f6a84bdb47
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1674643002 Review URL: https://codereview.chromium.org/1674643002
973 lines
36 KiB
C++
973 lines
36 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkJSONRenderer.h"
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#include "SkBlurMaskFilter.h"
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#include "SkDashPathEffect.h"
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#include "SkJSONCanvas.h"
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#include "SkJSONCPP.h"
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#include "SkPath.h"
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#include "SkTextBlob.h"
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#include "SkTypeface.h"
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#include "SkValidatingReadBuffer.h"
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namespace SkJSONRenderer {
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class Renderer {
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public:
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void getPaint(Json::Value& paint, SkPaint* result);
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void getRect(Json::Value& rect, SkRect* result);
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void getRRect(Json::Value& rrect, SkRRect* result);
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void getPath(Json::Value& path, SkPath* result);
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void getMatrix(Json::Value& matrix, SkMatrix* result);
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SkRegion::Op getRegionOp(Json::Value& op);
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void processCommand(Json::Value& command, SkCanvas* target);
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void processTranslate(Json::Value& command, SkCanvas* target);
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void processScale(Json::Value& command, SkCanvas* target);
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void processMatrix(Json::Value& command, SkCanvas* target);
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void processSave(Json::Value& command, SkCanvas* target);
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void processRestore(Json::Value& command, SkCanvas* target);
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void processSaveLayer(Json::Value& command, SkCanvas* target);
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void processPaint(Json::Value& command, SkCanvas* target);
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void processRect(Json::Value& command, SkCanvas* target);
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void processRRect(Json::Value& command, SkCanvas* target);
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void processOval(Json::Value& command, SkCanvas* target);
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void processPath(Json::Value& command, SkCanvas* target);
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void processText(Json::Value& command, SkCanvas* target);
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void processPosText(Json::Value& command, SkCanvas* target);
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void processTextOnPath(Json::Value& command, SkCanvas* target);
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void processTextBlob(Json::Value& command, SkCanvas* target);
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void processPoints(Json::Value& command, SkCanvas* target);
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void processImage(Json::Value& command, SkCanvas* target);
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void processImageRect(Json::Value& command, SkCanvas* target);
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void processBitmap(Json::Value& command, SkCanvas* target);
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void processBitmapRect(Json::Value& command, SkCanvas* target);
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void processClipRect(Json::Value& command, SkCanvas* target);
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void processClipRRect(Json::Value& command, SkCanvas* target);
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void processClipPath(Json::Value& command, SkCanvas* target);
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};
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void Renderer::processCommand(Json::Value& command, SkCanvas* target) {
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const char* name = command[SKJSONCANVAS_COMMAND].asCString();
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// TODO speed this up with a hash
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if (!strcmp(name, SKJSONCANVAS_COMMAND_TRANSLATE)) {
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this->processTranslate(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_SCALE)) {
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this->processScale(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_MATRIX)) {
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this->processMatrix(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_SAVE)) {
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this->processSave(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_RESTORE)) {
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this->processRestore(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_SAVELAYER)) {
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this->processSaveLayer(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_PAINT)) {
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this->processPaint(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_RECT)) {
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this->processRect(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_RRECT)) {
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this->processRRect(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_OVAL)) {
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this->processOval(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_PATH)) {
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this->processPath(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_TEXT)) {
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this->processText(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_POSTEXT)) {
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this->processPosText(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_TEXTONPATH)) {
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this->processTextOnPath(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_TEXTBLOB)) {
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this->processTextBlob(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_POINTS)) {
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this->processPoints(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_IMAGE)) {
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this->processImage(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_IMAGERECT)) {
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this->processImageRect(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_BITMAP)) {
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this->processBitmap(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_BITMAPRECT)) {
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this->processBitmapRect(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_CLIPRECT)) {
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this->processClipRect(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_CLIPRRECT)) {
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this->processClipRRect(command, target);
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}
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else if (!strcmp(name, SKJSONCANVAS_COMMAND_CLIPPATH)) {
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this->processClipPath(command, target);
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}
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else {
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SkDebugf("unsupported JSON command: %s\n", name);
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}
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}
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static void apply_paint_color(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_COLOR)) {
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Json::Value color = jsonPaint[SKJSONCANVAS_ATTRIBUTE_COLOR];
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target->setColor(SkColorSetARGB(color[0].asInt(), color[1].asInt(), color[2].asInt(),
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color[3].asInt()));
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}
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}
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// note that the caller is responsible for freeing the pointer
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static Json::ArrayIndex decode_data(Json::Value bytes, void** target) {
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Json::ArrayIndex size = bytes.size();
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*target = sk_malloc_throw(size);
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for (Json::ArrayIndex i = 0; i < size; i++) {
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((uint8_t*) *target)[i] = bytes[i].asInt();
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}
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return size;
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}
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static SkFlattenable* load_flattenable(Json::Value jsonFlattenable) {
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if (!jsonFlattenable.isMember(SKJSONCANVAS_ATTRIBUTE_NAME)) {
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return nullptr;
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}
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const char* name = jsonFlattenable[SKJSONCANVAS_ATTRIBUTE_NAME].asCString();
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SkFlattenable::Factory factory = SkFlattenable::NameToFactory(name);
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if (factory == nullptr) {
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SkDebugf("no factory for loading '%s'\n", name);
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return nullptr;
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}
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void* data;
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int size = decode_data(jsonFlattenable[SKJSONCANVAS_ATTRIBUTE_BYTES], &data);
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SkValidatingReadBuffer buffer(data, size);
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SkFlattenable* result = factory(buffer);
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free(data);
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if (!buffer.isValid()) {
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SkDebugf("invalid buffer loading flattenable\n");
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return nullptr;
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}
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return result;
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}
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static SkColorType colortype_from_name(const char* name) {
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if (!strcmp(name, SKJSONCANVAS_COLORTYPE_ARGB4444)) {
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return kARGB_4444_SkColorType;
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}
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else if (!strcmp(name, SKJSONCANVAS_COLORTYPE_RGBA8888)) {
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return kRGBA_8888_SkColorType;
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}
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else if (!strcmp(name, SKJSONCANVAS_COLORTYPE_BGRA8888)) {
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return kBGRA_8888_SkColorType;
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}
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else if (!strcmp(name, SKJSONCANVAS_COLORTYPE_565)) {
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return kRGB_565_SkColorType;
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}
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else if (!strcmp(name, SKJSONCANVAS_COLORTYPE_GRAY8)) {
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return kGray_8_SkColorType;
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}
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else if (!strcmp(name, SKJSONCANVAS_COLORTYPE_INDEX8)) {
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return kIndex_8_SkColorType;
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}
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else if (!strcmp(name, SKJSONCANVAS_COLORTYPE_ALPHA8)) {
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return kAlpha_8_SkColorType;
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}
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SkASSERT(false);
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return kN32_SkColorType;
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}
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static SkBitmap* convert_colortype(SkBitmap* bitmap, SkColorType colorType) {
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if (bitmap->colorType() == colorType ) {
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return bitmap;
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}
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SkBitmap* dst = new SkBitmap();
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if (bitmap->copyTo(dst, colorType)) {
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delete bitmap;
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return dst;
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}
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SkASSERT(false);
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delete dst;
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return bitmap;
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}
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// caller is responsible for freeing return value
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static SkBitmap* load_bitmap(const Json::Value& jsonBitmap) {
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if (!jsonBitmap.isMember(SKJSONCANVAS_ATTRIBUTE_BYTES)) {
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SkDebugf("invalid bitmap\n");
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return nullptr;
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}
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void* data;
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int size = decode_data(jsonBitmap[SKJSONCANVAS_ATTRIBUTE_BYTES], &data);
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SkMemoryStream stream(data, size);
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SkImageDecoder* decoder = SkImageDecoder::Factory(&stream);
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SkBitmap* bitmap = new SkBitmap();
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SkImageDecoder::Result result = decoder->decode(&stream, bitmap,
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SkImageDecoder::kDecodePixels_Mode);
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free(decoder);
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if (result != SkImageDecoder::kFailure) {
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free(data);
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if (jsonBitmap.isMember(SKJSONCANVAS_ATTRIBUTE_COLOR)) {
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const char* ctName = jsonBitmap[SKJSONCANVAS_ATTRIBUTE_COLOR].asCString();
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SkColorType ct = colortype_from_name(ctName);
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if (ct != kIndex_8_SkColorType) {
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bitmap = convert_colortype(bitmap, ct);
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}
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}
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return bitmap;
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}
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SkDebugf("image decode failed\n");
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free(data);
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return nullptr;
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}
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static SkImage* load_image(const Json::Value& jsonImage) {
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SkBitmap* bitmap = load_bitmap(jsonImage);
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if (bitmap == nullptr) {
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return nullptr;
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}
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SkImage* result = SkImage::NewFromBitmap(*bitmap);
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delete bitmap;
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return result;
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}
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static void apply_paint_shader(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_SHADER)) {
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Json::Value jsonShader = jsonPaint[SKJSONCANVAS_ATTRIBUTE_SHADER];
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SkShader* shader = (SkShader*) load_flattenable(jsonShader);
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if (shader != nullptr) {
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target->setShader(shader);
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shader->unref();
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}
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}
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}
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static void apply_paint_patheffect(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_PATHEFFECT)) {
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Json::Value jsonPathEffect = jsonPaint[SKJSONCANVAS_ATTRIBUTE_PATHEFFECT];
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SkPathEffect* pathEffect = (SkPathEffect*) load_flattenable(jsonPathEffect);
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if (pathEffect != nullptr) {
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target->setPathEffect(pathEffect);
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pathEffect->unref();
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}
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}
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}
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static void apply_paint_maskfilter(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_MASKFILTER)) {
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Json::Value jsonMaskFilter = jsonPaint[SKJSONCANVAS_ATTRIBUTE_MASKFILTER];
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SkMaskFilter* maskFilter = (SkMaskFilter*) load_flattenable(jsonMaskFilter);
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if (maskFilter != nullptr) {
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target->setMaskFilter(maskFilter);
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maskFilter->unref();
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}
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}
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}
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static void apply_paint_colorfilter(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_COLORFILTER)) {
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Json::Value jsonColorFilter = jsonPaint[SKJSONCANVAS_ATTRIBUTE_COLORFILTER];
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SkColorFilter* colorFilter = (SkColorFilter*) load_flattenable(jsonColorFilter);
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if (colorFilter != nullptr) {
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target->setColorFilter(colorFilter);
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colorFilter->unref();
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}
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}
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}
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static void apply_paint_xfermode(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_XFERMODE)) {
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Json::Value jsonXfermode = jsonPaint[SKJSONCANVAS_ATTRIBUTE_XFERMODE];
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SkXfermode* xfermode = (SkXfermode*) load_flattenable(jsonXfermode);
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if (xfermode != nullptr) {
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target->setXfermode(xfermode);
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xfermode->unref();
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}
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}
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}
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static void apply_paint_imagefilter(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_IMAGEFILTER)) {
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Json::Value jsonImageFilter = jsonPaint[SKJSONCANVAS_ATTRIBUTE_IMAGEFILTER];
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SkImageFilter* imageFilter = (SkImageFilter*) load_flattenable(jsonImageFilter);
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if (imageFilter != nullptr) {
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target->setImageFilter(imageFilter);
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imageFilter->unref();
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}
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}
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}
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static void apply_paint_style(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_STYLE)) {
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const char* style = jsonPaint[SKJSONCANVAS_ATTRIBUTE_STYLE].asCString();
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if (!strcmp(style, SKJSONCANVAS_STYLE_FILL)) {
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target->setStyle(SkPaint::kFill_Style);
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}
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else if (!strcmp(style, SKJSONCANVAS_STYLE_STROKE)) {
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target->setStyle(SkPaint::kStroke_Style);
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}
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else if (!strcmp(style, SKJSONCANVAS_STYLE_STROKEANDFILL)) {
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target->setStyle(SkPaint::kStrokeAndFill_Style);
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}
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}
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}
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static void apply_paint_strokewidth(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH)) {
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float strokeWidth = jsonPaint[SKJSONCANVAS_ATTRIBUTE_STROKEWIDTH].asFloat();
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target->setStrokeWidth(strokeWidth);
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}
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}
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static void apply_paint_strokemiter(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_STROKEMITER)) {
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float strokeMiter = jsonPaint[SKJSONCANVAS_ATTRIBUTE_STROKEMITER].asFloat();
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target->setStrokeMiter(strokeMiter);
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}
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}
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static void apply_paint_cap(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_CAP)) {
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const char* cap = jsonPaint[SKJSONCANVAS_ATTRIBUTE_CAP].asCString();
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if (!strcmp(cap, SKJSONCANVAS_CAP_BUTT)) {
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target->setStrokeCap(SkPaint::kButt_Cap);
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}
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else if (!strcmp(cap, SKJSONCANVAS_CAP_ROUND)) {
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target->setStrokeCap(SkPaint::kRound_Cap);
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}
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else if (!strcmp(cap, SKJSONCANVAS_CAP_SQUARE)) {
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target->setStrokeCap(SkPaint::kSquare_Cap);
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}
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}
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}
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static void apply_paint_antialias(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_ANTIALIAS)) {
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target->setAntiAlias(jsonPaint[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS].asBool());
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}
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}
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static void apply_paint_blur(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_BLUR)) {
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Json::Value blur = jsonPaint[SKJSONCANVAS_ATTRIBUTE_BLUR];
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SkScalar sigma = blur[SKJSONCANVAS_ATTRIBUTE_SIGMA].asFloat();
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SkBlurStyle style;
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const char* jsonStyle = blur[SKJSONCANVAS_ATTRIBUTE_STYLE].asCString();
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if (!strcmp(jsonStyle, SKJSONCANVAS_BLURSTYLE_NORMAL)) {
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style = SkBlurStyle::kNormal_SkBlurStyle;
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}
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else if (!strcmp(jsonStyle, SKJSONCANVAS_BLURSTYLE_SOLID)) {
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style = SkBlurStyle::kSolid_SkBlurStyle;
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}
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else if (!strcmp(jsonStyle, SKJSONCANVAS_BLURSTYLE_OUTER)) {
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style = SkBlurStyle::kOuter_SkBlurStyle;
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}
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else if (!strcmp(jsonStyle, SKJSONCANVAS_BLURSTYLE_INNER)) {
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style = SkBlurStyle::kInner_SkBlurStyle;
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}
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else {
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SkASSERT(false);
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style = SkBlurStyle::kNormal_SkBlurStyle;
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}
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SkBlurMaskFilter::BlurFlags flags;
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const char* jsonQuality = blur[SKJSONCANVAS_ATTRIBUTE_QUALITY].asCString();
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if (!strcmp(jsonQuality, SKJSONCANVAS_BLURQUALITY_LOW)) {
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flags = SkBlurMaskFilter::BlurFlags::kNone_BlurFlag;
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}
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else if (!strcmp(jsonQuality, SKJSONCANVAS_BLURQUALITY_HIGH)) {
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flags = SkBlurMaskFilter::BlurFlags::kHighQuality_BlurFlag;
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}
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else {
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SkASSERT(false);
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flags = SkBlurMaskFilter::BlurFlags::kNone_BlurFlag;
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}
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target->setMaskFilter(SkBlurMaskFilter::Create(style, sigma, flags));
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}
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}
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static void apply_paint_dashing(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_DASHING)) {
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Json::Value dash = jsonPaint[SKJSONCANVAS_ATTRIBUTE_DASHING];
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Json::Value jsonIntervals = dash[SKJSONCANVAS_ATTRIBUTE_INTERVALS];
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Json::ArrayIndex count = jsonIntervals.size();
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SkScalar* intervals = (SkScalar*) sk_malloc_throw(count * sizeof(SkScalar));
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for (Json::ArrayIndex i = 0; i < count; i++) {
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intervals[i] = jsonIntervals[i].asFloat();
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}
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SkScalar phase = dash[SKJSONCANVAS_ATTRIBUTE_PHASE].asFloat();
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target->setPathEffect(SkDashPathEffect::Create(intervals, count, phase));
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free(intervals);
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}
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}
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static void apply_paint_textalign(Json::Value& jsonPaint, SkPaint* target) {
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if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_TEXTALIGN)) {
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SkPaint::Align textAlign;
|
|
const char* jsonAlign = jsonPaint[SKJSONCANVAS_ATTRIBUTE_TEXTALIGN].asCString();
|
|
if (!strcmp(jsonAlign, SKJSONCANVAS_ALIGN_LEFT)) {
|
|
textAlign = SkPaint::kLeft_Align;
|
|
}
|
|
else if (!strcmp(jsonAlign, SKJSONCANVAS_ALIGN_CENTER)) {
|
|
textAlign = SkPaint::kCenter_Align;
|
|
}
|
|
else if (!strcmp(jsonAlign, SKJSONCANVAS_ALIGN_RIGHT)) {
|
|
textAlign = SkPaint::kRight_Align;
|
|
}
|
|
else {
|
|
SkASSERT(false);
|
|
textAlign = SkPaint::kLeft_Align;
|
|
}
|
|
target->setTextAlign(textAlign);
|
|
}
|
|
}
|
|
|
|
static void apply_paint_textsize(Json::Value& jsonPaint, SkPaint* target) {
|
|
if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_TEXTSIZE)) {
|
|
float textSize = jsonPaint[SKJSONCANVAS_ATTRIBUTE_TEXTSIZE].asFloat();
|
|
target->setTextSize(textSize);
|
|
}
|
|
}
|
|
|
|
static void apply_paint_textscalex(Json::Value& jsonPaint, SkPaint* target) {
|
|
if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_TEXTSCALEX)) {
|
|
float textScaleX = jsonPaint[SKJSONCANVAS_ATTRIBUTE_TEXTSCALEX].asFloat();
|
|
target->setTextScaleX(textScaleX);
|
|
}
|
|
}
|
|
|
|
static void apply_paint_textskewx(Json::Value& jsonPaint, SkPaint* target) {
|
|
if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_TEXTSKEWX)) {
|
|
float textSkewX = jsonPaint[SKJSONCANVAS_ATTRIBUTE_TEXTSKEWX].asFloat();
|
|
target->setTextSkewX(textSkewX);
|
|
}
|
|
}
|
|
|
|
static void apply_paint_typeface(Json::Value& jsonPaint, SkPaint* target) {
|
|
if (jsonPaint.isMember(SKJSONCANVAS_ATTRIBUTE_TYPEFACE)) {
|
|
Json::Value jsonTypeface = jsonPaint[SKJSONCANVAS_ATTRIBUTE_TYPEFACE];
|
|
Json::Value bytes = jsonTypeface[SKJSONCANVAS_ATTRIBUTE_BYTES];
|
|
void* data;
|
|
Json::ArrayIndex length = decode_data(bytes, &data);
|
|
SkMemoryStream buffer(data, length);
|
|
SkTypeface* typeface = SkTypeface::Deserialize(&buffer);
|
|
free(data);
|
|
target->setTypeface(typeface);
|
|
}
|
|
}
|
|
|
|
void Renderer::getPaint(Json::Value& paint, SkPaint* result) {
|
|
apply_paint_color(paint, result);
|
|
apply_paint_shader(paint, result);
|
|
apply_paint_patheffect(paint, result);
|
|
apply_paint_maskfilter(paint, result);
|
|
apply_paint_colorfilter(paint, result);
|
|
apply_paint_xfermode(paint, result);
|
|
apply_paint_imagefilter(paint, result);
|
|
apply_paint_style(paint, result);
|
|
apply_paint_strokewidth(paint, result);
|
|
apply_paint_strokemiter(paint, result);
|
|
apply_paint_cap(paint, result);
|
|
apply_paint_antialias(paint, result);
|
|
apply_paint_blur(paint, result);
|
|
apply_paint_dashing(paint, result);
|
|
apply_paint_textalign(paint, result);
|
|
apply_paint_textsize(paint, result);
|
|
apply_paint_textscalex(paint, result);
|
|
apply_paint_textskewx(paint, result);
|
|
apply_paint_typeface(paint, result);
|
|
}
|
|
|
|
void Renderer::getRect(Json::Value& rect, SkRect* result) {
|
|
result->set(rect[0].asFloat(), rect[1].asFloat(), rect[2].asFloat(), rect[3].asFloat());
|
|
}
|
|
|
|
void Renderer::getRRect(Json::Value& rrect, SkRRect* result) {
|
|
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::getMatrix(Json::Value& matrix, SkMatrix* result) {
|
|
SkScalar values[] = {
|
|
matrix[0][0].asFloat(), matrix[0][1].asFloat(), matrix[0][2].asFloat(),
|
|
matrix[1][0].asFloat(), matrix[1][1].asFloat(), matrix[1][2].asFloat(),
|
|
matrix[2][0].asFloat(), matrix[2][1].asFloat(), matrix[2][2].asFloat()
|
|
};
|
|
result->set9(values);
|
|
}
|
|
|
|
void Renderer::getPath(Json::Value& path, SkPath* result) {
|
|
const char* fillType = path[SKJSONCANVAS_ATTRIBUTE_FILLTYPE].asCString();
|
|
if (!strcmp(fillType, SKJSONCANVAS_FILLTYPE_WINDING)) {
|
|
result->setFillType(SkPath::kWinding_FillType);
|
|
}
|
|
else if (!strcmp(fillType, SKJSONCANVAS_FILLTYPE_EVENODD)) {
|
|
result->setFillType(SkPath::kEvenOdd_FillType);
|
|
}
|
|
else if (!strcmp(fillType, SKJSONCANVAS_FILLTYPE_INVERSEWINDING)) {
|
|
result->setFillType(SkPath::kInverseWinding_FillType);
|
|
}
|
|
else if (!strcmp(fillType, SKJSONCANVAS_FILLTYPE_INVERSEEVENODD)) {
|
|
result->setFillType(SkPath::kInverseEvenOdd_FillType);
|
|
}
|
|
Json::Value verbs = path[SKJSONCANVAS_ATTRIBUTE_VERBS];
|
|
for (Json::ArrayIndex i = 0; i < verbs.size(); i++) {
|
|
Json::Value verb = verbs[i];
|
|
if (verb.isString()) {
|
|
SkASSERT(!strcmp(verb.asCString(), SKJSONCANVAS_VERB_CLOSE));
|
|
result->close();
|
|
}
|
|
else {
|
|
if (verb.isMember(SKJSONCANVAS_VERB_MOVE)) {
|
|
Json::Value move = verb[SKJSONCANVAS_VERB_MOVE];
|
|
result->moveTo(move[0].asFloat(), move[1].asFloat());
|
|
}
|
|
else if (verb.isMember(SKJSONCANVAS_VERB_LINE)) {
|
|
Json::Value line = verb[SKJSONCANVAS_VERB_LINE];
|
|
result->lineTo(line[0].asFloat(), line[1].asFloat());
|
|
}
|
|
else if (verb.isMember(SKJSONCANVAS_VERB_QUAD)) {
|
|
Json::Value quad = verb[SKJSONCANVAS_VERB_QUAD];
|
|
result->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];
|
|
result->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];
|
|
result->conicTo(conic[0][0].asFloat(), conic[0][1].asFloat(),
|
|
conic[1][0].asFloat(), conic[1][1].asFloat(),
|
|
conic[2].asFloat());
|
|
}
|
|
else {
|
|
SkASSERT(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SkRegion::Op Renderer::getRegionOp(Json::Value& jsonOp) {
|
|
const char* op = jsonOp.asCString();
|
|
if (!strcmp(op, SKJSONCANVAS_REGIONOP_DIFFERENCE)) {
|
|
return SkRegion::kDifference_Op;
|
|
}
|
|
else if (!strcmp(op, SKJSONCANVAS_REGIONOP_INTERSECT)) {
|
|
return SkRegion::kIntersect_Op;
|
|
}
|
|
else if (!strcmp(op, SKJSONCANVAS_REGIONOP_UNION)) {
|
|
return SkRegion::kUnion_Op;
|
|
}
|
|
else if (!strcmp(op, SKJSONCANVAS_REGIONOP_XOR)) {
|
|
return SkRegion::kXOR_Op;
|
|
}
|
|
else if (!strcmp(op, SKJSONCANVAS_REGIONOP_REVERSE_DIFFERENCE)) {
|
|
return SkRegion::kReverseDifference_Op;
|
|
}
|
|
else if (!strcmp(op, SKJSONCANVAS_REGIONOP_REPLACE)) {
|
|
return SkRegion::kReplace_Op;
|
|
}
|
|
SkASSERT(false);
|
|
return SkRegion::kIntersect_Op;
|
|
}
|
|
|
|
void Renderer::processTranslate(Json::Value& command, SkCanvas* target) {
|
|
target->translate(command[SKJSONCANVAS_ATTRIBUTE_X].asFloat(),
|
|
command[SKJSONCANVAS_ATTRIBUTE_Y].asFloat());
|
|
}
|
|
|
|
void Renderer::processScale(Json::Value& command, SkCanvas* target) {
|
|
target->scale(command[SKJSONCANVAS_ATTRIBUTE_X].asFloat(),
|
|
command[SKJSONCANVAS_ATTRIBUTE_Y].asFloat());
|
|
}
|
|
|
|
void Renderer::processMatrix(Json::Value& command, SkCanvas* target) {
|
|
SkMatrix matrix;
|
|
this->getMatrix(command[SKJSONCANVAS_ATTRIBUTE_MATRIX], &matrix);
|
|
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::processSaveLayer(Json::Value& command, SkCanvas* target) {
|
|
SkCanvas::SaveLayerRec rec;
|
|
SkRect bounds;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_BOUNDS)) {
|
|
this->getRect(command[SKJSONCANVAS_ATTRIBUTE_BOUNDS], &bounds);
|
|
rec.fBounds = &bounds;
|
|
}
|
|
SkPaint paint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_PAINT)) {
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
rec.fPaint = &paint;
|
|
}
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_BACKDROP)) {
|
|
rec.fBackdrop = (SkImageFilter*) load_flattenable(command[SKJSONCANVAS_ATTRIBUTE_BACKDROP]);
|
|
}
|
|
target->saveLayer(rec);
|
|
if (rec.fBackdrop != nullptr) {
|
|
rec.fBackdrop->unref();
|
|
}
|
|
}
|
|
|
|
void Renderer::processPaint(Json::Value& command, SkCanvas* target) {
|
|
SkPaint paint;
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &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[SKJSONCANVAS_ATTRIBUTE_PAINT], &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[SKJSONCANVAS_ATTRIBUTE_PAINT], &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[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
target->drawOval(rect, paint);
|
|
}
|
|
|
|
void Renderer::processPath(Json::Value& command, SkCanvas* target) {
|
|
SkPath path;
|
|
this->getPath(command[SKJSONCANVAS_ATTRIBUTE_PATH], &path);
|
|
SkPaint paint;
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &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[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
Json::Value coords = command[SKJSONCANVAS_ATTRIBUTE_COORDS];
|
|
target->drawText(text, strlen(text), coords[0].asFloat(), coords[1].asFloat(), paint);
|
|
}
|
|
|
|
void Renderer::processPosText(Json::Value& command, SkCanvas* target) {
|
|
const char* text = command[SKJSONCANVAS_ATTRIBUTE_TEXT].asCString();
|
|
SkPaint paint;
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
Json::Value coords = command[SKJSONCANVAS_ATTRIBUTE_COORDS];
|
|
int count = (int) coords.size();
|
|
SkPoint* points = (SkPoint*) sk_malloc_throw(count * sizeof(SkPoint));
|
|
for (int i = 0; i < count; i++) {
|
|
points[i] = SkPoint::Make(coords[i][0].asFloat(), coords[i][1].asFloat());
|
|
}
|
|
target->drawPosText(text, strlen(text), points, paint);
|
|
free(points);
|
|
}
|
|
|
|
void Renderer::processTextOnPath(Json::Value& command, SkCanvas* target) {
|
|
const char* text = command[SKJSONCANVAS_ATTRIBUTE_TEXT].asCString();
|
|
SkPath path;
|
|
this->getPath(command[SKJSONCANVAS_ATTRIBUTE_PATH], &path);
|
|
SkMatrix* matrixPtr;
|
|
SkMatrix matrix;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_MATRIX)) {
|
|
this->getMatrix(command[SKJSONCANVAS_ATTRIBUTE_MATRIX], &matrix);
|
|
matrixPtr = &matrix;
|
|
}
|
|
else {
|
|
matrixPtr = nullptr;
|
|
}
|
|
SkPaint paint;
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
target->drawTextOnPath(text, strlen(text), path, matrixPtr, paint);
|
|
}
|
|
|
|
void Renderer::processTextBlob(Json::Value& command, SkCanvas* target) {
|
|
SkTextBlobBuilder builder;
|
|
Json::Value runs = command[SKJSONCANVAS_ATTRIBUTE_RUNS];
|
|
for (Json::ArrayIndex i = 0 ; i < runs.size(); i++) {
|
|
Json::Value run = runs[i];
|
|
SkPaint font;
|
|
font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
|
|
this->getPaint(run[SKJSONCANVAS_ATTRIBUTE_FONT], &font);
|
|
Json::Value glyphs = run[SKJSONCANVAS_ATTRIBUTE_GLYPHS];
|
|
int count = glyphs.size();
|
|
Json::Value coords = run[SKJSONCANVAS_ATTRIBUTE_COORDS];
|
|
SkScalar x = coords[0].asFloat();
|
|
SkScalar y = coords[1].asFloat();
|
|
if (run.isMember(SKJSONCANVAS_ATTRIBUTE_POSITIONS)) {
|
|
Json::Value positions = run[SKJSONCANVAS_ATTRIBUTE_POSITIONS];
|
|
if (positions.size() > 0 && positions[0].isNumeric()) {
|
|
SkTextBlobBuilder::RunBuffer buffer = builder.allocRunPosH(font, count, y);
|
|
for (int j = 0; j < count; j++) {
|
|
buffer.glyphs[j] = glyphs[j].asUInt();
|
|
buffer.pos[j] = positions[j].asFloat();
|
|
}
|
|
}
|
|
else {
|
|
SkTextBlobBuilder::RunBuffer buffer = builder.allocRunPos(font, count);
|
|
for (int j = 0; j < count; j++) {
|
|
buffer.glyphs[j] = glyphs[j].asUInt();
|
|
buffer.pos[j * 2] = positions[j][0].asFloat();
|
|
buffer.pos[j * 2 + 1] = positions[j][1].asFloat();
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
SkTextBlobBuilder::RunBuffer buffer = builder.allocRun(font, count, x, y);
|
|
for (int j = 0; j < count; j++) {
|
|
buffer.glyphs[j] = glyphs[j].asUInt();
|
|
}
|
|
}
|
|
}
|
|
SkScalar x = command[SKJSONCANVAS_ATTRIBUTE_X].asFloat();
|
|
SkScalar y = command[SKJSONCANVAS_ATTRIBUTE_Y].asFloat();
|
|
SkPaint paint;
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
target->drawTextBlob(builder.build(), x, y, 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[SKJSONCANVAS_ATTRIBUTE_PAINT], &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, this->getRegionOp(command[SKJSONCANVAS_ATTRIBUTE_REGIONOP]),
|
|
command[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS].asBool());
|
|
}
|
|
|
|
void Renderer::processClipRRect(Json::Value& command, SkCanvas* target) {
|
|
SkRRect rrect;
|
|
this->getRRect(command[SKJSONCANVAS_ATTRIBUTE_COORDS], &rrect);
|
|
target->clipRRect(rrect, this->getRegionOp(command[SKJSONCANVAS_ATTRIBUTE_REGIONOP]),
|
|
command[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS].asBool());
|
|
}
|
|
|
|
void Renderer::processClipPath(Json::Value& command, SkCanvas* target) {
|
|
SkPath path;
|
|
this->getPath(command[SKJSONCANVAS_ATTRIBUTE_PATH], &path);
|
|
target->clipPath(path, this->getRegionOp(command[SKJSONCANVAS_ATTRIBUTE_REGIONOP]),
|
|
command[SKJSONCANVAS_ATTRIBUTE_ANTIALIAS].asBool());
|
|
}
|
|
|
|
void Renderer::processImage(Json::Value& command, SkCanvas* target) {
|
|
SkImage* image = load_image(command[SKJSONCANVAS_ATTRIBUTE_IMAGE]);
|
|
if (image == nullptr) {
|
|
return;
|
|
}
|
|
Json::Value point = command[SKJSONCANVAS_ATTRIBUTE_COORDS];
|
|
SkPaint* paintPtr;
|
|
SkPaint paint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_PAINT)) {
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
paintPtr = &paint;
|
|
}
|
|
else {
|
|
paintPtr = nullptr;
|
|
}
|
|
target->drawImage(image, point[0].asFloat(), point[1].asFloat(), paintPtr);
|
|
image->unref();
|
|
}
|
|
|
|
void Renderer::processImageRect(Json::Value& command, SkCanvas* target) {
|
|
SkImage* image = load_image(command[SKJSONCANVAS_ATTRIBUTE_IMAGE]);
|
|
if (image == nullptr) {
|
|
return;
|
|
}
|
|
SkRect dst;
|
|
this->getRect(command[SKJSONCANVAS_ATTRIBUTE_DST], &dst);
|
|
SkPaint* paintPtr;
|
|
SkPaint paint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_PAINT)) {
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
paintPtr = &paint;
|
|
}
|
|
else {
|
|
paintPtr = nullptr;
|
|
}
|
|
SkCanvas::SrcRectConstraint constraint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_STRICT) &&
|
|
command[SKJSONCANVAS_ATTRIBUTE_STRICT].asBool()) {
|
|
constraint = SkCanvas::kStrict_SrcRectConstraint;
|
|
}
|
|
else {
|
|
constraint = SkCanvas::kFast_SrcRectConstraint;
|
|
}
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_SRC)) {
|
|
SkRect src;
|
|
this->getRect(command[SKJSONCANVAS_ATTRIBUTE_SRC], &src);
|
|
target->drawImageRect(image, src, dst, paintPtr, constraint);
|
|
}
|
|
else {
|
|
target->drawImageRect(image, dst, paintPtr, constraint);
|
|
}
|
|
image->unref();
|
|
}
|
|
|
|
void Renderer::processBitmap(Json::Value& command, SkCanvas* target) {
|
|
SkImage* image = load_image(command[SKJSONCANVAS_ATTRIBUTE_BITMAP]);
|
|
if (image == nullptr) {
|
|
return;
|
|
}
|
|
Json::Value point = command[SKJSONCANVAS_ATTRIBUTE_COORDS];
|
|
SkPaint* paintPtr;
|
|
SkPaint paint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_PAINT)) {
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
paintPtr = &paint;
|
|
}
|
|
else {
|
|
paintPtr = nullptr;
|
|
}
|
|
target->drawImage(image, point[0].asFloat(), point[1].asFloat(), paintPtr);
|
|
image->unref();
|
|
}
|
|
|
|
void Renderer::processBitmapRect(Json::Value& command, SkCanvas* target) {
|
|
SkBitmap* bitmap = load_bitmap(command[SKJSONCANVAS_ATTRIBUTE_BITMAP]);
|
|
if (bitmap == nullptr) {
|
|
return;
|
|
}
|
|
SkRect dst;
|
|
this->getRect(command[SKJSONCANVAS_ATTRIBUTE_DST], &dst);
|
|
SkPaint* paintPtr;
|
|
SkPaint paint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_PAINT)) {
|
|
this->getPaint(command[SKJSONCANVAS_ATTRIBUTE_PAINT], &paint);
|
|
paintPtr = &paint;
|
|
}
|
|
else {
|
|
paintPtr = nullptr;
|
|
}
|
|
SkCanvas::SrcRectConstraint constraint;
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_STRICT) &&
|
|
command[SKJSONCANVAS_ATTRIBUTE_STRICT].asBool()) {
|
|
constraint = SkCanvas::kStrict_SrcRectConstraint;
|
|
}
|
|
else {
|
|
constraint = SkCanvas::kFast_SrcRectConstraint;
|
|
}
|
|
if (command.isMember(SKJSONCANVAS_ATTRIBUTE_SRC)) {
|
|
SkRect src;
|
|
this->getRect(command[SKJSONCANVAS_ATTRIBUTE_SRC], &src);
|
|
target->drawBitmapRect(*bitmap, src, dst, paintPtr, constraint);
|
|
}
|
|
else {
|
|
target->drawBitmapRect(*bitmap, dst, paintPtr, constraint);
|
|
}
|
|
free(bitmap);
|
|
}
|
|
|
|
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
|