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-rw-r--r--widget/gtk/nsAppShell.cpp271
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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 18:59:54 +0000