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| 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 <android/bitmap.h> | |
| 8 | |
| 9 #include "android_webview/public/browser/draw_sw.h" | |
| 10 #include "base/android/scoped_java_ref.h" | |
| 11 #include "base/memory/ptr_util.h" | |
| 12 #include "base/trace_event/trace_event.h" | |
| 13 #include "jni/JavaBrowserViewRendererHelper_jni.h" | |
| 14 #include "third_party/skia/include/core/SkBitmap.h" | |
| 15 #include "third_party/skia/include/core/SkRefCnt.h" | |
| 16 #include "third_party/skia/include/utils/SkCanvasStateUtils.h" | |
| 17 | |
| 18 using base::android::ScopedJavaLocalRef; | |
| 19 | |
| 20 namespace android_webview { | |
| 21 | |
| 22 namespace { | |
| 23 | |
| 24 // Provides software rendering functions from the Android glue layer. | |
| 25 // Allows preventing extra copies of data when rendering. | |
| 26 AwDrawSWFunctionTable* g_sw_draw_functions = NULL; | |
| 27 | |
| 28 class JavaCanvasHolder : public SoftwareCanvasHolder { | |
| 29 public: | |
| 30 JavaCanvasHolder(JNIEnv* env, | |
| 31 jobject java_canvas, | |
| 32 const gfx::Vector2d& scroll_correction); | |
| 33 ~JavaCanvasHolder() override; | |
| 34 | |
| 35 SkCanvas* GetCanvas() override; | |
| 36 | |
| 37 private: | |
| 38 AwPixelInfo* pixels_; | |
| 39 std::unique_ptr<SkCanvas> canvas_; | |
| 40 DISALLOW_COPY_AND_ASSIGN(JavaCanvasHolder); | |
| 41 }; | |
| 42 | |
| 43 JavaCanvasHolder::JavaCanvasHolder(JNIEnv* env, | |
| 44 jobject java_canvas, | |
| 45 const gfx::Vector2d& scroll) | |
| 46 : pixels_(nullptr) { | |
| 47 if (!g_sw_draw_functions) | |
| 48 return; | |
| 49 pixels_ = g_sw_draw_functions->access_pixels(env, java_canvas); | |
| 50 if (!pixels_ || !pixels_->state) | |
| 51 return; | |
| 52 | |
| 53 canvas_ = SkCanvasStateUtils::MakeFromCanvasState(pixels_->state); | |
| 54 // Workarounds for http://crbug.com/271096: SW draw only supports | |
| 55 // translate & scale transforms, and a simple rectangular clip. | |
| 56 if (canvas_ && (!canvas_->isClipRect() || | |
| 57 (canvas_->getTotalMatrix().getType() & | |
| 58 ~(SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)))) { | |
| 59 canvas_.reset(); | |
| 60 } | |
| 61 if (canvas_) { | |
| 62 canvas_->translate(scroll.x(), scroll.y()); | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 JavaCanvasHolder::~JavaCanvasHolder() { | |
| 67 if (pixels_) | |
| 68 g_sw_draw_functions->release_pixels(pixels_); | |
| 69 pixels_ = nullptr; | |
| 70 } | |
| 71 | |
| 72 SkCanvas* JavaCanvasHolder::GetCanvas() { | |
| 73 return canvas_.get(); | |
| 74 } | |
| 75 | |
| 76 class AuxiliaryCanvasHolder : public SoftwareCanvasHolder { | |
| 77 public: | |
| 78 AuxiliaryCanvasHolder(JNIEnv* env, | |
| 79 jobject java_canvas, | |
| 80 const gfx::Vector2d& scroll_correction, | |
| 81 const gfx::Size size); | |
| 82 ~AuxiliaryCanvasHolder() override; | |
| 83 | |
| 84 SkCanvas* GetCanvas() override; | |
| 85 | |
| 86 private: | |
| 87 ScopedJavaLocalRef<jobject> jcanvas_; | |
| 88 ScopedJavaLocalRef<jobject> jbitmap_; | |
| 89 gfx::Vector2d scroll_; | |
| 90 std::unique_ptr<SkBitmap> bitmap_; | |
| 91 std::unique_ptr<SkCanvas> canvas_; | |
| 92 DISALLOW_COPY_AND_ASSIGN(AuxiliaryCanvasHolder); | |
| 93 }; | |
| 94 | |
| 95 AuxiliaryCanvasHolder::AuxiliaryCanvasHolder( | |
| 96 JNIEnv* env, | |
| 97 jobject java_canvas, | |
| 98 const gfx::Vector2d& scroll_correction, | |
| 99 const gfx::Size size) | |
| 100 : jcanvas_(env, java_canvas), scroll_(scroll_correction) { | |
| 101 DCHECK(size.width() > 0); | |
| 102 DCHECK(size.height() > 0); | |
| 103 jbitmap_ = Java_JavaBrowserViewRendererHelper_createBitmap( | |
| 104 env, size.width(), size.height(), jcanvas_); | |
| 105 if (!jbitmap_.obj()) | |
| 106 return; | |
| 107 | |
| 108 AndroidBitmapInfo bitmap_info; | |
| 109 if (AndroidBitmap_getInfo(env, jbitmap_.obj(), &bitmap_info) < 0) { | |
| 110 LOG(ERROR) << "Error getting java bitmap info."; | |
| 111 return; | |
| 112 } | |
| 113 | |
| 114 void* pixels = nullptr; | |
| 115 if (AndroidBitmap_lockPixels(env, jbitmap_.obj(), &pixels) < 0) { | |
| 116 LOG(ERROR) << "Error locking java bitmap pixels."; | |
| 117 return; | |
| 118 } | |
| 119 | |
| 120 SkImageInfo info = | |
| 121 SkImageInfo::MakeN32Premul(bitmap_info.width, bitmap_info.height); | |
| 122 bitmap_.reset(new SkBitmap); | |
| 123 bitmap_->installPixels(info, pixels, bitmap_info.stride); | |
| 124 canvas_ = base::MakeUnique<SkCanvas>(*bitmap_); | |
| 125 } | |
| 126 | |
| 127 AuxiliaryCanvasHolder::~AuxiliaryCanvasHolder() { | |
| 128 bitmap_.reset(); | |
| 129 | |
| 130 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 131 if (AndroidBitmap_unlockPixels(env, jbitmap_.obj()) < 0) { | |
| 132 LOG(ERROR) << "Error unlocking java bitmap pixels."; | |
| 133 return; | |
| 134 } | |
| 135 | |
| 136 Java_JavaBrowserViewRendererHelper_drawBitmapIntoCanvas( | |
| 137 env, jbitmap_, jcanvas_, scroll_.x(), scroll_.y()); | |
| 138 } | |
| 139 | |
| 140 SkCanvas* AuxiliaryCanvasHolder::GetCanvas() { | |
| 141 return canvas_.get(); | |
| 142 } | |
| 143 | |
| 144 } // namespace | |
| 145 | |
| 146 void RasterHelperSetAwDrawSWFunctionTable(AwDrawSWFunctionTable* table) { | |
| 147 g_sw_draw_functions = table; | |
| 148 } | |
| 149 | |
| 150 // static | |
| 151 std::unique_ptr<SoftwareCanvasHolder> SoftwareCanvasHolder::Create( | |
| 152 jobject java_canvas, | |
| 153 const gfx::Vector2d& scroll_correction, | |
| 154 const gfx::Size& auxiliary_bitmap_size, | |
| 155 bool force_auxiliary_bitmap) { | |
| 156 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 157 std::unique_ptr<SoftwareCanvasHolder> holder; | |
| 158 if (!force_auxiliary_bitmap) { | |
| 159 holder.reset(new JavaCanvasHolder(env, java_canvas, scroll_correction)); | |
| 160 } | |
| 161 if (!holder.get() || !holder->GetCanvas()) { | |
| 162 holder.reset(); | |
| 163 holder.reset(new AuxiliaryCanvasHolder(env, java_canvas, scroll_correction, | |
| 164 auxiliary_bitmap_size)); | |
| 165 } | |
| 166 if (!holder->GetCanvas()) { | |
| 167 holder.reset(); | |
| 168 } | |
| 169 return holder; | |
| 170 } | |
| 171 | |
| 172 } // namespace android_webview | |
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Chromium Code Reviews
Issue 2863233002:
[WebView] Move files from native to browser (Closed)
