зеркало из https://github.com/mozilla/pjs.git
184 строки
5.5 KiB
C++
184 строки
5.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** 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
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2000
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* 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 "nsScreenManagerWin.h"
|
|
#include "nsScreenWin.h"
|
|
|
|
|
|
BOOL CALLBACK CountMonitors ( HMONITOR, HDC, LPRECT, LPARAM ioCount ) ;
|
|
|
|
nsScreenManagerWin :: nsScreenManagerWin ( )
|
|
: mNumberOfScreens(0)
|
|
{
|
|
// nothing 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.
|
|
}
|
|
|
|
|
|
nsScreenManagerWin :: ~nsScreenManagerWin()
|
|
{
|
|
}
|
|
|
|
|
|
// addref, release, QI
|
|
NS_IMPL_ISUPPORTS1(nsScreenManagerWin, 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*
|
|
nsScreenManagerWin :: CreateNewScreenObject ( HMONITOR inScreen )
|
|
{
|
|
nsIScreen* retScreen = nsnull;
|
|
|
|
// look through our screen list, hoping to find it. If it's not there,
|
|
// add it and return the new one.
|
|
for ( unsigned i = 0; i < mScreenList.Length(); ++i ) {
|
|
ScreenListItem& curr = mScreenList[i];
|
|
if ( inScreen == curr.mMon ) {
|
|
NS_IF_ADDREF(retScreen = curr.mScreen.get());
|
|
return retScreen;
|
|
}
|
|
} // for each screen.
|
|
|
|
retScreen = new nsScreenWin(inScreen);
|
|
mScreenList.AppendElement ( ScreenListItem ( inScreen, retScreen ) );
|
|
|
|
NS_IF_ADDREF(retScreen);
|
|
return retScreen;
|
|
}
|
|
|
|
|
|
//
|
|
// 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
|
|
nsScreenManagerWin :: ScreenForRect ( PRInt32 inLeft, PRInt32 inTop, PRInt32 inWidth, PRInt32 inHeight,
|
|
nsIScreen **outScreen )
|
|
{
|
|
if ( !(inWidth || inHeight) ) {
|
|
NS_WARNING ( "trying to find screen for sizeless window, using primary monitor" );
|
|
*outScreen = CreateNewScreenObject ( nsnull ); // addrefs
|
|
return NS_OK;
|
|
}
|
|
|
|
RECT globalWindowBounds = { inLeft, inTop, inLeft + inWidth, inTop + inHeight };
|
|
|
|
HMONITOR genScreen = ::MonitorFromRect( &globalWindowBounds, MONITOR_DEFAULTTOPRIMARY );
|
|
|
|
*outScreen = CreateNewScreenObject ( genScreen ); // addrefs
|
|
|
|
return NS_OK;
|
|
|
|
} // ScreenForRect
|
|
|
|
|
|
//
|
|
// GetPrimaryScreen
|
|
//
|
|
// The screen with the menubar/taskbar. This shouldn't be needed very
|
|
// often.
|
|
//
|
|
NS_IMETHODIMP
|
|
nsScreenManagerWin :: GetPrimaryScreen(nsIScreen** aPrimaryScreen)
|
|
{
|
|
*aPrimaryScreen = CreateNewScreenObject ( nsnull ); // addrefs
|
|
return NS_OK;
|
|
|
|
} // GetPrimaryScreen
|
|
|
|
|
|
//
|
|
// CountMonitors
|
|
//
|
|
// Will be called once for every monitor in the system. Just
|
|
// increments the parameter, which holds a ptr to a PRUin32 holding the
|
|
// count up to this point.
|
|
//
|
|
BOOL CALLBACK
|
|
CountMonitors ( HMONITOR, HDC, LPRECT, LPARAM ioParam )
|
|
{
|
|
PRUint32* countPtr = reinterpret_cast<PRUint32*>(ioParam);
|
|
++(*countPtr);
|
|
|
|
return TRUE; // continue the enumeration
|
|
|
|
} // CountMonitors
|
|
|
|
|
|
//
|
|
// GetNumberOfScreens
|
|
//
|
|
// Returns how many physical screens are available.
|
|
//
|
|
NS_IMETHODIMP
|
|
nsScreenManagerWin :: GetNumberOfScreens(PRUint32 *aNumberOfScreens)
|
|
{
|
|
if ( mNumberOfScreens )
|
|
*aNumberOfScreens = mNumberOfScreens;
|
|
else {
|
|
PRUint32 count = 0;
|
|
BOOL result = ::EnumDisplayMonitors(nsnull, nsnull, (MONITORENUMPROC)CountMonitors, (LPARAM)&count);
|
|
if (!result)
|
|
return NS_ERROR_FAILURE;
|
|
*aNumberOfScreens = mNumberOfScreens = count;
|
|
}
|
|
|
|
return NS_OK;
|
|
|
|
} // GetNumberOfScreens
|
|
|
|
NS_IMETHODIMP
|
|
nsScreenManagerWin :: ScreenForNativeWidget(void *aWidget, nsIScreen **outScreen)
|
|
{
|
|
HMONITOR mon = MonitorFromWindow ((HWND) aWidget, MONITOR_DEFAULTTOPRIMARY);
|
|
*outScreen = CreateNewScreenObject (mon);
|
|
return NS_OK;
|
|
}
|