| /* |
| * Copyright 2018 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #if SK_SUPPORT_GPU |
| #include "GrBackendSurface.h" |
| #include "GrContext.h" |
| #include "GrGLInterface.h" |
| #include "GrGLTypes.h" |
| #endif |
| |
| #include "SkBlendMode.h" |
| #include "SkCanvas.h" |
| #include "SkColor.h" |
| #include "SkCornerPathEffect.h" |
| #include "SkDashPathEffect.h" |
| #include "SkDashPathEffect.h" |
| #include "SkData.h" |
| #include "SkDiscretePathEffect.h" |
| #include "SkEncodedImageFormat.h" |
| #include "SkFontMgr.h" |
| #include "SkBlurTypes.h" |
| #include "SkFontMgrPriv.h" |
| #include "SkGradientShader.h" |
| #include "SkImageShader.h" |
| #include "SkMaskFilter.h" |
| #include "SkPaint.h" |
| #include "SkParsePath.h" |
| #include "SkPath.h" |
| #include "SkPathEffect.h" |
| #include "SkPathOps.h" |
| #include "SkScalar.h" |
| #include "SkShader.h" |
| #include "SkShadowUtils.h" |
| #include "SkString.h" |
| #include "SkStrokeRec.h" |
| #include "SkSurface.h" |
| #include "SkSurfaceProps.h" |
| #include "SkTestFontMgr.h" |
| #include "SkTrimPathEffect.h" |
| #include "SkVertices.h" |
| |
| #if SK_INCLUDE_SKOTTIE |
| #include "Skottie.h" |
| #endif |
| #if SK_INCLUDE_NIMA |
| #include "nima/NimaActor.h" |
| #endif |
| |
| #include <iostream> |
| #include <string> |
| |
| #include <emscripten.h> |
| #include <emscripten/bind.h> |
| #if SK_SUPPORT_GPU |
| #include <GL/gl.h> |
| #include <emscripten/html5.h> |
| #endif |
| |
| using namespace emscripten; |
| |
| // Self-documenting types |
| using JSArray = emscripten::val; |
| using JSColor = int32_t; |
| using JSString = emscripten::val; |
| using SkPathOrNull = emscripten::val; |
| using Uint8Array = emscripten::val; |
| |
| // Aliases for less typing |
| using BoneIndices = SkVertices::BoneIndices; |
| using BoneWeights = SkVertices::BoneWeights; |
| using Bone = SkVertices::Bone; |
| |
| void EMSCRIPTEN_KEEPALIVE initFonts() { |
| gSkFontMgr_DefaultFactory = &sk_tool_utils::MakePortableFontMgr; |
| } |
| |
| #if SK_SUPPORT_GPU |
| // Wraps the WebGL context in an SkSurface and returns it. |
| // This function based on the work of |
| // https://github.com/Zubnix/skia-wasm-port/, used under the terms of the MIT license. |
| sk_sp<SkSurface> getWebGLSurface(std::string id, int width, int height) { |
| // Context configurations |
| EmscriptenWebGLContextAttributes attrs; |
| emscripten_webgl_init_context_attributes(&attrs); |
| attrs.alpha = true; |
| attrs.premultipliedAlpha = true; |
| attrs.majorVersion = 1; |
| attrs.enableExtensionsByDefault = true; |
| |
| EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context = emscripten_webgl_create_context(id.c_str(), &attrs); |
| if (context < 0) { |
| printf("failed to create webgl context %d\n", context); |
| return nullptr; |
| } |
| EMSCRIPTEN_RESULT r = emscripten_webgl_make_context_current(context); |
| if (r < 0) { |
| printf("failed to make webgl current %d\n", r); |
| return nullptr; |
| } |
| |
| glClearColor(0, 0, 0, 0); |
| glClearStencil(0); |
| glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); |
| |
| // setup GrContext |
| auto interface = GrGLMakeNativeInterface(); |
| |
| // setup contexts |
| sk_sp<GrContext> grContext(GrContext::MakeGL(interface)); |
| |
| // 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<SkSurface> surface(SkSurface::MakeFromBackendRenderTarget(grContext.get(), target, |
| kBottomLeft_GrSurfaceOrigin, |
| colorType, nullptr, nullptr)); |
| return surface; |
| } |
| #endif |
| |
| 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); |
| } |
| |
| //======================================================================================== |
| // 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::kCW_Direction : |
| SkPath::Direction::kCCW_Direction); |
| } |
| |
| void ApplyArcTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2, |
| SkScalar radius) { |
| p.arcTo(x1, y1, x2, y2, radius); |
| } |
| |
| 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 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 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; |
| } |
| |
| //======================================================================================== |
| // 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; |
| }; |
| |
| 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); |
| } |
| |
| // to map from raw memory to a uint8array |
| Uint8Array getSkDataBytes(const SkData *data) { |
| return Uint8Array(typed_memory_view(data->size(), data->bytes())); |
| } |
| |
| // 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<typename ClassType> |
| void raw_destructor(ClassType *); |
| |
| template<> |
| void raw_destructor<SkData>(SkData *ptr) { |
| } |
| |
| template<> |
| void raw_destructor<SkVertices>(SkVertices *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) { |
| function("initFonts", &initFonts); |
| #if SK_SUPPORT_GPU |
| function("_getWebGLSurface", &getWebGLSurface, allow_raw_pointers()); |
| function("currentContext", &emscripten_webgl_get_current_context); |
| function("setCurrentContext", &emscripten_webgl_make_context_current); |
| constant("gpu", true); |
| #endif |
| function("_getRasterN32PremulSurface", optional_override([](int width, int height)->sk_sp<SkSurface> { |
| 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<SkMaskFilter> { |
| // Adds a little helper because emscripten doesn't expose default params. |
| return SkMaskFilter::MakeBlur(style, sigma, respectCTM); |
| }), allow_raw_pointers()); |
| function("MakePathFromOp", &MakePathFromOp); |
| |
| // 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<SkPathEffect> { |
| // See comment above for uintptr_t explanation |
| const float* intervals = reinterpret_cast<const float*>(cptr); |
| return SkDashPathEffect::Make(intervals, count, phase); |
| }), allow_raw_pointers()); |
| function("_MakeImageShader", optional_override([](uintptr_t /* uint8_t* */ iPtr, int ilen, |
| SkShader::TileMode tx, SkShader::TileMode ty)->sk_sp<SkShader> { |
| // See comment above for uintptr_t explanation |
| const uint8_t* imgBytes = reinterpret_cast<const uint8_t*>(iPtr); |
| |
| auto imgData = SkData::MakeFromMalloc(imgBytes, ilen); |
| auto img = SkImage::MakeFromEncoded(imgData); |
| if (!img) { |
| SkDebugf("Could not decode image\n"); |
| return nullptr; |
| } |
| |
| return SkImageShader::Make(img, tx, ty, nullptr); |
| }), allow_raw_pointers()); |
| function("_MakeLinearGradientShader", optional_override([](SkPoint start, SkPoint end, |
| uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr, |
| int count, SkShader::TileMode mode, uint32_t flags)->sk_sp<SkShader> { |
| SkPoint points[] = { start, end }; |
| // See comment above for uintptr_t explanation |
| const SkColor* colors = reinterpret_cast<const SkColor*> (cPtr); |
| const SkScalar* positions = reinterpret_cast<const SkScalar*>(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, SkShader::TileMode mode, uint32_t flags, |
| const SimpleMatrix& lm)->sk_sp<SkShader> { |
| SkPoint points[] = { start, end }; |
| // See comment above for uintptr_t explanation |
| const SkColor* colors = reinterpret_cast<const SkColor*> (cPtr); |
| const SkScalar* positions = reinterpret_cast<const SkScalar*>(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, SkShader::TileMode mode, uint32_t flags)->sk_sp<SkShader> { |
| // See comment above for uintptr_t explanation |
| const SkColor* colors = reinterpret_cast<const SkColor*> (cPtr); |
| const SkScalar* positions = reinterpret_cast<const SkScalar*>(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, SkShader::TileMode mode, uint32_t flags, |
| const SimpleMatrix& lm)->sk_sp<SkShader> { |
| // See comment above for uintptr_t explanation |
| const SkColor* colors = reinterpret_cast<const SkColor*> (cPtr); |
| const SkScalar* positions = reinterpret_cast<const SkScalar*>(pPtr); |
| |
| SkMatrix localMatrix = toSkMatrix(lm); |
| return SkGradientShader::MakeRadial(center, radius, colors, positions, count, |
| mode, flags, &localMatrix); |
| }), allow_raw_pointers()); |
| function("_MakeSkVertices", optional_override([](SkVertices::VertexMode mode, int vertexCount, |
| uintptr_t /* SkPoint* */ pPtr, uintptr_t /* SkPoint* */ tPtr, |
| uintptr_t /* SkColor* */ cPtr, |
| uintptr_t /* BoneIndices* */ biPtr, uintptr_t /* BoneWeights* */ bwPtr, |
| int indexCount, uintptr_t /* uint16_t * */ iPtr)->sk_sp<SkVertices> { |
| // See comment above for uintptr_t explanation |
| const SkPoint* positions = reinterpret_cast<const SkPoint*>(pPtr); |
| const SkPoint* texs = reinterpret_cast<const SkPoint*>(tPtr); |
| const SkColor* colors = reinterpret_cast<const SkColor*>(cPtr); |
| const BoneIndices* boneIndices = reinterpret_cast<const BoneIndices*>(biPtr); |
| const BoneWeights* boneWeights = reinterpret_cast<const BoneWeights*>(bwPtr); |
| const uint16_t* indices = reinterpret_cast<const uint16_t*>(iPtr); |
| |
| return SkVertices::MakeCopy(mode, vertexCount, positions, texs, colors, |
| boneIndices, boneWeights, indexCount, indices); |
| }), allow_raw_pointers()); |
| |
| class_<SkCanvas>("SkCanvas") |
| .constructor<>() |
| .function("clear", optional_override([](SkCanvas& self, JSColor color)->void { |
| // JS side gives us a signed int instead of an unsigned int for color |
| // Add a optional_override to change it out. |
| self.clear(SkColor(color)); |
| })) |
| .function("drawPaint", &SkCanvas::drawPaint) |
| .function("drawPath", &SkCanvas::drawPath) |
| .function("drawRect", &SkCanvas::drawRect) |
| .function("drawShadow", optional_override([](SkCanvas& self, const SkPath& path, |
| const SkPoint3& zPlaneParams, |
| const SkPoint3& lightPos, SkScalar lightRadius, |
| JSColor ambientColor, JSColor spotColor, |
| uint32_t flags) { |
| SkShadowUtils::DrawShadow(&self, path, zPlaneParams, lightPos, lightRadius, |
| SkColor(ambientColor), SkColor(spotColor), flags); |
| })) |
| .function("drawText", optional_override([](SkCanvas& self, std::string text, SkScalar x, |
| SkScalar y, const SkPaint& p) { |
| // 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. |
| self.drawText(text.c_str(), text.length(), x, y, p); |
| })) |
| .function("drawVertices", select_overload<void (const sk_sp<SkVertices>&, SkBlendMode, const SkPaint&)>(&SkCanvas::drawVertices)) |
| .function("flush", &SkCanvas::flush) |
| .function("rotate", select_overload<void (SkScalar, SkScalar, SkScalar)>(&SkCanvas::rotate)) |
| .function("save", &SkCanvas::save) |
| .function("scale", &SkCanvas::scale) |
| .function("setMatrix", optional_override([](SkCanvas& self, const SimpleMatrix& m) { |
| self.setMatrix(toSkMatrix(m)); |
| })) |
| .function("skew", &SkCanvas::skew) |
| .function("translate", &SkCanvas::translate); |
| |
| class_<SkData>("SkData") |
| .smart_ptr<sk_sp<SkData>>("sk_sp<SkData>>") |
| .function("size", &SkData::size); |
| |
| class_<SkImage>("SkImage") |
| .smart_ptr<sk_sp<SkImage>>("sk_sp<SkImage>") |
| .function("_encodeToData", select_overload<sk_sp<SkData>()const>(&SkImage::encodeToData)) |
| .function("_encodeToDataWithFormat", select_overload<sk_sp<SkData>(SkEncodedImageFormat encodedImageFormat, int quality)const>(&SkImage::encodeToData)); |
| |
| class_<SkMaskFilter>("SkMaskFilter") |
| .smart_ptr<sk_sp<SkMaskFilter>>("sk_sp<SkMaskFilter>"); |
| |
| class_<SkPaint>("SkPaint") |
| .constructor<>() |
| .function("copy", optional_override([](const SkPaint& self)->SkPaint { |
| SkPaint p(self); |
| return p; |
| })) |
| .function("getColor", optional_override([](SkPaint& self)->JSColor { |
| // JS side gives us a signed int instead of an unsigned int for color |
| // Add a optional_override to change it out. |
| return JSColor(self.getColor()); |
| })) |
| .function("getStrokeWidth", &SkPaint::getStrokeWidth) |
| .function("getStrokeMiter", &SkPaint::getStrokeMiter) |
| .function("getStrokeCap", &SkPaint::getStrokeCap) |
| .function("getStrokeJoin", &SkPaint::getStrokeJoin) |
| .function("getTextSize", &SkPaint::getTextSize) |
| .function("measureText", optional_override([](SkPaint& 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()); |
| })) |
| .function("setAntiAlias", &SkPaint::setAntiAlias) |
| .function("setColor", optional_override([](SkPaint& self, JSColor color)->void { |
| // JS side gives us a signed int instead of an unsigned int for color |
| // Add a optional_override to change it out. |
| self.setColor(SkColor(color)); |
| })) |
| .function("setMaskFilter", &SkPaint::setMaskFilter) |
| .function("setPathEffect", &SkPaint::setPathEffect) |
| .function("setShader", &SkPaint::setShader) |
| .function("setStrokeWidth", &SkPaint::setStrokeWidth) |
| .function("setStrokeMiter", &SkPaint::setStrokeMiter) |
| .function("setStrokeCap", &SkPaint::setStrokeCap) |
| .function("setStrokeJoin", &SkPaint::setStrokeJoin) |
| .function("setStyle", &SkPaint::setStyle) |
| .function("setTextSize", &SkPaint::setTextSize); |
| |
| class_<SkPathEffect>("SkPathEffect") |
| .smart_ptr<sk_sp<SkPathEffect>>("sk_sp<SkPathEffect>"); |
| |
| class_<SkPath>("SkPath") |
| .constructor<>() |
| .constructor<const SkPath&>() |
| .function("_addArc", &ApplyAddArc) |
| // interface.js has 3 overloads of addPath |
| .function("_addPath", &ApplyAddPath) |
| // interface.js has 4 overloads of addRect |
| .function("_addRect", &ApplyAddRect) |
| .function("_arcTo", &ApplyArcTo) |
| .function("_close", &ApplyClose) |
| .function("_conicTo", &ApplyConicTo) |
| .function("countPoints", &SkPath::countPoints) |
| .function("_cubicTo", &ApplyCubicTo) |
| .function("getPoint", &SkPath::getPoint) |
| .function("_lineTo", &ApplyLineTo) |
| .function("_moveTo", &ApplyMoveTo) |
| .function("_quadTo", &ApplyQuadTo) |
| .function("_transform", select_overload<void(SkPath&, SkScalar, SkScalar, SkScalar, SkScalar, SkScalar, SkScalar, SkScalar, SkScalar, SkScalar)>(&ApplyTransform)) |
| |
| // PathEffects |
| .function("_dash", &ApplyDash) |
| .function("_trim", &ApplyTrim) |
| .function("_stroke", &ApplyStroke) |
| |
| // PathOps |
| .function("_simplify", &ApplySimplify) |
| .function("_op", &ApplyPathOp) |
| |
| // Exporting |
| .function("toSVGString", &ToSVGString) |
| |
| .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<void() const>(&SkPath::dump)) |
| .function("dumpHex", select_overload<void() const>(&SkPath::dumpHex)) |
| #endif |
| ; |
| |
| class_<SkShader>("SkShader") |
| .smart_ptr<sk_sp<SkShader>>("sk_sp<SkShader>"); |
| |
| class_<SkSurface>("SkSurface") |
| .smart_ptr<sk_sp<SkSurface>>("sk_sp<SkSurface>") |
| .function("width", &SkSurface::width) |
| .function("height", &SkSurface::height) |
| .function("_flush", &SkSurface::flush) |
| .function("makeImageSnapshot", select_overload<sk_sp<SkImage>()>(&SkSurface::makeImageSnapshot)) |
| .function("makeImageSnapshot", select_overload<sk_sp<SkImage>(const SkIRect& bounds)>(&SkSurface::makeImageSnapshot)) |
| .function("_readPixels", optional_override([](SkSurface& self, int width, int height, uintptr_t /* uint8_t* */ cptr)->bool { |
| uint8_t* dst = reinterpret_cast<uint8_t*>(cptr); |
| auto dstInfo = SkImageInfo::Make(width, height, kRGBA_8888_SkColorType, kUnpremul_SkAlphaType); |
| return self.readPixels(dstInfo, dst, width*4, 0, 0); |
| })) |
| .function("getCanvas", &SkSurface::getCanvas, allow_raw_pointers()); |
| |
| class_<SkVertices>("SkVertices") |
| .smart_ptr<sk_sp<SkVertices>>("sk_sp<SkVertices>") |
| .function("_applyBones", optional_override([](SkVertices& self, uintptr_t /* Bone* */ bptr, int boneCount)->sk_sp<SkVertices> { |
| // See comment above for uintptr_t explanation |
| const Bone* bones = reinterpret_cast<const Bone*>(bptr); |
| return self.applyBones(bones, boneCount); |
| })) |
| .function("bounds", &SkVertices::bounds) |
| .function("mode", &SkVertices::mode) |
| .function("uniqueID", &SkVertices::uniqueID) |
| .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()); |
| } |
| })) |
| .function("vertexCount", &SkVertices::vertexCount); |
| |
| |
| enum_<SkBlendMode>("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_<SkBlurStyle>("BlurStyle") |
| .value("Normal", SkBlurStyle::kNormal_SkBlurStyle) |
| .value("Solid", SkBlurStyle::kSolid_SkBlurStyle) |
| .value("Outer", SkBlurStyle::kOuter_SkBlurStyle) |
| .value("Inner", SkBlurStyle::kInner_SkBlurStyle); |
| |
| enum_<SkPath::FillType>("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_<SkEncodedImageFormat>("ImageFormat") |
| .value("PNG", SkEncodedImageFormat::kPNG) |
| .value("JPEG", SkEncodedImageFormat::kJPEG); |
| |
| enum_<SkPaint::Style>("PaintStyle") |
| .value("Fill", SkPaint::Style::kFill_Style) |
| .value("Stroke", SkPaint::Style::kStroke_Style) |
| .value("StrokeAndFill", SkPaint::Style::kStrokeAndFill_Style); |
| |
| enum_<SkPathOp>("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_<SkPaint::Cap>("StrokeCap") |
| .value("Butt", SkPaint::Cap::kButt_Cap) |
| .value("Round", SkPaint::Cap::kRound_Cap) |
| .value("Square", SkPaint::Cap::kSquare_Cap); |
| |
| enum_<SkPaint::Join>("StrokeJoin") |
| .value("Miter", SkPaint::Join::kMiter_Join) |
| .value("Round", SkPaint::Join::kRound_Join) |
| .value("Bevel", SkPaint::Join::kBevel_Join); |
| |
| value_object<StrokeOpts>("StrokeOpts") |
| .field("width", &StrokeOpts::width) |
| .field("miter_limit", &StrokeOpts::miter_limit) |
| .field("join", &StrokeOpts::join) |
| .field("cap", &StrokeOpts::cap); |
| |
| enum_<SkShader::TileMode>("TileMode") |
| .value("Clamp", SkShader::TileMode::kClamp_TileMode) |
| .value("Repeat", SkShader::TileMode::kRepeat_TileMode) |
| .value("Mirror", SkShader::TileMode::kMirror_TileMode); |
| |
| enum_<SkVertices::VertexMode>("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<SkRect>("SkRect") |
| .field("fLeft", &SkRect::fLeft) |
| .field("fTop", &SkRect::fTop) |
| .field("fRight", &SkRect::fRight) |
| .field("fBottom", &SkRect::fBottom); |
| |
| value_object<SkIRect>("SkIRect") |
| .field("fLeft", &SkIRect::fLeft) |
| .field("fTop", &SkIRect::fTop) |
| .field("fRight", &SkIRect::fRight) |
| .field("fBottom", &SkIRect::fBottom); |
| |
| // SkPoints can be represented by [x, y] |
| value_array<SkPoint>("SkPoint") |
| .element(&SkPoint::fX) |
| .element(&SkPoint::fY); |
| |
| // SkPoint3s can be represented by [x, y, z] |
| value_array<SkPoint3>("SkPoint3") |
| .element(&SkPoint3::fX) |
| .element(&SkPoint3::fY) |
| .element(&SkPoint3::fZ); |
| |
| // {"w": Number, "h", Number} |
| value_object<SkSize>("SkSize") |
| .field("w", &SkSize::fWidth) |
| .field("h", &SkSize::fHeight); |
| |
| value_object<SkISize>("SkISize") |
| .field("w", &SkISize::fWidth) |
| .field("h", &SkISize::fHeight); |
| |
| // 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<SimpleMatrix>("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", (JSColor) SK_ColorTRANSPARENT); |
| constant("RED", (JSColor) SK_ColorRED); |
| constant("BLUE", (JSColor) SK_ColorBLUE); |
| constant("YELLOW", (JSColor) SK_ColorYELLOW); |
| constant("CYAN", (JSColor) SK_ColorCYAN); |
| constant("BLACK", (JSColor) SK_ColorBLACK); |
| // TODO(?) |
| |
| #if SK_INCLUDE_SKOTTIE |
| // Animation things (may eventually go in own library) |
| class_<skottie::Animation>("Animation") |
| .smart_ptr<sk_sp<skottie::Animation>>("sk_sp<Animation>") |
| .function("version", optional_override([](skottie::Animation& self)->std::string { |
| return std::string(self.version().c_str()); |
| })) |
| .function("size", &skottie::Animation::size) |
| .function("duration", &skottie::Animation::duration) |
| .function("seek", &skottie::Animation::seek) |
| .function("render", optional_override([](skottie::Animation& self, SkCanvas* canvas)->void { |
| self.render(canvas, nullptr); |
| }), allow_raw_pointers()) |
| .function("render", optional_override([](skottie::Animation& self, SkCanvas* canvas, const SkRect r)->void { |
| self.render(canvas, &r); |
| }), allow_raw_pointers()); |
| |
| function("MakeAnimation", optional_override([](std::string json)->sk_sp<skottie::Animation> { |
| return skottie::Animation::Make(json.c_str(), json.length()); |
| })); |
| constant("skottie", true); |
| #endif |
| |
| #if SK_INCLUDE_NIMA |
| class_<NimaActor>("NimaActor") |
| .function("duration", &NimaActor::duration) |
| .function("getAnimationNames", optional_override([](NimaActor& self)->JSArray { |
| JSArray names = emscripten::val::array(); |
| auto vNames = self.getAnimationNames(); |
| for (size_t i = 0; i < vNames.size(); i++) { |
| names.call<void>("push", vNames[i]); |
| } |
| return names; |
| }), allow_raw_pointers()) |
| .function("render", optional_override([](NimaActor& self, SkCanvas* canvas)->void { |
| self.render(canvas, 0); |
| }), allow_raw_pointers()) |
| .function("seek", &NimaActor::seek) |
| .function("setAnimationByIndex", select_overload<void(uint8_t )>(&NimaActor::setAnimation)) |
| .function("setAnimationByName" , select_overload<void(std::string)>(&NimaActor::setAnimation)); |
| |
| function("_MakeNimaActor", optional_override([](uintptr_t /* uint8_t* */ nptr, int nlen, |
| uintptr_t /* uint8_t* */ tptr, int tlen)->NimaActor* { |
| // See comment above for uintptr_t explanation |
| const uint8_t* nimaBytes = reinterpret_cast<const uint8_t*>(nptr); |
| const uint8_t* textureBytes = reinterpret_cast<const uint8_t*>(tptr); |
| |
| auto nima = SkData::MakeFromMalloc(nimaBytes, nlen); |
| auto texture = SkData::MakeFromMalloc(textureBytes, tlen); |
| return new NimaActor(nima, texture); |
| }), allow_raw_pointers()); |
| constant("nima", true); |
| #endif |
| } |
