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desktop-shell: extract view_get_transform, make it reliable

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Avoid crashes related to get_shell_surface returning NULL.

Surfaces are already allowed to be neither focus nor shell in
e.g. focus_state_surface_destroy.
This commit is contained in:
Greg V 2018-07-24 23:21:55 +03:00 committed by Daniel Stone
parent 13bdf25270
commit f57774e112
1 changed files with 24 additions and 15 deletions
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39
desktop-shell/shell.c
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@ -961,18 +961,31 @@ get_output_height(struct weston_output *output)
return abs(output->region.extents.y1 - output->region.extents.y2);
}
static struct weston_transform *
view_get_transform(struct weston_view *view)
{
struct focus_surface *fsurf = NULL;
struct shell_surface *shsurf = NULL;
if (is_focus_view(view)) {
fsurf = get_focus_surface(view->surface);
return &fsurf->workspace_transform;
}
shsurf = get_shell_surface(view->surface);
if (shsurf)
return &shsurf->workspace_transform;
return NULL;
}
static void
view_translate(struct workspace *ws, struct weston_view *view, double d)
{
struct weston_transform *transform;
struct weston_transform *transform = view_get_transform(view);
if (is_focus_view(view)) {
struct focus_surface *fsurf = get_focus_surface(view->surface);
transform = &fsurf->workspace_transform;
} else {
struct shell_surface *shsurf = get_shell_surface(view->surface);
transform = &shsurf->workspace_transform;
}
if (!transform)
return;
if (wl_list_empty(&transform->link))
wl_list_insert(view->geometry.transformation_list.prev,
@ -1044,13 +1057,9 @@ workspace_deactivate_transforms(struct workspace *ws)
struct weston_transform *transform;
wl_list_for_each(view, &ws->layer.view_list.link, layer_link.link) {
if (is_focus_view(view)) {
struct focus_surface *fsurf = get_focus_surface(view->surface);
transform = &fsurf->workspace_transform;
} else {
struct shell_surface *shsurf = get_shell_surface(view->surface);
transform = &shsurf->workspace_transform;
}
transform = view_get_transform(view);
if (!transform)
continue;
if (!wl_list_empty(&transform->link)) {
wl_list_remove(&transform->link);