printing/page_setup_unittest.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/page_setup.h"
   6
   7 #include <stdlib.h>
   8 #include <time.h>
   9
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 TEST(PageSetupTest, Random) {
  13   time_t seed = time(NULL);
  14   int kMax = 10;
  15   srand(static_cast<unsigned>(seed));
  16
  17   // Margins.
  18   printing::PageMargins margins;
  19   margins.header = rand() % kMax;
  20   margins.footer = rand() % kMax;
  21   margins.left = rand() % kMax;
  22   margins.top = rand() % kMax;
  23   margins.right = rand() % kMax;
  24   margins.bottom = rand() % kMax;
  25   int kTextHeight = rand() % kMax;
  26
  27   // Page description.
  28   gfx::Size page_size(100 + rand() % kMax, 200 + rand() % kMax);
  29   gfx::Rect printable_area(rand() % kMax, rand() % kMax, 0, 0);
  30   printable_area.set_width(page_size.width() - (rand() % kMax) -
  31                            printable_area.x());
  32   printable_area.set_height(page_size.height() - (rand() % kMax) -
  33                             printable_area.y());
  34
  35   // Make the calculations.
  36   printing::PageSetup setup;
  37   setup.SetRequestedMargins(margins);
  38   setup.Init(page_size, printable_area, kTextHeight);
  39
  40   // Calculate the effective margins.
  41   printing::PageMargins effective_margins;
  42   effective_margins.header = std::max(margins.header, printable_area.y());
  43   effective_margins.left = std::max(margins.left, printable_area.x());
  44   effective_margins.top = std::max(margins.top,
  45                                    effective_margins.header + kTextHeight);
  46   effective_margins.footer = std::max(margins.footer,
  47                                       page_size.height() -
  48                                           printable_area.bottom());
  49   effective_margins.right = std::max(margins.right,
  50                                       page_size.width() -
  51                                           printable_area.right());
  52   effective_margins.bottom = std::max(margins.bottom,
  53                                       effective_margins.footer  + kTextHeight);
  54
  55   // Calculate the overlay area.
  56   gfx::Rect overlay_area(effective_margins.left, effective_margins.header,
  57                          page_size.width() - effective_margins.right -
  58                             effective_margins.left,
  59                          page_size.height() - effective_margins.footer -
  60                             effective_margins.header);
  61
  62   // Calculate the content area.
  63   gfx::Rect content_area(overlay_area.x(),
  64                          effective_margins.top,
  65                          overlay_area.width(),
  66                          page_size.height() - effective_margins.bottom -
  67                              effective_margins.top);
  68
  69   // Test values.
  70   EXPECT_EQ(page_size, setup.physical_size()) << seed << " " <<
  71       page_size.ToString() << " " << printable_area.ToString() <<
  72       " " << kTextHeight;
  73   EXPECT_EQ(overlay_area, setup.overlay_area()) << seed << " " <<
  74       page_size.ToString() << " " << printable_area.ToString() <<
  75       " " << kTextHeight;
  76   EXPECT_EQ(content_area, setup.content_area()) << seed << " " <<
  77       page_size.ToString() << " " << printable_area.ToString() <<
  78       " " << kTextHeight;
  79
  80   EXPECT_EQ(effective_margins.header, setup.effective_margins().header) <<
  81       seed << " " << page_size.ToString() << " " << printable_area.ToString() <<
  82       " " << kTextHeight;
  83   EXPECT_EQ(effective_margins.footer, setup.effective_margins().footer) <<
  84       seed << " " << page_size.ToString() << " " << printable_area.ToString() <<
  85       " " << kTextHeight;
  86   EXPECT_EQ(effective_margins.left, setup.effective_margins().left) << seed <<
  87       " " << page_size.ToString() << " " << printable_area.ToString() <<
  88       " " << kTextHeight;
  89   EXPECT_EQ(effective_margins.top, setup.effective_margins().top) << seed <<
  90       " " << page_size.ToString() << " " << printable_area.ToString() <<
  91       " " << kTextHeight;
  92   EXPECT_EQ(effective_margins.right, setup.effective_margins().right) << seed <<
  93       " " << page_size.ToString() << " " << printable_area.ToString() <<
  94       " " << kTextHeight;
  95   EXPECT_EQ(effective_margins.bottom, setup.effective_margins().bottom) <<
  96       seed << " " << page_size.ToString() << " " << printable_area.ToString() <<
  97        " " << kTextHeight;
  98 }
  99
 100 TEST(PageSetupTest, HardCoded) {
 101   // Margins.
 102   printing::PageMargins margins;
 103   margins.header = 2;
 104   margins.footer = 2;
 105   margins.left = 4;
 106   margins.top = 4;
 107   margins.right = 4;
 108   margins.bottom = 4;
 109   int kTextHeight = 3;
 110
 111   // Page description.
 112   gfx::Size page_size(100, 100);
 113   gfx::Rect printable_area(3, 3, 94, 94);
 114
 115   // Make the calculations.
 116   printing::PageSetup setup;
 117   setup.SetRequestedMargins(margins);
 118   setup.Init(page_size, printable_area, kTextHeight);
 119
 120   // Calculate the effective margins.
 121   printing::PageMargins effective_margins;
 122   effective_margins.header = 3;
 123   effective_margins.left = 4;
 124   effective_margins.top = 6;
 125   effective_margins.footer = 3;
 126   effective_margins.right = 4;
 127   effective_margins.bottom = 6;
 128
 129   // Calculate the overlay area.
 130   gfx::Rect overlay_area(4, 3, 92, 94);
 131
 132   // Calculate the content area.
 133   gfx::Rect content_area(4, 6, 92, 88);
 134
 135   // Test values.
 136   EXPECT_EQ(page_size, setup.physical_size()) << " " << page_size.ToString() <<
 137       " " << printable_area.ToString() << " " << kTextHeight;
 138   EXPECT_EQ(overlay_area, setup.overlay_area()) << " " <<
 139       page_size.ToString() <<  " " << printable_area.ToString() <<
 140       " " << kTextHeight;
 141   EXPECT_EQ(content_area, setup.content_area()) << " " <<
 142       page_size.ToString() <<  " " << printable_area.ToString() <<
 143       " " << kTextHeight;
 144
 145   EXPECT_EQ(effective_margins.header, setup.effective_margins().header) <<
 146       " " << page_size.ToString() << " " <<
 147       printable_area.ToString() << " " << kTextHeight;
 148   EXPECT_EQ(effective_margins.footer, setup.effective_margins().footer) <<
 149       " " << page_size.ToString() << " " << printable_area.ToString() <<
 150       " " << kTextHeight;
 151   EXPECT_EQ(effective_margins.left, setup.effective_margins().left) <<
 152       " " << page_size.ToString() << " " << printable_area.ToString() <<
 153       " " << kTextHeight;
 154   EXPECT_EQ(effective_margins.top, setup.effective_margins().top) <<
 155       " " << page_size.ToString() << " " << printable_area.ToString() <<
 156       " " << kTextHeight;
 157   EXPECT_EQ(effective_margins.right, setup.effective_margins().right) <<
 158       " " << page_size.ToString() << " " << printable_area.ToString() <<
 159       " " << kTextHeight;
 160   EXPECT_EQ(effective_margins.bottom, setup.effective_margins().bottom) <<
 161       " " << page_size.ToString() << " " << printable_area.ToString() <<
 162       " " << kTextHeight;
 163 }