android_webview/native/java_browser_view_renderer_helper.cc

   1 // Copyright (c) 2013 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 "android_webview/native/java_browser_view_renderer_helper.h"
   6
   7 #include "base/debug/trace_event.h"
   8 #include "jni/JavaBrowserViewRendererHelper_jni.h"
   9
  10 using base::android::JavaRef;
  11 using base::android::ScopedJavaLocalRef;
  12
  13 namespace android_webview {
  14
  15 JavaBrowserViewRendererHelper::JavaBrowserViewRendererHelper() {
  16 }
  17
  18 JavaBrowserViewRendererHelper::~JavaBrowserViewRendererHelper() {
  19 }
  20
  21 // static
  22 JavaBrowserViewRendererHelper* JavaBrowserViewRendererHelper::GetInstance() {
  23   static JavaBrowserViewRendererHelper* g_instance =
  24       new JavaBrowserViewRendererHelper;
  25   return g_instance;
  26 }
  27
  28 ScopedJavaLocalRef<jobject> JavaBrowserViewRendererHelper::CreateBitmap(
  29     JNIEnv* env,
  30     int width,
  31     int height,
  32     const base::android::JavaRef<jobject>& jcanvas,
  33     void* owner_key) {
  34   TRACE_EVENT0("android_webview", "RendererHelper::CreateBitmap");
  35   return width <= 0 || height <= 0 ? ScopedJavaLocalRef<jobject>() :
  36       Java_JavaBrowserViewRendererHelper_createBitmap(
  37           env, width, height, jcanvas.obj(),
  38           reinterpret_cast<jint>(owner_key));
  39 }
  40
  41 void JavaBrowserViewRendererHelper::DrawBitmapIntoCanvas(
  42     JNIEnv* env,
  43     const JavaRef<jobject>& jbitmap,
  44     const JavaRef<jobject>& jcanvas,
  45     int x,
  46     int y) {
  47   TRACE_EVENT0("android_webview", "RendererHelper::DrawBitmapIntoCanvas");
  48   Java_JavaBrowserViewRendererHelper_drawBitmapIntoCanvas(
  49       env, jbitmap.obj(), jcanvas.obj(), x, y);
  50 }
  51
  52 ScopedJavaLocalRef<jobject>
  53 JavaBrowserViewRendererHelper::RecordBitmapIntoPicture(
  54     JNIEnv* env,
  55     const JavaRef<jobject>& jbitmap) {
  56   TRACE_EVENT0("android_webview", "RendererHelper::RecordBitmapIntoPicture");
  57   return Java_JavaBrowserViewRendererHelper_recordBitmapIntoPicture(
  58       env, jbitmap.obj());
  59 }
  60
  61 bool RegisterJavaBrowserViewRendererHelper(JNIEnv* env) {
  62   return RegisterNativesImpl(env) >= 0;
  63 }
  64
  65 }  // namespace android_webview