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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/android/display_android_manager.h"
#include <jni.h>
#include <initializer_list>
#include <map>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/feature_list.h"
#include "base/trace_event/trace_event.h"
#include "components/viz/common/features.h"
#include "components/viz/common/viz_utils.h"
#include "skia/ext/skcolorspace_trfn.h"
#include "ui/android/screen_android.h"
#include "ui/android/ui_android_features.h"
#include "ui/android/window_android.h"
#include "ui/display/display.h"
#include "ui/display/util/display_util.h"
#include "ui/gfx/display_color_spaces.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/icc_profile.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "ui/android/ui_android_jni_headers/DisplayAndroidManager_jni.h"
namespace ui {
using base::android::AttachCurrentThread;
using display::Display;
using display::DisplayList;
void SetScreenAndroid(bool use_display_wide_color_gamut) {
TRACE_EVENT0("startup", "SetScreenAndroid");
// Do not override existing Screen.
DCHECK_EQ(display::Screen::GetScreen(), nullptr);
DisplayAndroidManager* manager =
new DisplayAndroidManager(use_display_wide_color_gamut);
display::Screen::SetScreenInstance(manager);
JNIEnv* env = AttachCurrentThread();
Java_DisplayAndroidManager_onNativeSideCreated(env, (jlong)manager);
}
DisplayAndroidManager::DisplayAndroidManager(bool use_display_wide_color_gamut)
: use_display_wide_color_gamut_(use_display_wide_color_gamut) {}
// Screen interface.
Display DisplayAndroidManager::GetDisplayNearestWindow(
gfx::NativeWindow window) const {
if (window) {
DisplayList::Displays::const_iterator it =
display_list().FindDisplayById(window->display_id());
if (it != display_list().displays().end()) {
return *it;
}
}
return GetPrimaryDisplay();
}
Display DisplayAndroidManager::GetDisplayNearestView(
gfx::NativeView view) const {
return GetDisplayNearestWindow(view ? view->GetWindowAndroid() : nullptr);
}
// There is no notion of relative display positions on Android.
Display DisplayAndroidManager::GetDisplayNearestPoint(
const gfx::Point& point) const {
NOTIMPLEMENTED();
return GetPrimaryDisplay();
}
// There is no notion of relative display positions on Android.
Display DisplayAndroidManager::GetDisplayMatching(
const gfx::Rect& match_rect) const {
NOTIMPLEMENTED();
return GetPrimaryDisplay();
}
std::optional<float> DisplayAndroidManager::GetPreferredScaleFactorForView(
gfx::NativeView view) const {
return GetDisplayNearestView(view).device_scale_factor();
}
void DisplayAndroidManager::DoUpdateDisplay(display::Display* display,
const std::string& label,
const gfx::Rect& bounds,
const gfx::Rect& work_area,
const gfx::Size& size_in_pixels,
float dip_scale,
int rotation_degrees,
int bits_per_pixel,
int bits_per_component,
bool is_wide_color_gamut,
bool is_hdr,
float hdr_max_luminance_ratio) {
display->set_label(label);
display->set_bounds(bounds);
if (base::FeatureList::IsEnabled(kAndroidUseCorrectDisplayWorkArea)) {
display->set_work_area(work_area);
} else {
display->set_work_area(bounds);
}
display->set_size_in_pixels(size_in_pixels);
display->set_device_scale_factor(dip_scale);
{
// Decide the color space to use for sRGB, WCG, and HDR content. By default,
// everything is crushed into sRGB.
gfx::ColorSpace cs_for_srgb = gfx::ColorSpace::CreateSRGB();
gfx::ColorSpace cs_for_wcg = cs_for_srgb;
if (is_wide_color_gamut) {
// If the device supports WCG, then use P3 for the output surface when
// there is WCG content on screen.
cs_for_wcg = gfx::ColorSpace::CreateDisplayP3D65();
// If dynamically changing color gamut is disallowed, then use P3 even
// when all content is sRGB.
if (!features::IsDynamicColorGamutEnabled()) {
cs_for_srgb = cs_for_wcg;
}
}
// The color space for HDR is scaled to reach the maximum luminance ratio.
gfx::ColorSpace cs_for_hdr = cs_for_wcg;
if (base::FeatureList::IsEnabled(kAndroidHDR)) {
if (hdr_max_luminance_ratio > 1.f) {
skcms_TransferFunction trfn;
cs_for_hdr.GetTransferFunction(&trfn);
trfn = skia::ScaleTransferFunction(trfn, hdr_max_luminance_ratio);
cs_for_hdr = gfx::ColorSpace(
cs_for_hdr.GetPrimaryID(), gfx::ColorSpace::TransferID::CUSTOM_HDR,
gfx::ColorSpace::MatrixID::RGB, gfx::ColorSpace::RangeID::FULL,
nullptr, &trfn);
}
if (is_hdr) {
hdr_max_luminance_ratio =
std::max(hdr_max_luminance_ratio,
display::kMinHDRCapableMaxLuminanceRelative);
}
} else {
hdr_max_luminance_ratio = 1.f;
}
// Propagate this into the DisplayColorSpaces.
gfx::DisplayColorSpaces display_color_spaces(gfx::ColorSpace::CreateSRGB(),
gfx::BufferFormat::RGBA_8888);
display_color_spaces.SetHDRMaxLuminanceRelative(hdr_max_luminance_ratio);
for (auto needs_alpha : {true, false}) {
// TODO: Low-end devices should specify RGB_565 as the buffer format for
// opaque content.
display_color_spaces.SetOutputColorSpaceAndBufferFormat(
gfx::ContentColorUsage::kSRGB, needs_alpha, cs_for_srgb,
gfx::BufferFormat::RGBA_8888);
display_color_spaces.SetOutputColorSpaceAndBufferFormat(
gfx::ContentColorUsage::kWideColorGamut, needs_alpha, cs_for_wcg,
gfx::BufferFormat::RGBA_8888);
// TODO(crbug.com/40263227): Use 10-bit surfaces for opaque HDR.
display_color_spaces.SetOutputColorSpaceAndBufferFormat(
gfx::ContentColorUsage::kHDR, needs_alpha, cs_for_hdr,
gfx::BufferFormat::RGBA_8888);
}
display->SetColorSpaces(display_color_spaces);
}
display->SetRotationAsDegree(rotation_degrees);
DCHECK_EQ(rotation_degrees, display->RotationAsDegree());
DCHECK_EQ(rotation_degrees, display->PanelRotationAsDegree());
display->set_color_depth(bits_per_pixel);
display->set_depth_per_component(bits_per_component);
display->set_is_monochrome(bits_per_component == 0);
}
// Methods called from Java
void DisplayAndroidManager::UpdateDisplay(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& jObject,
jint sdkDisplayId,
const base::android::JavaRef<jstring>& label,
const base::android::JavaRef<jintArray>&
jBounds, // the order is: left, top, right, bottom
const base::android::JavaRef<jintArray>&
jInsets, // the order is: left, top, right, bottom
jfloat dipScale,
jint rotationDegrees,
jint bitsPerPixel,
jint bitsPerComponent,
jboolean isWideColorGamut,
jboolean isHdr,
jfloat hdrMaxLuminanceRatio,
jboolean isInternal) {
if (Display::HasForceDeviceScaleFactor()) {
dipScale = Display::GetForcedDeviceScaleFactor();
}
std::vector<int> bounds, insets;
base::android::JavaIntArrayToIntVector(env, jBounds, &bounds);
base::android::JavaIntArrayToIntVector(env, jInsets, &insets);
gfx::Rect bounds_in_pixels;
bounds_in_pixels.SetByBounds(bounds[0], bounds[1], bounds[2], bounds[3]);
const gfx::Rect dip_bounds =
gfx::ScaleToEnclosingRect(bounds_in_pixels, 1.0f / dipScale);
gfx::Rect work_area_in_pixels = bounds_in_pixels;
work_area_in_pixels.Inset(
gfx::Insets::TLBR(insets[1], insets[0], insets[3], insets[2]));
const gfx::Rect dip_work_area =
gfx::ScaleToEnclosingRect(work_area_in_pixels, 1.0f / dipScale);
display::Display display(sdkDisplayId);
DoUpdateDisplay(&display, base::android::ConvertJavaStringToUTF8(env, label),
dip_bounds, dip_work_area, bounds_in_pixels.size(), dipScale,
rotationDegrees, bitsPerPixel, bitsPerComponent,
isWideColorGamut && use_display_wide_color_gamut_, isHdr,
hdrMaxLuminanceRatio);
if (isInternal) {
display::AddInternalDisplayId(sdkDisplayId);
}
ProcessDisplayChanged(display, sdkDisplayId == primary_display_id_);
}
void DisplayAndroidManager::RemoveDisplay(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& jObject,
jint sdkDisplayId) {
display_list().RemoveDisplay(sdkDisplayId);
display::RemoveInternalDisplayId(sdkDisplayId);
}
void DisplayAndroidManager::SetPrimaryDisplayId(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& jObject,
jint sdkDisplayId) {
primary_display_id_ = sdkDisplayId;
}
} // namespace ui
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