зеркало из https://github.com/mozilla/gecko-dev.git
282 строки
8.5 KiB
C++
282 строки
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <gdk/gdk.h>
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#include "nsAppShell.h"
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#include "nsWindow.h"
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#include "mozilla/Logging.h"
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#include "prenv.h"
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#include "mozilla/HangMonitor.h"
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#include "mozilla/Unused.h"
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#include "GeckoProfiler.h"
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#include "nsIPowerManagerService.h"
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#ifdef MOZ_ENABLE_DBUS
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#include "WakeLockListener.h"
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#endif
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#include "gfxPlatform.h"
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#include "ScreenHelperGTK.h"
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#include "HeadlessScreenHelper.h"
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#include "mozilla/widget/ScreenManager.h"
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using mozilla::Unused;
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using mozilla::widget::ScreenHelperGTK;
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using mozilla::widget::HeadlessScreenHelper;
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using mozilla::widget::ScreenManager;
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using mozilla::LazyLogModule;
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#define NOTIFY_TOKEN 0xFA
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LazyLogModule gWidgetLog("Widget");
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LazyLogModule gWidgetFocusLog("WidgetFocus");
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LazyLogModule gWidgetDragLog("WidgetDrag");
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LazyLogModule gWidgetDrawLog("WidgetDraw");
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static GPollFunc sPollFunc;
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// Wrapper function to disable hang monitoring while waiting in poll().
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static gint
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PollWrapper(GPollFD *ufds, guint nfsd, gint timeout_)
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{
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mozilla::HangMonitor::Suspend();
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profiler_thread_sleep();
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gint result = (*sPollFunc)(ufds, nfsd, timeout_);
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profiler_thread_wake();
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mozilla::HangMonitor::NotifyActivity();
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return result;
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}
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#if MOZ_WIDGET_GTK == 3
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// For bug 726483.
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static decltype(GtkContainerClass::check_resize) sReal_gtk_window_check_resize;
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static void
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wrap_gtk_window_check_resize(GtkContainer *container)
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{
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GdkWindow* gdk_window = gtk_widget_get_window(&container->widget);
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if (gdk_window) {
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g_object_ref(gdk_window);
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}
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sReal_gtk_window_check_resize(container);
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if (gdk_window) {
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g_object_unref(gdk_window);
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}
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}
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// Emit resume-events on GdkFrameClock if flush-events has not been
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// balanced by resume-events at dispose.
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// For https://bugzilla.gnome.org/show_bug.cgi?id=742636
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static decltype(GObjectClass::constructed) sRealGdkFrameClockConstructed;
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static decltype(GObjectClass::dispose) sRealGdkFrameClockDispose;
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static GQuark sPendingResumeQuark;
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static void
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OnFlushEvents(GObject* clock, gpointer)
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{
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g_object_set_qdata(clock, sPendingResumeQuark, GUINT_TO_POINTER(1));
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}
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static void
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OnResumeEvents(GObject* clock, gpointer)
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{
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g_object_set_qdata(clock, sPendingResumeQuark, nullptr);
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}
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static void
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WrapGdkFrameClockConstructed(GObject* object)
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{
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sRealGdkFrameClockConstructed(object);
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g_signal_connect(object, "flush-events",
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G_CALLBACK(OnFlushEvents), nullptr);
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g_signal_connect(object, "resume-events",
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G_CALLBACK(OnResumeEvents), nullptr);
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}
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static void
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WrapGdkFrameClockDispose(GObject* object)
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{
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if (g_object_get_qdata(object, sPendingResumeQuark)) {
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g_signal_emit_by_name(object, "resume-events");
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}
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sRealGdkFrameClockDispose(object);
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}
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#endif
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/*static*/ gboolean
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nsAppShell::EventProcessorCallback(GIOChannel *source,
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GIOCondition condition,
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gpointer data)
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{
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nsAppShell *self = static_cast<nsAppShell *>(data);
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unsigned char c;
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Unused << read(self->mPipeFDs[0], &c, 1);
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NS_ASSERTION(c == (unsigned char) NOTIFY_TOKEN, "wrong token");
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self->NativeEventCallback();
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return TRUE;
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}
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nsAppShell::~nsAppShell()
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{
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if (mTag)
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g_source_remove(mTag);
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if (mPipeFDs[0])
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close(mPipeFDs[0]);
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if (mPipeFDs[1])
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close(mPipeFDs[1]);
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}
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nsresult
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nsAppShell::Init()
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{
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// For any versions of Glib before 2.36, g_type_init must be explicitly called
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// to safely use the library. Failure to do so may cause various failures/crashes
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// in any code that uses Glib, Gdk, or Gtk. In later versions of Glib, this call
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// is a no-op.
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g_type_init();
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#ifdef MOZ_ENABLE_DBUS
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if (XRE_IsParentProcess()) {
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nsCOMPtr<nsIPowerManagerService> powerManagerService =
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do_GetService(POWERMANAGERSERVICE_CONTRACTID);
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if (powerManagerService) {
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powerManagerService->AddWakeLockListener(WakeLockListener::GetSingleton());
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} else {
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NS_WARNING("Failed to retrieve PowerManagerService, wakelocks will be broken!");
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}
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}
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#endif
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if (!sPollFunc) {
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sPollFunc = g_main_context_get_poll_func(nullptr);
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g_main_context_set_poll_func(nullptr, &PollWrapper);
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}
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if (XRE_IsParentProcess()) {
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ScreenManager& screenManager = ScreenManager::GetSingleton();
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if (gfxPlatform::IsHeadless()) {
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screenManager.SetHelper(mozilla::MakeUnique<HeadlessScreenHelper>());
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} else {
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screenManager.SetHelper(mozilla::MakeUnique<ScreenHelperGTK>());
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}
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}
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#if MOZ_WIDGET_GTK == 3
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if (!sReal_gtk_window_check_resize &&
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gtk_check_version(3,8,0) != nullptr) { // GTK 3.0 to GTK 3.6.
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// GtkWindow is a static class and so will leak anyway but this ref
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// makes sure it isn't recreated.
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gpointer gtk_plug_class = g_type_class_ref(GTK_TYPE_WINDOW);
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auto check_resize = >K_CONTAINER_CLASS(gtk_plug_class)->check_resize;
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sReal_gtk_window_check_resize = *check_resize;
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*check_resize = wrap_gtk_window_check_resize;
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}
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if (!sPendingResumeQuark &&
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gtk_check_version(3,14,7) != nullptr) { // GTK 3.0 to GTK 3.14.7.
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// GTK 3.8 - 3.14 registered this type when creating the frame clock
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// for the root window of the display when the display was opened.
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GType gdkFrameClockIdleType = g_type_from_name("GdkFrameClockIdle");
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if (gdkFrameClockIdleType) { // not in versions prior to 3.8
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sPendingResumeQuark = g_quark_from_string("moz-resume-is-pending");
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auto gdk_frame_clock_idle_class =
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G_OBJECT_CLASS(g_type_class_peek_static(gdkFrameClockIdleType));
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auto constructed = &gdk_frame_clock_idle_class->constructed;
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sRealGdkFrameClockConstructed = *constructed;
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*constructed = WrapGdkFrameClockConstructed;
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auto dispose = &gdk_frame_clock_idle_class->dispose;
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sRealGdkFrameClockDispose = *dispose;
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*dispose = WrapGdkFrameClockDispose;
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}
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}
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// Workaround for bug 1209659 which is fixed by Gtk3.20
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if (gtk_check_version(3, 20, 0) != nullptr)
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unsetenv("GTK_CSD");
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#endif
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if (PR_GetEnv("MOZ_DEBUG_PAINTS"))
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gdk_window_set_debug_updates(TRUE);
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// Whitelist of only common, stable formats - see bugs 1197059 and 1203078
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GSList* pixbufFormats = gdk_pixbuf_get_formats();
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for (GSList* iter = pixbufFormats; iter; iter = iter->next) {
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GdkPixbufFormat* format = static_cast<GdkPixbufFormat*>(iter->data);
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gchar* name = gdk_pixbuf_format_get_name(format);
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if (strcmp(name, "jpeg") &&
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strcmp(name, "png") &&
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strcmp(name, "gif") &&
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strcmp(name, "bmp") &&
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strcmp(name, "ico") &&
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strcmp(name, "xpm") &&
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strcmp(name, "svg")) {
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gdk_pixbuf_format_set_disabled(format, TRUE);
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}
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g_free(name);
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}
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g_slist_free(pixbufFormats);
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int err = pipe(mPipeFDs);
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if (err)
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return NS_ERROR_OUT_OF_MEMORY;
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GIOChannel *ioc;
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GSource *source;
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// make the pipe nonblocking
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int flags = fcntl(mPipeFDs[0], F_GETFL, 0);
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if (flags == -1)
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goto failed;
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err = fcntl(mPipeFDs[0], F_SETFL, flags | O_NONBLOCK);
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if (err == -1)
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goto failed;
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flags = fcntl(mPipeFDs[1], F_GETFL, 0);
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if (flags == -1)
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goto failed;
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err = fcntl(mPipeFDs[1], F_SETFL, flags | O_NONBLOCK);
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if (err == -1)
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goto failed;
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ioc = g_io_channel_unix_new(mPipeFDs[0]);
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source = g_io_create_watch(ioc, G_IO_IN);
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g_io_channel_unref(ioc);
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g_source_set_callback(source, (GSourceFunc)EventProcessorCallback, this, nullptr);
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g_source_set_can_recurse(source, TRUE);
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mTag = g_source_attach(source, nullptr);
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g_source_unref(source);
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return nsBaseAppShell::Init();
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failed:
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close(mPipeFDs[0]);
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close(mPipeFDs[1]);
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mPipeFDs[0] = mPipeFDs[1] = 0;
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return NS_ERROR_FAILURE;
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}
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void
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nsAppShell::ScheduleNativeEventCallback()
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{
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unsigned char buf[] = { NOTIFY_TOKEN };
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Unused << write(mPipeFDs[1], buf, 1);
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}
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bool
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nsAppShell::ProcessNextNativeEvent(bool mayWait)
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{
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return g_main_context_iteration(nullptr, mayWait);
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}
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