extensions/browser/api/system_display/display_info_provider.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 "extensions/browser/api/system_display/display_info_provider.h"
   6
   7 #include "base/strings/string_number_conversions.h"
   8 #include "extensions/common/api/system_display.h"
   9 #include "ui/gfx/display.h"
  10 #include "ui/gfx/screen.h"
  11
  12 namespace extensions {
  13
  14 namespace {
  15
  16 // Created on demand and will leak when the process exits.
  17 DisplayInfoProvider* g_display_info_provider = NULL;
  18
  19 // Converts Rotation enum to integer.
  20 int RotationToDegrees(gfx::Display::Rotation rotation) {
  21   switch (rotation) {
  22     case gfx::Display::ROTATE_0:
  23       return 0;
  24     case gfx::Display::ROTATE_90:
  25       return 90;
  26     case gfx::Display::ROTATE_180:
  27       return 180;
  28     case gfx::Display::ROTATE_270:
  29       return 270;
  30   }
  31   return 0;
  32 }
  33
  34 // Creates new DisplayUnitInfo struct for |display|.
  35 core_api::system_display::DisplayUnitInfo* CreateDisplayUnitInfo(
  36     const gfx::Display& display,
  37     int64 primary_display_id) {
  38   core_api::system_display::DisplayUnitInfo* unit =
  39       new core_api::system_display::DisplayUnitInfo();
  40   const gfx::Rect& bounds = display.bounds();
  41   const gfx::Rect& work_area = display.work_area();
  42   unit->id = base::Int64ToString(display.id());
  43   unit->is_primary = (display.id() == primary_display_id);
  44   unit->is_internal = display.IsInternal();
  45   unit->is_enabled = true;
  46   unit->rotation = RotationToDegrees(display.rotation());
  47   unit->bounds.left = bounds.x();
  48   unit->bounds.top = bounds.y();
  49   unit->bounds.width = bounds.width();
  50   unit->bounds.height = bounds.height();
  51   unit->work_area.left = work_area.x();
  52   unit->work_area.top = work_area.y();
  53   unit->work_area.width = work_area.width();
  54   unit->work_area.height = work_area.height();
  55   return unit;
  56 }
  57
  58 }  // namespace
  59
  60 DisplayInfoProvider::~DisplayInfoProvider() {
  61 }
  62
  63 // static
  64 DisplayInfoProvider* DisplayInfoProvider::Get() {
  65   if (g_display_info_provider == NULL)
  66     g_display_info_provider = DisplayInfoProvider::Create();
  67   return g_display_info_provider;
  68 }
  69
  70 // static
  71 void DisplayInfoProvider::InitializeForTesting(
  72     DisplayInfoProvider* display_info_provider) {
  73   DCHECK(display_info_provider);
  74   g_display_info_provider = display_info_provider;
  75 }
  76
  77 DisplayInfo DisplayInfoProvider::GetAllDisplaysInfo() {
  78   // TODO(scottmg): Native is wrong http://crbug.com/133312
  79   gfx::Screen* screen = gfx::Screen::GetNativeScreen();
  80   int64 primary_id = screen->GetPrimaryDisplay().id();
  81   std::vector<gfx::Display> displays = screen->GetAllDisplays();
  82   DisplayInfo all_displays;
  83   for (const gfx::Display& display : displays) {
  84     linked_ptr<core_api::system_display::DisplayUnitInfo> unit(
  85         CreateDisplayUnitInfo(display, primary_id));
  86     UpdateDisplayUnitInfoForPlatform(display, unit.get());
  87     all_displays.push_back(unit);
  88   }
  89   return all_displays;
  90 }
  91
  92 DisplayInfoProvider::DisplayInfoProvider() {
  93 }
  94
  95 }  // namespace extensions