/* * Copyright 2018 Google LLC * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkBlendMode.h" #include "include/core/SkBlurTypes.h" #include "include/core/SkCanvas.h" #include "include/core/SkColor.h" #include "include/core/SkData.h" #include "include/core/SkEncodedImageFormat.h" #include "include/core/SkFilterQuality.h" #include "include/core/SkFont.h" #include "include/core/SkFontMgr.h" #include "include/core/SkFontTypes.h" #include "include/core/SkImage.h" #include "include/core/SkImageInfo.h" #include "include/core/SkMaskFilter.h" #include "include/core/SkPaint.h" #include "include/core/SkPath.h" #include "include/core/SkPathEffect.h" #include "include/core/SkPathMeasure.h" #include "include/core/SkPicture.h" #include "include/core/SkPictureRecorder.h" #include "include/core/SkScalar.h" #include "include/core/SkShader.h" #include "include/core/SkString.h" #include "include/core/SkStrokeRec.h" #include "include/core/SkSurface.h" #include "include/core/SkSurfaceProps.h" #include "include/core/SkTextBlob.h" #include "include/core/SkTypeface.h" #include "include/core/SkTypes.h" #include "include/core/SkVertices.h" #include "include/effects/SkCornerPathEffect.h" #include "include/effects/SkDashPathEffect.h" #include "include/effects/SkDiscretePathEffect.h" #include "include/effects/SkGradientShader.h" #include "include/effects/SkTrimPathEffect.h" #include "include/pathops/SkPathOps.h" #include "include/utils/SkParsePath.h" #include "include/utils/SkShadowUtils.h" #include "modules/skshaper/include/SkShaper.h" #include "src/core/SkFontMgrPriv.h" #include "src/core/SkMakeUnique.h" #include #include #include "modules/canvaskit/WasmAliases.h" #include #include #if SK_SUPPORT_GPU #include "include/gpu/GrBackendSurface.h" #include "include/gpu/GrContext.h" #include "include/gpu/gl/GrGLInterface.h" #include "include/gpu/gl/GrGLTypes.h" #include #include #endif // Aliases for less typing using BoneIndices = SkVertices::BoneIndices; using BoneWeights = SkVertices::BoneWeights; using Bone = SkVertices::Bone; struct SimpleMatrix { SkScalar scaleX, skewX, transX; SkScalar skewY, scaleY, transY; SkScalar pers0, pers1, pers2; }; SkMatrix toSkMatrix(const SimpleMatrix& sm) { return SkMatrix::MakeAll(sm.scaleX, sm.skewX , sm.transX, sm.skewY , sm.scaleY, sm.transY, sm.pers0 , sm.pers1 , sm.pers2); } SimpleMatrix toSimpleSkMatrix(const SkMatrix& sm) { SimpleMatrix m {sm[0], sm[1], sm[2], sm[3], sm[4], sm[5], sm[6], sm[7], sm[8]}; return m; } struct SimpleImageInfo { int width; int height; SkColorType colorType; SkAlphaType alphaType; // TODO color spaces? }; SkImageInfo toSkImageInfo(const SimpleImageInfo& sii) { return SkImageInfo::Make(sii.width, sii.height, sii.colorType, sii.alphaType); } #if SK_SUPPORT_GPU sk_sp MakeGrContext(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context) { EMSCRIPTEN_RESULT r = emscripten_webgl_make_context_current(context); if (r < 0) { printf("failed to make webgl context current %d\n", r); return nullptr; } // setup GrContext auto interface = GrGLMakeNativeInterface(); // setup contexts sk_sp grContext(GrContext::MakeGL(interface)); return grContext; } sk_sp MakeOnScreenGLSurface(sk_sp grContext, int width, int height) { glClearColor(0, 0, 0, 0); glClearStencil(0); glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); // Wrap the frame buffer object attached to the screen in a Skia render // target so Skia can render to it GrGLint buffer; glGetIntegerv(GL_FRAMEBUFFER_BINDING, &buffer); GrGLFramebufferInfo info; info.fFBOID = (GrGLuint) buffer; SkColorType colorType; info.fFormat = GL_RGBA8; colorType = kRGBA_8888_SkColorType; GrBackendRenderTarget target(width, height, 0, 8, info); sk_sp surface(SkSurface::MakeFromBackendRenderTarget(grContext.get(), target, kBottomLeft_GrSurfaceOrigin, colorType, nullptr, nullptr)); return surface; } sk_sp MakeRenderTarget(sk_sp grContext, int width, int height) { SkImageInfo info = SkImageInfo::MakeN32(width, height, SkAlphaType::kPremul_SkAlphaType); sk_sp surface(SkSurface::MakeRenderTarget(grContext.get(), SkBudgeted::kYes, info, 0, kBottomLeft_GrSurfaceOrigin, nullptr, true)); return surface; } sk_sp MakeRenderTarget(sk_sp grContext, SimpleImageInfo sii) { sk_sp surface(SkSurface::MakeRenderTarget(grContext.get(), SkBudgeted::kYes, toSkImageInfo(sii), 0, kBottomLeft_GrSurfaceOrigin, nullptr, true)); return surface; } #endif //======================================================================================== // Path things //======================================================================================== // All these Apply* methods are simple wrappers to avoid returning an object. // The default WASM bindings produce code that will leak if a return value // isn't assigned to a JS variable and has delete() called on it. // These Apply methods, combined with the smarter binding code allow for chainable // commands that don't leak if the return value is ignored (i.e. when used intuitively). void ApplyAddArc(SkPath& orig, const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle) { orig.addArc(oval, startAngle, sweepAngle); } void ApplyAddPath(SkPath& orig, const SkPath& newPath, SkScalar scaleX, SkScalar skewX, SkScalar transX, SkScalar skewY, SkScalar scaleY, SkScalar transY, SkScalar pers0, SkScalar pers1, SkScalar pers2, bool extendPath) { SkMatrix m = SkMatrix::MakeAll(scaleX, skewX , transX, skewY , scaleY, transY, pers0 , pers1 , pers2); orig.addPath(newPath, m, extendPath ? SkPath::kExtend_AddPathMode : SkPath::kAppend_AddPathMode); } void ApplyAddRect(SkPath& path, SkScalar left, SkScalar top, SkScalar right, SkScalar bottom, bool ccw) { path.addRect(left, top, right, bottom, ccw ? SkPath::Direction::kCCW_Direction : SkPath::Direction::kCW_Direction); } void ApplyAddRoundRect(SkPath& path, SkScalar left, SkScalar top, SkScalar right, SkScalar bottom, uintptr_t /* SkScalar* */ rPtr, bool ccw) { // See comment below for uintptr_t explanation const SkScalar* radii = reinterpret_cast(rPtr); path.addRoundRect(SkRect::MakeLTRB(left, top, right, bottom), radii, ccw ? SkPath::Direction::kCCW_Direction : SkPath::Direction::kCW_Direction); } void ApplyArcTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, SkScalar radius) { p.arcTo(x1, y1, x2, y2, radius); } void ApplyArcToAngle(SkPath& p, SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, bool forceMoveTo) { p.arcTo(oval, startAngle, sweepAngle, forceMoveTo); } void ApplyClose(SkPath& p) { p.close(); } void ApplyConicTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, SkScalar w) { p.conicTo(x1, y1, x2, y2, w); } void ApplyCubicTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, SkScalar x3, SkScalar y3) { p.cubicTo(x1, y1, x2, y2, x3, y3); } void ApplyLineTo(SkPath& p, SkScalar x, SkScalar y) { p.lineTo(x, y); } void ApplyMoveTo(SkPath& p, SkScalar x, SkScalar y) { p.moveTo(x, y); } void ApplyReset(SkPath& p) { p.reset(); } void ApplyRewind(SkPath& p) { p.rewind(); } void ApplyQuadTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2) { p.quadTo(x1, y1, x2, y2); } void ApplyTransform(SkPath& orig, SkScalar scaleX, SkScalar skewX, SkScalar transX, SkScalar skewY, SkScalar scaleY, SkScalar transY, SkScalar pers0, SkScalar pers1, SkScalar pers2) { SkMatrix m = SkMatrix::MakeAll(scaleX, skewX , transX, skewY , scaleY, transY, pers0 , pers1 , pers2); orig.transform(m); } bool EMSCRIPTEN_KEEPALIVE ApplySimplify(SkPath& path) { return Simplify(path, &path); } bool EMSCRIPTEN_KEEPALIVE ApplyPathOp(SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) { return Op(pathOne, pathTwo, op, &pathOne); } JSString EMSCRIPTEN_KEEPALIVE ToSVGString(const SkPath& path) { SkString s; SkParsePath::ToSVGString(path, &s); return emscripten::val(s.c_str()); } SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromSVGString(std::string str) { SkPath path; if (SkParsePath::FromSVGString(str.c_str(), &path)) { return emscripten::val(path); } return emscripten::val::null(); } SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromOp(const SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) { SkPath out; if (Op(pathOne, pathTwo, op, &out)) { return emscripten::val(out); } return emscripten::val::null(); } SkPath EMSCRIPTEN_KEEPALIVE CopyPath(const SkPath& a) { SkPath copy(a); return copy; } bool EMSCRIPTEN_KEEPALIVE Equals(const SkPath& a, const SkPath& b) { return a == b; } // ================================================================================= // Creating/Exporting Paths with cmd arrays // ================================================================================= static const int MOVE = 0; static const int LINE = 1; static const int QUAD = 2; static const int CONIC = 3; static const int CUBIC = 4; static const int CLOSE = 5; template void VisitPath(const SkPath& p, VisitFunc&& f) { SkPath::RawIter iter(p); SkPoint pts[4]; SkPath::Verb verb; while ((verb = iter.next(pts)) != SkPath::kDone_Verb) { f(verb, pts, iter); } } JSArray EMSCRIPTEN_KEEPALIVE ToCmds(const SkPath& path) { JSArray cmds = emscripten::val::array(); VisitPath(path, [&cmds](SkPath::Verb verb, const SkPoint pts[4], SkPath::RawIter iter) { JSArray cmd = emscripten::val::array(); switch (verb) { case SkPath::kMove_Verb: cmd.call("push", MOVE, pts[0].x(), pts[0].y()); break; case SkPath::kLine_Verb: cmd.call("push", LINE, pts[1].x(), pts[1].y()); break; case SkPath::kQuad_Verb: cmd.call("push", QUAD, pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y()); break; case SkPath::kConic_Verb: cmd.call("push", CONIC, pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y(), iter.conicWeight()); break; case SkPath::kCubic_Verb: cmd.call("push", CUBIC, pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y(), pts[3].x(), pts[3].y()); break; case SkPath::kClose_Verb: cmd.call("push", CLOSE); break; case SkPath::kDone_Verb: SkASSERT(false); break; } cmds.call("push", cmd); }); return cmds; } // This type signature is a mess, but it's necessary. See, we can't use "bind" (EMSCRIPTEN_BINDINGS) // and pointers to primitive types (Only bound types like SkPoint). We could if we used // cwrap (see https://becominghuman.ai/passing-and-returning-webassembly-array-parameters-a0f572c65d97) // but that requires us to stick to C code and, AFAIK, doesn't allow us to return nice things like // SkPath or SkOpBuilder. // // So, basically, if we are using C++ and EMSCRIPTEN_BINDINGS, we can't have primative pointers // in our function type signatures. (this gives an error message like "Cannot call foo due to unbound // types Pi, Pf"). But, we can just pretend they are numbers and cast them to be pointers and // the compiler is happy. SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromCmds(uintptr_t /* float* */ cptr, int numCmds) { const auto* cmds = reinterpret_cast(cptr); SkPath path; float x1, y1, x2, y2, x3, y3; // if there are not enough arguments, bail with the path we've constructed so far. #define CHECK_NUM_ARGS(n) \ if ((i + n) > numCmds) { \ SkDebugf("Not enough args to match the verbs. Saw %d commands\n", numCmds); \ return emscripten::val::null(); \ } for(int i = 0; i < numCmds;){ switch (sk_float_floor2int(cmds[i++])) { case MOVE: CHECK_NUM_ARGS(2); x1 = cmds[i++], y1 = cmds[i++]; path.moveTo(x1, y1); break; case LINE: CHECK_NUM_ARGS(2); x1 = cmds[i++], y1 = cmds[i++]; path.lineTo(x1, y1); break; case QUAD: CHECK_NUM_ARGS(4); x1 = cmds[i++], y1 = cmds[i++]; x2 = cmds[i++], y2 = cmds[i++]; path.quadTo(x1, y1, x2, y2); break; case CONIC: CHECK_NUM_ARGS(5); x1 = cmds[i++], y1 = cmds[i++]; x2 = cmds[i++], y2 = cmds[i++]; x3 = cmds[i++]; // weight path.conicTo(x1, y1, x2, y2, x3); break; case CUBIC: CHECK_NUM_ARGS(6); x1 = cmds[i++], y1 = cmds[i++]; x2 = cmds[i++], y2 = cmds[i++]; x3 = cmds[i++], y3 = cmds[i++]; path.cubicTo(x1, y1, x2, y2, x3, y3); break; case CLOSE: path.close(); break; default: SkDebugf(" path: UNKNOWN command %f, aborting dump...\n", cmds[i-1]); return emscripten::val::null(); } } #undef CHECK_NUM_ARGS return emscripten::val(path); } //======================================================================================== // Path Effects //======================================================================================== bool ApplyDash(SkPath& path, SkScalar on, SkScalar off, SkScalar phase) { SkScalar intervals[] = { on, off }; auto pe = SkDashPathEffect::Make(intervals, 2, phase); if (!pe) { SkDebugf("Invalid args to dash()\n"); return false; } SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle); if (pe->filterPath(&path, path, &rec, nullptr)) { return true; } SkDebugf("Could not make dashed path\n"); return false; } bool ApplyTrim(SkPath& path, SkScalar startT, SkScalar stopT, bool isComplement) { auto mode = isComplement ? SkTrimPathEffect::Mode::kInverted : SkTrimPathEffect::Mode::kNormal; auto pe = SkTrimPathEffect::Make(startT, stopT, mode); if (!pe) { SkDebugf("Invalid args to trim(): startT and stopT must be in [0,1]\n"); return false; } SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle); if (pe->filterPath(&path, path, &rec, nullptr)) { return true; } SkDebugf("Could not trim path\n"); return false; } struct StrokeOpts { // Default values are set in interface.js which allows clients // to set any number of them. Otherwise, the binding code complains if // any are omitted. SkScalar width; SkScalar miter_limit; SkPaint::Join join; SkPaint::Cap cap; float precision; }; bool ApplyStroke(SkPath& path, StrokeOpts opts) { SkPaint p; p.setStyle(SkPaint::kStroke_Style); p.setStrokeCap(opts.cap); p.setStrokeJoin(opts.join); p.setStrokeWidth(opts.width); p.setStrokeMiter(opts.miter_limit); return p.getFillPath(path, &path, nullptr, opts.precision); } // to map from raw memory to a uint8array Uint8Array getSkDataBytes(const SkData *data) { return Uint8Array(typed_memory_view(data->size(), data->bytes())); } // Text Shaping abstraction struct ShapedTextOpts { SkFont font; bool leftToRight; std::string text; SkScalar width; }; std::unique_ptr shaper; static sk_sp do_shaping(const ShapedTextOpts& opts, SkPoint* pt) { SkTextBlobBuilderRunHandler builder(opts.text.c_str(), {0, 0}); if (!shaper) { shaper = SkShaper::Make(); } shaper->shape(opts.text.c_str(), opts.text.length(), opts.font, opts.leftToRight, opts.width, &builder); *pt = builder.endPoint(); return builder.makeBlob(); } class ShapedText { public: ShapedText(ShapedTextOpts opts) : fOpts(opts) {} SkRect getBounds() { this->init(); return SkRect::MakeLTRB(0, 0, fOpts.width, fPoint.y()); } SkTextBlob* blob() { this->init(); return fBlob.get(); } private: const ShapedTextOpts fOpts; SkPoint fPoint; sk_sp fBlob; void init() { if (!fBlob) { fBlob = do_shaping(fOpts, &fPoint); } } }; void drawShapedText(SkCanvas& canvas, ShapedText st, SkScalar x, SkScalar y, SkPaint paint) { canvas.drawTextBlob(st.blob(), x, y, paint); } // This is simpler than dealing with an SkPoint and SkVector struct PosTan { SkScalar px, py, tx, ty; }; // These objects have private destructors / delete mthods - I don't think // we need to do anything other than tell emscripten to do nothing. namespace emscripten { namespace internal { template void raw_destructor(ClassType *); template<> void raw_destructor(SkData *ptr) { } template<> void raw_destructor(SkTypeface *ptr) { } template<> void raw_destructor(SkVertices *ptr) { } template<> void raw_destructor(SkTextBlob *ptr) { } } } // Some timesignatures below have uintptr_t instead of a pointer to a primative // type (e.g. SkScalar). This is necessary because we can't use "bind" (EMSCRIPTEN_BINDINGS) // and pointers to primitive types (Only bound types like SkPoint). We could if we used // cwrap (see https://becominghuman.ai/passing-and-returning-webassembly-array-parameters-a0f572c65d97) // but that requires us to stick to C code and, AFAIK, doesn't allow us to return nice things like // SkPath or SkCanvas. // // So, basically, if we are using C++ and EMSCRIPTEN_BINDINGS, we can't have primative pointers // in our function type signatures. (this gives an error message like "Cannot call foo due to unbound // types Pi, Pf"). But, we can just pretend they are numbers and cast them to be pointers and // the compiler is happy. EMSCRIPTEN_BINDINGS(Skia) { #if SK_SUPPORT_GPU function("currentContext", &emscripten_webgl_get_current_context); function("setCurrentContext", &emscripten_webgl_make_context_current); function("MakeGrContext", &MakeGrContext); function("MakeOnScreenGLSurface", &MakeOnScreenGLSurface); function("MakeRenderTarget", select_overload(sk_sp, int, int)>(&MakeRenderTarget)); function("MakeRenderTarget", select_overload(sk_sp, SimpleImageInfo)>(&MakeRenderTarget)); constant("gpu", true); #endif function("_decodeImage", optional_override([](uintptr_t /* uint8_t* */ iptr, size_t length)->sk_sp { uint8_t* imgData = reinterpret_cast(iptr); sk_sp bytes = SkData::MakeFromMalloc(imgData, length); return SkImage::MakeFromEncoded(std::move(bytes)); }), allow_raw_pointers()); function("_getRasterDirectSurface", optional_override([](const SimpleImageInfo ii, uintptr_t /* uint8_t* */ pPtr, size_t rowBytes)->sk_sp { uint8_t* pixels = reinterpret_cast(pPtr); SkImageInfo imageInfo = toSkImageInfo(ii); return SkSurface::MakeRasterDirect(imageInfo, pixels, rowBytes, nullptr); }), allow_raw_pointers()); function("_getRasterN32PremulSurface", optional_override([](int width, int height)->sk_sp { return SkSurface::MakeRasterN32Premul(width, height, nullptr); }), allow_raw_pointers()); function("getSkDataBytes", &getSkDataBytes, allow_raw_pointers()); function("MakeSkCornerPathEffect", &SkCornerPathEffect::Make, allow_raw_pointers()); function("MakeSkDiscretePathEffect", &SkDiscretePathEffect::Make, allow_raw_pointers()); function("MakeBlurMaskFilter", optional_override([](SkBlurStyle style, SkScalar sigma, bool respectCTM)->sk_sp { // Adds a little helper because emscripten doesn't expose default params. return SkMaskFilter::MakeBlur(style, sigma, respectCTM); }), allow_raw_pointers()); function("_MakePathFromCmds", &MakePathFromCmds); function("MakePathFromOp", &MakePathFromOp); function("MakePathFromSVGString", &MakePathFromSVGString); // These won't be called directly, there's a JS helper to deal with typed arrays. function("_MakeSkDashPathEffect", optional_override([](uintptr_t /* float* */ cptr, int count, SkScalar phase)->sk_sp { // See comment above for uintptr_t explanation const float* intervals = reinterpret_cast(cptr); return SkDashPathEffect::Make(intervals, count, phase); }), allow_raw_pointers()); function("_MakeImage", optional_override([](SimpleImageInfo ii, uintptr_t /* uint8_t* */ pPtr, int plen, size_t rowBytes)->sk_sp { // See comment above for uintptr_t explanation uint8_t* pixels = reinterpret_cast(pPtr); SkImageInfo info = toSkImageInfo(ii); sk_sp pixelData = SkData::MakeFromMalloc(pixels, plen); return SkImage::MakeRasterData(info, pixelData, rowBytes); }), allow_raw_pointers()); function("_MakeLinearGradientShader", optional_override([](SkPoint start, SkPoint end, uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, int count, SkTileMode mode, uint32_t flags)->sk_sp { SkPoint points[] = { start, end }; // See comment above for uintptr_t explanation const SkColor* colors = reinterpret_cast (cPtr); const SkScalar* positions = reinterpret_cast(pPtr); return SkGradientShader::MakeLinear(points, colors, positions, count, mode, flags, nullptr); }), allow_raw_pointers()); function("_MakeLinearGradientShader", optional_override([](SkPoint start, SkPoint end, uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, int count, SkTileMode mode, uint32_t flags, const SimpleMatrix& lm)->sk_sp { SkPoint points[] = { start, end }; // See comment above for uintptr_t explanation const SkColor* colors = reinterpret_cast (cPtr); const SkScalar* positions = reinterpret_cast(pPtr); SkMatrix localMatrix = toSkMatrix(lm); return SkGradientShader::MakeLinear(points, colors, positions, count, mode, flags, &localMatrix); }), allow_raw_pointers()); function("_MakeRadialGradientShader", optional_override([](SkPoint center, SkScalar radius, uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, int count, SkTileMode mode, uint32_t flags)->sk_sp { // See comment above for uintptr_t explanation const SkColor* colors = reinterpret_cast (cPtr); const SkScalar* positions = reinterpret_cast(pPtr); return SkGradientShader::MakeRadial(center, radius, colors, positions, count, mode, flags, nullptr); }), allow_raw_pointers()); function("_MakeRadialGradientShader", optional_override([](SkPoint center, SkScalar radius, uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, int count, SkTileMode mode, uint32_t flags, const SimpleMatrix& lm)->sk_sp { // See comment above for uintptr_t explanation const SkColor* colors = reinterpret_cast (cPtr); const SkScalar* positions = reinterpret_cast(pPtr); SkMatrix localMatrix = toSkMatrix(lm); return SkGradientShader::MakeRadial(center, radius, colors, positions, count, mode, flags, &localMatrix); }), allow_raw_pointers()); function("_MakeTwoPointConicalGradientShader", optional_override([]( SkPoint start, SkScalar startRadius, SkPoint end, SkScalar endRadius, uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, int count, SkTileMode mode, uint32_t flags)->sk_sp { // See comment above for uintptr_t explanation const SkColor* colors = reinterpret_cast (cPtr); const SkScalar* positions = reinterpret_cast(pPtr); return SkGradientShader::MakeTwoPointConical(start, startRadius, end, endRadius, colors, positions, count, mode, flags, nullptr); }), allow_raw_pointers()); function("_MakeTwoPointConicalGradientShader", optional_override([]( SkPoint start, SkScalar startRadius, SkPoint end, SkScalar endRadius, uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, int count, SkTileMode mode, uint32_t flags, const SimpleMatrix& lm)->sk_sp { // See comment above for uintptr_t explanation const SkColor* colors = reinterpret_cast (cPtr); const SkScalar* positions = reinterpret_cast(pPtr); SkMatrix localMatrix = toSkMatrix(lm); return SkGradientShader::MakeTwoPointConical(start, startRadius, end, endRadius, colors, positions, count, mode, flags, &localMatrix); }), allow_raw_pointers()); #if SK_SUPPORT_GPU class_("GrContext") .smart_ptr>("sk_sp") .function("getResourceCacheLimitBytes", optional_override([](GrContext& self)->size_t { int maxResources = 0;// ignored size_t currMax = 0; self.getResourceCacheLimits(&maxResources, &currMax); return currMax; })) .function("getResourceCacheUsageBytes", optional_override([](GrContext& self)->size_t { int usedResources = 0;// ignored size_t currUsage = 0; self.getResourceCacheUsage(&usedResources, &currUsage); return currUsage; })) .function("setResourceCacheLimitBytes", optional_override([](GrContext& self, size_t maxResourceBytes)->void { int maxResources = 0; size_t currMax = 0; // ignored self.getResourceCacheLimits(&maxResources, &currMax); self.setResourceCacheLimits(maxResources, maxResourceBytes); })); #endif class_("SkCanvas") .constructor<>() .function("clear", &SkCanvas::clear) .function("clipPath", select_overload(&SkCanvas::clipPath)) .function("clipRect", select_overload(&SkCanvas::clipRect)) .function("concat", optional_override([](SkCanvas& self, const SimpleMatrix& m) { self.concat(toSkMatrix(m)); })) .function("drawArc", &SkCanvas::drawArc) .function("_drawAtlas", optional_override([](SkCanvas& self, const sk_sp& atlas, uintptr_t /* SkRSXform* */ xptr, uintptr_t /* SkRect* */ rptr, uintptr_t /* SkColor* */ cptr, int count, SkBlendMode mode, const SkPaint* paint)->void { // See comment above for uintptr_t explanation const SkRSXform* dstXforms = reinterpret_cast(xptr); const SkRect* srcRects = reinterpret_cast(rptr); const SkColor* colors = nullptr; if (cptr) { colors = reinterpret_cast(cptr); } self.drawAtlas(atlas, dstXforms, srcRects, colors, count, mode, nullptr, paint); }), allow_raw_pointers()) .function("drawImage", select_overload&, SkScalar, SkScalar, const SkPaint*)>(&SkCanvas::drawImage), allow_raw_pointers()) .function("drawImageRect", optional_override([](SkCanvas& self, const sk_sp& image, SkRect src, SkRect dst, const SkPaint* paint, bool fastSample)->void { self.drawImageRect(image, src, dst, paint, fastSample ? SkCanvas::kFast_SrcRectConstraint : SkCanvas::kStrict_SrcRectConstraint); }), allow_raw_pointers()) .function("drawLine", select_overload(&SkCanvas::drawLine)) .function("drawOval", &SkCanvas::drawOval) .function("drawPaint", &SkCanvas::drawPaint) .function("drawPath", &SkCanvas::drawPath) // Of note, picture is *not* what is colloquially thought of as a "picture", what we call // a bitmap. An SkPicture is a series of draw commands. .function("drawPicture", select_overload&)>(&SkCanvas::drawPicture)) .function("drawRect", &SkCanvas::drawRect) .function("drawRoundRect", &SkCanvas::drawRoundRect) .function("drawShadow", optional_override([](SkCanvas& self, const SkPath& path, const SkPoint3& zPlaneParams, const SkPoint3& lightPos, SkScalar lightRadius, SkColor ambientColor, SkColor spotColor, uint32_t flags) { SkShadowUtils::DrawShadow(&self, path, zPlaneParams, lightPos, lightRadius, ambientColor, spotColor, flags); })) .function("_drawShapedText", &drawShapedText) .function("_drawSimpleText", optional_override([](SkCanvas& self, uintptr_t /* char* */ sptr, size_t len, SkScalar x, SkScalar y, const SkFont& font, const SkPaint& paint) { // See comment above for uintptr_t explanation const char* str = reinterpret_cast(sptr); self.drawSimpleText(str, len, SkTextEncoding::kUTF8, x, y, font, paint); })) .function("drawTextBlob", select_overload&, SkScalar, SkScalar, const SkPaint&)>(&SkCanvas::drawTextBlob)) .function("drawVertices", select_overload&, SkBlendMode, const SkPaint&)>(&SkCanvas::drawVertices)) .function("flush", &SkCanvas::flush) .function("getTotalMatrix", optional_override([](const SkCanvas& self)->SimpleMatrix { SkMatrix m = self.getTotalMatrix(); return toSimpleSkMatrix(m); })) .function("makeSurface", optional_override([](SkCanvas& self, SimpleImageInfo sii)->sk_sp { return self.makeSurface(toSkImageInfo(sii), nullptr); }), allow_raw_pointers()) .function("_readPixels", optional_override([](SkCanvas& self, SimpleImageInfo di, uintptr_t /* uint8_t* */ pPtr, size_t dstRowBytes, int srcX, int srcY) { uint8_t* pixels = reinterpret_cast(pPtr); SkImageInfo dstInfo = toSkImageInfo(di); return self.readPixels(dstInfo, pixels, dstRowBytes, srcX, srcY); })) .function("restore", &SkCanvas::restore) .function("restoreToCount", &SkCanvas::restoreToCount) .function("rotate", select_overload(&SkCanvas::rotate)) .function("save", &SkCanvas::save) .function("saveLayer", select_overload(&SkCanvas::saveLayer), allow_raw_pointers()) .function("scale", &SkCanvas::scale) .function("skew", &SkCanvas::skew) .function("translate", &SkCanvas::translate) .function("_writePixels", optional_override([](SkCanvas& self, SimpleImageInfo di, uintptr_t /* uint8_t* */ pPtr, size_t srcRowBytes, int dstX, int dstY) { uint8_t* pixels = reinterpret_cast(pPtr); SkImageInfo dstInfo = toSkImageInfo(di); return self.writePixels(dstInfo, pixels, srcRowBytes, dstX, dstY); })) ; class_("SkData") .smart_ptr>("sk_sp>") .function("size", &SkData::size); class_("SkFont") .constructor<>() .constructor>() .constructor, SkScalar>() .constructor, SkScalar, SkScalar, SkScalar>() .function("getScaleX", &SkFont::getScaleX) .function("getSize", &SkFont::getSize) .function("getSkewX", &SkFont::getSkewX) .function("getTypeface", &SkFont::getTypeface, allow_raw_pointers()) .function("_getWidths", optional_override([](SkFont& self, uintptr_t /* char* */ sptr, size_t strLen, size_t expectedCodePoints, uintptr_t /* SkScalar* */ wptr) -> bool { char* str = reinterpret_cast(sptr); SkScalar* widths = reinterpret_cast(wptr); SkGlyphID* glyphStorage = new SkGlyphID[expectedCodePoints]; int actualCodePoints = self.textToGlyphs(str, strLen, SkTextEncoding::kUTF8, glyphStorage, expectedCodePoints); if (actualCodePoints != expectedCodePoints) { SkDebugf("Actually %d glyphs, expected only %d\n", actualCodePoints, expectedCodePoints); return false; } self.getWidths(glyphStorage, actualCodePoints, widths); delete[] glyphStorage; return true; })) .function("measureText", optional_override([](SkFont& self, std::string text) { // TODO(kjlubick): This does not work well for non-ascii // Need to maybe add a helper in interface.js that supports UTF-8 // Otherwise, go with std::wstring and set UTF-32 encoding. return self.measureText(text.c_str(), text.length(), SkTextEncoding::kUTF8); })) .function("setScaleX", &SkFont::setScaleX) .function("setSize", &SkFont::setSize) .function("setSkewX", &SkFont::setSkewX) .function("setTypeface", &SkFont::setTypeface, allow_raw_pointers()); class_("ShapedText") .constructor() .function("getBounds", &ShapedText::getBounds); class_("SkFontMgr") .smart_ptr>("sk_sp") .class_function("RefDefault", &SkFontMgr::RefDefault) #ifdef SK_DEBUG .function("dumpFamilies", optional_override([](SkFontMgr& self) { int numFam = self.countFamilies(); SkDebugf("There are %d font families\n"); for (int i = 0 ; i< numFam; i++) { SkString s; self.getFamilyName(i, &s); SkDebugf("\t%s", s.c_str()); } })) #endif .function("countFamilies", &SkFontMgr::countFamilies) .function("_makeTypefaceFromData", optional_override([](SkFontMgr& self, uintptr_t /* uint8_t* */ fPtr, int flen)->sk_sp { // See comment above for uintptr_t explanation uint8_t* font = reinterpret_cast(fPtr); sk_sp fontData = SkData::MakeFromMalloc(font, flen); return self.makeFromData(fontData); }), allow_raw_pointers()); class_("SkImage") .smart_ptr>("sk_sp") .function("height", &SkImage::height) .function("width", &SkImage::width) .function("_encodeToData", select_overload()const>(&SkImage::encodeToData)) .function("_encodeToDataWithFormat", select_overload(SkEncodedImageFormat encodedImageFormat, int quality)const>(&SkImage::encodeToData)) // Allow localMatrix to be optional, so we have 2 declarations of these shaders .function("_makeShader", optional_override([](sk_sp self, SkTileMode tx, SkTileMode ty)->sk_sp { return self->makeShader(tx, ty, nullptr); }), allow_raw_pointers()) .function("_makeShader", optional_override([](sk_sp self, SkTileMode tx, SkTileMode ty, const SimpleMatrix& lm)->sk_sp { SkMatrix localMatrix = toSkMatrix(lm); return self->makeShader(tx, ty, &localMatrix); }), allow_raw_pointers()) .function("_readPixels", optional_override([](sk_sp self, SimpleImageInfo sii, uintptr_t /* uint8_t* */ pPtr, size_t dstRowBytes, int srcX, int srcY)->bool { // See comment above for uintptr_t explanation uint8_t* pixels = reinterpret_cast(pPtr); SkImageInfo ii = toSkImageInfo(sii); return self->readPixels(ii, pixels, dstRowBytes, srcX, srcY); }), allow_raw_pointers()); class_("SkMaskFilter") .smart_ptr>("sk_sp"); class_("SkPaint") .constructor<>() .function("copy", optional_override([](const SkPaint& self)->SkPaint { SkPaint p(self); return p; })) .function("getBlendMode", &SkPaint::getBlendMode) .function("getColor", &SkPaint::getColor) .function("getFilterQuality", &SkPaint::getFilterQuality) .function("getStrokeCap", &SkPaint::getStrokeCap) .function("getStrokeJoin", &SkPaint::getStrokeJoin) .function("getStrokeMiter", &SkPaint::getStrokeMiter) .function("getStrokeWidth", &SkPaint::getStrokeWidth) .function("setAntiAlias", &SkPaint::setAntiAlias) .function("setBlendMode", &SkPaint::setBlendMode) .function("setColor", optional_override([](SkPaint& self, SkColor c) { self.setColor(c); })) .function("setColorf", optional_override([](SkPaint& self, float r, float g, float b, float a) { self.setColor({r, g, b, a}); })) .function("setFilterQuality", &SkPaint::setFilterQuality) .function("setMaskFilter", &SkPaint::setMaskFilter) .function("setPathEffect", &SkPaint::setPathEffect) .function("setShader", &SkPaint::setShader) .function("setStrokeCap", &SkPaint::setStrokeCap) .function("setStrokeJoin", &SkPaint::setStrokeJoin) .function("setStrokeMiter", &SkPaint::setStrokeMiter) .function("setStrokeWidth", &SkPaint::setStrokeWidth) .function("setStyle", &SkPaint::setStyle); class_("SkPathEffect") .smart_ptr>("sk_sp"); class_("SkPath") .constructor<>() .constructor() .function("_addArc", &ApplyAddArc) // interface.js has 3 overloads of addPath .function("_addPath", &ApplyAddPath) // interface.js has 4 overloads of addRect .function("_addRect", &ApplyAddRect) // interface.js has 4 overloads of addRoundRect .function("_addRoundRect", &ApplyAddRoundRect) .function("_arcTo", &ApplyArcTo) .function("_arcTo", &ApplyArcToAngle) .function("_close", &ApplyClose) .function("_conicTo", &ApplyConicTo) .function("countPoints", &SkPath::countPoints) .function("contains", &SkPath::contains) .function("_cubicTo", &ApplyCubicTo) .function("getPoint", &SkPath::getPoint) .function("isEmpty", &SkPath::isEmpty) .function("isVolatile", &SkPath::isVolatile) .function("_lineTo", &ApplyLineTo) .function("_moveTo", &ApplyMoveTo) .function("reset", &ApplyReset) .function("rewind", &ApplyRewind) .function("_quadTo", &ApplyQuadTo) .function("setIsVolatile", &SkPath::setIsVolatile) .function("_transform", select_overload(&ApplyTransform)) // PathEffects .function("_dash", &ApplyDash) .function("_trim", &ApplyTrim) .function("_stroke", &ApplyStroke) // PathOps .function("_simplify", &ApplySimplify) .function("_op", &ApplyPathOp) // Exporting .function("toSVGString", &ToSVGString) .function("toCmds", &ToCmds) .function("setFillType", &SkPath::setFillType) .function("getFillType", &SkPath::getFillType) .function("getBounds", &SkPath::getBounds) .function("computeTightBounds", &SkPath::computeTightBounds) .function("equals", &Equals) .function("copy", &CopyPath) #ifdef SK_DEBUG .function("dump", select_overload(&SkPath::dump)) .function("dumpHex", select_overload(&SkPath::dumpHex)) #endif ; class_("SkPathMeasure") .constructor() .function("getLength", &SkPathMeasure::getLength) .function("getPosTan", optional_override([](SkPathMeasure& self, SkScalar distance) -> PosTan { SkPoint p{0, 0}; SkVector v{0, 0}; if (!self.getPosTan(distance, &p, &v)) { SkDebugf("zero-length path in getPosTan\n"); } return PosTan{p.x(), p.y(), v.x(), v.y()}; })) .function("isClosed", &SkPathMeasure::isClosed) .function("nextContour", &SkPathMeasure::nextContour); class_("SkPictureRecorder") .constructor<>() .function("beginRecording", optional_override([](SkPictureRecorder& self, const SkRect& bounds) -> SkCanvas* { return self.beginRecording(bounds, nullptr, 0); }), allow_raw_pointers()) .function("finishRecordingAsPicture", optional_override([](SkPictureRecorder& self) -> sk_sp { return self.finishRecordingAsPicture(0); }), allow_raw_pointers()); class_("SkPicture") .smart_ptr>("sk_sp") // The serialized format of an SkPicture (informally called an "skp"), is not something // that clients should ever rely on. It is useful when filing bug reports, but that's // about it. The format may change at anytime and no promises are made for backwards // or forward compatibility. .function("DEBUGONLY_serialize", optional_override([](SkPicture& self) -> sk_sp { // Emscripten doesn't play well with optional arguments, which we don't // want to expose anyway. return self.serialize(); }), allow_raw_pointers()); class_("SkShader") .smart_ptr>("sk_sp"); class_("SkSurface") .smart_ptr>("sk_sp") .function("_flush", select_overload(&SkSurface::flush)) .function("getCanvas", &SkSurface::getCanvas, allow_raw_pointers()) .function("height", &SkSurface::height) .function("makeImageSnapshot", select_overload()>(&SkSurface::makeImageSnapshot)) .function("makeImageSnapshot", select_overload(const SkIRect& bounds)>(&SkSurface::makeImageSnapshot)) .function("makeSurface", optional_override([](SkSurface& self, SimpleImageInfo sii)->sk_sp { return self.makeSurface(toSkImageInfo(sii)); }), allow_raw_pointers()) .function("width", &SkSurface::width); class_("SkTextBlob") .smart_ptr>("sk_sp>") .class_function("_MakeFromRSXform", optional_override([](uintptr_t /* char* */ sptr, size_t strBtyes, uintptr_t /* SkRSXform* */ xptr, const SkFont& font, SkTextEncoding encoding)->sk_sp { // See comment above for uintptr_t explanation const char* str = reinterpret_cast(sptr); const SkRSXform* xforms = reinterpret_cast(xptr); return SkTextBlob::MakeFromRSXform(str, strBtyes, xforms, font, encoding); }), allow_raw_pointers()) .class_function("_MakeFromText", optional_override([](uintptr_t /* char* */ sptr, size_t len, const SkFont& font, SkTextEncoding encoding)->sk_sp { // See comment above for uintptr_t explanation const char* str = reinterpret_cast(sptr); return SkTextBlob::MakeFromText(str, len, font, encoding); }), allow_raw_pointers()); class_("SkTypeface") .smart_ptr>("sk_sp"); class_("SkVertices") .smart_ptr>("sk_sp") .function("_applyBones", optional_override([](SkVertices& self, uintptr_t /* Bone* */ bptr, int boneCount)->sk_sp { // See comment above for uintptr_t explanation const Bone* bones = reinterpret_cast(bptr); return self.applyBones(bones, boneCount); })) .function("bounds", &SkVertices::bounds) .function("mode", &SkVertices::mode) .function("uniqueID", &SkVertices::uniqueID) #ifdef SK_DEBUG .function("dumpPositions", optional_override([](SkVertices& self)->void { auto pos = self.positions(); for(int i = 0; i< self.vertexCount(); i++) { SkDebugf("position[%d] = (%f, %f)\n", i, pos[i].x(), pos[i].y()); } })) #endif .function("vertexCount", &SkVertices::vertexCount); // Not intended to be called directly by clients class_("_SkVerticesBuilder") .constructor() .function("boneIndices", optional_override([](SkVertices::Builder& self)->uintptr_t /* BoneIndices* */{ // Emscripten won't let us return bare pointers, but we can return ints just fine. return reinterpret_cast(self.boneIndices()); })) .function("boneWeights", optional_override([](SkVertices::Builder& self)->uintptr_t /* BoneWeights* */{ // Emscripten won't let us return bare pointers, but we can return ints just fine. return reinterpret_cast(self.boneWeights()); })) .function("colors", optional_override([](SkVertices::Builder& self)->uintptr_t /* SkColor* */{ // Emscripten won't let us return bare pointers, but we can return ints just fine. return reinterpret_cast(self.colors()); })) .function("detach", &SkVertices::Builder::detach) .function("indices", optional_override([](SkVertices::Builder& self)->uintptr_t /* uint16_t* */{ // Emscripten won't let us return bare pointers, but we can return ints just fine. return reinterpret_cast(self.indices()); })) .function("positions", optional_override([](SkVertices::Builder& self)->uintptr_t /* SkPoint* */{ // Emscripten won't let us return bare pointers, but we can return ints just fine. return reinterpret_cast(self.positions()); })) .function("texCoords", optional_override([](SkVertices::Builder& self)->uintptr_t /* SkPoint* */{ // Emscripten won't let us return bare pointers, but we can return ints just fine. return reinterpret_cast(self.texCoords()); })); enum_("AlphaType") .value("Opaque", SkAlphaType::kOpaque_SkAlphaType) .value("Premul", SkAlphaType::kPremul_SkAlphaType) .value("Unpremul", SkAlphaType::kUnpremul_SkAlphaType); enum_("BlendMode") .value("Clear", SkBlendMode::kClear) .value("Src", SkBlendMode::kSrc) .value("Dst", SkBlendMode::kDst) .value("SrcOver", SkBlendMode::kSrcOver) .value("DstOver", SkBlendMode::kDstOver) .value("SrcIn", SkBlendMode::kSrcIn) .value("DstIn", SkBlendMode::kDstIn) .value("SrcOut", SkBlendMode::kSrcOut) .value("DstOut", SkBlendMode::kDstOut) .value("SrcATop", SkBlendMode::kSrcATop) .value("DstATop", SkBlendMode::kDstATop) .value("Xor", SkBlendMode::kXor) .value("Plus", SkBlendMode::kPlus) .value("Modulate", SkBlendMode::kModulate) .value("Screen", SkBlendMode::kScreen) .value("Overlay", SkBlendMode::kOverlay) .value("Darken", SkBlendMode::kDarken) .value("Lighten", SkBlendMode::kLighten) .value("ColorDodge", SkBlendMode::kColorDodge) .value("ColorBurn", SkBlendMode::kColorBurn) .value("HardLight", SkBlendMode::kHardLight) .value("SoftLight", SkBlendMode::kSoftLight) .value("Difference", SkBlendMode::kDifference) .value("Exclusion", SkBlendMode::kExclusion) .value("Multiply", SkBlendMode::kMultiply) .value("Hue", SkBlendMode::kHue) .value("Saturation", SkBlendMode::kSaturation) .value("Color", SkBlendMode::kColor) .value("Luminosity", SkBlendMode::kLuminosity); enum_("BlurStyle") .value("Normal", SkBlurStyle::kNormal_SkBlurStyle) .value("Solid", SkBlurStyle::kSolid_SkBlurStyle) .value("Outer", SkBlurStyle::kOuter_SkBlurStyle) .value("Inner", SkBlurStyle::kInner_SkBlurStyle); enum_("ClipOp") .value("Difference", SkClipOp::kDifference) .value("Intersect", SkClipOp::kIntersect); enum_("ColorType") .value("Alpha_8", SkColorType::kAlpha_8_SkColorType) .value("RGB_565", SkColorType::kRGB_565_SkColorType) .value("ARGB_4444", SkColorType::kARGB_4444_SkColorType) .value("RGBA_8888", SkColorType::kRGBA_8888_SkColorType) .value("RGB_888x", SkColorType::kRGB_888x_SkColorType) .value("BGRA_8888", SkColorType::kBGRA_8888_SkColorType) .value("RGBA_1010102", SkColorType::kRGBA_1010102_SkColorType) .value("RGB_101010x", SkColorType::kRGB_101010x_SkColorType) .value("Gray_8", SkColorType::kGray_8_SkColorType) .value("RGBA_F16", SkColorType::kRGBA_F16_SkColorType) .value("RGBA_F32", SkColorType::kRGBA_F32_SkColorType); enum_("FillType") .value("Winding", SkPath::FillType::kWinding_FillType) .value("EvenOdd", SkPath::FillType::kEvenOdd_FillType) .value("InverseWinding", SkPath::FillType::kInverseWinding_FillType) .value("InverseEvenOdd", SkPath::FillType::kInverseEvenOdd_FillType); enum_("FilterQuality") .value("None", SkFilterQuality::kNone_SkFilterQuality) .value("Low", SkFilterQuality::kLow_SkFilterQuality) .value("Medium", SkFilterQuality::kMedium_SkFilterQuality) .value("High", SkFilterQuality::kHigh_SkFilterQuality); enum_("ImageFormat") .value("PNG", SkEncodedImageFormat::kPNG) .value("JPEG", SkEncodedImageFormat::kJPEG); enum_("PaintStyle") .value("Fill", SkPaint::Style::kFill_Style) .value("Stroke", SkPaint::Style::kStroke_Style) .value("StrokeAndFill", SkPaint::Style::kStrokeAndFill_Style); enum_("PathOp") .value("Difference", SkPathOp::kDifference_SkPathOp) .value("Intersect", SkPathOp::kIntersect_SkPathOp) .value("Union", SkPathOp::kUnion_SkPathOp) .value("XOR", SkPathOp::kXOR_SkPathOp) .value("ReverseDifference", SkPathOp::kReverseDifference_SkPathOp); enum_("StrokeCap") .value("Butt", SkPaint::Cap::kButt_Cap) .value("Round", SkPaint::Cap::kRound_Cap) .value("Square", SkPaint::Cap::kSquare_Cap); enum_("StrokeJoin") .value("Miter", SkPaint::Join::kMiter_Join) .value("Round", SkPaint::Join::kRound_Join) .value("Bevel", SkPaint::Join::kBevel_Join); enum_("TextEncoding") .value("UTF8", SkTextEncoding::kUTF8) .value("UTF16", SkTextEncoding::kUTF16) .value("UTF32", SkTextEncoding::kUTF32) .value("GlyphID", SkTextEncoding::kGlyphID); enum_("TileMode") .value("Clamp", SkTileMode::kClamp) .value("Repeat", SkTileMode::kRepeat) .value("Mirror", SkTileMode::kMirror) .value("Decal", SkTileMode::kDecal); enum_("VertexMode") .value("Triangles", SkVertices::VertexMode::kTriangles_VertexMode) .value("TrianglesStrip", SkVertices::VertexMode::kTriangleStrip_VertexMode) .value("TriangleFan", SkVertices::VertexMode::kTriangleFan_VertexMode); // A value object is much simpler than a class - it is returned as a JS // object and does not require delete(). // https://kripken.github.io/emscripten-site/docs/porting/connecting_cpp_and_javascript/embind.html#value-types value_object("ShapedTextOpts") .field("font", &ShapedTextOpts::font) .field("leftToRight", &ShapedTextOpts::leftToRight) .field("text", &ShapedTextOpts::text) .field("width", &ShapedTextOpts::width); value_object("SkRect") .field("fLeft", &SkRect::fLeft) .field("fTop", &SkRect::fTop) .field("fRight", &SkRect::fRight) .field("fBottom", &SkRect::fBottom); value_object("SkIRect") .field("fLeft", &SkIRect::fLeft) .field("fTop", &SkIRect::fTop) .field("fRight", &SkIRect::fRight) .field("fBottom", &SkIRect::fBottom); value_object("SkImageInfo") .field("width", &SimpleImageInfo::width) .field("height", &SimpleImageInfo::height) .field("colorType", &SimpleImageInfo::colorType) .field("alphaType", &SimpleImageInfo::alphaType); // SkPoints can be represented by [x, y] value_array("SkPoint") .element(&SkPoint::fX) .element(&SkPoint::fY); // SkPoint3s can be represented by [x, y, z] value_array("SkPoint3") .element(&SkPoint3::fX) .element(&SkPoint3::fY) .element(&SkPoint3::fZ); // PosTan can be represented by [px, py, tx, ty] value_array("PosTan") .element(&PosTan::px) .element(&PosTan::py) .element(&PosTan::tx) .element(&PosTan::ty); // {"w": Number, "h", Number} value_object("SkSize") .field("w", &SkSize::fWidth) .field("h", &SkSize::fHeight); value_object("SkISize") .field("w", &SkISize::fWidth) .field("h", &SkISize::fHeight); value_object("StrokeOpts") .field("width", &StrokeOpts::width) .field("miter_limit", &StrokeOpts::miter_limit) .field("join", &StrokeOpts::join) .field("cap", &StrokeOpts::cap) .field("precision", &StrokeOpts::precision); // Allows clients to supply a 1D array of 9 elements and the bindings // will automatically turn it into a 3x3 2D matrix. // e.g. path.transform([0,1,2,3,4,5,6,7,8]) // This is likely simpler for the client than exposing SkMatrix // directly and requiring them to do a lot of .delete(). value_array("SkMatrix") .element(&SimpleMatrix::scaleX) .element(&SimpleMatrix::skewX) .element(&SimpleMatrix::transX) .element(&SimpleMatrix::skewY) .element(&SimpleMatrix::scaleY) .element(&SimpleMatrix::transY) .element(&SimpleMatrix::pers0) .element(&SimpleMatrix::pers1) .element(&SimpleMatrix::pers2); constant("TRANSPARENT", SK_ColorTRANSPARENT); constant("RED", SK_ColorRED); constant("BLUE", SK_ColorBLUE); constant("YELLOW", SK_ColorYELLOW); constant("CYAN", SK_ColorCYAN); constant("BLACK", SK_ColorBLACK); constant("WHITE", SK_ColorWHITE); // TODO(?) constant("MOVE_VERB", MOVE); constant("LINE_VERB", LINE); constant("QUAD_VERB", QUAD); constant("CONIC_VERB", CONIC); constant("CUBIC_VERB", CUBIC); constant("CLOSE_VERB", CLOSE); }