case SDLK_PLUS: return Common::KEYCODE_PLUS;
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case SDLK_COMMA: return Common::KEYCODE_COMMA;
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case SDLK_MINUS: return Common::KEYCODE_MINUS;
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case SDLK_PERIOD: return Common::KEYCODE_PERIOD;
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case SDLK_SLASH: return Common::KEYCODE_SLASH;
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case SDLK_0: return Common::KEYCODE_0;
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case SDLK_1: return Common::KEYCODE_1;
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case SDLK_2: return Common::KEYCODE_2;
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case SDLK_3: return Common::KEYCODE_3;
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case SDLK_4: return Common::KEYCODE_4;
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case SDLK_5: return Common::KEYCODE_5;
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case SDLK_6: return Common::KEYCODE_6;
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case SDLK_7: return Common::KEYCODE_7;
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case SDLK_8: return Common::KEYCODE_8;
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case SDLK_9: return Common::KEYCODE_9;
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case SDLK_COLON: return Common::KEYCODE_COLON;
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case SDLK_SEMICOLON: return Common::KEYCODE_SEMICOLON;
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case SDLK_LESS: return Common::KEYCODE_LESS;
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case SDLK_EQUALS: return Common::KEYCODE_EQUALS;
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case SDLK_GREATER: return Common::KEYCODE_GREATER;
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case SDLK_QUESTION: return Common::KEYCODE_QUESTION;
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case SDLK_AT: return Common::KEYCODE_AT;
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case SDLK_LEFTBRACKET: return Common::KEYCODE_LEFTBRACKET;
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case SDLK_BACKSLASH: return Common::KEYCODE_BACKSLASH;
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case SDLK_RIGHTBRACKET: return Common::KEYCODE_RIGHTBRACKET;
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case SDLK_CARET: return Common::KEYCODE_CARET;
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case SDLK_UNDERSCORE: return Common::KEYCODE_UNDERSCORE;
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case SDLK_BACKQUOTE: return Common::KEYCODE_BACKQUOTE;
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case SDLK_a: return Common::KEYCODE_a;
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case SDLK_b: return Common::KEYCODE_b;
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case SDLK_c: return Common::KEYCODE_c;
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case SDLK_d: return Common::KEYCODE_d;
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case SDLK_e: return Common::KEYCODE_e;
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case SDLK_f: return Common::KEYCODE_f;
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case SDLK_g: return Common::KEYCODE_g;
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case SDLK_h: return Common::KEYCODE_h;
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case SDLK_i: return Common::KEYCODE_i;
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case SDLK_j: return Common::KEYCODE_j;
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case SDLK_k: return Common::KEYCODE_k;
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case SDLK_l: return Common::KEYCODE_l;
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case SDLK_m: return Common::KEYCODE_m;
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case SDLK_n: return Common::KEYCODE_n;
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case SDLK_o: return Common::KEYCODE_o;
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case SDLK_p: return Common::KEYCODE_p;
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case SDLK_q: return Common::KEYCODE_q;
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case SDLK_r: return Common::KEYCODE_r;
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case SDLK_s: return Common::KEYCODE_s;
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case SDLK_t: return Common::KEYCODE_t;
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case SDLK_u: return Common::KEYCODE_u;
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case SDLK_v: return Common::KEYCODE_v;
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case SDLK_w: return Common::KEYCODE_w;
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case SDLK_x: return Common::KEYCODE_x;
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case SDLK_y: return Common::KEYCODE_y;
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case SDLK_z: return Common::KEYCODE_z;
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case SDLK_DELETE: return Common::KEYCODE_DELETE;
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case SDLK_KP_PERIOD: return Common::KEYCODE_KP_PERIOD;
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case SDLK_KP_DIVIDE: return Common::KEYCODE_KP_DIVIDE;
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case SDLK_KP_MULTIPLY: return Common::KEYCODE_KP_MULTIPLY;
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case SDLK_KP_MINUS: return Common::KEYCODE_KP_MINUS;
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case SDLK_KP_PLUS: return Common::KEYCODE_KP_PLUS;
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case SDLK_KP_ENTER: return Common::KEYCODE_KP_ENTER;
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case SDLK_KP_EQUALS: return Common::KEYCODE_KP_EQUALS;
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case SDLK_UP: return Common::KEYCODE_UP;
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case SDLK_DOWN: return Common::KEYCODE_DOWN;
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case SDLK_RIGHT: return Common::KEYCODE_RIGHT;
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case SDLK_LEFT: return Common::KEYCODE_LEFT;
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case SDLK_INSERT: return Common::KEYCODE_INSERT;
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case SDLK_HOME: return Common::KEYCODE_HOME;
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case SDLK_END: return Common::KEYCODE_END;
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case SDLK_PAGEUP: return Common::KEYCODE_PAGEUP;
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case SDLK_PAGEDOWN: return Common::KEYCODE_PAGEDOWN;
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case SDLK_F1: return Common::KEYCODE_F1;
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case SDLK_F2: return Common::KEYCODE_F2;
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case SDLK_F3: return Common::KEYCODE_F3;
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case SDLK_F4: return Common::KEYCODE_F4;
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case SDLK_F5: return Common::KEYCODE_F5;
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case SDLK_F6: return Common::KEYCODE_F6;
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case SDLK_F7: return Common::KEYCODE_F7;
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case SDLK_F8: return Common::KEYCODE_F8;
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case SDLK_F9: return Common::KEYCODE_F9;
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case SDLK_F10: return Common::KEYCODE_F10;
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case SDLK_F11: return Common::KEYCODE_F11;
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case SDLK_F12: return Common::KEYCODE_F12;
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case SDLK_F13: return Common::KEYCODE_F13;
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case SDLK_F14: return Common::KEYCODE_F14;
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case SDLK_F15: return Common::KEYCODE_F15;
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case SDLK_CAPSLOCK: return Common::KEYCODE_CAPSLOCK;
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case SDLK_RSHIFT: return Common::KEYCODE_RSHIFT;
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case SDLK_LSHIFT: return Common::KEYCODE_LSHIFT;
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case SDLK_RCTRL: return Common::KEYCODE_RCTRL;
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case SDLK_LCTRL: return Common::KEYCODE_LCTRL;
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case SDLK_RALT: return Common::KEYCODE_RALT;
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case SDLK_LALT: return Common::KEYCODE_LALT;
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case SDLK_MODE: return Common::KEYCODE_MODE;
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case SDLK_HELP: return Common::KEYCODE_HELP;
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case SDLK_SYSREQ: return Common::KEYCODE_SYSREQ;
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case SDLK_MENU: return Common::KEYCODE_MENU;
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case SDLK_POWER: return Common::KEYCODE_POWER;
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#if SDL_VERSION_ATLEAST(1, 2, 3)
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case SDLK_UNDO: return Common::KEYCODE_UNDO;
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#endif
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case SDLK_SCROLLOCK: return Common::KEYCODE_SCROLLOCK;
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case SDLK_NUMLOCK: return Common::KEYCODE_NUMLOCK;
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case SDLK_LSUPER: return Common::KEYCODE_LSUPER;
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case SDLK_RSUPER: return Common::KEYCODE_RSUPER;
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case SDLK_PRINT: return Common::KEYCODE_PRINT;
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case SDLK_COMPOSE: return Common::KEYCODE_COMPOSE;
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case SDLK_KP0: return Common::KEYCODE_KP0;
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case SDLK_KP1: return Common::KEYCODE_KP1;
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case SDLK_KP2: return Common::KEYCODE_KP2;
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case SDLK_KP3: return Common::KEYCODE_KP3;
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case SDLK_KP4: return Common::KEYCODE_KP4;
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case SDLK_KP5: return Common::KEYCODE_KP5;
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case SDLK_KP6: return Common::KEYCODE_KP6;
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case SDLK_KP7: return Common::KEYCODE_KP7;
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case SDLK_KP8: return Common::KEYCODE_KP8;
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case SDLK_KP9: return Common::KEYCODE_KP9;
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case SDLK_WORLD_16: return Common::KEYCODE_TILDE;
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case SDLK_BREAK: return Common::KEYCODE_BREAK;
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case SDLK_LMETA: return Common::KEYCODE_LMETA;
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case SDLK_RMETA: return Common::KEYCODE_RMETA;
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case SDLK_EURO: return Common::KEYCODE_EURO;
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default: return Common::KEYCODE_INVALID;
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}
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}
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bool SdlEventSource::pollEvent(Common::Event &event) {
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// If the screen changed, send an Common::EVENT_SCREEN_CHANGED
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int screenID = g_system->getScreenChangeID();
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if (screenID != _lastScreenID) {
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_lastScreenID = screenID;
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event.type = Common::EVENT_SCREEN_CHANGED;
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return true;
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}
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if (_queuedFakeMouseMove) {
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event = _fakeMouseMove;
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_queuedFakeMouseMove = false;
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return true;
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}
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SDL_Event ev;
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while (SDL_PollEvent(&ev)) {
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preprocessEvents(&ev);
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if (dispatchSDLEvent(ev, event))
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return true;
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}
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return false;
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}
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bool SdlEventSource::dispatchSDLEvent(SDL_Event &ev, Common::Event &event) {
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switch (ev.type) {
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case SDL_KEYDOWN:
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return handleKeyDown(ev, event);
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case SDL_KEYUP:
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return handleKeyUp(ev, event);
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case SDL_MOUSEMOTION:
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return handleMouseMotion(ev, event);
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case SDL_MOUSEBUTTONDOWN:
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return handleMouseButtonDown(ev, event);
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case SDL_MOUSEBUTTONUP:
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return handleMouseButtonUp(ev, event);
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case SDL_SYSWMEVENT:
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return handleSysWMEvent(ev, event);
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case SDL_VIDEOEXPOSE:
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if (_graphicsManager) {
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_graphicsManager->notifyVideoExpose();
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}
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return false;
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case SDL_VIDEORESIZE:
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return handleResizeEvent(event, ev.resize.w, ev.resize.h);
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case SDL_QUIT:
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event.type = Common::EVENT_QUIT;
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return true;
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default:
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break;
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}
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if (_joystick) {
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switch (ev.type) {
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case SDL_JOYBUTTONDOWN:
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return handleJoyButtonDown(ev, event);
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case SDL_JOYBUTTONUP:
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return handleJoyButtonUp(ev, event);
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case SDL_JOYAXISMOTION:
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return handleJoyAxisMotion(ev, event);
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case SDL_JOYHATMOTION:
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return handleJoyHatMotion(ev, event);
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default:
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break;
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}
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}
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return false;
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}
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bool SdlEventSource::handleKeyDown(SDL_Event &ev, Common::Event &event) {
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SDLModToOSystemKeyFlags(SDL_GetModState(), event);
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SDL_Keycode sdlKeycode = obtainKeycode(ev.key.keysym);
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Common::KeyCode key = SDLToOSystemKeycode(sdlKeycode);
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// Handle scroll lock as a key modifier
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if (key == Common::KEYCODE_SCROLLOCK)
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_scrollLock = !_scrollLock;
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if (_scrollLock)
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event.kbd.flags |= Common::KBD_SCRL;
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if (remapKey(ev, event))
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return true;
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event.type = Common::EVENT_KEYDOWN;
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event.kbd.keycode = key;
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SDL_Keymod mod = (SDL_Keymod)ev.key.keysym.mod;
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#if defined(__amigaos4__)
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// On AmigaOS, SDL always reports numlock as off. However, we get KEYCODE_KP# only when
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// it is on, and get different keycodes (for example KEYCODE_PAGEDOWN) when it is off.
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if (event.kbd.keycode >= Common::KEYCODE_KP0 && event.kbd.keycode <= Common::KEYCODE_KP9) {
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event.kbd.flags |= Common::KBD_NUM;
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mod = SDL_Keymod(mod | KMOD_NUM);
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}
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#endif
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event.kbd.ascii = mapKey(sdlKeycode, mod, ev.key.keysym.unicode);
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return true;
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}
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bool SdlEventSource::handleKeyUp(SDL_Event &ev, Common::Event &event) {
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if (remapKey(ev, event))
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return true;
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SDLModToOSystemKeyFlags(SDL_GetModState(), event);
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SDL_Keycode sdlKeycode = obtainKeycode(ev.key.keysym);
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// Set the scroll lock sticky flag
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if (_scrollLock)
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event.kbd.flags |= Common::KBD_SCRL;
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event.type = Common::EVENT_KEYUP;
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event.kbd.keycode = SDLToOSystemKeycode(sdlKeycode);
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SDL_Keymod mod = (SDL_Keymod)ev.key.keysym.mod;
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#if defined(__amigaos4__)
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// On AmigaOS, SDL always reports numlock as off. However, we get KEYCODE_KP# only when
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// it is on, and get different keycodes (for example KEYCODE_PAGEDOWN) when it is off.
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if (event.kbd.keycode >= Common::KEYCODE_KP0 && event.kbd.keycode <= Common::KEYCODE_KP9) {
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event.kbd.flags |= Common::KBD_NUM;
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mod = SDL_Keymod(mod | KMOD_NUM);
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}
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#endif
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event.kbd.ascii = mapKey(sdlKeycode, mod, 0);
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return true;
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}
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void SdlEventSource::openJoystick(int joystickIndex) {
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if (SDL_NumJoysticks() > joystickIndex) {
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_joystick = SDL_JoystickOpen(joystickIndex);
|
|
debug("Using joystick: %s",
|
|
SDL_JoystickName(joystickIndex)
|
|
);
|
|
} else {
|
|
debug(5, "Invalid joystick: %d", joystickIndex);
|
|
}
|
|
}
|
|
|
|
void SdlEventSource::closeJoystick() {
|
|
if (_joystick) {
|
|
SDL_JoystickClose(_joystick);
|
|
_joystick = nullptr;
|
|
}
|
|
}
|
|
|
|
bool SdlEventSource::isJoystickConnected() const {
|
|
return _joystick;
|
|
}
|
|
|
|
SDL_Keycode SdlEventSource::obtainKeycode(const SDL_Keysym keySym) {
|
|
#ifdef WIN32
|
|
// WORKAROUND: SDL 1.2 on Windows does not use the user configured keyboard layout,
|
|
// resulting in "keySym.sym" values to always be those expected for an US keyboard.
|
|
// For example, SDL returns SDLK_Q when pressing the 'A' key on an AZERTY keyboard.
|
|
// This defeats the purpose of keycodes which is to be able to refer to a key without
|
|
// knowing where it is physically located.
|
|
// We work around this issue by querying the currently active Windows keyboard layout
|
|
// using the scancode provided by SDL.
|
|
|
|
if (keySym.sym >= SDLK_0 && keySym.sym <= SDLK_9) {
|
|
// The keycode returned by SDL is kept for the number keys.
|
|
// Querying the keyboard layout for those would return the base key values
|
|
// for AZERTY keyboards, which are not numbers. For example, SDLK_1 would
|
|
// map to SDLK_AMPERSAND. This is theoretically correct but practically unhelpful,
|
|
// because it makes it impossible to handle key combinations such as "ctrl-1".
|
|
return keySym.sym;
|
|
}
|
|
|
|
int vk = MapVirtualKey(keySym.scancode, MAPVK_VSC_TO_VK);
|
|
if (vk) {
|
|
int ch = (MapVirtualKey(vk, MAPVK_VK_TO_CHAR) & 0x7FFF);
|
|
// The top bit of the result of MapVirtualKey with MAPVK_VSC_TO_VK signals
|
|
// a dead key was pressed. In that case we keep the value of the accent alone.
|
|
if (ch) {
|
|
if (ch >= 'A' && ch <= 'Z') {
|
|
// Windows returns uppercase ASCII whereas SDL expects lowercase
|
|
return (SDL_Keycode)(SDLK_a + (ch - 'A'));
|
|
} else {
|
|
return (SDL_Keycode)ch;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return keySym.sym;
|
|
}
|
|
|
|
#endif
|