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-rw-r--r--gfx/2d/ScaledFontWin.cpp121
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diff --git a/gfx/2d/ScaledFontWin.cpp b/gfx/2d/ScaledFontWin.cpp
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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/. */
+
+#include "ScaledFontWin.h"
+#include "UnscaledFontGDI.h"
+
+#include "AutoHelpersWin.h"
+#include "Logging.h"
+#include "nsString.h"
+
+#include "skia/include/ports/SkTypeface_win.h"
+
+#include "cairo-win32.h"
+
+#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();
+}
+
+SkTypeface* ScaledFontWin::CreateSkTypeface() {
+ return SkCreateTypefaceFromLOGFONT(mLogFont);
+}
+
+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);
+}
+
+} // namespace gfx
+} // namespace mozilla