7a1b845f2f
Now that drawVertices is exposed, no need to keep this around as a demo Docs-Preview: https://skia.org/?cl=173994 Bug: skia: Change-Id: I6293c8e2038ece27635d254db097e651c9d77a94 Reviewed-on: https://skia-review.googlesource.com/c/173994 Reviewed-by: Kevin Lubick <kjlubick@google.com>
989 lines
42 KiB
C++
989 lines
42 KiB
C++
/*
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* Copyright 2018 Google LLC
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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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#if SK_SUPPORT_GPU
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#include "GrBackendSurface.h"
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#include "GrContext.h"
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#include "GrGLInterface.h"
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#include "GrGLTypes.h"
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#endif
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#include "SkBlendMode.h"
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#include "SkBlurTypes.h"
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#include "SkCanvas.h"
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#include "SkColor.h"
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#include "SkCornerPathEffect.h"
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#include "SkDashPathEffect.h"
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#include "SkData.h"
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#include "SkDiscretePathEffect.h"
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#include "SkEncodedImageFormat.h"
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#include "SkFilterQuality.h"
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#include "SkFontMgr.h"
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#include "SkFontMgrPriv.h"
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#include "SkGradientShader.h"
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#include "SkImage.h"
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#include "SkImageInfo.h"
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#include "SkImageShader.h"
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#include "SkMakeUnique.h"
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#include "SkMaskFilter.h"
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#include "SkPaint.h"
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#include "SkParsePath.h"
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#include "SkPath.h"
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#include "SkPathEffect.h"
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#include "SkPathOps.h"
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#include "SkScalar.h"
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#include "SkShader.h"
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#include "SkShadowUtils.h"
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#include "SkString.h"
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#include "SkStrokeRec.h"
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#include "SkSurface.h"
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#include "SkSurfaceProps.h"
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#include "SkTestFontMgr.h"
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#include "SkTrimPathEffect.h"
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#include "SkVertices.h"
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#if SK_INCLUDE_SKOTTIE
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#include "Skottie.h"
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#if SK_INCLUDE_MANAGED_SKOTTIE
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#include "SkottieProperty.h"
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#include "SkottieUtils.h"
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#endif // SK_INCLUDE_MANAGED_SKOTTIE
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#endif // SK_INCLUDE_SKOTTIE
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#include <iostream>
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#include <string>
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#include <emscripten.h>
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#include <emscripten/bind.h>
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#if SK_SUPPORT_GPU
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#include <GL/gl.h>
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#include <emscripten/html5.h>
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#endif
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using namespace emscripten;
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// Self-documenting types
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using JSArray = emscripten::val;
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using JSColor = int32_t;
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using JSObject = emscripten::val;
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using JSString = emscripten::val;
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using SkPathOrNull = emscripten::val;
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using Uint8Array = emscripten::val;
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// Aliases for less typing
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using BoneIndices = SkVertices::BoneIndices;
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using BoneWeights = SkVertices::BoneWeights;
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using Bone = SkVertices::Bone;
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void EMSCRIPTEN_KEEPALIVE initFonts() {
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gSkFontMgr_DefaultFactory = &sk_tool_utils::MakePortableFontMgr;
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}
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#if SK_SUPPORT_GPU
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// Wraps the WebGL context in an SkSurface and returns it.
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// This function based on the work of
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// https://github.com/Zubnix/skia-wasm-port/, used under the terms of the MIT license.
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sk_sp<SkSurface> getWebGLSurface(std::string id, int width, int height) {
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// Context configurations
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EmscriptenWebGLContextAttributes attrs;
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emscripten_webgl_init_context_attributes(&attrs);
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attrs.alpha = true;
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attrs.premultipliedAlpha = true;
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attrs.majorVersion = 1;
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attrs.enableExtensionsByDefault = true;
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EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context = emscripten_webgl_create_context(id.c_str(), &attrs);
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if (context < 0) {
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printf("failed to create webgl context %d\n", context);
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return nullptr;
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}
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EMSCRIPTEN_RESULT r = emscripten_webgl_make_context_current(context);
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if (r < 0) {
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printf("failed to make webgl current %d\n", r);
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return nullptr;
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}
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glClearColor(0, 0, 0, 0);
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glClearStencil(0);
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glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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// setup GrContext
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auto interface = GrGLMakeNativeInterface();
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// setup contexts
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sk_sp<GrContext> grContext(GrContext::MakeGL(interface));
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// Wrap the frame buffer object attached to the screen in a Skia render target so Skia can
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// render to it
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GrGLint buffer;
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &buffer);
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GrGLFramebufferInfo info;
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info.fFBOID = (GrGLuint) buffer;
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SkColorType colorType;
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info.fFormat = GL_RGBA8;
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colorType = kRGBA_8888_SkColorType;
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GrBackendRenderTarget target(width, height, 0, 8, info);
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sk_sp<SkSurface> surface(SkSurface::MakeFromBackendRenderTarget(grContext.get(), target,
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kBottomLeft_GrSurfaceOrigin,
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colorType, nullptr, nullptr));
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return surface;
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}
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#endif
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struct SimpleMatrix {
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SkScalar scaleX, skewX, transX;
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SkScalar skewY, scaleY, transY;
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SkScalar pers0, pers1, pers2;
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};
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SkMatrix toSkMatrix(const SimpleMatrix& sm) {
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return SkMatrix::MakeAll(sm.scaleX, sm.skewX , sm.transX,
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sm.skewY , sm.scaleY, sm.transY,
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sm.pers0 , sm.pers1 , sm.pers2);
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}
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struct SimpleImageInfo {
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int width;
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int height;
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SkColorType colorType;
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SkAlphaType alphaType;
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// TODO color spaces?
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};
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SkImageInfo toSkImageInfo(const SimpleImageInfo& sii) {
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return SkImageInfo::Make(sii.width, sii.height, sii.colorType, sii.alphaType);
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}
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#if SK_INCLUDE_SKOTTIE && SK_INCLUDE_MANAGED_SKOTTIE
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namespace {
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class ManagedAnimation final : public SkRefCnt {
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public:
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static sk_sp<ManagedAnimation> Make(const std::string& json) {
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auto mgr = skstd::make_unique<skottie_utils::CustomPropertyManager>();
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auto animation = skottie::Animation::Builder()
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.setPropertyObserver(mgr->getPropertyObserver())
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.make(json.c_str(), json.size());
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return animation
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? sk_sp<ManagedAnimation>(new ManagedAnimation(std::move(animation), std::move(mgr)))
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: nullptr;
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}
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// skottie::Animation API
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void render(SkCanvas* canvas) const { fAnimation->render(canvas, nullptr); }
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void render(SkCanvas* canvas, const SkRect& dst) const { fAnimation->render(canvas, &dst); }
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void seek(SkScalar t) { fAnimation->seek(t); }
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SkScalar duration() const { return fAnimation->duration(); }
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const SkSize& size() const { return fAnimation->size(); }
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std::string version() const { return std::string(fAnimation->version().c_str()); }
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// CustomPropertyManager API
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JSArray getColorProps() const {
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JSArray props = emscripten::val::array();
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for (const auto& cp : fPropMgr->getColorProps()) {
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JSObject prop = emscripten::val::object();
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prop.set("key", cp);
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prop.set("value", fPropMgr->getColor(cp));
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props.call<void>("push", prop);
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}
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return props;
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}
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JSArray getOpacityProps() const {
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JSArray props = emscripten::val::array();
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for (const auto& op : fPropMgr->getOpacityProps()) {
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JSObject prop = emscripten::val::object();
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prop.set("key", op);
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prop.set("value", fPropMgr->getOpacity(op));
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props.call<void>("push", prop);
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}
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return props;
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}
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bool setColor(const std::string& key, JSColor c) {
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return fPropMgr->setColor(key, static_cast<SkColor>(c));
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}
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bool setOpacity(const std::string& key, float o) {
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return fPropMgr->setOpacity(key, o);
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}
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private:
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ManagedAnimation(sk_sp<skottie::Animation> animation,
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std::unique_ptr<skottie_utils::CustomPropertyManager> propMgr)
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: fAnimation(std::move(animation))
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, fPropMgr(std::move(propMgr)) {}
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sk_sp<skottie::Animation> fAnimation;
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std::unique_ptr<skottie_utils::CustomPropertyManager> fPropMgr;
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};
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} // anonymous ns
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#endif // SK_INCLUDE_SKOTTIE
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//========================================================================================
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// Path things
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//========================================================================================
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// All these Apply* methods are simple wrappers to avoid returning an object.
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// The default WASM bindings produce code that will leak if a return value
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// isn't assigned to a JS variable and has delete() called on it.
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// These Apply methods, combined with the smarter binding code allow for chainable
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// commands that don't leak if the return value is ignored (i.e. when used intuitively).
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void ApplyAddArc(SkPath& orig, const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle) {
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orig.addArc(oval, startAngle, sweepAngle);
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}
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void ApplyAddPath(SkPath& orig, const SkPath& newPath,
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SkScalar scaleX, SkScalar skewX, SkScalar transX,
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SkScalar skewY, SkScalar scaleY, SkScalar transY,
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SkScalar pers0, SkScalar pers1, SkScalar pers2,
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bool extendPath) {
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SkMatrix m = SkMatrix::MakeAll(scaleX, skewX , transX,
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skewY , scaleY, transY,
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pers0 , pers1 , pers2);
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orig.addPath(newPath, m, extendPath ? SkPath::kExtend_AddPathMode :
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SkPath::kAppend_AddPathMode);
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}
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void ApplyAddRect(SkPath& path, SkScalar left, SkScalar top,
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SkScalar right, SkScalar bottom, bool ccw) {
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path.addRect(left, top, right, bottom,
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ccw ? SkPath::Direction::kCW_Direction :
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SkPath::Direction::kCCW_Direction);
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}
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void ApplyArcTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2,
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SkScalar radius) {
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p.arcTo(x1, y1, x2, y2, radius);
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}
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void ApplyClose(SkPath& p) {
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p.close();
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}
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void ApplyConicTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2,
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SkScalar w) {
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p.conicTo(x1, y1, x2, y2, w);
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}
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void ApplyCubicTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2,
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SkScalar x3, SkScalar y3) {
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p.cubicTo(x1, y1, x2, y2, x3, y3);
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}
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void ApplyLineTo(SkPath& p, SkScalar x, SkScalar y) {
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p.lineTo(x, y);
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}
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void ApplyMoveTo(SkPath& p, SkScalar x, SkScalar y) {
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p.moveTo(x, y);
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}
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void ApplyQuadTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2) {
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p.quadTo(x1, y1, x2, y2);
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}
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void ApplyTransform(SkPath& orig,
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SkScalar scaleX, SkScalar skewX, SkScalar transX,
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SkScalar skewY, SkScalar scaleY, SkScalar transY,
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SkScalar pers0, SkScalar pers1, SkScalar pers2) {
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SkMatrix m = SkMatrix::MakeAll(scaleX, skewX , transX,
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skewY , scaleY, transY,
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pers0 , pers1 , pers2);
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orig.transform(m);
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}
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bool EMSCRIPTEN_KEEPALIVE ApplySimplify(SkPath& path) {
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return Simplify(path, &path);
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}
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bool EMSCRIPTEN_KEEPALIVE ApplyPathOp(SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) {
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return Op(pathOne, pathTwo, op, &pathOne);
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}
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JSString EMSCRIPTEN_KEEPALIVE ToSVGString(const SkPath& path) {
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SkString s;
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SkParsePath::ToSVGString(path, &s);
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return emscripten::val(s.c_str());
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}
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SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromOp(const SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) {
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SkPath out;
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if (Op(pathOne, pathTwo, op, &out)) {
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return emscripten::val(out);
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}
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return emscripten::val::null();
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}
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SkPath EMSCRIPTEN_KEEPALIVE CopyPath(const SkPath& a) {
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SkPath copy(a);
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return copy;
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}
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bool EMSCRIPTEN_KEEPALIVE Equals(const SkPath& a, const SkPath& b) {
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return a == b;
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}
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//========================================================================================
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// Path Effects
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//========================================================================================
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bool ApplyDash(SkPath& path, SkScalar on, SkScalar off, SkScalar phase) {
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SkScalar intervals[] = { on, off };
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auto pe = SkDashPathEffect::Make(intervals, 2, phase);
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if (!pe) {
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SkDebugf("Invalid args to dash()\n");
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return false;
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}
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SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
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if (pe->filterPath(&path, path, &rec, nullptr)) {
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return true;
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}
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SkDebugf("Could not make dashed path\n");
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return false;
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}
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bool ApplyTrim(SkPath& path, SkScalar startT, SkScalar stopT, bool isComplement) {
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auto mode = isComplement ? SkTrimPathEffect::Mode::kInverted : SkTrimPathEffect::Mode::kNormal;
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auto pe = SkTrimPathEffect::Make(startT, stopT, mode);
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if (!pe) {
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SkDebugf("Invalid args to trim(): startT and stopT must be in [0,1]\n");
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return false;
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}
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SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
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if (pe->filterPath(&path, path, &rec, nullptr)) {
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return true;
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}
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SkDebugf("Could not trim path\n");
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return false;
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}
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struct StrokeOpts {
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// Default values are set in interface.js which allows clients
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// to set any number of them. Otherwise, the binding code complains if
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// any are omitted.
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SkScalar width;
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SkScalar miter_limit;
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SkPaint::Join join;
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SkPaint::Cap cap;
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};
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bool ApplyStroke(SkPath& path, StrokeOpts opts) {
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SkPaint p;
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeCap(opts.cap);
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p.setStrokeJoin(opts.join);
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p.setStrokeWidth(opts.width);
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p.setStrokeMiter(opts.miter_limit);
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return p.getFillPath(path, &path);
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}
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// to map from raw memory to a uint8array
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Uint8Array getSkDataBytes(const SkData *data) {
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return Uint8Array(typed_memory_view(data->size(), data->bytes()));
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}
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// These objects have private destructors / delete mthods - I don't think
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// we need to do anything other than tell emscripten to do nothing.
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namespace emscripten {
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namespace internal {
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template<typename ClassType>
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void raw_destructor(ClassType *);
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template<>
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void raw_destructor<SkData>(SkData *ptr) {
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}
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template<>
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void raw_destructor<SkVertices>(SkVertices *ptr) {
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}
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}
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}
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// Some timesignatures below have uintptr_t instead of a pointer to a primative
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// type (e.g. SkScalar). This is necessary because we can't use "bind" (EMSCRIPTEN_BINDINGS)
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// and pointers to primitive types (Only bound types like SkPoint). We could if we used
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// cwrap (see https://becominghuman.ai/passing-and-returning-webassembly-array-parameters-a0f572c65d97)
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// but that requires us to stick to C code and, AFAIK, doesn't allow us to return nice things like
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// SkPath or SkCanvas.
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//
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// So, basically, if we are using C++ and EMSCRIPTEN_BINDINGS, we can't have primative pointers
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// in our function type signatures. (this gives an error message like "Cannot call foo due to unbound
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// types Pi, Pf"). But, we can just pretend they are numbers and cast them to be pointers and
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// the compiler is happy.
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EMSCRIPTEN_BINDINGS(Skia) {
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function("initFonts", &initFonts);
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#if SK_SUPPORT_GPU
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function("_getWebGLSurface", &getWebGLSurface, allow_raw_pointers());
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function("currentContext", &emscripten_webgl_get_current_context);
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function("setCurrentContext", &emscripten_webgl_make_context_current);
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constant("gpu", true);
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#endif
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function("_decodeImage", optional_override([](uintptr_t /* uint8_t* */ iptr,
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size_t length)->sk_sp<SkImage> {
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uint8_t* imgData = reinterpret_cast<uint8_t*>(iptr);
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sk_sp<SkData> bytes = SkData::MakeWithoutCopy(imgData, length);
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return SkImage::MakeFromEncoded(bytes);
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}), allow_raw_pointers());
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function("_getRasterDirectSurface", optional_override([](const SimpleImageInfo ii,
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uintptr_t /* uint8_t* */ pptr,
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size_t rowBytes)->sk_sp<SkSurface> {
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uint8_t* pixels = reinterpret_cast<uint8_t*>(pptr);
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SkImageInfo imageInfo = toSkImageInfo(ii);
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return SkSurface::MakeRasterDirect(imageInfo, pixels, rowBytes, nullptr);
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}), allow_raw_pointers());
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function("_getRasterN32PremulSurface", optional_override([](int width, int height)->sk_sp<SkSurface> {
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return SkSurface::MakeRasterN32Premul(width, height, nullptr);
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}), allow_raw_pointers());
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function("getSkDataBytes", &getSkDataBytes, allow_raw_pointers());
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function("MakeSkCornerPathEffect", &SkCornerPathEffect::Make, allow_raw_pointers());
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function("MakeSkDiscretePathEffect", &SkDiscretePathEffect::Make, allow_raw_pointers());
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function("MakeBlurMaskFilter", optional_override([](SkBlurStyle style, SkScalar sigma, bool respectCTM)->sk_sp<SkMaskFilter> {
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// Adds a little helper because emscripten doesn't expose default params.
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return SkMaskFilter::MakeBlur(style, sigma, respectCTM);
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}), allow_raw_pointers());
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function("MakePathFromOp", &MakePathFromOp);
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// These won't be called directly, there's a JS helper to deal with typed arrays.
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function("_MakeSkDashPathEffect", optional_override([](uintptr_t /* float* */ cptr, int count, SkScalar phase)->sk_sp<SkPathEffect> {
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// See comment above for uintptr_t explanation
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const float* intervals = reinterpret_cast<const float*>(cptr);
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return SkDashPathEffect::Make(intervals, count, phase);
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}), 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());
|
|
// Allow localMatrix to be optional, so we have 2 declarations of these gradients
|
|
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("_MakeTwoPointConicalGradientShader", optional_override([](
|
|
SkPoint start, SkScalar startRadius,
|
|
SkPoint end, SkScalar endRadius,
|
|
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::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, 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::MakeTwoPointConical(start, startRadius, end, endRadius,
|
|
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("clipPath", select_overload<void (const SkPath&, SkClipOp, bool)>(&SkCanvas::clipPath))
|
|
.function("drawImage", select_overload<void (const sk_sp<SkImage>&, SkScalar, SkScalar, const SkPaint*)>(&SkCanvas::drawImage), allow_raw_pointers())
|
|
.function("drawImageRect", optional_override([](SkCanvas& self, const sk_sp<SkImage>& 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("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("restore", &SkCanvas::restore)
|
|
.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("height", &SkImage::height)
|
|
.function("width", &SkImage::width)
|
|
.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("getBlendMode", &SkPaint::getBlendMode)
|
|
.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("getFilterQuality", &SkPaint::getFilterQuality)
|
|
.function("getStrokeCap", &SkPaint::getStrokeCap)
|
|
.function("getStrokeJoin", &SkPaint::getStrokeJoin)
|
|
.function("getStrokeMiter", &SkPaint::getStrokeMiter)
|
|
.function("getStrokeWidth", &SkPaint::getStrokeWidth)
|
|
.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("setBlendMode", &SkPaint::setBlendMode)
|
|
.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("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)
|
|
.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)
|
|
#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);
|
|
|
|
enum_<SkAlphaType>("AlphaType")
|
|
.value("Opaque", SkAlphaType::kOpaque_SkAlphaType)
|
|
.value("Premul", SkAlphaType::kPremul_SkAlphaType)
|
|
.value("Unpremul", SkAlphaType::kUnpremul_SkAlphaType);
|
|
|
|
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_<SkClipOp>("ClipOp")
|
|
.value("Difference", SkClipOp::kDifference)
|
|
.value("Intersect", SkClipOp::kIntersect);
|
|
|
|
enum_<SkColorType>("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_<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_<SkFilterQuality>("FilterQuality")
|
|
.value("None", SkFilterQuality::kNone_SkFilterQuality)
|
|
.value("Low", SkFilterQuality::kLow_SkFilterQuality)
|
|
.value("Medium", SkFilterQuality::kMedium_SkFilterQuality)
|
|
.value("High", SkFilterQuality::kHigh_SkFilterQuality);
|
|
|
|
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);
|
|
|
|
value_object<SimpleImageInfo>("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>("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);
|
|
constant("WHITE", (JSColor) SK_ColorWHITE);
|
|
// 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);
|
|
|
|
#if SK_INCLUDE_MANAGED_SKOTTIE
|
|
class_<ManagedAnimation>("ManagedAnimation")
|
|
.smart_ptr<sk_sp<ManagedAnimation>>("sk_sp<ManagedAnimation>")
|
|
.function("version" , &ManagedAnimation::version)
|
|
.function("size" , &ManagedAnimation::size)
|
|
.function("duration" , &ManagedAnimation::duration)
|
|
.function("seek" , &ManagedAnimation::seek)
|
|
.function("render" , select_overload<void(SkCanvas*) const>
|
|
(&ManagedAnimation::render), allow_raw_pointers())
|
|
.function("render" , select_overload<void(SkCanvas*, const SkRect&) const>
|
|
(&ManagedAnimation::render), allow_raw_pointers())
|
|
.function("setColor" , &ManagedAnimation::setColor)
|
|
.function("setOpacity", &ManagedAnimation::setOpacity)
|
|
.function("getColorProps" , &ManagedAnimation::getColorProps)
|
|
.function("getOpacityProps", &ManagedAnimation::getOpacityProps);
|
|
|
|
function("MakeManagedAnimation", &ManagedAnimation::Make);
|
|
constant("managed_skottie", true);
|
|
#endif // SK_INCLUDE_MANAGED_SKOTTIE
|
|
#endif // SK_INCLUDE_SKOTTIE
|
|
|
|
}
|