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Unified Diff: chrome/browser/printing/printed_document.h

Issue 149212: Move printing related stuff to the root printing project from the browser pro... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 11 years, 5 months ago
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Index: chrome/browser/printing/printed_document.h
===================================================================
--- chrome/browser/printing/printed_document.h (revision 20026)
+++ chrome/browser/printing/printed_document.h (working copy)
@@ -1,192 +0,0 @@
-// Copyright (c) 2006-2008 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 CHROME_BROWSER_PRINTING_PRINTED_DOCUMENT_H__
-#define CHROME_BROWSER_PRINTING_PRINTED_DOCUMENT_H__
-
-#include <map>
-
-#include "base/lock.h"
-#include "base/ref_counted.h"
-#include "base/scoped_ptr.h"
-#include "chrome/browser/printing/print_settings.h"
-#include "printing/native_metafile.h"
-#include "googleurl/src/gurl.h"
-
-class MessageLoop;
-
-namespace gfx {
-class Font;
-}
-
-namespace printing {
-
-class PrintedPage;
-class PrintedPagesSource;
-
-// A collection of rendered pages. The settings are immutable. If the print
-// settings are changed, a new PrintedDocument must be created.
-// Warning: May be accessed from many threads at the same time. Only one thread
-// will have write access. Sensible functions are protected by a lock.
-// Warning: Once a page is loaded, it cannot be replaced. Pages may be discarded
-// under low memory conditions.
-class PrintedDocument : public base::RefCountedThreadSafe<PrintedDocument> {
- public:
- // The cookie shall be unique and has a specific relationship with its
- // originating source and settings.
- PrintedDocument(const PrintSettings& settings,
- PrintedPagesSource* source,
- int cookie);
- ~PrintedDocument();
-
- // Sets a page's data. 0-based. Takes metafile ownership.
- // Note: locks for a short amount of time.
- void SetPage(int page_number, NativeMetafile* metafile, double shrink);
-
- // Retrieves a page. If the page is not available right now, it
- // requests to have this page be rendered and returns false.
- // Note: locks for a short amount of time.
- bool GetPage(int page_number, scoped_refptr<PrintedPage>* page);
-
- // Draws the page in the context.
- // Note: locks for a short amount of time in debug only.
- void RenderPrintedPage(const PrintedPage& page, HDC context) const;
-
- // Draws the page in the context. If the page is not available right now, it
- // requests to have this page be rendered and returns false.
- // Note: locks for a short amount of time.
- bool RenderPrintedPageNumber(int page_number, HDC context);
-
- // Returns true if all the necessary pages for the settings are already
- // rendered.
- // Note: locks while parsing the whole tree.
- bool IsComplete() const;
-
- // Disconnects the PrintedPage source (PrintedPagesSource). It is done when
- // the source is being destroyed.
- void DisconnectSource();
-
- // Retrieves the current memory usage of the renderer pages.
- // Note: locks for a short amount of time.
- size_t MemoryUsage() const;
-
- // Sets the number of pages in the document to be rendered. Can only be set
- // once.
- // Note: locks for a short amount of time.
- void set_page_count(int max_page);
-
- // Number of pages in the document. Used for headers/footers.
- // Note: locks for a short amount of time.
- int page_count() const;
-
- // Returns the number of expected pages to be rendered. It is a non-linear
- // series if settings().ranges is not empty. It is the same value as
- // document_page_count() otherwise.
- // Note: locks for a short amount of time.
- int expected_page_count() const;
-
- // Getters. All these items are immutable hence thread-safe.
- const PrintSettings& settings() const { return immutable_.settings_; }
- const std::wstring& name() const {
- return immutable_.name_;
- }
- const GURL& url() const { return immutable_.url_; }
- const std::wstring& date() const { return immutable_.date_; }
- const std::wstring& time() const { return immutable_.time_; }
- const int cookie() const { return immutable_.cookie_; }
-
- // Sets a path where to dump printing output files for debugging. If never set
- // no files are generated.
- static void set_debug_dump_path(const std::wstring& debug_dump_path);
-
- static const std::wstring& debug_dump_path();
-
- private:
- // Array of data for each print previewed page.
- typedef std::map<int, scoped_refptr<PrintedPage>> PrintedPages;
-
- // Contains all the mutable stuff. All this stuff MUST be accessed with the
- // lock held.
- struct Mutable {
- Mutable(PrintedPagesSource* source);
-
- // Source that generates the PrintedPage's (i.e. a TabContents). It will be
- // set back to NULL if the source is deleted before this object.
- PrintedPagesSource* source_;
-
- // Contains the pages' representation. This is a collection of PrintedPage.
- // Warning: Lock must be held when accessing this member.
- PrintedPages pages_;
-
- // Number of expected pages to be rendered.
- // Warning: Lock must be held when accessing this member.
- int expected_page_count_;
-
- // The total number of pages in the document.
- int page_count_;
-
- // Shrink done in comparison to desired_dpi.
- double shrink_factor;
- };
-
- // Contains all the immutable stuff. All this stuff can be accessed without
- // any lock held. This is because it can't be changed after the object's
- // construction.
- struct Immutable {
- Immutable(const PrintSettings& settings, PrintedPagesSource* source,
- int cookie);
-
- // Print settings used to generate this document. Immutable.
- PrintSettings settings_;
-
- // Native thread for the render source.
- MessageLoop* source_message_loop_;
-
- // Document name. Immutable.
- std::wstring name_;
-
- // URL that generated this document. Immutable.
- GURL url_;
-
- // The date on which this job started. Immutable.
- std::wstring date_;
-
- // The time at which this job started. Immutable.
- std::wstring time_;
-
- // Cookie to uniquely identify this document. It is used to make sure that a
- // PrintedPage is correctly belonging to the PrintedDocument. Since
- // PrintedPage generation is completely asynchronous, it could be easy to
- // mess up and send the page to the wrong document. It can be viewed as a
- // simpler hash of PrintSettings since a new document is made each time the
- // print settings change.
- int cookie_;
- };
-
- // Prints the headers and footers for one page in the specified context
- // according to the current settings.
- void PrintHeaderFooter(HDC context,
- const PrintedPage& page,
- PageOverlays::HorizontalPosition x,
- PageOverlays::VerticalPosition y,
- const gfx::Font& font) const;
-
- void DebugDump(const PrintedPage& page);
-
- // All writable data member access must be guarded by this lock. Needs to be
- // mutable since it can be acquired from const member functions.
- mutable Lock lock_;
-
- // All the mutable members.
- Mutable mutable_;
-
- // All the immutable members.
- const Immutable immutable_;
-
- DISALLOW_EVIL_CONSTRUCTORS(PrintedDocument);
-};
-
-} // namespace printing
-
-#endif // CHROME_BROWSER_PRINTING_PRINTED_DOCUMENT_H__

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