ash/display/display_layout_store.cc

   1 // Copyright 2013 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 <stdio.h>
   6
   7 #include "ash/ash_switches.h"
   8 #include "ash/display/display_layout_store.h"
   9 #include "ash/display/display_manager.h"
  10 #include "ash/shell.h"
  11 #include "base/command_line.h"
  12 #include "base/logging.h"
  13 #include "ui/gfx/display.h"
  14
  15 namespace ash {
  16
  17 DisplayLayoutStore::DisplayLayoutStore() {
  18   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  19   if (command_line->HasSwitch(switches::kAshSecondaryDisplayLayout)) {
  20     std::string value = command_line->GetSwitchValueASCII(
  21         switches::kAshSecondaryDisplayLayout);
  22     char layout;
  23     int offset = 0;
  24     if (sscanf(value.c_str(), "%c,%d", &layout, &offset) == 2) {
  25       if (layout == 't')
  26         default_display_layout_.position = DisplayLayout::TOP;
  27       else if (layout == 'b')
  28         default_display_layout_.position = DisplayLayout::BOTTOM;
  29       else if (layout == 'r')
  30         default_display_layout_.position = DisplayLayout::RIGHT;
  31       else if (layout == 'l')
  32         default_display_layout_.position = DisplayLayout::LEFT;
  33       default_display_layout_.offset = offset;
  34     }
  35   }
  36 }
  37
  38 DisplayLayoutStore::~DisplayLayoutStore() {
  39 }
  40
  41 void DisplayLayoutStore::SetDefaultDisplayLayout(const DisplayLayout& layout) {
  42   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  43   if (!command_line->HasSwitch(switches::kAshSecondaryDisplayLayout))
  44     default_display_layout_ = layout;
  45 }
  46
  47 void DisplayLayoutStore::RegisterLayoutForDisplayIdPair(
  48     int64 id1,
  49     int64 id2,
  50     const DisplayLayout& layout) {
  51   auto key = std::make_pair(id1, id2);
  52   paired_layouts_[key] = layout;
  53 #if defined(OS_CHROMEOS)
  54   // Force disabling unified desktop if the flag is not set.
  55   if (!switches::UnifiedDesktopEnabled())
  56     paired_layouts_[key].default_unified = false;
  57 #endif
  58 }
  59
  60 DisplayLayout DisplayLayoutStore::GetRegisteredDisplayLayout(
  61     const DisplayIdPair& pair) {
  62   std::map<DisplayIdPair, DisplayLayout>::const_iterator iter =
  63       paired_layouts_.find(pair);
  64   return
  65       iter != paired_layouts_.end() ? iter->second : CreateDisplayLayout(pair);
  66 }
  67
  68 DisplayLayout DisplayLayoutStore::ComputeDisplayLayoutForDisplayIdPair(
  69     const DisplayIdPair& pair) {
  70   DisplayLayout layout = GetRegisteredDisplayLayout(pair);
  71   DCHECK_NE(layout.primary_id, gfx::Display::kInvalidDisplayID);
  72   // Invert if the primary was swapped. If mirrored, first is always
  73   // primary.
  74   return (layout.primary_id == gfx::Display::kInvalidDisplayID ||
  75           pair.first == layout.primary_id) ? layout : layout.Invert();
  76 }
  77
  78 void DisplayLayoutStore::UpdateMultiDisplayState(const DisplayIdPair& pair,
  79                                                  bool mirrored,
  80                                                  bool default_unified) {
  81   if (paired_layouts_.find(pair) == paired_layouts_.end())
  82     CreateDisplayLayout(pair);
  83   paired_layouts_[pair].mirrored = mirrored;
  84   paired_layouts_[pair].default_unified = default_unified;
  85 }
  86
  87 void DisplayLayoutStore::UpdatePrimaryDisplayId(const DisplayIdPair& pair,
  88                                                 int64 display_id) {
  89   if (paired_layouts_.find(pair) == paired_layouts_.end())
  90     CreateDisplayLayout(pair);
  91   paired_layouts_[pair].primary_id = display_id;
  92 }
  93
  94 DisplayLayout DisplayLayoutStore::CreateDisplayLayout(
  95     const DisplayIdPair& pair) {
  96   DisplayLayout layout = default_display_layout_;
  97   layout.primary_id = pair.first;
  98   paired_layouts_[pair] = layout;
  99   return layout;
 100 }
 101
 102 }  // namespace ash