// Copyright 2018 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/scrolling_bottom_view_scene_layer.h"
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "cc/slim/layer.h"
#include "cc/slim/ui_resource_layer.h"
#include "ui/android/resources/resource_manager_impl.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "chrome/browser/ui/android/toolbar/jni_headers/ScrollingBottomViewSceneLayer_jni.h"
using base::android::JavaParamRef;
using base::android::JavaRef;
namespace android {
ScrollingBottomViewSceneLayer::ScrollingBottomViewSceneLayer(
JNIEnv* env,
const JavaRef<jobject>& jobj)
: SceneLayer(env, jobj),
should_show_background_(false),
background_color_(SK_ColorWHITE),
view_container_(cc::slim::Layer::Create()),
view_layer_(cc::slim::UIResourceLayer::Create()) {
layer()->SetIsDrawable(true);
view_container_->SetIsDrawable(true);
view_container_->SetMasksToBounds(true);
view_layer_->SetIsDrawable(true);
view_container_->AddChild(view_layer_);
}
ScrollingBottomViewSceneLayer::~ScrollingBottomViewSceneLayer() = default;
void ScrollingBottomViewSceneLayer::UpdateScrollingBottomViewLayer(
JNIEnv* env,
const JavaParamRef<jobject>& object,
const JavaParamRef<jobject>& jresource_manager,
jint view_resource_id,
jint shadow_height,
jfloat x_offset,
jfloat y_offset,
bool show_shadow) {
ui::ResourceManager* resource_manager =
ui::ResourceManagerImpl::FromJavaObject(jresource_manager);
ui::Resource* bottom_view_resource = resource_manager->GetResource(
ui::ANDROID_RESOURCE_TYPE_DYNAMIC, view_resource_id);
// If the resource isn't available, don't bother doing anything else.
if (!bottom_view_resource)
return;
view_layer_->SetUIResourceId(bottom_view_resource->ui_resource()->id());
int container_height = bottom_view_resource->size().height();
int texture_y_offset = 0;
// The view container layer's height depends on whether the shadow is
// showing. If the shadow should be clipped, reduce the height of the
// container.
if (!show_shadow) {
container_height -= shadow_height;
texture_y_offset -= shadow_height;
}
view_container_->SetBounds(
gfx::Size(bottom_view_resource->size().width(), container_height));
view_container_->SetPosition(gfx::PointF(0, y_offset - container_height));
// The view's layer should be the same size as the texture.
view_layer_->SetBounds(gfx::Size(bottom_view_resource->size().width(),
bottom_view_resource->size().height()));
view_layer_->SetPosition(gfx::PointF(x_offset, texture_y_offset));
}
void ScrollingBottomViewSceneLayer::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());
layer_->AddChild(view_container_);
}
// Propagate the background color up from the content layer.
should_show_background_ = content_tree->ShouldShowBackground();
background_color_ = content_tree->GetBackgroundColor();
}
SkColor ScrollingBottomViewSceneLayer::GetBackgroundColor() {
return background_color_;
}
bool ScrollingBottomViewSceneLayer::ShouldShowBackground() {
return should_show_background_;
}
static jlong JNI_ScrollingBottomViewSceneLayer_Init(
JNIEnv* env,
const JavaParamRef<jobject>& jobj) {
// This will automatically bind to the Java object and pass ownership there.
ScrollingBottomViewSceneLayer* scene_layer =
new ScrollingBottomViewSceneLayer(env, jobj);
return reinterpret_cast<intptr_t>(scene_layer);
}
} // namespace android