5556760ab2
Added this so you can now tell if your laying out to a printer. r=attinasi sr=buster git-svn-id: svn://10.0.0.236/trunk@84586 18797224-902f-48f8-a5cc-f745e15eee43
153 lines
3.6 KiB
C++
153 lines
3.6 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 "nsPresContext.h"
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#include "nsIPrintContext.h"
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#include "nsIDeviceContext.h"
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#include "nsUnitConversion.h"
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#include "nsIView.h"
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#include "nsIWidget.h"
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#include "nsGfxCIID.h"
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#include "nsLayoutAtoms.h"
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class PrintContext : public nsPresContext , nsIPrintContext{
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public:
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//NS_DEFINE_STATIC_IID_ACCESSOR(NS_IPRINTCONTEXT_IID)
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//Interfaces for addref and release and queryinterface
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//NOTE macro used is for classes that inherit from
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// another class. Only the base class should use NS_DECL_ISUPPORTS
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NS_DECL_ISUPPORTS_INHERITED
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PrintContext();
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~PrintContext();
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NS_IMETHOD GetMedium(nsIAtom** aMedium);
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NS_IMETHOD IsPaginated(PRBool* aResult);
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NS_IMETHOD GetPageWidth(nscoord* aResult);
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NS_IMETHOD GetPageHeight(nscoord* aResult);
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};
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PrintContext::PrintContext()
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{
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}
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PrintContext::~PrintContext()
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{
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}
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NS_IMPL_ADDREF_INHERITED(PrintContext,nsPresContext)
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NS_IMPL_RELEASE_INHERITED(PrintContext,nsPresContext)
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//---------------------------------------------------------
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NS_IMETHODIMP
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PrintContext::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (aIID.Equals(NS_GET_IID(nsIPrintContext))) {
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*aInstancePtr = (void *)((nsIPrintContext*)this);
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return nsPresContext::QueryInterface(aIID, aInstancePtr);
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}
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NS_IMETHODIMP
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PrintContext::GetMedium(nsIAtom** aResult)
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{
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NS_PRECONDITION(nsnull != aResult, "null ptr");
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if (nsnull == aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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*aResult = nsLayoutAtoms::print;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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PrintContext::IsPaginated(PRBool* aResult)
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{
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NS_PRECONDITION(nsnull != aResult, "null ptr");
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if (nsnull == aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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*aResult = PR_TRUE;
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return NS_OK;
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}
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NS_IMETHODIMP
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PrintContext::GetPageWidth(nscoord* aResult)
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{
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PRInt32 width,height;
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NS_PRECONDITION(nsnull != aResult, "null ptr");
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if (nsnull == aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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mDeviceContext->GetDeviceSurfaceDimensions(width,height);
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// a xp margin can be added here
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*aResult = width;
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return NS_OK;
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}
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NS_IMETHODIMP
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PrintContext::GetPageHeight(nscoord* aResult)
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{
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PRInt32 width,height;
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NS_PRECONDITION(nsnull != aResult, "null ptr");
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if (nsnull == aResult) {
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return NS_ERROR_NULL_POINTER;
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}
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mDeviceContext->GetDeviceSurfaceDimensions(width,height);
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// a xp margin or header/footer space can be added here
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*aResult = height;
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return NS_OK;
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}
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NS_LAYOUT nsresult
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NS_NewPrintContext(nsIPrintContext** aInstancePtrResult)
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{
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if (aInstancePtrResult == nsnull) {
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return NS_ERROR_NULL_POINTER;
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}
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PrintContext *it = new PrintContext;
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if (it == nsnull) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(NS_GET_IID(nsIPrintContext), (void **) aInstancePtrResult);
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}
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