Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 237 insertions, 0 deletions

diff --git a/gfx/src/nsThebesFontEnumerator.cpp b/gfx/src/nsThebesFontEnumerator.cpp
new file mode 100644
index 0000000000..9e3b3e2989
--- /dev/null
+++ b/gfx/src/nsThebesFontEnumerator.cpp
@@ -0,0 +1,237 @@
+/* -*- Mode: C++; tab-width: 20; 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 "nsThebesFontEnumerator.h"
+#include <stdint.h>              // for uint32_t
+#include "gfxPlatform.h"         // for gfxPlatform
+#include "mozilla/Assertions.h"  // for MOZ_ASSERT_HELPER2
+#include "mozilla/UniquePtr.h"
+#include "mozilla/dom/Promise.h"  // for mozilla::dom::Promise
+#include "nsCOMPtr.h"             // for nsCOMPtr
+#include "nsDebug.h"              // for NS_ENSURE_ARG_POINTER
+#include "nsError.h"              // for NS_OK, NS_FAILED, nsresult
+#include "nsAtom.h"               // for nsAtom, NS_Atomize
+#include "nsID.h"
+#include "nsString.h"  // for nsAutoCString, nsAutoString, etc
+#include "nsTArray.h"  // for nsTArray, nsTArray_Impl, etc
+#include "nscore.h"    // for char16_t, NS_IMETHODIMP
+
+using mozilla::MakeUnique;
+using mozilla::Runnable;
+using mozilla::UniquePtr;
+
+NS_IMPL_ISUPPORTS(nsThebesFontEnumerator, nsIFontEnumerator)
+
+nsThebesFontEnumerator::nsThebesFontEnumerator() = default;
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::EnumerateAllFonts(nsTArray<nsString>& aResult) {
+  return EnumerateFonts(nullptr, nullptr, aResult);
+}
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::EnumerateFonts(const char* aLangGroup,
+                                       const char* aGeneric,
+                                       nsTArray<nsString>& aResult) {
+  nsAutoCString generic;
+  if (aGeneric)
+    generic.Assign(aGeneric);
+  else
+    generic.SetIsVoid(true);
+
+  RefPtr<nsAtom> langGroupAtom;
+  if (aLangGroup) {
+    nsAutoCString lowered;
+    lowered.Assign(aLangGroup);
+    ToLowerCase(lowered);
+    langGroupAtom = NS_Atomize(lowered);
+  }
+
+  return gfxPlatform::GetPlatform()->GetFontList(langGroupAtom, generic,
+                                                 aResult);
+}
+
+struct EnumerateFontsPromise final {
+  explicit EnumerateFontsPromise(mozilla::dom::Promise* aPromise)
+      : mPromise(aPromise) {
+    MOZ_ASSERT(aPromise);
+    MOZ_ASSERT(NS_IsMainThread());
+  }
+
+  RefPtr<mozilla::dom::Promise> mPromise;
+};
+
+class EnumerateFontsResult final : public Runnable {
+ public:
+  EnumerateFontsResult(nsresult aRv,
+                       UniquePtr<EnumerateFontsPromise> aEnumerateFontsPromise,
+                       nsTArray<nsString> aFontList)
+      : Runnable("EnumerateFontsResult"),
+        mRv(aRv),
+        mEnumerateFontsPromise(std::move(aEnumerateFontsPromise)),
+        mFontList(std::move(aFontList)),
+        mWorkerThread(do_GetCurrentThread()) {
+    MOZ_ASSERT(!NS_IsMainThread());
+  }
+
+  NS_IMETHOD Run() override {
+    MOZ_ASSERT(NS_IsMainThread());
+
+    if (NS_FAILED(mRv)) {
+      mEnumerateFontsPromise->mPromise->MaybeReject(mRv);
+    } else {
+      mEnumerateFontsPromise->mPromise->MaybeResolve(mFontList);
+    }
+
+    mWorkerThread->Shutdown();
+
+    return NS_OK;
+  }
+
+ private:
+  nsresult mRv;
+  UniquePtr<EnumerateFontsPromise> mEnumerateFontsPromise;
+  nsTArray<nsString> mFontList;
+  nsCOMPtr<nsIThread> mWorkerThread;
+};
+
+class EnumerateFontsTask final : public Runnable {
+ public:
+  EnumerateFontsTask(nsAtom* aLangGroupAtom, const nsAutoCString& aGeneric,
+                     UniquePtr<EnumerateFontsPromise> aEnumerateFontsPromise,
+                     nsIEventTarget* aMainThreadTarget)
+      : Runnable("EnumerateFontsTask"),
+        mLangGroupAtom(aLangGroupAtom),
+        mGeneric(aGeneric),
+        mEnumerateFontsPromise(std::move(aEnumerateFontsPromise)),
+        mMainThreadTarget(aMainThreadTarget) {
+    MOZ_ASSERT(NS_IsMainThread());
+  }
+
+  NS_IMETHOD Run() override {
+    MOZ_ASSERT(!NS_IsMainThread());
+
+    nsTArray<nsString> fontList;
+
+    nsresult rv = gfxPlatform::GetPlatform()->GetFontList(mLangGroupAtom,
+                                                          mGeneric, fontList);
+    nsCOMPtr<nsIRunnable> runnable = new EnumerateFontsResult(
+        rv, std::move(mEnumerateFontsPromise), std::move(fontList));
+    mMainThreadTarget->Dispatch(runnable.forget());
+
+    return NS_OK;
+  }
+
+ private:
+  RefPtr<nsAtom> mLangGroupAtom;
+  nsAutoCStringN<16> mGeneric;
+  UniquePtr<EnumerateFontsPromise> mEnumerateFontsPromise;
+  RefPtr<nsIEventTarget> mMainThreadTarget;
+};
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::EnumerateAllFontsAsync(
+    JSContext* aCx, JS::MutableHandle<JS::Value> aRval) {
+  return EnumerateFontsAsync(nullptr, nullptr, aCx, aRval);
+}
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::EnumerateFontsAsync(
+    const char* aLangGroup, const char* aGeneric, JSContext* aCx,
+    JS::MutableHandle<JS::Value> aRval) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsCOMPtr<nsIGlobalObject> global = xpc::CurrentNativeGlobal(aCx);
+  NS_ENSURE_TRUE(global, NS_ERROR_UNEXPECTED);
+
+  mozilla::ErrorResult errv;
+  RefPtr<mozilla::dom::Promise> promise =
+      mozilla::dom::Promise::Create(global, errv);
+  if (errv.Failed()) {
+    return errv.StealNSResult();
+  }
+
+  auto enumerateFontsPromise = MakeUnique<EnumerateFontsPromise>(promise);
+
+  nsCOMPtr<nsIThread> thread;
+  nsresult rv = NS_NewNamedThread("FontEnumThread", getter_AddRefs(thread));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  RefPtr<nsAtom> langGroupAtom;
+  if (aLangGroup) {
+    nsAutoCStringN<16> lowered;
+    lowered.Assign(aLangGroup);
+    ToLowerCase(lowered);
+    langGroupAtom = NS_Atomize(lowered);
+  }
+
+  nsAutoCString generic;
+  if (aGeneric) {
+    generic.Assign(aGeneric);
+  } else {
+    generic.SetIsVoid(true);
+  }
+
+  nsCOMPtr<nsIEventTarget> target =
+      global->EventTargetFor(mozilla::TaskCategory::Other);
+  nsCOMPtr<nsIRunnable> runnable = new EnumerateFontsTask(
+      langGroupAtom, generic, std::move(enumerateFontsPromise), target);
+  thread->Dispatch(runnable.forget(), NS_DISPATCH_NORMAL);
+
+  if (!ToJSValue(aCx, promise, aRval)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::HaveFontFor(const char* aLangGroup, bool* aResult) {
+  NS_ENSURE_ARG_POINTER(aResult);
+
+  *aResult = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::GetDefaultFont(const char* aLangGroup,
+                                       const char* aGeneric,
+                                       char16_t** aResult) {
+  if (NS_WARN_IF(!aResult) || NS_WARN_IF(!aLangGroup) ||
+      NS_WARN_IF(!aGeneric)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  *aResult = nullptr;
+  nsAutoCString defaultFontName(gfxPlatform::GetPlatform()->GetDefaultFontName(
+      nsDependentCString(aLangGroup), nsDependentCString(aGeneric)));
+  if (!defaultFontName.IsEmpty()) {
+    *aResult = UTF8ToNewUnicode(defaultFontName);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsThebesFontEnumerator::GetStandardFamilyName(const char16_t* aName,
+                                              char16_t** aResult) {
+  NS_ENSURE_ARG_POINTER(aResult);
+  NS_ENSURE_ARG_POINTER(aName);
+
+  nsAutoString name(aName);
+  if (name.IsEmpty()) {
+    *aResult = nullptr;
+    return NS_OK;
+  }
+
+  nsAutoCString family;
+  gfxPlatform::GetPlatform()->GetStandardFamilyName(
+      NS_ConvertUTF16toUTF8(aName), family);
+  if (family.IsEmpty()) {
+    *aResult = nullptr;
+    return NS_OK;
+  }
+  *aResult = UTF8ToNewUnicode(family);
+  return NS_OK;
+}