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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/android/compositor/scene_layer/overscroll_scene_layer.h"
#include "ui/android/resources/resource_manager_impl.h"
#include "ui/android/window_android.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "chrome/android/chrome_jni_headers/OverscrollSceneLayer_jni.h"
using base::android::JavaParamRef;
namespace android {
OverscrollSceneLayer::OverscrollSceneLayer(JNIEnv* env,
const JavaParamRef<jobject>& jobj,
const JavaParamRef<jobject>& jwindow)
: SceneLayer(env, jobj),
window_(ui::WindowAndroid::FromJavaWindowAndroid(jwindow)),
glow_effect_(std::make_unique<ui::OverscrollGlow>(this)) {
window_->AddObserver(this);
}
OverscrollSceneLayer::~OverscrollSceneLayer() {}
std::unique_ptr<ui::EdgeEffect> OverscrollSceneLayer::CreateEdgeEffect() {
return std::make_unique<ui::EdgeEffect>(resource_manager_);
}
void OverscrollSceneLayer::Prepare(JNIEnv* env,
const JavaParamRef<jobject>& obj,
jfloat start_x,
jfloat start_y,
jint width,
jint height) {
start_pos_ = gfx::Vector2dF(start_x, start_y);
const gfx::SizeF viewport_size(width, height);
if (!glow_effect_) {
return;
}
// |OverscrollGlow| activates glow effect only when content is bigger than
// viewport. Make it bigger by 1.f.
const gfx::SizeF content_size(width + 1.f, height);
const gfx::PointF content_scroll_offset(1, 0);
glow_effect_->OnFrameUpdated(viewport_size, content_size,
content_scroll_offset);
}
jboolean OverscrollSceneLayer::Update(
JNIEnv* env,
const JavaParamRef<jobject>& object,
const JavaParamRef<jobject>& jresource_manager,
jfloat accumulated_overscroll_x,
jfloat delta_x) {
if (!resource_manager_) {
if (jresource_manager.is_null()) {
return false;
}
resource_manager_ =
ui::ResourceManagerImpl::FromJavaObject(jresource_manager);
}
gfx::Vector2dF accumulated_overscroll(accumulated_overscroll_x, 0);
gfx::Vector2dF overscroll_delta(delta_x, 0);
if (glow_effect_ && glow_effect_->OnOverscrolled(
base::TimeTicks::Now(), accumulated_overscroll,
overscroll_delta, gfx::Vector2dF(0, 0), start_pos_)) {
window_->SetNeedsAnimate();
return true;
}
return false;
}
void OverscrollSceneLayer::OnAnimate(base::TimeTicks frame_time) {
if (glow_effect_ && glow_effect_->Animate(frame_time, layer().get())) {
window_->SetNeedsAnimate();
}
}
void OverscrollSceneLayer::OnAttachCompositor() {
window_->AddObserver(this);
}
void OverscrollSceneLayer::OnDetachCompositor() {
window_->RemoveObserver(this);
}
void OverscrollSceneLayer::SetContentTree(
JNIEnv* env,
const JavaParamRef<jobject>& jobj,
const JavaParamRef<jobject>& jcontent_tree) {
SceneLayer* content_tree = FromJavaObject(env, jcontent_tree);
if (!content_tree || !content_tree->layer()) {
return;
}
if (!content_tree->layer()->parent() ||
(content_tree->layer()->parent()->id() != layer()->id())) {
layer()->AddChild(content_tree->layer());
}
}
void OverscrollSceneLayer::OnReset(JNIEnv* env,
const JavaParamRef<jobject>& obj) {
glow_effect_->Reset();
}
static jlong JNI_OverscrollSceneLayer_Init(
JNIEnv* env,
const JavaParamRef<jobject>& jobj,
const JavaParamRef<jobject>& jwindow) {
// This will automatically bind to the Java object and pass ownership there.
OverscrollSceneLayer* tree_provider =
new OverscrollSceneLayer(env, jobj, jwindow);
return reinterpret_cast<intptr_t>(tree_provider);
}
} // namespace android
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