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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/thin_webview/internal/compositor_view_impl.h"
#include <memory>
#include "base/android/jni_android.h"
#include "cc/slim/layer.h"
#include "cc/slim/solid_color_layer.h"
#include "content/public/browser/android/compositor.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/android/color_utils_android.h"
#include "ui/android/window_android.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "components/thin_webview/internal/jni_headers/CompositorViewImpl_jni.h"
using base::android::JavaParamRef;
using base::android::JavaRef;
namespace thin_webview {
namespace android {
namespace {
const int kPixelFormatUnknown = 0;
} // namespace
jlong JNI_CompositorViewImpl_Init(JNIEnv* env,
const JavaParamRef<jobject>& obj,
const JavaParamRef<jobject>& jwindow_android,
jint java_background_color) {
ui::WindowAndroid* window_android =
ui::WindowAndroid::FromJavaWindowAndroid(jwindow_android);
auto compositor_view = std::make_unique<CompositorViewImpl>(
env, obj, window_android, java_background_color);
return reinterpret_cast<intptr_t>(compositor_view.release());
}
// static
CompositorView* CompositorView::FromJavaObject(
const base::android::JavaRef<jobject>& jcompositor_view) {
if (jcompositor_view.is_null())
return nullptr;
return reinterpret_cast<CompositorViewImpl*>(
Java_CompositorViewImpl_getNativePtr(base::android::AttachCurrentThread(),
jcompositor_view));
}
CompositorViewImpl::CompositorViewImpl(JNIEnv* env,
jobject obj,
ui::WindowAndroid* window_android,
int64_t java_background_color)
: obj_(env, obj),
root_layer_(cc::slim::SolidColorLayer::Create()),
current_surface_format_(kPixelFormatUnknown) {
compositor_.reset(content::Compositor::Create(this, window_android));
root_layer_->SetIsDrawable(true);
std::optional<SkColor> background_color =
ui::JavaColorToOptionalSkColor(java_background_color);
// TODO(crbug.com/40219248): Remove FromColor and make all SkColor4f.
root_layer_->SetBackgroundColor(
SkColor4f::FromColor(background_color.value()));
}
CompositorViewImpl::~CompositorViewImpl() = default;
void CompositorViewImpl::Destroy(JNIEnv* env,
const JavaParamRef<jobject>& object) {
delete this;
}
void CompositorViewImpl::SurfaceCreated(JNIEnv* env,
const JavaParamRef<jobject>& object) {
compositor_->SetRootLayer(root_layer_);
current_surface_format_ = kPixelFormatUnknown;
}
void CompositorViewImpl::SurfaceDestroyed(JNIEnv* env,
const JavaParamRef<jobject>& object) {
// When we switch from Chrome to other app we can't detach child surface
// controls because it leads to a visible hole: b/157439199. To avoid this we
// don't detach surfaces if the surface is going to be destroyed, they will be
// detached and freed by OS.
compositor_->PreserveChildSurfaceControls();
compositor_->SetSurface(nullptr, false, nullptr);
current_surface_format_ = kPixelFormatUnknown;
}
void CompositorViewImpl::SurfaceChanged(JNIEnv* env,
const JavaParamRef<jobject>& object,
jint format,
jint width,
jint height,
bool can_be_used_with_surface_control,
const JavaParamRef<jobject>& surface) {
DCHECK(surface);
if (current_surface_format_ != format) {
current_surface_format_ = format;
compositor_->SetSurface(surface, can_be_used_with_surface_control, nullptr);
}
gfx::Size content_size(width, height);
compositor_->SetWindowBounds(content_size);
root_layer_->SetBounds(content_size);
}
void CompositorViewImpl::SetNeedsComposite(
JNIEnv* env,
const JavaParamRef<jobject>& object) {
compositor_->SetNeedsComposite();
}
void CompositorViewImpl::SetRootLayer(scoped_refptr<cc::slim::Layer> layer) {
const auto& children = root_layer_->children();
DCHECK(children.size() <= 1);
if (!children.empty() && children[0]->id() == layer->id())
return;
root_layer_->RemoveAllChildren();
root_layer_->InsertChild(layer, 0);
}
void CompositorViewImpl::RecreateSurface() {
JNIEnv* env = base::android::AttachCurrentThread();
compositor_->SetSurface(nullptr, false, nullptr);
Java_CompositorViewImpl_recreateSurface(env, obj_);
}
void CompositorViewImpl::UpdateLayerTreeHost() {
JNIEnv* env = base::android::AttachCurrentThread();
Java_CompositorViewImpl_onCompositorLayout(env, obj_);
}
} // namespace android
} // namespace thin_webview
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