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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PRINTING_BACKEND_WIN_HELPER_H_
#define PRINTING_BACKEND_WIN_HELPER_H_
#pragma once
#include <objidl.h>
#include <winspool.h>
#include <prntvpt.h>
#include "base/string16.h"
// These are helper functions for dealing with Windows Printing.
namespace printing {
// Wrapper class to wrap the XPS APIs (PTxxx APIs). This is needed because these
// APIs are not available by default on XP. We could delayload prntvpt.dll but
// this would mean having to add that to every binary that links with
// printing.lib (which is a LOT of binaries). So choosing the GetProcAddress
// route instead).
class XPSModule {
public:
// All the other methods can ONLY be called after a successful call to Init.
// Init can be called many times and by multiple threads.
static bool Init();
static HRESULT OpenProvider(const string16& printer_name,
DWORD version,
HPTPROVIDER *provider);
static HRESULT GetPrintCapabilities(HPTPROVIDER provider,
IStream *print_ticket,
IStream *capabilities,
BSTR* error_message);
static HRESULT ConvertDevModeToPrintTicket(HPTPROVIDER provider,
ULONG devmode_size_in_bytes,
PDEVMODE devmode,
EPrintTicketScope scope,
IStream* print_ticket);
static HRESULT ConvertPrintTicketToDevMode(
HPTPROVIDER provider,
IStream* print_ticket,
EDefaultDevmodeType base_devmode_type,
EPrintTicketScope scope,
ULONG* devmode_byte_count,
PDEVMODE *devmode,
BSTR* error_message);
static HRESULT MergeAndValidatePrintTicket(HPTPROVIDER provider,
IStream* base_ticket,
IStream* delta_ticket,
EPrintTicketScope scope,
IStream* result_ticket,
BSTR* error_message);
static HRESULT ReleaseMemory(PVOID buffer);
static HRESULT CloseProvider(HPTPROVIDER provider);
private:
XPSModule() { }
static bool InitImpl();
};
// See comments in cc file explaining why we need this.
class ScopedXPSInitializer {
public:
ScopedXPSInitializer();
~ScopedXPSInitializer();
bool initialized() const { return initialized_; }
private:
bool initialized_;
};
} // namespace printing
#endif // PRINTING_BACKEND_WIN_HELPER_H_
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