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cursor: Fix "jumping opposite edges" issue when resizing

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Commit 08c537e ("xwayland: Honor size increments from
WM_SIZE_HINTS") adjusted only the window width/height according
to the size hints.  If resizing from the top or left edge of the
window, we also need to adjust the window position to keep the
bottom or right edge from jumping around.
This commit is contained in:
John Lindgren 2022-04-02 21:34:51 -04:00 • committed by Johan Malm
parent 47912aebb6
commit 8e1f115486
5 changed files with 59 additions and 78 deletions
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34
src/xwayland.c
View file

@ -119,21 +119,19 @@ handle_destroy(struct wl_listener *listener, void *data)
free(view);
}
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
static void
handle_request_configure(struct wl_listener *listener, void *data)
{
struct view *view = wl_container_of(listener, view, request_configure);
struct wlr_xwayland_surface_configure_event *event = data;
int min_width, min_height;
view_min_size(view, &min_width, &min_height);
int width = event->width;
int height = event->height;
view_adjust_size(view, &width, &height);
wlr_xwayland_surface_configure(view->xwayland_surface,
event->x, event->y, MAX(event->width, min_width),
MAX(event->height, min_height));
event->x, event->y, width, height);
}
#undef MAX
static void
handle_request_activate(struct wl_listener *listener, void *data)
@ -185,33 +183,9 @@ handle_set_class(struct wl_listener *listener, void *data)
view_update_app_id(view);
}
static int
round_to_increment(int val, int base, int inc)
{
if (base < 0 || inc <= 0) {
return val;
}
return base + (val - base + inc / 2) / inc * inc;
}
static void
configure(struct view *view, struct wlr_box geo)
{
/*
* Honor size increments from WM_SIZE_HINTS. Typically, X11 terminal
* emulators will use WM_SIZE_HINTS to make sure that the terminal is
* resized to a width/height evenly divisible by the cell (character)
* size.
*/
struct wlr_xwayland_surface_size_hints *hints =
view->xwayland_surface->size_hints;
if (hints) {
geo.width = round_to_increment(geo.width,
hints->base_width, hints->width_inc);
geo.height = round_to_increment(geo.height,
hints->base_height, hints->height_inc);
}
view->pending_move_resize.update_x = geo.x != view->x;
view->pending_move_resize.update_y = geo.y != view->y;
view->pending_move_resize.x = geo.x;