static void PollEvent()
{
poll_mouse();
bool mouse_action = false;
/* Mouse buttons */
static int prev_button_state;
if (prev_button_state != mouse_b) {
uint diff = prev_button_state ^ mouse_b;
while (diff != 0) {
uint button = FindFirstBit(diff);
ClrBit(diff, button);
if (HasBit(mouse_b, button)) {
/* Pressed mouse button */
if (_rightclick_emulate && (key_shifts & KB_CTRL_FLAG)) {
button = RIGHT_BUTTON;
ClrBit(diff, RIGHT_BUTTON);
}
switch (button) {
case LEFT_BUTTON:
_left_button_down = true;
break;
case RIGHT_BUTTON:
_right_button_down = true;
_right_button_clicked = true;
break;
default:
/* ignore rest */
break;
}
} else {
/* Released mouse button */
if (_rightclick_emulate) {
_right_button_down = false;
_left_button_down = false;
_left_button_clicked = false;
} else if (button == LEFT_BUTTON) {
_left_button_down = false;
_left_button_clicked = false;
} else if (button == RIGHT_BUTTON) {
_right_button_down = false;
}
}
}
prev_button_state = mouse_b;
mouse_action = true;
}
/* Mouse movement */
int dx = mouse_x - _cursor.pos.x;
int dy = mouse_y - _cursor.pos.y;
if (dx != 0 || dy != 0) {
if (_cursor.fix_at) {
_cursor.delta.x = dx;
_cursor.delta.y = dy;
position_mouse(_cursor.pos.x, _cursor.pos.y);
} else {
_cursor.delta.x = dx;
_cursor.delta.y = dy;
_cursor.pos.x = mouse_x;
_cursor.pos.y = mouse_y;
_cursor.dirty = true;
}
mouse_action = true;
}
static int prev_mouse_z = 0;
if (prev_mouse_z != mouse_z) {
_cursor.wheel = (prev_mouse_z - mouse_z) < 0 ? -1 : 1;
prev_mouse_z = mouse_z;
mouse_action = true;
}
if (mouse_action) HandleMouseEvents();
poll_keyboard();
if ((key_shifts & KB_ALT_FLAG) && (key[KEY_ENTER] || key[KEY_F])) {
ToggleFullScreen(!_fullscreen);
} else if (keypressed()) {
WChar character;
uint keycode = ConvertAllegroKeyIntoMy(&character);
HandleKeypress(keycode, character);
}
}
int VideoDriver_SDL::PollEvent()
{
SDL_Event ev;
if (!SDL_CALL SDL_PollEvent(&ev)) return -2;
switch (ev.type) {
case SDL_MOUSEMOTION:
if (_cursor.fix_at) {
int dx = ev.motion.x - _cursor.pos.x;
int dy = ev.motion.y - _cursor.pos.y;
if (dx != 0 || dy != 0) {
_cursor.delta.x = dx;
_cursor.delta.y = dy;
SDL_CALL SDL_WarpMouse(_cursor.pos.x, _cursor.pos.y);
}
} else {
_cursor.delta.x = ev.motion.x - _cursor.pos.x;
_cursor.delta.y = ev.motion.y - _cursor.pos.y;
_cursor.pos.x = ev.motion.x;
_cursor.pos.y = ev.motion.y;
_cursor.dirty = true;
}
HandleMouseEvents();
break;
case SDL_MOUSEBUTTONDOWN:
if (_rightclick_emulate && SDL_CALL SDL_GetModState() & KMOD_CTRL) {
ev.button.button = SDL_BUTTON_RIGHT;
}
switch (ev.button.button) {
case SDL_BUTTON_LEFT:
_left_button_down = true;
break;
case SDL_BUTTON_RIGHT:
_right_button_down = true;
_right_button_clicked = true;
break;
case SDL_BUTTON_WHEELUP: _cursor.wheel--; break;
case SDL_BUTTON_WHEELDOWN: _cursor.wheel++; break;
default: break;
}
HandleMouseEvents();
break;
case SDL_MOUSEBUTTONUP:
if (_rightclick_emulate) {
_right_button_down = false;
_left_button_down = false;
_left_button_clicked = false;
} else if (ev.button.button == SDL_BUTTON_LEFT) {
_left_button_down = false;
_left_button_clicked = false;
} else if (ev.button.button == SDL_BUTTON_RIGHT) {
_right_button_down = false;
}
HandleMouseEvents();
break;
case SDL_ACTIVEEVENT:
if (!(ev.active.state & SDL_APPMOUSEFOCUS)) break;
if (ev.active.gain) { // mouse entered the window, enable cursor
_cursor.in_window = true;
} else {
UndrawMouseCursor(); // mouse left the window, undraw cursor
_cursor.in_window = false;
}
break;
case SDL_QUIT:
HandleExitGameRequest();
break;
case SDL_KEYDOWN: // Toggle full-screen on ALT + ENTER/F
if ((ev.key.keysym.mod & (KMOD_ALT | KMOD_META)) &&
(ev.key.keysym.sym == SDLK_RETURN || ev.key.keysym.sym == SDLK_f)) {
ToggleFullScreen(!_fullscreen);
} else {
HandleKeypress(ConvertSdlKeyIntoMy(&ev.key.keysym));
}
break;
case SDL_VIDEORESIZE: {
int w = max(ev.resize.w, 64);
int h = max(ev.resize.h, 64);
CreateMainSurface(w, h);
break;
}
case SDL_VIDEOEXPOSE: {
/* Force a redraw of the entire screen. Note
* that SDL 1.2 seems to do this automatically
* in most cases, but 1.3 / 2.0 does not. */
_num_dirty_rects = MAX_DIRTY_RECTS + 1;
break;
}
}
return -1;
}
/** Forward key presses to the window system. */
static LRESULT HandleCharMsg(uint keycode, WChar charcode)
{
#if !defined(UNICODE)
static char prev_char = 0;
char input[2] = {(char)charcode, 0};
int input_len = 1;
if (prev_char != 0) {
/* We stored a lead byte previously, combine it with this byte. */
input[0] = prev_char;
input[1] = (char)charcode;
input_len = 2;
} else if (IsDBCSLeadByte(charcode)) {
/* We got a lead byte, store and exit. */
prev_char = charcode;
return 0;
}
prev_char = 0;
wchar_t w[2]; // Can get up to two code points as a result.
int len = MultiByteToWideChar(CP_ACP, 0, input, input_len, w, 2);
switch (len) {
case 1: // Normal unicode character.
charcode = w[0];
break;
case 2: // Got an UTF-16 surrogate pair back.
charcode = Utf16DecodeSurrogate(w[0], w[1]);
break;
default: // Some kind of error.
DEBUG(driver, 1, "Invalid DBCS character sequence encountered, dropping input");
charcode = 0;
break;
}
#else
static WChar prev_char = 0;
/* Did we get a lead surrogate? If yes, store and exit. */
if (Utf16IsLeadSurrogate(charcode)) {
if (prev_char != 0) DEBUG(driver, 1, "Got two UTF-16 lead surrogates, dropping the first one");
prev_char = charcode;
return 0;
}
/* Stored lead surrogate and incoming trail surrogate? Combine and forward to input handling. */
if (prev_char != 0) {
if (Utf16IsTrailSurrogate(charcode)) {
charcode = Utf16DecodeSurrogate(prev_char, charcode);
} else {
DEBUG(driver, 1, "Got an UTF-16 lead surrogate without a trail surrogate, dropping the lead surrogate");
}
}
prev_char = 0;
#endif /* UNICODE */
HandleKeypress(keycode, charcode);
return 0;
}
