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Mouse coordinates are floating point

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You can get sub-pixel mouse coordinates and motion depending on the platform and display scaling.

Fixes https://github.com/libsdl-org/SDL/issues/2999
This commit is contained in:
Sam Lantinga
2022-12-29 19:31:12 -08:00
parent 8c3239dee5
commit cefbeb582f
52 changed files with 564 additions and 654 deletions
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4
src/core/haiku/SDL_BApp.h
View File

@@ -254,12 +254,12 @@ class SDL_BApp : public BApplication
SDL_GetWindowPosition(win, &winPosX, &winPosY);
int dx = x - (winWidth / 2);
int dy = y - (winHeight / 2);
SDL_SendMouseMotion(0, win, 0, SDL_GetMouse()->relative_mode, dx, dy);
SDL_SendMouseMotion(0, win, 0, SDL_GetMouse()->relative_mode, (float)dx, (float)dy);
set_mouse_position((winPosX + winWidth / 2), (winPosY + winHeight / 2));
if (!be_app->IsCursorHidden())
be_app->HideCursor();
} else {
SDL_SendMouseMotion(0, win, 0, 0, x, y);
SDL_SendMouseMotion(0, win, 0, 0, (float)x, (float)y);
if (SDL_CursorVisible() && be_app->IsCursorHidden())
be_app->ShowCursor();
}

2
src/core/linux/SDL_evdev.c
View File

@@ -448,7 +448,7 @@ void SDL_EVDEV_Poll(void)
case SYN_REPORT:
/* Send mouse axis changes together to ensure consistency and reduce event processing overhead */
if (item->mouse_x != 0 || item->mouse_y != 0) {
SDL_SendMouseMotion(SDL_EVDEV_GetEventTimestamp(event), mouse->focus, (SDL_MouseID)item->fd, item->relative_mouse, item->mouse_x, item->mouse_y);
SDL_SendMouseMotion(SDL_EVDEV_GetEventTimestamp(event), mouse->focus, (SDL_MouseID)item->fd, item->relative_mouse, (float)item->mouse_x, (float)item->mouse_y);
item->mouse_x = item->mouse_y = 0;
}
if (item->mouse_wheel != 0 || item->mouse_hwheel != 0) {

4
src/core/openbsd/SDL_wscons_mouse.c
View File

@@ -100,12 +100,12 @@ void updateMouse(SDL_WSCONS_mouse_input_data *inputData)
} break;
case WSCONS_EVENT_MOUSE_DELTA_X:
{
SDL_SendMouseMotion(0, mouse->focus, mouse->mouseID, 1, events[i].value, 0);
SDL_SendMouseMotion(0, mouse->focus, mouse->mouseID, 1, (float)events[i].value, 0.0f);
break;
}
case WSCONS_EVENT_MOUSE_DELTA_Y:
{
SDL_SendMouseMotion(0, mouse->focus, mouse->mouseID, 1, 0, -events[i].value);
SDL_SendMouseMotion(0, mouse->focus, mouse->mouseID, 1, 0.0f, -(float)events[i].value);
break;
}
case WSCONS_EVENT_MOUSE_DELTA_W:

2
src/core/winrt/SDL_winrtapp_direct3d.cpp
View File

@@ -547,7 +547,7 @@ void SDL_WinRTApp::OnWindowActivated(CoreWindow ^ sender, WindowActivatedEventAr
*/
#if (WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP) || (NTDDI_VERSION >= NTDDI_WINBLUE)
Point cursorPos = WINRT_TransformCursorPosition(window, sender->PointerPosition, TransformToSDLWindowSize);
SDL_SendMouseMotion(0, window, 0, 0, (int)cursorPos.X, (int)cursorPos.Y);
SDL_SendMouseMotion(0, window, 0, 0, cursorPos.X, cursorPos.Y);
#endif
/* TODO, WinRT: see if the Win32 bugfix from https://hg.libsdl.org/SDL/rev/d278747da408 needs to be applied (on window activation) */