Prototype code that turns any/every flattenable into JSON

tools/debugger/SkDrawCommand.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkDrawCommand.h"
 
 #include "SkBlurMaskFilter.h"
 #include "SkColorFilter.h"
 #include "SkDashPathEffect.h"
 #include "SkImageFilter.h"
+#include "SkJsonWriteBuffer.h"
 #include "SkMaskFilter.h"
 #include "SkObjectParser.h"
 #include "SkPaintDefaults.h"
 #include "SkPathEffect.h"
 #include "SkPicture.h"
 #include "SkTextBlob.h"
 #include "SkTextBlobRunIterator.h"
 #include "SkTHash.h"
 #include "SkTypeface.h"
 #include "SkValidatingReadBuffer.h"
@@ skipping 31 matching lines @@
 #define SKDEBUGCANVAS_ATTRIBUTE_TEXTSIZE          "textSize"
 #define SKDEBUGCANVAS_ATTRIBUTE_TEXTSCALEX        "textScaleX"
 #define SKDEBUGCANVAS_ATTRIBUTE_TEXTSKEWX         "textSkewX"
 #define SKDEBUGCANVAS_ATTRIBUTE_DASHING           "dashing"
 #define SKDEBUGCANVAS_ATTRIBUTE_INTERVALS         "intervals"
 #define SKDEBUGCANVAS_ATTRIBUTE_PHASE             "phase"
 #define SKDEBUGCANVAS_ATTRIBUTE_FILLTYPE          "fillType"
 #define SKDEBUGCANVAS_ATTRIBUTE_VERBS             "verbs"
 #define SKDEBUGCANVAS_ATTRIBUTE_NAME              "name"
 #define SKDEBUGCANVAS_ATTRIBUTE_DATA              "data"
+#define SKDEBUGCANVAS_ATTRIBUTE_VALUES            "values"
 #define SKDEBUGCANVAS_ATTRIBUTE_SHADER            "shader"
 #define SKDEBUGCANVAS_ATTRIBUTE_PATHEFFECT        "pathEffect"
 #define SKDEBUGCANVAS_ATTRIBUTE_MASKFILTER        "maskFilter"
 #define SKDEBUGCANVAS_ATTRIBUTE_XFERMODE          "xfermode"
 #define SKDEBUGCANVAS_ATTRIBUTE_LOOPER            "looper"
 #define SKDEBUGCANVAS_ATTRIBUTE_BACKDROP          "backdrop"
 #define SKDEBUGCANVAS_ATTRIBUTE_COLORFILTER       "colorfilter"
 #define SKDEBUGCANVAS_ATTRIBUTE_IMAGEFILTER       "imagefilter"
 #define SKDEBUGCANVAS_ATTRIBUTE_IMAGE             "image"
 #define SKDEBUGCANVAS_ATTRIBUTE_BITMAP            "bitmap"
@@ skipping 509 matching lines @@
 
 static void encode_data(const void* bytes, size_t count, const char* contentType,
                         UrlDataManager& urlDataManager, Json::Value* target) {
     SkAutoTUnref<SkData> data(SkData::NewWithCopy(bytes, count));
     SkString url = urlDataManager.addData(data, contentType);
     *target = Json::Value(url.c_str());
 }
 
 static void flatten(const SkFlattenable* flattenable, Json::Value* target,
                     UrlDataManager& urlDataManager) {
-    SkWriteBuffer buffer;
+    SkBinaryWriteBuffer buffer;
     flattenable->flatten(buffer);
     void* data = sk_malloc_throw(buffer.bytesWritten());
     buffer.writeToMemory(data);
     Json::Value jsonData;
     encode_data(data, buffer.bytesWritten(), "application/octet-stream", urlDataManager, &jsonData);
     Json::Value jsonFlattenable;
     jsonFlattenable[SKDEBUGCANVAS_ATTRIBUTE_NAME] = Json::Value(flattenable->getTypeName());
     jsonFlattenable[SKDEBUGCANVAS_ATTRIBUTE_DATA] = jsonData;
+
+    SkJsonWriteBuffer jsonBuffer(&urlDataManager);
+    flattenable->flatten(jsonBuffer);
+    jsonFlattenable[SKDEBUGCANVAS_ATTRIBUTE_VALUES] = jsonBuffer.getValue();
+
     (*target) = jsonFlattenable;
     sk_free(data);
 }
 
 static void write_png_callback(png_structp png_ptr, png_bytep data, png_size_t length) {
     SkWStream* out = (SkWStream*) png_get_io_ptr(png_ptr);
     out->write(data, length);
 }
 
 void SkDrawCommand::WritePNG(const png_bytep rgba, png_uint_32 width, png_uint_32 height,
@@ skipping 22 matching lines @@
     }
     png_set_filter(png, 0, PNG_NO_FILTERS);
     png_set_rows(png, info_ptr, &rows[0]);
     png_set_write_fn(png, &out, write_png_callback, NULL);
     png_write_png(png, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
     png_destroy_write_struct(&png, NULL);
     sk_free(rows);
     sk_free(pixels);
 }
 
-static bool SK_WARN_UNUSED_RESULT flatten(const SkImage& image, Json::Value* target,
-                                          UrlDataManager& urlDataManager) {
+bool SK_WARN_UNUSED_RESULT flatten(const SkImage& image, Json::Value* target,
+                                   UrlDataManager& urlDataManager) {
     size_t rowBytes = 4 * image.width();
     SkAutoFree buffer(sk_malloc_throw(rowBytes * image.height()));
     SkImageInfo dstInfo = SkImageInfo::Make(image.width(), image.height(),
                                             kN32_SkColorType, kPremul_SkAlphaType);
     if (!image.readPixels(dstInfo, buffer.get(), rowBytes, 0, 0)) {
         SkDebugf("readPixels failed\n");
         return false;
     }
     SkDynamicMemoryWStream out;
     SkDrawCommand::WritePNG((png_bytep) buffer.get(), image.width(), image.height(), out);
@@ skipping 150 matching lines @@
 static sk_sp<SkImage> load_image(const Json::Value& jsonImage, UrlDataManager& urlDataManager) {
     SkBitmap* bitmap = load_bitmap(jsonImage, urlDataManager);
     if (bitmap == nullptr) {
         return nullptr;
     }
     auto result = SkImage::MakeFromBitmap(*bitmap);
     delete bitmap;
     return result;
 }
 
-static bool SK_WARN_UNUSED_RESULT flatten(const SkBitmap& bitmap, Json::Value* target,
-                                          UrlDataManager& urlDataManager) {
+bool SK_WARN_UNUSED_RESULT flatten(const SkBitmap& bitmap, Json::Value* target,
+                                   UrlDataManager& urlDataManager) {
     bitmap.lockPixels();
     sk_sp<SkImage> image(SkImage::MakeFromBitmap(bitmap));
     bitmap.unlockPixels();
     (*target)[SKDEBUGCANVAS_ATTRIBUTE_COLOR] = Json::Value(color_type_name(bitmap.colorType()));
     (*target)[SKDEBUGCANVAS_ATTRIBUTE_ALPHA] = Json::Value(alpha_type_name(bitmap.alphaType()));
     bool success = flatten(*image, target, urlDataManager);
     return success;
 }
 
 static void apply_paint_color(const SkPaint& paint, Json::Value* target) {
@@ skipping 2297 matching lines @@
     result[SKDEBUGCANVAS_ATTRIBUTE_MATRIX] = MakeJsonMatrix(fMatrix);
     return result;
 }
 
 SkSetMatrixCommand* SkSetMatrixCommand::fromJSON(Json::Value& command,
                                                  UrlDataManager& urlDataManager) {
     SkMatrix matrix;
     extract_json_matrix(command[SKDEBUGCANVAS_ATTRIBUTE_MATRIX], &matrix);
     return new SkSetMatrixCommand(matrix);
 }