blob: 3f330454f74c2469be6b1dd17ffffd3e94f04fee [file] [log] [blame]
/*
* Copyright 2018 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/android/SkAnimatedImage.h"
#include "include/codec/SkAndroidCodec.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkBlurTypes.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkData.h"
#include "include/core/SkDrawable.h"
#include "include/core/SkEncodedImageFormat.h"
#include "include/core/SkFilterQuality.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMaskFilter.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkPathEffect.h"
#include "include/core/SkPathMeasure.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkRRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkString.h"
#include "include/core/SkStrokeRec.h"
#include "include/core/SkSurface.h"
#include "include/core/SkSurfaceProps.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/core/SkVertices.h"
#include "include/effects/SkCornerPathEffect.h"
#include "include/effects/SkDashPathEffect.h"
#include "include/effects/SkDiscretePathEffect.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkTrimPathEffect.h"
#include "include/pathops/SkPathOps.h"
#include "include/utils/SkParsePath.h"
#include "include/utils/SkShadowUtils.h"
#include "modules/skshaper/include/SkShaper.h"
#include "src/core/SkFontMgrPriv.h"
#include "src/core/SkMakeUnique.h"
#include <iostream>
#include <string>
#include "modules/canvaskit/WasmAliases.h"
#include <emscripten.h>
#include <emscripten/bind.h>
#if SK_SUPPORT_GPU
#include "include/gpu/GrBackendSurface.h"
#include "include/gpu/GrContext.h"
#include "include/gpu/gl/GrGLInterface.h"
#include "include/gpu/gl/GrGLTypes.h"
#include <GL/gl.h>
#include <emscripten/html5.h>
#endif
#ifdef SK_INCLUDE_PARAGRAPH
#include "modules/skparagraph/include/Paragraph.h"
#endif
// Aliases for less typing
using BoneIndices = SkVertices::BoneIndices;
using BoneWeights = SkVertices::BoneWeights;
using Bone = SkVertices::Bone;
#ifndef SK_NO_FONTS
sk_sp<SkFontMgr> SkFontMgr_New_Custom_Data(const uint8_t** datas, const size_t* sizes, int n);
#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);
}
SimpleMatrix toSimpleSkMatrix(const SkMatrix& sm) {
SimpleMatrix m {sm[0], sm[1], sm[2],
sm[3], sm[4], sm[5],
sm[6], sm[7], sm[8]};
return m;
}
struct SimpleImageInfo {
int width;
int height;
SkColorType colorType;
SkAlphaType alphaType;
// TODO color spaces?
};
SkImageInfo toSkImageInfo(const SimpleImageInfo& sii) {
return SkImageInfo::Make(sii.width, sii.height, sii.colorType, sii.alphaType);
}
#if SK_SUPPORT_GPU
sk_sp<GrContext> MakeGrContext(EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context)
{
EMSCRIPTEN_RESULT r = emscripten_webgl_make_context_current(context);
if (r < 0) {
printf("failed to make webgl context current %d\n", r);
return nullptr;
}
// setup GrContext
auto interface = GrGLMakeNativeInterface();
// setup contexts
sk_sp<GrContext> grContext(GrContext::MakeGL(interface));
return grContext;
}
sk_sp<SkSurface> MakeOnScreenGLSurface(sk_sp<GrContext> grContext, int width, int height) {
glClearColor(0, 0, 0, 0);
glClearStencil(0);
glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
// Wrap the frame buffer object attached to the screen in a Skia render
// target so Skia can render to it
GrGLint buffer;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &buffer);
GrGLFramebufferInfo info;
info.fFBOID = (GrGLuint) buffer;
SkColorType colorType;
info.fFormat = GL_RGBA8;
colorType = kRGBA_8888_SkColorType;
GrBackendRenderTarget target(width, height, 0, 8, info);
sk_sp<SkSurface> surface(SkSurface::MakeFromBackendRenderTarget(grContext.get(), target,
kBottomLeft_GrSurfaceOrigin,
colorType, nullptr, nullptr));
return surface;
}
sk_sp<SkSurface> MakeRenderTarget(sk_sp<GrContext> grContext, int width, int height) {
SkImageInfo info = SkImageInfo::MakeN32(width, height, SkAlphaType::kPremul_SkAlphaType);
sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(grContext.get(),
SkBudgeted::kYes,
info, 0,
kBottomLeft_GrSurfaceOrigin,
nullptr, true));
return surface;
}
sk_sp<SkSurface> MakeRenderTarget(sk_sp<GrContext> grContext, SimpleImageInfo sii) {
sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(grContext.get(),
SkBudgeted::kYes,
toSkImageInfo(sii), 0,
kBottomLeft_GrSurfaceOrigin,
nullptr, true));
return surface;
}
#endif
//========================================================================================
// Path things
//========================================================================================
// All these Apply* methods are simple wrappers to avoid returning an object.
// The default WASM bindings produce code that will leak if a return value
// isn't assigned to a JS variable and has delete() called on it.
// These Apply methods, combined with the smarter binding code allow for chainable
// commands that don't leak if the return value is ignored (i.e. when used intuitively).
void ApplyAddArc(SkPath& orig, const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle) {
orig.addArc(oval, startAngle, sweepAngle);
}
void ApplyAddOval(SkPath& orig, const SkRect& oval, bool ccw, unsigned start) {
orig.addOval(oval, ccw ? SkPath::Direction::kCCW_Direction :
SkPath::Direction::kCW_Direction, start);
}
void ApplyAddPath(SkPath& orig, const SkPath& newPath,
SkScalar scaleX, SkScalar skewX, SkScalar transX,
SkScalar skewY, SkScalar scaleY, SkScalar transY,
SkScalar pers0, SkScalar pers1, SkScalar pers2,
bool extendPath) {
SkMatrix m = SkMatrix::MakeAll(scaleX, skewX , transX,
skewY , scaleY, transY,
pers0 , pers1 , pers2);
orig.addPath(newPath, m, extendPath ? SkPath::kExtend_AddPathMode :
SkPath::kAppend_AddPathMode);
}
void ApplyAddRect(SkPath& path, SkScalar left, SkScalar top,
SkScalar right, SkScalar bottom, bool ccw) {
path.addRect(left, top, right, bottom,
ccw ? SkPath::Direction::kCCW_Direction :
SkPath::Direction::kCW_Direction);
}
void ApplyAddRoundRect(SkPath& path, SkScalar left, SkScalar top,
SkScalar right, SkScalar bottom, uintptr_t /* SkScalar* */ rPtr,
bool ccw) {
// See comment below for uintptr_t explanation
const SkScalar* radii = reinterpret_cast<const SkScalar*>(rPtr);
path.addRoundRect(SkRect::MakeLTRB(left, top, right, bottom), radii,
ccw ? SkPath::Direction::kCCW_Direction : SkPath::Direction::kCW_Direction);
}
void ApplyArcTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2,
SkScalar radius) {
p.arcTo(x1, y1, x2, y2, radius);
}
void ApplyArcToAngle(SkPath& p, SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, bool forceMoveTo) {
p.arcTo(oval, startAngle, sweepAngle, forceMoveTo);
}
void ApplyAddArcToArcSize(SkPath& orig, SkScalar rx, SkScalar ry, SkScalar xAxisRotate,
bool useSmallArc, bool ccw, SkScalar x, SkScalar y) {
auto arcSize = useSmallArc ? SkPath::ArcSize::kSmall_ArcSize : SkPath::ArcSize::kLarge_ArcSize;
auto sweep = ccw ? SkPath::Direction::kCCW_Direction : SkPath::Direction::kCW_Direction;
orig.arcTo(rx, ry, xAxisRotate, arcSize, sweep, x, y);
}
void ApplyClose(SkPath& p) {
p.close();
}
void ApplyConicTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2,
SkScalar w) {
p.conicTo(x1, y1, x2, y2, w);
}
void ApplyCubicTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2,
SkScalar x3, SkScalar y3) {
p.cubicTo(x1, y1, x2, y2, x3, y3);
}
void ApplyLineTo(SkPath& p, SkScalar x, SkScalar y) {
p.lineTo(x, y);
}
void ApplyMoveTo(SkPath& p, SkScalar x, SkScalar y) {
p.moveTo(x, y);
}
void ApplyReset(SkPath& p) {
p.reset();
}
void ApplyRewind(SkPath& p) {
p.rewind();
}
void ApplyQuadTo(SkPath& p, SkScalar x1, SkScalar y1, SkScalar x2, SkScalar y2) {
p.quadTo(x1, y1, x2, y2);
}
void ApplyTransform(SkPath& orig,
SkScalar scaleX, SkScalar skewX, SkScalar transX,
SkScalar skewY, SkScalar scaleY, SkScalar transY,
SkScalar pers0, SkScalar pers1, SkScalar pers2) {
SkMatrix m = SkMatrix::MakeAll(scaleX, skewX , transX,
skewY , scaleY, transY,
pers0 , pers1 , pers2);
orig.transform(m);
}
bool EMSCRIPTEN_KEEPALIVE ApplySimplify(SkPath& path) {
return Simplify(path, &path);
}
bool EMSCRIPTEN_KEEPALIVE ApplyPathOp(SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) {
return Op(pathOne, pathTwo, op, &pathOne);
}
JSString EMSCRIPTEN_KEEPALIVE ToSVGString(const SkPath& path) {
SkString s;
SkParsePath::ToSVGString(path, &s);
return emscripten::val(s.c_str());
}
SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromSVGString(std::string str) {
SkPath path;
if (SkParsePath::FromSVGString(str.c_str(), &path)) {
return emscripten::val(path);
}
return emscripten::val::null();
}
SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromOp(const SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) {
SkPath out;
if (Op(pathOne, pathTwo, op, &out)) {
return emscripten::val(out);
}
return emscripten::val::null();
}
SkPath EMSCRIPTEN_KEEPALIVE CopyPath(const SkPath& a) {
SkPath copy(a);
return copy;
}
bool EMSCRIPTEN_KEEPALIVE Equals(const SkPath& a, const SkPath& b) {
return a == b;
}
// =================================================================================
// Creating/Exporting Paths with cmd arrays
// =================================================================================
static const int MOVE = 0;
static const int LINE = 1;
static const int QUAD = 2;
static const int CONIC = 3;
static const int CUBIC = 4;
static const int CLOSE = 5;
template <typename VisitFunc>
void VisitPath(const SkPath& p, VisitFunc&& f) {
SkPath::RawIter iter(p);
SkPoint pts[4];
SkPath::Verb verb;
while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
f(verb, pts, iter);
}
}
JSArray EMSCRIPTEN_KEEPALIVE ToCmds(const SkPath& path) {
JSArray cmds = emscripten::val::array();
VisitPath(path, [&cmds](SkPath::Verb verb, const SkPoint pts[4], SkPath::RawIter iter) {
JSArray cmd = emscripten::val::array();
switch (verb) {
case SkPath::kMove_Verb:
cmd.call<void>("push", MOVE, pts[0].x(), pts[0].y());
break;
case SkPath::kLine_Verb:
cmd.call<void>("push", LINE, pts[1].x(), pts[1].y());
break;
case SkPath::kQuad_Verb:
cmd.call<void>("push", QUAD, pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y());
break;
case SkPath::kConic_Verb:
cmd.call<void>("push", CONIC,
pts[1].x(), pts[1].y(),
pts[2].x(), pts[2].y(), iter.conicWeight());
break;
case SkPath::kCubic_Verb:
cmd.call<void>("push", CUBIC,
pts[1].x(), pts[1].y(),
pts[2].x(), pts[2].y(),
pts[3].x(), pts[3].y());
break;
case SkPath::kClose_Verb:
cmd.call<void>("push", CLOSE);
break;
case SkPath::kDone_Verb:
SkASSERT(false);
break;
}
cmds.call<void>("push", cmd);
});
return cmds;
}
// This type signature is a mess, but it's necessary. See, we can't use "bind" (EMSCRIPTEN_BINDINGS)
// and pointers to primitive types (Only bound types like SkPoint). We could if we used
// cwrap (see https://becominghuman.ai/passing-and-returning-webassembly-array-parameters-a0f572c65d97)
// but that requires us to stick to C code and, AFAIK, doesn't allow us to return nice things like
// SkPath or SkOpBuilder.
//
// So, basically, if we are using C++ and EMSCRIPTEN_BINDINGS, we can't have primitive pointers
// in our function type signatures. (this gives an error message like "Cannot call foo due to unbound
// types Pi, Pf"). But, we can just pretend they are numbers and cast them to be pointers and
// the compiler is happy.
SkPathOrNull EMSCRIPTEN_KEEPALIVE MakePathFromCmds(uintptr_t /* float* */ cptr, int numCmds) {
const auto* cmds = reinterpret_cast<const float*>(cptr);
SkPath path;
float x1, y1, x2, y2, x3, y3;
// if there are not enough arguments, bail with the path we've constructed so far.
#define CHECK_NUM_ARGS(n) \
if ((i + n) > numCmds) { \
SkDebugf("Not enough args to match the verbs. Saw %d commands\n", numCmds); \
return emscripten::val::null(); \
}
for(int i = 0; i < numCmds;){
switch (sk_float_floor2int(cmds[i++])) {
case MOVE:
CHECK_NUM_ARGS(2);
x1 = cmds[i++], y1 = cmds[i++];
path.moveTo(x1, y1);
break;
case LINE:
CHECK_NUM_ARGS(2);
x1 = cmds[i++], y1 = cmds[i++];
path.lineTo(x1, y1);
break;
case QUAD:
CHECK_NUM_ARGS(4);
x1 = cmds[i++], y1 = cmds[i++];
x2 = cmds[i++], y2 = cmds[i++];
path.quadTo(x1, y1, x2, y2);
break;
case CONIC:
CHECK_NUM_ARGS(5);
x1 = cmds[i++], y1 = cmds[i++];
x2 = cmds[i++], y2 = cmds[i++];
x3 = cmds[i++]; // weight
path.conicTo(x1, y1, x2, y2, x3);
break;
case CUBIC:
CHECK_NUM_ARGS(6);
x1 = cmds[i++], y1 = cmds[i++];
x2 = cmds[i++], y2 = cmds[i++];
x3 = cmds[i++], y3 = cmds[i++];
path.cubicTo(x1, y1, x2, y2, x3, y3);
break;
case CLOSE:
path.close();
break;
default:
SkDebugf(" path: UNKNOWN command %f, aborting dump...\n", cmds[i-1]);
return emscripten::val::null();
}
}
#undef CHECK_NUM_ARGS
return emscripten::val(path);
}
//========================================================================================
// Path Effects
//========================================================================================
bool ApplyDash(SkPath& path, SkScalar on, SkScalar off, SkScalar phase) {
SkScalar intervals[] = { on, off };
auto pe = SkDashPathEffect::Make(intervals, 2, phase);
if (!pe) {
SkDebugf("Invalid args to dash()\n");
return false;
}
SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
if (pe->filterPath(&path, path, &rec, nullptr)) {
return true;
}
SkDebugf("Could not make dashed path\n");
return false;
}
bool ApplyTrim(SkPath& path, SkScalar startT, SkScalar stopT, bool isComplement) {
auto mode = isComplement ? SkTrimPathEffect::Mode::kInverted : SkTrimPathEffect::Mode::kNormal;
auto pe = SkTrimPathEffect::Make(startT, stopT, mode);
if (!pe) {
SkDebugf("Invalid args to trim(): startT and stopT must be in [0,1]\n");
return false;
}
SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
if (pe->filterPath(&path, path, &rec, nullptr)) {
return true;
}
SkDebugf("Could not trim path\n");
return false;
}
struct StrokeOpts {
// Default values are set in interface.js which allows clients
// to set any number of them. Otherwise, the binding code complains if
// any are omitted.
SkScalar width;
SkScalar miter_limit;
SkPaint::Join join;
SkPaint::Cap cap;
float precision;
};
bool ApplyStroke(SkPath& path, StrokeOpts opts) {
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeCap(opts.cap);
p.setStrokeJoin(opts.join);
p.setStrokeWidth(opts.width);
p.setStrokeMiter(opts.miter_limit);
return p.getFillPath(path, &path, nullptr, opts.precision);
}
// to map from raw memory to a uint8array
Uint8Array getSkDataBytes(const SkData *data) {
return Uint8Array(typed_memory_view(data->size(), data->bytes()));
}
// Text Shaping abstraction
struct ShapedTextOpts {
SkFont font;
bool leftToRight;
std::string text;
SkScalar width;
};
std::unique_ptr<SkShaper> shaper;
static sk_sp<SkTextBlob> do_shaping(const ShapedTextOpts& opts, SkPoint* pt) {
SkTextBlobBuilderRunHandler builder(opts.text.c_str(), {0, 0});
if (!shaper) {
shaper = SkShaper::Make();
}
shaper->shape(opts.text.c_str(), opts.text.length(),
opts.font, opts.leftToRight,
opts.width, &builder);
*pt = builder.endPoint();
return builder.makeBlob();
}
class ShapedText {
public:
ShapedText(ShapedTextOpts opts) : fOpts(opts) {}
SkRect getBounds() {
this->init();
return SkRect::MakeLTRB(0, 0, fOpts.width, fPoint.y());
}
SkTextBlob* blob() {
this->init();
return fBlob.get();
}
private:
const ShapedTextOpts fOpts;
SkPoint fPoint;
sk_sp<SkTextBlob> fBlob;
void init() {
if (!fBlob) {
fBlob = do_shaping(fOpts, &fPoint);
}
}
};
void drawShapedText(SkCanvas& canvas, ShapedText st, SkScalar x,
SkScalar y, SkPaint paint) {
canvas.drawTextBlob(st.blob(), x, y, paint);
}
// This is simpler than dealing with an SkPoint and SkVector
struct PosTan {
SkScalar px, py, tx, ty;
};
// SimpleRRect is simpler than passing a (complex) SkRRect over the wire to JS.
struct SimpleRRect {
SkRect rect;
SkScalar rx1;
SkScalar ry1;
SkScalar rx2;
SkScalar ry2;
SkScalar rx3;
SkScalar ry3;
SkScalar rx4;
SkScalar ry4;
};
SkRRect toRRect(const SimpleRRect& r) {
SkVector fRadii[4] = {{r.rx1, r.ry1}, {r.rx2, r.ry2},
{r.rx3, r.ry3}, {r.rx4, r.ry4}};
SkRRect rr;
rr.setRectRadii(r.rect, fRadii);
return rr;
}
struct TonalColors {
SkColor ambientColor;
SkColor spotColor;
};
TonalColors computeTonalColors(const TonalColors& in) {
TonalColors out;
SkShadowUtils::ComputeTonalColors(in.ambientColor, in.spotColor,
&out.ambientColor, &out.spotColor);
return out;
}
// These objects have private destructors / delete methods - 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) {
}
#ifndef SK_NO_FONTS
template<>
void raw_destructor<SkTextBlob>(SkTextBlob *ptr) {
}
template<>
void raw_destructor<SkTypeface>(SkTypeface *ptr) {
}
#endif
}
}
// Some signatures below have uintptr_t instead of a pointer to a primitive
// 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 primitive pointers
// in our function type signatures. (this gives an error message like "Cannot call foo due to unbound
// types Pi, Pf"). But, we can just pretend they are numbers and cast them to be pointers and
// the compiler is happy.
EMSCRIPTEN_BINDINGS(Skia) {
#if SK_SUPPORT_GPU
function("currentContext", &emscripten_webgl_get_current_context);
function("setCurrentContext", &emscripten_webgl_make_context_current);
function("MakeGrContext", &MakeGrContext);
function("MakeOnScreenGLSurface", &MakeOnScreenGLSurface);
function("MakeRenderTarget", select_overload<sk_sp<SkSurface>(sk_sp<GrContext>, int, int)>(&MakeRenderTarget));
function("MakeRenderTarget", select_overload<sk_sp<SkSurface>(sk_sp<GrContext>, SimpleImageInfo)>(&MakeRenderTarget));
constant("gpu", true);
#endif
function("computeTonalColors", &computeTonalColors);
function("_decodeAnimatedImage", optional_override([](uintptr_t /* uint8_t* */ iptr,
size_t length)->sk_sp<SkAnimatedImage> {
uint8_t* imgData = reinterpret_cast<uint8_t*>(iptr);
sk_sp<SkData> bytes = SkData::MakeFromMalloc(imgData, length);
auto codec = SkAndroidCodec::MakeFromData(bytes);
if (nullptr == codec) {
return nullptr;
}
return SkAnimatedImage::Make(std::move(codec));
}), allow_raw_pointers());
function("_decodeImage", optional_override([](uintptr_t /* uint8_t* */ iptr,
size_t length)->sk_sp<SkImage> {
uint8_t* imgData = reinterpret_cast<uint8_t*>(iptr);
sk_sp<SkData> bytes = SkData::MakeFromMalloc(imgData, length);
return SkImage::MakeFromEncoded(std::move(bytes));
}), allow_raw_pointers());
function("_getRasterDirectSurface", optional_override([](const SimpleImageInfo ii,
uintptr_t /* uint8_t* */ pPtr,
size_t rowBytes)->sk_sp<SkSurface> {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo imageInfo = toSkImageInfo(ii);
return SkSurface::MakeRasterDirect(imageInfo, pixels, rowBytes, nullptr);
}), allow_raw_pointers());
function("_getRasterN32PremulSurface", optional_override([](int width, int height)->sk_sp<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("_MakePathFromCmds", &MakePathFromCmds);
function("MakePathFromOp", &MakePathFromOp);
function("MakePathFromSVGString", &MakePathFromSVGString);
// These won't be called directly, there's a JS helper to deal with typed arrays.
function("_MakeSkDashPathEffect", optional_override([](uintptr_t /* float* */ cptr, int count, SkScalar phase)->sk_sp<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("_MakeImage", optional_override([](SimpleImageInfo ii,
uintptr_t /* uint8_t* */ pPtr, int plen,
size_t rowBytes)->sk_sp<SkImage> {
// See comment above for uintptr_t explanation
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo info = toSkImageInfo(ii);
sk_sp<SkData> pixelData = SkData::MakeFromMalloc(pixels, plen);
return SkImage::MakeRasterData(info, pixelData, rowBytes);
}), allow_raw_pointers());
function("_MakeLinearGradientShader", optional_override([](SkPoint start, SkPoint end,
uintptr_t /* SkColor* */ cPtr, uintptr_t /* SkScalar* */ pPtr,
int count, SkTileMode mode, uint32_t flags)->sk_sp<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, SkTileMode 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, SkTileMode 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, SkTileMode 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, SkTileMode 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, SkTileMode 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());
#if SK_SUPPORT_GPU
class_<GrContext>("GrContext")
.smart_ptr<sk_sp<GrContext>>("sk_sp<GrContext>")
.function("getResourceCacheLimitBytes", optional_override([](GrContext& self)->size_t {
int maxResources = 0;// ignored
size_t currMax = 0;
self.getResourceCacheLimits(&maxResources, &currMax);
return currMax;
}))
.function("getResourceCacheUsageBytes", optional_override([](GrContext& self)->size_t {
int usedResources = 0;// ignored
size_t currUsage = 0;
self.getResourceCacheUsage(&usedResources, &currUsage);
return currUsage;
}))
.function("setResourceCacheLimitBytes", optional_override([](GrContext& self, size_t maxResourceBytes)->void {
int maxResources = 0;
size_t currMax = 0; // ignored
self.getResourceCacheLimits(&maxResources, &currMax);
self.setResourceCacheLimits(maxResources, maxResourceBytes);
}));
#endif
class_<SkAnimatedImage>("SkAnimatedImage")
.smart_ptr<sk_sp<SkAnimatedImage>>("sk_sp<SkAnimatedImage>")
.function("getRepetitionCount", &SkAnimatedImage::getRepetitionCount)
.function("decodeNextFrame", &SkAnimatedImage::decodeNextFrame);
class_<SkCanvas>("SkCanvas")
.constructor<>()
.function("clear", &SkCanvas::clear)
.function("clipPath", select_overload<void (const SkPath&, SkClipOp, bool)>(&SkCanvas::clipPath))
.function("clipRect", select_overload<void (const SkRect&, SkClipOp, bool)>(&SkCanvas::clipRect))
.function("concat", optional_override([](SkCanvas& self, const SimpleMatrix& m) {
self.concat(toSkMatrix(m));
}))
.function("drawArc", &SkCanvas::drawArc)
.function("_drawAtlas", optional_override([](SkCanvas& self,
const sk_sp<SkImage>& atlas, uintptr_t /* SkRSXform* */ xptr,
uintptr_t /* SkRect* */ rptr, uintptr_t /* SkColor* */ cptr, int count,
SkBlendMode mode, const SkPaint* paint)->void {
// See comment above for uintptr_t explanation
const SkRSXform* dstXforms = reinterpret_cast<const SkRSXform*>(xptr);
const SkRect* srcRects = reinterpret_cast<const SkRect*>(rptr);
const SkColor* colors = nullptr;
if (cptr) {
colors = reinterpret_cast<const SkColor*>(cptr);
}
self.drawAtlas(atlas, dstXforms, srcRects, colors, count, mode, nullptr, paint);
}), allow_raw_pointers())
.function("drawCircle", select_overload<void (SkScalar, SkScalar, SkScalar, const SkPaint& paint)>(&SkCanvas::drawCircle))
.function("drawDRRect",optional_override([](SkCanvas& self, const SimpleRRect& o, const SimpleRRect& i, const SkPaint& paint) {
self.drawDRRect(toRRect(o), toRRect(i), paint);
}))
.function("drawAnimatedImage", optional_override([](SkCanvas& self, sk_sp<SkAnimatedImage>& aImg,
SkScalar x, SkScalar y)->void {
self.drawDrawable(aImg.get(), x, y);
}), allow_raw_pointers())
.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("drawLine", select_overload<void (SkScalar, SkScalar, SkScalar, SkScalar, const SkPaint&)>(&SkCanvas::drawLine))
.function("drawOval", &SkCanvas::drawOval)
.function("drawPaint", &SkCanvas::drawPaint)
#ifdef SK_INCLUDE_PARAGRAPH
.function("drawParagraph", optional_override([](SkCanvas& self, skia::textlayout::Paragraph* p,
SkScalar x, SkScalar y) {
p->paint(&self, x, y);
}), allow_raw_pointers())
#endif
.function("drawPath", &SkCanvas::drawPath)
// Of note, picture is *not* what is colloquially thought of as a "picture", what we call
// a bitmap. An SkPicture is a series of draw commands.
.function("drawPicture", select_overload<void (const sk_sp<SkPicture>&)>(&SkCanvas::drawPicture))
.function("drawRRect",optional_override([](SkCanvas& self, const SimpleRRect& r, const SkPaint& paint) {
self.drawRRect(toRRect(r), paint);
}))
.function("drawRect", &SkCanvas::drawRect)
.function("drawRoundRect", &SkCanvas::drawRoundRect)
.function("drawShadow", optional_override([](SkCanvas& self, const SkPath& path,
const SkPoint3& zPlaneParams,
const SkPoint3& lightPos, SkScalar lightRadius,
SkColor ambientColor, SkColor spotColor,
uint32_t flags) {
SkShadowUtils::DrawShadow(&self, path, zPlaneParams, lightPos, lightRadius,
ambientColor, spotColor, flags);
}))
#ifndef SK_NO_FONTS
.function("_drawShapedText", &drawShapedText)
.function("_drawSimpleText", optional_override([](SkCanvas& self, uintptr_t /* char* */ sptr,
size_t len, SkScalar x, SkScalar y, const SkFont& font,
const SkPaint& paint) {
// See comment above for uintptr_t explanation
const char* str = reinterpret_cast<const char*>(sptr);
self.drawSimpleText(str, len, SkTextEncoding::kUTF8, x, y, font, paint);
}))
.function("drawTextBlob", select_overload<void (const sk_sp<SkTextBlob>&, SkScalar, SkScalar, const SkPaint&)>(&SkCanvas::drawTextBlob))
#endif
.function("drawVertices", select_overload<void (const sk_sp<SkVertices>&, SkBlendMode, const SkPaint&)>(&SkCanvas::drawVertices))
.function("flush", &SkCanvas::flush)
.function("getSaveCount", &SkCanvas::getSaveCount)
.function("getTotalMatrix", optional_override([](const SkCanvas& self)->SimpleMatrix {
SkMatrix m = self.getTotalMatrix();
return toSimpleSkMatrix(m);
}))
.function("makeSurface", optional_override([](SkCanvas& self, SimpleImageInfo sii)->sk_sp<SkSurface> {
return self.makeSurface(toSkImageInfo(sii), nullptr);
}), allow_raw_pointers())
.function("_readPixels", optional_override([](SkCanvas& self, SimpleImageInfo di,
uintptr_t /* uint8_t* */ pPtr,
size_t dstRowBytes, int srcX, int srcY) {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo dstInfo = toSkImageInfo(di);
return self.readPixels(dstInfo, pixels, dstRowBytes, srcX, srcY);
}))
.function("restore", &SkCanvas::restore)
.function("restoreToCount", &SkCanvas::restoreToCount)
.function("rotate", select_overload<void (SkScalar, SkScalar, SkScalar)>(&SkCanvas::rotate))
.function("save", &SkCanvas::save)
.function("saveLayer", select_overload<int (const SkRect&, const SkPaint*)>(&SkCanvas::saveLayer),
allow_raw_pointers())
.function("scale", &SkCanvas::scale)
.function("skew", &SkCanvas::skew)
.function("translate", &SkCanvas::translate)
.function("_writePixels", optional_override([](SkCanvas& self, SimpleImageInfo di,
uintptr_t /* uint8_t* */ pPtr,
size_t srcRowBytes, int dstX, int dstY) {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo dstInfo = toSkImageInfo(di);
return self.writePixels(dstInfo, pixels, srcRowBytes, dstX, dstY);
}));
class_<SkColorFilter>("SkColorFilter")
.smart_ptr<sk_sp<SkColorFilter>>("sk_sp<SkColorFilter>>")
.class_function("MakeBlend", &SkColorFilters::Blend)
.class_function("MakeCompose", &SkColorFilters::Compose)
.class_function("MakeLerp", &SkColorFilters::Lerp)
.class_function("MakeLinearToSRGBGamma", &SkColorFilters::LinearToSRGBGamma)
.class_function("_makeMatrix", optional_override([](uintptr_t /* float* */ fPtr) {
float* twentyFloats = reinterpret_cast<float*>(fPtr);
return SkColorFilters::Matrix(twentyFloats);
}))
.class_function("MakeSRGBToLinearGamma", &SkColorFilters::SRGBToLinearGamma);
class_<SkData>("SkData")
.smart_ptr<sk_sp<SkData>>("sk_sp<SkData>>")
.function("size", &SkData::size);
class_<SkDrawable>("SkDrawable")
.smart_ptr<sk_sp<SkDrawable>>("sk_sp<SkDrawable>>");
#ifndef SK_NO_FONTS
class_<SkFont>("SkFont")
.constructor<>()
.constructor<sk_sp<SkTypeface>>()
.constructor<sk_sp<SkTypeface>, SkScalar>()
.constructor<sk_sp<SkTypeface>, SkScalar, SkScalar, SkScalar>()
.function("getScaleX", &SkFont::getScaleX)
.function("getSize", &SkFont::getSize)
.function("getSkewX", &SkFont::getSkewX)
.function("getTypeface", &SkFont::getTypeface, allow_raw_pointers())
.function("_getWidths", optional_override([](SkFont& self, uintptr_t /* char* */ sptr,
size_t strLen, size_t expectedCodePoints,
uintptr_t /* SkScalar* */ wptr) -> bool {
char* str = reinterpret_cast<char*>(sptr);
SkScalar* widths = reinterpret_cast<SkScalar*>(wptr);
SkGlyphID* glyphStorage = new SkGlyphID[expectedCodePoints];
int actualCodePoints = self.textToGlyphs(str, strLen, SkTextEncoding::kUTF8,
glyphStorage, expectedCodePoints);
if (actualCodePoints != expectedCodePoints) {
SkDebugf("Actually %d glyphs, expected only %d\n",
actualCodePoints, expectedCodePoints);
return false;
}
self.getWidths(glyphStorage, actualCodePoints, widths);
delete[] glyphStorage;
return true;
}))
.function("measureText", optional_override([](SkFont& self, std::string text) {
// TODO(kjlubick): This does not work well for non-ascii
// Need to maybe add a helper in interface.js that supports UTF-8
// Otherwise, go with std::wstring and set UTF-32 encoding.
return self.measureText(text.c_str(), text.length(), SkTextEncoding::kUTF8);
}))
.function("setScaleX", &SkFont::setScaleX)
.function("setSize", &SkFont::setSize)
.function("setSkewX", &SkFont::setSkewX)
.function("setTypeface", &SkFont::setTypeface, allow_raw_pointers());
class_<ShapedText>("ShapedText")
.constructor<ShapedTextOpts>()
.function("getBounds", &ShapedText::getBounds);
class_<SkFontMgr>("SkFontMgr")
.smart_ptr<sk_sp<SkFontMgr>>("sk_sp<SkFontMgr>")
.class_function("_fromData", optional_override([](uintptr_t /* uint8_t** */ dPtr,
uintptr_t /* size_t* */ sPtr,
int numFonts)->sk_sp<SkFontMgr> {
// See comment above for uintptr_t explanation
auto datas = reinterpret_cast<const uint8_t**>(dPtr);
auto sizes = reinterpret_cast<const size_t*>(sPtr);
return SkFontMgr_New_Custom_Data(datas, sizes, numFonts);
}), allow_raw_pointers())
.class_function("RefDefault", &SkFontMgr::RefDefault)
#ifdef SK_DEBUG
.function("dumpFamilies", optional_override([](SkFontMgr& self) {
int numFam = self.countFamilies();
SkDebugf("There are %d font families\n", numFam);
for (int i = 0 ; i< numFam; i++) {
SkString s;
self.getFamilyName(i, &s);
SkDebugf("\t%s\n", s.c_str());
}
}))
#endif
.function("countFamilies", &SkFontMgr::countFamilies)
.function("_makeTypefaceFromData", optional_override([](SkFontMgr& self,
uintptr_t /* uint8_t* */ fPtr,
int flen)->sk_sp<SkTypeface> {
// See comment above for uintptr_t explanation
uint8_t* font = reinterpret_cast<uint8_t*>(fPtr);
sk_sp<SkData> fontData = SkData::MakeFromMalloc(font, flen);
return self.makeFromData(fontData);
}), allow_raw_pointers());
#endif
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))
// Allow localMatrix to be optional, so we have 2 declarations of these shaders
.function("_makeShader", optional_override([](sk_sp<SkImage> self,
SkTileMode tx, SkTileMode ty)->sk_sp<SkShader> {
return self->makeShader(tx, ty, nullptr);
}), allow_raw_pointers())
.function("_makeShader", optional_override([](sk_sp<SkImage> self,
SkTileMode tx, SkTileMode ty,
const SimpleMatrix& lm)->sk_sp<SkShader> {
SkMatrix localMatrix = toSkMatrix(lm);
return self->makeShader(tx, ty, &localMatrix);
}), allow_raw_pointers())
.function("_readPixels", optional_override([](sk_sp<SkImage> self,
SimpleImageInfo sii, uintptr_t /* uint8_t* */ pPtr,
size_t dstRowBytes, int srcX, int srcY)->bool {
// See comment above for uintptr_t explanation
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo ii = toSkImageInfo(sii);
return self->readPixels(ii, pixels, dstRowBytes, srcX, srcY);
}), allow_raw_pointers());
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", &SkPaint::getColor)
.function("getFilterQuality", &SkPaint::getFilterQuality)
.function("getStrokeCap", &SkPaint::getStrokeCap)
.function("getStrokeJoin", &SkPaint::getStrokeJoin)
.function("getStrokeMiter", &SkPaint::getStrokeMiter)
.function("getStrokeWidth", &SkPaint::getStrokeWidth)
.function("setAntiAlias", &SkPaint::setAntiAlias)
.function("setBlendMode", &SkPaint::setBlendMode)
.function("setColor", optional_override([](SkPaint& self, SkColor c) {
self.setColor(c);
}))
.function("setColorf", optional_override([](SkPaint& self,
float r, float g, float b, float a) {
self.setColor({r, g, b, a});
}))
.function("setColorFilter", &SkPaint::setColorFilter)
.function("setFilterQuality", &SkPaint::setFilterQuality)
.function("setMaskFilter", &SkPaint::setMaskFilter)
.function("setPathEffect", &SkPaint::setPathEffect)
.function("setShader", &SkPaint::setShader)
.function("setStrokeCap", &SkPaint::setStrokeCap)
.function("setStrokeJoin", &SkPaint::setStrokeJoin)
.function("setStrokeMiter", &SkPaint::setStrokeMiter)
.function("setStrokeWidth", &SkPaint::setStrokeWidth)
.function("setStyle", &SkPaint::setStyle);
class_<SkPathEffect>("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("_addOval", &ApplyAddOval)
.function("_addPath", &ApplyAddPath)
// interface.js has 4 overloads of addRect
.function("_addRect", &ApplyAddRect)
// interface.js has 4 overloads of addRoundRect
.function("_addRoundRect", &ApplyAddRoundRect)
.function("_arcTo", &ApplyArcTo)
.function("_arcTo", &ApplyArcToAngle)
.function("_arcTo", &ApplyAddArcToArcSize)
.function("_close", &ApplyClose)
.function("_conicTo", &ApplyConicTo)
.function("countPoints", &SkPath::countPoints)
.function("contains", &SkPath::contains)
.function("_cubicTo", &ApplyCubicTo)
.function("getPoint", &SkPath::getPoint)
.function("isEmpty", &SkPath::isEmpty)
.function("isVolatile", &SkPath::isVolatile)
.function("_lineTo", &ApplyLineTo)
.function("_moveTo", &ApplyMoveTo)
.function("reset", &ApplyReset)
.function("rewind", &ApplyRewind)
.function("_quadTo", &ApplyQuadTo)
.function("setIsVolatile", &SkPath::setIsVolatile)
.function("_transform", select_overload<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("toCmds", &ToCmds)
.function("setFillType", &SkPath::setFillType)
.function("getFillType", &SkPath::getFillType)
.function("getBounds", &SkPath::getBounds)
.function("computeTightBounds", &SkPath::computeTightBounds)
.function("equals", &Equals)
.function("copy", &CopyPath)
#ifdef SK_DEBUG
.function("dump", select_overload<void() const>(&SkPath::dump))
.function("dumpHex", select_overload<void() const>(&SkPath::dumpHex))
#endif
;
class_<SkPathMeasure>("SkPathMeasure")
.constructor<const SkPath&, bool, SkScalar>()
.function("getLength", &SkPathMeasure::getLength)
.function("getPosTan", optional_override([](SkPathMeasure& self,
SkScalar distance) -> PosTan {
SkPoint p{0, 0};
SkVector v{0, 0};
if (!self.getPosTan(distance, &p, &v)) {
SkDebugf("zero-length path in getPosTan\n");
}
return PosTan{p.x(), p.y(), v.x(), v.y()};
}))
.function("isClosed", &SkPathMeasure::isClosed)
.function("nextContour", &SkPathMeasure::nextContour);
class_<SkPictureRecorder>("SkPictureRecorder")
.constructor<>()
.function("beginRecording", optional_override([](SkPictureRecorder& self,
const SkRect& bounds) -> SkCanvas* {
return self.beginRecording(bounds, nullptr, 0);
}), allow_raw_pointers())
.function("finishRecordingAsPicture", optional_override([](SkPictureRecorder& self)
-> sk_sp<SkPicture> {
return self.finishRecordingAsPicture(0);
}), allow_raw_pointers());
class_<SkPicture>("SkPicture")
.smart_ptr<sk_sp<SkPicture>>("sk_sp<SkPicture>")
// The serialized format of an SkPicture (informally called an "skp"), is not something
// that clients should ever rely on. It is useful when filing bug reports, but that's
// about it. The format may change at anytime and no promises are made for backwards
// or forward compatibility.
.function("DEBUGONLY_serialize", optional_override([](SkPicture& self) -> sk_sp<SkData> {
// Emscripten doesn't play well with optional arguments, which we don't
// want to expose anyway.
return self.serialize();
}), allow_raw_pointers());
class_<SkShader>("SkShader")
.smart_ptr<sk_sp<SkShader>>("sk_sp<SkShader>");
class_<SkSurface>("SkSurface")
.smart_ptr<sk_sp<SkSurface>>("sk_sp<SkSurface>")
.function("_flush", select_overload<void()>(&SkSurface::flush))
.function("getCanvas", &SkSurface::getCanvas, allow_raw_pointers())
.function("height", &SkSurface::height)
.function("makeImageSnapshot", select_overload<sk_sp<SkImage>()>(&SkSurface::makeImageSnapshot))
.function("makeImageSnapshot", select_overload<sk_sp<SkImage>(const SkIRect& bounds)>(&SkSurface::makeImageSnapshot))
.function("makeSurface", optional_override([](SkSurface& self, SimpleImageInfo sii)->sk_sp<SkSurface> {
return self.makeSurface(toSkImageInfo(sii));
}), allow_raw_pointers())
.function("width", &SkSurface::width);
#ifndef SK_NO_FONTS
class_<SkTextBlob>("SkTextBlob")
.smart_ptr<sk_sp<SkTextBlob>>("sk_sp<SkTextBlob>>")
.class_function("_MakeFromRSXform", optional_override([](uintptr_t /* char* */ sptr,
size_t strBtyes,
uintptr_t /* SkRSXform* */ xptr,
const SkFont& font,
SkTextEncoding encoding)->sk_sp<SkTextBlob> {
// See comment above for uintptr_t explanation
const char* str = reinterpret_cast<const char*>(sptr);
const SkRSXform* xforms = reinterpret_cast<const SkRSXform*>(xptr);
return SkTextBlob::MakeFromRSXform(str, strBtyes, xforms, font, encoding);
}), allow_raw_pointers())
.class_function("_MakeFromText", optional_override([](uintptr_t /* char* */ sptr,
size_t len, const SkFont& font,
SkTextEncoding encoding)->sk_sp<SkTextBlob> {
// See comment above for uintptr_t explanation
const char* str = reinterpret_cast<const char*>(sptr);
return SkTextBlob::MakeFromText(str, len, font, encoding);
}), allow_raw_pointers());
class_<SkTypeface>("SkTypeface")
.smart_ptr<sk_sp<SkTypeface>>("sk_sp<SkTypeface>");
#endif
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);
// Not intended to be called directly by clients
class_<SkVertices::Builder>("_SkVerticesBuilder")
.constructor<SkVertices::VertexMode, int, int, uint32_t>()
.function("boneIndices", optional_override([](SkVertices::Builder& self)->uintptr_t /* BoneIndices* */{
// Emscripten won't let us return bare pointers, but we can return ints just fine.
return reinterpret_cast<uintptr_t>(self.boneIndices());
}))
.function("boneWeights", optional_override([](SkVertices::Builder& self)->uintptr_t /* BoneWeights* */{
// Emscripten won't let us return bare pointers, but we can return ints just fine.
return reinterpret_cast<uintptr_t>(self.boneWeights());
}))
.function("colors", optional_override([](SkVertices::Builder& self)->uintptr_t /* SkColor* */{
// Emscripten won't let us return bare pointers, but we can return ints just fine.
return reinterpret_cast<uintptr_t>(self.colors());
}))
.function("detach", &SkVertices::Builder::detach)
.function("indices", optional_override([](SkVertices::Builder& self)->uintptr_t /* uint16_t* */{
// Emscripten won't let us return bare pointers, but we can return ints just fine.
return reinterpret_cast<uintptr_t>(self.indices());
}))
.function("positions", optional_override([](SkVertices::Builder& self)->uintptr_t /* SkPoint* */{
// Emscripten won't let us return bare pointers, but we can return ints just fine.
return reinterpret_cast<uintptr_t>(self.positions());
}))
.function("texCoords", optional_override([](SkVertices::Builder& self)->uintptr_t /* SkPoint* */{
// Emscripten won't let us return bare pointers, but we can return ints just fine.
return reinterpret_cast<uintptr_t>(self.texCoords());
}));
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)
.value("R8G8_unorm", SkColorType::kR8G8_unorm_SkColorType)
.value("A16_unorm", SkColorType::kA16_unorm_SkColorType)
.value("R16G16_unorm", SkColorType::kR16G16_unorm_SkColorType)
.value("A16_float", SkColorType::kA16_float_SkColorType)
.value("R16G16_float", SkColorType::kR16G16_float_SkColorType)
.value("R16G16B16A16_unorm", SkColorType::kR16G16B16A16_unorm_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);
enum_<SkTextEncoding>("TextEncoding")
.value("UTF8", SkTextEncoding::kUTF8)
.value("UTF16", SkTextEncoding::kUTF16)
.value("UTF32", SkTextEncoding::kUTF32)
.value("GlyphID", SkTextEncoding::kGlyphID);
enum_<SkTileMode>("TileMode")
.value("Clamp", SkTileMode::kClamp)
.value("Repeat", SkTileMode::kRepeat)
.value("Mirror", SkTileMode::kMirror)
.value("Decal", SkTileMode::kDecal);
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<ShapedTextOpts>("ShapedTextOpts")
.field("font", &ShapedTextOpts::font)
.field("leftToRight", &ShapedTextOpts::leftToRight)
.field("text", &ShapedTextOpts::text)
.field("width", &ShapedTextOpts::width);
value_object<SkRect>("SkRect")
.field("fLeft", &SkRect::fLeft)
.field("fTop", &SkRect::fTop)
.field("fRight", &SkRect::fRight)
.field("fBottom", &SkRect::fBottom);
value_object<SimpleRRect>("SkRRect")
.field("rect", &SimpleRRect::rect)
.field("rx1", &SimpleRRect::rx1)
.field("ry1", &SimpleRRect::ry1)
.field("rx2", &SimpleRRect::rx2)
.field("ry2", &SimpleRRect::ry2)
.field("rx3", &SimpleRRect::rx3)
.field("ry3", &SimpleRRect::ry3)
.field("rx4", &SimpleRRect::rx4)
.field("ry4", &SimpleRRect::ry4);
value_object<SkIRect>("SkIRect")
.field("fLeft", &SkIRect::fLeft)
.field("fTop", &SkIRect::fTop)
.field("fRight", &SkIRect::fRight)
.field("fBottom", &SkIRect::fBottom);
value_object<TonalColors>("TonalColors")
.field("ambient", &TonalColors::ambientColor)
.field("spot", &TonalColors::spotColor);
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);
// PosTan can be represented by [px, py, tx, ty]
value_array<PosTan>("PosTan")
.element(&PosTan::px)
.element(&PosTan::py)
.element(&PosTan::tx)
.element(&PosTan::ty);
// {"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);
value_object<StrokeOpts>("StrokeOpts")
.field("width", &StrokeOpts::width)
.field("miter_limit", &StrokeOpts::miter_limit)
.field("join", &StrokeOpts::join)
.field("cap", &StrokeOpts::cap)
.field("precision", &StrokeOpts::precision);
// Allows clients to supply a 1D array of 9 elements and the bindings
// will automatically turn it into a 3x3 2D matrix.
// e.g. path.transform([0,1,2,3,4,5,6,7,8])
// This is likely simpler for the client than exposing SkMatrix
// directly and requiring them to do a lot of .delete().
value_array<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", SK_ColorTRANSPARENT);
constant("RED", SK_ColorRED);
constant("BLUE", SK_ColorBLUE);
constant("YELLOW", SK_ColorYELLOW);
constant("CYAN", SK_ColorCYAN);
constant("BLACK", SK_ColorBLACK);
constant("WHITE", SK_ColorWHITE);
// TODO(?)
constant("MOVE_VERB", MOVE);
constant("LINE_VERB", LINE);
constant("QUAD_VERB", QUAD);
constant("CONIC_VERB", CONIC);
constant("CUBIC_VERB", CUBIC);
constant("CLOSE_VERB", CLOSE);
}