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// Copyright (c) 2012 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 "chrome/browser/chromeos/system/input_device_settings.h"
#include <stdarg.h>
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/chromeos/chromeos_version.h"
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/message_loop.h"
#include "base/process_util.h"
#include "base/stringprintf.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace chromeos {
namespace system {
namespace {
const char kTpControl[] = "/opt/google/touchpad/tpcontrol";
const char kMouseControl[] = "/opt/google/mouse/mousecontrol";
bool ScriptExists(const std::string& script) {
return file_util::PathExists(FilePath(script));
}
// Executes the input control script asynchronously, if it exists.
void ExecuteScriptOnFileThread(const std::vector<std::string>& argv) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
DCHECK(!argv.empty());
const std::string& script(argv[0]);
// Script must exist on device.
DCHECK(!base::chromeos::IsRunningOnChromeOS() || ScriptExists(script));
if (!ScriptExists(script))
return;
base::LaunchOptions options;
options.wait = true;
base::LaunchProcess(CommandLine(argv), options, NULL);
}
void ExecuteScript(int argc, ...) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
std::vector<std::string> argv;
va_list vl;
va_start(vl, argc);
for (int i = 0; i < argc; ++i) {
argv.push_back(va_arg(vl, const char*));
}
va_end(vl);
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&ExecuteScriptOnFileThread, argv));
}
void SetPointerSensitivity(const char* script, int value) {
DCHECK(value > 0 && value < 6);
ExecuteScript(3, script, "sensitivity", StringPrintf("%d", value).c_str());
}
bool DeviceExists(const char* script) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
if (!ScriptExists(script))
return false;
std::vector<std::string> argv;
argv.push_back(script);
argv.push_back("status");
std::string output;
// Output is empty if the device is not found.
return base::GetAppOutput(CommandLine(argv), &output) && !output.empty();
}
} // namespace
namespace touchpad_settings {
bool TouchpadExists() {
// We only need to do this check once, assuming no pluggable touchpad devices.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
static bool init = false;
static bool exists = false;
if (!init) {
init = true;
exists = DeviceExists(kTpControl);
}
return exists;
}
// Sets the touchpad sensitivity in the range [1, 5].
void SetSensitivity(int value) {
SetPointerSensitivity(kTpControl, value);
}
void SetTapToClick(bool enabled) {
ExecuteScript(3, kTpControl, "taptoclick", enabled ? "on" : "off");
}
void SetThreeFingerClick(bool enabled) {
ExecuteScript(3, kTpControl, "three_finger_click", enabled ? "on" : "off");
// For Alex/ZGB.
ExecuteScript(3, kTpControl, "t5r2_three_finger_click",
enabled ? "on" : "off");
}
} // namespace touchpad_settings
namespace mouse_settings {
bool MouseExists() {
return DeviceExists(kMouseControl);
}
// Sets the touchpad sensitivity in the range [1, 5].
void SetSensitivity(int value) {
SetPointerSensitivity(kMouseControl, value);
}
void SetPrimaryButtonRight(bool right) {
ExecuteScript(3, kMouseControl, "swap_left_right", right ? "1" : "0");
}
} // namespace mouse_settings
} // namespace system
} // namespace chromeos
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