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// Copyright (c) 2011 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_PRINTING_CONTEXT_WIN_H_
#define PRINTING_PRINTING_CONTEXT_WIN_H_
#include <ocidl.h>
#include <commdlg.h>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "build/build_config.h"
#include "printing/printing_context.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/shell_dialogs/print_settings_dialog_win.h"
namespace printing {
class PRINTING_EXPORT PrintingContextWin
: public PrintingContext,
public ui::PrintSettingsDialogWin::Observer {
public:
explicit PrintingContextWin(const std::string& app_locale);
~PrintingContextWin();
// PrintingContext implementation.
virtual void AskUserForSettings(
gfx::NativeView parent_view,
int max_pages,
bool has_selection,
const PrintSettingsCallback& callback) OVERRIDE;
virtual Result UseDefaultSettings() OVERRIDE;
virtual gfx::Size GetPdfPaperSizeDeviceUnits() OVERRIDE;
virtual Result UpdatePrinterSettings(bool external_preview) OVERRIDE;
virtual Result InitWithSettings(const PrintSettings& settings) OVERRIDE;
virtual Result NewDocument(const base::string16& document_name) OVERRIDE;
virtual Result NewPage() OVERRIDE;
virtual Result PageDone() OVERRIDE;
virtual Result DocumentDone() OVERRIDE;
virtual void Cancel() OVERRIDE;
virtual void ReleaseContext() OVERRIDE;
virtual gfx::NativeDrawingContext context() const OVERRIDE;
// PrintSettingsDialogWin::Observer implementation:
virtual void PrintSettingsConfirmed(PRINTDLGEX* dialog_options) OVERRIDE;
virtual void PrintSettingsCancelled(PRINTDLGEX* dialog_options) OVERRIDE;
#if defined(UNIT_TEST) || defined(PRINTING_IMPLEMENTATION)
// Sets a fake PrintDlgEx function pointer in tests.
void SetPrintDialog(HRESULT (__stdcall *print_dialog_func)(LPPRINTDLGEX)) {
print_dialog_func_ = print_dialog_func;
}
#endif // defined(UNIT_TEST)
// Allocates the HDC for a specific DEVMODE.
static bool AllocateContext(const std::wstring& printer_name,
const DEVMODE* dev_mode,
gfx::NativeDrawingContext* context);
private:
// Class that manages the PrintDlgEx() callbacks. This is meant to be a
// temporary object used during the Print... dialog display.
class CallbackHandler;
// Used in response to the user canceling the printing.
static BOOL CALLBACK AbortProc(HDC hdc, int nCode);
// Reads the settings from the selected device context. Updates settings_ and
// its margins.
bool InitializeSettings(const DEVMODE& dev_mode,
const std::wstring& new_device_name,
const PRINTPAGERANGE* ranges,
int number_ranges,
bool selection_only);
// Retrieves the printer's default low-level settings. On Windows, context_ is
// allocated with this call.
bool GetPrinterSettings(HANDLE printer,
const std::wstring& device_name);
// Parses the result of a PRINTDLGEX result.
Result ParseDialogResultEx(const PRINTDLGEX& dialog_options);
Result ParseDialogResult(const PRINTDLG& dialog_options);
// The selected printer context.
HDC context_;
// The dialog box for the time it is shown.
volatile HWND dialog_box_;
// Function pointer that defaults to PrintDlgEx. It can be changed using
// SetPrintDialog() in tests.
HRESULT (__stdcall *print_dialog_func_)(LPPRINTDLGEX);
// Where to notify when the dialog is closed.
PrintSettingsCallback callback_;
// Wrapper around native print dialog that runs it on a background thread.
scoped_refptr<ui::PrintSettingsDialogWin> print_settings_dialog_;
DISALLOW_COPY_AND_ASSIGN(PrintingContextWin);
};
} // namespace printing
#endif // PRINTING_PRINTING_CONTEXT_WIN_H_
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