123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/*
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* A platform API implementation
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* Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
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*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* @file: nana/system/platform.cpp
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* @description:
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* this implements some API for platform-independent programming
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* @contributors:
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* Benjamin Navarro(pr#81)
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*/
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#include <nana/deploy.hpp>
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#if defined(NANA_WINDOWS)
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#include <windows.h>
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#include "../detail/mswin/platform_spec.hpp"
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#elif defined(NANA_LINUX) || defined(NANA_MACOS)
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#include <time.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/syscall.h>
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#endif
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namespace nana
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{
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namespace system
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{
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//sleep
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//@brief: Suspend current thread for a specified milliseconds.
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// its precision is depended on hardware.
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void sleep(unsigned milliseconds)
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{
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#if defined(NANA_WINDOWS)
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::Sleep(milliseconds);
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#elif defined(NANA_LINUX) || defined(NANA_MACOS)
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struct timespec timeOut, remains;
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timeOut.tv_sec = milliseconds / 1000;
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timeOut.tv_nsec = (milliseconds % 1000) * 1000000;
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while(-1 == ::nanosleep(&timeOut, &remains))
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{
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if(errno == EINTR)
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timeOut = remains;
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else
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break;
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}
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#endif
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}
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//this_thread_id
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//@brief: get the identifier of calling thread.
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unsigned long this_thread_id()
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{
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#if defined(NANA_WINDOWS)
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return ::GetCurrentThreadId();
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#elif defined(NANA_LINUX)
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return ::syscall(__NR_gettid);
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#elif defined(NANA_MACOS)
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return ::syscall(SYS_thread_selfid);
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#endif
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}
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unsigned long timestamp()
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{
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#if defined(NANA_WINDOWS)
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return ::GetTickCount();
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#elif defined(NANA_LINUX) || defined(NANA_MACOS)
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struct timeval tv;
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::gettimeofday(&tv, 0);
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return (tv.tv_sec * 1000 + tv.tv_usec / 1000);
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#endif
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}
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bool get_async_mouse_state(int button)
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{
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#if defined(NANA_WINDOWS)
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bool swap = (::GetSystemMetrics(SM_SWAPBUTTON) != 0);
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switch(button)
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{
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case 1: //Right
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button = swap ? VK_LBUTTON : VK_RBUTTON;
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break;
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case 2:
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button = VK_MBUTTON;
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break;
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default:
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button = swap ? VK_RBUTTON : VK_LBUTTON;
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break;
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}
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return (::GetAsyncKeyState(button) != 0);
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#elif defined(NANA_LINUX) || defined(NANA_MACOS)
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static_cast<void>(button); //eliminate unused parameter compiler warning.
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return false;
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#endif
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}
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//open an url through a default browser
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void open_url(const std::string& url_utf8)
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{
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if(url_utf8.empty())
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return;
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#if defined(NANA_WINDOWS)
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std::wstring url = to_wstring(url_utf8);
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if(::ShellExecute(0, L"open", url.c_str(), 0, 0, SW_SHOWNORMAL) < reinterpret_cast<HINSTANCE>(32))
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{
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//Because ShellExecute can delegate execution to Shell extensions (data sources, context menu handlers,
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//verb implementations) that are activated using Component Object Model (COM), COM should be initialized
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//before ShellExecute is called. Some Shell extensions require the COM single-threaded apartment (STA) type.
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//In that case, COM should be initialized under WinXP.
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nana::detail::platform_spec::co_initializer co_init;
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::ShellExecute(0, L"open", url.c_str(), 0, 0, SW_SHOWNORMAL);
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}
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#elif defined(NANA_LINUX) || defined(NANA_MACOS)
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#endif
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}
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}//end namespace system
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}//end namespace nana
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