Clean up ReaderMode OverlayPanel classes

chrome/browser/android/compositor/scene_layer/reader_mode_scene_layer.cc

-// Copyright 2016 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 "chrome/browser/android/compositor/scene_layer/reader_mode_scene_layer.h"
-
-#include "base/android/jni_android.h"
-#include "base/android/jni_array.h"
-#include "cc/layers/solid_color_layer.h"
-#include "chrome/browser/android/compositor/layer/reader_mode_layer.h"
-#include "content/public/browser/android/compositor.h"
-#include "content/public/browser/web_contents.h"
-#include "jni/ReaderModeSceneLayer_jni.h"
-#include "ui/android/resources/resource_manager_impl.h"
-#include "ui/android/view_android.h"
-#include "ui/gfx/android/java_bitmap.h"
-
-using base::android::JavaParamRef;
-
-namespace android {
-
-ReaderModeSceneLayer::ReaderModeSceneLayer(JNIEnv* env, jobject jobj)
-    : SceneLayer(env, jobj),
-      base_page_brightness_(1.0f),
-      content_container_(cc::Layer::Create()) {
-  // Responsible for moving the base page without modifying the layer itself.
-  content_container_->SetIsDrawable(true);
-  content_container_->SetPosition(gfx::PointF(0.0f, 0.0f));
-  layer()->AddChild(content_container_);
-}
-
-ReaderModeSceneLayer::~ReaderModeSceneLayer() {
-}
-
-void ReaderModeSceneLayer::CreateReaderModeLayer(
-    JNIEnv* env,
-    const JavaParamRef<jobject>& object,
-    const JavaParamRef<jobject>& jresource_manager) {
-  ui::ResourceManager* resource_manager =
-      ui::ResourceManagerImpl::FromJavaObject(jresource_manager);
-  reader_mode_layer_ = ReaderModeLayer::Create(resource_manager);
-
-  // The Reader Mode layer is initially invisible.
-  reader_mode_layer_->layer()->SetHideLayerAndSubtree(true);
-
-  layer()->AddChild(reader_mode_layer_->layer());
-}
-
-void ReaderModeSceneLayer::SetResourceIds(
-    JNIEnv* env,
-    const JavaParamRef<jobject>& object,
-    jint text_resource_id,
-    jint bar_background_resource_id,
-    jint bar_shadow_resource_id,
-    jint panel_icon_resource_id,
-    jint close_icon_resource_id) {
-  reader_mode_layer_->SetResourceIds(
-      text_resource_id, bar_background_resource_id, bar_shadow_resource_id,
-      panel_icon_resource_id, close_icon_resource_id, 0);
-}
-
-void ReaderModeSceneLayer::Update(
-    JNIEnv* env,
-    const JavaParamRef<jobject>& object,
-    jfloat dp_to_px,
-    jfloat base_page_brightness,
-    jfloat base_page_offset,
-    const JavaParamRef<jobject>& jweb_contents,
-    jfloat panel_X,
-    jfloat panel_y,
-    jfloat panel_width,
-    jfloat panel_height,
-    jfloat bar_margin_side,
-    jfloat bar_height,
-    jfloat text_opacity,
-    jboolean bar_border_visible,
-    jfloat bar_border_height,
-    jboolean bar_shadow_visible,
-    jfloat bar_shadow_opacity) {
-  // NOTE(mdjones): It is possible to render the panel before content has been
-  // created. If this is the case, do not attempt to access the WebContents
-  // and instead pass null.
-  content::WebContents* web_contents =
-      content::WebContents::FromJavaWebContents(jweb_contents);
-
-  scoped_refptr<cc::Layer> content_layer =
-      web_contents ? web_contents->GetNativeView()->GetLayer() : nullptr;
-
-  // Fade the base page out.
-  if (base_page_brightness_ != base_page_brightness) {
-    base_page_brightness_ = base_page_brightness;
-    cc::FilterOperations filters;
-    if (base_page_brightness < 1.f) {
-      filters.Append(
-          cc::FilterOperation::CreateBrightnessFilter(base_page_brightness));
-    }
-    content_container_->SetFilters(filters);
-  }
-
-  // Move the base page contents up.
-  content_container_->SetPosition(gfx::PointF(0.0f, base_page_offset));
-
-  reader_mode_layer_->SetProperties(
-      dp_to_px,
-      content_layer,
-      panel_X,
-      panel_y,
-      panel_width,
-      panel_height,
-      bar_margin_side,
-      bar_height,
-      text_opacity,
-      bar_border_visible,
-      bar_border_height,
-      bar_shadow_visible,
-      bar_shadow_opacity);
-
-  // Make the layer visible if it is not already.
-  reader_mode_layer_->layer()->SetHideLayerAndSubtree(false);
-}
-
-void ReaderModeSceneLayer::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() != content_container_->id())) {
-    content_container_->AddChild(content_tree->layer());
-  }
-}
-
-void ReaderModeSceneLayer::HideTree(JNIEnv* env,
-    const JavaParamRef<jobject>& jobj) {
-  // TODO(mdjones): Create super class for this logic.
-  if (reader_mode_layer_) {
-    reader_mode_layer_->layer()->SetHideLayerAndSubtree(true);
-  }
-  // Reset base page brightness.
-  cc::FilterOperations filters;
-  filters.Append(cc::FilterOperation::CreateBrightnessFilter(1.0f));
-  content_container_->SetFilters(filters);
-  // Reset base page offset.
-  content_container_->SetPosition(gfx::PointF(0.0f, 0.0f));
-}
-
-static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& jobj) {
-  // This will automatically bind to the Java object and pass ownership there.
-  ReaderModeSceneLayer* reader_mode_scene_layer =
-      new ReaderModeSceneLayer(env, jobj);
-  return reinterpret_cast<intptr_t>(reader_mode_scene_layer);
-}
-
-bool RegisterReaderModeSceneLayer(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-}  // namespace android