1 files changed, 129 insertions, 0 deletions
diff --git a/gfx/2d/ScaledFontWin.cpp b/gfx/2d/ScaledFontWin.cpp
new file mode 100644
index 0000000000..a35f9ddbff
--- /dev/null
+++ b/gfx/2d/ScaledFontWin.cpp
@@ -0,0 +1,129 @@
+/* -*- 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 "ScaledFontWin.h"
+#include "UnscaledFontGDI.h"
+
+#include "AutoHelpersWin.h"
+#include "Logging.h"
+#include "nsString.h"
+
+#ifdef USE_SKIA
+#  include "skia/include/ports/SkTypeface_win.h"
+#endif
+
+#ifdef USE_CAIRO_SCALED_FONT
+#  include "cairo-win32.h"
+#endif
+
+#include "HelpersWinFonts.h"
+
+namespace mozilla {
+namespace gfx {
+
+ScaledFontWin::ScaledFontWin(const LOGFONT* aFont,
+                             const RefPtr<UnscaledFont>& aUnscaledFont,
+                             Float aSize)
+    : ScaledFontBase(aUnscaledFont, aSize), mLogFont(*aFont) {}
+
+bool UnscaledFontGDI::GetFontFileData(FontFileDataOutput aDataCallback,
+                                      void* aBaton) {
+  AutoDC dc;
+  AutoSelectFont font(dc.GetDC(), &mLogFont);
+
+  // Check for a font collection first.
+  uint32_t table = 0x66637474;  // 'ttcf'
+  uint32_t tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
+  if (tableSize == GDI_ERROR) {
+    // Try as if just a single font.
+    table = 0;
+    tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
+    if (tableSize == GDI_ERROR) {
+      return false;
+    }
+  }
+
+  UniquePtr<uint8_t[]> fontData(new uint8_t[tableSize]);
+
+  uint32_t sizeGot =
+      ::GetFontData(dc.GetDC(), table, 0, fontData.get(), tableSize);
+  if (sizeGot != tableSize) {
+    return false;
+  }
+
+  aDataCallback(fontData.get(), tableSize, 0, aBaton);
+  return true;
+}
+
+bool ScaledFontWin::GetFontInstanceData(FontInstanceDataOutput aCb,
+                                        void* aBaton) {
+  aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), nullptr, 0,
+      aBaton);
+  return true;
+}
+
+bool UnscaledFontGDI::GetFontInstanceData(FontInstanceDataOutput aCb,
+                                          void* aBaton) {
+  aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), aBaton);
+  return true;
+}
+
+bool UnscaledFontGDI::GetFontDescriptor(FontDescriptorOutput aCb,
+                                        void* aBaton) {
+  // Because all the callers of this function are preparing a recorded
+  // event to be played back in another process, it's not helpful to ever
+  // return a font descriptor, since it isn't meaningful in another
+  // process. Those callers will always need to send full font data, and
+  // returning false here will ensure that that happens.
+  return false;
+}
+
+already_AddRefed<UnscaledFont> UnscaledFontGDI::CreateFromFontDescriptor(
+    const uint8_t* aData, uint32_t aDataLength, uint32_t aIndex) {
+  if (aDataLength < sizeof(LOGFONT)) {
+    gfxWarning() << "GDI font descriptor is truncated.";
+    return nullptr;
+  }
+
+  const LOGFONT* logFont = reinterpret_cast<const LOGFONT*>(aData);
+  RefPtr<UnscaledFont> unscaledFont = new UnscaledFontGDI(*logFont);
+  return unscaledFont.forget();
+}
+
+already_AddRefed<ScaledFont> UnscaledFontGDI::CreateScaledFont(
+    Float aGlyphSize, const uint8_t* aInstanceData,
+    uint32_t aInstanceDataLength, const FontVariation* aVariations,
+    uint32_t aNumVariations) {
+  if (aInstanceDataLength < sizeof(LOGFONT)) {
+    gfxWarning() << "GDI unscaled font instance data is truncated.";
+    return nullptr;
+  }
+  return MakeAndAddRef<ScaledFontWin>(
+      reinterpret_cast<const LOGFONT*>(aInstanceData), this, aGlyphSize);
+}
+
+AntialiasMode ScaledFontWin::GetDefaultAAMode() {
+  return GetSystemDefaultAAMode();
+}
+
+#ifdef USE_SKIA
+SkTypeface* ScaledFontWin::CreateSkTypeface() {
+  return SkCreateTypefaceFromLOGFONT(mLogFont);
+}
+#endif
+
+#ifdef USE_CAIRO_SCALED_FONT
+cairo_font_face_t* ScaledFontWin::CreateCairoFontFace(
+    cairo_font_options_t* aFontOptions) {
+  if (mLogFont.lfFaceName[0] == 0) {
+    return nullptr;
+  }
+  return cairo_win32_font_face_create_for_logfontw(&mLogFont);
+}
+#endif
+
+}  // namespace gfx
+}  // namespace mozilla