Guarantee that we don't dispatch any mouse motion from before or including the last mouse warp

This commit is contained in:
Sam Lantinga 2021-10-07 15:04:06 -07:00
parent 649466f491
commit 16aeb8d0f5
3 changed files with 16 additions and 9 deletions

View File

@ -1550,6 +1550,16 @@ WIN_PumpEvents(_THIS)
g_WindowsMessageHook(g_WindowsMessageHookData, msg.hwnd, msg.message, msg.wParam, msg.lParam);
}
/* Don't dispatch any mouse motion queued prior to or including the last mouse warp */
if (msg.message == WM_MOUSEMOVE && SDL_last_warp_time) {
if (!SDL_TICKS_PASSED(msg.time, (SDL_last_warp_time + 1))) {
continue;
}
/* This mouse message happened after the warp */
SDL_last_warp_time = 0;
}
/* Always translate the message in case it's a non-SDL window (e.g. with Qt integration) */
TranslateMessage(&msg);
DispatchMessage(&msg);

View File

@ -27,6 +27,7 @@
#include "../../events/SDL_mouse_c.h"
DWORD SDL_last_warp_time = 0;
HCURSOR SDL_cursor = NULL;
static SDL_Cursor *SDL_blank_cursor = NULL;
@ -253,16 +254,11 @@ WIN_WarpMouse(SDL_Window * window, int x, int y)
SetCursorPos(pt.x, pt.y);
/* Flush any pending mouse motion and simulate motion for this warp */
{
SDL_Mouse *mouse = SDL_GetMouse();
const SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
MSG msg;
while (PeekMessage(&msg, data->hwnd, WM_MOUSEMOVE, WM_MOUSEMOVE, PM_REMOVE)) {
continue;
}
SDL_SendMouseMotion(window, mouse->mouseID, 0, x, y);
SDL_last_warp_time = GetTickCount();
if (!SDL_last_warp_time) {
SDL_last_warp_time = 1;
}
SDL_SendMouseMotion(window, SDL_GetMouse()->mouseID, 0, x, y);
}
static int

View File

@ -23,6 +23,7 @@
#ifndef SDL_windowsmouse_h_
#define SDL_windowsmouse_h_
extern DWORD SDL_last_warp_time;
extern HCURSOR SDL_cursor;
extern void WIN_InitMouse(_THIS);