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moonlight-qt/app/streaming/input/keyboard.cpp

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#include "streaming/session.h"
#include <Limelight.h>
#include <SDL.h>
#include <QGuiApplication>
// Until we can fully capture these on all platforms (without conflicting with
// OS-provided shortcuts), we should avoid passing them through to the host.
//#define ENABLE_META
#define VK_0 0x30
#define VK_A 0x41
// These are real Windows VK_* codes
#ifndef VK_F1
#define VK_F1 0x70
#define VK_F13 0x7C
#define VK_NUMPAD0 0x60
#endif
void SdlInputHandler::handleKeyEvent(SDL_KeyboardEvent* event)
{
short keyCode;
char modifiers;
// Check for our special key combos
if ((event->state == SDL_PRESSED) &&
(event->keysym.mod & KMOD_CTRL) &&
(event->keysym.mod & KMOD_ALT) &&
(event->keysym.mod & KMOD_SHIFT)) {
// First we test the SDLK combos for matches,
// that way we ensure that latin keyboard users
// can match to the key they see on their keyboards.
// If nothing matches that, we'll then go on to
// checking scancodes so non-latin keyboard users
// can have working hotkeys (though possibly in
// odd positions). We must do all SDLK tests before
// any scancode tests to avoid issues in cases
// where the SDLK for one shortcut collides with
// the scancode of another.
// Check for quit combo (Ctrl+Alt+Shift+Q)
if (event->keysym.sym == SDLK_q) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected quit key combo (SDLK)");
// Push a quit event to the main loop
SDL_Event event;
event.type = SDL_QUIT;
event.quit.timestamp = SDL_GetTicks();
SDL_PushEvent(&event);
return;
}
// Check for the unbind combo (Ctrl+Alt+Shift+Z) unless on EGLFS which has no window manager
else if (event->keysym.sym == SDLK_z && QGuiApplication::platformName() != "eglfs") {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected mouse capture toggle combo (SDLK)");
// Stop handling future input
setCaptureActive(!isCaptureActive());
// Force raise all keys to ensure they aren't stuck,
// since we won't get their key up events.
raiseAllKeys();
return;
}
// Check for the mouse mode combo (Ctrl+Alt+Shift+M) unless on EGLFS which has no window manager
else if (event->keysym.sym == SDLK_m && QGuiApplication::platformName() != "eglfs") {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected mouse mode toggle combo (SDLK)");
// Uncapture input
setCaptureActive(false);
// Toggle mouse mode
m_AbsoluteMouseMode = !m_AbsoluteMouseMode;
// Recapture input
setCaptureActive(true);
return;
}
else if (event->keysym.sym == SDLK_x && QGuiApplication::platformName() != "eglfs") {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected full-screen toggle combo (SDLK)");
Session::s_ActiveSession->toggleFullscreen();
// Force raise all keys just be safe across this full-screen/windowed
// transition just in case key events get lost.
raiseAllKeys();
return;
}
// Check for overlay combo (Ctrl+Alt+Shift+S)
else if (event->keysym.sym == SDLK_s) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected stats toggle combo (SDLK)");
// Toggle the stats overlay
Session::get()->getOverlayManager().setOverlayState(Overlay::OverlayDebug,
!Session::get()->getOverlayManager().isOverlayEnabled(Overlay::OverlayDebug));
// Force raise all keys just be safe across this full-screen/windowed
// transition just in case key events get lost.
raiseAllKeys();
return;
}
// Check for mouse show combo (Ctrl+Alt+Shift+C)
else if (event->keysym.sym == SDLK_c) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected show mouse combo (SDLK)");
if (!SDL_GetRelativeMouseMode()) {
SDL_ShowCursor(!SDL_ShowCursor(SDL_QUERY));
}
else {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Cursor can only be shown in remote desktop mouse mode");
}
return;
}
// Check for quit combo (Ctrl+Alt+Shift+Q)
else if (event->keysym.scancode == SDL_SCANCODE_Q) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected quit key combo (scancode)");
// Push a quit event to the main loop
SDL_Event event;
event.type = SDL_QUIT;
event.quit.timestamp = SDL_GetTicks();
SDL_PushEvent(&event);
return;
}
// Check for the unbind combo (Ctrl+Alt+Shift+Z)
else if (event->keysym.scancode == SDL_SCANCODE_Z && QGuiApplication::platformName() != "eglfs") {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected mouse capture toggle combo (scancode)");
// Stop handling future input
setCaptureActive(!isCaptureActive());
// Force raise all keys to ensure they aren't stuck,
// since we won't get their key up events.
raiseAllKeys();
return;
}
// Check for the full-screen combo (Ctrl+Alt+Shift+X) unless on EGLFS which has no window manager
else if (event->keysym.scancode == SDL_SCANCODE_X && QGuiApplication::platformName() != "eglfs") {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected full-screen toggle combo (scancode)");
Session::s_ActiveSession->toggleFullscreen();
// Force raise all keys just be safe across this full-screen/windowed
// transition just in case key events get lost.
raiseAllKeys();
return;
}
// Check for the mouse mode toggle combo (Ctrl+Alt+Shift+M) unless on EGLFS which has no window manager
else if (event->keysym.scancode == SDL_SCANCODE_M && QGuiApplication::platformName() != "eglfs") {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected mouse mode toggle combo (scancode)");
// Uncapture input
setCaptureActive(false);
// Toggle mouse mode
m_AbsoluteMouseMode = !m_AbsoluteMouseMode;
// Recapture input
setCaptureActive(true);
return;
}
else if (event->keysym.scancode == SDL_SCANCODE_S) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected stats toggle combo (scancode)");
// Toggle the stats overlay
Session::get()->getOverlayManager().setOverlayState(Overlay::OverlayDebug,
!Session::get()->getOverlayManager().isOverlayEnabled(Overlay::OverlayDebug));
// Force raise all keys just be safe across this full-screen/windowed
// transition just in case key events get lost.
raiseAllKeys();
return;
}
// Check for mouse show combo (Ctrl+Alt+Shift+C)
else if (event->keysym.sym == SDL_SCANCODE_C) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected show mouse combo (scancode)");
if (!SDL_GetRelativeMouseMode()) {
SDL_ShowCursor(!SDL_ShowCursor(SDL_QUERY));
}
else {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"Cursor can only be shown in remote desktop mouse mode");
}
return;
}
}
if (event->repeat) {
// Ignore repeat key down events
SDL_assert(event->state == SDL_PRESSED);
return;
}
// Set modifier flags
modifiers = 0;
if (event->keysym.mod & KMOD_CTRL) {
modifiers |= MODIFIER_CTRL;
}
if (event->keysym.mod & KMOD_ALT) {
modifiers |= MODIFIER_ALT;
}
if (event->keysym.mod & KMOD_SHIFT) {
modifiers |= MODIFIER_SHIFT;
}
#ifdef ENABLE_META
if (event->keysym.mod & KMOD_GUI) {
modifiers |= MODIFIER_META;
}
#endif
// Set keycode. We explicitly use scancode here because GFE will try to correct
// for AZERTY layouts on the host but it depends on receiving VK_ values matching
// a QWERTY layout to work.
if (event->keysym.scancode >= SDL_SCANCODE_1 && event->keysym.scancode <= SDL_SCANCODE_9) {
// SDL defines SDL_SCANCODE_0 > SDL_SCANCODE_9, so we need to handle that manually
keyCode = (event->keysym.scancode - SDL_SCANCODE_1) + VK_0 + 1;
}
else if (event->keysym.scancode >= SDL_SCANCODE_A && event->keysym.scancode <= SDL_SCANCODE_Z) {
keyCode = (event->keysym.scancode - SDL_SCANCODE_A) + VK_A;
}
else if (event->keysym.scancode >= SDL_SCANCODE_F1 && event->keysym.scancode <= SDL_SCANCODE_F12) {
keyCode = (event->keysym.scancode - SDL_SCANCODE_F1) + VK_F1;
}
else if (event->keysym.scancode >= SDL_SCANCODE_F13 && event->keysym.scancode <= SDL_SCANCODE_F24) {
keyCode = (event->keysym.scancode - SDL_SCANCODE_F13) + VK_F13;
}
else if (event->keysym.scancode >= SDL_SCANCODE_KP_1 && event->keysym.scancode <= SDL_SCANCODE_KP_9) {
// SDL defines SDL_SCANCODE_KP_0 > SDL_SCANCODE_KP_9, so we need to handle that manually
keyCode = (event->keysym.scancode - SDL_SCANCODE_KP_1) + VK_NUMPAD0 + 1;
}
else {
switch (event->keysym.scancode) {
case SDL_SCANCODE_BACKSPACE:
keyCode = 0x08;
break;
case SDL_SCANCODE_TAB:
keyCode = 0x09;
break;
case SDL_SCANCODE_CLEAR:
keyCode = 0x0C;
break;
case SDL_SCANCODE_KP_ENTER: // FIXME: Is this correct?
case SDL_SCANCODE_RETURN:
keyCode = 0x0D;
break;
case SDL_SCANCODE_PAUSE:
keyCode = 0x13;
break;
case SDL_SCANCODE_CAPSLOCK:
keyCode = 0x14;
break;
case SDL_SCANCODE_ESCAPE:
keyCode = 0x1B;
break;
case SDL_SCANCODE_SPACE:
keyCode = 0x20;
break;
case SDL_SCANCODE_PAGEUP:
keyCode = 0x21;
break;
case SDL_SCANCODE_PAGEDOWN:
keyCode = 0x22;
break;
case SDL_SCANCODE_END:
keyCode = 0x23;
break;
case SDL_SCANCODE_HOME:
keyCode = 0x24;
break;
case SDL_SCANCODE_LEFT:
keyCode = 0x25;
break;
case SDL_SCANCODE_UP:
keyCode = 0x26;
break;
case SDL_SCANCODE_RIGHT:
keyCode = 0x27;
break;
case SDL_SCANCODE_DOWN:
keyCode = 0x28;
break;
case SDL_SCANCODE_SELECT:
keyCode = 0x29;
break;
case SDL_SCANCODE_EXECUTE:
keyCode = 0x2B;
break;
case SDL_SCANCODE_PRINTSCREEN:
keyCode = 0x2C;
break;
case SDL_SCANCODE_INSERT:
keyCode = 0x2D;
break;
case SDL_SCANCODE_DELETE:
keyCode = 0x2E;
break;
case SDL_SCANCODE_HELP:
keyCode = 0x2F;
break;
case SDL_SCANCODE_KP_0:
// See comment above about why we only handle SDL_SCANCODE_KP_0 here
keyCode = VK_NUMPAD0;
break;
case SDL_SCANCODE_0:
// See comment above about why we only handle SDL_SCANCODE_0 here
keyCode = VK_0;
break;
case SDL_SCANCODE_KP_MULTIPLY:
keyCode = 0x6A;
break;
case SDL_SCANCODE_KP_PLUS:
keyCode = 0x6B;
break;
case SDL_SCANCODE_KP_COMMA:
keyCode = 0x6C;
break;
case SDL_SCANCODE_KP_MINUS:
keyCode = 0x6D;
break;
case SDL_SCANCODE_KP_PERIOD:
keyCode = 0x6E;
break;
case SDL_SCANCODE_KP_DIVIDE:
keyCode = 0x6F;
break;
case SDL_SCANCODE_NUMLOCKCLEAR:
keyCode = 0x90;
break;
case SDL_SCANCODE_SCROLLLOCK:
keyCode = 0x91;
break;
case SDL_SCANCODE_LSHIFT:
keyCode = 0xA0;
break;
case SDL_SCANCODE_RSHIFT:
keyCode = 0xA1;
break;
case SDL_SCANCODE_LCTRL:
keyCode = 0xA2;
break;
case SDL_SCANCODE_RCTRL:
keyCode = 0xA3;
break;
case SDL_SCANCODE_LALT:
keyCode = 0xA4;
break;
case SDL_SCANCODE_RALT:
keyCode = 0xA5;
break;
#ifdef ENABLE_META
case SDL_SCANCODE_LGUI:
keyCode = 0x5B;
break;
case SDL_SCANCODE_RGUI:
keyCode = 0x5C;
break;
#endif
case SDL_SCANCODE_AC_BACK:
keyCode = 0xA6;
break;
case SDL_SCANCODE_AC_FORWARD:
keyCode = 0xA7;
break;
case SDL_SCANCODE_AC_REFRESH:
keyCode = 0xA8;
break;
case SDL_SCANCODE_AC_STOP:
keyCode = 0xA9;
break;
case SDL_SCANCODE_AC_SEARCH:
keyCode = 0xAA;
break;
case SDL_SCANCODE_AC_BOOKMARKS:
keyCode = 0xAB;
break;
case SDL_SCANCODE_AC_HOME:
keyCode = 0xAC;
break;
case SDL_SCANCODE_SEMICOLON:
keyCode = 0xBA;
break;
case SDL_SCANCODE_EQUALS:
keyCode = 0xBB;
break;
case SDL_SCANCODE_COMMA:
keyCode = 0xBC;
break;
case SDL_SCANCODE_MINUS:
keyCode = 0xBD;
break;
case SDL_SCANCODE_PERIOD:
keyCode = 0xBE;
break;
case SDL_SCANCODE_SLASH:
keyCode = 0xBF;
break;
case SDL_SCANCODE_GRAVE:
keyCode = 0xC0;
break;
case SDL_SCANCODE_LEFTBRACKET:
keyCode = 0xDB;
break;
case SDL_SCANCODE_BACKSLASH:
keyCode = 0xDC;
break;
case SDL_SCANCODE_RIGHTBRACKET:
keyCode = 0xDD;
break;
case SDL_SCANCODE_APOSTROPHE:
keyCode = 0xDE;
break;
case SDL_SCANCODE_NONUSBACKSLASH:
keyCode = 0xE2;
break;
default:
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Unhandled button event: %d",
event->keysym.scancode);
return;
}
}
// Track the key state so we always know which keys are down
if (event->state == SDL_PRESSED) {
m_KeysDown.insert(keyCode);
}
else {
m_KeysDown.remove(keyCode);
}
LiSendKeyboardEvent(keyCode,
event->state == SDL_PRESSED ?
KEY_ACTION_DOWN : KEY_ACTION_UP,
modifiers);
}
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