mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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190 lines
6.0 KiB
C++
190 lines
6.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsScreenManagerMac.h"
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#include "nsScreenMac.h"
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#include "nsCOMPtr.h"
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class ScreenListItem
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{
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public:
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ScreenListItem ( GDHandle inGD, nsIScreen* inScreen )
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: mGD(inGD), mScreen(inScreen) { } ;
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GDHandle mGD;
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nsCOMPtr<nsIScreen> mScreen;
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};
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nsScreenManagerMac :: nsScreenManagerMac ( )
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{
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// nothing else to do. I guess we could cache a bunch of information
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// here, but we want to ask the device at runtime in case anything
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// has changed.
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}
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nsScreenManagerMac :: ~nsScreenManagerMac()
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{
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// walk our list of cached screens and delete them.
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for ( int i = 0; i < mScreenList.Count(); ++i ) {
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ScreenListItem* item = NS_REINTERPRET_CAST(ScreenListItem*, mScreenList[i]);
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delete item;
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}
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}
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// addref, release, QI
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NS_IMPL_ISUPPORTS1(nsScreenManagerMac, nsIScreenManager)
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//
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// CreateNewScreenObject
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//
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// Utility routine. Creates a new screen object from the given device handle
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//
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nsIScreen*
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nsScreenManagerMac :: CreateNewScreenObject ( GDHandle inDevice )
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{
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nsIScreen* retScreen = nsnull;
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// look through our screen list, hoping to find it. If it's not there,
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// add it and return the new one.
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for ( int i = 0; i < mScreenList.Count(); ++i ) {
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ScreenListItem* curr = NS_REINTERPRET_CAST(ScreenListItem*, mScreenList[i]);
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if ( inDevice == curr->mGD ) {
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NS_IF_ADDREF(retScreen = curr->mScreen.get());
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return retScreen;
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}
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} // for each screen.
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// didn't find it in the list, so add it and return that item.
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retScreen = new nsScreenMac ( inDevice );
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ScreenListItem* listItem = new ScreenListItem ( inDevice, retScreen );
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mScreenList.AppendElement ( listItem );
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NS_IF_ADDREF(retScreen);
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return retScreen;
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}
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//
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// ScreenForRect
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//
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// Returns the screen that contains the rectangle. If the rect overlaps
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// multiple screens, it picks the screen with the greatest area of intersection.
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//
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// The coordinates are in pixels (not twips) and in screen coordinates.
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//
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NS_IMETHODIMP
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nsScreenManagerMac :: ScreenForRect ( PRInt32 inLeft, PRInt32 inTop, PRInt32 inWidth, PRInt32 inHeight,
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nsIScreen **outScreen )
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{
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if ( !(inWidth || inHeight) ) {
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NS_WARNING ( "trying to find screen for sizeless window, using primary monitor" );
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*outScreen = CreateNewScreenObject ( ::GetMainDevice() ); // addrefs
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return NS_OK;
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}
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Rect globalWindowBounds = { inTop, inLeft, inTop + inHeight, inLeft + inWidth };
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GDHandle currDevice = ::GetDeviceList();
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GDHandle deviceWindowIsOn = ::GetMainDevice();
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PRInt32 greatestArea = 0;
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while ( currDevice ) {
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if ( ::TestDeviceAttribute(currDevice, screenDevice) && ::TestDeviceAttribute(currDevice, screenActive) ) {
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// calc the intersection.
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Rect intersection;
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Rect devRect = (**currDevice).gdRect;
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::SectRect ( &globalWindowBounds, &devRect, &intersection );
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PRInt32 intersectArea = (intersection.right - intersection.left) *
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(intersection.bottom - intersection.top);
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if ( intersectArea > greatestArea ) {
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greatestArea = intersectArea;
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deviceWindowIsOn = currDevice;
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}
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} // if device is a screen and visible
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currDevice = ::GetNextDevice(currDevice);
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} // foreach device in list
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*outScreen = CreateNewScreenObject ( deviceWindowIsOn ); // addrefs
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return NS_OK;
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} // ScreenForRect
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//
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// GetPrimaryScreen
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//
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// The screen with the menubar/taskbar. This shouldn't be needed very
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// often.
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//
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NS_IMETHODIMP
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nsScreenManagerMac :: GetPrimaryScreen(nsIScreen * *aPrimaryScreen)
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{
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*aPrimaryScreen = CreateNewScreenObject ( ::GetMainDevice() ); // addrefs
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return NS_OK;
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} // GetPrimaryScreen
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//
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// GetNumberOfScreens
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//
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// Returns how many physical screens are available.
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//
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NS_IMETHODIMP
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nsScreenManagerMac :: GetNumberOfScreens(PRUint32 *aNumberOfScreens)
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{
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*aNumberOfScreens = 0;
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GDHandle currDevice = ::GetDeviceList();
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while ( currDevice ) {
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if ( ::TestDeviceAttribute(currDevice, screenDevice) && ::TestDeviceAttribute(currDevice, screenActive) )
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++(*aNumberOfScreens);
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currDevice = ::GetNextDevice(currDevice);
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}
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return NS_OK;
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} // GetNumberOfScreens
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NS_IMETHODIMP
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nsScreenManagerMac :: ScreenForNativeWidget(void *nativeWidget, nsIScreen **aScreen)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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