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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_PRINTED_PAGE_H_
#define PRINTING_PRINTED_PAGE_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "printing/metafile.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
namespace printing {
// Contains the data to reproduce a printed page, either on screen or on
// paper. Once created, this object is immutable. It has no reference to the
// PrintedDocument containing this page.
// Note: May be accessed from many threads at the same time. This is an non
// issue since this object is immutable. The reason is that a page may be
// printed and be displayed at the same time.
class PRINTING_EXPORT PrintedPage
: public base::RefCountedThreadSafe<PrintedPage> {
public:
PrintedPage(int page_number,
scoped_ptr<MetafilePlayer> metafile,
const gfx::Size& page_size,
const gfx::Rect& page_content_rect);
// Getters
int page_number() const { return page_number_; }
const MetafilePlayer* metafile() const;
const gfx::Size& page_size() const { return page_size_; }
const gfx::Rect& page_content_rect() const { return page_content_rect_; }
#if defined(OS_WIN)
void set_shrink_factor(float shrink_factor) {
shrink_factor_ = shrink_factor;
}
float shrink_factor() const { return shrink_factor_; }
#endif // OS_WIN
// Get page content rect adjusted based on
// http://dev.w3.org/csswg/css3-page/#positioning-page-box
void GetCenteredPageContentRect(const gfx::Size& paper_size,
gfx::Rect* content_rect) const;
private:
friend class base::RefCountedThreadSafe<PrintedPage>;
~PrintedPage();
// Page number inside the printed document.
const int page_number_;
// Actual paint data.
const scoped_ptr<MetafilePlayer> metafile_;
#if defined(OS_WIN)
// Shrink done in comparison to desired_dpi.
float shrink_factor_;
#endif // OS_WIN
// The physical page size. To support multiple page formats inside on print
// job.
const gfx::Size page_size_;
// The printable area of the page.
const gfx::Rect page_content_rect_;
DISALLOW_COPY_AND_ASSIGN(PrintedPage);
};
} // namespace printing
#endif // PRINTING_PRINTED_PAGE_H_
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