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