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-rw-r--r--widget/gtk/ScreenHelperGTK.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/widget/gtk/ScreenHelperGTK.h b/widget/gtk/ScreenHelperGTK.h
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+++ b/widget/gtk/ScreenHelperGTK.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=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/. */
+
+#ifndef mozilla_widget_gtk_ScreenHelperGTK_h
+#define mozilla_widget_gtk_ScreenHelperGTK_h
+
+#include "mozilla/widget/ScreenManager.h"
+
+#include "gdk/gdk.h"
+#ifdef MOZ_X11
+# include <X11/Xlib.h>
+# include "X11UndefineNone.h"
+#endif
+
+class nsWindow;
+struct wl_registry;
+
+namespace mozilla {
+namespace widget {
+
+class ScreenGetter {
+ public:
+ ScreenGetter() = default;
+ virtual ~ScreenGetter(){};
+
+ virtual void Init(){};
+
+ virtual void RefreshScreens(){};
+ virtual RefPtr<widget::Screen> GetScreenForWindow(nsWindow* aWindow) {
+ return nullptr;
+ }
+};
+
+class ScreenGetterGtk : public ScreenGetter {
+ public:
+ ScreenGetterGtk();
+ ~ScreenGetterGtk();
+
+ void Init();
+
+#ifdef MOZ_X11
+ Atom NetWorkareaAtom() { return mNetWorkareaAtom; }
+#endif
+
+ // For internal use from signal callback functions
+ void RefreshScreens();
+
+ private:
+ GdkWindow* mRootWindow;
+#ifdef MOZ_X11
+ Atom mNetWorkareaAtom;
+#endif
+};
+
+class ScreenGetterWayland;
+struct MonitorConfig;
+
+#ifdef MOZ_WAYLAND
+class ScreenGetterWayland : public ScreenGetter {
+ public:
+ ScreenGetterWayland();
+ ~ScreenGetterWayland();
+
+ void Init();
+
+ MonitorConfig* AddMonitorConfig(int aId);
+ bool RemoveMonitorConfig(int aId);
+ already_AddRefed<Screen> MakeScreenWayland(gint aMonitor);
+
+ RefPtr<widget::Screen> GetScreenForWindow(nsWindow* aWindow);
+
+ // For internal use from signal callback functions
+ void RefreshScreens();
+
+ private:
+ int GetMonitorForWindow(nsWindow* aWindow);
+ bool MonitorUsesNonIntegerScale(int aMonitor);
+
+ private:
+ wl_registry* mRegistry = nullptr;
+ // We use UniquePtr<> here to ensure that MonitorConfig is heap-allocated
+ // so it's not invalidated by any change to mMonitors that could happen in the
+ // meantime.
+ AutoTArray<UniquePtr<MonitorConfig>, 4> mMonitors;
+ AutoTArray<RefPtr<Screen>, 4> mScreenList;
+};
+#endif
+
+class ScreenHelperGTK final : public ScreenManager::Helper {
+ public:
+ ScreenHelperGTK();
+ ~ScreenHelperGTK();
+
+ static gint GetGTKMonitorScaleFactor(gint aMonitorNum = 0);
+ static RefPtr<widget::Screen> GetScreenForWindow(nsWindow* aWindow);
+};
+
+} // namespace widget
+} // namespace mozilla
+
+#endif // mozilla_widget_gtk_ScreenHelperGTK_h