android_webview/native/aw_picture.cc

   1 // Copyright 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/aw_picture.h"
   6
   7 #include "android_webview/browser/in_process_view_renderer.h"
   8 #include "android_webview/native/java_browser_view_renderer_helper.h"
   9 #include "jni/AwPicture_jni.h"
  10 #include "third_party/skia/include/core/SkPicture.h"
  11
  12 namespace android_webview {
  13
  14 AwPicture::AwPicture(skia::RefPtr<SkPicture> picture)
  15     : picture_(picture) {
  16   DCHECK(picture_);
  17 }
  18
  19 AwPicture::~AwPicture() {}
  20
  21 void AwPicture::Destroy(JNIEnv* env, jobject obj) {
  22   delete this;
  23 }
  24
  25 jint AwPicture::GetWidth(JNIEnv* env, jobject obj) {
  26   return picture_->width();
  27 }
  28
  29 jint AwPicture::GetHeight(JNIEnv* env, jobject obj) {
  30   return picture_->height();
  31 }
  32
  33 namespace {
  34 bool RenderPictureToCanvas(SkPicture* picture, SkCanvas* canvas) {
  35   picture->draw(canvas);
  36   return true;
  37 }
  38 }
  39
  40 void AwPicture::Draw(JNIEnv* env, jobject obj, jobject canvas,
  41                      jint left, jint top, jint right, jint bottom) {
  42   bool ok = InProcessViewRenderer::RenderViaAuxilaryBitmapIfNeeded(
  43       canvas,
  44       JavaBrowserViewRendererHelper::GetInstance(),
  45       gfx::Vector2d(),
  46       gfx::Rect(left, top, right - left, bottom - top),
  47       base::Bind(&RenderPictureToCanvas, base::Unretained(picture_.get())),
  48       this);
  49   LOG_IF(ERROR, !ok) << "Couldn't draw picture";
  50 }
  51
  52 bool RegisterAwPicture(JNIEnv* env) {
  53   return RegisterNativesImpl(env) >= 0;
  54 }
  55
  56 }  // namespace android_webview