1 files changed, 47 insertions, 0 deletions
diff --git a/widget/gtk/WindowSurfaceX11.cpp b/widget/gtk/WindowSurfaceX11.cpp
new file mode 100644
index 0000000000..36b238a98b
--- /dev/null
+++ b/widget/gtk/WindowSurfaceX11.cpp
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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 "WindowSurfaceX11.h"
+#include "gfxPlatform.h"
+
+namespace mozilla::widget {
+
+WindowSurfaceX11::WindowSurfaceX11(Display* aDisplay, Window aWindow,
+                                   Visual* aVisual, unsigned int aDepth)
+    : mDisplay(aDisplay),
+      mWindow(aWindow),
+      mVisual(aVisual),
+      mDepth(aDepth),
+      mFormat(GetVisualFormat(aVisual, aDepth)) {}
+
+/* static */
+gfx::SurfaceFormat WindowSurfaceX11::GetVisualFormat(const Visual* aVisual,
+                                                     unsigned int aDepth) {
+  switch (aDepth) {
+    case 32:
+      if (aVisual->red_mask == 0xff0000 && aVisual->green_mask == 0xff00 &&
+          aVisual->blue_mask == 0xff) {
+        return gfx::SurfaceFormat::B8G8R8A8;
+      }
+      break;
+    case 24:
+      if (aVisual->red_mask == 0xff0000 && aVisual->green_mask == 0xff00 &&
+          aVisual->blue_mask == 0xff) {
+        return gfx::SurfaceFormat::B8G8R8X8;
+      }
+      break;
+    case 16:
+      if (aVisual->red_mask == 0xf800 && aVisual->green_mask == 0x07e0 &&
+          aVisual->blue_mask == 0x1f) {
+        return gfx::SurfaceFormat::R5G6B5_UINT16;
+      }
+      break;
+  }
+
+  return gfx::SurfaceFormat::UNKNOWN;
+}
+
+}  // namespace mozilla::widget