diff options
Diffstat (limited to 'widget/gtk/nsAppShell.cpp')
| -rw-r--r-- | widget/gtk/nsAppShell.cpp | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/widget/gtk/nsAppShell.cpp b/widget/gtk/nsAppShell.cpp new file mode 100644 index 0000000000..bea837605f --- /dev/null +++ b/widget/gtk/nsAppShell.cpp @@ -0,0 +1,424 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 tw=80: */ +/* 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/. */ + +#include <sys/types.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <gdk/gdk.h> +#include "nsAppShell.h" +#include "nsBaseAppShell.h" +#include "nsWindow.h" +#include "mozilla/Logging.h" +#include "prenv.h" +#include "mozilla/BackgroundHangMonitor.h" +#include "mozilla/Hal.h" +#include "mozilla/ProfilerLabels.h" +#include "mozilla/ProfilerThreadSleep.h" +#include "mozilla/Unused.h" +#include "mozilla/GUniquePtr.h" +#include "mozilla/WidgetUtils.h" +#include "nsIPowerManagerService.h" +#ifdef MOZ_ENABLE_DBUS +# include <dbus/dbus-glib-lowlevel.h> +# include <gio/gio.h> +# include "WakeLockListener.h" +# include "nsIObserverService.h" +#endif +#include "gfxPlatform.h" +#include "nsAppRunner.h" +#include "mozilla/XREAppData.h" +#include "ScreenHelperGTK.h" +#include "HeadlessScreenHelper.h" +#include "mozilla/widget/ScreenManager.h" +#ifdef MOZ_WAYLAND +# include "nsWaylandDisplay.h" +#endif + +using namespace mozilla; +using mozilla::widget::HeadlessScreenHelper; +using mozilla::widget::ScreenHelperGTK; +using mozilla::widget::ScreenManager; + +#define NOTIFY_TOKEN 0xFA + +LazyLogModule gWidgetLog("Widget"); +LazyLogModule gWidgetDragLog("WidgetDrag"); +LazyLogModule gWidgetWaylandLog("WidgetWayland"); +LazyLogModule gWidgetPopupLog("WidgetPopup"); +LazyLogModule gWidgetVsync("WidgetVsync"); +LazyLogModule gDmabufLog("Dmabuf"); +LazyLogModule gClipboardLog("WidgetClipboard"); + +static GPollFunc sPollFunc; + +// Wrapper function to disable hang monitoring while waiting in poll(). +static gint PollWrapper(GPollFD* aUfds, guint aNfsd, gint aTimeout) { + if (aTimeout == 0) { + // When the timeout is 0, there is no wait, so no point in notifying + // the BackgroundHangMonitor and the profiler. + return (*sPollFunc)(aUfds, aNfsd, aTimeout); + } + + mozilla::BackgroundHangMonitor().NotifyWait(); + gint result; + { + gint timeout = aTimeout; + gint64 begin = 0; + if (aTimeout != -1) { + begin = g_get_monotonic_time(); + } + + AUTO_PROFILER_LABEL("PollWrapper", IDLE); + AUTO_PROFILER_THREAD_SLEEP; + do { + result = (*sPollFunc)(aUfds, aNfsd, timeout); + + // The result will be -1 with the EINTR error if the poll was interrupted + // by a signal, typically the signal sent by the profiler to sample the + // process. We are only done waiting if we are not in that case. + if (result != -1 || errno != EINTR) { + break; + } + + if (aTimeout != -1) { + // Adjust the timeout to account for the time already spent waiting. + gint elapsedSinceBegin = (g_get_monotonic_time() - begin) / 1000; + if (elapsedSinceBegin < aTimeout) { + timeout = aTimeout - elapsedSinceBegin; + } else { + // poll returns 0 to indicate the call timed out before any fd + // became ready. + result = 0; + break; + } + } + } while (true); + } + mozilla::BackgroundHangMonitor().NotifyActivity(); + return result; +} + +// Emit resume-events on GdkFrameClock if flush-events has not been +// balanced by resume-events at dispose. +// For https://bugzilla.gnome.org/show_bug.cgi?id=742636 +static decltype(GObjectClass::constructed) sRealGdkFrameClockConstructed; +static decltype(GObjectClass::dispose) sRealGdkFrameClockDispose; +static GQuark sPendingResumeQuark; + +static void OnFlushEvents(GObject* clock, gpointer) { + g_object_set_qdata(clock, sPendingResumeQuark, GUINT_TO_POINTER(1)); +} + +static void OnResumeEvents(GObject* clock, gpointer) { + g_object_set_qdata(clock, sPendingResumeQuark, nullptr); +} + +static void WrapGdkFrameClockConstructed(GObject* object) { + sRealGdkFrameClockConstructed(object); + + g_signal_connect(object, "flush-events", G_CALLBACK(OnFlushEvents), nullptr); + g_signal_connect(object, "resume-events", G_CALLBACK(OnResumeEvents), + nullptr); +} + +static void WrapGdkFrameClockDispose(GObject* object) { + if (g_object_get_qdata(object, sPendingResumeQuark)) { + g_signal_emit_by_name(object, "resume-events"); + } + + sRealGdkFrameClockDispose(object); +} + +/*static*/ +gboolean nsAppShell::EventProcessorCallback(GIOChannel* source, + GIOCondition condition, + gpointer data) { + nsAppShell* self = static_cast<nsAppShell*>(data); + + unsigned char c; + Unused << read(self->mPipeFDs[0], &c, 1); + NS_ASSERTION(c == (unsigned char)NOTIFY_TOKEN, "wrong token"); + + self->NativeEventCallback(); + return TRUE; +} + +nsAppShell::~nsAppShell() { +#ifdef MOZ_ENABLE_DBUS + StopDBusListening(); +#endif + mozilla::hal::Shutdown(); + + if (mTag) g_source_remove(mTag); + if (mPipeFDs[0]) close(mPipeFDs[0]); + if (mPipeFDs[1]) close(mPipeFDs[1]); +} + +#ifdef MOZ_ENABLE_DBUS +static void SessionSleepCallback(DBusGProxy* aProxy, gboolean aSuspend, + gpointer data) { + nsCOMPtr<nsIObserverService> observerService = + mozilla::services::GetObserverService(); + if (!observerService) { + return; + } + + if (aSuspend) { + // Post sleep_notification + observerService->NotifyObservers(nullptr, NS_WIDGET_SLEEP_OBSERVER_TOPIC, + nullptr); + } else { + // Post wake_notification + observerService->NotifyObservers(nullptr, NS_WIDGET_WAKE_OBSERVER_TOPIC, + nullptr); + } +} + +static void TimedatePropertiesChangedCallback(DBusGProxy* aProxy, + char* interface, + GHashTable* aChanged, + char** aInvalidated, + gpointer aData) { + // dbus signals are not fine-grained enough for us to only react to timezone + // changes, so we need to ensure that timezone is one of the properties + // changed. + if (g_hash_table_contains(aChanged, "Timezone")) { + nsBaseAppShell::OnSystemTimezoneChange(); + } +} + +static DBusHandlerResult ConnectionSignalFilter(DBusConnection* aConnection, + DBusMessage* aMessage, + void* aData) { + if (dbus_message_is_signal(aMessage, DBUS_INTERFACE_LOCAL, "Disconnected")) { + auto* appShell = static_cast<nsAppShell*>(aData); + appShell->StopDBusListening(); + // We do not return DBUS_HANDLER_RESULT_HANDLED here because the connection + // might be shared and some other filters might want to do something. + } + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +// Based on +// https://github.com/lcp/NetworkManager/blob/240f47c892b4e935a3e92fc09eb15163d1fa28d8/src/nm-sleep-monitor-systemd.c +// Use login1 to signal sleep and wake notifications. +void nsAppShell::StartDBusListening() { + GUniquePtr<GError> error; + mDBusConnection = dbus_g_bus_get(DBUS_BUS_SYSTEM, getter_Transfers(error)); + if (!mDBusConnection) { + NS_WARNING(nsPrintfCString("gds: Failed to open connection to bus %s\n", + error->message) + .get()); + return; + } + + DBusConnection* dbusConnection = + dbus_g_connection_get_connection(mDBusConnection); + + // Make sure we do not exit the entire program if DBus connection gets + // lost. + dbus_connection_set_exit_on_disconnect(dbusConnection, false); + + // Listening to signals the DBus connection is going to get so we will + // know when it is lost and we will be able to disconnect cleanly. + dbus_connection_add_filter(dbusConnection, ConnectionSignalFilter, this, + nullptr); + + mLogin1Proxy = dbus_g_proxy_new_for_name( + mDBusConnection, "org.freedesktop.login1", "/org/freedesktop/login1", + "org.freedesktop.login1.Manager"); + + if (!mLogin1Proxy) { + NS_WARNING("gds: error creating login dbus proxy\n"); + return; + } + + dbus_g_proxy_add_signal(mLogin1Proxy, "PrepareForSleep", G_TYPE_BOOLEAN, + G_TYPE_INVALID); + dbus_g_proxy_connect_signal(mLogin1Proxy, "PrepareForSleep", + G_CALLBACK(SessionSleepCallback), this, nullptr); + + mTimedate1Proxy = dbus_g_proxy_new_for_name( + mDBusConnection, "org.freedesktop.timedate1", + "/org/freedesktop/timedate1", "org.freedesktop.DBus.Properties"); + + if (!mTimedate1Proxy) { + NS_WARNING("gds: error creating timedate dbus proxy\n"); + return; + } + + dbus_g_proxy_add_signal( + mTimedate1Proxy, "PropertiesChanged", G_TYPE_STRING, + dbus_g_type_get_map("GHashTable", G_TYPE_STRING, G_TYPE_VALUE), + G_TYPE_STRV, G_TYPE_INVALID); + dbus_g_proxy_connect_signal(mTimedate1Proxy, "PropertiesChanged", + G_CALLBACK(TimedatePropertiesChangedCallback), + this, nullptr); +} + +void nsAppShell::StopDBusListening() { + // If mDBusConnection isn't initialized, that means we are not really + // listening. + if (!mDBusConnection) { + return; + } + dbus_connection_remove_filter( + dbus_g_connection_get_connection(mDBusConnection), ConnectionSignalFilter, + this); + + if (mLogin1Proxy) { + dbus_g_proxy_disconnect_signal(mLogin1Proxy, "PrepareForSleep", + G_CALLBACK(SessionSleepCallback), this); + g_object_unref(mLogin1Proxy); + mLogin1Proxy = nullptr; + } + + if (mTimedate1Proxy) { + dbus_g_proxy_disconnect_signal( + mTimedate1Proxy, "PropertiesChanged", + G_CALLBACK(TimedatePropertiesChangedCallback), this); + g_object_unref(mTimedate1Proxy); + mTimedate1Proxy = nullptr; + } + + dbus_g_connection_unref(mDBusConnection); + mDBusConnection = nullptr; +} + +#endif + +nsresult nsAppShell::Init() { + mozilla::hal::Init(); + +#ifdef MOZ_ENABLE_DBUS + if (XRE_IsParentProcess()) { + nsCOMPtr<nsIPowerManagerService> powerManagerService = + do_GetService(POWERMANAGERSERVICE_CONTRACTID); + + if (powerManagerService) { + powerManagerService->AddWakeLockListener( + WakeLockListener::GetSingleton()); + } else { + NS_WARNING( + "Failed to retrieve PowerManagerService, wakelocks will be broken!"); + } + + StartDBusListening(); + } +#endif + + if (!sPollFunc) { + sPollFunc = g_main_context_get_poll_func(nullptr); + g_main_context_set_poll_func(nullptr, &PollWrapper); + } + + if (XRE_IsParentProcess()) { + ScreenManager& screenManager = ScreenManager::GetSingleton(); + if (gfxPlatform::IsHeadless()) { + screenManager.SetHelper(mozilla::MakeUnique<HeadlessScreenHelper>()); + } else { + screenManager.SetHelper(mozilla::MakeUnique<ScreenHelperGTK>()); + } + + if (gtk_check_version(3, 16, 3) == nullptr) { + // Before 3.16.3, GDK cannot override classname by --class command line + // option when program uses gdk_set_program_class(). + // + // See https://bugzilla.gnome.org/show_bug.cgi?id=747634 + // + // Only bother doing this for the parent process, since it's the one + // creating top-level windows. + if (gAppData) { + gdk_set_program_class(gAppData->remotingName); + } + } + } + + if (!sPendingResumeQuark && + gtk_check_version(3, 14, 7) != nullptr) { // GTK 3.0 to GTK 3.14.7. + // GTK 3.8 - 3.14 registered this type when creating the frame clock + // for the root window of the display when the display was opened. + GType gdkFrameClockIdleType = g_type_from_name("GdkFrameClockIdle"); + if (gdkFrameClockIdleType) { // not in versions prior to 3.8 + sPendingResumeQuark = g_quark_from_string("moz-resume-is-pending"); + auto gdk_frame_clock_idle_class = + G_OBJECT_CLASS(g_type_class_peek_static(gdkFrameClockIdleType)); + auto constructed = &gdk_frame_clock_idle_class->constructed; + sRealGdkFrameClockConstructed = *constructed; + *constructed = WrapGdkFrameClockConstructed; + auto dispose = &gdk_frame_clock_idle_class->dispose; + sRealGdkFrameClockDispose = *dispose; + *dispose = WrapGdkFrameClockDispose; + } + } + + // Workaround for bug 1209659 which is fixed by Gtk3.20 + if (gtk_check_version(3, 20, 0) != nullptr) { + unsetenv("GTK_CSD"); + } + + // Whitelist of only common, stable formats - see bugs 1197059 and 1203078 + GSList* pixbufFormats = gdk_pixbuf_get_formats(); + for (GSList* iter = pixbufFormats; iter; iter = iter->next) { + GdkPixbufFormat* format = static_cast<GdkPixbufFormat*>(iter->data); + gchar* name = gdk_pixbuf_format_get_name(format); + if (strcmp(name, "jpeg") && strcmp(name, "png") && strcmp(name, "gif") && + strcmp(name, "bmp") && strcmp(name, "ico") && strcmp(name, "xpm") && + strcmp(name, "svg") && strcmp(name, "webp") && strcmp(name, "avif")) { + gdk_pixbuf_format_set_disabled(format, TRUE); + } + g_free(name); + } + g_slist_free(pixbufFormats); + + int err = pipe(mPipeFDs); + if (err) return NS_ERROR_OUT_OF_MEMORY; + + GIOChannel* ioc; + GSource* source; + + // make the pipe nonblocking + + int flags = fcntl(mPipeFDs[0], F_GETFL, 0); + if (flags == -1) goto failed; + err = fcntl(mPipeFDs[0], F_SETFL, flags | O_NONBLOCK); + if (err == -1) goto failed; + flags = fcntl(mPipeFDs[1], F_GETFL, 0); + if (flags == -1) goto failed; + err = fcntl(mPipeFDs[1], F_SETFL, flags | O_NONBLOCK); + if (err == -1) goto failed; + + ioc = g_io_channel_unix_new(mPipeFDs[0]); + source = g_io_create_watch(ioc, G_IO_IN); + g_io_channel_unref(ioc); + g_source_set_callback(source, (GSourceFunc)EventProcessorCallback, this, + nullptr); + g_source_set_can_recurse(source, TRUE); + mTag = g_source_attach(source, nullptr); + g_source_unref(source); + + return nsBaseAppShell::Init(); +failed: + close(mPipeFDs[0]); + close(mPipeFDs[1]); + mPipeFDs[0] = mPipeFDs[1] = 0; + return NS_ERROR_FAILURE; +} + +void nsAppShell::ScheduleNativeEventCallback() { + unsigned char buf[] = {NOTIFY_TOKEN}; + Unused << write(mPipeFDs[1], buf, 1); +} + +bool nsAppShell::ProcessNextNativeEvent(bool mayWait) { + if (mSuspendNativeCount) { + return false; + } + bool didProcessEvent = g_main_context_iteration(nullptr, mayWait); + return didProcessEvent; +} |