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

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/android/compositor/scene_layer/reader_mode_scene_layer.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "chrome/browser/android/compositor/layer/reader_mode_layer.h"
   9 #include "content/public/browser/android/content_view_core.h"
  10 #include "jni/ReaderModeSceneLayer_jni.h"
  11 #include "ui/android/resources/resource_manager_impl.h"
  12
  13 namespace chrome {
  14 namespace android {
  15
  16 ReaderModeSceneLayer::ReaderModeSceneLayer(JNIEnv* env, jobject jobj)
  17     : SceneLayer(env, jobj) {
  18 }
  19
  20 ReaderModeSceneLayer::~ReaderModeSceneLayer() {
  21 }
  22
  23 void ReaderModeSceneLayer::UpdateReaderModeLayer(
  24     JNIEnv* env,
  25     jobject object,
  26     jint panel_background_resource_id,
  27     jint panel_text_resource_id,
  28     jobject jreader_mode_content_view_core,
  29     jfloat panel_y,
  30     jfloat panel_width,
  31     jfloat panel_margin_top,
  32     jfloat panel_height,
  33     jfloat distilled_y,
  34     jfloat distilled_height,
  35     jfloat x,
  36     jfloat panel_text_opacity,
  37     jint header_background_color,
  38     jobject jresource_manager) {
  39   ui::ResourceManager* resource_manager =
  40       ui::ResourceManagerImpl::FromJavaObject(jresource_manager);
  41   // Lazily construct the reader mode layer, as the feature is only
  42   // conditionally enabled.
  43   if (!reader_mode_layer_.get()) {
  44     if (!resource_manager)
  45       return;
  46     reader_mode_layer_ = ReaderModeLayer::Create(resource_manager);
  47     layer_->AddChild(reader_mode_layer_->layer());
  48   }
  49
  50   // NOTE(pedrosimonetti): The ContentViewCore might not exist at this time if
  51   // the Reader Mode has not been requested yet. In this case,
  52   // we'll pass NULL to Reader Mode's Layer Tree.
  53   content::ContentViewCore* content_view_core =
  54       !jreader_mode_content_view_core ? NULL
  55                           : content::ContentViewCore::GetNativeContentViewCore(
  56                                 env, jreader_mode_content_view_core);
  57
  58   reader_mode_layer_->SetProperties(
  59       panel_background_resource_id, panel_text_resource_id,
  60       content_view_core,
  61       panel_y, panel_width, panel_margin_top, panel_height,
  62       distilled_y, distilled_height,
  63       x,
  64       panel_text_opacity, header_background_color);
  65 }
  66
  67 static jlong Init(JNIEnv* env, jobject jobj) {
  68   // This will automatically bind to the Java object and pass ownership there.
  69   ReaderModeSceneLayer* tree_provider =
  70       new ReaderModeSceneLayer(env, jobj);
  71   return reinterpret_cast<intptr_t>(tree_provider);
  72 }
  73
  74 bool RegisterReaderModeSceneLayer(JNIEnv* env) {
  75   return RegisterNativesImpl(env);
  76 }
  77
  78 }  // namespace android
  79 }  // namespace chrome