Initial support for turning Skia draws into a JSON document and vice versa.
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1636563002
Review URL: https://codereview.chromium.org/1636563002
diff --git a/gyp/json.gyp b/gyp/json.gyp
new file mode 100644
index 0000000..6507f46
--- /dev/null
+++ b/gyp/json.gyp
@@ -0,0 +1,27 @@
+# Copyright 2015 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+{
+ 'targets': [
+ {
+ 'target_name': 'json',
+ 'product_name': 'skia_json',
+ 'type': 'static_library',
+ 'standalone_static_library': 1,
+ 'dependencies': [
+ 'core.gyp:core',
+ 'jsoncpp.gyp:jsoncpp',
+ ],
+ 'include_dirs': [
+ '../include/json',
+ '../include/utils',
+ '../src/core',
+ ],
+ 'sources': [
+ '<(skia_src_path)/json/SkJSONCanvas.cpp',
+ '<(skia_src_path)/json/SkJSONRenderer.cpp',
+ ],
+ },
+ ],
+}
diff --git a/gyp/most.gyp b/gyp/most.gyp
index dac0685..22be29b 100644
--- a/gyp/most.gyp
+++ b/gyp/most.gyp
@@ -82,6 +82,7 @@
[ 'skia_build_server', {
'dependencies': [
'skiaserve.gyp:skiaserve',
+ 'json.gyp:json',
],
}],
],
diff --git a/src/json/SkJSONCanvas.cpp b/src/json/SkJSONCanvas.cpp
new file mode 100644
index 0000000..f60ee27
--- /dev/null
+++ b/src/json/SkJSONCanvas.cpp
@@ -0,0 +1,428 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkJSONCanvas.h"
+#include "SkPath.h"
+#include "SkRRect.h"
+#include "stdio.h"
+#include "stdlib.h"
+
+SkJSONCanvas::SkJSONCanvas(int width, int height, SkWStream& out)
+ : INHERITED(width, height)
+ , fOut(out)
+ , fFirstCommand(true) {
+ fOut.writeText("{\"" SKJSONCANVAS_VERSION "\":1, \"" SKJSONCANVAS_COMMANDS
+ "\":[");
+}
+
+void SkJSONCanvas::finish() {
+ fOut.writeText("]}");
+}
+
+void SkJSONCanvas::writef(const char* format, ...) {
+ va_list args;
+ va_start(args, format);
+ SkString s;
+ s.appendVAList(format, args);
+ fOut.writeText(s.c_str());
+}
+
+void SkJSONCanvas::open(const char* name) {
+ if (fFirstCommand) {
+ fFirstCommand = false;
+ }
+ else {
+ fOut.writeText(",");
+ }
+ this->writef("{\"" SKJSONCANVAS_COMMAND "\":\"%s\"", name);
+}
+
+void SkJSONCanvas::close() {
+ fOut.writeText("}");
+}
+
+void SkJSONCanvas::writeString(const char* name, const char* text) {
+ this->writeString(name, text, strlen(text));
+}
+
+void SkJSONCanvas::writeString(const char* name, const void* text, size_t length) {
+ // TODO: escaping
+ this->writef(",\"%s\":\"", name);
+ fOut.write(text, length);
+ fOut.writeText("\"");
+}
+
+void SkJSONCanvas::writePoint(const char* name, const SkPoint& point) {
+ this->writef(",\"%s\":[%f, %f]", name, point.x(), point.y());
+}
+
+void SkJSONCanvas::writeRect(const char* name, const SkRect& rect) {
+ this->writef(",\"%s\":[%f, %f, %f, %f]", name, rect.left(), rect.top(), rect.right(),
+ rect.bottom());
+}
+
+void SkJSONCanvas::writeRRect(const char* name, const SkRRect& rrect) {
+ SkRect rect = rrect.rect();
+ SkVector corner1 = rrect.radii(SkRRect::kUpperLeft_Corner);
+ SkVector corner2 = rrect.radii(SkRRect::kUpperRight_Corner);
+ SkVector corner3 = rrect.radii(SkRRect::kLowerLeft_Corner);
+ SkVector corner4 = rrect.radii(SkRRect::kLowerRight_Corner);
+ this->writef(",\"%s\":[[%f, %f, %f, %f],[%f, %f],[%f, %f],[%f, %f],[%f, %f]]", name,
+ rect.left(), rect.top(), rect.right(), rect.bottom(), corner1.x(), corner1.y(),
+ corner2.x(), corner2.y(), corner3.x(), corner3.y(), corner4.x(), corner4.y());
+}
+
+void SkJSONCanvas::writePath(const char* name, const SkPath& path) {
+ SkString text("[");
+ SkPath::Iter iter(path, false);
+ SkPoint pts[4];
+ bool first = true;
+ SkPath::Verb verb;
+ while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
+ if (first) {
+ first = false;
+ }
+ else {
+ text.append(",");
+ }
+ switch (verb) {
+ case SkPath::kLine_Verb:
+ text.appendf("{\"" SKJSONCANVAS_VERB_LINE "\":[%f,%f]}", pts[1].x(), pts[1].y());
+ break;
+ case SkPath::kQuad_Verb:
+ text.appendf("{\"" SKJSONCANVAS_VERB_QUAD "\":[[%f,%f],[%f,%f]]}", pts[1].x(),
+ pts[1].y(), pts[2].x(), pts[2].y());
+ break;
+ case SkPath::kCubic_Verb:
+ text.appendf("{\"" SKJSONCANVAS_VERB_CUBIC "\":[[%f,%f],[%f,%f],[%f,%f]]}",
+ pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y(), pts[3].x(),
+ pts[3].y());
+ break;
+ case SkPath::kConic_Verb:
+ text.appendf("{\"" SKJSONCANVAS_VERB_CONIC "\":[[%f,%f],[%f,%f],%f]}", pts[1].x(),
+ pts[1].y(), pts[2].x(), pts[2].y(), iter.conicWeight());
+ break;
+ case SkPath::kMove_Verb:
+ text.appendf("{\"" SKJSONCANVAS_VERB_MOVE "\":[%f,%f]}", pts[0].x(), pts[0].y());
+ break;
+ case SkPath::kClose_Verb:
+ text.appendf("\"" SKJSONCANVAS_VERB_CLOSE "\"");
+ break;
+ case SkPath::kDone_Verb:
+ break;
+ }
+ }
+ text.appendf("]");
+ this->writef(",\"" SKJSONCANVAS_ATTRIBUTE_PATH "\":%s", text.c_str());
+}
+
+void SkJSONCanvas::writeRegion(const char* name, const SkRegion& region) {
+ this->writef(",\"%s\":\"<unimplemented>\"", name);
+}
+
+void SkJSONCanvas::writePaint(const SkPaint& paint) {
+ this->writef(",\"" SKJSONCANVAS_ATTRIBUTE_PAINT "\":{");
+ SkColor color = paint.getColor();
+ bool first = true;
+ if (color != SK_ColorBLACK) {
+ this->writef("\"" SKJSONCANVAS_ATTRIBUTE_COLOR "\":[%d,%d,%d,%d]", SkColorGetA(color),
+ SkColorGetR(color), SkColorGetG(color), SkColorGetB(color));
+ first = false;
+ }
+ SkPaint::Style style = paint.getStyle();
+ if (style != SkPaint::kFill_Style) {
+ if (first) {
+ first = false;
+ }
+ else {
+ fOut.writeText(",");
+ }
+ switch (style) {
+ case SkPaint::kStroke_Style:
+ fOut.writeText("\"" SKJSONCANVAS_ATTRIBUTE_STYLE "\":\""
+ SKJSONCANVAS_STYLE_STROKE "\"");
+ break;
+ case SkPaint::kStrokeAndFill_Style:
+ fOut.writeText("\"" SKJSONCANVAS_ATTRIBUTE_STYLE "\":\""
+ SKJSONCANVAS_STYLE_STROKEANDFILL "\"");
+ break;
+ default: SkASSERT(false);
+ }
+ }
+ SkScalar strokeWidth = paint.getStrokeWidth();
+ if (strokeWidth != 0.0f) {
+ if (first) {
+ first = false;
+ }
+ else {
+ fOut.writeText(",");
+ }
+ this->writef("\"" SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH "\":%f", strokeWidth);
+ }
+ if (paint.isAntiAlias()) {
+ if (first) {
+ first = false;
+ }
+ else {
+ fOut.writeText(",");
+ }
+ fOut.writeText("\"" SKJSONCANVAS_ATTRIBUTE_ANTIALIAS "\":true");
+ }
+ fOut.writeText("}");
+}
+
+void SkJSONCanvas::writeMatrix(const char* name, const SkMatrix& matrix) {
+ this->writef(",\"%s\":[[%f,%f,%f],[%f,%f,%f],[%f,%f,%f]]", name,
+ matrix[0], matrix[1], matrix[2],
+ matrix[3], matrix[4], matrix[5],
+ matrix[6], matrix[7], matrix[8]);
+}
+
+void SkJSONCanvas::writeRegionOp(const char* name, SkRegion::Op op) {
+ this->writef(",\"%s\":\"", name);
+ switch (op) {
+ case SkRegion::kDifference_Op:
+ fOut.writeText(SKJSONCANVAS_REGIONOP_DIFFERENCE);
+ break;
+ case SkRegion::kIntersect_Op:
+ fOut.writeText(SKJSONCANVAS_REGIONOP_INTERSECT);
+ break;
+ case SkRegion::kUnion_Op:
+ fOut.writeText(SKJSONCANVAS_REGIONOP_UNION);
+ break;
+ case SkRegion::kXOR_Op:
+ fOut.writeText(SKJSONCANVAS_REGIONOP_XOR);
+ break;
+ case SkRegion::kReverseDifference_Op:
+ fOut.writeText(SKJSONCANVAS_REGIONOP_REVERSE_DIFFERENCE);
+ break;
+ case SkRegion::kReplace_Op:
+ fOut.writeText(SKJSONCANVAS_REGIONOP_REPLACE);
+ break;
+ default:
+ SkASSERT(false);
+ };
+ fOut.writeText("\"");
+}
+
+void SkJSONCanvas::writeEdgeStyle(const char* name, SkCanvas::ClipEdgeStyle edgeStyle) {
+ this->writef(",\"%s\":\"", name);
+ switch (edgeStyle) {
+ case SkCanvas::kHard_ClipEdgeStyle: fOut.writeText(SKJSONCANVAS_EDGESTYLE_HARD); break;
+ case SkCanvas::kSoft_ClipEdgeStyle: fOut.writeText(SKJSONCANVAS_EDGESTYLE_SOFT); break;
+ default: SkASSERT(false);
+ };
+ fOut.writeText("\"");
+}
+
+void SkJSONCanvas::writePointMode(const char* name, SkCanvas::PointMode mode) {
+ this->writef(",\"%s\":\"", name);
+ switch (mode) {
+ case SkCanvas::kPoints_PointMode: fOut.writeText(SKJSONCANVAS_POINTMODE_POINTS); break;
+ case SkCanvas::kLines_PointMode: fOut.writeText(SKJSONCANVAS_POINTMODE_LINES); break;
+ case SkCanvas::kPolygon_PointMode: fOut.writeText(SKJSONCANVAS_POINTMODE_POLYGON); break;
+ default: SkASSERT(false);
+ };
+ fOut.writeText("\"");
+}
+
+void SkJSONCanvas::updateMatrix() {
+ const SkMatrix& matrix = this->getTotalMatrix();
+ if (matrix != fLastMatrix) {
+ this->open(SKJSONCANVAS_COMMAND_MATRIX);
+ this->writeMatrix(SKJSONCANVAS_ATTRIBUTE_MATRIX, matrix);
+ fLastMatrix = matrix;
+ this->close();
+ }
+}
+
+void SkJSONCanvas::onDrawPaint(const SkPaint& paint) {
+ this->open(SKJSONCANVAS_COMMAND_PAINT);
+ this->writePaint(paint);
+ this->close();
+}
+
+void SkJSONCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_RECT);
+ this->writeRect(SKJSONCANVAS_ATTRIBUTE_COORDS, rect);
+ this->writePaint(paint);
+ this->close();
+}
+
+void SkJSONCanvas::onDrawOval(const SkRect& rect, const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_OVAL);
+ this->writeRect(SKJSONCANVAS_ATTRIBUTE_COORDS, rect);
+ this->writePaint(paint);
+ this->close();
+}
+
+void SkJSONCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_RRECT);
+ this->writeRRect(SKJSONCANVAS_ATTRIBUTE_COORDS, rrect);
+ this->writePaint(paint);
+ this->close();}
+
+void SkJSONCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_DRRECT);
+ this->writeRRect(SKJSONCANVAS_ATTRIBUTE_OUTER, outer);
+ this->writeRRect(SKJSONCANVAS_ATTRIBUTE_INNER, inner);
+ this->writePaint(paint);
+ this->close();
+}
+
+void SkJSONCanvas::onDrawPoints(SkCanvas::PointMode mode, size_t count, const SkPoint pts[],
+ const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_POINTS);
+ this->writePointMode(SKJSONCANVAS_ATTRIBUTE_MODE, mode);
+ fOut.writeText(",\"" SKJSONCANVAS_ATTRIBUTE_POINTS "\":[");
+ for (size_t i = 0; i < count; i++) {
+ if (i != 0) {
+ fOut.writeText(",");
+ }
+ this->writef("[%f,%f]", pts[i].x(), pts[i].y());
+ }
+ fOut.writeText("]");
+ this->writePaint(paint);
+ this->close();
+}
+
+void SkJSONCanvas::onDrawVertices(SkCanvas::VertexMode, int vertexCount, const SkPoint vertices[],
+ const SkPoint texs[], const SkColor colors[], SkXfermode*,
+ const uint16_t indices[], int indexCount, const SkPaint&) {
+ SkDebugf("unsupported: drawVertices\n");
+}
+
+void SkJSONCanvas::onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
+ int count, SkXfermode::Mode, const SkRect* cull, const SkPaint*) {
+ SkDebugf("unsupported: drawAtlas\n");
+}
+
+void SkJSONCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_PATH);
+ this->writePath(SKJSONCANVAS_ATTRIBUTE_PATH, path);
+ this->writePaint(paint);
+ this->close();}
+
+void SkJSONCanvas::onDrawImage(const SkImage*, SkScalar dx, SkScalar dy, const SkPaint*) {
+ SkDebugf("unsupported: drawImage\n");
+}
+
+void SkJSONCanvas::onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
+ SkCanvas::SrcRectConstraint) {
+ SkDebugf("unsupported: drawImageRect\n");
+}
+
+void SkJSONCanvas::onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
+ const SkPaint*) {
+ SkDebugf("unsupported: drawImageNine\n");
+}
+
+void SkJSONCanvas::onDrawBitmap(const SkBitmap&, SkScalar dx, SkScalar dy, const SkPaint*) {
+ SkDebugf("unsupported: drawBitmap\n");
+}
+
+void SkJSONCanvas::onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*,
+ SkCanvas::SrcRectConstraint) {
+ SkDebugf("unsupported: drawBitmapRect\n");
+}
+
+void SkJSONCanvas::onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
+ const SkPaint*) {
+ SkDebugf("unsupported: drawBitmapNine\n");
+}
+
+void SkJSONCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x,
+ SkScalar y, const SkPaint& paint) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_TEXT);
+ this->writeString(SKJSONCANVAS_ATTRIBUTE_TEXT, text, byteLength);
+ this->writePoint(SKJSONCANVAS_ATTRIBUTE_COORDS, { x, y });
+ this->writePaint(paint);
+ this->close();
+}
+
+void SkJSONCanvas::onDrawPosText(const void* text, size_t byteLength,
+ const SkPoint pos[], const SkPaint& paint) {
+ SkDebugf("unsupported: drawPosText\n");
+}
+
+void SkJSONCanvas::onDrawPosTextH(const void* text, size_t byteLength,
+ const SkScalar xpos[], SkScalar constY,
+ const SkPaint& paint) {
+ SkDebugf("unsupported: drawPosTextH\n");
+}
+
+void SkJSONCanvas::onDrawTextOnPath(const void* text, size_t byteLength,
+ const SkPath& path, const SkMatrix* matrix,
+ const SkPaint& paint) {
+ SkDebugf("unsupported: drawTextOnPath\n");
+}
+
+void SkJSONCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
+ const SkPaint& paint) {
+ SkDebugf("unsupported: drawTextBlob\n");
+}
+
+void SkJSONCanvas::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
+ const SkPoint texCoords[4], SkXfermode* xmode,
+ const SkPaint& paint) {
+ SkDebugf("unsupported: drawPatch\n");
+}
+
+void SkJSONCanvas::onDrawDrawable(SkDrawable*, const SkMatrix*) {
+ SkDebugf("unsupported: drawDrawable\n");
+}
+
+void SkJSONCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_CLIPRECT);
+ this->writeRect(SKJSONCANVAS_ATTRIBUTE_COORDS, rect);
+ this->writeRegionOp(SKJSONCANVAS_ATTRIBUTE_REGIONOP, op);
+ this->writeEdgeStyle(SKJSONCANVAS_ATTRIBUTE_EDGESTYLE, edgeStyle);
+ this->close();
+}
+
+void SkJSONCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
+ this->updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_CLIPRRECT);
+ this->writeRRect(SKJSONCANVAS_ATTRIBUTE_COORDS, rrect);
+ this->writeRegionOp(SKJSONCANVAS_ATTRIBUTE_REGIONOP, op);
+ this->writeEdgeStyle(SKJSONCANVAS_ATTRIBUTE_EDGESTYLE, edgeStyle);
+ this->close();
+}
+
+void SkJSONCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
+ updateMatrix();
+ this->open(SKJSONCANVAS_COMMAND_CLIPPATH);
+ this->writePath(SKJSONCANVAS_ATTRIBUTE_PATH, path);
+ this->writeRegionOp(SKJSONCANVAS_ATTRIBUTE_REGIONOP, op);
+ this->writeEdgeStyle(SKJSONCANVAS_ATTRIBUTE_EDGESTYLE, edgeStyle);
+ this->close();
+}
+
+void SkJSONCanvas::onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) {
+ this->open(SKJSONCANVAS_COMMAND_CLIPREGION);
+ this->writeRegion(SKJSONCANVAS_ATTRIBUTE_DEVICEREGION, deviceRgn);
+ this->writeRegionOp(SKJSONCANVAS_ATTRIBUTE_REGIONOP, op);
+ this->close();
+}
+
+void SkJSONCanvas::willSave() {
+ this->open(SKJSONCANVAS_COMMAND_SAVE);
+ this->close();
+}
+
+void SkJSONCanvas::willRestore() {
+ this->open(SKJSONCANVAS_COMMAND_RESTORE);
+ this->close();
+}
diff --git a/src/json/SkJSONCanvas.h b/src/json/SkJSONCanvas.h
new file mode 100644
index 0000000..fcf7c37
--- /dev/null
+++ b/src/json/SkJSONCanvas.h
@@ -0,0 +1,217 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkJSONCanvas_DEFINED
+#define SkJSONCanvas_DEFINED
+
+#include "SkCanvas.h"
+#include "SkStream.h"
+
+#define SKJSONCANVAS_VERSION "version"
+#define SKJSONCANVAS_COMMANDS "commands"
+#define SKJSONCANVAS_COMMAND "command"
+
+#define SKJSONCANVAS_COMMAND_MATRIX "Matrix"
+#define SKJSONCANVAS_COMMAND_PAINT "Paint"
+#define SKJSONCANVAS_COMMAND_RECT "Rect"
+#define SKJSONCANVAS_COMMAND_OVAL "Oval"
+#define SKJSONCANVAS_COMMAND_RRECT "RRect"
+#define SKJSONCANVAS_COMMAND_DRRECT "DRRect"
+#define SKJSONCANVAS_COMMAND_POINTS "Points"
+#define SKJSONCANVAS_COMMAND_VERTICES "Vertices"
+#define SKJSONCANVAS_COMMAND_ATLAS "Atlas"
+#define SKJSONCANVAS_COMMAND_PATH "Path"
+#define SKJSONCANVAS_COMMAND_IMAGE "Image"
+#define SKJSONCANVAS_COMMAND_IMAGERECT "ImageRect"
+#define SKJSONCANVAS_COMMAND_IMAGENINE "ImageNine"
+#define SKJSONCANVAS_COMMAND_BITMAP "Bitmap"
+#define SKJSONCANVAS_COMMAND_BITMAPRECT "BitmapRect"
+#define SKJSONCANVAS_COMMAND_BITMAPNINE "BitmapNine"
+#define SKJSONCANVAS_COMMAND_TEXT "Text"
+#define SKJSONCANVAS_COMMAND_POSTEXT "PosText"
+#define SKJSONCANVAS_COMMAND_POSTEXTH "PosTextH"
+#define SKJSONCANVAS_COMMAND_TEXTONPATH "TextOnPath"
+#define SKJSONCANVAS_COMMAND_TEXTBLOB "TextBlob"
+#define SKJSONCANVAS_COMMAND_PATCH "Patch"
+#define SKJSONCANVAS_COMMAND_DRAWABLE "Drawable"
+#define SKJSONCANVAS_COMMAND_CLIPRECT "ClipRect"
+#define SKJSONCANVAS_COMMAND_CLIPRRECT "ClipRRect"
+#define SKJSONCANVAS_COMMAND_CLIPPATH "ClipPath"
+#define SKJSONCANVAS_COMMAND_CLIPREGION "ClipRegion"
+#define SKJSONCANVAS_COMMAND_SAVE "Save"
+#define SKJSONCANVAS_COMMAND_RESTORE "Restore"
+
+#define SKJSONCANVAS_ATTRIBUTE_MATRIX "matrix"
+#define SKJSONCANVAS_ATTRIBUTE_COORDS "coords"
+#define SKJSONCANVAS_ATTRIBUTE_PAINT "paint"
+#define SKJSONCANVAS_ATTRIBUTE_OUTER "outer"
+#define SKJSONCANVAS_ATTRIBUTE_INNER "inner"
+#define SKJSONCANVAS_ATTRIBUTE_MODE "mode"
+#define SKJSONCANVAS_ATTRIBUTE_POINTS "points"
+#define SKJSONCANVAS_ATTRIBUTE_PATH "path"
+#define SKJSONCANVAS_ATTRIBUTE_TEXT "text"
+#define SKJSONCANVAS_ATTRIBUTE_COLOR "color"
+#define SKJSONCANVAS_ATTRIBUTE_STYLE "style"
+#define SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH "strokeWidth"
+#define SKJSONCANVAS_ATTRIBUTE_ANTIALIAS "antiAlias"
+#define SKJSONCANVAS_ATTRIBUTE_REGIONOP "op"
+#define SKJSONCANVAS_ATTRIBUTE_EDGESTYLE "edgeStyle"
+#define SKJSONCANVAS_ATTRIBUTE_DEVICEREGION "deviceRegion"
+
+#define SKJSONCANVAS_VERB_MOVE "move"
+#define SKJSONCANVAS_VERB_LINE "line"
+#define SKJSONCANVAS_VERB_QUAD "quad"
+#define SKJSONCANVAS_VERB_CUBIC "cubic"
+#define SKJSONCANVAS_VERB_CONIC "conic"
+#define SKJSONCANVAS_VERB_CLOSE "close"
+
+#define SKJSONCANVAS_STYLE_FILL "fill"
+#define SKJSONCANVAS_STYLE_STROKE "stroke"
+#define SKJSONCANVAS_STYLE_STROKEANDFILL "strokeAndFill"
+
+#define SKJSONCANVAS_EDGESTYLE_HARD "hard"
+#define SKJSONCANVAS_EDGESTYLE_SOFT "soft"
+
+#define SKJSONCANVAS_POINTMODE_POINTS "points"
+#define SKJSONCANVAS_POINTMODE_LINES "lines"
+#define SKJSONCANVAS_POINTMODE_POLYGON "polygon"
+
+#define SKJSONCANVAS_REGIONOP_DIFFERENCE "difference"
+#define SKJSONCANVAS_REGIONOP_INTERSECT "intersect"
+#define SKJSONCANVAS_REGIONOP_UNION "union"
+#define SKJSONCANVAS_REGIONOP_XOR "xor"
+#define SKJSONCANVAS_REGIONOP_REVERSE_DIFFERENCE "reverseDifference"
+#define SKJSONCANVAS_REGIONOP_REPLACE "replace"
+
+/*
+ * Implementation of SkCanvas which writes JSON when drawn to. The JSON describes all of the draw
+ * commands issued to the canvas, and can later be turned back into draw commands using
+ * SkJSONRenderer. Be sure to call finish() when you are done drawing.
+ */
+class SkJSONCanvas : public SkCanvas {
+public:
+ /* Create a canvas which writes to the specified output stream. */
+ SkJSONCanvas(int width, int height, SkWStream& out);
+
+ /* Complete the JSON document. */
+ void finish();
+
+ // overridden SkCanvas API
+
+ void onDrawPaint(const SkPaint&) override;
+
+ void onDrawRect(const SkRect&, const SkPaint&) override;
+
+ void onDrawOval(const SkRect&, const SkPaint&) override;
+
+ void onDrawRRect(const SkRRect&, const SkPaint&) override;
+
+ void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override;
+
+ void onDrawPoints(SkCanvas::PointMode, size_t count, const SkPoint pts[],
+ const SkPaint&) override;
+
+ void onDrawVertices(SkCanvas::VertexMode, int vertexCount, const SkPoint vertices[],
+ const SkPoint texs[], const SkColor colors[], SkXfermode*,
+ const uint16_t indices[], int indexCount, const SkPaint&) override;
+
+ void onDrawAtlas(const SkImage*, const SkRSXform[], const SkRect[], const SkColor[],
+ int count, SkXfermode::Mode, const SkRect* cull, const SkPaint*) override;
+
+ void onDrawPath(const SkPath&, const SkPaint&) override;
+
+ void onDrawImage(const SkImage*, SkScalar dx, SkScalar dy, const SkPaint*) override;
+
+ void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
+ SrcRectConstraint) override;
+
+ void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
+ const SkPaint*) override;
+
+ void onDrawBitmap(const SkBitmap&, SkScalar dx, SkScalar dy, const SkPaint*) override;
+
+ void onDrawBitmapRect(const SkBitmap&, const SkRect*, const SkRect&, const SkPaint*,
+ SkCanvas::SrcRectConstraint) override;
+
+ void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
+ const SkPaint*) override;
+
+ void onDrawText(const void* text, size_t byteLength, SkScalar x,
+ SkScalar y, const SkPaint& paint) override;
+
+ void onDrawPosText(const void* text, size_t byteLength,
+ const SkPoint pos[], const SkPaint& paint) override;
+
+ void onDrawPosTextH(const void* text, size_t byteLength,
+ const SkScalar xpos[], SkScalar constY,
+ const SkPaint& paint) override;
+
+ void onDrawTextOnPath(const void* text, size_t byteLength,
+ const SkPath& path, const SkMatrix* matrix,
+ const SkPaint& paint) override;
+
+ void onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y,
+ const SkPaint& paint) override;
+
+ void onDrawPatch(const SkPoint cubics[12], const SkColor colors[4],
+ const SkPoint texCoords[4], SkXfermode* xmode, const SkPaint& paint) override;
+
+ void onDrawDrawable(SkDrawable*, const SkMatrix*) override;
+
+ void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
+
+ void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
+
+ void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) override;
+
+ void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) override;
+
+ void willSave() override;
+
+ void willRestore() override;
+
+private:
+ void writef(const char* fmt, ...);
+
+ void open(const char* name);
+
+ void close();
+
+ void writeString(const char* name, const char* text);
+
+ void writeString(const char* name, const void* text, size_t length);
+
+ void writePoint(const char* name, const SkPoint& point);
+
+ void writeRect(const char* name, const SkRect& rect);
+
+ void writeRRect(const char* name, const SkRRect& rrect);
+
+ void writePath(const char* name, const SkPath& path);
+
+ void writeRegion(const char* name, const SkRegion& region);
+
+ void writePaint(const SkPaint& paint);
+
+ void writeRegionOp(const char* name, SkRegion::Op op);
+
+ void writeEdgeStyle(const char* name, SkCanvas::ClipEdgeStyle edgeStyle);
+
+ void writePointMode(const char* name, SkCanvas::PointMode mode);
+
+ void writeMatrix(const char* name, const SkMatrix& matrix);
+
+ void updateMatrix();
+
+ SkWStream& fOut;
+ SkMatrix fLastMatrix;
+ bool fFirstCommand;
+
+ typedef SkCanvas INHERITED;
+};
+
+#endif
diff --git a/src/json/SkJSONRenderer.cpp b/src/json/SkJSONRenderer.cpp
new file mode 100644
index 0000000..f9bb6ee
--- /dev/null
+++ b/src/json/SkJSONRenderer.cpp
@@ -0,0 +1,289 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkJSONRenderer.h"
+#include "SkJSONCanvas.h"
+#include "SkJSONCPP.h"
+#include "SkPath.h"
+
+namespace SkJSONRenderer {
+
+class Renderer {
+public:
+ void getPaint(Json::Value& command, SkPaint* paint);
+
+ void getRect(Json::Value& command, const char* name, SkRect* rect);
+
+ void getRRect(Json::Value& command, const char* name, SkRRect* rrect);
+
+ void processCommand(Json::Value& command, SkCanvas* target);
+
+ void processMatrix(Json::Value& command, SkCanvas* target);
+
+ void processSave(Json::Value& command, SkCanvas* target);
+
+ void processRestore(Json::Value& command, SkCanvas* target);
+
+ void processPaint(Json::Value& command, SkCanvas* target);
+
+ void processRect(Json::Value& command, SkCanvas* target);
+
+ void processRRect(Json::Value& command, SkCanvas* target);
+
+ void processOval(Json::Value& command, SkCanvas* target);
+
+ void processPath(Json::Value& command, SkCanvas* target);
+
+ void processText(Json::Value& command, SkCanvas* target);
+
+ void processPoints(Json::Value& command, SkCanvas* target);
+
+ void processClipRect(Json::Value& command, SkCanvas* target);
+};
+
+void Renderer::processCommand(Json::Value& command, SkCanvas* target) {
+ const char* name = command[SKJSONCANVAS_COMMAND].asCString();
+ // TODO speed this up with a hash
+ if (!strcmp(name, SKJSONCANVAS_COMMAND_MATRIX)) {
+ this->processMatrix(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_SAVE)) {
+ this->processSave(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_RESTORE)) {
+ this->processRestore(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_PAINT)) {
+ this->processPaint(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_RECT)) {
+ this->processRect(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_RRECT)) {
+ this->processRRect(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_OVAL)) {
+ this->processOval(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_PATH)) {
+ this->processPath(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_TEXT)) {
+ this->processText(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_POINTS)) {
+ this->processPoints(command, target);
+ }
+ else if (!strcmp(name, SKJSONCANVAS_COMMAND_CLIPRECT)) {
+ this->processClipRect(command, target);
+ }
+ else {
+ SkDebugf("unsupported JSON command: %s\n", name);
+ }
+}
+
+void Renderer::getPaint(Json::Value& command, SkPaint* result) {
+ Json::Value jsonPaint = command[SKJSONCANVAS_ATTRIBUTE_PAINT];
+ if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_COLOR)) {
+ Json::Value color = jsonPaint[SKJSONCANVAS_ATTRIBUTE_COLOR];
+ result->setColor(SkColorSetARGB(color[0].asInt(), color[1].asInt(), color[2].asInt(),
+ color[3].asInt()));
+ }
+ if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_STYLE)) {
+ const char* style = jsonPaint[SKJSONCANVAS_ATTRIBUTE_STYLE].asCString();
+ if (!strcmp(style, SKJSONCANVAS_STYLE_FILL)) {
+ result->setStyle(SkPaint::kFill_Style);
+ }
+ else if (!strcmp(style, SKJSONCANVAS_STYLE_STROKE)) {
+ result->setStyle(SkPaint::kStroke_Style);
+ }
+ else if (!strcmp(style, SKJSONCANVAS_STYLE_STROKEANDFILL)) {
+ result->setStyle(SkPaint::kStrokeAndFill_Style);
+ }
+ }
+ if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH)) {
+ float strokeWidth = jsonPaint[SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH].asFloat();
+ result->setStrokeWidth(strokeWidth);
+ }
+ if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_ANTIALIAS)) {
+ result->setAntiAlias(jsonPaint[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS].asBool());
+ }
+}
+
+void Renderer::getRect(Json::Value& command, const char* name, SkRect* result) {
+ Json::Value rect = command[name];
+ result->set(rect[0].asFloat(), rect[1].asFloat(), rect[2].asFloat(), rect[3].asFloat());
+}
+
+void Renderer::getRRect(Json::Value& command, const char* name, SkRRect* result) {
+ Json::Value rrect = command[name];
+ SkVector radii[4] = {
+ { rrect[1][0].asFloat(), rrect[1][1].asFloat() },
+ { rrect[2][0].asFloat(), rrect[2][1].asFloat() },
+ { rrect[3][0].asFloat(), rrect[3][1].asFloat() },
+ { rrect[4][0].asFloat(), rrect[4][1].asFloat() }
+ };
+ result->setRectRadii(SkRect::MakeLTRB(rrect[0][0].asFloat(), rrect[0][1].asFloat(),
+ rrect[0][2].asFloat(), rrect[0][3].asFloat()),
+ radii);
+}
+
+void Renderer::processMatrix(Json::Value& command, SkCanvas* target) {
+ Json::Value jsonMatrix = command[SKJSONCANVAS_ATTRIBUTE_MATRIX];
+ SkMatrix matrix;
+ SkScalar values[] = {
+ jsonMatrix[0][0].asFloat(), jsonMatrix[0][1].asFloat(), jsonMatrix[0][2].asFloat(),
+ jsonMatrix[1][0].asFloat(), jsonMatrix[1][1].asFloat(), jsonMatrix[1][2].asFloat(),
+ jsonMatrix[2][0].asFloat(), jsonMatrix[2][1].asFloat(), jsonMatrix[2][2].asFloat()
+ };
+ matrix.set9(values);
+ target->setMatrix(matrix);
+}
+
+void Renderer::processSave(Json::Value& command, SkCanvas* target) {
+ target->save();
+}
+
+void Renderer::processRestore(Json::Value& command, SkCanvas* target) {
+ target->restore();
+}
+
+void Renderer::processPaint(Json::Value& command, SkCanvas* target) {
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ target->drawPaint(paint);
+}
+
+void Renderer::processRect(Json::Value& command, SkCanvas* target) {
+ SkRect rect;
+ this->getRect(command, SKJSONCANVAS_ATTRIBUTE_COORDS, &rect);
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ target->drawRect(rect, paint);
+}
+
+void Renderer::processRRect(Json::Value& command, SkCanvas* target) {
+ SkRRect rrect;
+ this->getRRect(command, SKJSONCANVAS_ATTRIBUTE_COORDS, &rrect);
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ target->drawRRect(rrect, paint);
+}
+
+void Renderer::processOval(Json::Value& command, SkCanvas* target) {
+ SkRect rect;
+ this->getRect(command, SKJSONCANVAS_ATTRIBUTE_COORDS, &rect);
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ target->drawOval(rect, paint);
+}
+
+void Renderer::processPath(Json::Value& command, SkCanvas* target) {
+ Json::Value jsonPath = command[SKJSONCANVAS_ATTRIBUTE_PATH];
+ SkPath path;
+ for (Json::ArrayIndex i = 0; i < jsonPath.size(); i++) {
+ Json::Value verb = jsonPath[i];
+ if (verb.isString()) {
+ SkASSERT(!strcmp(verb.asCString(), SKJSONCANVAS_VERB_CLOSE));
+ path.close();
+ }
+ else {
+ if (verb.isMember(SKJSONCANVAS_VERB_MOVE)) {
+ Json::Value move = verb[SKJSONCANVAS_VERB_MOVE];
+ path.moveTo(move[0].asFloat(), move[1].asFloat());
+ }
+ else if (verb.isMember(SKJSONCANVAS_VERB_LINE)) {
+ Json::Value line = verb[SKJSONCANVAS_VERB_LINE];
+ path.lineTo(line[0].asFloat(), line[1].asFloat());
+ }
+ else if (verb.isMember(SKJSONCANVAS_VERB_QUAD)) {
+ Json::Value quad = verb[SKJSONCANVAS_VERB_QUAD];
+ path.quadTo(quad[0][0].asFloat(), quad[0][1].asFloat(),
+ quad[1][0].asFloat(), quad[1][1].asFloat());
+ }
+ else if (verb.isMember(SKJSONCANVAS_VERB_CUBIC)) {
+ Json::Value cubic = verb[SKJSONCANVAS_VERB_CUBIC];
+ path.cubicTo(cubic[0][0].asFloat(), cubic[0][1].asFloat(),
+ cubic[1][0].asFloat(), cubic[1][1].asFloat(),
+ cubic[2][0].asFloat(), cubic[2][1].asFloat());
+ }
+ else if (verb.isMember(SKJSONCANVAS_VERB_CONIC)) {
+ Json::Value conic = verb[SKJSONCANVAS_VERB_CONIC];
+ path.conicTo(conic[0][0].asFloat(), conic[0][1].asFloat(),
+ conic[1][0].asFloat(), conic[1][1].asFloat(),
+ conic[2].asFloat());
+ }
+ else {
+ SkASSERT(false);
+ }
+ }
+ }
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ target->drawPath(path, paint);
+}
+
+void Renderer::processText(Json::Value& command, SkCanvas* target) {
+ const char* text = command[SKJSONCANVAS_ATTRIBUTE_TEXT].asCString();
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ Json::Value coords = command[SKJSONCANVAS_ATTRIBUTE_COORDS];
+ target->drawText(text, strlen(text), coords[0].asFloat(), coords[1].asFloat(), paint);
+}
+
+void Renderer::processPoints(Json::Value& command, SkCanvas* target) {
+ SkCanvas::PointMode mode;
+ const char* jsonMode = command[SKJSONCANVAS_ATTRIBUTE_MODE].asCString();
+ if (!strcmp(jsonMode, SKJSONCANVAS_POINTMODE_POINTS)) {
+ mode = SkCanvas::kPoints_PointMode;
+ }
+ else if (!strcmp(jsonMode, SKJSONCANVAS_POINTMODE_LINES)) {
+ mode = SkCanvas::kLines_PointMode;
+ }
+ else if (!strcmp(jsonMode, SKJSONCANVAS_POINTMODE_POLYGON)) {
+ mode = SkCanvas::kPolygon_PointMode;
+ }
+ else {
+ SkASSERT(false);
+ return;
+ }
+ Json::Value jsonPoints = command[SKJSONCANVAS_ATTRIBUTE_POINTS];
+ int count = (int) jsonPoints.size();
+ SkPoint* points = (SkPoint*) sk_malloc_throw(count * sizeof(SkPoint));
+ for (int i = 0; i < count; i++) {
+ points[i] = SkPoint::Make(jsonPoints[i][0].asFloat(), jsonPoints[i][1].asFloat());
+ }
+ SkPaint paint;
+ this->getPaint(command, &paint);
+ target->drawPoints(mode, count, points, paint);
+ free(points);
+}
+
+void Renderer::processClipRect(Json::Value& command, SkCanvas* target) {
+ SkRect rect;
+ this->getRect(command, SKJSONCANVAS_ATTRIBUTE_COORDS, &rect);
+ target->clipRect(rect);
+}
+
+void render(const char* json, SkCanvas* target) {
+ Renderer renderer;
+ Json::Reader reader;
+ Json::Value root;
+ if (reader.parse(std::string(json), root)) {
+ SkASSERT(root[SKJSONCANVAS_VERSION].asInt() == 1);
+ Json::Value commands = root[SKJSONCANVAS_COMMANDS];
+ for (Json::ArrayIndex i = 0; i < commands.size(); i++) {
+ renderer.processCommand(commands[i], target);
+ }
+ }
+ else {
+ SkDebugf(json);
+ SkFAIL("json parse failure");
+ }
+}
+
+} // namespace
diff --git a/src/json/SkJSONRenderer.h b/src/json/SkJSONRenderer.h
new file mode 100644
index 0000000..d92edf2
--- /dev/null
+++ b/src/json/SkJSONRenderer.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkJSONRenderer_DEFINED
+#define SkJSONRenderer_DEFINED
+
+
+#include "SkCanvas.h"
+
+namespace SkJSONRenderer {
+ /*
+ * Takes a JSON document produced by SkJSONCanvas and issues its draw commands to the target
+ * canvas.
+ */
+ void render(const char* json, SkCanvas* target);
+}
+
+#endif