Resolved a TODO: WorkspacesLayer must take the whole workspaces frame into account, not

just the one of the first screen. This also solves a locking bug, as the HWInterface
is already read-locked when WorkspacesLayer::Draw() is called.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20054 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/Desktop.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2001-2006, Haiku.
+ * Copyright 2001-2007, Haiku.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -961,6 +961,8 @@ Desktop::ScreenChanged(Screen* screen, bool makeDefault)
 		window->ServerWindow()->SendMessageToClient(&update);
 	}
 
+	fVirtualScreen.UpdateFrame();
+
 	if (makeDefault) {
 		// store settings
 		BMessage settings;

src/servers/app/VirtualScreen.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2006, Haiku.
+ * Copyright 2005-2007, Haiku.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -155,6 +155,28 @@ VirtualScreen::RemoveScreen(Screen* screen)
 }
 
 
+void
+VirtualScreen::UpdateFrame()
+{
+	int32 virtualWidth = 0, virtualHeight = 0;
+
+	for (int32 i = 0; i < fScreenList.CountItems(); i++) {
+		Screen* screen = fScreenList.ItemAt(i)->screen;
+
+		uint16 width, height;
+		uint32 colorSpace;
+		float frequency;
+		screen->GetMode(width, height, colorSpace, frequency);
+
+		// TODO: compute virtual size depending on the actual screen position!
+		virtualWidth += width;
+		virtualHeight += height;
+	}
+
+	fFrame.Set(0, 0, virtualWidth - 1, virtualHeight - 1);
+}
+
+
 /*!
 	Returns the smallest frame that spans over all screens
 */

src/servers/app/VirtualScreen.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005, Haiku.
+ * Copyright 2005-2007, Haiku.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -37,6 +37,7 @@ class VirtualScreen {
 		status_t			AddScreen(Screen* screen);
 		status_t			RemoveScreen(Screen* screen);
 
+		void				UpdateFrame();
 		BRect				Frame() const;
 
 		// TODO: we need to play with a real multi-screen configuration to

src/servers/app/WorkspacesLayer.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2006, Haiku Inc.
+ * Copyright 2005-2007, Haiku Inc.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -60,15 +60,7 @@ WorkspacesLayer::_GetGrid(int32& columns, int32& rows)
 BRect
 WorkspacesLayer::_ScreenFrame(int32 i)
 {
-	// TODO: we don't need the current screen frame, but the one
+	return Window()->Desktop()->VirtualScreen().Frame();
-	//	from the workspace!
-	uint16 width, height;
-	uint32 colorSpace;
-	float frequency;
-	Window()->Desktop()->ScreenAt(0)->GetMode(width, height,
-		colorSpace, frequency);
-
-	return BRect(0, 0, width - 1, height - 1);
 }