openethereum/windows/ptray/ptray.cpp

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// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
#define WIN32_LEAN_AND_MEAN
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <Windows.h>
#include <Shellapi.h>
#include <Shlwapi.h>
#include <tlhelp32.h>
#include <SDKDDKVer.h>
#include "resource.h"
#pragma comment(lib, "shlwapi.lib")
#define MAX_LOADSTRING 100
#define IDM_EXIT 100
#define IDM_OPEN 101
#define WM_USER_SHELLICON WM_USER + 1
HANDLE parityHandle = INVALID_HANDLE_VALUE;
DWORD parityProcId = 0;
NOTIFYICONDATA nidApp;
WCHAR szTitle[MAX_LOADSTRING];
WCHAR szWindowClass[MAX_LOADSTRING];
LPCWSTR cParityExe = _T("parity.exe");
ATOM MyRegisterClass(HINSTANCE hInstance);
bool InitInstance(HINSTANCE, int, LPWSTR cmdLine);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
void KillParity();
void OpenUI();
bool ParityIsRunning();
bool GetParityExePath(TCHAR* dest, size_t destSize)
{
if (!dest || MAX_PATH > destSize)
return false;
GetModuleFileName(NULL, dest, destSize);
if (!PathRemoveFileSpec(dest))
return false;
return PathAppend(dest, _T("parity.exe")) == TRUE;
}
int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPWSTR lpCmdLine,
_In_ int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
CreateMutex(0, FALSE, _T("Local\\ParityTray"));
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if (GetLastError() == ERROR_ALREADY_EXISTS) {
// open the UI
OpenUI();
return 0;
}
LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadStringW(hInstance, IDC_PTRAY, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
if (!InitInstance(hInstance, nCmdShow, lpCmdLine))
return FALSE;
HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_PTRAY));
MSG msg;
// Main message loop:
while (GetMessage(&msg, nullptr, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int)msg.wParam;
}
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEXW wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_PTRAY));
wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = MAKEINTRESOURCEW(IDC_PTRAY);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassExW(&wcex);
}
bool InitInstance(HINSTANCE hInstance, int nCmdShow, LPWSTR cmdLine)
{
// Check if already running
PROCESSENTRY32 entry;
entry.dwSize = sizeof(PROCESSENTRY32);
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
if (Process32First(snapshot, &entry) == TRUE)
{
while (Process32Next(snapshot, &entry) == TRUE)
{
if (lstrcmp(entry.szExeFile, cParityExe) == 0)
{
parityHandle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, entry.th32ProcessID);
parityProcId = entry.th32ProcessID;
break;
}
}
}
CloseHandle(snapshot);
if (parityHandle == INVALID_HANDLE_VALUE)
{
// Launch parity
TCHAR path[MAX_PATH] = { 0 };
if (!GetParityExePath(path, MAX_PATH))
return false;
PROCESS_INFORMATION procInfo = { 0 };
STARTUPINFO startupInfo = { sizeof(STARTUPINFO) };
LPWSTR cmd = new WCHAR[lstrlen(cmdLine) + lstrlen(path) + 2];
lstrcpy(cmd, path);
lstrcat(cmd, _T(" "));
lstrcat(cmd, cmdLine);
if (!CreateProcess(nullptr, cmd, nullptr, nullptr, false, CREATE_NO_WINDOW, nullptr, nullptr, &startupInfo, &procInfo))
return false;
delete[] cmd;
parityHandle = procInfo.hProcess;
parityProcId = procInfo.dwProcessId;
}
HWND hWnd = CreateWindowW(szWindowClass, szTitle, 0,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);
if (!hWnd)
return false;
HICON hMainIcon = LoadIcon(hInstance, (LPCTSTR)MAKEINTRESOURCE(IDI_PTRAY));
nidApp.cbSize = sizeof(NOTIFYICONDATA); // sizeof the struct in bytes
nidApp.hWnd = (HWND)hWnd; //handle of the window which will process this app. messages
nidApp.uID = IDI_PTRAY; //ID of the icon that willl appear in the system tray
nidApp.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP; //ORing of all the flags
nidApp.hIcon = hMainIcon; // handle of the Icon to be displayed, obtained from LoadIcon
nidApp.uCallbackMessage = WM_USER_SHELLICON;
LoadString(hInstance, IDS_CONTROL_PARITY, nidApp.szTip, MAX_LOADSTRING);
Shell_NotifyIcon(NIM_ADD, &nidApp);
return TRUE;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_USER_SHELLICON:
// systray msg callback
POINT lpClickPoint;
switch (LOWORD(lParam))
{
case WM_LBUTTONDOWN:
OpenUI();
break;
case WM_RBUTTONDOWN:
UINT uFlag = MF_BYPOSITION | MF_STRING;
GetCursorPos(&lpClickPoint);
HMENU hPopMenu = CreatePopupMenu();
InsertMenu(hPopMenu, 0xFFFFFFFF, MF_BYPOSITION | MF_STRING, IDM_EXIT, _T("Open"));
InsertMenu(hPopMenu, 0xFFFFFFFF, MF_SEPARATOR | MF_BYPOSITION, 0, nullptr);
InsertMenu(hPopMenu, 0xFFFFFFFF, MF_BYPOSITION | MF_STRING, IDM_EXIT, _T("Exit"));
SetForegroundWindow(hWnd);
TrackPopupMenu(hPopMenu, TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_BOTTOMALIGN, lpClickPoint.x, lpClickPoint.y, 0, hWnd, NULL);
return TRUE;
}
break;
case WM_COMMAND:
{
int wmId = LOWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_EXIT:
DestroyWindow(hWnd);
break;
case IDM_OPEN:
OpenUI();
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
}
break;
case WM_DESTROY:
Shell_NotifyIcon(NIM_DELETE, &nidApp);
KillParity();
PostQuitMessage(0);
break;
case WM_TIMER:
if (!ParityIsRunning())
DestroyWindow(hWnd);
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
void KillParity()
{
DWORD procId = parityProcId;
//This does not require the console window to be visible.
if (AttachConsole(procId))
{
// Disable Ctrl-C handling for our program
SetConsoleCtrlHandler(nullptr, true);
GenerateConsoleCtrlEvent(CTRL_C_EVENT, 0);
FreeConsole();
//Re-enable Ctrl-C handling or any subsequently started
//programs will inherit the disabled state.
SetConsoleCtrlHandler(nullptr, false);
}
WaitForSingleObject(parityHandle, INFINITE);
}
bool ParityIsRunning()
{
return WaitForSingleObject(parityHandle, 0) == WAIT_TIMEOUT;
}
void OpenUI()
{
// Launch parity
TCHAR path[MAX_PATH] = { 0 };
if (!GetParityExePath(path, MAX_PATH))
return;
PROCESS_INFORMATION procInfo = { 0 };
STARTUPINFO startupInfo = { sizeof(STARTUPINFO) };
LPWSTR cmd = _T("parity.exe ui");
CreateProcess(path, cmd, nullptr, nullptr, false, CREATE_NO_WINDOW, nullptr, nullptr, &startupInfo, &procInfo);
}