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Bug 1186661 - Use monitors-changed signal to update screen manager on GTK. r=karlt

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This commit is contained in:
Andrew Comminos 2015-07-25 19:07:00 -04:00
parent c320ba30b4
commit 51fd957d75
1 changed files with 15 additions and 6 deletions
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21
widget/gtk/nsScreenManagerGtk.cpp
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@ -8,6 +8,7 @@
#include "nsIComponentManager.h"
#include "nsRect.h"
#include "nsAutoPtr.h"
#include "nsGtkUtils.h"
#define SCREEN_MANAGER_LIBRARY_LOAD_FAILED ((PRLibrary*)1)
@ -20,6 +21,12 @@ typedef XineramaScreenInfo* (*_XnrmQueryScreens_fn)(Display *dpy, int *number);
#include <gtk/gtk.h>
void
monitors_changed(GdkScreen* aScreen, gpointer aClosure)
{
nsScreenManagerGtk *manager = static_cast<nsScreenManagerGtk*>(aClosure);
manager->Init();
}
static GdkFilterReturn
root_window_event_filter(GdkXEvent *aGdkXEvent, GdkEvent *aGdkEvent,
@ -31,9 +38,6 @@ root_window_event_filter(GdkXEvent *aGdkXEvent, GdkEvent *aGdkEvent,
// See comments in nsScreenGtk::Init below.
switch (xevent->type) {
case ConfigureNotify:
manager->Init();
break;
case PropertyNotify:
{
XPropertyEvent *propertyEvent = &xevent->xproperty;
@ -63,6 +67,10 @@ nsScreenManagerGtk :: nsScreenManagerGtk ( )
nsScreenManagerGtk :: ~nsScreenManagerGtk()
{
g_signal_handlers_disconnect_by_func(gdk_screen_get_default(),
FuncToGpointer(monitors_changed),
this);
if (mRootWindow) {
gdk_window_remove_filter(mRootWindow, root_window_event_filter, this);
g_object_unref(mRootWindow);
@ -93,14 +101,15 @@ nsScreenManagerGtk :: EnsureInit()
mRootWindow = gdk_get_default_root_window();
g_object_ref(mRootWindow);
// GDK_STRUCTURE_MASK ==> StructureNotifyMask, for ConfigureNotify
// GDK_PROPERTY_CHANGE_MASK ==> PropertyChangeMask, for PropertyNotify
gdk_window_set_events(mRootWindow,
GdkEventMask(gdk_window_get_events(mRootWindow) |
GDK_STRUCTURE_MASK |
GDK_PROPERTY_CHANGE_MASK));
gdk_window_add_filter(mRootWindow, root_window_event_filter, this);
g_signal_connect(gdk_screen_get_default(), "monitors-changed",
G_CALLBACK(monitors_changed), this);
#ifdef MOZ_X11
gdk_window_add_filter(mRootWindow, root_window_event_filter, this);
if (GDK_IS_X11_DISPLAY(gdk_display_get_default()))
mNetWorkareaAtom =
XInternAtom(GDK_WINDOW_XDISPLAY(mRootWindow), "_NET_WORKAREA", False);