From 42a09f00b336ce3405ff7558719f07e6f15326aa Mon Sep 17 00:00:00 2001
From: Paul Gilbert <dreammaster@scummvm.org>
Date: Sun, 9 Sep 2012 00:12:27 +1000
Subject: [PATCH] HOPKINS: Implemented screen lock, unlock, and clear screen

---
 engines/hopkins/graphics.cpp | 26 ++++++++++++++++++++++++--
 engines/hopkins/graphics.h   |  6 ++++++
 engines/hopkins/hopkins.cpp  |  8 ++++----
 3 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/engines/hopkins/graphics.cpp b/engines/hopkins/graphics.cpp
index 7b04e1f1ba2..21c5d6c478e 100644
--- a/engines/hopkins/graphics.cpp
+++ b/engines/hopkins/graphics.cpp
@@ -21,6 +21,7 @@
  */
 
 #include "common/system.h"
+#include "common/rect.h"
 #include "engines/util.h"
 #include "hopkins/files.h"
 #include "hopkins/globals.h"
@@ -161,10 +162,16 @@ int ObjectManager::AJOUTE_OBJET(int objIndex) {
 	return arrIndex;
 }
 
+/*------------------------------------------------------------------------*/
+
 GraphicsManager::GraphicsManager() {
 	SDL_MODEYES = false;
 }
 
+GraphicsManager::~GraphicsManager() {
+}
+
+
 void GraphicsManager::SET_MODE(int width, int height) {
 	if (!SDL_MODEYES) {
 		SDL_ECHELLE = 0;
@@ -192,13 +199,14 @@ void GraphicsManager::SET_MODE(int width, int height) {
 			//height = Reel_Zoom(a2, SDL_ECHELLE);
 		}
 
-		if (bpp == 8)
+		if (bpp == 8) {
 			initGraphics(width, height, true);
-		else {
+		} else {
 			Graphics::PixelFormat pixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0);
 			initGraphics(width, height, true, &pixelFormat);
 		}
 
+		VideoPtr = NULL;
 		XSCREEN = width;
 		YSCREEN = height;
 
@@ -219,4 +227,18 @@ void GraphicsManager::SET_MODE(int width, int height) {
 	}
 }
 
+void GraphicsManager::DD_Lock() {
+	VideoPtr = g_system->lockScreen();
+}
+
+void GraphicsManager::DD_Unlock() {
+	g_system->unlockScreen();
+}
+
+void GraphicsManager::Cls_Video() {
+	assert(VideoPtr);
+
+	VideoPtr->fillRect(Common::Rect(0, 0, XSCREEN, YSCREEN), 0);
+}
+
 } // End of namespace Hopkins
diff --git a/engines/hopkins/graphics.h b/engines/hopkins/graphics.h
index de80160dda6..18cb44254e5 100644
--- a/engines/hopkins/graphics.h
+++ b/engines/hopkins/graphics.h
@@ -26,6 +26,7 @@
 #include "common/scummsys.h"
 #include "common/endian.h"
 #include "common/str.h"
+#include "graphics/surface.h"
 
 namespace Hopkins {
 
@@ -63,10 +64,15 @@ public:
 	int nbrligne;
 	RGB8 cmap[256];
 	bool Linear;
+	Graphics::Surface *VideoPtr;
 public:
 	GraphicsManager();
+	~GraphicsManager();
 
 	void SET_MODE(int width, int height);
+	void DD_Lock();
+	void DD_Unlock();
+	void Cls_Video();
 };
 
 } // End of namespace Hopkins
diff --git a/engines/hopkins/hopkins.cpp b/engines/hopkins/hopkins.cpp
index 342d7d2361f..af8cd668ef3 100644
--- a/engines/hopkins/hopkins.cpp
+++ b/engines/hopkins/hopkins.cpp
@@ -66,10 +66,10 @@ Common::Error HopkinsEngine::run() {
 	GLOBALS.HELICO = 0;
 	_mouse.hideCursor();
 
-  /*
-  DD_Lock();
-  Cls_Video();
-  DD_Unlock();
+	_graphicsManager.DD_Lock();
+	_graphicsManager.Cls_Video();
+	_graphicsManager.DD_Unlock();
+	/*
   LOAD_IMAGE("LINUX");
   FADE_INW();
   SDL_Delay(1500);