tray notification for windows

client/gui/NotificationHandler.cpp

@@ -0,0 +1,159 @@
+/*
+* NotificationHandler.cpp, part of VCMI engine
+*
+* Authors: listed in file AUTHORS in main folder
+*
+* License: GNU General Public License v2.0 or later
+* Full text of license available in license.txt file, in main folder
+*
+*/
+
+#include "StdInc.h"
+#include "NotificationHandler.h"
+#include <SDL_video.h>
+#include <SDL_syswm.h>
+
+#if defined(VCMI_WINDOWS) && defined(_WIN64)
+
+#define WIN32_LEAN_AND_MEAN		// Exclude rarely-used stuff from Windows headers
+// Windows Header Files:
+#include <windows.h>
+#include <shellapi.h>
+// C RunTime Header Files
+
+#define	WM_USER_SHELLICON WM_USER + 1
+
+// Global Variables:
+
+struct NotificationState
+{
+	HINSTANCE		hInst;	// current instance
+	NOTIFYICONDATA	niData;	// notify icon data
+	bool initialized = false;
+	SDL_Window * window;
+};
+
+NotificationState state;
+
+void NotificationHandler::notify(std::string msg)
+{
+	NOTIFYICONDATA niData;
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+
+	if(!SDL_GetWindowWMInfo(state.window, &info))
+		return;
+
+	if(info.info.win.window == GetForegroundWindow())
+		return;
+
+	ZeroMemory(&niData, sizeof(NOTIFYICONDATA));
+
+	niData.cbSize = sizeof(NOTIFYICONDATA);
+	niData.hWnd = info.info.win.window;
+	niData.uID = 1;
+	niData.uFlags = NIF_INFO | NIF_MESSAGE;
+	niData.uCallbackMessage = WM_USER_SHELLICON;
+
+	niData.dwInfoFlags = NIIF_INFO;
+	msg.copy(niData.szInfo, msg.length());
+
+	Shell_NotifyIcon(NIM_MODIFY, &niData);
+}
+
+void NotificationHandler::init(SDL_Window * window)
+{
+	state.window = window;
+
+	if(state.initialized)
+		return;
+
+	SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
+
+	NOTIFYICONDATA niData;
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+
+	if(!SDL_GetWindowWMInfo(state.window, &info))
+		return;
+
+	ZeroMemory(&niData, sizeof(NOTIFYICONDATA));
+
+	state.hInst = (HINSTANCE)GetModuleHandle("VCMI_client.exe");
+
+	niData.cbSize = sizeof(NOTIFYICONDATA);
+	niData.hWnd = info.info.win.window;
+	niData.uID = 1;
+	niData.uFlags = NIF_ICON | NIF_MESSAGE;
+	niData.uCallbackMessage = WM_USER_SHELLICON;
+
+	niData.hIcon = (HICON)LoadImage(
+		state.hInst,
+		"IDI_ICON1",
+		IMAGE_ICON,
+		GetSystemMetrics(SM_CXSMICON),
+		GetSystemMetrics(SM_CYSMICON),
+		LR_DEFAULTSIZE);
+
+	Shell_NotifyIcon(NIM_ADD, &niData);
+
+	state.initialized = true;
+}
+
+void NotificationHandler::destroy()
+{
+	NOTIFYICONDATA niData;
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+
+	if(!SDL_GetWindowWMInfo(state.window, &info))
+		return;
+
+	ZeroMemory(&niData, sizeof(NOTIFYICONDATA));
+
+	niData.cbSize = sizeof(NOTIFYICONDATA);
+	niData.hWnd = info.info.win.window;
+	niData.uID = 1;
+
+	Shell_NotifyIcon(NIM_DELETE, &niData);
+}
+
+bool NotificationHandler::handleSdlEvent(const SDL_Event & ev)
+{
+	if(ev.syswm.msg->msg.win.msg == WM_USER_SHELLICON)
+	{
+		auto winMsg = LOWORD(ev.syswm.msg->msg.win.lParam);
+
+		if(winMsg == WM_LBUTTONUP || winMsg == NIN_BALLOONUSERCLICK)
+		{
+			SDL_MinimizeWindow(state.window);
+			SDL_RestoreWindow(state.window);
+			SDL_RaiseWindow(state.window);
+
+			return true;
+		}
+	}
+
+	return false;
+}
+
+#else
+
+void NotificationHandler::notify(std::string msg)
+{
+}
+
+void NotificationHandler::init(SDL_Window * window)
+{
+}
+
+void NotificationHandler::destroy()
+{
+}
+
+bool NotificationHandler::handleSdlEvent(const SDL_Event & ev)
+{
+	return false;
+}
+
+#endif