michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsScreenManagerCocoa.h"
michael@0: #include "nsObjCExceptions.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsCocoaUtils.h"
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsScreenManagerCocoa, nsIScreenManager)
michael@0: 
michael@0: nsScreenManagerCocoa::nsScreenManagerCocoa()
michael@0: {
michael@0: }
michael@0: 
michael@0: nsScreenManagerCocoa::~nsScreenManagerCocoa()
michael@0: {
michael@0: }
michael@0: 
michael@0: nsScreenCocoa*
michael@0: nsScreenManagerCocoa::ScreenForCocoaScreen(NSScreen *screen)
michael@0: {
michael@0:     for (uint32_t i = 0; i < mScreenList.Length(); ++i) {
michael@0:         nsScreenCocoa* sc = mScreenList[i];
michael@0:         if (sc->CocoaScreen() == screen) {
michael@0:             // doesn't addref
michael@0:             return sc;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // didn't find it; create and insert
michael@0:     nsRefPtr<nsScreenCocoa> sc = new nsScreenCocoa(screen);
michael@0:     mScreenList.AppendElement(sc);
michael@0:     return sc.get();
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsScreenManagerCocoa::ScreenForRect (int32_t aX, int32_t aY, int32_t aWidth, int32_t aHeight,
michael@0:                                      nsIScreen **outScreen)
michael@0: {
michael@0:     NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
michael@0: 
michael@0:     NSEnumerator *screenEnum = [[NSScreen screens] objectEnumerator];
michael@0:     NSRect inRect = nsCocoaUtils::GeckoRectToCocoaRect(nsIntRect(aX, aY, aWidth, aHeight));
michael@0:     NSScreen *screenWindowIsOn = [NSScreen mainScreen];
michael@0:     float greatestArea = 0;
michael@0: 
michael@0:     while (NSScreen *screen = [screenEnum nextObject]) {
michael@0:         NSDictionary *desc = [screen deviceDescription];
michael@0:         if ([desc objectForKey:NSDeviceIsScreen] == nil)
michael@0:             continue;
michael@0: 
michael@0:         NSRect r = NSIntersectionRect([screen frame], inRect);
michael@0:         float area = r.size.width * r.size.height;
michael@0:         if (area > greatestArea) {
michael@0:             greatestArea = area;
michael@0:             screenWindowIsOn = screen;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     *outScreen = ScreenForCocoaScreen(screenWindowIsOn);
michael@0:     NS_ADDREF(*outScreen);
michael@0:     return NS_OK;
michael@0: 
michael@0:     NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsScreenManagerCocoa::GetPrimaryScreen (nsIScreen **outScreen)
michael@0: {
michael@0:     NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
michael@0: 
michael@0:     // the mainScreen is the screen with the "key window" (focus, I assume?)
michael@0:     NSScreen *sc = [[NSScreen screens] objectAtIndex:0];
michael@0: 
michael@0:     *outScreen = ScreenForCocoaScreen(sc);
michael@0:     NS_ADDREF(*outScreen);
michael@0: 
michael@0:     return NS_OK;
michael@0: 
michael@0:     NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsScreenManagerCocoa::GetNumberOfScreens (uint32_t *aNumberOfScreens)
michael@0: {
michael@0:     NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
michael@0: 
michael@0:     NSArray *ss = [NSScreen screens];
michael@0: 
michael@0:     *aNumberOfScreens = [ss count];
michael@0: 
michael@0:     return NS_OK;
michael@0: 
michael@0:     NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsScreenManagerCocoa::GetSystemDefaultScale(float *aDefaultScale)
michael@0: {
michael@0:     *aDefaultScale = 1.0f;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsScreenManagerCocoa::ScreenForNativeWidget (void *nativeWidget, nsIScreen **outScreen)
michael@0: {
michael@0:     NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
michael@0: 
michael@0:     NSWindow *window = static_cast<NSWindow*>(nativeWidget);
michael@0:     if (window) {
michael@0:         nsIScreen *screen = ScreenForCocoaScreen([window screen]);
michael@0:         *outScreen = screen;
michael@0:         NS_ADDREF(*outScreen);
michael@0:         return NS_OK;
michael@0:     }
michael@0: 
michael@0:     *outScreen = nullptr;
michael@0:     return NS_OK;
michael@0: 
michael@0:     NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
michael@0: }