117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsChildWindow.h"
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#include "nsCOMPtr.h"
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#include "nsRegionMac.h"
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//-------------------------------------------------------------------------
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//
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//-------------------------------------------------------------------------
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nsChildWindow::nsChildWindow() : nsWindow()
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{
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WIDGET_SET_CLASSNAME("nsChildWindow");
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mClipChildren = PR_FALSE;
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mClipSiblings = PR_FALSE;
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}
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nsChildWindow::~nsChildWindow()
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{
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}
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//-------------------------------------------------------------------------
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//
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//
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//-------------------------------------------------------------------------
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nsresult nsChildWindow::StandardCreate(nsIWidget *aParent,
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const nsRect &aRect,
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EVENT_CALLBACK aHandleEventFunction,
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nsIDeviceContext *aContext,
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nsIAppShell *aAppShell,
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nsIToolkit *aToolkit,
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nsWidgetInitData *aInitData,
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nsNativeWidget aNativeParent) // should always be nil here
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{
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if (aInitData)
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{
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mClipChildren = aInitData->clipChildren;
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mClipSiblings = aInitData->clipSiblings;
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}
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return Inherited::StandardCreate(aParent,
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aRect,
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aHandleEventFunction,
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aContext,
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aAppShell,
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aToolkit,
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aInitData,
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aNativeParent);
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}
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//-------------------------------------------------------------------------
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//
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//
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//-------------------------------------------------------------------------
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void nsChildWindow::CalcWindowRegions()
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{
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Inherited::CalcWindowRegions();
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// clip the siblings out of the window region and visRegion
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if (mClipSiblings && mParent) {
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// need to walk the siblings backwards, to get clipping right.
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nsCOMPtr<nsIBidirectionalEnumerator> siblings = getter_AddRefs((nsIBidirectionalEnumerator*)mParent->GetChildren());
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if (siblings && NS_SUCCEEDED(siblings->Last())) {
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StRegionFromPool siblingRgn;
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if (siblingRgn == nsnull)
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return;
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do {
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// when we reach ourself, stop clipping.
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nsCOMPtr<nsISupports> item;
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if (NS_FAILED(siblings->CurrentItem(getter_AddRefs(item))) || item == this)
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break;
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nsCOMPtr<nsIWidget> sibling(do_QueryInterface(item));
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PRBool visible;
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sibling->IsVisible(visible);
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if (visible) { // don't clip if not visible.
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// get sibling's bounds in parent's coordinate system.
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nsRect siblingRect;
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sibling->GetBounds(siblingRect);
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// transform from parent's coordinate system to widget coordinates.
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siblingRect.MoveBy(-mBounds.x, -mBounds.y);
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Rect macRect;
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::SetRect(&macRect, siblingRect.x, siblingRect.y, siblingRect.XMost(), siblingRect.YMost());
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::RectRgn(siblingRgn, &macRect);
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::DiffRgn(mWindowRegion, siblingRgn, mWindowRegion);
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::DiffRgn(mVisRegion, siblingRgn, mVisRegion);
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}
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} while (NS_SUCCEEDED(siblings->Prev()));
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}
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}
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}
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