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