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// Copyright (c) 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/common/content_switches_internal.h"
#include <string>
#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "build/build_config.h"
#include "content/public/common/content_switches.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#include "ui/gfx/win/direct_write.h"
#endif
namespace content {
namespace {
#if defined(OS_WIN)
static bool g_win32k_renderer_lockdown_disabled = false;
#endif
} // namespace
bool IsPinchToZoomEnabled() {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
// --disable-pinch should always disable pinch
if (command_line.HasSwitch(switches::kDisablePinch))
return false;
#if defined(OS_WIN)
return base::win::GetVersion() >= base::win::VERSION_WIN8;
#elif defined(OS_CHROMEOS)
return true;
#else
return command_line.HasSwitch(switches::kEnableViewport) ||
command_line.HasSwitch(switches::kEnablePinch);
#endif
}
#if defined(OS_WIN)
void DisableWin32kRendererLockdown() {
g_win32k_renderer_lockdown_disabled = true;
}
bool IsWin32kRendererLockdownEnabled() {
if (g_win32k_renderer_lockdown_disabled)
return false;
if (base::win::GetVersion() < base::win::VERSION_WIN8)
return false;
if (!gfx::win::ShouldUseDirectWrite())
return false;
const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
if (cmd_line->HasSwitch(switches::kDisableWin32kRendererLockDown))
return false;
return true;
}
#endif
V8CacheOptions GetV8CacheOptions() {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string v8_cache_options =
command_line.GetSwitchValueASCII(switches::kV8CacheOptions);
if (v8_cache_options.empty())
v8_cache_options = base::FieldTrialList::FindFullName("V8CacheOptions");
if (v8_cache_options == "none") {
return V8_CACHE_OPTIONS_NONE;
} else if (v8_cache_options == "parse") {
return V8_CACHE_OPTIONS_PARSE;
} else if (v8_cache_options == "code") {
return V8_CACHE_OPTIONS_CODE;
} else {
return V8_CACHE_OPTIONS_DEFAULT;
}
}
bool IsUseZoomForDSFEnabled() {
static bool enabled = base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableUseZoomForDSF);
return enabled;
}
} // namespace content
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