| // 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() { |
| base::CommandLine* command_line = base::CommandLine::ForCurrentProcess(); |
| bool enabled = command_line->HasSwitch(switches::kEnableUseZoomForDSF) && |
| command_line->GetSwitchValueASCII( |
| switches::kEnableUseZoomForDSF) != "false"; |
| |
| return enabled; |
| } |
| |
| } // namespace content |