Add m-esr52 at 52.6.0

1 files changed, 271 insertions, 0 deletions

diff --git a/widget/gtk/nsAppShell.cpp b/widget/gtk/nsAppShell.cpp
new file mode 100644
index 000000000..5473dd883
--- /dev/null
+++ b/widget/gtk/nsAppShell.cpp
@@ -0,0 +1,271 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <gdk/gdk.h>
+#include "nsAppShell.h"
+#include "nsWindow.h"
+#include "mozilla/Logging.h"
+#include "prenv.h"
+#include "mozilla/HangMonitor.h"
+#include "mozilla/Unused.h"
+#include "GeckoProfiler.h"
+#include "nsIPowerManagerService.h"
+#ifdef MOZ_ENABLE_DBUS
+#include "WakeLockListener.h"
+#endif
+
+using mozilla::Unused;
+
+#define NOTIFY_TOKEN 0xFA
+
+PRLogModuleInfo *gWidgetLog = nullptr;
+PRLogModuleInfo *gWidgetFocusLog = nullptr;
+PRLogModuleInfo *gWidgetDragLog = nullptr;
+PRLogModuleInfo *gWidgetDrawLog = nullptr;
+
+static GPollFunc sPollFunc;
+
+// Wrapper function to disable hang monitoring while waiting in poll().
+static gint
+PollWrapper(GPollFD *ufds, guint nfsd, gint timeout_)
+{
+    mozilla::HangMonitor::Suspend();
+    profiler_sleep_start();
+    gint result = (*sPollFunc)(ufds, nfsd, timeout_);
+    profiler_sleep_end();
+    mozilla::HangMonitor::NotifyActivity();
+    return result;
+}
+
+#if MOZ_WIDGET_GTK == 3
+// For bug 726483.
+static decltype(GtkContainerClass::check_resize) sReal_gtk_window_check_resize;
+
+static void
+wrap_gtk_window_check_resize(GtkContainer *container)
+{
+    GdkWindow* gdk_window = gtk_widget_get_window(&container->widget);
+    if (gdk_window) {
+        g_object_ref(gdk_window);
+    }
+
+    sReal_gtk_window_check_resize(container);
+
+    if (gdk_window) {
+        g_object_unref(gdk_window);
+    }
+}
+
+// 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);
+}
+#endif
+
+/*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()
+{
+    if (mTag)
+        g_source_remove(mTag);
+    if (mPipeFDs[0])
+        close(mPipeFDs[0]);
+    if (mPipeFDs[1])
+        close(mPipeFDs[1]);
+}
+
+nsresult
+nsAppShell::Init()
+{
+    // For any versions of Glib before 2.36, g_type_init must be explicitly called
+    // to safely use the library. Failure to do so may cause various failures/crashes
+    // in any code that uses Glib, Gdk, or Gtk. In later versions of Glib, this call
+    // is a no-op.
+    g_type_init();
+
+    if (!gWidgetLog)
+        gWidgetLog = PR_NewLogModule("Widget");
+    if (!gWidgetFocusLog)
+        gWidgetFocusLog = PR_NewLogModule("WidgetFocus");
+    if (!gWidgetDragLog)
+        gWidgetDragLog = PR_NewLogModule("WidgetDrag");
+    if (!gWidgetDrawLog)
+        gWidgetDrawLog = PR_NewLogModule("WidgetDraw");
+
+#ifdef MOZ_ENABLE_DBUS
+    nsCOMPtr<nsIPowerManagerService> powerManagerService =
+      do_GetService(POWERMANAGERSERVICE_CONTRACTID);
+
+    if (powerManagerService) {
+        powerManagerService->AddWakeLockListener(WakeLockListener::GetSingleton());
+    } else {
+        NS_WARNING("Failed to retrieve PowerManagerService, wakelocks will be broken!");
+    }
+#endif
+
+    if (!sPollFunc) {
+        sPollFunc = g_main_context_get_poll_func(nullptr);
+        g_main_context_set_poll_func(nullptr, &PollWrapper);
+    }
+
+#if MOZ_WIDGET_GTK == 3
+    if (!sReal_gtk_window_check_resize &&
+        gtk_check_version(3,8,0) != nullptr) { // GTK 3.0 to GTK 3.6.
+        // GtkWindow is a static class and so will leak anyway but this ref
+        // makes sure it isn't recreated.
+        gpointer gtk_plug_class = g_type_class_ref(GTK_TYPE_WINDOW);
+        auto check_resize = &GTK_CONTAINER_CLASS(gtk_plug_class)->check_resize;
+        sReal_gtk_window_check_resize = *check_resize;
+        *check_resize = wrap_gtk_window_check_resize;
+    }
+
+    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");
+#endif
+
+    if (PR_GetEnv("MOZ_DEBUG_PAINTS"))
+        gdk_window_set_debug_updates(TRUE);
+
+    // 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")) {
+          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)
+{
+    return g_main_context_iteration(nullptr, mayWait);
+}