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Wayland: Fix cursor offset when shape changes

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The Wayland protocol spec[1] states that set_cursor must be called
with the serial number of the enter event.  However, GLFW is passing in
the serial number of the latest received event, which does not meet the
protocol spec.

[1] https://wayland.freedesktop.org/docs/html/apa.html#protocol-spec-wl_pointer

As a result, set_cursor calls were simply ignored by the compositor.

This fix complies with the protocol more closely by specifically caching
the enter event serial, and using it for all set_cursor calls.

Fixes #1706
Closes #1899
This commit is contained in:
Waris Boonyasiriwat
2021-05-12 00:30:14 -07:00
committed by Camilla Löwy
parent 4cbe743b74
commit e7758c506d
4 changed files with 9 additions and 5 deletions
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src/wl_init.c
+2 -1
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@@ -118,6 +118,7 @@ static void pointerHandleEnter(void* data,
window->wl.decorations.focus = focus;
_glfw.wl.serial = serial;
_glfw.wl.pointerEnterSerial = serial;
_glfw.wl.pointerFocus = window;
window->wl.hovered = GLFW_TRUE;
@@ -177,7 +178,7 @@ static void setCursor(_GLFWwindow* window, const char* name)
buffer = wl_cursor_image_get_buffer(image);
if (!buffer)
return;
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial,
surface,
image->hotspot_x / scale,
image->hotspot_y / scale);