ash/display/display_info.cc - chromium/src - Git at Google

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include <stdio.h>
 #include <string>
 #include <vector>

 #include "ash/display/display_info.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/geometry/size_f.h"

 #if defined(OS_WIN)
 #include "ui/aura/window_tree_host.h"
 #include "ui/gfx/win/dpi.h"
 #endif

 namespace ash {
 namespace {

 bool use_125_dsf_for_ui_scaling = false;

 // Check the content of |spec| and fill |bounds| and |device_scale_factor|.
 // Returns true when |bounds| is found.
 bool GetDisplayBounds(
     const std::string& spec, gfx::Rect* bounds, float* device_scale_factor) {
   int width = 0;
   int height = 0;
   int x = 0;
   int y = 0;
   if (sscanf(spec.c_str(), "%dx%d*%f",
              &width, &height, device_scale_factor) >= 2 ||
       sscanf(spec.c_str(), "%d+%d-%dx%d*%f", &x, &y, &width, &height,
              device_scale_factor) >= 4) {
     bounds->SetRect(x, y, width, height);
     return true;
   }
   return false;
 }

 // Display mode list is sorted by:
 //  * the area in pixels in ascending order
 //  * refresh rate in descending order
 struct DisplayModeSorter {
   explicit DisplayModeSorter(bool is_internal) : is_internal(is_internal) {}

   bool operator()(const DisplayMode& a, const DisplayMode& b) {
     gfx::Size size_a_dip = a.GetSizeInDIP(is_internal);
     gfx::Size size_b_dip = b.GetSizeInDIP(is_internal);
     if (size_a_dip.GetArea() == size_b_dip.GetArea())
       return (a.refresh_rate > b.refresh_rate);
     return (size_a_dip.GetArea() < size_b_dip.GetArea());
   }

   bool is_internal;
 };

 }  // namespace

 DisplayMode::DisplayMode()
     : refresh_rate(0.0f),
       interlaced(false),
       native(false),
       ui_scale(1.0f),
       device_scale_factor(1.0f) {}

 DisplayMode::DisplayMode(const gfx::Size& size,
                          float refresh_rate,
                          bool interlaced,
                          bool native)
     : size(size),
       refresh_rate(refresh_rate),
       interlaced(interlaced),
       native(native),
       ui_scale(1.0f),
       device_scale_factor(1.0f) {}

 gfx::Size DisplayMode::GetSizeInDIP(bool is_internal) const {
   gfx::SizeF size_dip(size);
   size_dip.Scale(ui_scale);
   // DSF=1.25 is special. The screen is drawn with DSF=1.25 in some mode but it
   // doesn't affect the screen size computation.
   if (!(use_125_dsf_for_ui_scaling && is_internal) ||
       device_scale_factor != 1.25f) {
     size_dip.Scale(1.0f / device_scale_factor);
   }
   return gfx::ToFlooredSize(size_dip);
 }

 bool DisplayMode::IsEquivalent(const DisplayMode& other) const {
   const float kEpsilon = 0.0001f;
   return size == other.size &&
       std::abs(ui_scale - other.ui_scale) < kEpsilon &&
       std::abs(device_scale_factor - other.device_scale_factor) < kEpsilon;
 }

 // satic
 DisplayInfo DisplayInfo::CreateFromSpec(const std::string& spec) {
   return CreateFromSpecWithID(spec, gfx::Display::kInvalidDisplayID);
 }

 // static
 void DisplayInfo::SetUse125DSFForUIScaling(bool enable) {
   use_125_dsf_for_ui_scaling = enable;
 }

 // static
 DisplayInfo DisplayInfo::CreateFromSpecWithID(const std::string& spec,
                                               int64 id) {
   // Use larger than max int to catch overflow early.
   static int64 synthesized_display_id = 2200000000LL;

 #if defined(OS_WIN)
   gfx::Rect bounds_in_native(aura::WindowTreeHost::GetNativeScreenSize());
 #else
   // Default bounds for a display.
   const int kDefaultHostWindowX = 200;
   const int kDefaultHostWindowY = 200;
   const int kDefaultHostWindowWidth = 1366;
   const int kDefaultHostWindowHeight = 768;
   gfx::Rect bounds_in_native(kDefaultHostWindowX, kDefaultHostWindowY,
                              kDefaultHostWindowWidth, kDefaultHostWindowHeight);
 #endif
   std::string main_spec = spec;

   float ui_scale = 1.0f;
   std::vector<std::string> parts;
   if (Tokenize(main_spec, "@", &parts) == 2) {
     double scale_in_double = 0;
     if (base::StringToDouble(parts[1], &scale_in_double))
       ui_scale = scale_in_double;
     main_spec = parts[0];
   }

   size_t count = Tokenize(main_spec, "/", &parts);
   gfx::Display::Rotation rotation(gfx::Display::ROTATE_0);
   bool has_overscan = false;
   if (count) {
     main_spec = parts[0];
     if (count >= 2) {
       std::string options = parts[1];
       for (size_t i = 0; i < options.size(); ++i) {
         char c = options[i];
         switch (c) {
           case 'o':
             has_overscan = true;
             break;
           case 'r':  // rotate 90 degrees to 'right'.
             rotation = gfx::Display::ROTATE_90;
             break;
           case 'u':  // 180 degrees, 'u'pside-down.
             rotation = gfx::Display::ROTATE_180;
             break;
           case 'l':  // rotate 90 degrees to 'left'.
             rotation = gfx::Display::ROTATE_270;
             break;
         }
       }
     }
   }

   float device_scale_factor = 1.0f;
   if (!GetDisplayBounds(main_spec, &bounds_in_native, &device_scale_factor)) {
 #if defined(OS_WIN)
     device_scale_factor = gfx::GetDPIScale();
 #endif
   }

   std::vector<DisplayMode> display_modes;
   if (Tokenize(main_spec, "#", &parts) == 2) {
     size_t native_mode = 0;
     int largest_area = -1;
     float highest_refresh_rate = -1.0f;
     main_spec = parts[0];
     std::string resolution_list = parts[1];
     count = Tokenize(resolution_list, "|", &parts);
     for (size_t i = 0; i < count; ++i) {
       DisplayMode mode;
       gfx::Rect mode_bounds;
       std::vector<std::string> resolution;
       Tokenize(parts[i], "%", &resolution);
       if (GetDisplayBounds(
               resolution[0], &mode_bounds, &mode.device_scale_factor)) {
         mode.size = mode_bounds.size();
         if (resolution.size() > 1)
           sscanf(resolution[1].c_str(), "%f", &mode.refresh_rate);
         if (mode.size.GetArea() >= largest_area &&
             mode.refresh_rate > highest_refresh_rate) {
           // Use mode with largest area and highest refresh rate as native.
           largest_area = mode.size.GetArea();
           highest_refresh_rate = mode.refresh_rate;
           native_mode = i;
         }
         display_modes.push_back(mode);
       }
     }
     display_modes[native_mode].native = true;
   }

   if (id == gfx::Display::kInvalidDisplayID)
     id = synthesized_display_id++;
   DisplayInfo display_info(
       id, base::StringPrintf("Display-%d", static_cast<int>(id)), has_overscan);
   display_info.set_device_scale_factor(device_scale_factor);
   display_info.set_rotation(rotation);
   display_info.set_configured_ui_scale(ui_scale);
   display_info.SetBounds(bounds_in_native);
   display_info.SetDisplayModes(display_modes);

   // To test the overscan, it creates the default 5% overscan.
   if (has_overscan) {
     int width = bounds_in_native.width() / device_scale_factor / 40;
     int height = bounds_in_native.height() / device_scale_factor / 40;
     display_info.SetOverscanInsets(gfx::Insets(height, width, height, width));
     display_info.UpdateDisplaySize();
   }

   DVLOG(1) << "DisplayInfoFromSpec info=" << display_info.ToString()
            << ", spec=" << spec;
   return display_info;
 }

 DisplayInfo::DisplayInfo()
     : id_(gfx::Display::kInvalidDisplayID),
       has_overscan_(false),
       rotation_(gfx::Display::ROTATE_0),
       touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
       touch_device_id_(0),
       device_scale_factor_(1.0f),
       overscan_insets_in_dip_(0, 0, 0, 0),
       configured_ui_scale_(1.0f),
       native_(false),
       is_aspect_preserving_scaling_(false),
       clear_overscan_insets_(false),
       color_profile_(ui::COLOR_PROFILE_STANDARD) {
 }

 DisplayInfo::DisplayInfo(int64 id,
                          const std::string& name,
                          bool has_overscan)
     : id_(id),
       name_(name),
       has_overscan_(has_overscan),
       rotation_(gfx::Display::ROTATE_0),
       touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
       touch_device_id_(0),
       device_scale_factor_(1.0f),
       overscan_insets_in_dip_(0, 0, 0, 0),
       configured_ui_scale_(1.0f),
       native_(false),
       is_aspect_preserving_scaling_(false),
       clear_overscan_insets_(false),
       color_profile_(ui::COLOR_PROFILE_STANDARD) {
 }

 DisplayInfo::~DisplayInfo() {
 }

 void DisplayInfo::Copy(const DisplayInfo& native_info) {
   DCHECK(id_ == native_info.id_);
   name_ = native_info.name_;
   has_overscan_ = native_info.has_overscan_;

   touch_support_ = native_info.touch_support_;
   touch_device_id_ = native_info.touch_device_id_;
   device_scale_factor_ = native_info.device_scale_factor_;
   DCHECK(!native_info.bounds_in_native_.IsEmpty());
   bounds_in_native_ = native_info.bounds_in_native_;
   size_in_pixel_ = native_info.size_in_pixel_;
   is_aspect_preserving_scaling_ = native_info.is_aspect_preserving_scaling_;
   display_modes_ = native_info.display_modes_;
   available_color_profiles_ = native_info.available_color_profiles_;

   // Rotation, ui_scale, color_profile and overscan are given by preference,
   // or unit tests. Don't copy if this native_info came from
   // DisplayChangeObserver.
   if (!native_info.native()) {
     // Update the overscan_insets_in_dip_ either if the inset should be
     // cleared, or has non empty insts.
     if (native_info.clear_overscan_insets())
       overscan_insets_in_dip_.Set(0, 0, 0, 0);
     else if (!native_info.overscan_insets_in_dip_.empty())
       overscan_insets_in_dip_ = native_info.overscan_insets_in_dip_;

     rotation_ = native_info.rotation_;
     configured_ui_scale_ = native_info.configured_ui_scale_;
     color_profile_ = native_info.color_profile();
   }
 }

 void DisplayInfo::SetBounds(const gfx::Rect& new_bounds_in_native) {
   bounds_in_native_ = new_bounds_in_native;
   size_in_pixel_ = new_bounds_in_native.size();
   UpdateDisplaySize();
 }

 float DisplayInfo::GetEffectiveDeviceScaleFactor() const {
   if (Use125DSFRorUIScaling() && device_scale_factor_ == 1.25f)
     return (configured_ui_scale_ == 0.8f) ? 1.25f : 1.0f;
   if (device_scale_factor_ == configured_ui_scale_)
     return 1.0f;
   return device_scale_factor_;
 }

 float DisplayInfo::GetEffectiveUIScale() const {
   if (Use125DSFRorUIScaling() && device_scale_factor_ == 1.25f)
     return (configured_ui_scale_ == 0.8f) ? 1.0f : configured_ui_scale_;
   if (device_scale_factor_ == configured_ui_scale_)
     return 1.0f;
   return configured_ui_scale_;
 }

 void DisplayInfo::UpdateDisplaySize() {
   size_in_pixel_ = bounds_in_native_.size();
   if (!overscan_insets_in_dip_.empty()) {
     gfx::Insets insets_in_pixel =
         overscan_insets_in_dip_.Scale(device_scale_factor_);
     size_in_pixel_.Enlarge(-insets_in_pixel.width(), -insets_in_pixel.height());
   } else {
     overscan_insets_in_dip_.Set(0, 0, 0, 0);
   }

   if (rotation_ == gfx::Display::ROTATE_90 ||
       rotation_ == gfx::Display::ROTATE_270)
     size_in_pixel_.SetSize(size_in_pixel_.height(), size_in_pixel_.width());
   gfx::SizeF size_f(size_in_pixel_);
   size_f.Scale(GetEffectiveUIScale());
   size_in_pixel_ = gfx::ToFlooredSize(size_f);
 }

 void DisplayInfo::SetOverscanInsets(const gfx::Insets& insets_in_dip) {
   overscan_insets_in_dip_ = insets_in_dip;
 }

 gfx::Insets DisplayInfo::GetOverscanInsetsInPixel() const {
   return overscan_insets_in_dip_.Scale(device_scale_factor_);
 }

 void DisplayInfo::SetDisplayModes(
     const std::vector<DisplayMode>& display_modes) {
   display_modes_ = display_modes;
   std::sort(display_modes_.begin(), display_modes_.end(),
             DisplayModeSorter(id_ == gfx::Display::InternalDisplayId()));
 }

 gfx::Size DisplayInfo::GetNativeModeSize() const {
   for (size_t i = 0; i < display_modes_.size(); ++i) {
     if (display_modes_[i].native)
       return display_modes_[i].size;
   }

   return gfx::Size();
 }

 std::string DisplayInfo::ToString() const {
   int rotation_degree = static_cast<int>(rotation_) * 90;
   return base::StringPrintf(
       "DisplayInfo[%lld] native bounds=%s, size=%s, scale=%f, "
       "overscan=%s, rotation=%d, ui-scale=%f, touchscreen=%s, "
       "touch-device-id=%d",
       static_cast<long long int>(id_),
       bounds_in_native_.ToString().c_str(),
       size_in_pixel_.ToString().c_str(),
       device_scale_factor_,
       overscan_insets_in_dip_.ToString().c_str(),
       rotation_degree,
       configured_ui_scale_,
       touch_support_ == gfx::Display::TOUCH_SUPPORT_AVAILABLE
           ? "yes"
           : touch_support_ == gfx::Display::TOUCH_SUPPORT_UNAVAILABLE
                 ? "no"
                 : "unknown",
       touch_device_id_);
 }

 std::string DisplayInfo::ToFullString() const {
   std::string display_modes_str;
   std::vector<DisplayMode>::const_iterator iter = display_modes_.begin();
   for (; iter != display_modes_.end(); ++iter) {
     if (!display_modes_str.empty())
       display_modes_str += ",";
     base::StringAppendF(&display_modes_str,
                         "(%dx%d@%f%c%s)",
                         iter->size.width(),
                         iter->size.height(),
                         iter->refresh_rate,
                         iter->interlaced ? 'I' : 'P',
                         iter->native ? "(N)" : "");
   }
   return ToString() + ", display_modes==" + display_modes_str;
 }

 void DisplayInfo::SetColorProfile(ui::ColorCalibrationProfile profile) {
   if (IsColorProfileAvailable(profile))
     color_profile_ = profile;
 }

 bool DisplayInfo::IsColorProfileAvailable(
     ui::ColorCalibrationProfile profile) const {
   return std::find(available_color_profiles_.begin(),
                    available_color_profiles_.end(),
                    profile) != available_color_profiles_.end();
 }

 bool DisplayInfo::Use125DSFRorUIScaling() const {
   return use_125_dsf_for_ui_scaling && id_ == gfx::Display::InternalDisplayId();
 }

 }  // namespace ash
	// Copyright (c) 2013 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include <stdio.h>
	#include <string>
	#include <vector>

	#include "ash/display/display_info.h"
	#include "base/logging.h"
	#include "base/strings/string_number_conversions.h"
	#include "base/strings/string_util.h"
	#include "base/strings/stringprintf.h"
	#include "ui/gfx/display.h"
	#include "ui/gfx/geometry/size_conversions.h"
	#include "ui/gfx/geometry/size_f.h"

	#if defined(OS_WIN)
	#include "ui/aura/window_tree_host.h"
	#include "ui/gfx/win/dpi.h"
	#endif

	namespace ash {
	namespace {

	bool use_125_dsf_for_ui_scaling = false;

	// Check the content of \|spec\| and fill \|bounds\| and \|device_scale_factor\|.
	// Returns true when \|bounds\| is found.
	bool GetDisplayBounds(
	const std::string& spec, gfx::Rect* bounds, float* device_scale_factor) {
	int width = 0;
	int height = 0;
	int x = 0;
	int y = 0;
	if (sscanf(spec.c_str(), "%dx%d*%f",
	&width, &height, device_scale_factor) >= 2 \|\|
	sscanf(spec.c_str(), "%d+%d-%dx%d*%f", &x, &y, &width, &height,
	device_scale_factor) >= 4) {
	bounds->SetRect(x, y, width, height);
	return true;
	}
	return false;
	}

	// Display mode list is sorted by:
	// * the area in pixels in ascending order
	// * refresh rate in descending order
	struct DisplayModeSorter {
	explicit DisplayModeSorter(bool is_internal) : is_internal(is_internal) {}

	bool operator()(const DisplayMode& a, const DisplayMode& b) {
	gfx::Size size_a_dip = a.GetSizeInDIP(is_internal);
	gfx::Size size_b_dip = b.GetSizeInDIP(is_internal);
	if (size_a_dip.GetArea() == size_b_dip.GetArea())
	return (a.refresh_rate > b.refresh_rate);
	return (size_a_dip.GetArea() < size_b_dip.GetArea());
	}

	bool is_internal;
	};

	} // namespace

	DisplayMode::DisplayMode()
	: refresh_rate(0.0f),
	interlaced(false),
	native(false),
	ui_scale(1.0f),
	device_scale_factor(1.0f) {}

	DisplayMode::DisplayMode(const gfx::Size& size,
	float refresh_rate,
	bool interlaced,
	bool native)
	: size(size),
	refresh_rate(refresh_rate),
	interlaced(interlaced),
	native(native),
	ui_scale(1.0f),
	device_scale_factor(1.0f) {}

	gfx::Size DisplayMode::GetSizeInDIP(bool is_internal) const {
	gfx::SizeF size_dip(size);
	size_dip.Scale(ui_scale);
	// DSF=1.25 is special. The screen is drawn with DSF=1.25 in some mode but it
	// doesn't affect the screen size computation.
	if (!(use_125_dsf_for_ui_scaling && is_internal) \|\|
	device_scale_factor != 1.25f) {
	size_dip.Scale(1.0f / device_scale_factor);
	}
	return gfx::ToFlooredSize(size_dip);
	}

	bool DisplayMode::IsEquivalent(const DisplayMode& other) const {
	const float kEpsilon = 0.0001f;
	return size == other.size &&
	std::abs(ui_scale - other.ui_scale) < kEpsilon &&
	std::abs(device_scale_factor - other.device_scale_factor) < kEpsilon;
	}

	// satic
	DisplayInfo DisplayInfo::CreateFromSpec(const std::string& spec) {
	return CreateFromSpecWithID(spec, gfx::Display::kInvalidDisplayID);
	}

	// static
	void DisplayInfo::SetUse125DSFForUIScaling(bool enable) {
	use_125_dsf_for_ui_scaling = enable;
	}

	// static
	DisplayInfo DisplayInfo::CreateFromSpecWithID(const std::string& spec,
	int64 id) {
	// Use larger than max int to catch overflow early.
	static int64 synthesized_display_id = 2200000000LL;

	#if defined(OS_WIN)
	gfx::Rect bounds_in_native(aura::WindowTreeHost::GetNativeScreenSize());
	#else
	// Default bounds for a display.
	const int kDefaultHostWindowX = 200;
	const int kDefaultHostWindowY = 200;
	const int kDefaultHostWindowWidth = 1366;
	const int kDefaultHostWindowHeight = 768;
	gfx::Rect bounds_in_native(kDefaultHostWindowX, kDefaultHostWindowY,
	kDefaultHostWindowWidth, kDefaultHostWindowHeight);
	#endif
	std::string main_spec = spec;

	float ui_scale = 1.0f;
	std::vector<std::string> parts;
	if (Tokenize(main_spec, "@", &parts) == 2) {
	double scale_in_double = 0;
	if (base::StringToDouble(parts[1], &scale_in_double))
	ui_scale = scale_in_double;
	main_spec = parts[0];
	}

	size_t count = Tokenize(main_spec, "/", &parts);
	gfx::Display::Rotation rotation(gfx::Display::ROTATE_0);
	bool has_overscan = false;
	if (count) {
	main_spec = parts[0];
	if (count >= 2) {
	std::string options = parts[1];
	for (size_t i = 0; i < options.size(); ++i) {
	char c = options[i];
	switch (c) {
	case 'o':
	has_overscan = true;
	break;
	case 'r': // rotate 90 degrees to 'right'.
	rotation = gfx::Display::ROTATE_90;
	break;
	case 'u': // 180 degrees, 'u'pside-down.
	rotation = gfx::Display::ROTATE_180;
	break;
	case 'l': // rotate 90 degrees to 'left'.
	rotation = gfx::Display::ROTATE_270;
	break;
	}
	}
	}
	}

	float device_scale_factor = 1.0f;
	if (!GetDisplayBounds(main_spec, &bounds_in_native, &device_scale_factor)) {
	#if defined(OS_WIN)
	device_scale_factor = gfx::GetDPIScale();
	#endif
	}

	std::vector<DisplayMode> display_modes;
	if (Tokenize(main_spec, "#", &parts) == 2) {
	size_t native_mode = 0;
	int largest_area = -1;
	float highest_refresh_rate = -1.0f;
	main_spec = parts[0];
	std::string resolution_list = parts[1];
	count = Tokenize(resolution_list, "\|", &parts);
	for (size_t i = 0; i < count; ++i) {
	DisplayMode mode;
	gfx::Rect mode_bounds;
	std::vector<std::string> resolution;
	Tokenize(parts[i], "%", &resolution);
	if (GetDisplayBounds(
	resolution[0], &mode_bounds, &mode.device_scale_factor)) {
	mode.size = mode_bounds.size();
	if (resolution.size() > 1)
	sscanf(resolution[1].c_str(), "%f", &mode.refresh_rate);
	if (mode.size.GetArea() >= largest_area &&
	mode.refresh_rate > highest_refresh_rate) {
	// Use mode with largest area and highest refresh rate as native.
	largest_area = mode.size.GetArea();
	highest_refresh_rate = mode.refresh_rate;
	native_mode = i;
	}
	display_modes.push_back(mode);
	}
	}
	display_modes[native_mode].native = true;
	}

	if (id == gfx::Display::kInvalidDisplayID)
	id = synthesized_display_id++;
	DisplayInfo display_info(
	id, base::StringPrintf("Display-%d", static_cast<int>(id)), has_overscan);
	display_info.set_device_scale_factor(device_scale_factor);
	display_info.set_rotation(rotation);
	display_info.set_configured_ui_scale(ui_scale);
	display_info.SetBounds(bounds_in_native);
	display_info.SetDisplayModes(display_modes);

	// To test the overscan, it creates the default 5% overscan.
	if (has_overscan) {
	int width = bounds_in_native.width() / device_scale_factor / 40;
	int height = bounds_in_native.height() / device_scale_factor / 40;
	display_info.SetOverscanInsets(gfx::Insets(height, width, height, width));
	display_info.UpdateDisplaySize();
	}

	DVLOG(1) << "DisplayInfoFromSpec info=" << display_info.ToString()
	<< ", spec=" << spec;
	return display_info;
	}

	DisplayInfo::DisplayInfo()
	: id_(gfx::Display::kInvalidDisplayID),
	has_overscan_(false),
	rotation_(gfx::Display::ROTATE_0),
	touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
	touch_device_id_(0),
	device_scale_factor_(1.0f),
	overscan_insets_in_dip_(0, 0, 0, 0),
	configured_ui_scale_(1.0f),
	native_(false),
	is_aspect_preserving_scaling_(false),
	clear_overscan_insets_(false),
	color_profile_(ui::COLOR_PROFILE_STANDARD) {
	}

	DisplayInfo::DisplayInfo(int64 id,
	const std::string& name,
	bool has_overscan)
	: id_(id),
	name_(name),
	has_overscan_(has_overscan),
	rotation_(gfx::Display::ROTATE_0),
	touch_support_(gfx::Display::TOUCH_SUPPORT_UNKNOWN),
	touch_device_id_(0),
	device_scale_factor_(1.0f),
	overscan_insets_in_dip_(0, 0, 0, 0),
	configured_ui_scale_(1.0f),
	native_(false),
	is_aspect_preserving_scaling_(false),
	clear_overscan_insets_(false),
	color_profile_(ui::COLOR_PROFILE_STANDARD) {
	}

	DisplayInfo::~DisplayInfo() {
	}

	void DisplayInfo::Copy(const DisplayInfo& native_info) {
	DCHECK(id_ == native_info.id_);
	name_ = native_info.name_;
	has_overscan_ = native_info.has_overscan_;

	touch_support_ = native_info.touch_support_;
	touch_device_id_ = native_info.touch_device_id_;
	device_scale_factor_ = native_info.device_scale_factor_;
	DCHECK(!native_info.bounds_in_native_.IsEmpty());
	bounds_in_native_ = native_info.bounds_in_native_;
	size_in_pixel_ = native_info.size_in_pixel_;
	is_aspect_preserving_scaling_ = native_info.is_aspect_preserving_scaling_;
	display_modes_ = native_info.display_modes_;
	available_color_profiles_ = native_info.available_color_profiles_;

	// Rotation, ui_scale, color_profile and overscan are given by preference,
	// or unit tests. Don't copy if this native_info came from
	// DisplayChangeObserver.
	if (!native_info.native()) {
	// Update the overscan_insets_in_dip_ either if the inset should be
	// cleared, or has non empty insts.
	if (native_info.clear_overscan_insets())
	overscan_insets_in_dip_.Set(0, 0, 0, 0);
	else if (!native_info.overscan_insets_in_dip_.empty())
	overscan_insets_in_dip_ = native_info.overscan_insets_in_dip_;

	rotation_ = native_info.rotation_;
	configured_ui_scale_ = native_info.configured_ui_scale_;
	color_profile_ = native_info.color_profile();
	}
	}

	void DisplayInfo::SetBounds(const gfx::Rect& new_bounds_in_native) {
	bounds_in_native_ = new_bounds_in_native;
	size_in_pixel_ = new_bounds_in_native.size();
	UpdateDisplaySize();
	}

	float DisplayInfo::GetEffectiveDeviceScaleFactor() const {
	if (Use125DSFRorUIScaling() && device_scale_factor_ == 1.25f)
	return (configured_ui_scale_ == 0.8f) ? 1.25f : 1.0f;
	if (device_scale_factor_ == configured_ui_scale_)
	return 1.0f;
	return device_scale_factor_;
	}

	float DisplayInfo::GetEffectiveUIScale() const {
	if (Use125DSFRorUIScaling() && device_scale_factor_ == 1.25f)
	return (configured_ui_scale_ == 0.8f) ? 1.0f : configured_ui_scale_;
	if (device_scale_factor_ == configured_ui_scale_)
	return 1.0f;
	return configured_ui_scale_;
	}

	void DisplayInfo::UpdateDisplaySize() {
	size_in_pixel_ = bounds_in_native_.size();
	if (!overscan_insets_in_dip_.empty()) {
	gfx::Insets insets_in_pixel =
	overscan_insets_in_dip_.Scale(device_scale_factor_);
	size_in_pixel_.Enlarge(-insets_in_pixel.width(), -insets_in_pixel.height());
	} else {
	overscan_insets_in_dip_.Set(0, 0, 0, 0);
	}

	if (rotation_ == gfx::Display::ROTATE_90 \|\|
	rotation_ == gfx::Display::ROTATE_270)
	size_in_pixel_.SetSize(size_in_pixel_.height(), size_in_pixel_.width());
	gfx::SizeF size_f(size_in_pixel_);
	size_f.Scale(GetEffectiveUIScale());
	size_in_pixel_ = gfx::ToFlooredSize(size_f);
	}

	void DisplayInfo::SetOverscanInsets(const gfx::Insets& insets_in_dip) {
	overscan_insets_in_dip_ = insets_in_dip;
	}

	gfx::Insets DisplayInfo::GetOverscanInsetsInPixel() const {
	return overscan_insets_in_dip_.Scale(device_scale_factor_);
	}

	void DisplayInfo::SetDisplayModes(
	const std::vector<DisplayMode>& display_modes) {
	display_modes_ = display_modes;
	std::sort(display_modes_.begin(), display_modes_.end(),
	DisplayModeSorter(id_ == gfx::Display::InternalDisplayId()));
	}

	gfx::Size DisplayInfo::GetNativeModeSize() const {
	for (size_t i = 0; i < display_modes_.size(); ++i) {
	if (display_modes_[i].native)
	return display_modes_[i].size;
	}

	return gfx::Size();
	}

	std::string DisplayInfo::ToString() const {
	int rotation_degree = static_cast<int>(rotation_) * 90;
	return base::StringPrintf(
	"DisplayInfo[%lld] native bounds=%s, size=%s, scale=%f, "
	"overscan=%s, rotation=%d, ui-scale=%f, touchscreen=%s, "
	"touch-device-id=%d",
	static_cast<long long int>(id_),
	bounds_in_native_.ToString().c_str(),
	size_in_pixel_.ToString().c_str(),
	device_scale_factor_,
	overscan_insets_in_dip_.ToString().c_str(),
	rotation_degree,
	configured_ui_scale_,
	touch_support_ == gfx::Display::TOUCH_SUPPORT_AVAILABLE
	? "yes"
	: touch_support_ == gfx::Display::TOUCH_SUPPORT_UNAVAILABLE
	? "no"
	: "unknown",
	touch_device_id_);
	}

	std::string DisplayInfo::ToFullString() const {
	std::string display_modes_str;
	std::vector<DisplayMode>::const_iterator iter = display_modes_.begin();
	for (; iter != display_modes_.end(); ++iter) {
	if (!display_modes_str.empty())
	display_modes_str += ",";
	base::StringAppendF(&display_modes_str,
	"(%dx%d@%f%c%s)",
	iter->size.width(),
	iter->size.height(),
	iter->refresh_rate,
	iter->interlaced ? 'I' : 'P',
	iter->native ? "(N)" : "");
	}
	return ToString() + ", display_modes==" + display_modes_str;
	}

	void DisplayInfo::SetColorProfile(ui::ColorCalibrationProfile profile) {
	if (IsColorProfileAvailable(profile))
	color_profile_ = profile;
	}

	bool DisplayInfo::IsColorProfileAvailable(
	ui::ColorCalibrationProfile profile) const {
	return std::find(available_color_profiles_.begin(),
	available_color_profiles_.end(),
	profile) != available_color_profiles_.end();
	}

	bool DisplayInfo::Use125DSFRorUIScaling() const {
	return use_125_dsf_for_ui_scaling && id_ == gfx::Display::InternalDisplayId();
	}

	} // namespace ash