From 8b45875e245f8eba2403987cdb4ba128720048a9 Mon Sep 17 00:00:00 2001
From: Filippos Karapetis
Date: Thu, 24 Dec 2015 13:00:10 +0200
Subject: LAB: Get rid of _screenImage

Thanks to wjp for finding this
---
 engines/lab/lab.cpp     |  6 ------
 engines/lab/lab.h       |  1 -
 engines/lab/special.cpp | 17 +++++------------
 3 files changed, 5 insertions(+), 19 deletions(-)

diff --git a/engines/lab/lab.cpp b/engines/lab/lab.cpp
index b36bb136cf..d21dc66a30 100644
--- a/engines/lab/lab.cpp
+++ b/engines/lab/lab.cpp
@@ -89,7 +89,6 @@ LabEngine::LabEngine(OSystem *syst, const ADGameDescription *gameDesc)
 	_utils = nullptr;
 	_console = nullptr;
 	_journalBackImage = nullptr;
-	_screenImage = nullptr;
 
 	_lastTooLong = false;
 	_interfaceOff = false;
@@ -158,10 +157,6 @@ LabEngine::~LabEngine() {
 	delete _utils;
 	delete _console;
 	delete _journalBackImage;
-	// _screenImage->_imageData is always pointing to the current drawing buffer.
-	// It shouldn't be deleted there.
-	_screenImage->_imageData = nullptr;
-	delete _screenImage;
 }
 
 Common::Error LabEngine::run() {
@@ -179,7 +174,6 @@ Common::Error LabEngine::run() {
 	_utils = new Utils(this);
 	_console = new Console(this);
 	_journalBackImage = new Image(this);
-	_screenImage = new Image(this);
 
 	if (getPlatform() == Common::kPlatformWindows) {
 		// Check if this is the Wyrmkeep trial
diff --git a/engines/lab/lab.h b/engines/lab/lab.h
index 752cbab0a3..37415057ab 100644
--- a/engines/lab/lab.h
+++ b/engines/lab/lab.h
@@ -136,7 +136,6 @@ private:
 	MapData *_maps;
 	Image *_monitorButton;
 	Image *_journalBackImage;
-	Image *_screenImage;
 	TextFont *_journalFont;
 
 public:
diff --git a/engines/lab/special.cpp b/engines/lab/special.cpp
index de9f1d9786..9a631e4980 100644
--- a/engines/lab/special.cpp
+++ b/engines/lab/special.cpp
@@ -141,8 +141,6 @@ void LabEngine::loadJournalData() {
 	// Keep a copy of the blank journal
 	_blankJournal = new byte[_graphics->_screenBytesPerPage];
 	memcpy(_blankJournal, _journalBackImage->_imageData, _graphics->_screenBytesPerPage);
-
-	_screenImage->_imageData = _graphics->getCurrentDrawingBuffer();
 }
 
 void LabEngine::drawJournalText() {
@@ -182,15 +180,13 @@ void LabEngine::turnPage(bool fromLeft) {
 		for (int i = 0; i < _graphics->_screenWidth; i += 8) {
 			updateMusicAndEvents();
 			waitTOF();
-			_screenImage->_imageData = _graphics->getCurrentDrawingBuffer();
-			_journalBackImage->blitBitmap(i, 0, _screenImage, i, 0, 8, _graphics->_screenHeight, false);
+			_journalBackImage->blitBitmap(i, 0, nullptr, i, 0, 8, _graphics->_screenHeight, false);
 		}
 	} else {
 		for (int i = (_graphics->_screenWidth - 8); i > 0; i -= 8) {
 			updateMusicAndEvents();
 			waitTOF();
-			_screenImage->_imageData = _graphics->getCurrentDrawingBuffer();
-			_journalBackImage->blitBitmap(i, 0, _screenImage, i, 0, 8, _graphics->_screenHeight, false);
+			_journalBackImage->blitBitmap(i, 0, nullptr, i, 0, 8, _graphics->_screenHeight, false);
 		}
 	}
 }
@@ -202,7 +198,7 @@ void LabEngine::drawJournal(uint16 wipenum, bool needFade) {
 	_graphics->loadBackPict("P:Journal.pic", _highPalette);
 
 	if (wipenum == 0)
-		_journalBackImage->blitBitmap(0, 0, _screenImage, 0, 0, _graphics->_screenWidth, _graphics->_screenHeight, false);
+		_journalBackImage->blitBitmap(0, 0, nullptr, 0, 0, _graphics->_screenWidth, _graphics->_screenHeight, false);
 	else
 		turnPage((wipenum == 1));
 
@@ -261,10 +257,9 @@ void LabEngine::doJournal() {
 	_graphics->blackAllScreen();
 	_lastPage = false;
 
-	_screenImage->_width = _journalBackImage->_width = _graphics->_screenWidth;
-	_screenImage->_height = _journalBackImage->_height = _graphics->_screenHeight;
+	_journalBackImage->_width = _graphics->_screenWidth;
+	_journalBackImage->_height = _graphics->_screenHeight;
 	_journalBackImage->_imageData = nullptr;
-	_screenImage->_imageData = _graphics->getCurrentDrawingBuffer();
 
 	updateMusicAndEvents();
 	loadJournalData();
@@ -283,8 +278,6 @@ void LabEngine::doJournal() {
 	_event->freeButtonList(&_journalButtonList);
 	_graphics->closeFont(&_journalFont);
 
-	_screenImage->_imageData = _graphics->getCurrentDrawingBuffer();
-
 	_graphics->rectFill(0, 0, _graphics->_screenWidth - 1, _graphics->_screenHeight - 1, 0);
 	_graphics->blackScreen();
 }
-- 
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