Rename gfx::Display to display::Display

ui/gfx/display.cc

-// Copyright (c) 2012 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/gfx/display.h"
-
-#include <algorithm>
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/stringprintf.h"
-#include "build/build_config.h"
-#include "ui/gfx/geometry/insets.h"
-#include "ui/gfx/geometry/point_conversions.h"
-#include "ui/gfx/geometry/point_f.h"
-#include "ui/gfx/geometry/size_conversions.h"
-#include "ui/gfx/switches.h"
-
-namespace gfx {
-namespace {
-
-// This variable tracks whether the forced device scale factor switch needs to
-// be read from the command line, i.e. if it is set to -1 then the command line
-// is checked.
-int g_has_forced_device_scale_factor = -1;
-
-// This variable caches the forced device scale factor value which is read off
-// the command line. If the cache is invalidated by setting this variable to
-// -1.0, we read the forced device scale factor again.
-float g_forced_device_scale_factor = -1.0;
-
-bool HasForceDeviceScaleFactorImpl() {
-  return base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kForceDeviceScaleFactor);
-}
-
-float GetForcedDeviceScaleFactorImpl() {
-  double scale_in_double = 1.0;
-  if (HasForceDeviceScaleFactorImpl()) {
-    std::string value =
-        base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-            switches::kForceDeviceScaleFactor);
-    if (!base::StringToDouble(value, &scale_in_double)) {
-      LOG(ERROR) << "Failed to parse the default device scale factor:" << value;
-      scale_in_double = 1.0;
-    }
-  }
-  return static_cast<float>(scale_in_double);
-}
-
-int64_t internal_display_id_ = -1;
-
-}  // namespace
-
-// static
-float Display::GetForcedDeviceScaleFactor() {
-  if (g_forced_device_scale_factor < 0)
-    g_forced_device_scale_factor = GetForcedDeviceScaleFactorImpl();
-  return g_forced_device_scale_factor;
-}
-
-// static
-bool Display::HasForceDeviceScaleFactor() {
-  if (g_has_forced_device_scale_factor == -1)
-    g_has_forced_device_scale_factor = HasForceDeviceScaleFactorImpl();
-  return !!g_has_forced_device_scale_factor;
-}
-
-// static
-void Display::ResetForceDeviceScaleFactorForTesting() {
-  g_has_forced_device_scale_factor = -1;
-  g_forced_device_scale_factor = -1.0;
-}
-
-Display::Display()
-    : id_(kInvalidDisplayID),
-      device_scale_factor_(GetForcedDeviceScaleFactor()),
-      rotation_(ROTATE_0),
-      touch_support_(TOUCH_SUPPORT_UNKNOWN) {
-}
-
-Display::Display(const Display& other) = default;
-
-Display::Display(int64_t id)
-    : id_(id),
-      device_scale_factor_(GetForcedDeviceScaleFactor()),
-      rotation_(ROTATE_0),
-      touch_support_(TOUCH_SUPPORT_UNKNOWN) {}
-
-Display::Display(int64_t id, const gfx::Rect& bounds)
-    : id_(id),
-      bounds_(bounds),
-      work_area_(bounds),
-      device_scale_factor_(GetForcedDeviceScaleFactor()),
-      rotation_(ROTATE_0),
-      touch_support_(TOUCH_SUPPORT_UNKNOWN) {
-#if defined(USE_AURA)
-  SetScaleAndBounds(device_scale_factor_, bounds);
-#endif
-}
-
-Display::~Display() {
-}
-
-int Display::RotationAsDegree() const {
-  switch (rotation_) {
-    case ROTATE_0:
-      return 0;
-    case ROTATE_90:
-      return 90;
-    case ROTATE_180:
-      return 180;
-    case ROTATE_270:
-      return 270;
-  }
-
-  NOTREACHED();
-  return 0;
-}
-
-void Display::SetRotationAsDegree(int rotation) {
-  switch (rotation) {
-    case 0:
-      rotation_ = ROTATE_0;
-      break;
-    case 90:
-      rotation_ = ROTATE_90;
-      break;
-    case 180:
-      rotation_ = ROTATE_180;
-      break;
-    case 270:
-      rotation_ = ROTATE_270;
-      break;
-    default:
-      // We should not reach that but we will just ignore the call if we do.
-      NOTREACHED();
-  }
-}
-
-Insets Display::GetWorkAreaInsets() const {
-  return gfx::Insets(work_area_.y() - bounds_.y(),
-                     work_area_.x() - bounds_.x(),
-                     bounds_.bottom() - work_area_.bottom(),
-                     bounds_.right() - work_area_.right());
-}
-
-void Display::SetScaleAndBounds(
-    float device_scale_factor,
-    const gfx::Rect& bounds_in_pixel) {
-  Insets insets = bounds_.InsetsFrom(work_area_);
-  if (!HasForceDeviceScaleFactor()) {
-#if defined(OS_MACOSX)
-    // Unless an explicit scale factor was provided for testing, ensure the
-    // scale is integral.
-    device_scale_factor = static_cast<int>(device_scale_factor);
-#endif
-    device_scale_factor_ = device_scale_factor;
-  }
-  device_scale_factor_ = std::max(1.0f, device_scale_factor_);
-  bounds_ = gfx::Rect(gfx::ScaleToFlooredPoint(bounds_in_pixel.origin(),
-                                               1.0f / device_scale_factor_),
-                      gfx::ScaleToFlooredSize(bounds_in_pixel.size(),
-                                              1.0f / device_scale_factor_));
-  UpdateWorkAreaFromInsets(insets);
-}
-
-void Display::SetSize(const gfx::Size& size_in_pixel) {
-  gfx::Point origin = bounds_.origin();
-#if defined(USE_AURA)
-  origin = gfx::ScaleToFlooredPoint(origin, device_scale_factor_);
-#endif
-  SetScaleAndBounds(device_scale_factor_, gfx::Rect(origin, size_in_pixel));
-}
-
-void Display::UpdateWorkAreaFromInsets(const gfx::Insets& insets) {
-  work_area_ = bounds_;
-  work_area_.Inset(insets);
-}
-
-gfx::Size Display::GetSizeInPixel() const {
-  return gfx::ScaleToFlooredSize(size(), device_scale_factor_);
-}
-
-std::string Display::ToString() const {
-  return base::StringPrintf(
-      "Display[%lld] bounds=%s, workarea=%s, scale=%f, %s",
-      static_cast<long long int>(id_),
-      bounds_.ToString().c_str(),
-      work_area_.ToString().c_str(),
-      device_scale_factor_,
-      IsInternal() ? "internal" : "external");
-}
-
-bool Display::IsInternal() const {
-  return is_valid() && (id_ == internal_display_id_);
-}
-
-// static
-int64_t Display::InternalDisplayId() {
-  DCHECK_NE(kInvalidDisplayID, internal_display_id_);
-  return internal_display_id_;
-}
-
-// static
-void Display::SetInternalDisplayId(int64_t internal_display_id) {
-  internal_display_id_ = internal_display_id;
-}
-
-// static
-bool Display::IsInternalDisplayId(int64_t display_id) {
-  DCHECK_NE(kInvalidDisplayID, display_id);
-  return HasInternalDisplay() && internal_display_id_ == display_id;
-}
-
-// static
-bool Display::HasInternalDisplay() {
-  return internal_display_id_ != kInvalidDisplayID;
-}
-
-}  // namespace gfx