Add m-esr52 at 52.6.0

1 files changed, 83 insertions, 0 deletions

diff --git a/layout/inspector/nsFontFaceList.cpp b/layout/inspector/nsFontFaceList.cpp
new file mode 100644
index 000000000..5f9b0ecb4
--- /dev/null
+++ b/layout/inspector/nsFontFaceList.cpp
@@ -0,0 +1,83 @@
+/* -*- 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/. */
+
+#include "nsFontFaceList.h"
+#include "nsFontFace.h"
+#include "nsFontFaceLoader.h"
+#include "nsIFrame.h"
+#include "gfxTextRun.h"
+#include "mozilla/gfx/2D.h"
+
+nsFontFaceList::nsFontFaceList()
+{
+}
+
+nsFontFaceList::~nsFontFaceList()
+{
+}
+
+////////////////////////////////////////////////////////////////////////
+// nsISupports
+
+NS_IMPL_ISUPPORTS(nsFontFaceList, nsIDOMFontFaceList)
+
+////////////////////////////////////////////////////////////////////////
+// nsIDOMFontFaceList
+
+NS_IMETHODIMP
+nsFontFaceList::Item(uint32_t index, nsIDOMFontFace **_retval)
+{
+  NS_ENSURE_TRUE(index < mFontFaces.Count(), NS_ERROR_INVALID_ARG);
+
+  uint32_t current = 0;
+  nsIDOMFontFace* result = nullptr;
+  for (auto iter = mFontFaces.Iter(); !iter.Done(); iter.Next()) {
+    if (current == index) {
+      result = iter.UserData();
+      break;
+    }
+    current++;
+  }
+  NS_ASSERTION(result != nullptr, "null entry in nsFontFaceList?");
+  NS_IF_ADDREF(*_retval = result);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsFontFaceList::GetLength(uint32_t *aLength)
+{
+  *aLength = mFontFaces.Count();
+  return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////
+// nsFontFaceList
+
+nsresult
+nsFontFaceList::AddFontsFromTextRun(gfxTextRun* aTextRun,
+                                    uint32_t aOffset, uint32_t aLength)
+{
+  gfxTextRun::Range range(aOffset, aOffset + aLength);
+  gfxTextRun::GlyphRunIterator iter(aTextRun, range);
+  while (iter.NextRun()) {
+    gfxFontEntry *fe = iter.GetGlyphRun()->mFont->GetFontEntry();
+    // if we have already listed this face, just make sure the match type is
+    // recorded
+    nsFontFace* existingFace =
+      static_cast<nsFontFace*>(mFontFaces.GetWeak(fe));
+    if (existingFace) {
+      existingFace->AddMatchType(iter.GetGlyphRun()->mMatchType);
+    } else {
+      // A new font entry we haven't seen before
+      RefPtr<nsFontFace> ff =
+        new nsFontFace(fe, aTextRun->GetFontGroup(),
+                       iter.GetGlyphRun()->mMatchType);
+      mFontFaces.Put(fe, ff);
+    }
+  }
+
+  return NS_OK;
+}