ash/display/display_info.cc

   1 // Copyright (c) 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 #include <string>
   7 #include <vector>
   8
   9 #include "ash/display/display_info.h"
  10 #include "base/logging.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/strings/stringprintf.h"
  14 #include "ui/gfx/display.h"
  15 #include "ui/gfx/size_conversions.h"
  16 #include "ui/gfx/size_f.h"
  17
  18 #if defined(OS_WIN)
  19 #include "ui/aura/window_tree_host.h"
  20 #include "ui/gfx/win/dpi.h"
  21 #endif
  22
  23 namespace ash {
  24
  25 DisplayMode::DisplayMode()
  26     : refresh_rate(0.0f), interlaced(false), native(false) {}
  27
  28 DisplayMode::DisplayMode(const gfx::Size& size,
  29                          float refresh_rate,
  30                          bool interlaced,
  31                          bool native)
  32     : size(size),
  33       refresh_rate(refresh_rate),
  34       interlaced(interlaced),
  35       native(native) {}
  36
  37 // satic
  38 DisplayInfo DisplayInfo::CreateFromSpec(const std::string& spec) {
  39   return CreateFromSpecWithID(spec, gfx::Display::kInvalidDisplayID);
  40 }
  41
  42 // static
  43 DisplayInfo DisplayInfo::CreateFromSpecWithID(const std::string& spec,
  44                                               int64 id) {
  45   // Default bounds for a display.
  46   const int kDefaultHostWindowX = 200;
  47   const int kDefaultHostWindowY = 200;
  48   const int kDefaultHostWindowWidth = 1366;
  49   const int kDefaultHostWindowHeight = 768;
  50
  51   // Use larger than max int to catch overflow early.
  52   static int64 synthesized_display_id = 2200000000LL;
  53
  54 #if defined(OS_WIN)
  55   gfx::Rect bounds_in_native(aura::WindowTreeHost::GetNativeScreenSize());
  56 #else
  57   gfx::Rect bounds_in_native(kDefaultHostWindowX, kDefaultHostWindowY,
  58                              kDefaultHostWindowWidth, kDefaultHostWindowHeight);
  59 #endif
  60   std::string main_spec = spec;
  61
  62   float ui_scale = 1.0f;
  63   std::vector<std::string> parts;
  64   if (Tokenize(main_spec, "@", &parts) == 2) {
  65     double scale_in_double = 0;
  66     if (base::StringToDouble(parts[1], &scale_in_double))
  67       ui_scale = scale_in_double;
  68     main_spec = parts[0];
  69   }
  70
  71   size_t count = Tokenize(main_spec, "/", &parts);
  72   gfx::Display::Rotation rotation(gfx::Display::ROTATE_0);
  73   bool has_overscan = false;
  74   if (count) {
  75     main_spec = parts[0];
  76     if (count >= 2) {
  77       std::string options = parts[1];
  78       for (size_t i = 0; i < options.size(); ++i) {
  79         char c = options[i];
  80         switch (c) {
  81           case 'o':
  82             has_overscan = true;
  83             break;
  84           case 'r':  // rotate 90 degrees to 'right'.
  85             rotation = gfx::Display::ROTATE_90;
  86             break;
  87           case 'u':  // 180 degrees, 'u'pside-down.
  88             rotation = gfx::Display::ROTATE_180;
  89             break;
  90           case 'l':  // rotate 90 degrees to 'left'.
  91             rotation = gfx::Display::ROTATE_270;
  92             break;
  93         }
  94       }
  95     }
  96   }
  97
  98   int x = 0, y = 0, width, height;
  99   float device_scale_factor = 1.0f;
 100   if (sscanf(main_spec.c_str(), "%dx%d*%f",
 101              &width, &height, &device_scale_factor) >= 2 ||
 102       sscanf(main_spec.c_str(), "%d+%d-%dx%d*%f", &x, &y, &width, &height,
 103              &device_scale_factor) >= 4) {
 104     bounds_in_native.SetRect(x, y, width, height);
 105   } else {
 106 #if defined(OS_WIN)
 107     if (gfx::IsHighDPIEnabled()) {
 108       device_scale_factor = gfx::GetModernUIScale();
 109     }
 110 #endif
 111   }
 112
 113   std::vector<DisplayMode> display_modes;
 114   if (Tokenize(main_spec, "#", &parts) == 2) {
 115     size_t native_mode = 0;
 116     int largest_area = -1;
 117     float highest_refresh_rate = -1.0f;
 118     main_spec = parts[0];
 119     std::string resolution_list = parts[1];
 120     count = Tokenize(resolution_list, "|", &parts);
 121     for (size_t i = 0; i < count; ++i) {
 122       std::string resolution = parts[i];
 123       int width, height;
 124       float refresh_rate = 0.0f;
 125       if (sscanf(resolution.c_str(),
 126                  "%dx%d%%%f",
 127                  &width,
 128                  &height,
 129                  &refresh_rate) >= 2) {
 130         if (width * height >= largest_area &&
 131             refresh_rate > highest_refresh_rate) {
 132           // Use mode with largest area and highest refresh rate as native.
 133           largest_area = width * height;
 134           highest_refresh_rate = refresh_rate;
 135           native_mode = i;
 136         }
 137         display_modes.push_back(
 138             DisplayMode(gfx::Size(width, height), refresh_rate, false, false));
 139       }
 140     }
 141     display_modes[native_mode].native = true;
 142   }
 143
 144   if (id == gfx::Display::kInvalidDisplayID)
 145     id = synthesized_display_id++;
 146   DisplayInfo display_info(
 147       id, base::StringPrintf("Display-%d", static_cast<int>(id)), has_overscan);
 148   display_info.set_device_scale_factor(device_scale_factor);
 149   display_info.set_rotation(rotation);
 150   display_info.set_configured_ui_scale(ui_scale);
 151   display_info.SetBounds(bounds_in_native);
 152   display_info.set_display_modes(display_modes);
 153
 154   // To test the overscan, it creates the default 5% overscan.
 155   if (has_overscan) {
 156     int width = bounds_in_native.width() / device_scale_factor / 40;
 157     int height = bounds_in_native.height() / device_scale_factor / 40;
 158     display_info.SetOverscanInsets(gfx::Insets(height, width, height, width));
 159     display_info.UpdateDisplaySize();
 160   }
 161
 162   DVLOG(1) << "DisplayInfoFromSpec info=" << display_info.ToString()
 163            << ", spec=" << spec;
 164   return display_info;
 165 }
 166
 167 DisplayInfo::DisplayInfo()
 168     : id_(gfx::Display::kInvalidDisplayID),
 169       has_overscan_(false),
 170       rotation_(gfx::Display::ROTATE_0),
 171       touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
 172       device_scale_factor_(1.0f),
 173       overscan_insets_in_dip_(0, 0, 0, 0),
 174       configured_ui_scale_(1.0f),
 175       native_(false),
 176       color_profile_(ui::COLOR_PROFILE_STANDARD) {
 177 }
 178
 179 DisplayInfo::DisplayInfo(int64 id,
 180                          const std::string& name,
 181                          bool has_overscan)
 182     : id_(id),
 183       name_(name),
 184       has_overscan_(has_overscan),
 185       rotation_(gfx::Display::ROTATE_0),
 186       touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
 187       device_scale_factor_(1.0f),
 188       overscan_insets_in_dip_(0, 0, 0, 0),
 189       configured_ui_scale_(1.0f),
 190       native_(false),
 191       color_profile_(ui::COLOR_PROFILE_STANDARD) {
 192 }
 193
 194 DisplayInfo::~DisplayInfo() {
 195 }
 196
 197 void DisplayInfo::Copy(const DisplayInfo& native_info) {
 198   DCHECK(id_ == native_info.id_);
 199   name_ = native_info.name_;
 200   has_overscan_ = native_info.has_overscan_;
 201
 202   DCHECK(!native_info.bounds_in_native_.IsEmpty());
 203   bounds_in_native_ = native_info.bounds_in_native_;
 204   size_in_pixel_ = native_info.size_in_pixel_;
 205   device_scale_factor_ = native_info.device_scale_factor_;
 206   display_modes_ = native_info.display_modes_;
 207   touch_support_ = native_info.touch_support_;
 208
 209   // Copy overscan_insets_in_dip_ if it's not empty. This is for test
 210   // cases which use "/o" annotation which sets the overscan inset
 211   // to native, and that overscan has to be propagated. This does not
 212   // happen on the real environment.
 213   if (!native_info.overscan_insets_in_dip_.empty())
 214     overscan_insets_in_dip_ = native_info.overscan_insets_in_dip_;
 215
 216   // Rotation_ and ui_scale_ color_profile_ are given by preference,
 217   // or unit tests. Don't copy if this native_info came from
 218   // DisplayChangeObserver.
 219   if (!native_info.native()) {
 220     rotation_ = native_info.rotation_;
 221     configured_ui_scale_ = native_info.configured_ui_scale_;
 222     color_profile_ = native_info.color_profile();
 223   }
 224
 225   available_color_profiles_ = native_info.available_color_profiles();
 226
 227   // Don't copy insets as it may be given by preference.  |rotation_|
 228   // is treated as a native so that it can be specified in
 229   // |CreateFromSpec|.
 230 }
 231
 232 void DisplayInfo::SetBounds(const gfx::Rect& new_bounds_in_native) {
 233   bounds_in_native_ = new_bounds_in_native;
 234   size_in_pixel_ = new_bounds_in_native.size();
 235   UpdateDisplaySize();
 236 }
 237
 238 float DisplayInfo::GetEffectiveUIScale() const {
 239   if (device_scale_factor_ == 2.0f && configured_ui_scale_ == 2.0f)
 240     return 1.0f;
 241   return configured_ui_scale_;
 242 }
 243
 244 void DisplayInfo::UpdateDisplaySize() {
 245   size_in_pixel_ = bounds_in_native_.size();
 246   if (!overscan_insets_in_dip_.empty()) {
 247     gfx::Insets insets_in_pixel =
 248         overscan_insets_in_dip_.Scale(device_scale_factor_);
 249     size_in_pixel_.Enlarge(-insets_in_pixel.width(), -insets_in_pixel.height());
 250   } else {
 251     overscan_insets_in_dip_.Set(0, 0, 0, 0);
 252   }
 253
 254   if (rotation_ == gfx::Display::ROTATE_90 ||
 255       rotation_ == gfx::Display::ROTATE_270)
 256     size_in_pixel_.SetSize(size_in_pixel_.height(), size_in_pixel_.width());
 257   gfx::SizeF size_f(size_in_pixel_);
 258   size_f.Scale(GetEffectiveUIScale());
 259   size_in_pixel_ = gfx::ToFlooredSize(size_f);
 260 }
 261
 262 void DisplayInfo::SetOverscanInsets(const gfx::Insets& insets_in_dip) {
 263   overscan_insets_in_dip_ = insets_in_dip;
 264 }
 265
 266 gfx::Insets DisplayInfo::GetOverscanInsetsInPixel() const {
 267   return overscan_insets_in_dip_.Scale(device_scale_factor_);
 268 }
 269
 270 std::string DisplayInfo::ToString() const {
 271   int rotation_degree = static_cast<int>(rotation_) * 90;
 272   return base::StringPrintf(
 273       "DisplayInfo[%lld] native bounds=%s, size=%s, scale=%f, "
 274       "overscan=%s, rotation=%d, ui-scale=%f, touchscreen=%s",
 275       static_cast<long long int>(id_),
 276       bounds_in_native_.ToString().c_str(),
 277       size_in_pixel_.ToString().c_str(),
 278       device_scale_factor_,
 279       overscan_insets_in_dip_.ToString().c_str(),
 280       rotation_degree,
 281       configured_ui_scale_,
 282       touch_support_ == gfx::Display::TOUCH_SUPPORT_AVAILABLE
 283           ? "yes"
 284           : touch_support_ == gfx::Display::TOUCH_SUPPORT_UNAVAILABLE
 285                 ? "no"
 286                 : "unknown");
 287 }
 288
 289 std::string DisplayInfo::ToFullString() const {
 290   std::string display_modes_str;
 291   std::vector<DisplayMode>::const_iterator iter = display_modes_.begin();
 292   for (; iter != display_modes_.end(); ++iter) {
 293     if (!display_modes_str.empty())
 294       display_modes_str += ",";
 295     base::StringAppendF(&display_modes_str,
 296                         "(%dx%d@%f%c%s)",
 297                         iter->size.width(),
 298                         iter->size.height(),
 299                         iter->refresh_rate,
 300                         iter->interlaced ? 'I' : 'P',
 301                         iter->native ? "(N)" : "");
 302   }
 303   return ToString() + ", display_modes==" + display_modes_str;
 304 }
 305
 306 void DisplayInfo::SetColorProfile(ui::ColorCalibrationProfile profile) {
 307   if (IsColorProfileAvailable(profile))
 308     color_profile_ = profile;
 309 }
 310
 311 bool DisplayInfo::IsColorProfileAvailable(
 312     ui::ColorCalibrationProfile profile) const {
 313   return std::find(available_color_profiles_.begin(),
 314                    available_color_profiles_.end(),
 315                    profile) != available_color_profiles_.end();
 316 }
 317
 318 }  // namespace ash