printing/printed_document.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "printing/printed_document.h"
   6
   7 #include <algorithm>
   8 #include <set>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/file_util.h"
  13 #include "base/files/file_path.h"
  14 #include "base/i18n/file_util_icu.h"
  15 #include "base/i18n/time_formatting.h"
  16 #include "base/lazy_instance.h"
  17 #include "base/message_loop/message_loop.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/strings/stringprintf.h"
  20 #include "base/strings/utf_string_conversions.h"
  21 #include "printing/page_number.h"
  22 #include "printing/printed_page.h"
  23 #include "printing/printed_pages_source.h"
  24 #include "printing/units.h"
  25 #include "skia/ext/platform_device.h"
  26 #include "ui/gfx/font.h"
  27 #include "ui/gfx/text_elider.h"
  28
  29 namespace {
  30
  31 struct PrintDebugDumpPath {
  32   PrintDebugDumpPath()
  33     : enabled(false) {
  34   }
  35
  36   bool enabled;
  37   base::FilePath debug_dump_path;
  38 };
  39
  40 base::LazyInstance<PrintDebugDumpPath> g_debug_dump_info =
  41     LAZY_INSTANCE_INITIALIZER;
  42
  43 }  // namespace
  44
  45 namespace printing {
  46
  47 PrintedDocument::PrintedDocument(const PrintSettings& settings,
  48                                  PrintedPagesSource* source,
  49                                  int cookie)
  50     : mutable_(source),
  51       immutable_(settings, source, cookie) {
  52
  53   // Records the expected page count if a range is setup.
  54   if (!settings.ranges().empty()) {
  55     // If there is a range, set the number of page
  56     for (unsigned i = 0; i < settings.ranges().size(); ++i) {
  57       const PageRange& range = settings.ranges()[i];
  58       mutable_.expected_page_count_ += range.to - range.from + 1;
  59     }
  60   }
  61 }
  62
  63 PrintedDocument::~PrintedDocument() {
  64 }
  65
  66 void PrintedDocument::SetPage(int page_number,
  67                               Metafile* metafile,
  68                               double shrink,
  69                               const gfx::Size& paper_size,
  70                               const gfx::Rect& page_rect) {
  71   // Notice the page_number + 1, the reason is that this is the value that will
  72   // be shown. Users dislike 0-based counting.
  73   scoped_refptr<PrintedPage> page(
  74       new PrintedPage(page_number + 1,
  75                       metafile,
  76                       paper_size,
  77                       page_rect,
  78                       shrink));
  79   {
  80     base::AutoLock lock(lock_);
  81     mutable_.pages_[page_number] = page;
  82
  83 #if defined(OS_POSIX) && !defined(OS_MACOSX)
  84     if (page_number < mutable_.first_page)
  85       mutable_.first_page = page_number;
  86 #endif
  87   }
  88   DebugDump(*page.get());
  89 }
  90
  91 bool PrintedDocument::GetPage(int page_number,
  92                               scoped_refptr<PrintedPage>* page) {
  93   base::AutoLock lock(lock_);
  94   PrintedPages::const_iterator itr = mutable_.pages_.find(page_number);
  95   if (itr != mutable_.pages_.end()) {
  96     if (itr->second.get()) {
  97       *page = itr->second;
  98       return true;
  99     }
 100   }
 101   return false;
 102 }
 103
 104 bool PrintedDocument::IsComplete() const {
 105   base::AutoLock lock(lock_);
 106   if (!mutable_.page_count_)
 107     return false;
 108   PageNumber page(immutable_.settings_, mutable_.page_count_);
 109   if (page == PageNumber::npos())
 110     return false;
 111
 112   for (; page != PageNumber::npos(); ++page) {
 113 #if defined(OS_WIN) || defined(OS_MACOSX)
 114     const bool metafile_must_be_valid = true;
 115 #elif defined(OS_POSIX)
 116     const bool metafile_must_be_valid = (page.ToInt() == mutable_.first_page);
 117 #endif
 118     PrintedPages::const_iterator itr = mutable_.pages_.find(page.ToInt());
 119     if (itr == mutable_.pages_.end() || !itr->second.get())
 120       return false;
 121     if (metafile_must_be_valid && !itr->second->metafile())
 122       return false;
 123   }
 124   return true;
 125 }
 126
 127 void PrintedDocument::DisconnectSource() {
 128   base::AutoLock lock(lock_);
 129   mutable_.source_ = NULL;
 130 }
 131
 132 uint32 PrintedDocument::MemoryUsage() const {
 133   std::vector< scoped_refptr<PrintedPage> > pages_copy;
 134   {
 135     base::AutoLock lock(lock_);
 136     pages_copy.reserve(mutable_.pages_.size());
 137     PrintedPages::const_iterator end = mutable_.pages_.end();
 138     for (PrintedPages::const_iterator itr = mutable_.pages_.begin();
 139          itr != end; ++itr) {
 140       if (itr->second.get()) {
 141         pages_copy.push_back(itr->second);
 142       }
 143     }
 144   }
 145   uint32 total = 0;
 146   for (size_t i = 0; i < pages_copy.size(); ++i) {
 147     total += pages_copy[i]->metafile()->GetDataSize();
 148   }
 149   return total;
 150 }
 151
 152 void PrintedDocument::set_page_count(int max_page) {
 153   base::AutoLock lock(lock_);
 154   DCHECK_EQ(0, mutable_.page_count_);
 155   mutable_.page_count_ = max_page;
 156   if (immutable_.settings_.ranges().empty()) {
 157     mutable_.expected_page_count_ = max_page;
 158   } else {
 159     // If there is a range, don't bother since expected_page_count_ is already
 160     // initialized.
 161     DCHECK_NE(mutable_.expected_page_count_, 0);
 162   }
 163 }
 164
 165 int PrintedDocument::page_count() const {
 166   base::AutoLock lock(lock_);
 167   return mutable_.page_count_;
 168 }
 169
 170 int PrintedDocument::expected_page_count() const {
 171   base::AutoLock lock(lock_);
 172   return mutable_.expected_page_count_;
 173 }
 174
 175 void PrintedDocument::DebugDump(const PrintedPage& page) {
 176   if (!g_debug_dump_info.Get().enabled)
 177     return;
 178
 179   base::string16 filename;
 180   filename += name();
 181   filename += base::ASCIIToUTF16("_");
 182   filename += base::ASCIIToUTF16(
 183       base::StringPrintf("%02d", page.page_number()));
 184 #if defined(OS_WIN)
 185   filename += base::ASCIIToUTF16("_.emf");
 186   page.metafile()->SaveTo(
 187       g_debug_dump_info.Get().debug_dump_path.Append(filename));
 188 #else  // OS_WIN
 189   filename += base::ASCIIToUTF16("_.pdf");
 190   page.metafile()->SaveTo(
 191       g_debug_dump_info.Get().debug_dump_path.Append(
 192           base::UTF16ToUTF8(filename)));
 193 #endif  // OS_WIN
 194 }
 195
 196 void PrintedDocument::set_debug_dump_path(
 197     const base::FilePath& debug_dump_path) {
 198   g_debug_dump_info.Get().enabled = !debug_dump_path.empty();
 199   g_debug_dump_info.Get().debug_dump_path = debug_dump_path;
 200 }
 201
 202 const base::FilePath& PrintedDocument::debug_dump_path() {
 203   return g_debug_dump_info.Get().debug_dump_path;
 204 }
 205
 206 PrintedDocument::Mutable::Mutable(PrintedPagesSource* source)
 207     : source_(source),
 208       expected_page_count_(0),
 209       page_count_(0) {
 210 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 211   first_page = INT_MAX;
 212 #endif
 213 }
 214
 215 PrintedDocument::Mutable::~Mutable() {
 216 }
 217
 218 PrintedDocument::Immutable::Immutable(const PrintSettings& settings,
 219                                       PrintedPagesSource* source,
 220                                       int cookie)
 221     : settings_(settings),
 222       source_message_loop_(base::MessageLoop::current()),
 223       name_(source->RenderSourceName()),
 224       cookie_(cookie) {
 225 }
 226
 227 PrintedDocument::Immutable::~Immutable() {
 228 }
 229
 230 #if (defined(OS_POSIX) && defined(USE_AURA)) || defined(OS_ANDROID)
 231 // This function is not used on aura linux/chromeos or android.
 232 void PrintedDocument::RenderPrintedPage(const PrintedPage& page,
 233                                         PrintingContext* context) const {
 234 }
 235 #endif
 236
 237 }  // namespace printing