| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // Provides a webviewchromium glue layer adapter from the internal Android |
| // graphics types into the types the chromium stack expects, and back. |
| |
| #define LOG_TAG "webviewchromium_plat_support" |
| |
| #include "android_webview/public/browser/draw_gl.h" |
| #include "android_webview/public/browser/draw_sw.h" |
| |
| #include <cstdlib> |
| #include <jni.h> |
| #include <utils/Log.h> |
| #include <utils/UniquePtr.h> |
| #include <utils/Vector.h> |
| #include "graphic_buffer_impl.h" |
| #include "GraphicsJNI.h" |
| #include "SkGraphics.h" |
| #include "SkPicture.h" |
| |
| #define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0]))) |
| |
| namespace android { |
| namespace { |
| |
| class PixelInfo : public AwPixelInfo { |
| public: |
| PixelInfo(SkCanvas* canvas, const SkBitmap* bitmap); |
| ~PixelInfo(); |
| |
| void AddRectToClip(const SkIRect& rect); |
| |
| private: |
| const SkBitmap* bitmap_; |
| SkAutoLockPixels bitmap_locker_; |
| Vector<int> clip_rect_storage_; |
| }; |
| |
| class ClipValidator : public SkCanvas::ClipVisitor { |
| public: |
| ClipValidator() : failed_(false) {} |
| bool failed() { return failed_; } |
| |
| // ClipVisitor |
| virtual void clipRect(const SkRect& rect, SkRegion::Op op, bool antialias) { |
| failed_ |= antialias; |
| } |
| |
| virtual void clipPath(const SkPath&, SkRegion::Op, bool antialias) { |
| failed_ |= antialias; |
| } |
| |
| private: |
| bool failed_; |
| }; |
| |
| PixelInfo::PixelInfo(SkCanvas* canvas, const SkBitmap* bitmap) |
| : bitmap_(bitmap), |
| bitmap_locker_(*bitmap) { |
| memset(this, 0, sizeof(AwPixelInfo)); |
| version = kAwPixelInfoVersion; |
| } |
| |
| PixelInfo::~PixelInfo() {} |
| |
| void PixelInfo::AddRectToClip(const SkIRect& rect) { |
| ALOG_ASSERT(rect.width() >= 0 && rect.height() >= 0); |
| clip_rect_storage_.push_back(rect.x()); |
| clip_rect_storage_.push_back(rect.y()); |
| clip_rect_storage_.push_back(rect.width()); |
| clip_rect_storage_.push_back(rect.height()); |
| clip_rects = const_cast<int*>(clip_rect_storage_.array()); |
| clip_rect_count = clip_rect_storage_.size() / 4; |
| } |
| |
| PixelInfo* TryToCreatePixelInfo(SkCanvas* canvas) { |
| // Check the clip can decompose into simple rectangles. This validator is |
| // not a perfect guarantee, but it's the closest I can do with the current |
| // API. TODO: compile this out in release builds as currently Java canvases |
| // do not allow for antialiased clip. |
| ClipValidator validator; |
| canvas->replayClips(&validator); |
| if (validator.failed()) |
| return NULL; |
| |
| SkCanvas::LayerIter layer(SkCanvas::LayerIter(canvas, false)); |
| if (layer.done()) |
| return NULL; |
| SkDevice* device = layer.device(); |
| if (!device) |
| return NULL; |
| const SkBitmap* bitmap = &device->accessBitmap(true); |
| if (!bitmap->lockPixelsAreWritable()) |
| return NULL; |
| const SkRegion& region = layer.clip(); |
| layer.next(); |
| // Currently don't handle multiple layers well, so early out |
| // TODO: Return all layers in PixelInfo |
| if (!layer.done()) |
| return NULL; |
| |
| UniquePtr<PixelInfo> pixels(new PixelInfo(canvas, bitmap)); |
| pixels->config = |
| bitmap->config() == SkBitmap::kARGB_8888_Config ? AwConfig_ARGB_8888 : |
| bitmap->config() == SkBitmap::kARGB_4444_Config ? AwConfig_ARGB_4444 : |
| bitmap->config() == SkBitmap::kRGB_565_Config ? AwConfig_RGB_565 : -1; |
| if (pixels->config < 0) |
| return NULL; |
| |
| pixels->width = bitmap->width(); |
| pixels->height = bitmap->height(); |
| pixels->row_bytes = bitmap->rowBytes(); |
| pixels->pixels = bitmap->getPixels(); |
| const SkMatrix& matrix = layer.matrix(); |
| for (int i = 0; i < 9; i++) { |
| pixels->matrix[i] = matrix.get(i); |
| } |
| |
| if (region.isEmpty()) { |
| pixels->AddRectToClip(region.getBounds()); |
| } else { |
| SkRegion::Iterator clip_iterator(region); |
| for (; !clip_iterator.done(); clip_iterator.next()) { |
| pixels->AddRectToClip(clip_iterator.rect()); |
| } |
| } |
| |
| // WebViewClassic used the DrawFilter for its own purposes (e.g. disabling |
| // dithering when zooming/scrolling) so for now at least, just ignore any |
| // client supplied DrawFilter. |
| ALOGW_IF(canvas->getDrawFilter(), |
| "DrawFilter not supported in webviewchromium, will be ignored"); |
| return pixels.release(); |
| } |
| |
| AwPixelInfo* GetPixels(JNIEnv* env, jobject java_canvas) { |
| SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, java_canvas); |
| if (!canvas) |
| return NULL; |
| |
| return TryToCreatePixelInfo(canvas); |
| } |
| |
| void ReleasePixels(AwPixelInfo* pixels) { |
| delete static_cast<PixelInfo*>(pixels); |
| } |
| |
| jobject CreatePicture(JNIEnv* env, SkPicture* picture) { |
| jclass clazz = env->FindClass("android/graphics/Picture"); |
| jmethodID constructor = env->GetMethodID(clazz, "<init>", "(IZ)V"); |
| ALOG_ASSERT(clazz); |
| ALOG_ASSERT(constructor); |
| return env->NewObject(clazz, constructor, picture, false); |
| } |
| |
| bool IsSkiaVersionCompatible(SkiaVersionFunction function) { |
| bool compatible = false; |
| if (function && function == &SkGraphics::GetVersion) { |
| int android_major, android_minor, android_patch; |
| SkGraphics::GetVersion(&android_major, &android_minor, &android_patch); |
| |
| int chromium_major, chromium_minor, chromium_patch; |
| (*function)(&chromium_major, &chromium_minor, &chromium_patch); |
| |
| compatible = android_major == chromium_major && |
| android_minor == chromium_minor && |
| android_patch == chromium_patch; |
| } |
| return compatible; |
| } |
| |
| jint GetDrawSWFunctionTable(JNIEnv* env, jclass) { |
| static const AwDrawSWFunctionTable function_table = { |
| &GetPixels, |
| &ReleasePixels, |
| &CreatePicture, |
| &IsSkiaVersionCompatible, |
| }; |
| return reinterpret_cast<jint>(&function_table); |
| } |
| |
| jint GetDrawGLFunctionTable(JNIEnv* env, jclass) { |
| static const AwDrawGLFunctionTable function_table = { |
| &GraphicBufferImpl::Create, |
| &GraphicBufferImpl::Release, |
| &GraphicBufferImpl::MapStatic, |
| &GraphicBufferImpl::UnmapStatic, |
| &GraphicBufferImpl::GetNativeBufferStatic, |
| &GraphicBufferImpl::GetStrideStatic, |
| }; |
| return reinterpret_cast<jint>(&function_table); |
| } |
| |
| const char kClassName[] = "com/android/webview/chromium/GraphicsUtils"; |
| const JNINativeMethod kJniMethods[] = { |
| { "nativeGetDrawSWFunctionTable", "()I", |
| reinterpret_cast<void*>(GetDrawSWFunctionTable) }, |
| { "nativeGetDrawGLFunctionTable", "()I", |
| reinterpret_cast<void*>(GetDrawGLFunctionTable) }, |
| }; |
| |
| } // namespace |
| |
| void RegisterGraphicsUtils(JNIEnv* env) { |
| jclass clazz = env->FindClass(kClassName); |
| LOG_ALWAYS_FATAL_IF(!clazz, "Unable to find class '%s'", kClassName); |
| |
| int res = env->RegisterNatives(clazz, kJniMethods, NELEM(kJniMethods)); |
| LOG_ALWAYS_FATAL_IF(res < 0, "register native methods failed: res=%d", res); |
| } |
| |
| } // namespace android |