#45872

r=mkaply, a=brendan
Implement Screen and ScreenManager classes on OS/2 - not part of build yet

widget/src/os2/nsScreenManagerOS2.cpp

@@ -0,0 +1,112 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#include "nsScreenManagerOS2.h"
+#include "nsScreenOS2.h"
+
+
+nsScreenManagerOS2 :: nsScreenManagerOS2 ( )
+{
+  NS_INIT_REFCNT();
+
+  // nothing else to do. I guess we could cache a bunch of information
+  // here, but we want to ask the device at runtime in case anything
+  // has changed.
+}
+
+
+nsScreenManagerOS2 :: ~nsScreenManagerOS2()
+{
+  // nothing to see here.
+}
+
+
+// addref, release, QI
+NS_IMPL_ISUPPORTS(nsScreenManagerOS2, NS_GET_IID(nsIScreenManager))
+
+
+//
+// CreateNewScreenObject
+//
+// Utility routine. Creates a new screen object from the given device handle
+//
+// NOTE: For this "single-monitor" impl, we just always return the cached primary
+//        screen. This should change when a multi-monitor impl is done.
+//
+nsIScreen* 
+nsScreenManagerOS2 :: CreateNewScreenObject (  )
+{
+  nsIScreen* retval = nsnull;
+  if ( !mCachedMainScreen )
+    mCachedMainScreen = new nsScreenOS2 ( );
+  NS_IF_ADDREF(retval = mCachedMainScreen.get());
+  
+  return retval;
+}
+
+
+//
+// ScreenForRect 
+//
+// Returns the screen that contains the rectangle. If the rect overlaps
+// multiple screens, it picks the screen with the greatest area of intersection.
+//
+// The coordinates are in pixels (not twips) and in screen coordinates.
+//
+NS_IMETHODIMP
+nsScreenManagerOS2 :: ScreenForRect ( PRInt32 /*inLeft*/, PRInt32 /*inTop*/, PRInt32 /*inWidth*/,
+                                       PRInt32 /*inHeight*/, nsIScreen **outScreen )
+{
+  GetPrimaryScreen ( outScreen );
+  return NS_OK;
+    
+} // ScreenForRect
+
+
+//
+// GetPrimaryScreen
+//
+// The screen with the menubar/taskbar. This shouldn't be needed very
+// often.
+//
+NS_IMETHODIMP 
+nsScreenManagerOS2 :: GetPrimaryScreen(nsIScreen * *aPrimaryScreen) 
+{
+  *aPrimaryScreen = CreateNewScreenObject();    // addrefs  
+  return NS_OK;
+  
+} // GetPrimaryScreen
+
+
+//
+// GetNumberOfScreens
+//
+// Returns how many physical screens are available.
+//
+NS_IMETHODIMP
+nsScreenManagerOS2 :: GetNumberOfScreens(PRUint32 *aNumberOfScreens)
+{
+  *aNumberOfScreens = 1;
+  return NS_OK;
+  
+} // GetNumberOfScreens
+

widget/src/os2/nsScreenManagerOS2.h

@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#ifndef nsScreenManagerOS2_h___
+#define nsScreenManagerOS2_h___
+
+#include "nsIScreenManager.h"
+#include "nsIScreen.h"
+#include "nsCOMPtr.h"
+
+//------------------------------------------------------------------------
+
+class nsScreenManagerOS2 : public nsIScreenManager
+{
+public:
+  nsScreenManagerOS2 ( );
+  virtual ~nsScreenManagerOS2();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSISCREENMANAGER
+
+private:
+
+  nsIScreen* CreateNewScreenObject ( ) ;
+
+    // cache the primary screen object to avoid memory allocation every time
+  nsCOMPtr<nsIScreen> mCachedMainScreen;
+
+};
+
+#endif  // nsScreenManagerOS2_h___ 

widget/src/os2/nsScreenOS2.cpp

@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#include "nsScreenOS2.h"
+
+#define INCL_PM
+#include <os2.h>
+
+
+nsScreenOS2 :: nsScreenOS2 (  )
+{
+  NS_INIT_REFCNT();
+
+  // nothing else to do. I guess we could cache a bunch of information
+  // here, but we want to ask the device at runtime in case anything
+  // has changed.
+}
+
+
+nsScreenOS2 :: ~nsScreenOS2()
+{
+  // nothing to see here.
+}
+
+
+// addref, release, QI
+NS_IMPL_ISUPPORTS(nsScreenOS2, NS_GET_IID(nsIScreen))
+
+
+NS_IMETHODIMP
+nsScreenOS2 :: GetRect(PRInt32 *outLeft, PRInt32 *outTop, PRInt32 *outWidth, PRInt32 *outHeight)
+{
+  *outTop = 0;
+  *outLeft = 0;
+  HDC hdc = WinQueryWindowDC(HWND_DESKTOP);
+  LONG alArray[2];
+  DevQueryCaps(hdc, CAPS_HORIZONTAL_RESOLUTION, CAPS_VERTICAL_RESOLUTION, alArray);
+
+  *outWidth = alArray[0];
+  *outHeight = alArray[1];
+
+  return NS_OK;
+  
+} // GetRect
+
+
+NS_IMETHODIMP
+nsScreenOS2 :: GetAvailRect(PRInt32 *outLeft, PRInt32 *outTop, PRInt32 *outWidth, PRInt32 *outHeight)
+{
+  *outTop = 0;
+  *outLeft = 0;
+  *outWidth = WinQuerySysValue( HWND_DESKTOP, SV_CXFULLSCREEN );
+  *outHeight = WinQuerySysValue( HWND_DESKTOP, SV_CYFULLSCREEN ); 
+
+  return NS_OK;
+  
+} // GetAvailRect
+
+
+NS_IMETHODIMP 
+nsScreenOS2 :: GetPixelDepth(PRInt32 *aPixelDepth)
+{
+  LONG lCap;
+  HDC hdc = WinQueryWindowDC(HWND_DESKTOP);
+
+  DevQueryCaps(hdc, CAPS_COLOR_BITCOUNT, CAPS_COLOR_BITCOUNT, &lCap);
+
+  *aPixelDepth = (PRInt32)lCap;
+
+  return NS_OK;
+
+} // GetPixelDepth
+
+
+NS_IMETHODIMP 
+nsScreenOS2 :: GetColorDepth(PRInt32 *aColorDepth)
+{
+  return GetPixelDepth ( aColorDepth );
+
+} // GetColorDepth
+
+

widget/src/os2/nsScreenOS2.h

@@ -0,0 +1,43 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#ifndef nsScreenOS2_h___
+#define nsScreenOS2_h___
+
+#include "nsIScreen.h"
+
+//------------------------------------------------------------------------
+
+class nsScreenOS2 : public nsIScreen
+{
+public:
+  nsScreenOS2 ( );
+  virtual ~nsScreenOS2();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSISCREEN
+
+private:
+
+};
+
+#endif  // nsScreenOS2_h___