gecko/widget/cocoa/nsScreenManagerCocoa.mm

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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
* Mozilla Corporation
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsScreenManagerCocoa.h"
#include "nsObjCExceptions.h"
#include "nsCOMPtr.h"
#include "nsCocoaUtils.h"
NS_IMPL_ISUPPORTS1(nsScreenManagerCocoa, nsIScreenManager)
nsScreenManagerCocoa::nsScreenManagerCocoa()
{
}
nsScreenManagerCocoa::~nsScreenManagerCocoa()
{
}
nsScreenCocoa*
nsScreenManagerCocoa::ScreenForCocoaScreen(NSScreen *screen)
{
for (PRUint32 i = 0; i < mScreenList.Length(); ++i) {
nsScreenCocoa* sc = mScreenList[i];
if (sc->CocoaScreen() == screen) {
// doesn't addref
return sc;
}
}
// didn't find it; create and insert
nsRefPtr<nsScreenCocoa> sc = new nsScreenCocoa(screen);
mScreenList.AppendElement(sc);
return sc.get();
}
NS_IMETHODIMP
nsScreenManagerCocoa::ScreenForRect (PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight,
nsIScreen **outScreen)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
NSEnumerator *screenEnum = [[NSScreen screens] objectEnumerator];
NSRect inRect = nsCocoaUtils::GeckoRectToCocoaRect(nsIntRect(aX, aY, aWidth, aHeight));
NSScreen *screenWindowIsOn = [NSScreen mainScreen];
float greatestArea = 0;
while (NSScreen *screen = [screenEnum nextObject]) {
NSDictionary *desc = [screen deviceDescription];
if ([desc objectForKey:NSDeviceIsScreen] == nil)
continue;
NSRect r = NSIntersectionRect([screen frame], inRect);
float area = r.size.width * r.size.height;
if (area > greatestArea) {
greatestArea = area;
screenWindowIsOn = screen;
}
}
*outScreen = ScreenForCocoaScreen(screenWindowIsOn);
NS_ADDREF(*outScreen);
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
NS_IMETHODIMP
nsScreenManagerCocoa::GetPrimaryScreen (nsIScreen **outScreen)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
// the mainScreen is the screen with the "key window" (focus, I assume?)
NSScreen *sc = [[NSScreen screens] objectAtIndex:0];
*outScreen = ScreenForCocoaScreen(sc);
NS_ADDREF(*outScreen);
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
NS_IMETHODIMP
nsScreenManagerCocoa::GetNumberOfScreens (PRUint32 *aNumberOfScreens)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
NSArray *ss = [NSScreen screens];
*aNumberOfScreens = [ss count];
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
NS_IMETHODIMP
nsScreenManagerCocoa::ScreenForNativeWidget (void *nativeWidget, nsIScreen **outScreen)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
NSWindow *window = static_cast<NSWindow*>(nativeWidget);
if (window) {
nsIScreen *screen = ScreenForCocoaScreen([window screen]);
*outScreen = screen;
NS_ADDREF(*outScreen);
return NS_OK;
}
*outScreen = nsnull;
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}