From 4fbc3f58031322dac5276815ada9c20e66e5a70f Mon Sep 17 00:00:00 2001
From: Stefano Ceccherini <stefano.ceccherini@gmail.com>
Date: Mon, 12 Dec 2005 20:46:13 +0000
Subject: [PATCH] Researched and implemented
 BDirectWindow::SupportsWindowMode() more correctly, both for r5 and haiku

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15523 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/kits/game/DirectWindow.cpp | 25 +++++++++++--------------
 src/servers/app/ServerApp.cpp  | 14 --------------
 2 files changed, 11 insertions(+), 28 deletions(-)

diff --git a/src/kits/game/DirectWindow.cpp b/src/kits/game/DirectWindow.cpp
index 69002e5c46..3382c8878a 100644
--- a/src/kits/game/DirectWindow.cpp
+++ b/src/kits/game/DirectWindow.cpp
@@ -9,6 +9,7 @@
 
 
 #include <DirectWindow.h>
+#include <Screen.h>
 
 #include <clipping.h>
 #include <DirectWindowPrivate.h>
@@ -17,8 +18,8 @@
 #	include <R5_AppServerLink.h>
 #	include <R5_Session.h>
 #	define DW_GET_SYNC_DATA		0x880
-#	define DW_SET_FULLSCREEN		0x881
-#	define DW_SUPPORTS_WINDOW_MODE 0xF2C
+#	define DW_SET_FULLSCREEN	0x881
+#	define DW_GET_SCREEN_FLAGS	0xF2C
 #else
 #	include <AppServerLink.h>
 #	include <ServerProtocol.h>
@@ -318,22 +319,18 @@ bool
 BDirectWindow::SupportsWindowMode(screen_id id)
 {
 #ifdef HAIKU_TARGET_PLATFORM_BEOS
-	int32 result = 0;
+	int32 flags = 0;
 	_BAppServerLink_ link;
-	link.fSession->swrite_l(DW_SUPPORTS_WINDOW_MODE);
+	link.fSession->swrite_l(DW_GET_SCREEN_FLAGS);
 	link.fSession->swrite_l(id.id);
 	link.fSession->sync();
-	link.fSession->sread(sizeof(result), &result);
-	return result & true;
+	link.fSession->sread(sizeof(flags), &flags);
+	return flags & B_PARALLEL_ACCESS;
 #else
-	BPrivate::AppServerLink link;
-	link.StartMessage(AS_DIRECT_WINDOW_SUPPORTS_WINDOW_MODE);
-	link.Attach<screen_id>(id);
-
-	int32 reply;
-	if (link.FlushWithReply(reply) == B_OK
-		&& reply == B_OK)
-		return true;
+	display_mode mode;
+	status_t status = BScreen(id).GetMode(&mode);
+	if (status == B_OK)
+		return mode.flags & B_PARALLEL_ACCESS;
 #endif
 
 	return false;
diff --git a/src/servers/app/ServerApp.cpp b/src/servers/app/ServerApp.cpp
index 01fce78ed0..2a421d2274 100644
--- a/src/servers/app/ServerApp.cpp
+++ b/src/servers/app/ServerApp.cpp
@@ -432,20 +432,6 @@ ServerApp::_DispatchMessage(int32 code, BPrivate::LinkReceiver& link)
 			break;
 		}
 
-		case AS_DIRECT_WINDOW_SUPPORTS_WINDOW_MODE:
-		{
-			// TODO: How to determine this?
-			screen_id id;
-			if (link.Read<screen_id>(&id) == B_OK) {
-				fLink.StartMessage(B_OK);
-				fLink.Attach<bool>(true);
-			} else
-				fLink.StartMessage(B_BAD_VALUE);
-
-			fLink.Flush();
-			break;
-		}
-
 		case AS_UPDATE_COLORS:
 		{
 			// NOTE: R2: Eventually we will have windows which will notify their children of changes in