mirror of
https://bitbucket.org/CPMADevs/cnq3
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628 lines
15 KiB
C++
628 lines
15 KiB
C++
/*
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===========================================================================
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Copyright (C) 2017-2018 Gian 'myT' Schellenbaum
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This file is part of Challenge Quake 3 (CNQ3).
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Challenge Quake 3 is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Challenge Quake 3 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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You should have received a copy of the GNU General Public License
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along with Challenge Quake 3. If not, see <https://www.gnu.org/licenses/>.
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===========================================================================
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*/
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// Linux main loop, event handling, etc. using SDL 2
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#include "linux_local.h"
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_syswm.h>
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#include "sdl_local.h"
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#include <stdlib.h>
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// About in_focusDelay:
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// Suppose you have the game focused in windowed mode with the console down,
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// open the command window (alt+F2), then press return or escape.
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// On my machine, SDL will first send the X11 FocusIn event and *after that*
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// the keypress event for escape or return. For oj, it's the reverse...
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// In my scenario, clearing key states after reception of the FocusIn event
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// won't prevent the application from receiving the undesired keypresses.
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static cvar_t* in_noGrab;
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static cvar_t* in_focusDelay;
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static cvar_t* m_relative;
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static qbool sdl_inputActive = qfalse;
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static qbool sdl_forceUnmute = qfalse; // overrides s_autoMute
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static int sdl_focusTime = INT_MIN; // timestamp of last X11 FocusIn event
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static qbool sdl_focused = qtrue; // does the X11 window have the focus?
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static const cvarTableItem_t in_cvars[] = {
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{ &in_noGrab, "in_noGrab", "0", 0, CVART_BOOL, NULL, NULL, "disables input grabbing" },
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{ &in_focusDelay, "in_focusDelay", "5", CVAR_ARCHIVE, CVART_INTEGER, "0", "100", "milli-seconds keypresses are off after window focus" },
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{ &m_relative, "m_relative", "1", CVAR_ARCHIVE, CVART_BOOL, NULL, NULL, "enables SDL's relative mouse mode" }
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};
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static void Minimize_f();
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static const cmdTableItem_t in_cmds[] = {
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{ "minimize", &Minimize_f, NULL, "minimizes the window" }
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};
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static qbool sdl_Version_AtLeast( int major, int minor, int patch )
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{
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SDL_version v;
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SDL_GetVersion(&v);
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// has to be SDL 2
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if (v.major != major)
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return qfalse;
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if (v.minor < minor)
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return qfalse;
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if (v.minor > minor)
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return qtrue;
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return v.patch >= patch;
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}
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static void Minimize_f()
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{
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SDL_MinimizeWindow(glimp.window);
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}
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static int QuakeKeyFromSDLKey( SDL_Keysym key )
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{
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if (key.scancode == SDL_SCANCODE_GRAVE)
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return '`';
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const SDL_Keycode sym = key.sym;
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// these ranges map directly to ASCII chars
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if ((sym >= SDLK_a && sym <= SDLK_z) ||
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(sym >= SDLK_0 && sym <= SDLK_9))
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return (int)sym;
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// F1 to F24
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// SDL splits the values 1-12 and 13-24
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// the engine splits the values 1-15 and 16-24
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switch (sym) {
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case SDLK_F1: return K_F1;
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case SDLK_F2: return K_F2;
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case SDLK_F3: return K_F3;
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case SDLK_F4: return K_F4;
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case SDLK_F5: return K_F5;
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case SDLK_F6: return K_F6;
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case SDLK_F7: return K_F7;
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case SDLK_F8: return K_F8;
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case SDLK_F9: return K_F9;
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case SDLK_F10: return K_F10;
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case SDLK_F11: return K_F11;
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case SDLK_F12: return K_F12;
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case SDLK_F13: return K_F13;
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case SDLK_F14: return K_F14;
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case SDLK_F15: return K_F15;
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case SDLK_F16: return K_F16;
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case SDLK_F17: return K_F17;
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case SDLK_F18: return K_F18;
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case SDLK_F19: return K_F19;
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case SDLK_F20: return K_F20;
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case SDLK_F21: return K_F21;
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case SDLK_F22: return K_F22;
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case SDLK_F23: return K_F23;
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case SDLK_F24: return K_F24;
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case SDLK_UP: return K_UPARROW;
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case SDLK_DOWN: return K_DOWNARROW;
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case SDLK_LEFT: return K_LEFTARROW;
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case SDLK_RIGHT: return K_RIGHTARROW;
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case SDLK_TAB: return K_TAB;
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case SDLK_RETURN: return K_ENTER;
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case SDLK_ESCAPE: return K_ESCAPE;
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case SDLK_SPACE: return K_SPACE;
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case SDLK_BACKSPACE: return K_BACKSPACE;
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case SDLK_CAPSLOCK: return K_CAPSLOCK;
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case SDLK_LALT: return K_ALT;
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case SDLK_RALT: return K_ALT;
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case SDLK_LCTRL: return K_CTRL;
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case SDLK_RCTRL: return K_CTRL;
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case SDLK_LSHIFT: return K_SHIFT;
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case SDLK_RSHIFT: return K_SHIFT;
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case SDLK_INSERT: return K_INS;
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case SDLK_DELETE: return K_DEL;
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case SDLK_PAGEDOWN: return K_PGDN;
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case SDLK_PAGEUP: return K_PGUP;
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case SDLK_HOME: return K_HOME;
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case SDLK_END: return K_END;
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case SDLK_KP_7: return K_KP_HOME;
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case SDLK_KP_8: return K_KP_UPARROW;
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case SDLK_KP_9: return K_KP_PGUP;
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case SDLK_KP_4: return K_KP_LEFTARROW;
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case SDLK_KP_5: return K_KP_5;
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case SDLK_KP_6: return K_KP_RIGHTARROW;
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case SDLK_KP_1: return K_KP_END;
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case SDLK_KP_2: return K_KP_DOWNARROW;
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case SDLK_KP_3: return K_KP_PGDN;
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case SDLK_KP_ENTER: return K_KP_ENTER;
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case SDLK_KP_0: return K_KP_INS;
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case SDLK_KP_DECIMAL: return K_KP_DEL;
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case SDLK_KP_DIVIDE: return K_KP_SLASH;
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case SDLK_KP_MINUS: return K_KP_MINUS;
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case SDLK_KP_PLUS: return K_KP_PLUS;
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case SDLK_KP_MULTIPLY: return K_KP_STAR;
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case SDLK_BACKSLASH: return K_BACKSLASH;
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case SDLK_PERIOD: return '.';
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case SDLK_COMMA: return ',';
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case SDLK_EXCLAIM: return '!';
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case SDLK_HASH: return '#';
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case SDLK_PERCENT: return '%';
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case SDLK_DOLLAR: return '$';
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case SDLK_AMPERSAND: return '&';
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case SDLK_QUOTE: return '\'';
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case SDLK_LEFTPAREN: return '(';
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case SDLK_RIGHTPAREN: return ')';
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case SDLK_ASTERISK: return '*';
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case SDLK_PLUS: return '+';
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case SDLK_MINUS: return '-';
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case SDLK_SLASH: return '/';
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case SDLK_COLON: return ':';
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case SDLK_LESS: return '<';
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case SDLK_EQUALS: return '=';
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case SDLK_GREATER: return '>';
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case SDLK_QUESTION: return '?';
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case SDLK_AT: return '@';
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case SDLK_LEFTBRACKET: return '[';
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case SDLK_RIGHTBRACKET: return ']';
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case SDLK_UNDERSCORE: return '_';
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// missing:
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// K_KP_NUMLOCK
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// K_KP_EQUALS
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default: return -1;
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}
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}
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static void sdl_Key( const SDL_KeyboardEvent* event, qbool down )
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{
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const int key = QuakeKeyFromSDLKey(event->keysym);
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if (key >= 0)
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Lin_QueEvent(Sys_Milliseconds(), SE_KEY, key, down, 0, NULL);
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if (down && key == K_BACKSPACE)
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Lin_QueEvent(Sys_Milliseconds(), SE_CHAR, 8, 0, 0, NULL);
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// ctrl+v
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if (down && key == 'v' && (event->keysym.mod & KMOD_CTRL) != 0)
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Lin_QueEvent(Sys_Milliseconds(), SE_CHAR, 22, 0, 0, NULL);
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}
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static void sdl_Text( const SDL_TextInputEvent* event )
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{
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// text is UTF-8 encoded but we only care for
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// chars that are single-byte encoded
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const byte key = (byte)event->text[0];
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if (key >= 0 && key <= 0x7F)
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Lin_QueEvent(Sys_Milliseconds(), SE_CHAR, (int)key, 0, 0, NULL);
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}
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static void sdl_MouseMotion( const SDL_MouseMotionEvent* event )
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{
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if (!sdl_inputActive)
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return;
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// SDL sometimes sends events with both values set to 0
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if ((event->xrel | event->yrel) == 0)
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return;
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Lin_QueEvent(Sys_Milliseconds(), SE_MOUSE, event->xrel, event->yrel, 0, NULL);
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}
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static void sdl_MouseButton( const SDL_MouseButtonEvent* event, qbool down )
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{
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if (!sdl_inputActive && down)
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return;
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static const int mouseButtonCount = 5;
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static const int mouseButtons[mouseButtonCount][2] = {
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{ SDL_BUTTON_LEFT, K_MOUSE1 },
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{ SDL_BUTTON_RIGHT, K_MOUSE2 },
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{ SDL_BUTTON_MIDDLE, K_MOUSE3 },
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{ SDL_BUTTON_X1, K_MOUSE4 },
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{ SDL_BUTTON_X2, K_MOUSE5 }
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};
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int button = -1;
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for(int i = 0; i < mouseButtonCount; ++i) {
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if (event->button == mouseButtons[i][0]) {
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button = i;
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break;
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}
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}
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if (button < 0)
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return;
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Lin_QueEvent(Sys_Milliseconds(), SE_KEY, mouseButtons[button][1], down, 0, NULL);
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}
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static void sdl_MouseWheel( const SDL_MouseWheelEvent* event )
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{
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if (event->y == 0)
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return;
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#if SDL_VERSION_ATLEAST(2, 0, 4)
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int delta = event->y;
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if (sdl_Version_AtLeast(2, 0, 4) &&
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event->direction == SDL_MOUSEWHEEL_FLIPPED)
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delta = -delta;
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#else
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const int delta = event->y;
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#endif
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const int key = (delta < 0) ? K_MWHEELDOWN : K_MWHEELUP;
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Lin_QueEvent(Sys_Milliseconds(), SE_KEY, key, qtrue, 0, NULL);
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Lin_QueEvent(Sys_Milliseconds(), SE_KEY, key, qfalse, 0, NULL);
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}
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static void sdl_Window( const SDL_WindowEvent* event )
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{
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// events of interest:
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//SDL_WINDOWEVENT_SHOWN
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//SDL_WINDOWEVENT_HIDDEN
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//SDL_WINDOWEVENT_RESIZED
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//SDL_WINDOWEVENT_SIZE_CHANGED // should prevent this from happening except on creation?
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//SDL_WINDOWEVENT_MINIMIZED
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//SDL_WINDOWEVENT_MAXIMIZED
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//SDL_WINDOWEVENT_RESTORED
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//SDL_WINDOWEVENT_ENTER // mouse focus gained
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//SDL_WINDOWEVENT_LEAVE // mouse focus lost
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//SDL_WINDOWEVENT_FOCUS_GAINED // kb focus gained
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//SDL_WINDOWEVENT_FOCUS_LOST // kb focus lost
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//SDL_WINDOWEVENT_CLOSE
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//SDL_WINDOWEVENT_MOVED
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switch (event->event) {
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case SDL_WINDOWEVENT_MAXIMIZED:
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case SDL_WINDOWEVENT_RESTORED:
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case SDL_WINDOWEVENT_RESIZED:
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case SDL_WINDOWEVENT_SIZE_CHANGED:
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case SDL_WINDOWEVENT_MOVED:
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// if this turns out to be too expensive, track movement and
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// only call when movement stops
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sdl_UpdateMonitorIndexFromWindow();
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break;
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default:
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break;
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}
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switch (event->event) {
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case SDL_WINDOWEVENT_SHOWN:
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case SDL_WINDOWEVENT_MAXIMIZED:
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case SDL_WINDOWEVENT_RESTORED:
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case SDL_WINDOWEVENT_FOCUS_GAINED:
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// these mean the user reacted to the alert and
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// it can now be stopped
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sdl_forceUnmute = qfalse;
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break;
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default:
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break;
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}
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}
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static void sdl_X11( const XEvent* event )
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{
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switch (event->type) {
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case FocusIn:
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// see in_focusDelay explanation at the top
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sdl_focusTime = Sys_Milliseconds();
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sdl_focused = qtrue;
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break;
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case FocusOut:
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// set modifier keys as released to prevent
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// accidental combos such alt+enter right after
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// getting focus
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// e.g. alt gets "stuck", pressing only enter
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// does a video restart as if pressing alt+enter
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Lin_QueEvent(0, SE_KEY, K_ALT, qfalse, 0, NULL);
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Lin_QueEvent(0, SE_KEY, K_CTRL, qfalse, 0, NULL);
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Lin_QueEvent(0, SE_KEY, K_SHIFT, qfalse, 0, NULL);
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sdl_focused = qfalse;
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break;
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default:
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break;
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}
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}
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static void sdl_Event( const SDL_Event* event )
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{
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switch (event->type) {
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case SDL_QUIT:
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Com_Quit(0);
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break;
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case SDL_KEYDOWN:
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if (sdl_focused && Sys_Milliseconds() - sdl_focusTime >= in_focusDelay->integer)
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sdl_Key(&event->key, qtrue);
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break;
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case SDL_KEYUP:
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// always forward releases
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sdl_Key(&event->key, qfalse);
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break;
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case SDL_TEXTINPUT:
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if (sdl_focused)
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sdl_Text(&event->text);
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break;
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case SDL_MOUSEMOTION:
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if (sdl_focused)
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sdl_MouseMotion(&event->motion);
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break;
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case SDL_MOUSEBUTTONDOWN:
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if (sdl_focused)
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sdl_MouseButton(&event->button, qtrue);
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break;
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case SDL_MOUSEBUTTONUP:
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// always forward releases
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sdl_MouseButton(&event->button, qfalse);
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break;
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case SDL_MOUSEWHEEL:
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if (sdl_focused)
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sdl_MouseWheel(&event->wheel);
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break;
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case SDL_WINDOWEVENT:
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sdl_Window(&event->window);
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break;
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case SDL_SYSWMEVENT:
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{
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const SDL_SysWMmsg* msg = event->syswm.msg;
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if (msg->subsystem == SDL_SYSWM_X11)
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sdl_X11(&msg->msg.x11.event);
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}
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break;
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default:
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break;
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}
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}
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qbool sdl_Init()
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{
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atexit(SDL_Quit);
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if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS) < 0) {
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fprintf(stderr, "Failed to initialize SDL 2: %s\n", SDL_GetError());
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return qfalse;
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}
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SDL_version version;
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SDL_GetVersion(&version);
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printf("Opened SDL %d.%d.%d\n", version.major, version.minor, version.patch);
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// @TODO: investigate/test these?
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// SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH
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// SDL_HINT_MOUSE_RELATIVE_MODE_WARP
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#if SDL_VERSION_ATLEAST(2, 0, 4)
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if (sdl_Version_AtLeast(2, 0, 4))
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SDL_SetHintWithPriority(SDL_HINT_NO_SIGNAL_HANDLERS, "1", SDL_HINT_OVERRIDE);
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#endif
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SDL_LogSetAllPriority(SDL_LOG_PRIORITY_CRITICAL);
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SDL_StartTextInput(); // enables SDL_TEXTINPUT events
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SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
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return qtrue;
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}
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void sdl_InitCvarsAndCmds()
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{
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Cvar_RegisterArray(in_cvars, MODULE_CLIENT);
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Cmd_RegisterArray(in_cmds, MODULE_CLIENT);
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}
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void sdl_PollEvents()
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{
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SDL_Event event;
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while (SDL_PollEvent(&event))
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sdl_Event(&event);
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}
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static qbool sdl_IsInputActive()
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{
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if (in_noGrab->integer)
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return qfalse;
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const qbool isConsoleDown = (cls.keyCatchers & KEYCATCH_CONSOLE) != 0;
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if (isConsoleDown && glimp.monitorCount >= 2)
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return qfalse;
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const qbool hasFocus = (SDL_GetWindowFlags(glimp.window) & SDL_WINDOW_INPUT_FOCUS) != 0;
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if (!hasFocus)
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return qfalse;
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const qbool isFullScreen = Cvar_VariableIntegerValue("r_fullscreen");
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if (isConsoleDown && !isFullScreen)
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return qfalse;
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return qtrue;
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}
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static void S_Frame()
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{
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if (sdl_forceUnmute) {
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sdl_MuteAudio(qfalse);
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return;
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}
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qbool mute = qfalse;
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if (s_autoMute->integer == AMM_UNFOCUSED) {
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const qbool hasFocus = (SDL_GetWindowFlags(glimp.window) & SDL_WINDOW_INPUT_FOCUS) != 0;
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mute = !hasFocus;
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} else if (s_autoMute->integer == AMM_MINIMIZED) {
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const Uint32 hidingFlags = SDL_WINDOW_HIDDEN | SDL_WINDOW_MINIMIZED;
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const qbool hidden = (SDL_GetWindowFlags(glimp.window) & hidingFlags) != 0;
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mute = hidden;
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}
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sdl_MuteAudio(mute);
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}
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void sdl_Frame()
|
|
{
|
|
sdl_inputActive = sdl_IsInputActive();
|
|
sdl_PollEvents();
|
|
|
|
SDL_SetRelativeMouseMode((sdl_inputActive && m_relative->integer) ? SDL_TRUE : SDL_FALSE);
|
|
SDL_SetWindowGrab(glimp.window, sdl_inputActive ? SDL_TRUE : SDL_FALSE);
|
|
SDL_ShowCursor(sdl_inputActive ? SDL_DISABLE : SDL_ENABLE);
|
|
// @NOTE: SDL_WarpMouseInWindow generates a motion event
|
|
|
|
S_Frame();
|
|
}
|
|
|
|
|
|
void Sys_InitInput()
|
|
{
|
|
}
|
|
|
|
|
|
void Sys_ShutdownInput()
|
|
{
|
|
}
|
|
|
|
|
|
// returns the number of bytes to skip
|
|
static int UTF8_ReadNextChar( char* c, const char* input )
|
|
{
|
|
if (*input == '\0')
|
|
return 0;
|
|
|
|
const byte byte0 = (byte)input[0];
|
|
if (byte0 <= 127) {
|
|
*c = (char)byte0;
|
|
return 1;
|
|
}
|
|
|
|
// Starts with 110?
|
|
if ((byte0 >> 5) == 6)
|
|
return 2;
|
|
|
|
// Starts with 1110?
|
|
if ((byte0 >> 4) == 14)
|
|
return 3;
|
|
|
|
// Starts with 11110?
|
|
if ((byte0 >> 3) == 30)
|
|
return 4;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
char* Sys_GetClipboardData()
|
|
{
|
|
if (SDL_HasClipboardText() == SDL_FALSE)
|
|
return NULL;
|
|
|
|
char* const textUTF8 = SDL_GetClipboardText();
|
|
if (textUTF8 == NULL)
|
|
return NULL;
|
|
|
|
// the cleaned up string can only be
|
|
// as long or shorter
|
|
char* const text = (char*)Z_Malloc(strlen(textUTF8) + 1);
|
|
if (text == NULL) {
|
|
SDL_free(textUTF8);
|
|
return NULL;
|
|
}
|
|
|
|
// clean up the text so we're sure
|
|
// the console can display it
|
|
char* d = text;
|
|
const char* s = textUTF8;
|
|
for (;;) {
|
|
char c;
|
|
const int bytes = UTF8_ReadNextChar(&c, s);
|
|
if (bytes == 0) {
|
|
*d = '\0';
|
|
break;
|
|
}
|
|
|
|
if (c >= 0x20 && c <= 0x7E)
|
|
*d++ = c;
|
|
s += bytes;
|
|
}
|
|
|
|
SDL_free(textUTF8);
|
|
|
|
return text;
|
|
}
|
|
|
|
|
|
void Lin_MatchStartAlert()
|
|
{
|
|
const int alerts = cl_matchAlerts->integer;
|
|
const qbool unmuteBit = (alerts & MAF_UNMUTE) != 0;
|
|
if (!unmuteBit)
|
|
return;
|
|
|
|
const qbool unfocusedBit = (alerts & MAF_UNFOCUSED) != 0;
|
|
const qbool hasFocus = (SDL_GetWindowFlags(glimp.window) & SDL_WINDOW_INPUT_FOCUS) != 0;
|
|
const Uint32 hidingFlags = SDL_WINDOW_HIDDEN | SDL_WINDOW_MINIMIZED;
|
|
const qbool hidden = (SDL_GetWindowFlags(glimp.window) & hidingFlags) != 0;
|
|
if (hidden || (unfocusedBit && !hasFocus))
|
|
sdl_forceUnmute = qtrue;
|
|
}
|
|
|
|
|
|
void Lin_MatchEndAlert()
|
|
{
|
|
sdl_forceUnmute = qfalse;
|
|
}
|
|
|
|
|
|
void Sys_MatchAlert( sysMatchAlertEvent_t event )
|
|
{
|
|
if (event == SMAE_MATCH_START)
|
|
Lin_MatchStartAlert();
|
|
else if (event == SMAE_MATCH_END)
|
|
Lin_MatchEndAlert();
|
|
}
|
|
|
|
|
|
qbool Sys_IsMinimized()
|
|
{
|
|
return (glimp.window != NULL) && (SDL_GetWindowFlags(glimp.window) & SDL_WINDOW_MINIMIZED) != 0;
|
|
}
|