ui/display/manager/managed_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 "ui/display/manager/managed_display_info.h"

 #include <stdio.h>

 #include <string>
 #include <vector>

 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "ui/display/display.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/geometry/size_f.h"

 #if defined(OS_WIN)
 #include <windows.h>
 #include "ui/display/win/dpi.h"
 #endif

 namespace display {
 namespace {

 // Use larger than max int to catch overflow early.
 const int64_t kSynthesizedDisplayIdStart = 2200000000LL;

 int64_t synthesized_display_id = kSynthesizedDisplayIdStart;

 const float kDpi96 = 96.0;

 // 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 ManagedDisplayModeSorter {
   explicit ManagedDisplayModeSorter(bool is_internal)
       : is_internal(is_internal) {}

   bool operator()(const ManagedDisplayMode& a, const ManagedDisplayMode& 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

 ManagedDisplayMode::ManagedDisplayMode() {}

 ManagedDisplayMode::ManagedDisplayMode(const gfx::Size& size) : size_(size) {}

 ManagedDisplayMode::ManagedDisplayMode(const gfx::Size& size,
                                        float refresh_rate,
                                        bool is_interlaced,
                                        bool native)
     : size_(size),
       refresh_rate_(refresh_rate),
       is_interlaced_(is_interlaced),
       native_(native) {}

 ManagedDisplayMode::ManagedDisplayMode(const gfx::Size& size,
                                        float refresh_rate,
                                        bool is_interlaced,
                                        bool native,
                                        float ui_scale,
                                        float device_scale_factor)
     : size_(size),
       refresh_rate_(refresh_rate),
       is_interlaced_(is_interlaced),
       native_(native),
       ui_scale_(ui_scale),
       device_scale_factor_(device_scale_factor) {}

 ManagedDisplayMode::~ManagedDisplayMode() = default;

 ManagedDisplayMode::ManagedDisplayMode(const ManagedDisplayMode& other) =
     default;

 ManagedDisplayMode& ManagedDisplayMode::operator=(
     const ManagedDisplayMode& other) = default;

 gfx::Size ManagedDisplayMode::GetSizeInDIP(bool is_internal) const {
   gfx::SizeF size_dip(size_);
   size_dip.Scale(ui_scale_);
   // DSF=1.25 is special on internal display. The screen is drawn with DSF=1.25
   // but it doesn't affect the screen size computation.
   if (is_internal && device_scale_factor_ == 1.25f)
     return gfx::ToFlooredSize(size_dip);
   size_dip.Scale(1.0f / device_scale_factor_);
   return gfx::ToFlooredSize(size_dip);
 }

 bool ManagedDisplayMode::IsEquivalent(const ManagedDisplayMode& 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;
 }

 // static
 ManagedDisplayInfo ManagedDisplayInfo::CreateFromSpec(const std::string& spec) {
   return CreateFromSpecWithID(spec, kInvalidDisplayId);
 }

 // static
 ManagedDisplayInfo ManagedDisplayInfo::CreateFromSpecWithID(
     const std::string& spec,
     int64_t id) {
 #if defined(OS_WIN)
   gfx::Rect bounds_in_native(
       gfx::Size(GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN)));
 #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 = base::SplitString(
       main_spec, "@", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
   if (parts.size() == 2) {
     double scale_in_double = 0;
     if (base::StringToDouble(parts[1], &scale_in_double))
       ui_scale = scale_in_double;
     main_spec = parts[0];
   }

   parts = base::SplitString(main_spec, "/", base::KEEP_WHITESPACE,
                             base::SPLIT_WANT_NONEMPTY);
   Display::Rotation rotation(Display::ROTATE_0);
   bool has_overscan = false;
   if (!parts.empty()) {
     main_spec = parts[0];
     if (parts.size() >= 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 = Display::ROTATE_90;
             break;
           case 'u':  // 180 degrees, 'u'pside-down.
             rotation = Display::ROTATE_180;
             break;
           case 'l':  // rotate 90 degrees to 'left'.
             rotation = 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 = win::GetDPIScale();
 #endif
   }

   ManagedDisplayModeList display_modes;
   parts = base::SplitString(main_spec, "#", base::KEEP_WHITESPACE,
                             base::SPLIT_WANT_NONEMPTY);
   if (parts.size() == 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];
     parts = base::SplitString(resolution_list, "|", base::KEEP_WHITESPACE,
                               base::SPLIT_WANT_NONEMPTY);
     for (size_t i = 0; i < parts.size(); ++i) {
       gfx::Size size;
       float refresh_rate = 0.0f;
       bool is_interlaced = false;

       gfx::Rect mode_bounds;
       std::vector<std::string> resolution = base::SplitString(
           parts[i], "%", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
       if (GetDisplayBounds(resolution[0], &mode_bounds, &device_scale_factor)) {
         size = mode_bounds.size();
         if (resolution.size() > 1)
           sscanf(resolution[1].c_str(), "%f", &refresh_rate);
         if (size.GetArea() >= largest_area &&
             refresh_rate > highest_refresh_rate) {
           // Use mode with largest area and highest refresh rate as native.
           largest_area = size.GetArea();
           highest_refresh_rate = refresh_rate;
           native_mode = i;
         }
         display_modes.push_back(ManagedDisplayMode(size, refresh_rate,
                                                    is_interlaced, false, 1.0,
                                                    device_scale_factor));
       }
     }
     ManagedDisplayMode dm = display_modes[native_mode];
     display_modes[native_mode] =
         ManagedDisplayMode(dm.size(), dm.refresh_rate(), dm.is_interlaced(),
                            true, dm.ui_scale(), dm.device_scale_factor());
   }

   if (id == kInvalidDisplayId)
     id = synthesized_display_id++;
   ManagedDisplayInfo display_info(
       id, base::StringPrintf("Display-%d", static_cast<int>(id)), has_overscan);
   display_info.set_device_scale_factor(device_scale_factor);
   display_info.SetRotation(rotation, Display::RotationSource::ACTIVE);
   display_info.set_configured_ui_scale(ui_scale);
   display_info.SetBounds(bounds_in_native);
   display_info.SetManagedDisplayModes(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;
 }

 ManagedDisplayInfo::ManagedDisplayInfo()
     : id_(kInvalidDisplayId),
       year_of_manufacture_(kInvalidYearOfManufacture),
       has_overscan_(false),
       active_rotation_source_(Display::RotationSource::UNKNOWN),
       touch_support_(Display::TouchSupport::UNKNOWN),
       device_scale_factor_(1.0f),
       device_dpi_(kDpi96),
       overscan_insets_in_dip_(0, 0, 0, 0),
       zoom_factor_(1.f),
       configured_ui_scale_(1.0f),
       native_(false),
       is_aspect_preserving_scaling_(false),
       clear_overscan_insets_(false) {}

 ManagedDisplayInfo::ManagedDisplayInfo(int64_t id,
                                        const std::string& name,
                                        bool has_overscan)
     : id_(id),
       name_(name),
       year_of_manufacture_(kInvalidYearOfManufacture),
       has_overscan_(has_overscan),
       active_rotation_source_(Display::RotationSource::UNKNOWN),
       touch_support_(Display::TouchSupport::UNKNOWN),
       device_scale_factor_(1.0f),
       device_dpi_(kDpi96),
       overscan_insets_in_dip_(0, 0, 0, 0),
       zoom_factor_(1.f),
       configured_ui_scale_(1.0f),
       native_(false),
       is_aspect_preserving_scaling_(false),
       clear_overscan_insets_(false) {}

 ManagedDisplayInfo::ManagedDisplayInfo(const ManagedDisplayInfo& other) =
     default;

 ManagedDisplayInfo::~ManagedDisplayInfo() {}

 void ManagedDisplayInfo::SetRotation(Display::Rotation rotation,
                                      Display::RotationSource source) {
   rotations_[source] = rotation;
   rotations_[Display::RotationSource::ACTIVE] = rotation;
   active_rotation_source_ = source;
 }

 Display::Rotation ManagedDisplayInfo::GetActiveRotation() const {
   return GetRotation(Display::RotationSource::ACTIVE);
 }

 Display::Rotation ManagedDisplayInfo::GetRotation(
     Display::RotationSource source) const {
   if (rotations_.find(source) == rotations_.end())
     return Display::ROTATE_0;
   return rotations_.at(source);
 }

 void ManagedDisplayInfo::Copy(const ManagedDisplayInfo& native_info) {
   DCHECK(id_ == native_info.id_);
   manufacturer_id_ = native_info.manufacturer_id_;
   product_id_ = native_info.product_id_;
   year_of_manufacture_ = native_info.year_of_manufacture_;
   name_ = native_info.name_;
   has_overscan_ = native_info.has_overscan_;

   active_rotation_source_ = native_info.active_rotation_source_;
   touch_support_ = native_info.touch_support_;
   device_scale_factor_ = native_info.device_scale_factor_;
   DCHECK(!native_info.bounds_in_native_.IsEmpty());
   bounds_in_native_ = native_info.bounds_in_native_;
   device_dpi_ = native_info.device_dpi_;
   size_in_pixel_ = native_info.size_in_pixel_;
   is_aspect_preserving_scaling_ = native_info.is_aspect_preserving_scaling_;
   display_modes_ = native_info.display_modes_;
   maximum_cursor_size_ = native_info.maximum_cursor_size_;
   color_space_ = native_info.color_space_;

   // 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())
     return;
   // 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_.IsEmpty())
     overscan_insets_in_dip_ = native_info.overscan_insets_in_dip_;

   rotations_ = native_info.rotations_;
   zoom_factor_ = native_info.zoom_factor_;
   configured_ui_scale_ = native_info.configured_ui_scale_;
 }

 void ManagedDisplayInfo::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 ManagedDisplayInfo::GetDensityRatio() const {
   if (Display::IsInternalDisplayId(id_) && device_scale_factor_ == 1.25f)
     return 1.0f;
   return device_scale_factor_;
 }

 float ManagedDisplayInfo::GetEffectiveDeviceScaleFactor() const {
   if (Display::IsInternalDisplayId(id_) && device_scale_factor_ == 1.25f)
     return ((configured_ui_scale_ == 0.8f) ? 1.25f : 1.0f) * zoom_factor_;
   if (device_scale_factor_ == configured_ui_scale_)
     return zoom_factor_;
   return device_scale_factor_ * zoom_factor_;
 }

 float ManagedDisplayInfo::GetEffectiveUIScale() const {
   if (Display::IsInternalDisplayId(id_) && 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 ManagedDisplayInfo::UpdateDisplaySize() {
   size_in_pixel_ = bounds_in_native_.size();
   if (!overscan_insets_in_dip_.IsEmpty()) {
     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 (GetActiveRotation() == Display::ROTATE_90 ||
       GetActiveRotation() == 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 ManagedDisplayInfo::SetOverscanInsets(const gfx::Insets& insets_in_dip) {
   overscan_insets_in_dip_ = insets_in_dip;
 }

 gfx::Insets ManagedDisplayInfo::GetOverscanInsetsInPixel() const {
   return overscan_insets_in_dip_.Scale(device_scale_factor_ * zoom_factor_);
 }

 void ManagedDisplayInfo::SetManagedDisplayModes(
     const ManagedDisplayModeList& display_modes) {
   display_modes_ = display_modes;
   std::sort(display_modes_.begin(), display_modes_.end(),
             ManagedDisplayModeSorter(Display::IsInternalDisplayId(id_)));
 }

 gfx::Size ManagedDisplayInfo::GetNativeModeSize() const {
   for (const ManagedDisplayMode& display_mode : display_modes_) {
     if (display_mode.native())
       return display_mode.size();
   }
   return gfx::Size();
 }

 std::string ManagedDisplayInfo::ToString() const {
   int rotation_degree = static_cast<int>(GetActiveRotation()) * 90;

   std::string result = base::StringPrintf(
       "ManagedDisplayInfo[%lld] native bounds=%s, size=%s, device-scale=%g, "
       "display-zoom=%g, overscan=%s, rotation=%d, ui-scale=%g, touchscreen=%s",
       static_cast<long long int>(id_), bounds_in_native_.ToString().c_str(),
       size_in_pixel_.ToString().c_str(), device_scale_factor_, zoom_factor_,
       overscan_insets_in_dip_.ToString().c_str(), rotation_degree,
       configured_ui_scale_,
       touch_support_ == Display::TouchSupport::AVAILABLE
           ? "yes"
           : touch_support_ == Display::TouchSupport::UNAVAILABLE ? "no"
                                                                  : "unknown");

   return result;
 }

 std::string ManagedDisplayInfo::ToFullString() const {
   std::string display_modes_str;
   for (const ManagedDisplayMode& m : display_modes_) {
     if (!display_modes_str.empty())
       display_modes_str += ",";
     base::StringAppendF(&display_modes_str, "(%dx%d@%g%c%s %g/%g)",
                         m.size().width(), m.size().height(), m.refresh_rate(),
                         m.is_interlaced() ? 'I' : 'P', m.native() ? "(N)" : "",
                         m.ui_scale(), m.device_scale_factor());
   }
   return ToString() + ", display_modes==" + display_modes_str;
 }

 void ResetDisplayIdForTest() {
   synthesized_display_id = kSynthesizedDisplayIdStart;
 }

 }  // namespace display
	// 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 "ui/display/manager/managed_display_info.h"

	#include <stdio.h>

	#include <string>
	#include <vector>

	#include "base/format_macros.h"
	#include "base/logging.h"
	#include "base/stl_util.h"
	#include "base/strings/string_number_conversions.h"
	#include "base/strings/string_split.h"
	#include "base/strings/string_util.h"
	#include "base/strings/stringprintf.h"
	#include "ui/display/display.h"
	#include "ui/gfx/geometry/size_conversions.h"
	#include "ui/gfx/geometry/size_f.h"

	#if defined(OS_WIN)
	#include <windows.h>
	#include "ui/display/win/dpi.h"
	#endif

	namespace display {
	namespace {

	// Use larger than max int to catch overflow early.
	const int64_t kSynthesizedDisplayIdStart = 2200000000LL;

	int64_t synthesized_display_id = kSynthesizedDisplayIdStart;

	const float kDpi96 = 96.0;

	// 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 ManagedDisplayModeSorter {
	explicit ManagedDisplayModeSorter(bool is_internal)
	: is_internal(is_internal) {}

	bool operator()(const ManagedDisplayMode& a, const ManagedDisplayMode& 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

	ManagedDisplayMode::ManagedDisplayMode() {}

	ManagedDisplayMode::ManagedDisplayMode(const gfx::Size& size) : size_(size) {}

	ManagedDisplayMode::ManagedDisplayMode(const gfx::Size& size,
	float refresh_rate,
	bool is_interlaced,
	bool native)
	: size_(size),
	refresh_rate_(refresh_rate),
	is_interlaced_(is_interlaced),
	native_(native) {}

	ManagedDisplayMode::ManagedDisplayMode(const gfx::Size& size,
	float refresh_rate,
	bool is_interlaced,
	bool native,
	float ui_scale,
	float device_scale_factor)
	: size_(size),
	refresh_rate_(refresh_rate),
	is_interlaced_(is_interlaced),
	native_(native),
	ui_scale_(ui_scale),
	device_scale_factor_(device_scale_factor) {}

	ManagedDisplayMode::~ManagedDisplayMode() = default;

	ManagedDisplayMode::ManagedDisplayMode(const ManagedDisplayMode& other) =
	default;

	ManagedDisplayMode& ManagedDisplayMode::operator=(
	const ManagedDisplayMode& other) = default;

	gfx::Size ManagedDisplayMode::GetSizeInDIP(bool is_internal) const {
	gfx::SizeF size_dip(size_);
	size_dip.Scale(ui_scale_);
	// DSF=1.25 is special on internal display. The screen is drawn with DSF=1.25
	// but it doesn't affect the screen size computation.
	if (is_internal && device_scale_factor_ == 1.25f)
	return gfx::ToFlooredSize(size_dip);
	size_dip.Scale(1.0f / device_scale_factor_);
	return gfx::ToFlooredSize(size_dip);
	}

	bool ManagedDisplayMode::IsEquivalent(const ManagedDisplayMode& 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;
	}

	// static
	ManagedDisplayInfo ManagedDisplayInfo::CreateFromSpec(const std::string& spec) {
	return CreateFromSpecWithID(spec, kInvalidDisplayId);
	}

	// static
	ManagedDisplayInfo ManagedDisplayInfo::CreateFromSpecWithID(
	const std::string& spec,
	int64_t id) {
	#if defined(OS_WIN)
	gfx::Rect bounds_in_native(
	gfx::Size(GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN)));
	#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 = base::SplitString(
	main_spec, "@", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
	if (parts.size() == 2) {
	double scale_in_double = 0;
	if (base::StringToDouble(parts[1], &scale_in_double))
	ui_scale = scale_in_double;
	main_spec = parts[0];
	}

	parts = base::SplitString(main_spec, "/", base::KEEP_WHITESPACE,
	base::SPLIT_WANT_NONEMPTY);
	Display::Rotation rotation(Display::ROTATE_0);
	bool has_overscan = false;
	if (!parts.empty()) {
	main_spec = parts[0];
	if (parts.size() >= 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 = Display::ROTATE_90;
	break;
	case 'u': // 180 degrees, 'u'pside-down.
	rotation = Display::ROTATE_180;
	break;
	case 'l': // rotate 90 degrees to 'left'.
	rotation = 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 = win::GetDPIScale();
	#endif
	}

	ManagedDisplayModeList display_modes;
	parts = base::SplitString(main_spec, "#", base::KEEP_WHITESPACE,
	base::SPLIT_WANT_NONEMPTY);
	if (parts.size() == 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];
	parts = base::SplitString(resolution_list, "\|", base::KEEP_WHITESPACE,
	base::SPLIT_WANT_NONEMPTY);
	for (size_t i = 0; i < parts.size(); ++i) {
	gfx::Size size;
	float refresh_rate = 0.0f;
	bool is_interlaced = false;

	gfx::Rect mode_bounds;
	std::vector<std::string> resolution = base::SplitString(
	parts[i], "%", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
	if (GetDisplayBounds(resolution[0], &mode_bounds, &device_scale_factor)) {
	size = mode_bounds.size();
	if (resolution.size() > 1)
	sscanf(resolution[1].c_str(), "%f", &refresh_rate);
	if (size.GetArea() >= largest_area &&
	refresh_rate > highest_refresh_rate) {
	// Use mode with largest area and highest refresh rate as native.
	largest_area = size.GetArea();
	highest_refresh_rate = refresh_rate;
	native_mode = i;
	}
	display_modes.push_back(ManagedDisplayMode(size, refresh_rate,
	is_interlaced, false, 1.0,
	device_scale_factor));
	}
	}
	ManagedDisplayMode dm = display_modes[native_mode];
	display_modes[native_mode] =
	ManagedDisplayMode(dm.size(), dm.refresh_rate(), dm.is_interlaced(),
	true, dm.ui_scale(), dm.device_scale_factor());
	}

	if (id == kInvalidDisplayId)
	id = synthesized_display_id++;
	ManagedDisplayInfo display_info(
	id, base::StringPrintf("Display-%d", static_cast<int>(id)), has_overscan);
	display_info.set_device_scale_factor(device_scale_factor);
	display_info.SetRotation(rotation, Display::RotationSource::ACTIVE);
	display_info.set_configured_ui_scale(ui_scale);
	display_info.SetBounds(bounds_in_native);
	display_info.SetManagedDisplayModes(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;
	}

	ManagedDisplayInfo::ManagedDisplayInfo()
	: id_(kInvalidDisplayId),
	year_of_manufacture_(kInvalidYearOfManufacture),
	has_overscan_(false),
	active_rotation_source_(Display::RotationSource::UNKNOWN),
	touch_support_(Display::TouchSupport::UNKNOWN),
	device_scale_factor_(1.0f),
	device_dpi_(kDpi96),
	overscan_insets_in_dip_(0, 0, 0, 0),
	zoom_factor_(1.f),
	configured_ui_scale_(1.0f),
	native_(false),
	is_aspect_preserving_scaling_(false),
	clear_overscan_insets_(false) {}

	ManagedDisplayInfo::ManagedDisplayInfo(int64_t id,
	const std::string& name,
	bool has_overscan)
	: id_(id),
	name_(name),
	year_of_manufacture_(kInvalidYearOfManufacture),
	has_overscan_(has_overscan),
	active_rotation_source_(Display::RotationSource::UNKNOWN),
	touch_support_(Display::TouchSupport::UNKNOWN),
	device_scale_factor_(1.0f),
	device_dpi_(kDpi96),
	overscan_insets_in_dip_(0, 0, 0, 0),
	zoom_factor_(1.f),
	configured_ui_scale_(1.0f),
	native_(false),
	is_aspect_preserving_scaling_(false),
	clear_overscan_insets_(false) {}

	ManagedDisplayInfo::ManagedDisplayInfo(const ManagedDisplayInfo& other) =
	default;

	ManagedDisplayInfo::~ManagedDisplayInfo() {}

	void ManagedDisplayInfo::SetRotation(Display::Rotation rotation,
	Display::RotationSource source) {
	rotations_[source] = rotation;
	rotations_[Display::RotationSource::ACTIVE] = rotation;
	active_rotation_source_ = source;
	}

	Display::Rotation ManagedDisplayInfo::GetActiveRotation() const {
	return GetRotation(Display::RotationSource::ACTIVE);
	}

	Display::Rotation ManagedDisplayInfo::GetRotation(
	Display::RotationSource source) const {
	if (rotations_.find(source) == rotations_.end())
	return Display::ROTATE_0;
	return rotations_.at(source);
	}

	void ManagedDisplayInfo::Copy(const ManagedDisplayInfo& native_info) {
	DCHECK(id_ == native_info.id_);
	manufacturer_id_ = native_info.manufacturer_id_;
	product_id_ = native_info.product_id_;
	year_of_manufacture_ = native_info.year_of_manufacture_;
	name_ = native_info.name_;
	has_overscan_ = native_info.has_overscan_;

	active_rotation_source_ = native_info.active_rotation_source_;
	touch_support_ = native_info.touch_support_;
	device_scale_factor_ = native_info.device_scale_factor_;
	DCHECK(!native_info.bounds_in_native_.IsEmpty());
	bounds_in_native_ = native_info.bounds_in_native_;
	device_dpi_ = native_info.device_dpi_;
	size_in_pixel_ = native_info.size_in_pixel_;
	is_aspect_preserving_scaling_ = native_info.is_aspect_preserving_scaling_;
	display_modes_ = native_info.display_modes_;
	maximum_cursor_size_ = native_info.maximum_cursor_size_;
	color_space_ = native_info.color_space_;

	// 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())
	return;
	// 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_.IsEmpty())
	overscan_insets_in_dip_ = native_info.overscan_insets_in_dip_;

	rotations_ = native_info.rotations_;
	zoom_factor_ = native_info.zoom_factor_;
	configured_ui_scale_ = native_info.configured_ui_scale_;
	}

	void ManagedDisplayInfo::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 ManagedDisplayInfo::GetDensityRatio() const {
	if (Display::IsInternalDisplayId(id_) && device_scale_factor_ == 1.25f)
	return 1.0f;
	return device_scale_factor_;
	}

	float ManagedDisplayInfo::GetEffectiveDeviceScaleFactor() const {
	if (Display::IsInternalDisplayId(id_) && device_scale_factor_ == 1.25f)
	return ((configured_ui_scale_ == 0.8f) ? 1.25f : 1.0f) * zoom_factor_;
	if (device_scale_factor_ == configured_ui_scale_)
	return zoom_factor_;
	return device_scale_factor_ * zoom_factor_;
	}

	float ManagedDisplayInfo::GetEffectiveUIScale() const {
	if (Display::IsInternalDisplayId(id_) && 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 ManagedDisplayInfo::UpdateDisplaySize() {
	size_in_pixel_ = bounds_in_native_.size();
	if (!overscan_insets_in_dip_.IsEmpty()) {
	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 (GetActiveRotation() == Display::ROTATE_90 \|\|
	GetActiveRotation() == 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 ManagedDisplayInfo::SetOverscanInsets(const gfx::Insets& insets_in_dip) {
	overscan_insets_in_dip_ = insets_in_dip;
	}

	gfx::Insets ManagedDisplayInfo::GetOverscanInsetsInPixel() const {
	return overscan_insets_in_dip_.Scale(device_scale_factor_ * zoom_factor_);
	}

	void ManagedDisplayInfo::SetManagedDisplayModes(
	const ManagedDisplayModeList& display_modes) {
	display_modes_ = display_modes;
	std::sort(display_modes_.begin(), display_modes_.end(),
	ManagedDisplayModeSorter(Display::IsInternalDisplayId(id_)));
	}

	gfx::Size ManagedDisplayInfo::GetNativeModeSize() const {
	for (const ManagedDisplayMode& display_mode : display_modes_) {
	if (display_mode.native())
	return display_mode.size();
	}
	return gfx::Size();
	}

	std::string ManagedDisplayInfo::ToString() const {
	int rotation_degree = static_cast<int>(GetActiveRotation()) * 90;

	std::string result = base::StringPrintf(
	"ManagedDisplayInfo[%lld] native bounds=%s, size=%s, device-scale=%g, "
	"display-zoom=%g, overscan=%s, rotation=%d, ui-scale=%g, touchscreen=%s",
	static_cast<long long int>(id_), bounds_in_native_.ToString().c_str(),
	size_in_pixel_.ToString().c_str(), device_scale_factor_, zoom_factor_,
	overscan_insets_in_dip_.ToString().c_str(), rotation_degree,
	configured_ui_scale_,
	touch_support_ == Display::TouchSupport::AVAILABLE
	? "yes"
	: touch_support_ == Display::TouchSupport::UNAVAILABLE ? "no"
	: "unknown");

	return result;
	}

	std::string ManagedDisplayInfo::ToFullString() const {
	std::string display_modes_str;
	for (const ManagedDisplayMode& m : display_modes_) {
	if (!display_modes_str.empty())
	display_modes_str += ",";
	base::StringAppendF(&display_modes_str, "(%dx%d@%g%c%s %g/%g)",
	m.size().width(), m.size().height(), m.refresh_rate(),
	m.is_interlaced() ? 'I' : 'P', m.native() ? "(N)" : "",
	m.ui_scale(), m.device_scale_factor());
	}
	return ToString() + ", display_modes==" + display_modes_str;
	}

	void ResetDisplayIdForTest() {
	synthesized_display_id = kSynthesizedDisplayIdStart;
	}

	} // namespace display