From edb473cf468c781841bfbbfbd1dea337f32ba917 Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Fri, 15 Apr 2022 15:03:28 -0400
Subject: [PATCH] video: Wayland: Always round scaled pointer coordinates down
Rounding up can cause the pointer coordinates to exceed the window boundaries at the right and bottom edges.
---
src/video/wayland/SDL_waylandevents.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/video/wayland/SDL_waylandevents.c b/src/video/wayland/SDL_waylandevents.c
index b81c9db4a2e..ba85c1d6804 100644
--- a/src/video/wayland/SDL_waylandevents.c
+++ b/src/video/wayland/SDL_waylandevents.c
@@ -391,8 +391,8 @@ pointer_handle_motion(void *data, struct wl_pointer *pointer,
if (input->pointer_focus) {
const float sx_f = (float)wl_fixed_to_double(sx_w);
const float sy_f = (float)wl_fixed_to_double(sy_w);
- const int sx = (int)SDL_lroundf(sx_f * window->pointer_scale_x);
- const int sy = (int)SDL_lroundf(sy_f * window->pointer_scale_y);
+ const int sx = (int)SDL_floorf(sx_f * window->pointer_scale_x);
+ const int sy = (int)SDL_floorf(sy_f * window->pointer_scale_y);
SDL_SendMouseMotion(window->sdlwindow, 0, 0, sx, sy);
}
}
@@ -1826,8 +1826,8 @@ tablet_tool_handle_motion(void* data, struct zwp_tablet_tool_v2* tool, wl_fixed_
if (input->tool_focus) {
const float sx_f = (float)wl_fixed_to_double(sx_w);
const float sy_f = (float)wl_fixed_to_double(sy_w);
- const int sx = (int)SDL_lroundf(sx_f * window->pointer_scale_x);
- const int sy = (int)SDL_lroundf(sy_f * window->pointer_scale_y);
+ const int sx = (int)SDL_floorf(sx_f * window->pointer_scale_x);
+ const int sy = (int)SDL_floorf(sy_f * window->pointer_scale_y);
SDL_SendMouseMotion(window->sdlwindow, 0, 0, sx, sy);
}
}