content/renderer/renderer_main_platform_delegate_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/renderer_main_platform_delegate.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/strings/string16.h"
  11 #include "base/win/scoped_comptr.h"
  12 #include "base/win/win_util.h"
  13 #include "base/win/windows_version.h"
  14 #include "content/public/common/content_switches.h"
  15 #include "content/public/common/injection_test_win.h"
  16 #include "content/public/renderer/render_font_warmup_win.h"
  17 #include "content/public/renderer/render_thread.h"
  18 #include "content/renderer/render_thread_impl.h"
  19 #include "sandbox/win/src/sandbox.h"
  20 #include "skia/ext/fontmgr_default_win.h"
  21 #include "skia/ext/vector_platform_device_emf_win.h"
  22 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  23 #include "third_party/WebKit/public/web/win/WebFontRendering.h"
  24 #include "third_party/icu/source/i18n/unicode/timezone.h"
  25 #include "third_party/skia/include/ports/SkFontMgr.h"
  26 #include "third_party/skia/include/ports/SkTypeface_win.h"
  27 #include "ui/gfx/win/direct_write.h"
  28 #include "ui/gfx/win/dpi.h"
  29
  30 #ifdef ENABLE_VTUNE_JIT_INTERFACE
  31 #include "v8/src/third_party/vtune/v8-vtune.h"
  32 #endif
  33
  34 #include <dwrite.h>
  35
  36 namespace content {
  37 namespace {
  38
  39 // Windows-only skia sandbox support
  40 // These are used for GDI-path rendering.
  41 void SkiaPreCacheFont(const LOGFONT& logfont) {
  42   RenderThread* render_thread = RenderThread::Get();
  43   if (render_thread) {
  44     render_thread->PreCacheFont(logfont);
  45   }
  46 }
  47
  48 void SkiaPreCacheFontCharacters(const LOGFONT& logfont,
  49                                 const wchar_t* text,
  50                                 unsigned int text_length) {
  51   RenderThreadImpl* render_thread_impl = RenderThreadImpl::current();
  52   if (render_thread_impl) {
  53     render_thread_impl->PreCacheFontCharacters(
  54         logfont,
  55         base::string16(text, text_length));
  56   }
  57 }
  58
  59 void WarmupDirectWrite() {
  60   // The objects used here are intentionally not freed as we want the Skia
  61   // code to use these objects after warmup.
  62   SkTypeface* typeface =
  63       GetPreSandboxWarmupFontMgr()->legacyCreateTypeface("Times New Roman", 0);
  64   DoPreSandboxWarmupForTypeface(typeface);
  65   SetDefaultSkiaFactory(GetPreSandboxWarmupFontMgr());
  66 }
  67
  68 }  // namespace
  69
  70 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
  71     const MainFunctionParams& parameters)
  72         : parameters_(parameters),
  73           sandbox_test_module_(NULL) {
  74 }
  75
  76 RendererMainPlatformDelegate::~RendererMainPlatformDelegate() {
  77 }
  78
  79 void RendererMainPlatformDelegate::PlatformInitialize() {
  80   const CommandLine& command_line = parameters_.command_line;
  81
  82 #ifdef ENABLE_VTUNE_JIT_INTERFACE
  83   if (command_line.HasSwitch(switches::kEnableVtune))
  84     vTune::InitializeVtuneForV8();
  85 #endif
  86
  87   // Be mindful of what resources you acquire here. They can be used by
  88   // malicious code if the renderer gets compromised.
  89   bool no_sandbox = command_line.HasSwitch(switches::kNoSandbox);
  90
  91   bool use_direct_write = gfx::win::ShouldUseDirectWrite();
  92   if (!no_sandbox) {
  93     // ICU DateFormat class (used in base/time_format.cc) needs to get the
  94     // Olson timezone ID by accessing the registry keys under
  95     // HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones.
  96     // After TimeZone::createDefault is called once here, the timezone ID is
  97     // cached and there's no more need to access the registry. If the sandbox
  98     // is disabled, we don't have to make this dummy call.
  99     scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
 100
 101     if (use_direct_write) {
 102       WarmupDirectWrite();
 103     } else {
 104       SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
 105       skia::SetSkiaEnsureTypefaceCharactersAccessible(
 106           SkiaPreCacheFontCharacters);
 107     }
 108   }
 109   blink::WebFontRendering::setUseDirectWrite(use_direct_write);
 110   blink::WebFontRendering::setDeviceScaleFactor(gfx::GetDPIScale());
 111   if (use_direct_write) {
 112     blink::WebRuntimeFeatures::enableSubpixelFontScaling(true);
 113   }
 114 }
 115
 116 void RendererMainPlatformDelegate::PlatformUninitialize() {
 117 }
 118
 119 bool RendererMainPlatformDelegate::EnableSandbox() {
 120   sandbox::TargetServices* target_services =
 121       parameters_.sandbox_info->target_services;
 122
 123   if (target_services) {
 124     // Cause advapi32 to load before the sandbox is turned on.
 125     unsigned int dummy_rand;
 126     rand_s(&dummy_rand);
 127     // Warm up language subsystems before the sandbox is turned on.
 128     ::GetUserDefaultLangID();
 129     ::GetUserDefaultLCID();
 130
 131     target_services->LowerToken();
 132     return true;
 133   }
 134   return false;
 135 }
 136
 137 }  // namespace content