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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2004 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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.
*/
#import "COSXScreenSaver.h"
#import "COSXScreenSaverUtil.h"
#import "CLog.h"
#import "IEventQueue.h"
#import "IPrimaryScreen.h"
#import <string.h>
//
// COSXScreenSaver
//
COSXScreenSaver::COSXScreenSaver(void* eventTarget) :
m_eventTarget(eventTarget),
m_enabled(true)
{
m_autoReleasePool = screenSaverUtilCreatePool();
m_screenSaverController = screenSaverUtilCreateController();
// install launch/termination event handlers
EventTypeSpec launchEventTypes[2];
launchEventTypes[0].eventClass = kEventClassApplication;
launchEventTypes[0].eventKind = kEventAppLaunched;
launchEventTypes[1].eventClass = kEventClassApplication;
launchEventTypes[1].eventKind = kEventAppTerminated;
EventHandlerUPP launchTerminationEventHandler =
NewEventHandlerUPP(launchTerminationCallback);
InstallApplicationEventHandler(launchTerminationEventHandler, 2,
launchEventTypes, this,
&m_launchTerminationEventHandlerRef);
DisposeEventHandlerUPP(launchTerminationEventHandler);
m_screenSaverPSN.highLongOfPSN = 0;
m_screenSaverPSN.lowLongOfPSN = 0;
// test if screensaver is running and find process number
if (isActive()) {
ProcessInfoRec procInfo;
Str31 procName; // pascal string. first byte holds length.
memset(&procInfo, 0, sizeof(procInfo));
procInfo.processName = procName;
procInfo.processInfoLength = sizeof(ProcessInfoRec);
ProcessSerialNumber psn;
OSErr err = GetNextProcess(&psn);
while (err == 0) {
memset(procName, 0, sizeof(procName));
err = GetProcessInformation(&psn, &procInfo);
if (err != 0) {
break;
}
if (strcmp("ScreenSaverEngine", (const char*)&procName[1]) == 0) {
m_screenSaverPSN = psn;
break;
}
err = GetNextProcess(&psn);
}
}
}
COSXScreenSaver::~COSXScreenSaver()
{
RemoveEventHandler(m_launchTerminationEventHandlerRef);
// screenSaverUtilReleaseController(m_screenSaverController);
screenSaverUtilReleasePool(m_autoReleasePool);
}
void
COSXScreenSaver::enable()
{
m_enabled = true;
screenSaverUtilEnable(m_screenSaverController);
}
void
COSXScreenSaver::disable()
{
m_enabled = false;
screenSaverUtilDisable(m_screenSaverController);
}
void
COSXScreenSaver::activate()
{
screenSaverUtilActivate(m_screenSaverController);
}
void
COSXScreenSaver::deactivate()
{
screenSaverUtilDeactivate(m_screenSaverController, m_enabled);
}
bool
COSXScreenSaver::isActive() const
{
return (screenSaverUtilIsActive(m_screenSaverController) != 0);
}
void
COSXScreenSaver::processLaunched(ProcessSerialNumber psn)
{
CFStringRef processName;
OSStatus err = CopyProcessName(&psn, &processName);
if (err == 0 && CFEqual(CFSTR("ScreenSaverEngine"), processName)) {
m_screenSaverPSN = psn;
LOG((CLOG_DEBUG1 "ScreenSaverEngine launched. Enabled=%d", m_enabled));
if (m_enabled) {
EVENTQUEUE->addEvent(
CEvent(IPrimaryScreen::getScreensaverActivatedEvent(),
m_eventTarget));
}
}
}
void
COSXScreenSaver::processTerminated(ProcessSerialNumber psn)
{
if (m_screenSaverPSN.highLongOfPSN == psn.highLongOfPSN &&
m_screenSaverPSN.lowLongOfPSN == psn.lowLongOfPSN) {
LOG((CLOG_DEBUG1 "ScreenSaverEngine terminated. Enabled=%d", m_enabled));
if (m_enabled) {
EVENTQUEUE->addEvent(
CEvent(IPrimaryScreen::getScreensaverDeactivatedEvent(),
m_eventTarget));
}
m_screenSaverPSN.highLongOfPSN = 0;
m_screenSaverPSN.lowLongOfPSN = 0;
}
}
pascal OSStatus
COSXScreenSaver::launchTerminationCallback(
EventHandlerCallRef nextHandler,
EventRef theEvent, void* userData)
{
OSStatus result;
ProcessSerialNumber psn;
EventParamType actualType;
UInt32 actualSize;
result = GetEventParameter(theEvent, kEventParamProcessID,
typeProcessSerialNumber, &actualType,
sizeof(psn), &actualSize, &psn);
if ((result == noErr) &&
(actualSize > 0) &&
(actualType == typeProcessSerialNumber)) {
COSXScreenSaver* screenSaver = (COSXScreenSaver*)userData;
UInt32 eventKind = GetEventKind(theEvent);
if (eventKind == kEventAppLaunched) {
screenSaver->processLaunched(psn);
}
else if (eventKind == kEventAppTerminated) {
screenSaver->processTerminated(psn);
}
}
return (CallNextEventHandler(nextHandler, theEvent));
}
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