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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* MozContainerWayland is a wrapper over MozContainer which provides
* wl_surface for MozContainer widget.
*
* The widget scheme looks like:
*
* ---------------------------------------------------------
* | mShell Gtk widget (contains wl_surface owned by Gtk+) |
* | |
* | --------------------------------------------------- |
* | | mContainer (contains wl_surface owned by Gtk+) | |
* | | | |
* | | --------------------------------------------- | |
* | | | wl_subsurface (attached to wl_surface | | |
* | | | of mContainer) | | |
* | | | | | |
* | | | | | |
* | | --------------------------------------------- | |
* | --------------------------------------------------- |
* ---------------------------------------------------------
*
* We draw to wl_subsurface owned by MozContainerWayland.
* We need to wait until wl_surface of mContainer is created
* and then we create and attach our wl_subsurface to it.
*
* First wl_subsurface creation has these steps:
*
* 1) moz_container_wayland_size_allocate() handler is called when
* mContainer size/position is known.
* It calls moz_container_wayland_surface_create_locked(), registers
* a frame callback handler
* moz_container_wayland_frame_callback_handler().
*
* 2) moz_container_wayland_frame_callback_handler() is called
* when wl_surface owned by mozContainer is ready.
* We call initial_draw_cbs() handler and we can create our wl_subsurface
* on top of wl_surface owned by mozContainer.
*
* When MozContainer hides/show again, moz_container_wayland_size_allocate()
* handler may not be called as MozContainer size is set. So after first
* show/hide sequence use moz_container_wayland_map_event() to create
* wl_subsurface of MozContainer.
*/
#include "MozContainer.h"
#include <dlfcn.h>
#include <glib.h>
#include <stdio.h>
#include <wayland-egl.h>
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/StaticPrefs_widget.h"
#include "nsGtkUtils.h"
#include "nsWaylandDisplay.h"
#include "base/task.h"
#ifdef MOZ_LOGGING
# include "mozilla/Logging.h"
# include "nsTArray.h"
# include "Units.h"
# include "nsWindow.h"
extern mozilla::LazyLogModule gWidgetWaylandLog;
# define LOGWAYLAND(args) \
MOZ_LOG(gWidgetWaylandLog, mozilla::LogLevel::Debug, args)
#else
# define LOGWAYLAND(args)
#endif /* MOZ_LOGGING */
using namespace mozilla;
using namespace mozilla::widget;
/* init methods */
static void moz_container_wayland_destroy(GtkWidget* widget);
/* widget class methods */
static void moz_container_wayland_map(GtkWidget* widget);
static gboolean moz_container_wayland_map_event(GtkWidget* widget,
GdkEventAny* event);
static void moz_container_wayland_unmap(GtkWidget* widget);
static void moz_container_wayland_size_allocate(GtkWidget* widget,
GtkAllocation* allocation);
static bool moz_container_wayland_surface_create_locked(
MozContainer* container);
static void moz_container_wayland_set_opaque_region_locked(
MozContainer* container);
// Imlemented in MozContainer.cpp
void moz_container_realize(GtkWidget* widget);
// Invalidate gtk wl_surface to commit changes to wl_subsurface.
// wl_subsurface changes are effective when parent surface is commited.
static void moz_container_wayland_invalidate(MozContainer* container) {
LOGWAYLAND(("moz_container_wayland_invalidate [%p]\n",
(void*)moz_container_get_nsWindow(container)));
GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(container));
if (!window) {
LOGWAYLAND((" Failed - missing GdkWindow!\n"));
return;
}
gdk_window_invalidate_rect(window, nullptr, true);
}
// Route input to parent wl_surface owned by Gtk+ so we get input
// events from Gtk+.
static void moz_container_clear_input_region(MozContainer* container) {
struct wl_compositor* compositor = WaylandDisplayGet()->GetCompositor();
MozContainerWayland* wl_container = &container->wl_container;
wl_region* region = wl_compositor_create_region(compositor);
wl_surface_set_input_region(wl_container->surface, region);
wl_region_destroy(region);
}
static void moz_container_wayland_move_locked(MozContainer* container, int dx,
int dy) {
LOGWAYLAND(("moz_container_wayland_move [%p] %d,%d\n",
(void*)moz_container_get_nsWindow(container), dx, dy));
MozContainerWayland* wl_container = &container->wl_container;
if (!wl_container->subsurface || (wl_container->subsurface_dx == dx &&
wl_container->subsurface_dy == dy)) {
return;
}
wl_container->subsurface_dx = dx;
wl_container->subsurface_dy = dy;
wl_subsurface_set_position(wl_container->subsurface,
wl_container->subsurface_dx,
wl_container->subsurface_dy);
}
// This is called from layout/compositor code only with
// size equal to GL rendering context. Otherwise there are
// rendering artifacts as wl_egl_window size does not match
// GL rendering pipeline setup.
void moz_container_wayland_egl_window_set_size(MozContainer* container,
int width, int height) {
MozContainerWayland* wl_container = &container->wl_container;
MutexAutoLock lock(*wl_container->container_lock);
if (wl_container->eglwindow) {
wl_egl_window_resize(wl_container->eglwindow, width, height, 0, 0);
}
}
void moz_container_wayland_class_init(MozContainerClass* klass) {
/*GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass); */
GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass);
widget_class->map = moz_container_wayland_map;
widget_class->map_event = moz_container_wayland_map_event;
widget_class->destroy = moz_container_wayland_destroy;
widget_class->unmap = moz_container_wayland_unmap;
widget_class->realize = moz_container_realize;
widget_class->size_allocate = moz_container_wayland_size_allocate;
}
void moz_container_wayland_init(MozContainerWayland* container) {
container->surface = nullptr;
container->subsurface = nullptr;
container->eglwindow = nullptr;
container->frame_callback_handler = nullptr;
container->viewport = nullptr;
container->ready_to_draw = false;
container->opaque_region_needs_updates = false;
container->opaque_region_corner_radius = 0;
container->opaque_region_used = false;
container->subsurface_dx = 0;
container->subsurface_dy = 0;
container->before_first_size_alloc = true;
container->buffer_scale = 1;
container->initial_draw_cbs.clear();
container->container_lock = new mozilla::Mutex("MozContainer lock");
container->commit_to_parent = false;
}
static void moz_container_wayland_destroy(GtkWidget* widget) {
MozContainerWayland* container = &MOZ_CONTAINER(widget)->wl_container;
moz_container_wayland_clear_initial_draw_callback(MOZ_CONTAINER(widget));
delete container->container_lock;
container->container_lock = nullptr;
}
void moz_container_wayland_add_initial_draw_callback(
MozContainer* container, const std::function<void(void)>& initial_draw_cb) {
MozContainerWayland* wl_container = &MOZ_CONTAINER(container)->wl_container;
if (wl_container->ready_to_draw) {
initial_draw_cb();
} else {
wl_container->initial_draw_cbs.push_back(initial_draw_cb);
}
}
void moz_container_wayland_clear_initial_draw_callback(
MozContainer* container) {
MozContainerWayland* wl_container = &MOZ_CONTAINER(container)->wl_container;
g_clear_pointer(&wl_container->frame_callback_handler, wl_callback_destroy);
wl_container->initial_draw_cbs.clear();
}
static void moz_container_wayland_frame_callback_handler(
void* data, struct wl_callback* callback, uint32_t time) {
MozContainerWayland* wl_container = &MOZ_CONTAINER(data)->wl_container;
LOGWAYLAND(
("%s [%p] frame_callback_handler %p ready_to_draw %d (set to true)"
" initial_draw callback %zd\n",
__FUNCTION__, (void*)moz_container_get_nsWindow(MOZ_CONTAINER(data)),
(void*)wl_container->frame_callback_handler, wl_container->ready_to_draw,
wl_container->initial_draw_cbs.size()));
g_clear_pointer(&wl_container->frame_callback_handler, wl_callback_destroy);
if (!wl_container->ready_to_draw) {
wl_container->ready_to_draw = true;
for (auto const& cb : wl_container->initial_draw_cbs) {
cb();
}
wl_container->initial_draw_cbs.clear();
}
}
static const struct wl_callback_listener moz_container_frame_listener = {
moz_container_wayland_frame_callback_handler};
static void after_frame_clock_after_paint(GdkFrameClock* clock,
MozContainer* container) {
struct wl_surface* surface = moz_container_wayland_surface_lock(container);
if (surface) {
wl_surface_commit(surface);
moz_container_wayland_surface_unlock(container, &surface);
}
}
static bool moz_gdk_wayland_window_add_frame_callback_surface_locked(
MozContainer* container) {
static auto sGdkWaylandWindowAddCallbackSurface =
(void (*)(GdkWindow*, struct wl_surface*))dlsym(
RTLD_DEFAULT, "gdk_wayland_window_add_frame_callback_surface");
if (!StaticPrefs::widget_wayland_opaque_region_enabled_AtStartup() ||
!sGdkWaylandWindowAddCallbackSurface) {
return false;
}
GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(container));
MozContainerWayland* wl_container = &container->wl_container;
sGdkWaylandWindowAddCallbackSurface(window, wl_container->surface);
GdkFrameClock* frame_clock = gdk_window_get_frame_clock(window);
g_signal_connect_after(frame_clock, "after-paint",
G_CALLBACK(after_frame_clock_after_paint), container);
return true;
}
static void moz_gdk_wayland_window_remove_frame_callback_surface_locked(
MozContainer* container) {
static auto sGdkWaylandWindowRemoveCallbackSurface =
(void (*)(GdkWindow*, struct wl_surface*))dlsym(
RTLD_DEFAULT, "gdk_wayland_window_remove_frame_callback_surface");
if (!sGdkWaylandWindowRemoveCallbackSurface) {
return;
}
GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(container));
MozContainerWayland* wl_container = &container->wl_container;
if (wl_container->surface) {
sGdkWaylandWindowRemoveCallbackSurface(window, wl_container->surface);
}
GdkFrameClock* frame_clock = gdk_window_get_frame_clock(window);
g_signal_handlers_disconnect_by_func(
frame_clock, FuncToGpointer(after_frame_clock_after_paint), container);
}
static void moz_container_wayland_unmap_internal(MozContainer* container) {
MozContainerWayland* wl_container = &container->wl_container;
MutexAutoLock lock(*wl_container->container_lock);
LOGWAYLAND(("%s [%p]\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(container)));
moz_container_wayland_clear_initial_draw_callback(container);
if (wl_container->opaque_region_used) {
moz_gdk_wayland_window_remove_frame_callback_surface_locked(container);
}
if (wl_container->commit_to_parent) {
wl_container->surface = nullptr;
}
g_clear_pointer(&wl_container->eglwindow, wl_egl_window_destroy);
g_clear_pointer(&wl_container->subsurface, wl_subsurface_destroy);
g_clear_pointer(&wl_container->surface, wl_surface_destroy);
g_clear_pointer(&wl_container->viewport, wp_viewport_destroy);
wl_container->ready_to_draw = false;
wl_container->buffer_scale = 1;
}
static gboolean moz_container_wayland_map_event(GtkWidget* widget,
GdkEventAny* event) {
MozContainerWayland* wl_container = &MOZ_CONTAINER(widget)->wl_container;
LOGWAYLAND(("%s [%p]\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(MOZ_CONTAINER(widget))));
// Don't create wl_subsurface in map_event when it's already created or
// if we create it for the first time.
if (wl_container->ready_to_draw || wl_container->before_first_size_alloc) {
return FALSE;
}
MutexAutoLock lock(*wl_container->container_lock);
if (!wl_container->surface) {
if (!moz_container_wayland_surface_create_locked(MOZ_CONTAINER(widget))) {
return FALSE;
}
}
moz_container_wayland_set_scale_factor_locked(MOZ_CONTAINER(widget));
moz_container_wayland_set_opaque_region_locked(MOZ_CONTAINER(widget));
moz_container_clear_input_region(MOZ_CONTAINER(widget));
moz_container_wayland_invalidate(MOZ_CONTAINER(widget));
return FALSE;
}
void moz_container_wayland_map(GtkWidget* widget) {
LOGWAYLAND(("%s [%p]\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(MOZ_CONTAINER(widget))));
g_return_if_fail(IS_MOZ_CONTAINER(widget));
gtk_widget_set_mapped(widget, TRUE);
if (gtk_widget_get_has_window(widget)) {
gdk_window_show(gtk_widget_get_window(widget));
}
}
void moz_container_wayland_unmap(GtkWidget* widget) {
LOGWAYLAND(("%s [%p]\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(MOZ_CONTAINER(widget))));
g_return_if_fail(IS_MOZ_CONTAINER(widget));
gtk_widget_set_mapped(widget, FALSE);
if (gtk_widget_get_has_window(widget)) {
gdk_window_hide(gtk_widget_get_window(widget));
moz_container_wayland_unmap_internal(MOZ_CONTAINER(widget));
}
}
void moz_container_wayland_size_allocate(GtkWidget* widget,
GtkAllocation* allocation) {
MozContainer* container;
GtkAllocation tmp_allocation;
g_return_if_fail(IS_MOZ_CONTAINER(widget));
LOGWAYLAND(("moz_container_wayland_size_allocate [%p] %d,%d -> %d x %d\n",
(void*)moz_container_get_nsWindow(MOZ_CONTAINER(widget)),
allocation->x, allocation->y, allocation->width,
allocation->height));
/* short circuit if you can */
container = MOZ_CONTAINER(widget);
gtk_widget_get_allocation(widget, &tmp_allocation);
if (!container->children && tmp_allocation.x == allocation->x &&
tmp_allocation.y == allocation->y &&
tmp_allocation.width == allocation->width &&
tmp_allocation.height == allocation->height) {
return;
}
gtk_widget_set_allocation(widget, allocation);
if (gtk_widget_get_has_window(widget) && gtk_widget_get_realized(widget)) {
gdk_window_move_resize(gtk_widget_get_window(widget), allocation->x,
allocation->y, allocation->width,
allocation->height);
// We need to position our subsurface according to GdkWindow
// when offset changes (GdkWindow is maximized for instance).
// see gtk-clutter-embed.c for reference.
MutexAutoLock lock(*container->wl_container.container_lock);
if (!container->wl_container.surface) {
if (!moz_container_wayland_surface_create_locked(container)) {
return;
}
}
moz_container_wayland_set_scale_factor_locked(container);
moz_container_wayland_set_opaque_region_locked(container);
moz_container_wayland_move_locked(container, allocation->x, allocation->y);
moz_container_clear_input_region(container);
moz_container_wayland_invalidate(MOZ_CONTAINER(widget));
container->wl_container.before_first_size_alloc = false;
}
}
static wl_region* moz_container_wayland_create_opaque_region(
int aX, int aY, int aWidth, int aHeight, int aCornerRadius) {
struct wl_compositor* compositor = WaylandDisplayGet()->GetCompositor();
wl_region* region = wl_compositor_create_region(compositor);
wl_region_add(region, aX, aY, aWidth, aHeight);
if (aCornerRadius) {
wl_region_subtract(region, aX, aY, aCornerRadius, aCornerRadius);
wl_region_subtract(region, aX + aWidth - aCornerRadius, aY, aCornerRadius,
aCornerRadius);
}
return region;
}
static void moz_container_wayland_set_opaque_region_locked(
MozContainer* container) {
MozContainerWayland* wl_container = &container->wl_container;
if (!wl_container->opaque_region_needs_updates) {
return;
}
if (!wl_container->opaque_region_used) {
wl_container->opaque_region_needs_updates = false;
return;
}
GtkAllocation allocation;
gtk_widget_get_allocation(GTK_WIDGET(container), &allocation);
wl_region* region = moz_container_wayland_create_opaque_region(
0, 0, allocation.width, allocation.height,
wl_container->opaque_region_corner_radius);
wl_surface_set_opaque_region(wl_container->surface, region);
wl_region_destroy(region);
wl_container->opaque_region_needs_updates = false;
}
static void moz_container_wayland_set_opaque_region(MozContainer* container) {
MozContainerWayland* wl_container = &container->wl_container;
MutexAutoLock lock(*wl_container->container_lock);
if (wl_container->surface) {
moz_container_wayland_set_opaque_region_locked(container);
}
}
void moz_container_wayland_set_scale_factor_locked(MozContainer* container) {
if (gfx::gfxVars::UseWebRenderCompositor()) {
// the compositor backend handles scaling itself
return;
}
MozContainerWayland* wl_container = &container->wl_container;
nsWindow* window = moz_container_get_nsWindow(container);
if (window && window->UseFractionalScale()) {
if (!wl_container->viewport) {
wl_container->viewport = wp_viewporter_get_viewport(
WaylandDisplayGet()->GetViewporter(), wl_container->surface);
}
GdkWindow* gdkWindow = gtk_widget_get_window(GTK_WIDGET(container));
wp_viewport_set_destination(wl_container->viewport,
gdk_window_get_width(gdkWindow),
gdk_window_get_height(gdkWindow));
} else {
int scale = window ? window->GdkCeiledScaleFactor() : 1;
if (scale == wl_container->buffer_scale) {
return;
}
LOGWAYLAND(("%s [%p] scale %d\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(container), scale));
wl_surface_set_buffer_scale(wl_container->surface, scale);
wl_container->buffer_scale = scale;
}
}
void moz_container_wayland_set_scale_factor(MozContainer* container) {
MutexAutoLock lock(*container->wl_container.container_lock);
if (container->wl_container.surface) {
moz_container_wayland_set_scale_factor_locked(container);
}
}
static bool moz_container_wayland_surface_create_locked(
MozContainer* container) {
MozContainerWayland* wl_container = &container->wl_container;
LOGWAYLAND(("%s [%p]\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(container)));
GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(container));
wl_surface* parent_surface = gdk_wayland_window_get_wl_surface(window);
if (!parent_surface) {
LOGWAYLAND((" Failed - missing parent surface!"));
return false;
}
LOGWAYLAND((" gtk wl_surface %p ID %d\n", (void*)parent_surface,
wl_proxy_get_id((struct wl_proxy*)parent_surface)));
if (wl_container->commit_to_parent) {
LOGWAYLAND((" commit to parent"));
wl_container->surface = parent_surface;
NS_DispatchToCurrentThread(NewRunnableFunction(
"moz_container_wayland_frame_callback_handler",
&moz_container_wayland_frame_callback_handler, container, nullptr, 0));
return true;
}
// Available as of GTK 3.8+
struct wl_compositor* compositor = WaylandDisplayGet()->GetCompositor();
wl_container->surface = wl_compositor_create_surface(compositor);
if (!wl_container->surface) {
LOGWAYLAND((" Failed - can't create surface!"));
return false;
}
wl_container->subsurface =
wl_subcompositor_get_subsurface(WaylandDisplayGet()->GetSubcompositor(),
wl_container->surface, parent_surface);
if (!wl_container->subsurface) {
g_clear_pointer(&wl_container->surface, wl_surface_destroy);
LOGWAYLAND((" Failed - can't create sub-surface!"));
return false;
}
wl_subsurface_set_desync(wl_container->subsurface);
// Try to guess subsurface offset to avoid potential flickering.
int dx, dy;
if (moz_container_get_nsWindow(container)->GetCSDDecorationOffset(&dx, &dy)) {
wl_container->subsurface_dx = dx;
wl_container->subsurface_dy = dy;
wl_subsurface_set_position(wl_container->subsurface, dx, dy);
LOGWAYLAND((" guessing subsurface position %d %d\n", dx, dy));
}
// If there's pending frame callback it's for wrong parent surface,
// so delete it.
if (wl_container->frame_callback_handler) {
g_clear_pointer(&wl_container->frame_callback_handler, wl_callback_destroy);
}
wl_container->frame_callback_handler = wl_surface_frame(parent_surface);
wl_callback_add_listener(wl_container->frame_callback_handler,
&moz_container_frame_listener, container);
LOGWAYLAND((
" created frame callback ID %d\n",
wl_proxy_get_id((struct wl_proxy*)wl_container->frame_callback_handler)));
wl_surface_commit(wl_container->surface);
wl_display_flush(WaylandDisplayGet()->GetDisplay());
wl_container->opaque_region_used =
moz_gdk_wayland_window_add_frame_callback_surface_locked(container);
LOGWAYLAND((" created surface %p ID %d\n", (void*)wl_container->surface,
wl_proxy_get_id((struct wl_proxy*)wl_container->surface)));
return true;
}
struct wl_surface* moz_container_wayland_surface_lock(MozContainer* container) {
// LOGWAYLAND(("%s [%p] surface %p ready_to_draw %d\n", __FUNCTION__,
// (void*)container, (void*)container->wl_container.surface,
// container->wl_container.ready_to_draw));
if (!container->wl_container.surface ||
!container->wl_container.ready_to_draw) {
return nullptr;
}
container->wl_container.container_lock->Lock();
return container->wl_container.surface;
}
void moz_container_wayland_surface_unlock(MozContainer* container,
struct wl_surface** surface) {
// Temporary disabled to avoid log noise
// LOGWAYLAND(("%s [%p] surface %p\n", __FUNCTION__, (void*)container,
// (void*)container->wl_container.surface));
if (*surface) {
container->wl_container.container_lock->Unlock();
*surface = nullptr;
}
}
struct wl_surface* moz_container_wayland_get_surface_locked(
MozContainer* container) {
LOGWAYLAND(("%s [%p] surface %p ready_to_draw %d\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(container),
(void*)container->wl_container.surface,
container->wl_container.ready_to_draw));
if (!container->wl_container.surface ||
!container->wl_container.ready_to_draw) {
return nullptr;
}
moz_container_wayland_set_scale_factor_locked(container);
return container->wl_container.surface;
}
void moz_container_wayland_lock(MozContainer* container) {
container->wl_container.container_lock->Lock();
}
void moz_container_wayland_unlock(MozContainer* container) {
container->wl_container.container_lock->Unlock();
}
struct wl_egl_window* moz_container_wayland_get_egl_window(
MozContainer* container, double scale) {
MozContainerWayland* wl_container = &container->wl_container;
LOGWAYLAND(("%s [%p] eglwindow %p\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(container),
(void*)wl_container->eglwindow));
MutexAutoLock lock(*wl_container->container_lock);
if (!wl_container->surface || !wl_container->ready_to_draw) {
return nullptr;
}
if (!wl_container->eglwindow) {
GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(container));
wl_container->eglwindow = wl_egl_window_create(
wl_container->surface, (int)round(gdk_window_get_width(window) * scale),
(int)round(gdk_window_get_height(window) * scale));
LOGWAYLAND(("%s [%p] created eglwindow %p\n", __FUNCTION__,
(void*)moz_container_get_nsWindow(container),
(void*)wl_container->eglwindow));
}
return wl_container->eglwindow;
}
gboolean moz_container_wayland_has_egl_window(MozContainer* container) {
return container->wl_container.eglwindow != nullptr;
}
void moz_container_wayland_update_opaque_region(MozContainer* container,
int corner_radius) {
MozContainerWayland* wl_container = &container->wl_container;
wl_container->opaque_region_needs_updates = true;
wl_container->opaque_region_corner_radius = corner_radius;
// When GL compositor / WebRender is used,
// moz_container_wayland_get_egl_window() is called only once when window
// is created or resized so update opaque region now.
if (moz_container_wayland_has_egl_window(container)) {
moz_container_wayland_set_opaque_region(container);
}
}
gboolean moz_container_wayland_can_draw(MozContainer* container) {
return container ? container->wl_container.ready_to_draw : false;
}
double moz_container_wayland_get_scale(MozContainer* container) {
nsWindow* window = moz_container_get_nsWindow(container);
return window ? window->FractionalScaleFactor() : 1;
}
void moz_container_wayland_set_commit_to_parent(MozContainer* container) {
MozContainerWayland* wl_container = &container->wl_container;
wl_container->commit_to_parent = true;
}
bool moz_container_wayland_is_commiting_to_parent(MozContainer* container) {
MozContainerWayland* wl_container = &container->wl_container;
return wl_container->commit_to_parent;
}