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skia / skia / main / . / modules / canvaskit / canvaskit_bindings.cpp
blob: 9e297446e23f0069378b71066e57962c341ef522 [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/codec/SkCodec.h"
#include "include/codec/SkEncodedImageFormat.h"
#include "include/core/SkBBHFactory.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkBlender.h"
#include "include/core/SkBlurTypes.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkData.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkImageGenerator.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkM44.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/SkPathUtils.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkPoint3.h"
#include "include/core/SkRRect.h"
#include "include/core/SkSamplingOptions.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSerialProcs.h"
#include "include/core/SkShader.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkStrokeRec.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/core/SkVertices.h"
#include "include/effects/Sk1DPathEffect.h"
#include "include/effects/Sk2DPathEffect.h"
#include "include/effects/SkCornerPathEffect.h"
#include "include/effects/SkDashPathEffect.h"
#include "include/effects/SkDiscretePathEffect.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkImageFilters.h"
#include "include/effects/SkLumaColorFilter.h"
#include "include/effects/SkPerlinNoiseShader.h"
#include "include/effects/SkRuntimeEffect.h"
#include "include/effects/SkTrimPathEffect.h"
#include "include/encode/SkJpegEncoder.h"
#include "include/encode/SkPngEncoder.h"
#include "include/encode/SkWebpEncoder.h"
#include "include/private/base/SkOnce.h"
#include "include/utils/SkParsePath.h"
#include "include/utils/SkShadowUtils.h"
#include "src/base/SkFloatBits.h"
#include "src/core/SkPathPriv.h"
#include "src/core/SkPathRaw.h"
#include "src/core/SkResourceCache.h"
#include "src/image/SkImage_Base.h"
#include <emscripten.h>
#include <emscripten/bind.h>
#include <emscripten/html5.h>
#include "modules/canvaskit/WasmCommon.h"
#if defined(CK_ENABLE_WEBGL) || defined(CK_ENABLE_WEBGPU)
#define ENABLE_GPU
#endif
#ifdef ENABLE_GPU
#include "include/gpu/GpuTypes.h"
#include "include/gpu/ganesh/GrDirectContext.h"
#include "include/gpu/ganesh/GrExternalTextureGenerator.h"
#include "include/gpu/ganesh/SkImageGanesh.h"
#include "include/gpu/ganesh/SkSurfaceGanesh.h"
#include "src/gpu/ganesh/GrCaps.h"
#endif // ENABLE_GPU
#ifdef CK_ENABLE_WEBGL
#include "include/gpu/ganesh/GrBackendSurface.h"
#include "include/gpu/ganesh/GrTypes.h"
#include "include/gpu/ganesh/gl/GrGLBackendSurface.h"
#include "include/gpu/ganesh/gl/GrGLDirectContext.h"
#include "include/gpu/ganesh/gl/GrGLInterface.h"
#include "include/gpu/ganesh/gl/GrGLMakeWebGLInterface.h"
#include "include/gpu/ganesh/gl/GrGLTypes.h"
#include "src/gpu/RefCntedCallback.h"
#include "src/gpu/ganesh/GrProxyProvider.h"
#include "src/gpu/ganesh/GrRecordingContextPriv.h"
#include "src/gpu/ganesh/gl/GrGLDefines.h"
#include <GLES2/gl2.h>
#endif // CK_ENABLE_WEBGL
#ifdef CK_ENABLE_WEBGPU
#include <emscripten/html5_webgpu.h>
#include <webgpu/webgpu.h>
#include <webgpu/webgpu_cpp.h>
#endif // CK_ENABLE_WEBGPU
#ifndef CK_NO_FONTS
#include "include/core/SkFont.h"
#include "include/core/SkFontMetrics.h"
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontTypes.h"
#include "src/ports/SkTypeface_FreeType.h"
#ifdef CK_INCLUDE_PARAGRAPH
#include "modules/skparagraph/include/Paragraph.h"
#endif // CK_INCLUDE_PARAGRAPH
#endif // CK_NO_FONTS
#ifdef CK_INCLUDE_PATHOPS
#include "include/pathops/SkPathOps.h"
#endif
#if defined(CK_INCLUDE_RUNTIME_EFFECT)
#include "include/sksl/SkSLDebugTrace.h"
#include "src/sksl/SkSLCompiler.h"
#include "src/sksl/tracing/SkSLDebugTracePriv.h"
#if defined(CK_DEBUG_TRACE_JSON)
#include "tools/sksltrace/SkSLTraceUtils.h"
#endif
#endif
#ifndef CK_NO_FONTS
#include "include/ports/SkFontMgr_data.h"
#endif
#if defined(CK_EMBED_FONT)
struct SkEmbeddedResource {
const uint8_t* data;
size_t size;
};
struct SkEmbeddedResourceHeader {
const SkEmbeddedResource* entries;
int count;
};
extern "C" const SkEmbeddedResourceHeader SK_EMBEDDED_FONTS;
#endif
#if defined(GPU_TEST_UTILS)
#error "This define should not be set, as it brings in test-only things and bloats codesize."
#endif
#if defined(SK_CODEC_DECODES_BMP)
#include "include/codec/SkBmpDecoder.h"
#endif
#if defined(SK_CODEC_DECODES_GIF)
#include "include/codec/SkGifDecoder.h"
#endif
#if defined(SK_CODEC_DECODES_ICO)
#include "include/codec/SkIcoDecoder.h"
#endif
#if defined(SK_CODEC_DECODES_JPEG)
#include "include/codec/SkJpegDecoder.h"
#endif
#if defined(SK_CODEC_DECODES_PNG)
#include "include/codec/SkPngDecoder.h"
#endif
#if defined(SK_CODEC_DECODES_WBMP)
#include "include/codec/SkWbmpDecoder.h"
#endif
#if defined(SK_CODEC_DECODES_WEBP)
#include "include/codec/SkWebpDecoder.h"
#endif
// We'd like clients to be able to compile in as many or few codecs as they want (e.g. codesize)
std::unique_ptr<SkCodec> DecodeImageData(sk_sp<SkData> data) {
if (data == nullptr) {
return nullptr;
}
// These codecs are arbitrarily ordered in alphabetical order.
#if defined(SK_CODEC_DECODES_BMP)
if (SkBmpDecoder::IsBmp(data->data(), data->size())) {
return SkBmpDecoder::Decode(data, nullptr);
}
#endif
#if defined(SK_CODEC_DECODES_GIF)
if (SkGifDecoder::IsGif(data->data(), data->size())) {
return SkGifDecoder::Decode(data, nullptr);
}
#endif
#if defined(SK_CODEC_DECODES_ICO)
if (SkIcoDecoder::IsIco(data->data(), data->size())) {
return SkIcoDecoder::Decode(data, nullptr);
}
#endif
#if defined(SK_CODEC_DECODES_JPEG)
if (SkJpegDecoder::IsJpeg(data->data(), data->size())) {
return SkJpegDecoder::Decode(data, nullptr);
}
#endif
#if defined(SK_CODEC_DECODES_PNG)
if (SkPngDecoder::IsPng(data->data(), data->size())) {
return SkPngDecoder::Decode(data, nullptr);
}
#endif
#if defined(SK_CODEC_DECODES_WBMP)
if (SkWbmpDecoder::IsWbmp(data->data(), data->size())) {
return SkWbmpDecoder::Decode(data, nullptr);
}
#endif
#if defined(SK_CODEC_DECODES_WEBP)
if (SkWebpDecoder::IsWebp(data->data(), data->size())) {
return SkWebpDecoder::Decode(data, nullptr);
}
#endif
return nullptr;
}
struct OptionalMatrix : SkMatrix {
OptionalMatrix(WASMPointerF32 mPtr) {
if (mPtr) {
const float* nineMatrixValues = reinterpret_cast<const float*>(mPtr);
this->set9(nineMatrixValues);
}
}
};
SkColor4f ptrToSkColor4f(WASMPointerF32 cPtr) {
float* fourFloats = reinterpret_cast<float*>(cPtr);
SkColor4f color;
memcpy(&color, fourFloats, 4 * sizeof(float));
return color;
}
SkRRect ptrToSkRRect(WASMPointerF32 fPtr) {
// In order, these floats should be 4 floats for the rectangle
// (left, top, right, bottom) and then 8 floats for the radii
// (upper left, upper right, lower right, lower left).
const float* twelveFloats = reinterpret_cast<const float*>(fPtr);
const SkRect rect = reinterpret_cast<const SkRect*>(twelveFloats)[0];
const SkVector* radiiValues = reinterpret_cast<const SkVector*>(twelveFloats + 4);
SkRRect rr;
rr.setRectRadii(rect, radiiValues);
return rr;
}
// Surface creation structs and helpers
struct SimpleImageInfo {
int width;
int height;
SkColorType colorType;
SkAlphaType alphaType;
sk_sp<SkColorSpace> colorSpace;
};
SkImageInfo toSkImageInfo(const SimpleImageInfo& sii) {
return SkImageInfo::Make(sii.width,
sii.height,
sii.colorType,
sii.alphaType,
sii.colorSpace ? sii.colorSpace : SkColorSpace::MakeSRGB());
}
#ifdef CK_ENABLE_WEBGL
// Set the pixel format based on the colortype.
// These degrees of freedom are removed from canvaskit only to keep the interface simpler.
struct ColorSettings {
ColorSettings(sk_sp<SkColorSpace> colorSpace) {
if (colorSpace == nullptr || colorSpace->isSRGB()) {
colorType = kRGBA_8888_SkColorType;
pixFormat = GR_GL_RGBA8;
} else {
colorType = kRGBA_F16_SkColorType;
pixFormat = GR_GL_RGBA16F;
}
}
SkColorType colorType;
GrGLenum pixFormat;
};
sk_sp<GrDirectContext> MakeGrContext() {
// We assume that any calls we make to GL for the remainder of this function will go to the
// desired WebGL Context.
// setup interface.
auto interface = GrGLInterfaces::MakeWebGL();
// setup context
return GrDirectContexts::MakeGL(interface);
}
sk_sp<SkSurface> MakeOnScreenGLSurface(sk_sp<GrDirectContext> dContext,
int width,
int height,
sk_sp<SkColorSpace> colorSpace,
int sampleCnt,
int stencil) {
// WebGL should already be clearing the color and stencil buffers, but do it again here to
// ensure Skia receives them in the expected state.
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearColor(0, 0, 0, 0);
glClearStencil(0);
glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
dContext->resetContext(kRenderTarget_GrGLBackendState | kMisc_GrGLBackendState);
// The on-screen canvas is FBO 0. Wrap it in a Skia render target so Skia can render to it.
GrGLFramebufferInfo info;
info.fFBOID = 0;
if (!colorSpace) {
colorSpace = SkColorSpace::MakeSRGB();
}
const auto colorSettings = ColorSettings(colorSpace);
info.fFormat = colorSettings.pixFormat;
auto target = GrBackendRenderTargets::MakeGL(width, height, sampleCnt, stencil, info);
sk_sp<SkSurface> surface(SkSurfaces::WrapBackendRenderTarget(dContext.get(),
target,
kBottomLeft_GrSurfaceOrigin,
colorSettings.colorType,
colorSpace,
nullptr));
return surface;
}
sk_sp<SkSurface> MakeOnScreenGLSurface(sk_sp<GrDirectContext> dContext,
int width,
int height,
sk_sp<SkColorSpace> colorSpace) {
GrGLint sampleCnt;
glGetIntegerv(GL_SAMPLES, &sampleCnt);
GrGLint stencil;
glGetIntegerv(GL_STENCIL_BITS, &stencil);
return MakeOnScreenGLSurface(dContext, width, height, colorSpace, sampleCnt, stencil);
}
sk_sp<SkSurface> MakeRenderTarget(sk_sp<GrDirectContext> dContext, int width, int height) {
SkImageInfo info = SkImageInfo::MakeN32(
width, height, SkAlphaType::kPremul_SkAlphaType, SkColorSpace::MakeSRGB());
sk_sp<SkSurface> surface(SkSurfaces::RenderTarget(dContext.get(),
skgpu::Budgeted::kYes,
info,
0,
kBottomLeft_GrSurfaceOrigin,
nullptr,
true));
return surface;
}
sk_sp<SkSurface> MakeRenderTarget(sk_sp<GrDirectContext> dContext, SimpleImageInfo sii) {
sk_sp<SkSurface> surface(SkSurfaces::RenderTarget(dContext.get(),
skgpu::Budgeted::kYes,
toSkImageInfo(sii),
0,
kBottomLeft_GrSurfaceOrigin,
nullptr,
true));
return surface;
}
#endif // CK_ENABLE_WEBGL
#ifdef CK_ENABLE_WEBGPU
sk_sp<GrDirectContext> MakeGrContext() {
GrContextOptions options;
wgpu::Device device = wgpu::Device::Acquire(emscripten_webgpu_get_device());
return GrDirectContext::MakeDawn(device, options);
}
sk_sp<SkSurface> MakeGPUTextureSurface(sk_sp<GrDirectContext> dContext,
uint32_t textureHandle,
uint32_t textureFormat,
int width,
int height,
sk_sp<SkColorSpace> colorSpace) {
if (!colorSpace) {
colorSpace = SkColorSpace::MakeSRGB();
}
wgpu::TextureFormat format = static_cast<wgpu::TextureFormat>(textureFormat);
wgpu::Texture texture(emscripten_webgpu_import_texture(textureHandle));
emscripten_webgpu_release_js_handle(textureHandle);
// GrDawnRenderTargetInfo currently only supports a 1-mip TextureView.
constexpr uint32_t mipLevelCount = 1;
constexpr uint32_t sampleCount = 1;
GrDawnTextureInfo info;
info.fTexture = texture;
info.fFormat = format;
info.fLevelCount = mipLevelCount;
GrBackendTexture target(width, height, info);
return SkSurfaces::WrapBackendTexture(
dContext.get(),
target,
kTopLeft_GrSurfaceOrigin,
sampleCount,
colorSpace->isSRGB() ? kRGBA_8888_SkColorType : kRGBA_F16_SkColorType,
colorSpace,
nullptr);
}
bool ReplaceBackendTexture(
SkSurface& surface, uint32_t textureHandle, uint32_t textureFormat, int width, int height) {
wgpu::TextureFormat format = static_cast<wgpu::TextureFormat>(textureFormat);
wgpu::Texture texture(emscripten_webgpu_import_texture(textureHandle));
emscripten_webgpu_release_js_handle(textureHandle);
GrDawnTextureInfo info;
info.fTexture = texture;
info.fFormat = format;
info.fLevelCount = 1;
// Use kDiscard_ContentChangeMode to discard the contents of the old backing texture. This not
// only avoids an unnecessary blit, we also don't support copying the contents of a swapchain
// texture due to the default GPUCanvasConfiguration usage bits we used when configuring the
// GPUCanvasContext in JS.
//
// The default usage bits only contain GPUTextureUsage.RENDER_ATTACHMENT. To support a copy we
// would need to also set GPUTextureUsage.TEXTURE_BINDING (to sample it in a shader) or
// GPUTextureUsage.COPY_SRC (for a copy command).
//
// See https://www.w3.org/TR/webgpu/#namespacedef-gputextureusage and
// https://www.w3.org/TR/webgpu/#dictdef-gpucanvasconfiguration.
GrBackendTexture target(width, height, info);
return surface.replaceBackendTexture(
target, kTopLeft_GrSurfaceOrigin, SkSurface::kDiscard_ContentChangeMode);
}
#endif // CK_ENABLE_WEBGPU
//========================================================================================
// 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 ApplyAddPath(SkPathBuilder& p,
const SkPath& newPath,
float scaleX,
float skewX,
float transX,
float skewY,
float scaleY,
float transY,
float pers0,
float pers1,
float pers2,
bool extendPath) {
SkMatrix m =
SkMatrix::MakeAll(scaleX, skewX, transX, skewY, scaleY, transY, pers0, pers1, pers2);
p.addPath(newPath, m, extendPath ? SkPath::kExtend_AddPathMode : SkPath::kAppend_AddPathMode);
}
void ApplyArcToTangent(SkPathBuilder& p, float x1, float y1, float x2, float y2, float radius) {
p.arcTo({x1, y1}, {x2, y2}, radius);
}
void ApplyArcToArcSize(SkPathBuilder& p,
float rx,
float ry,
float xAxisRotate,
bool useSmallArc,
bool ccw,
float x,
float y) {
auto arcSize =
useSmallArc ? SkPathBuilder::ArcSize::kSmall_ArcSize : SkPathBuilder::kLarge_ArcSize;
auto sweep = ccw ? SkPathDirection::kCCW : SkPathDirection::kCW;
p.arcTo({rx, ry}, xAxisRotate, arcSize, sweep, {x, y});
}
void ApplyRArcToArcSize(SkPathBuilder& p,
float rx,
float ry,
float xAxisRotate,
bool useSmallArc,
bool ccw,
float dx,
float dy) {
auto arcSize = useSmallArc ? SkPathBuilder::ArcSize::kSmall_ArcSize
: SkPathBuilder::ArcSize::kLarge_ArcSize;
auto sweep = ccw ? SkPathDirection::kCCW : SkPathDirection::kCW;
p.rArcTo({rx, ry}, xAxisRotate, arcSize, sweep, {dx, dy});
}
void ApplyClose(SkPathBuilder& p) { p.close(); }
void ApplyConicTo(SkPathBuilder& p, float x1, float y1, float x2, float y2, float w) {
p.conicTo({x1, y1}, {x2, y2}, w);
}
void ApplyRConicTo(SkPathBuilder& p, float dx1, float dy1, float dx2, float dy2, float w) {
p.rConicTo({dx1, dy1}, {dx2, dy2}, w);
}
void ApplyCubicTo(SkPathBuilder& p, float x1, float y1, float x2, float y2, float x3, float y3) {
p.cubicTo({x1, y1}, {x2, y2}, {x3, y3});
}
void ApplyRCubicTo(
SkPathBuilder& p, float dx1, float dy1, float dx2, float dy2, float dx3, float dy3) {
p.rCubicTo({dx1, dy1}, {dx2, dy2}, {dx3, dy3});
}
void ApplyLineTo(SkPathBuilder& p, float x, float y) { p.lineTo({x, y}); }
void ApplyRLineTo(SkPathBuilder& p, float dx, float dy) { p.rLineTo({dx, dy}); }
void ApplyMoveTo(SkPathBuilder& p, float x, float y) { p.moveTo({x, y}); }
void ApplyRMoveTo(SkPathBuilder& p, float dx, float dy) { p.rMoveTo({dx, dy}); }
void ApplyReset(SkPathBuilder& p) { p.reset(); }
void ApplyQuadTo(SkPathBuilder& p, float x1, float y1, float x2, float y2) {
p.quadTo({x1, y1}, {x2, y2});
}
void ApplyRQuadTo(SkPathBuilder& p, float dx1, float dy1, float dx2, float dy2) {
p.rQuadTo({dx1, dy1}, {dx2, dy2});
}
void ApplyTransform(SkPathBuilder& p,
float scaleX,
float skewX,
float transX,
float skewY,
float scaleY,
float transY,
float pers0,
float pers1,
float pers2) {
SkMatrix m =
SkMatrix::MakeAll(scaleX, skewX, transX, skewY, scaleY, transY, pers0, pers1, pers2);
p.transform(m);
}
#ifdef CK_INCLUDE_PATHOPS
SkPathOrNull MakeSimplified(const SkPath& path) {
if (auto result = Simplify(path)) {
return emscripten::val(result.value());
}
return emscripten::val::null();
}
SkPathOrNull MakePathFromOp(const SkPath& pathOne, const SkPath& pathTwo, SkPathOp op) {
if (auto result = Op(pathOne, pathTwo, op)) {
return emscripten::val(result.value());
}
return emscripten::val::null();
}
SkPathOrNull MakeAsWinding(const SkPath& self) {
if (auto result = AsWinding(self)) {
return emscripten::val(result.value());
}
return emscripten::val::null();
}
#endif
JSString ToSVGString(const SkPath& path) {
return emscripten::val(SkParsePath::ToSVGString(path).c_str());
}
SkPathOrNull MakePathFromSVGString(std::string str) {
if (auto path = SkParsePath::FromSVGString(str.c_str())) {
return emscripten::val(*path);
}
return emscripten::val::null();
}
bool CanInterpolate(const SkPath& path1, const SkPath& path2) {
return path1.isInterpolatable(path2);
}
SkPathOrNull MakePathFromInterpolation(const SkPath& path1, const SkPath& path2, float weight) {
if (!path1.isInterpolatable(path2)) {
return emscripten::val::null();
}
return emscripten::val(path1.makeInterpolate(path2, weight));
}
SkPath CopyPath(SkPath a) { return a; }
bool 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;
Float32Array ToCmds(const SkPath& path) {
std::vector<float> cmds;
for (auto [verb, pts, w] : SkPathPriv::Iterate(path)) {
switch (verb) {
case SkPathVerb::kMove:
cmds.insert(cmds.end(), {MOVE, pts[0].x(), pts[0].y()});
break;
case SkPathVerb::kLine:
cmds.insert(cmds.end(), {LINE, pts[1].x(), pts[1].y()});
break;
case SkPathVerb::kQuad:
cmds.insert(cmds.end(), {QUAD, pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y()});
break;
case SkPathVerb::kConic:
cmds.insert(cmds.end(),
{CONIC, pts[1].x(), pts[1].y(), pts[2].x(), pts[2].y(), *w});
break;
case SkPathVerb::kCubic:
cmds.insert(cmds.end(),
{CUBIC,
pts[1].x(),
pts[1].y(),
pts[2].x(),
pts[2].y(),
pts[3].x(),
pts[3].y()});
break;
case SkPathVerb::kClose:
cmds.push_back(CLOSE);
break;
}
}
return MakeTypedArray(cmds.size(), (const float*)cmds.data());
}
SkPathOrNull MakePathFromCmds(WASMPointerF32 cptr, int numCmds) {
const auto* cmds = reinterpret_cast<const float*>(cptr);
SkPathBuilder 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.detach());
}
SkPath MakePathFromVerbsPointsWeights(WASMPointerU8 verbsPtr,
int numVerbs,
WASMPointerF32 ptsPtr,
int numPts,
WASMPointerF32 wtsPtr,
int numWts) {
const SkPathVerb* verbs = reinterpret_cast<const SkPathVerb*>(verbsPtr);
const SkPoint* pts = reinterpret_cast<const SkPoint*>(ptsPtr);
const float* weights = reinterpret_cast<const float*>(wtsPtr);
return SkPath::Raw(SkSpan<const SkPoint>(pts, SkToSizeT(numPts)),
SkSpan<const SkPathVerb>(verbs, SkToSizeT(numVerbs)),
SkSpan<const float>(weights, SkToSizeT(numWts)),
SkPathFillType::kDefault);
}
void PathAddVerbsPointsWeights(SkPathBuilder& self,
WASMPointerU8 verbsPtr,
int numVerbs,
WASMPointerF32 ptsPtr,
int numPts,
WASMPointerF32 wtsPtr,
int numWts) {
const SkPathVerb* verbs = reinterpret_cast<const SkPathVerb*>(verbsPtr);
const SkPoint* pts = reinterpret_cast<const SkPoint*>(ptsPtr);
const float* weights = reinterpret_cast<const float*>(wtsPtr);
SkPathRaw raw = SkPathRaw{
SkSpan<const SkPoint>(pts, SkToSizeT(numPts)),
SkSpan<const SkPathVerb>(verbs, SkToSizeT(numVerbs)),
SkSpan<const float>(weights, SkToSizeT(numWts)),
};
self.addRaw(raw);
}
//========================================================================================
// Path Effects
//========================================================================================
SkPathOrNull MakeDashed(const SkPath& self, float on, float off, float phase) {
float intervals[] = {on, off};
auto pe = SkDashPathEffect::Make(intervals, phase);
if (!pe) {
SkDebugf("Invalid args to dash()\n");
return emscripten::val::null();
}
SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
SkPathBuilder pb;
if (pe->filterPath(&pb, self, &rec)) {
return emscripten::val(pb.detach());
}
SkDebugf("Could not make dashed path\n");
return emscripten::val::null();
}
SkPathOrNull MakeTrimmed(const SkPath& self, float startT, float 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 emscripten::val::null();
}
SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
SkPathBuilder pb;
if (pe->filterPath(&pb, self, &rec)) {
return emscripten::val(pb.detach());
}
SkDebugf("Could not trim path\n");
return emscripten::val::null();
}
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.
float width;
float miter_limit;
SkPaint::Join join;
SkPaint::Cap cap;
float precision;
};
SkPathOrNull MakeStroked(const SkPath& self, 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);
SkMatrix scale = SkMatrix::Scale(opts.precision, opts.precision);
SkPathBuilder pb;
if (skpathutils::FillPathWithPaint(self, p, &pb, nullptr, scale)) {
return emscripten::val(pb.detach());
}
return emscripten::val::null();
}
// This function is private, we call it in interface.js
void computeTonalColors(WASMPointerF32 cPtrAmbi, WASMPointerF32 cPtrSpot) {
// private methods accepting colors take pointers to floats already copied into wasm memory.
float* ambiFloats = reinterpret_cast<float*>(cPtrAmbi);
float* spotFloats = reinterpret_cast<float*>(cPtrSpot);
SkColor4f ambiColor = {ambiFloats[0], ambiFloats[1], ambiFloats[2], ambiFloats[3]};
SkColor4f spotColor = {spotFloats[0], spotFloats[1], spotFloats[2], spotFloats[3]};
// This function takes SkColor
SkColor resultAmbi, resultSpot;
SkShadowUtils::ComputeTonalColors(
ambiColor.toSkColor(), spotColor.toSkColor(), &resultAmbi, &resultSpot);
// Convert back to color4f
const SkColor4f ambi4f = SkColor4f::FromColor(resultAmbi);
const SkColor4f spot4f = SkColor4f::FromColor(resultSpot);
// Re-use the caller's allocated memory to hold the result.
memcpy(ambiFloats, ambi4f.vec(), 4 * sizeof(float));
memcpy(spotFloats, spot4f.vec(), 4 * sizeof(float));
}
#ifdef CK_INCLUDE_RUNTIME_EFFECT
struct RuntimeEffectUniform {
int columns;
int rows;
int slot; // the index into the uniforms array that this uniform begins.
bool isInteger;
};
RuntimeEffectUniform fromUniform(const SkRuntimeEffect::Uniform& u) {
RuntimeEffectUniform su;
su.rows = u.count; // arrayLength
su.columns = 1;
su.isInteger = false;
using Type = SkRuntimeEffect::Uniform::Type;
switch (u.type) {
case Type::kFloat:
break;
case Type::kFloat2:
su.columns = 2;
break;
case Type::kFloat3:
su.columns = 3;
break;
case Type::kFloat4:
su.columns = 4;
break;
case Type::kFloat2x2:
su.columns = 2;
su.rows *= 2;
break;
case Type::kFloat3x3:
su.columns = 3;
su.rows *= 3;
break;
case Type::kFloat4x4:
su.columns = 4;
su.rows *= 4;
break;
case Type::kInt:
su.isInteger = true;
break;
case Type::kInt2:
su.columns = 2;
su.isInteger = true;
break;
case Type::kInt3:
su.columns = 3;
su.isInteger = true;
break;
case Type::kInt4:
su.columns = 4;
su.isInteger = true;
break;
}
su.slot = u.offset / sizeof(float);
return su;
}
void castUniforms(void* data, size_t dataLen, const SkRuntimeEffect& effect) {
if (dataLen != effect.uniformSize()) {
// Incorrect number of uniforms. Our code below could read/write off the end of the buffer.
// However, shader creation is going to fail anyway, so just do nothing.
return;
}
float* fltData = reinterpret_cast<float*>(data);
for (const auto& u : effect.uniforms()) {
RuntimeEffectUniform reu = fromUniform(u);
if (reu.isInteger) {
// The SkSL is expecting integers in the uniform data
for (int i = 0; i < reu.columns * reu.rows; ++i) {
int numAsInt = static_cast<int>(fltData[reu.slot + i]);
fltData[reu.slot + i] = SkBits2Float(numAsInt);
}
}
}
}
#endif
sk_sp<SkData> alwaysSaveTypefaceBytes(SkTypeface* face, void*) {
return face->serialize(SkTypeface::SerializeBehavior::kDoIncludeData);
}
// 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<SkContourMeasure>(SkContourMeasure* ptr) {}
template <> void raw_destructor<SkVertices>(SkVertices* ptr) {}
#ifndef CK_NO_FONTS
template <> void raw_destructor<SkTextBlob>(SkTextBlob* ptr) {}
template <> void raw_destructor<SkTypeface>(SkTypeface* ptr) {}
#endif
} // namespace internal
} // namespace emscripten
// toBytes returns a Uint8Array that has a copy of the data in the given SkData.
Uint8Array toBytes(sk_sp<SkData> data) {
// By making the copy using the JS transliteration, we don't risk the SkData object being
// cleaned up before we make the copy.
return emscripten::val(
// https://emscripten.org/docs/porting/connecting_cpp_and_javascript/embind.html#memory-views
typed_memory_view(data->size(), data->bytes()))
.call<Uint8Array>("slice"); // slice with no args makes a copy of the memory view.
}
#ifdef CK_ENABLE_WEBGL
// We need to call into the JS side of things to free webGL contexts. This object will be called
// with _setTextureCleanup after CanvasKit loads. The object will have one attribute,
// a function called deleteTexture that takes two ints.
JSObject textureCleanup = emscripten::val::null();
struct TextureReleaseContext {
// This refers to which webgl context, i.e. which surface, owns the texture. We need this
// to route the deleteTexture to the right context.
uint32_t webglHandle;
// This refers to the index of the texture in the complete list of textures.
uint32_t texHandle;
};
void deleteJSTexture(SkImages::ReleaseContext rc) {
auto ctx = reinterpret_cast<TextureReleaseContext*>(rc);
textureCleanup.call<void>("deleteTexture", ctx->webglHandle, ctx->texHandle);
delete ctx;
}
class ExternalWebGLTexture : public GrExternalTexture {
public:
ExternalWebGLTexture(GrBackendTexture backendTexture,
uint32_t textureHandle,
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE context)
: fBackendTexture(backendTexture)
, fWebglHandle(context)
, fTextureHandle(textureHandle) {}
GrBackendTexture getBackendTexture() override { return fBackendTexture; }
void dispose() override {
textureCleanup.call<void>("deleteTexture", fWebglHandle, fTextureHandle);
}
private:
GrBackendTexture fBackendTexture;
// This refers to which webgl context, i.e. which surface, owns the texture. We need this
// to route the deleteTexture to the right context.
uint32_t fWebglHandle;
// This refers to the index of the texture in the complete list of textures.
uint32_t fTextureHandle;
};
class WebGLTextureImageGenerator : public GrExternalTextureGenerator {
public:
WebGLTextureImageGenerator(SkImageInfo ii, JSObject callbackObj)
: GrExternalTextureGenerator(ii), fCallback(callbackObj) {}
~WebGLTextureImageGenerator() override {
// This cleans up the associated TextureSource that is used to make the texture
// (i.e. "makeTexture" below). We expect this destructor to be called when the
// SkImage that this Generator belongs to is destroyed.
fCallback.call<void>("freeSrc");
}
std::unique_ptr<GrExternalTexture> generateExternalTexture(GrRecordingContext* ctx,
skgpu::Mipmapped) override {
GrGLTextureInfo glInfo;
// This callback is defined in webgl.js
glInfo.fID = fCallback.call<uint32_t>("makeTexture");
// The format and target should match how we make the texture on the JS side
// See the implementation of the makeTexture function.
glInfo.fFormat = GR_GL_RGBA8;
glInfo.fTarget = GR_GL_TEXTURE_2D;
// These textures are unlikely to actually have mipmaps generated (we might even be on
// WebGL 1, where Skia doesn't support mipmapping at all). Therefore, we ignore any request
// for mipmapping here. See: b/338095525
auto backendTexture = GrBackendTextures::MakeGL(
fInfo.width(), fInfo.height(), skgpu::Mipmapped::kNo, glInfo);
// In order to bind the image source to the texture, makeTexture has changed which
// texture is "in focus" for the WebGL context.
GrAsDirectContext(ctx)->resetContext(kTextureBinding_GrGLBackendState);
return std::make_unique<ExternalWebGLTexture>(
backendTexture, glInfo.fID, emscripten_webgl_get_current_context());
}
private:
JSObject fCallback;
};
// callbackObj has two functions in it, one to create a texture "makeTexture" and one to clean up
// the underlying texture source "freeSrc". This way, we can create WebGL textures for each
// surface/WebGLContext that the image is used on (we cannot share WebGLTextures across contexts).
sk_sp<SkImage> MakeImageFromGenerator(SimpleImageInfo ii, JSObject callbackObj) {
auto gen = std::make_unique<WebGLTextureImageGenerator>(toSkImageInfo(ii), callbackObj);
return SkImages::DeferredFromTextureGenerator(std::move(gen));
}
#endif // CK_ENABLE_WEBGL
static Uint8Array encodeImage(GrDirectContext* dContext,
sk_sp<SkImage> img,
SkEncodedImageFormat fmt,
int quality) {
sk_sp<SkData> data = nullptr;
if (fmt == SkEncodedImageFormat::kJPEG) {
SkJpegEncoder::Options opts;
opts.fQuality = quality;
data = SkJpegEncoder::Encode(dContext, img.get(), opts);
} else if (fmt == SkEncodedImageFormat::kPNG) {
data = SkPngEncoder::Encode(dContext, img.get(), {});
} else {
SkWebpEncoder::Options opts;
if (quality >= 100) {
opts.fCompression = SkWebpEncoder::Compression::kLossless;
opts.fQuality = 75; // This is effort to compress
} else {
opts.fCompression = SkWebpEncoder::Compression::kLossy;
opts.fQuality = quality;
}
data = SkWebpEncoder::Encode(dContext, img.get(), opts);
}
if (!data) {
return emscripten::val::null();
}
return toBytes(data);
}
EMSCRIPTEN_BINDINGS(Skia) {
#ifdef ENABLE_GPU
constant("gpu", true);
function("_MakeGrContext", &MakeGrContext);
#endif // ENABLE_GPU
#ifdef CK_ENABLE_WEBGL
constant("webgl", true);
function("_MakeOnScreenGLSurface",
select_overload<sk_sp<SkSurface>(
sk_sp<GrDirectContext>, int, int, sk_sp<SkColorSpace>)>(
&MakeOnScreenGLSurface));
function("_MakeOnScreenGLSurface",
select_overload<sk_sp<SkSurface>(
sk_sp<GrDirectContext>, int, int, sk_sp<SkColorSpace>, int, int)>(
&MakeOnScreenGLSurface));
function(
"_MakeRenderTargetWH",
select_overload<sk_sp<SkSurface>(sk_sp<GrDirectContext>, int, int)>(&MakeRenderTarget));
function("_MakeRenderTargetII",
select_overload<sk_sp<SkSurface>(sk_sp<GrDirectContext>, SimpleImageInfo)>(
&MakeRenderTarget));
#endif // CK_ENABLE_WEBGL
#ifdef CK_ENABLE_WEBGPU
constant("webgpu", true);
function("_MakeGPUTextureSurface", &MakeGPUTextureSurface);
#endif // CK_ENABLE_WEBGPU
function("getDecodeCacheLimitBytes", &SkResourceCache::GetTotalByteLimit);
function("setDecodeCacheLimitBytes", &SkResourceCache::SetTotalByteLimit);
function("getDecodeCacheUsedBytes", &SkResourceCache::GetTotalBytesUsed);
function("_computeTonalColors", &computeTonalColors);
function("_decodeAnimatedImage",
optional_override([](WASMPointerU8 iptr, size_t length) -> sk_sp<SkAnimatedImage> {
uint8_t* imgData = reinterpret_cast<uint8_t*>(iptr);
auto bytes = SkData::MakeFromMalloc(imgData, length);
auto codec = DecodeImageData(bytes);
if (codec == nullptr) {
return nullptr;
}
auto aCodec = SkAndroidCodec::MakeFromCodec(std::move(codec));
if (aCodec == nullptr) {
return nullptr;
}
return SkAnimatedImage::Make(std::move(aCodec));
}),
allow_raw_pointers());
function("_decodeImage",
optional_override([](WASMPointerU8 iptr, size_t length) -> sk_sp<SkImage> {
uint8_t* imgData = reinterpret_cast<uint8_t*>(iptr);
auto bytes = SkData::MakeFromMalloc(imgData, length);
auto codec = DecodeImageData(bytes);
if (codec == nullptr) {
return nullptr;
}
return std::get<0>(codec->getImage());
}),
allow_raw_pointers());
// These won't be called directly, there are corresponding JS helpers to deal with arrays.
function("_MakeImage",
optional_override([](SimpleImageInfo ii, WASMPointerU8 pPtr, int plen, size_t rowBytes)
-> sk_sp<SkImage> {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo info = toSkImageInfo(ii);
sk_sp<SkData> pixelData = SkData::MakeFromMalloc(pixels, plen);
return SkImages::RasterFromData(info, pixelData, rowBytes);
}),
allow_raw_pointers());
function("_getShadowLocalBounds",
optional_override([](WASMPointerF32 ctmPtr,
const SkPath& path,
WASMPointerF32 zPlaneParamPtr,
WASMPointerF32 lightPosPtr,
float lightRadius,
uint32_t flags,
WASMPointerF32 outPtr) -> bool {
SkMatrix ctm;
const float* nineMatrixValues = reinterpret_cast<const float*>(ctmPtr);
ctm.set9(nineMatrixValues);
const SkVector3* zPlaneParams = reinterpret_cast<const SkVector3*>(zPlaneParamPtr);
const SkVector3* lightPos = reinterpret_cast<const SkVector3*>(lightPosPtr);
SkRect* outputBounds = reinterpret_cast<SkRect*>(outPtr);
return SkShadowUtils::GetLocalBounds(
ctm, path, *zPlaneParams, *lightPos, lightRadius, flags, outputBounds);
}));
#ifdef CK_SERIALIZE_SKP
function("_MakePicture",
optional_override([](WASMPointerU8 dPtr, size_t bytes) -> sk_sp<SkPicture> {
uint8_t* d = reinterpret_cast<uint8_t*>(dPtr);
sk_sp<SkData> data = SkData::MakeFromMalloc(d, bytes);
#ifndef CK_NO_FONTS
// Be sure we can process the data stored when serializing the SkPicture.
static SkOnce once;
once([] {
SkTypeface::Register(SkTypeface_FreeType::FactoryId,
SkTypeface_FreeType::MakeFromStream);
});
#endif
SkDeserialProcs dp;
dp.fImageDataProc = [](sk_sp<SkData> bytes,
std::optional<SkAlphaType> at,
void* ctx) -> sk_sp<SkImage> {
auto codec = DecodeImageData(bytes);
if (codec == nullptr) {
return nullptr;
}
SkImageInfo info = codec->getInfo();
if (at.has_value()) {
info = info.makeAlphaType(*at);
} else if (kUnpremul_SkAlphaType == info.alphaType()) {
// Otherwise, prefer premul over unpremul (this produces better filtering
// in general)
info = info.makeAlphaType(kPremul_SkAlphaType);
}
return std::get<0>(codec->getImage(info));
};
return SkPicture::MakeFromData(data.get(), nullptr);
}),
allow_raw_pointers());
#endif
#ifdef ENABLE_GPU
class_<GrDirectContext>("GrDirectContext")
.smart_ptr<sk_sp<GrDirectContext>>("sk_sp<GrDirectContext>")
.function("_getResourceCacheLimitBytes",
optional_override([](GrDirectContext& self) -> size_t {
int maxResources = 0; // ignored
size_t currMax = 0;
self.getResourceCacheLimits(&maxResources, &currMax);
return currMax;
}))
.function("_getResourceCacheUsageBytes",
optional_override([](GrDirectContext& self) -> size_t {
int usedResources = 0; // ignored
size_t currUsage = 0;
self.getResourceCacheUsage(&usedResources, &currUsage);
return currUsage;
}))
.function("_releaseResourcesAndAbandonContext",
&GrDirectContext::releaseResourcesAndAbandonContext)
.function("_setResourceCacheLimitBytes",
optional_override([](GrDirectContext& self, size_t maxResourceBytes) -> void {
int maxResources = 0;
size_t currMax = 0; // ignored
self.getResourceCacheLimits(&maxResources, &currMax);
self.setResourceCacheLimits(maxResources, maxResourceBytes);
}));
#endif // ENABLE_GPU
#ifdef CK_ENABLE_WEBGL
// This allows us to give the C++ code a JS callback to delete textures that
// have been passed in via makeImageFromTexture and makeImageFromTextureSource.
function("_setTextureCleanup",
optional_override([](JSObject callbackObj) -> void { textureCleanup = callbackObj; }));
#endif
class_<SkAnimatedImage>("AnimatedImage")
.smart_ptr<sk_sp<SkAnimatedImage>>("sk_sp<AnimatedImage>")
.function("currentFrameDuration", &SkAnimatedImage::currentFrameDuration)
.function("decodeNextFrame", &SkAnimatedImage::decodeNextFrame)
.function("getFrameCount", &SkAnimatedImage::getFrameCount)
.function("getRepetitionCount", &SkAnimatedImage::getRepetitionCount)
.function("height", optional_override([](SkAnimatedImage& self) -> int32_t {
// getBounds returns an SkRect, but internally, the width and height are
// ints.
return SkScalarFloorToInt(self.getBounds().height());
}))
.function("makeImageAtCurrentFrame", &SkAnimatedImage::getCurrentFrame)
.function("reset", &SkAnimatedImage::reset)
.function("width", optional_override([](SkAnimatedImage& self) -> int32_t {
return SkScalarFloorToInt(self.getBounds().width());
}));
class_<SkBlender>("Blender")
.smart_ptr<sk_sp<SkBlender>>("sk_sp<Blender>")
.class_function("Mode", &SkBlender::Mode);
class_<SkCanvas>("Canvas")
.constructor<>()
.constructor<float, float>()
.function("_clear", optional_override([](SkCanvas& self, WASMPointerF32 cPtr) {
self.clear(ptrToSkColor4f(cPtr));
}))
.function("clipPath",
select_overload<void(const SkPath&, SkClipOp, bool)>(&SkCanvas::clipPath))
.function(
"_clipRRect",
optional_override(
[](SkCanvas& self, WASMPointerF32 fPtr, SkClipOp op, bool doAntiAlias) {
self.clipRRect(ptrToSkRRect(fPtr), op, doAntiAlias);
}))
.function(
"_clipRect",
optional_override(
[](SkCanvas& self, WASMPointerF32 fPtr, SkClipOp op, bool doAntiAlias) {
const SkRect* rect = reinterpret_cast<const SkRect*>(fPtr);
self.clipRect(*rect, op, doAntiAlias);
}))
.function("_concat", optional_override([](SkCanvas& self, WASMPointerF32 mPtr) {
// TODO(skbug.com/40041444): make the JS side be column major.
const float* sixteenMatrixValues = reinterpret_cast<const float*>(mPtr);
SkM44 m = SkM44::RowMajor(sixteenMatrixValues);
self.concat(m);
}))
.function("_drawArc",
optional_override([](SkCanvas& self,
WASMPointerF32 fPtr,
float startAngle,
float sweepAngle,
bool useCenter,
const SkPaint& paint) {
const SkRect* oval = reinterpret_cast<const SkRect*>(fPtr);
self.drawArc(*oval, startAngle, sweepAngle, useCenter, paint);
}))
.function("_drawAtlasOptions",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& atlas,
WASMPointerF32 xptr,
WASMPointerF32 rptr,
WASMPointerU32 cptr,
int count,
SkBlendMode mode,
SkFilterMode filter,
SkMipmapMode mipmap,
const SkPaint* paint) -> void {
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);
}
SkSamplingOptions sampling(filter, mipmap);
self.drawAtlas(atlas.get(),
{dstXforms, count},
{srcRects, count},
{colors, colors ? count : 0},
mode,
sampling,
nullptr,
paint);
}),
allow_raw_pointers())
.function("_drawAtlasCubic",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& atlas,
WASMPointerF32 xptr,
WASMPointerF32 rptr,
WASMPointerU32 cptr,
int count,
SkBlendMode mode,
float B,
float C,
const SkPaint* paint) -> void {
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);
}
SkSamplingOptions sampling({B, C});
self.drawAtlas(atlas.get(),
{dstXforms, count},
{srcRects, count},
{colors, colors ? count : 0},
mode,
sampling,
nullptr,
paint);
}),
allow_raw_pointers())
.function("_drawCircle",
select_overload<void(float, float, float, const SkPaint& paint)>(
&SkCanvas::drawCircle))
.function("_drawColor", optional_override([](SkCanvas& self, WASMPointerF32 cPtr) {
self.drawColor(ptrToSkColor4f(cPtr));
}))
.function("_drawColor",
optional_override([](SkCanvas& self, WASMPointerF32 cPtr, SkBlendMode mode) {
self.drawColor(ptrToSkColor4f(cPtr), mode);
}))
.function("_drawColorInt",
optional_override([](SkCanvas& self, SkColor color, SkBlendMode mode) {
self.drawColor(color, mode);
}))
.function("_drawDRRect",
optional_override([](SkCanvas& self,
WASMPointerF32 outerPtr,
WASMPointerF32 innerPtr,
const SkPaint& paint) {
self.drawDRRect(ptrToSkRRect(outerPtr), ptrToSkRRect(innerPtr), paint);
}))
.function("_drawGlyphs",
optional_override([](SkCanvas& self,
int count,
WASMPointerU16 glyphs,
WASMPointerF32 positions,
float x,
float y,
const SkFont& font,
const SkPaint& paint) -> void {
self.drawGlyphs({reinterpret_cast<const uint16_t*>(glyphs), count},
{reinterpret_cast<const SkPoint*>(positions), count},
{x, y},
font,
paint);
}))
// TODO: deprecate this version, and require sampling
.function("_drawImage",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& image,
float x,
float y,
const SkPaint* paint) {
self.drawImage(image.get(), x, y, SkSamplingOptions(), paint);
}),
allow_raw_pointers())
.function("_drawImageCubic",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& img,
float left,
float top,
float B,
float C, // See SkSamplingOptions.h for docs.
const SkPaint* paint) -> void {
self.drawImage(img.get(), left, top, SkSamplingOptions({B, C}), paint);
}),
allow_raw_pointers())
.function("_drawImageOptions",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& img,
float left,
float top,
SkFilterMode filter,
SkMipmapMode mipmap,
const SkPaint* paint) -> void {
self.drawImage(img.get(), left, top, {filter, mipmap}, paint);
}),
allow_raw_pointers())
.function("_drawImageNine",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& image,
WASMPointerU32 centerPtr,
WASMPointerF32 dstPtr,
SkFilterMode filter,
const SkPaint* paint) -> void {
const SkIRect* center = reinterpret_cast<const SkIRect*>(centerPtr);
const SkRect* dst = reinterpret_cast<const SkRect*>(dstPtr);
self.drawImageNine(image.get(), *center, *dst, filter, paint);
}),
allow_raw_pointers())
// TODO: deprecate this version, and require sampling
.function("_drawImageRect",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& image,
WASMPointerF32 srcPtr,
WASMPointerF32 dstPtr,
const SkPaint* paint,
bool fastSample) -> void {
const SkRect* src = reinterpret_cast<const SkRect*>(srcPtr);
const SkRect* dst = reinterpret_cast<const SkRect*>(dstPtr);
self.drawImageRect(image,
*src,
*dst,
SkSamplingOptions(),
paint,
fastSample ? SkCanvas::kFast_SrcRectConstraint
: SkCanvas::kStrict_SrcRectConstraint);
}),
allow_raw_pointers())
.function("_drawImageRectCubic",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& image,
WASMPointerF32 srcPtr,
WASMPointerF32 dstPtr,
float B,
float C, // See SkSamplingOptions.h for docs.
const SkPaint* paint) -> void {
const SkRect* src = reinterpret_cast<const SkRect*>(srcPtr);
const SkRect* dst = reinterpret_cast<const SkRect*>(dstPtr);
auto constraint =
SkCanvas::kStrict_SrcRectConstraint; // TODO: get from caller
self.drawImageRect(image.get(),
*src,
*dst,
SkSamplingOptions({B, C}),
paint,
constraint);
}),
allow_raw_pointers())
.function("_drawImageRectOptions",
optional_override([](SkCanvas& self,
const sk_sp<SkImage>& image,
WASMPointerF32 srcPtr,
WASMPointerF32 dstPtr,
SkFilterMode filter,
SkMipmapMode mipmap,
const SkPaint* paint) -> void {
const SkRect* src = reinterpret_cast<const SkRect*>(srcPtr);
const SkRect* dst = reinterpret_cast<const SkRect*>(dstPtr);
auto constraint =
SkCanvas::kStrict_SrcRectConstraint; // TODO: get from caller
self.drawImageRect(
image.get(), *src, *dst, {filter, mipmap}, paint, constraint);
}),
allow_raw_pointers())
.function("_drawLine",
select_overload<void(float, float, float, float, const SkPaint&)>(
&SkCanvas::drawLine))
.function(
"_drawOval",
optional_override(
[](SkCanvas& self, WASMPointerF32 fPtr, const SkPaint& paint) -> void {
const SkRect* oval = reinterpret_cast<const SkRect*>(fPtr);
self.drawOval(*oval, paint);
}))
.function("_drawPaint", &SkCanvas::drawPaint)
#ifdef CK_INCLUDE_PARAGRAPH
.function("_drawParagraph",
optional_override(
[](SkCanvas& self, skia::textlayout::Paragraph* p, float x, float y) {
p->paint(&self, x, y);
}),
allow_raw_pointers())
#endif
.function("_drawPath", &SkCanvas::drawPath)
.function("_drawPatch",
optional_override([](SkCanvas& self,
WASMPointerF32 cubics,
WASMPointerU32 colors,
WASMPointerF32 texs,
SkBlendMode mode,
const SkPaint& paint) -> void {
self.drawPatch(reinterpret_cast<const SkPoint*>(cubics),
reinterpret_cast<const SkColor*>(colors),
reinterpret_cast<const SkPoint*>(texs),
mode,
paint);
}))
// 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("_drawPoints",
optional_override([](SkCanvas& self,
SkCanvas::PointMode mode,
WASMPointerF32 pptr,
int count,
SkPaint& paint) -> void {
const SkPoint* pts = reinterpret_cast<const SkPoint*>(pptr);
self.drawPoints(mode, {pts, count}, paint);
}))
.function("_drawRRect",
optional_override(
[](SkCanvas& self, WASMPointerF32 fPtr, const SkPaint& paint) {
self.drawRRect(ptrToSkRRect(fPtr), paint);
}))
.function(
"_drawRect",
optional_override(
[](SkCanvas& self, WASMPointerF32 fPtr, const SkPaint& paint) -> void {
const SkRect* rect = reinterpret_cast<const SkRect*>(fPtr);
self.drawRect(*rect, paint);
}))
.function("_drawRect4f",
optional_override([](SkCanvas& self,
float left,
float top,
float right,
float bottom,
const SkPaint& paint) -> void {
const SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
self.drawRect(rect, paint);
}))
.function("_drawShadow",
optional_override([](SkCanvas& self,
const SkPath& path,
WASMPointerF32 zPlaneParamPtr,
WASMPointerF32 lightPosPtr,
float lightRadius,
WASMPointerF32 ambientColorPtr,
WASMPointerF32 spotColorPtr,
uint32_t flags) {
const SkVector3* zPlaneParams =
reinterpret_cast<const SkVector3*>(zPlaneParamPtr);
const SkVector3* lightPos =
reinterpret_cast<const SkVector3*>(lightPosPtr);
SkShadowUtils::DrawShadow(&self,
path,
*zPlaneParams,
*lightPos,
lightRadius,
ptrToSkColor4f(ambientColorPtr).toSkColor(),
ptrToSkColor4f(spotColorPtr).toSkColor(),
flags);
}))
#ifndef CK_NO_FONTS
.function("_drawSimpleText",
optional_override([](SkCanvas& self,
WASMPointerU8 sptr,
size_t len,
float x,
float y,
const SkFont& font,
const SkPaint& paint) {
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>&, float, float, const SkPaint&)>(
&SkCanvas::drawTextBlob))
#endif
.function("_drawVertices",
select_overload<void(const sk_sp<SkVertices>&, SkBlendMode, const SkPaint&)>(
&SkCanvas::drawVertices))
.function("_getDeviceClipBounds",
optional_override([](const SkCanvas& self, WASMPointerI32 iPtr) {
SkIRect* outputRect = reinterpret_cast<SkIRect*>(iPtr);
if (!outputRect) {
return; // output pointer cannot be null
}
self.getDeviceClipBounds(outputRect);
}))
.function("_quickReject",
optional_override([](const SkCanvas& self, WASMPointerF32 fPtr) -> bool {
const SkRect* rect = reinterpret_cast<const SkRect*>(fPtr);
return self.quickReject(*rect);
}))
// 4x4 matrix functions
// Just like with getTotalMatrix, we allocate the buffer for the 16 floats to go in from
// interface.js, so it can also free them when its done.
.function("_getLocalToDevice",
optional_override([](const SkCanvas& self, WASMPointerF32 mPtr) {
float* sixteenMatrixValues = reinterpret_cast<float*>(mPtr);
if (!sixteenMatrixValues) {
return; // matrix cannot be null
}
SkM44 m = self.getLocalToDevice();
m.getRowMajor(sixteenMatrixValues);
}))
.function("getSaveCount", &SkCanvas::getSaveCount)
// We allocate room for the matrix from the JS side and free it there so as to not have
// an awkward moment where we malloc something here and "just know" to free it on the
// JS side.
.function("_getTotalMatrix",
optional_override([](const SkCanvas& self, WASMPointerU8 mPtr) {
float* nineMatrixValues = reinterpret_cast<float*>(mPtr);
if (!nineMatrixValues) {
return; // matrix cannot be null
}
SkMatrix m = self.getTotalMatrix();
m.get9(nineMatrixValues);
}))
.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,
WASMPointerU8 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);
}),
allow_raw_pointers())
.function("restore", &SkCanvas::restore)
.function("restoreToCount", &SkCanvas::restoreToCount)
.function("rotate", select_overload<void(float, float, float)>(&SkCanvas::rotate))
.function("save", &SkCanvas::save)
.function("_saveLayer",
optional_override([](SkCanvas& self,
const SkPaint* p,
WASMPointerF32 fPtr,
const SkImageFilter* backdrop,
SkCanvas::SaveLayerFlags flags,
SkTileMode backdropFilterTileMode) -> int {
SkRect* bounds = reinterpret_cast<SkRect*>(fPtr);
return self.saveLayer(SkCanvas::SaveLayerRec(
bounds, p, backdrop, backdropFilterTileMode, nullptr, flags));
}),
allow_raw_pointers())
.function("saveLayerPaint",
optional_override([](SkCanvas& self, const SkPaint& p) -> int {
return self.saveLayer(SkCanvas::SaveLayerRec(nullptr, &p, 0));
}))
.function("scale", &SkCanvas::scale)
.function("skew", &SkCanvas::skew)
.function("translate", &SkCanvas::translate)
.function("_writePixels",
optional_override([](SkCanvas& self,
SimpleImageInfo di,
WASMPointerU8 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>("ColorFilter")
.smart_ptr<sk_sp<SkColorFilter>>("sk_sp<ColorFilter>>")
.class_function(
"_MakeBlend",
optional_override([](WASMPointerF32 cPtr,
SkBlendMode mode,
sk_sp<SkColorSpace> colorSpace) -> sk_sp<SkColorFilter> {
return SkColorFilters::Blend(ptrToSkColor4f(cPtr), colorSpace, mode);
}))
.class_function("MakeCompose", &SkColorFilters::Compose)
.class_function("MakeLerp", &SkColorFilters::Lerp)
.class_function("MakeLinearToSRGBGamma", &SkColorFilters::LinearToSRGBGamma)
.class_function("_makeMatrix", optional_override([](WASMPointerF32 fPtr) {
float* twentyFloats = reinterpret_cast<float*>(fPtr);
return SkColorFilters::Matrix(twentyFloats);
}))
.class_function("MakeSRGBToLinearGamma", &SkColorFilters::SRGBToLinearGamma)
.class_function("MakeLuma", &SkLumaColorFilter::Make);
class_<SkContourMeasureIter>("ContourMeasureIter")
.constructor<const SkPath&, bool, float>()
.function("next", &SkContourMeasureIter::next);
class_<SkContourMeasure>("ContourMeasure")
.smart_ptr<sk_sp<SkContourMeasure>>("sk_sp<ContourMeasure>>")
.function("_getPosTan",
optional_override([](SkContourMeasure& self,
float distance,
WASMPointerF32 oPtr) -> void {
SkPoint* pointAndVector = reinterpret_cast<SkPoint*>(oPtr);
if (!self.getPosTan(distance, pointAndVector, pointAndVector + 1)) {
SkDebugf("zero-length path in getPosTan\n");
}
}))
.function("getSegment",
optional_override([](SkContourMeasure& self,
float startD,
float stopD,
bool startWithMoveTo) -> SkPath {
SkPath p;
bool ok = self.getSegment(startD, stopD, &p, startWithMoveTo);
if (ok) {
return p;
}
return SkPath();
}))
.function("isClosed", &SkContourMeasure::isClosed)
.function("length", &SkContourMeasure::length);
#ifndef CK_NO_FONTS
class_<SkFont>("Font")
.constructor<>()
.constructor<sk_sp<SkTypeface>>()
.constructor<sk_sp<SkTypeface>, float>()
.constructor<sk_sp<SkTypeface>, float, float, float>()
.function("_getGlyphWidthBounds",
optional_override([](SkFont& self,
WASMPointerU16 gPtr,
int numGlyphs,
WASMPointerF32 wPtr,
WASMPointerF32 rPtr,
SkPaint* paint) {
const SkGlyphID* glyphs = reinterpret_cast<const SkGlyphID*>(gPtr);
// On the JS side only one of these is set at a time for easier
// ergonomics.
SkRect* outputRects = reinterpret_cast<SkRect*>(rPtr);
float* outputWidths = reinterpret_cast<float*>(wPtr);
self.getWidthsBounds({glyphs, numGlyphs},
{outputWidths, outputWidths ? numGlyphs : 0},
{outputRects, outputRects ? numGlyphs : 0},
paint);
}),
allow_raw_pointers())
.function("_getGlyphIDs",
optional_override([](SkFont& self,
WASMPointerU8 sptr,
size_t strLen,
size_t expectedCodePoints,
WASMPointerU16 iPtr) -> int {
char* str = reinterpret_cast<char*>(sptr);
SkGlyphID* glyphIDs = reinterpret_cast<SkGlyphID*>(iPtr);
int actualCodePoints =
self.textToGlyphs(str,
strLen,
SkTextEncoding::kUTF8,
{glyphIDs, glyphIDs ? expectedCodePoints : 0});
return actualCodePoints;
}))
.function("getMetrics", optional_override([](SkFont& self) -> JSObject {
SkFontMetrics fm;
self.getMetrics(&fm);
JSObject j = emscripten::val::object();
j.set("ascent", fm.fAscent);
j.set("descent", fm.fDescent);
j.set("leading", fm.fLeading);
if (!(fm.fFlags & SkFontMetrics::kBoundsInvalid_Flag)) {
const float rect[] = {fm.fXMin, fm.fTop, fm.fXMax, fm.fBottom};
j.set("bounds", MakeTypedArray(4, rect));
}
return j;
}))
.function("_getGlyphIntercepts",
optional_override([](SkFont& self,
WASMPointerU16 gPtr,
size_t numGlyphs,
bool ownGlyphs,
WASMPointerF32 pPtr,
size_t numPos,
bool ownPos,
float top,
float bottom) -> Float32Array {
JSSpan<uint16_t> glyphs(gPtr, numGlyphs, ownGlyphs);
JSSpan<float> pos(pPtr, numPos, ownPos);
if (glyphs.size() > (pos.size() >> 1)) {
return emscripten::val("Not enough x,y position pairs for glyphs");
}
auto sects = self.getIntercepts(
glyphs, {(const SkPoint*)pos.data(), numGlyphs}, top, bottom);
return MakeTypedArray(sects.size(), (const float*)sects.data());
}),
allow_raw_pointers())
.function("getScaleX", &SkFont::getScaleX)
.function("getSize", &SkFont::getSize)
.function("getSkewX", &SkFont::getSkewX)
.function("isEmbolden", &SkFont::isEmbolden)
.function("getTypeface", &SkFont::getTypeface, allow_raw_pointers())
.function("setEdging", &SkFont::setEdging)
.function("setEmbeddedBitmaps", &SkFont::setEmbeddedBitmaps)
.function("setHinting", &SkFont::setHinting)
.function("setLinearMetrics", &SkFont::setLinearMetrics)
.function("setScaleX", &SkFont::setScaleX)
.function("setSize", &SkFont::setSize)
.function("setSkewX", &SkFont::setSkewX)
.function("setEmbolden", &SkFont::setEmbolden)
.function("setSubpixel", &SkFont::setSubpixel)
.function("setTypeface", &SkFont::setTypeface, allow_raw_pointers());
class_<SkFontMgr>("FontMgr")
.smart_ptr<sk_sp<SkFontMgr>>("sk_sp<FontMgr>")
.class_function(
"_fromData",
optional_override([](WASMPointerU32 dPtr,
WASMPointerU32 sPtr,
int numFonts) -> sk_sp<SkFontMgr> {
auto datas = reinterpret_cast<const uint8_t**>(dPtr);
auto sizes = reinterpret_cast<const size_t*>(sPtr);
std::unique_ptr<sk_sp<SkData>[]> skdatas(new sk_sp<SkData>[numFonts]);
for (int i = 0; i < numFonts; ++i) {
skdatas[i] = SkData::MakeFromMalloc(datas[i], sizes[i]);
}
return SkFontMgr_New_Custom_Data(SkSpan(skdatas.get(), numFonts));
}),
allow_raw_pointers())
.function("countFamilies", &SkFontMgr::countFamilies)
.function("getFamilyName",
optional_override([](SkFontMgr& self, int index) -> JSString {
if (index < 0 || index >= self.countFamilies()) {
return emscripten::val::null();
}
SkString s;
self.getFamilyName(index, &s);
return emscripten::val(s.c_str());
}))
.function("matchFamilyStyle",
optional_override([](SkFontMgr& self,
std::string name,
emscripten::val jsFontStyle) -> sk_sp<SkTypeface> {
auto weight =
SkFontStyle::Weight(jsFontStyle["weight"].isUndefined()
? SkFontStyle::kNormal_Weight
: jsFontStyle["weight"].as<int>());
auto width = SkFontStyle::Width(jsFontStyle["width"].isUndefined()
? SkFontStyle::kNormal_Width
: jsFontStyle["width"].as<int>());
auto slant = SkFontStyle::Slant(
jsFontStyle["slant"].isUndefined()
? SkFontStyle::kUpright_Slant
: static_cast<SkFontStyle::Slant>(
jsFontStyle["slant"].as<int>()));
SkFontStyle style(weight, width, slant);
return self.matchFamilyStyle(name.c_str(), style);
}),
allow_raw_pointers())
#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(
"_makeTypefaceFromData",
optional_override(
[](SkFontMgr& self, WASMPointerU8 fPtr, int flen) -> sk_sp<SkTypeface> {
uint8_t* font = reinterpret_cast<uint8_t*>(fPtr);
sk_sp<SkData> fontData = SkData::MakeFromMalloc(font, flen);
return self.makeFromData(fontData);
}),
allow_raw_pointers());
#endif // CK_NO_FONTS
class_<SkImage>("Image")
.smart_ptr<sk_sp<SkImage>>("sk_sp<Image>")
#ifdef CK_ENABLE_WEBGL
.class_function("_makeFromGenerator", &MakeImageFromGenerator)
#endif
// Note that this needs to be cleaned up with delete().
.function("getColorSpace",
optional_override([](sk_sp<SkImage> self) -> sk_sp<SkColorSpace> {
return self->imageInfo().refColorSpace();
}),
allow_raw_pointers())
.function("getImageInfo", optional_override([](sk_sp<SkImage> self) -> JSObject {
// We cannot return a SimpleImageInfo because the colorspace object would
// be leaked.
JSObject result = emscripten::val::object();
SkImageInfo ii = self->imageInfo();
result.set("alphaType", ii.alphaType());
result.set("colorType", ii.colorType());
result.set("height", ii.height());
result.set("width", ii.width());
return result;
}))
.function("height", &SkImage::height)
.function("_encodeToBytes",
optional_override([](sk_sp<SkImage> self,
SkEncodedImageFormat fmt,
int quality) -> Uint8Array {
return encodeImage(nullptr, self, fmt, quality);
}))
#if defined(ENABLE_GPU)
.function("_encodeToBytes",
optional_override([](sk_sp<SkImage> self,
SkEncodedImageFormat fmt,
int quality,
GrDirectContext* dContext) -> Uint8Array {
return encodeImage(dContext, self, fmt, quality);
}),
allow_raw_pointers())
#endif
.function("makeCopyWithDefaultMipmaps",
optional_override([](sk_sp<SkImage> self) -> sk_sp<SkImage> {
return self->withDefaultMipmaps();
}))
.function("_makeShaderCubic",
optional_override([](sk_sp<SkImage> self,
SkTileMode tx,
SkTileMode ty,
float B,
float C, // See SkSamplingOptions.h for docs.
WASMPointerF32 mPtr) -> sk_sp<SkShader> {
OptionalMatrix localMatrix(mPtr);
return self->makeShader(
tx, ty, SkSamplingOptions({B, C}), mPtr ? &localMatrix : nullptr);
}),
allow_raw_pointers())
.function("_makeShaderOptions",
optional_override([](sk_sp<SkImage> self,
SkTileMode tx,
SkTileMode ty,
SkFilterMode filter,
SkMipmapMode mipmap,
WASMPointerF32 mPtr) -> sk_sp<SkShader> {
OptionalMatrix localMatrix(mPtr);
return self->makeShader(
tx, ty, {filter, mipmap}, mPtr ? &localMatrix : nullptr);
}),
allow_raw_pointers())
#if defined(ENABLE_GPU)
.function("_readPixels",
optional_override([](sk_sp<SkImage> self,
SimpleImageInfo sii,
WASMPointerU8 pPtr,
size_t dstRowBytes,
int srcX,
int srcY,
GrDirectContext* dContext) -> bool {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo ii = toSkImageInfo(sii);
return self->readPixels(dContext, ii, pixels, dstRowBytes, srcX, srcY);
}),
allow_raw_pointers())
#endif
.function("_readPixels",
optional_override([](sk_sp<SkImage> self,
SimpleImageInfo sii,
WASMPointerU8 pPtr,
size_t dstRowBytes,
int srcX,
int srcY) -> bool {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo ii = toSkImageInfo(sii);
return self->readPixels(nullptr, ii, pixels, dstRowBytes, srcX, srcY);
}),
allow_raw_pointers())
.function("width", &SkImage::width);
class_<SkImageFilter>("ImageFilter")
.smart_ptr<sk_sp<SkImageFilter>>("sk_sp<ImageFilter>")
.function("_getOutputBounds",
optional_override([](const SkImageFilter& self,
WASMPointerF32 bPtr,
WASMPointerF32 mPtr,
WASMPointerU32 oPtr) -> void {
SkRect* rect = reinterpret_cast<SkRect*>(bPtr);
OptionalMatrix ctm(mPtr);
SkIRect* output = reinterpret_cast<SkIRect*>(oPtr);
output[0] = self.filterBounds(ctm.mapRect(*rect).roundOut(),
ctm,
SkImageFilter::kForward_MapDirection);
}))
.class_function(
"MakeBlend",
optional_override([](SkBlendMode mode,
sk_sp<SkImageFilter> background,
sk_sp<SkImageFilter> foreground) -> sk_sp<SkImageFilter> {
return SkImageFilters::Blend(mode, background, foreground);
}))
.class_function(
"MakeBlur",
optional_override([](float sigmaX,
float sigmaY,
SkTileMode tileMode,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
return SkImageFilters::Blur(sigmaX, sigmaY, tileMode, input);
}))
.class_function(
"MakeColorFilter",
optional_override([](sk_sp<SkColorFilter> cf,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
return SkImageFilters::ColorFilter(cf, input);
}))
.class_function("MakeCompose", &SkImageFilters::Compose)
.class_function(
"MakeDilate",
optional_override([](float radiusX,
float radiusY,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
return SkImageFilters::Dilate(radiusX, radiusY, input);
}))
.class_function(
"MakeDisplacementMap",
optional_override([](SkColorChannel xChannelSelector,
SkColorChannel yChannelSelector,
float scale,
sk_sp<SkImageFilter> displacement,
sk_sp<SkImageFilter> color) -> sk_sp<SkImageFilter> {
return SkImageFilters::DisplacementMap(
xChannelSelector, yChannelSelector, scale, displacement, color);
}))
.class_function("MakeShader",
optional_override([](sk_sp<SkShader> shader) -> sk_sp<SkImageFilter> {
return SkImageFilters::Shader(shader);
}))
.class_function(
"_MakeDropShadow",
optional_override([](float dx,
float dy,
float sigmaX,
float sigmaY,
WASMPointerF32 cPtr,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
SkColor4f c = ptrToSkColor4f(cPtr);
return SkImageFilters::DropShadow(
dx, dy, sigmaX, sigmaY, c.toSkColor(), input);
}))
.class_function(
"_MakeDropShadowOnly",
optional_override([](float dx,
float dy,
float sigmaX,
float sigmaY,
WASMPointerF32 cPtr,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
SkColor4f c = ptrToSkColor4f(cPtr);
return SkImageFilters::DropShadowOnly(
dx, dy, sigmaX, sigmaY, c.toSkColor(), input);
}))
.class_function(
"MakeErode",
optional_override([](float radiusX,
float radiusY,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
return SkImageFilters::Erode(radiusX, radiusY, input);
}))
.class_function("_MakeImageCubic",
optional_override([](sk_sp<SkImage> image,
float B,
float C,
WASMPointerF32 srcPtr,
WASMPointerF32 dstPtr) -> sk_sp<SkImageFilter> {
const SkRect* src = reinterpret_cast<const SkRect*>(srcPtr);
const SkRect* dst = reinterpret_cast<const SkRect*>(dstPtr);
if (src && dst) {
return SkImageFilters::Image(
image, *src, *dst, SkSamplingOptions({B, C}));
}
return SkImageFilters::Image(image, SkSamplingOptions({B, C}));
}))
.class_function("_MakeImageOptions",
optional_override([](sk_sp<SkImage> image,
SkFilterMode fm,
SkMipmapMode mm,
WASMPointerF32 srcPtr,
WASMPointerF32 dstPtr) -> sk_sp<SkImageFilter> {
const SkRect* src = reinterpret_cast<const SkRect*>(srcPtr);
const SkRect* dst = reinterpret_cast<const SkRect*>(dstPtr);
if (src && dst) {
return SkImageFilters::Image(
image, *src, *dst, SkSamplingOptions(fm, mm));
}
return SkImageFilters::Image(image, SkSamplingOptions(fm, mm));
}))
.class_function(
"_MakeMatrixTransformCubic",
optional_override([](WASMPointerF32 mPtr,
float B,
float C,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
OptionalMatrix matr(mPtr);
return SkImageFilters::MatrixTransform(
matr, SkSamplingOptions({B, C}), input);
}))
.class_function(
"_MakeMatrixTransformOptions",
optional_override([](WASMPointerF32 mPtr,
SkFilterMode fm,
SkMipmapMode mm,
sk_sp<SkImageFilter> input) -> sk_sp<SkImageFilter> {
OptionalMatrix matr(mPtr);
return SkImageFilters::MatrixTransform(
matr, SkSamplingOptions(fm, mm), input);
}))
.class_function("MakeOffset",
optional_override([](float dx, float dy, sk_sp<SkImageFilter> input)
-> sk_sp<SkImageFilter> {
return SkImageFilters::Offset(dx, dy, input);
}));
class_<SkMaskFilter>("MaskFilter")
.smart_ptr<sk_sp<SkMaskFilter>>("sk_sp<MaskFilter>")
.class_function("MakeBlur",
optional_override([](SkBlurStyle style,
float 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());
class_<SkPaint>("Paint")
.constructor<>()
.function("copy", optional_override([](const SkPaint& self) -> SkPaint {
SkPaint p(self);
return p;
}))
// provide an allocated place to put the returned color
.function("_getColor",
optional_override([](SkPaint& self, WASMPointerF32 cPtr) -> void {
const SkColor4f& c = self.getColor4f();
float* fourFloats = reinterpret_cast<float*>(cPtr);
memcpy(fourFloats, c.vec(), 4 * sizeof(float));
}))
.function("getStrokeCap", &SkPaint::getStrokeCap)
.function("getStrokeJoin", &SkPaint::getStrokeJoin)
.function("getStrokeMiter", &SkPaint::getStrokeMiter)
.function("getStrokeWidth", &SkPaint::getStrokeWidth)
.function("setAntiAlias", &SkPaint::setAntiAlias)
.function("setAlphaf", &SkPaint::setAlphaf)
.function("setBlendMode", &SkPaint::setBlendMode)
.function("setBlender", &SkPaint::setBlender)
.function(
"_setColor",
optional_override(
[](SkPaint& self, WASMPointerF32 cPtr, sk_sp<SkColorSpace> colorSpace) {
self.setColor(ptrToSkColor4f(cPtr), colorSpace.get());
}))
.function("setColorInt", optional_override([](SkPaint& self, SkColor color) {
self.setColor(SkColor4f::FromColor(color), nullptr);
}))
.function("setColorInt",
optional_override(
[](SkPaint& self, SkColor color, sk_sp<SkColorSpace> colorSpace) {
self.setColor(SkColor4f::FromColor(color), colorSpace.get());
}))
.function("setColorFilter", &SkPaint::setColorFilter)
.function("setDither", &SkPaint::setDither)
.function("setImageFilter", &SkPaint::setImageFilter)
.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_<SkColorSpace>("ColorSpace")
.smart_ptr<sk_sp<SkColorSpace>>("sk_sp<ColorSpace>")
.class_function(
"Equals",
optional_override([](sk_sp<SkColorSpace> a, sk_sp<SkColorSpace> b) -> bool {
return SkColorSpace::Equals(a.get(), b.get());
}))
// These are private because they are to be called once in interface.js to
// avoid clients having to delete the returned objects.
.class_function("_MakeSRGB", &SkColorSpace::MakeSRGB)
.class_function("_MakeDisplayP3", optional_override([]() -> sk_sp<SkColorSpace> {
return SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB,
SkNamedGamut::kDisplayP3);
}))
.class_function("_MakeAdobeRGB", optional_override([]() -> sk_sp<SkColorSpace> {
return SkColorSpace::MakeRGB(SkNamedTransferFn::k2Dot2,
SkNamedGamut::kAdobeRGB);
}));
class_<SkPathEffect>("PathEffect")
.smart_ptr<sk_sp<SkPathEffect>>("sk_sp<PathEffect>")
.class_function("MakeCorner", &SkCornerPathEffect::Make)
.class_function(
"_MakeDash",
optional_override(
[](WASMPointerF32 cptr, int count, float phase) -> sk_sp<SkPathEffect> {
const float* intervals = reinterpret_cast<const float*>(cptr);
return SkDashPathEffect::Make({intervals, count}, phase);
}),
allow_raw_pointers())
.class_function("MakeDiscrete", &SkDiscretePathEffect::Make)
.class_function(
"_MakeLine2D",
optional_override([](float width, WASMPointerF32 mPtr) -> sk_sp<SkPathEffect> {
SkMatrix matrix;
const float* nineMatrixValues = reinterpret_cast<const float*>(mPtr);
matrix.set9(nineMatrixValues);
return SkLine2DPathEffect::Make(width, matrix);
}),
allow_raw_pointers())
.class_function("MakePath1D", &SkPath1DPathEffect::Make)
.class_function(
"_MakePath2D",
optional_override([](WASMPointerF32 mPtr, SkPath path) -> sk_sp<SkPathEffect> {
SkMatrix matrix;
const float* nineMatrixValues = reinterpret_cast<const float*>(mPtr);
matrix.set9(nineMatrixValues);
return SkPath2DPathEffect::Make(matrix, path);
}),
allow_raw_pointers());
class_<SkPath>("Path")
.constructor<>()
.class_function("CanInterpolate", &CanInterpolate)
#ifdef CK_INCLUDE_PATHOPS
.class_function("MakeFromOp", &MakePathFromOp)
#endif
.class_function("MakeFromSVGString", &MakePathFromSVGString)
.class_function("MakeFromPathInterpolation", &MakePathFromInterpolation)
.class_function("_MakeFromCmds", &MakePathFromCmds)
.class_function("_MakeFromVerbsPointsWeights", &MakePathFromVerbsPointsWeights)
.function("countPoints", &SkPath::countPoints)
.function("contains", optional_override(
[](const SkPath& self, float x, float y) -> bool {
return self.contains({x, y});
}))
.function("_getPoint",
optional_override(
[](const SkPath& self, int index, WASMPointerF32 oPtr) -> void {
SkPoint* output = reinterpret_cast<SkPoint*>(oPtr);
*output = self.getPoint(index);
}))
.function("isEmpty", &SkPath::isEmpty)
.function("makeDashed", &MakeDashed)
.function("_makeTrimmed", &MakeTrimmed)
.function("_makeStroked", &MakeStroked)
// Exporting
.function("toSVGString", &ToSVGString)
.function("toCmds", &ToCmds)
.function("setFillType", &SkPath::setFillType)
.function("getFillType", &SkPath::getFillType)
.function("_getBounds",
optional_override([](const SkPath& self, WASMPointerF32 fPtr) -> void {
SkRect* output = reinterpret_cast<SkRect*>(fPtr);
output[0] = self.getBounds();
}))
.function("_computeTightBounds",
optional_override([](const SkPath& self, WASMPointerF32 fPtr) -> void {
SkRect* output = reinterpret_cast<SkRect*>(fPtr);
output[0] = self.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
#ifdef CK_INCLUDE_PATHOPS
.function("makeAsWinding", &MakeAsWinding)
.function("_makeCombined",
optional_override([](const SkPath& self,
const SkPath& other,
SkPathOp op) -> SkPathOrNull {
return MakePathFromOp(self, other, op);
}))
.function("_makeSimplified", &MakeSimplified)
#endif
;
class_<SkPathBuilder>("PathBuilder")
.constructor<>()
.constructor<SkPath>()
// These methods all return void and we handle the "chaining" logic in the JS.
// If we returned PathBuilder here, emsdk would allocate new pathbuilder objects
// causing memory leaks.
.function("_addArc",
optional_override([](SkPathBuilder& self,
WASMPointerF32 fPtr,
float startAngle,
float sweepAngle) -> void {
const SkRect* oval = reinterpret_cast<const SkRect*>(fPtr);
self.addArc(*oval, startAngle, sweepAngle);
}))
.function("_addOval",
optional_override([](SkPathBuilder& self,
WASMPointerF32 fPtr,
bool ccw,
unsigned start) -> void {
const SkRect* oval = reinterpret_cast<const SkRect*>(fPtr);
self.addOval(
*oval, ccw ? SkPathDirection::kCCW : SkPathDirection::kCW, start);
}))
.function("_addCircle",
optional_override([](SkPathBuilder& self, float x, float y, float r, bool ccw)
-> void {
self.addCircle(
x, y, r, ccw ? SkPathDirection::kCCW : SkPathDirection::kCW);
}))
// interface.js has 3 overloads of addPath
.function("_addPath", &ApplyAddPath)
.function("_addPolygon",
optional_override([](SkPathBuilder& self,
WASMPointerF32 fPtr,
int count,
bool close) -> void {
const SkPoint* pts = reinterpret_cast<const SkPoint*>(fPtr);
self.addPolygon({pts, count}, close);
}))
.function("_addRect",
optional_override(
[](SkPathBuilder& self, WASMPointerF32 fPtr, bool ccw) -> void {
const SkRect* rect = reinterpret_cast<const SkRect*>(fPtr);
self.addRect(*rect,
ccw ? SkPathDirection::kCCW : SkPathDirection::kCW);
}))
.function("_addRRect",
optional_override(
[](SkPathBuilder& self, WASMPointerF32 fPtr, bool ccw) -> void {
self.addRRect(ptrToSkRRect(fPtr),
ccw ? SkPathDirection::kCCW : SkPathDirection::kCW);
}))
.function("_addVerbsPointsWeights", &PathAddVerbsPointsWeights)
.function("_arcToOval",
optional_override([](SkPathBuilder& self,
WASMPointerF32 fPtr,
float startAngle,
float sweepAngle,
bool forceMoveTo) -> void {
const SkRect* oval = reinterpret_cast<const SkRect*>(fPtr);
self.arcTo(*oval, startAngle, sweepAngle, forceMoveTo);
}))
.function("_arcToRotated", &ApplyArcToArcSize)
.function("_arcToTangent", &ApplyArcToTangent)
.function("_close", &ApplyClose)
.function("_conicTo", &ApplyConicTo)
.function("contains", optional_override(
[](const SkPathBuilder& self, float x, float y) -> bool {
return self.contains({x, y});
}))
.function("countPoints", &SkPathBuilder::countPoints)
.function("_cubicTo", &ApplyCubicTo)
.function("detach", optional_override([](SkPathBuilder& self) -> SkPath {
return self.detach();
}))
.function("_getBounds", optional_override(
[](const SkPathBuilder& self, WASMPointerF32 fPtr) -> void {
SkRect* output = reinterpret_cast<SkRect*>(fPtr);
if (auto bounds = self.computeFiniteBounds()) {
output[0] = *bounds;
return;
}
output[0] = SkRect::MakeEmpty();
}))
.function("isEmpty", &SkPathBuilder::isEmpty)
.function("_lineTo", &ApplyLineTo)
.function("_moveTo", &ApplyMoveTo)
.function("_quadTo", &ApplyQuadTo)
.function("_rArcTo", &ApplyRArcToArcSize)
.function("_rConicTo", &ApplyRConicTo)
.function("_rCubicTo", &ApplyRCubicTo)
.function("_rLineTo", &ApplyRLineTo)
.function("_rMoveTo", &ApplyRMoveTo)
.function("_rQuadTo", &ApplyRQuadTo)
.function("reset", &ApplyReset)
.function("setFillType", &SkPathBuilder::setFillType)
.function("snapshot", optional_override([](SkPathBuilder& self) -> SkPath {
return self.snapshot();
}))
.function("_transform",
select_overload<void(SkPathBuilder&,
float,
float,
float,
float,
float,
float,
float,
float,
float)>(&ApplyTransform));
static SkRTreeFactory bbhFactory;
class_<SkPictureRecorder>("PictureRecorder")
.constructor<>()
.function("_beginRecording",
optional_override([](SkPictureRecorder& self,
WASMPointerF32 fPtr,
bool computeBounds) -> SkCanvas* {
SkRect* bounds = reinterpret_cast<SkRect*>(fPtr);
return self.beginRecording(*bounds,
computeBounds ? &bbhFactory : nullptr);
}),
allow_raw_pointers())
.function("finishRecordingAsPicture",
optional_override([](SkPictureRecorder& self) -> sk_sp<SkPicture> {
return self.finishRecordingAsPicture();
}),
allow_raw_pointers());
class_<SkPicture>("Picture")
.smart_ptr<sk_sp<SkPicture>>("sk_sp<Picture>")
.function("_makeShader",
optional_override([](SkPicture& self,
SkTileMode tmx,
SkTileMode tmy,
SkFilterMode mode,
WASMPointerF32 mPtr,
WASMPointerF32 rPtr) -> sk_sp<SkShader> {
OptionalMatrix localMatrix(mPtr);
SkRect* tileRect = reinterpret_cast<SkRect*>(rPtr);
return self.makeShader(
tmx, tmy, mode, mPtr ? &localMatrix : nullptr, tileRect);
}),
allow_raw_pointers())
.function("_cullRect",
optional_override([](SkPicture& self, WASMPointerF32 fPtr) -> void {
SkRect* output = reinterpret_cast<SkRect*>(fPtr);
output[0] = self.cullRect();
}))
.function("approximateBytesUsed", &SkPicture::approximateBytesUsed)
#ifdef CK_SERIALIZE_SKP
// The serialized format of an SkPicture (informally called an "skp"), is not something
// that clients should ever rely on. The format may change at anytime and no promises
// are made for backwards or forward compatibility.
.function("serialize",
optional_override([](SkPicture& self) -> Uint8Array {
// We want to make sure we always save the underlying data of the Typeface
// to the SkPicture. By default, the data for "system" fonts is not saved,
// just an identifier (e.g. the family name and style). We do not want the
// user to have to supply a FontMgr with the correct fonts by name when
// deserializing, so we choose to always serialize the underlying data.
// This makes the SKPs a bit bigger, but easier to use.
SkSerialProcs sp;
sp.fTypefaceProc = &alwaysSaveTypefaceBytes;
sp.fImageProc = [](SkImage* img, void*) -> sk_sp<SkData> {
return SkPngEncoder::Encode(nullptr, img, SkPngEncoder::Options{});
};
sk_sp<SkData> data = self.serialize(&sp);
if (!data) {
return emscripten::val::null();
}
return toBytes(data);
}),
allow_raw_pointers())
#endif
;
class_<SkShader>("Shader")
.smart_ptr<sk_sp<SkShader>>("sk_sp<Shader>")
.class_function(
"MakeBlend",
select_overload<sk_sp<SkShader>(SkBlendMode, sk_sp<SkShader>, sk_sp<SkShader>)>(
&SkShaders::Blend))
.class_function(
"_MakeColor",
optional_override([](WASMPointerF32 cPtr,
sk_sp<SkColorSpace> colorSpace) -> sk_sp<SkShader> {
return SkShaders::Color(ptrToSkColor4f(cPtr), colorSpace);
}))
.class_function("MakeFractalNoise",
optional_override([](float baseFreqX,
float baseFreqY,
int numOctaves,
float seed,
int tileW,
int tileH) -> sk_sp<SkShader> {
// if tileSize is empty (e.g. tileW <= 0 or tileH <= 0, it will be
// ignored.
SkISize tileSize = SkISize::Make(tileW, tileH);
return SkShaders::MakeFractalNoise(
baseFreqX, baseFreqY, numOctaves, seed, &tileSize);
}))
// Here and in other gradient functions, cPtr is a pointer to an array of data
// representing colors. whether this is an array of SkColor or SkColor4f is indicated
// by the colorType argument. Only RGBA_8888 and RGBA_F32 are accepted.
.class_function(
"_MakeLinearGradient",
optional_override([](WASMPointerF32 fourFloatsPtr,
WASMPointerF32 cPtr,
SkColorType colorType,
WASMPointerF32 pPtr,
int count,
SkTileMode mode,
uint32_t flags,
WASMPointerF32 mPtr,
sk_sp<SkColorSpace> colorSpace) -> sk_sp<SkShader> {
const SkPoint* points = reinterpret_cast<const SkPoint*>(fourFloatsPtr);
const float* positions = reinterpret_cast<const float*>(pPtr);
OptionalMatrix localMatrix(mPtr);
if (colorType == SkColorType::kRGBA_F32_SkColorType) {
const SkColor4f* colors = reinterpret_cast<const SkColor4f*>(cPtr);
return SkGradientShader::MakeLinear(points,
colors,
colorSpace,
positions,
count,
mode,
flags,
mPtr ? &localMatrix : nullptr);
} else if (colorType == SkColorType::kRGBA_8888_SkColorType) {
const SkColor* colors = reinterpret_cast<const SkColor*>(cPtr);
return SkGradientShader::MakeLinear(points,
colors,
positions,
count,
mode,
flags,
mPtr ? &localMatrix : nullptr);
}
SkDebugf("%d is not an accepted colorType\n", colorType);
return nullptr;
}),
allow_raw_pointers())
.class_function(
"_MakeRadialGradient",
optional_override([](float cx,
float cy,
float radius,
WASMPointerF32 cPtr,
SkColorType colorType,
WASMPointerF32 pPtr,
int count,
SkTileMode mode,
uint32_t flags,
WASMPointerF32 mPtr,
sk_sp<SkColorSpace> colorSpace) -> sk_sp<SkShader> {
const float* positions = reinterpret_cast<const float*>(pPtr);
OptionalMatrix localMatrix(mPtr);
if (colorType == SkColorType::kRGBA_F32_SkColorType) {
const SkColor4f* colors = reinterpret_cast<const SkColor4f*>(cPtr);
return SkGradientShader::MakeRadial({cx, cy},
radius,
colors,
colorSpace,
positions,
count,
mode,
flags,
mPtr ? &localMatrix : nullptr);
} else if (colorType == SkColorType::kRGBA_8888_SkColorType) {
const SkColor* colors = reinterpret_cast<const SkColor*>(cPtr);
return SkGradientShader::MakeRadial({cx, cy},
radius,
colors,
positions,
count,
mode,
flags,
mPtr ? &localMatrix : nullptr);
}
SkDebugf("%d is not an accepted colorType\n", colorType);
return nullptr;
}),
allow_raw_pointers())
.class_function(
"_MakeSweepGradient",
optional_override([](float cx,
float cy,
WASMPointerF32 cPtr,
SkColorType colorType,
WASMPointerF32 pPtr,
int count,
SkTileMode mode,
float startAngle,
float endAngle,
uint32_t flags,
WASMPointerF32 mPtr,
sk_sp<SkColorSpace> colorSpace) -> sk_sp<SkShader> {
const float* positions = reinterpret_cast<const float*>(pPtr);
OptionalMatrix localMatrix(mPtr);
if (colorType == SkColorType::kRGBA_F32_SkColorType) {
const SkColor4f* colors = reinterpret_cast<const SkColor4f*>(cPtr);
return SkGradientShader::MakeSweep(cx,
cy,
colors,
colorSpace,
positions,
count,
mode,
startAngle,
endAngle,
flags,
mPtr ? &localMatrix : nullptr);
} else if (colorType == SkColorType::kRGBA_8888_SkColorType) {
const SkColor* colors = reinterpret_cast<const SkColor*>(cPtr);
return SkGradientShader::MakeSweep(cx,
cy,
colors,
positions,
count,
mode,
startAngle,
endAngle,
flags,
mPtr ? &localMatrix : nullptr);
}
SkDebugf("%d is not an accepted colorType\n", colorType);
return nullptr;
}),
allow_raw_pointers())
.class_function("MakeTurbulence",
optional_override([](float baseFreqX,
float baseFreqY,
int numOctaves,
float seed,
int tileW,
int tileH) -> sk_sp<SkShader> {
// if tileSize is empty (e.g. tileW <= 0 or tileH <= 0, it will be
// ignored.
SkISize tileSize = SkISize::Make(tileW, tileH);
return SkShaders::MakeTurbulence(
baseFreqX, baseFreqY, numOctaves, seed, &tileSize);
}))
.class_function(
"_MakeTwoPointConicalGradient",
optional_override([](WASMPointerF32 fourFloatsPtr,
float startRadius,
float endRadius,
WASMPointerF32 cPtr,
SkColorType colorType,
WASMPointerF32 pPtr,
int count,
SkTileMode mode,
uint32_t flags,
WASMPointerF32 mPtr,
sk_sp<SkColorSpace> colorSpace) -> sk_sp<SkShader> {
const SkPoint* startAndEnd =
reinterpret_cast<const SkPoint*>(fourFloatsPtr);
const float* positions = reinterpret_cast<const float*>(pPtr);
OptionalMatrix localMatrix(mPtr);
if (colorType == SkColorType::kRGBA_F32_SkColorType) {
const SkColor4f* colors = reinterpret_cast<const SkColor4f*>(cPtr);
return SkGradientShader::MakeTwoPointConical(
startAndEnd[0],
startRadius,
startAndEnd[1],
endRadius,
colors,
colorSpace,
positions,
count,
mode,
flags,
mPtr ? &localMatrix : nullptr);
} else if (colorType == SkColorType::kRGBA_8888_SkColorType) {
const SkColor* colors = reinterpret_cast<const SkColor*>(cPtr);
return SkGradientShader::MakeTwoPointConical(
startAndEnd[0],
startRadius,
startAndEnd[1],
endRadius,
colors,
positions,
count,
mode,
flags,
mPtr ? &localMatrix : nullptr);
}
SkDebugf("%d is not an accepted colorType\n", colorType);
return nullptr;
}),
allow_raw_pointers());
#if defined(CK_INCLUDE_RUNTIME_EFFECT)
class_<SkSL::DebugTrace>("DebugTrace")
.smart_ptr<sk_sp<SkSL::DebugTrace>>("sk_sp<DebugTrace>")
.function("writeTrace",
optional_override([](const SkSL::DebugTrace* self) -> std::string {
#if defined(CK_DEBUG_TRACE_JSON)
SkDynamicMemoryWStream wstream;
SkSLTraceUtils::WriteTrace(
static_cast<const SkSL::DebugTracePriv&>(*self), &wstream);
sk_sp<SkData> trace = wstream.detachAsData();
return std::string(reinterpret_cast<const char*>(trace->bytes()),
trace->size());
#else
SkDynamicMemoryWStream wstream;
self->dump(&wstream);
sk_sp<SkData> trace = wstream.detachAsData();
return std::string(reinterpret_cast<const char*>(trace->bytes()),
trace->size());
#endif
}),
allow_raw_pointers());
value_object<SkRuntimeEffect::TracedShader>("TracedShader")
.field("shader", &SkRuntimeEffect::TracedShader::shader)
.field("debugTrace", &SkRuntimeEffect::TracedShader::debugTrace);
class_<SkRuntimeEffect>("RuntimeEffect")
.smart_ptr<sk_sp<SkRuntimeEffect>>("sk_sp<RuntimeEffect>")
.class_function(
"_Make",
optional_override([](std::string sksl,
emscripten::val errHandler) -> sk_sp<SkRuntimeEffect> {
SkString s(sksl.c_str(), sksl.length());
auto [effect, errorText] = SkRuntimeEffect::MakeForShader(s);
if (!effect) {
errHandler.call<void>("onError", val(errorText.c_str()));
return nullptr;
}
return effect;
}))
.class_function(
"_MakeForBlender",
optional_override([](std::string sksl,
emscripten::val errHandler) -> sk_sp<SkRuntimeEffect> {
SkString s(sksl.c_str(), sksl.length());
auto [effect, errorText] = SkRuntimeEffect::MakeForBlender(s);
if (!effect) {
errHandler.call<void>("onError", val(errorText.c_str()));
return nullptr;
}
return effect;
}))
.class_function("MakeTraced",
optional_override([](sk_sp<SkShader> shader,
int traceCoordX,
int traceCoordY) -> SkRuntimeEffect::TracedShader {
return SkRuntimeEffect::MakeTraced(
shader, SkIPoint::Make(traceCoordX, traceCoordY));
}))
.function("_makeShader",
optional_override([](SkRuntimeEffect& self,
WASMPointerF32 fPtr,
size_t fLen,
bool shouldOwnUniforms,
WASMPointerF32 mPtr) -> sk_sp<SkShader> {
void* uniformData = reinterpret_cast<void*>(fPtr);
castUniforms(uniformData, fLen, self);
sk_sp<SkData> uniforms;
if (shouldOwnUniforms) {
uniforms = SkData::MakeFromMalloc(uniformData, fLen);
} else {
uniforms = SkData::MakeWithoutCopy(uniformData, fLen);
}
OptionalMatrix localMatrix(mPtr);
return self.makeShader(
uniforms, nullptr, 0, mPtr ? &localMatrix : nullptr);
}))
.function("_makeShaderWithChildren",
optional_override([](SkRuntimeEffect& self,
WASMPointerF32 fPtr,
size_t fLen,
bool shouldOwnUniforms,
WASMPointerU32 cPtrs,
size_t cLen,
WASMPointerF32 mPtr) -> sk_sp<SkShader> {
void* uniformData = reinterpret_cast<void*>(fPtr);
castUniforms(uniformData, fLen, self);
sk_sp<SkData> uniforms;
if (shouldOwnUniforms) {
uniforms = SkData::MakeFromMalloc(uniformData, fLen);
} else {
uniforms = SkData::MakeWithoutCopy(uniformData, fLen);
}
sk_sp<SkShader>* children = new sk_sp<SkShader>[cLen];
SkShader** childrenPtrs = reinterpret_cast<SkShader**>(cPtrs);
for (size_t i = 0; i < cLen; i++) {
// This bare pointer was already part of an sk_sp (owned outside of
// here), so we want to ref the new sk_sp so makeShader doesn't clean
// it up.
children[i] = sk_ref_sp<SkShader>(childrenPtrs[i]);
}
OptionalMatrix localMatrix(mPtr);
auto s = self.makeShader(
uniforms, children, cLen, mPtr ? &localMatrix : nullptr);
delete[] children;
return s;
}))
.function("_makeBlender",
optional_override([](SkRuntimeEffect& self,
WASMPointerF32 fPtr,
size_t fLen,
bool shouldOwnUniforms) -> sk_sp<SkBlender> {
void* uniformData = reinterpret_cast<void*>(fPtr);
castUniforms(uniformData, fLen, self);
sk_sp<SkData> uniforms;
if (shouldOwnUniforms) {
uniforms = SkData::MakeFromMalloc(uniformData, fLen);
} else {
uniforms = SkData::MakeWithoutCopy(uniformData, fLen);
}
return self.makeBlender(uniforms, {});
}))
.function("getUniformCount", optional_override([](SkRuntimeEffect& self) -> int {
return self.uniforms().size();
}))
.function("getUniformFloatCount", optional_override([](SkRuntimeEffect& self) -> int {
return self.uniformSize() / sizeof(float);
}))
.function("getUniformName",
optional_override([](SkRuntimeEffect& self, int i) -> JSString {
auto it = self.uniforms().begin() + i;
return emscripten::val(std::string(it->name).c_str());
}))
.function("getUniform",
optional_override([](SkRuntimeEffect& self, int i) -> RuntimeEffectUniform {
auto it = self.uniforms().begin() + i;
RuntimeEffectUniform su = fromUniform(*it);
return su;
}));
value_object<RuntimeEffectUniform>("RuntimeEffectUniform")
.field("columns", &RuntimeEffectUniform::columns)
.field("rows", &RuntimeEffectUniform::rows)
.field("slot", &RuntimeEffectUniform::slot)
.field("isInteger", &RuntimeEffectUniform::isInteger);
constant("rt_effect", true);
#endif
class_<SkSurface>("Surface")
.smart_ptr<sk_sp<SkSurface>>("sk_sp<Surface>")
.class_function("_makeRasterDirect",
optional_override([](const SimpleImageInfo ii,
WASMPointerU8 pPtr,
size_t rowBytes) -> sk_sp<SkSurface> {
uint8_t* pixels = reinterpret_cast<uint8_t*>(pPtr);
SkImageInfo imageInfo = toSkImageInfo(ii);
return SkSurfaces::WrapPixels(imageInfo, pixels, rowBytes, nullptr);
}),
allow_raw_pointers())
.function("_flush", optional_override([](SkSurface& self) {
#ifdef CK_ENABLE_WEBGL
skgpu::ganesh::FlushAndSubmit(&self);
#endif
}))
.function("_getCanvas", &SkSurface::getCanvas, allow_raw_pointers())
.function("imageInfo", optional_override([](SkSurface& self) -> SimpleImageInfo {
const auto& ii = self.imageInfo();
return {ii.width(),
ii.height(),
ii.colorType(),
ii.alphaType(),
ii.refColorSpace()};
}))
.function("height", &SkSurface::height)
#ifdef CK_ENABLE_WEBGL
.function("_makeImageFromTexture",
optional_override([](SkSurface& self,
uint32_t webglHandle,
uint32_t texHandle,
SimpleImageInfo ii) -> sk_sp<SkImage> {
auto releaseCtx = new TextureReleaseContext{webglHandle, texHandle};
GrGLTextureInfo gti = {
GR_GL_TEXTURE_2D,
texHandle,
GR_GL_RGBA8}; // TODO(kjlubick) look at ii for this
auto gbt = GrBackendTextures::MakeGL(
ii.width, ii.height, skgpu::Mipmapped::kNo, gti);
auto dContext = GrAsDirectContext(self.getCanvas()->recordingContext());
return SkImages::BorrowTextureFrom(
dContext,
gbt,
GrSurfaceOrigin::kTopLeft_GrSurfaceOrigin,
ii.colorType,
ii.alphaType,
ii.colorSpace,
deleteJSTexture,
releaseCtx);
}))
#endif // CK_ENABLE_WEBGL
#ifdef CK_ENABLE_WEBGPU
.function("_replaceBackendTexture",
optional_override([](SkSurface& self,
uint32_t texHandle,
uint32_t texFormat,
int width,
int height) {
return ReplaceBackendTexture(self, texHandle, texFormat, width, height);
}))
#endif // CK_ENABLE_WEBGPU
.function("_makeImageSnapshot",
optional_override([](SkSurface& self, WASMPointerU32 iPtr) -> sk_sp<SkImage> {
SkIRect* bounds = reinterpret_cast<SkIRect*>(iPtr);
if (!bounds) {
return self.makeImageSnapshot();
}
return self.makeImageSnapshot(*bounds);
}))
.function(
"_makeSurface",
optional_override([](SkSurface& self, SimpleImageInfo sii) -> sk_sp<SkSurface> {
return self.makeSurface(toSkImageInfo(sii));
}),
allow_raw_pointers())
#ifdef ENABLE_GPU
.function("reportBackendTypeIsGPU", optional_override([](SkSurface& self) -> bool {
return self.getCanvas()->recordingContext() != nullptr;
}))
.function("sampleCnt", optional_override([](SkSurface& self) -> int {
auto backendRT = SkSurfaces::GetBackendRenderTarget(
&self, SkSurfaces::BackendHandleAccess::kFlushRead);
return (backendRT.isValid()) ? backendRT.sampleCnt() : 0;
}))
.function("_resetContext", optional_override([](SkSurface& self) -> void {
GrAsDirectContext(self.recordingContext())
->resetContext(kTextureBinding_GrGLBackendState);
}))
#else
.function("reportBackendTypeIsGPU",
optional_override([](SkSurface& self) -> bool { return false; }))
#endif
.function("width", &SkSurface::width);
#ifndef CK_NO_FONTS
class_<SkTextBlob>("TextBlob")
.smart_ptr<sk_sp<SkTextBlob>>("sk_sp<TextBlob>")
.class_function("_MakeFromRSXform",
optional_override([](WASMPointerU8 sptr,
size_t strBytes,
WASMPointerF32 xptr,
const SkFont& font) -> sk_sp<SkTextBlob> {
const char* str = reinterpret_cast<const char*>(sptr);
// We don't really know how many the client has provided, so we
// claim a worst-case value (from text bytes), knowing the impl will
// only write as many as needed.
SkSpan<const SkRSXform> xforms = {
reinterpret_cast<const SkRSXform*>(xptr), strBytes};
return SkTextBlob::MakeFromRSXform(
str, strBytes, xforms, font, SkTextEncoding::kUTF8);
}),
allow_raw_pointers())
.class_function("_MakeFromRSXformGlyphs",
optional_override([](WASMPointerU16 gPtr,
size_t byteLen,
WASMPointerF32 xptr,
const SkFont& font) -> sk_sp<SkTextBlob> {
const size_t numGlyphs = byteLen >> 1;
SkSpan<const SkGlyphID> glyphs = {
reinterpret_cast<const SkGlyphID*>(gPtr), numGlyphs};
SkSpan<const SkRSXform> xforms = {
reinterpret_cast<const SkRSXform*>(xptr), numGlyphs};
return SkTextBlob::MakeFromRSXformGlyphs(glyphs, xforms, font);
}),
allow_raw_pointers())
.class_function("_MakeFromText",
optional_override([](WASMPointerU8 sptr,
size_t len,
const SkFont& font) -> sk_sp<SkTextBlob> {
const char* str = reinterpret_cast<const char*>(sptr);
return SkTextBlob::MakeFromText(
str, len, font, SkTextEncoding::kUTF8);
}),
allow_raw_pointers())
.class_function("_MakeFromGlyphs",
optional_override([](WASMPointerU16 gPtr,
size_t byteLen,
const SkFont& font) -> sk_sp<SkTextBlob> {
const SkGlyphID* glyphs = reinterpret_cast<const SkGlyphID*>(gPtr);
return SkTextBlob::MakeFromText(
glyphs, byteLen, font, SkTextEncoding::kGlyphID);
}),
allow_raw_pointers());
class_<SkTypeface>("Typeface")
.smart_ptr<sk_sp<SkTypeface>>("sk_sp<Typeface>")
.class_function("GetDefault",
optional_override([]() -> sk_sp<SkTypeface> {
#if defined(CK_EMBED_FONT)
if (SK_EMBEDDED_FONTS.count == 0) {
return nullptr;
}
static sk_sp<SkTypeface> default_face;
static SkOnce once;
once([] {
const SkEmbeddedResource& fontEntry =
SK_EMBEDDED_FONTS.entries[0];
auto stream = std::make_unique<SkMemoryStream>(
fontEntry.data, fontEntry.size, false);
default_face = SkTypeface_FreeType::MakeFromStream(
std::move(stream), SkFontArguments());
});
return default_face;
#else
return nullptr;
#endif
}),
allow_raw_pointers())
.class_function(
"_MakeTypefaceFromData",
optional_override([](WASMPointerU8 fPtr, int flen) -> sk_sp<SkTypeface> {
uint8_t* font = reinterpret_cast<uint8_t*>(fPtr);
std::unique_ptr<SkMemoryStream> stream(new SkMemoryStream());
stream->setMemoryOwned(font, flen);
return SkTypeface_FreeType::MakeFromStream(std::move(stream),
SkFontArguments());
}),
allow_raw_pointers())
.function("getFamilyName", optional_override([](SkTypeface& self) -> JSString {
SkString s;
self.getFamilyName(&s);
return emscripten::val(s.c_str());
}))
.function("_getGlyphIDs",
optional_override([](SkTypeface& self,
WASMPointerU8 sptr,
size_t strLen,
size_t expectedCodePoints,
WASMPointerU16 iPtr) -> int {
const char* str = reinterpret_cast<char*>(sptr);
SkSpan<SkGlyphID> glyphIDs = {reinterpret_cast<SkGlyphID*>(iPtr),
expectedCodePoints};
return self.textToGlyphs(str, strLen, SkTextEncoding::kUTF8, glyphIDs);
}));
#endif
class_<SkVertices>("Vertices")
.smart_ptr<sk_sp<SkVertices>>("sk_sp<Vertices>")
.function("_bounds",
optional_override([](SkVertices& self, WASMPointerF32 fPtr) -> void {
SkRect* output = reinterpret_cast<SkRect*>(fPtr);
output[0] = self.bounds();
}))
.function("uniqueID", &SkVertices::uniqueID);
// Not intended to be called directly by clients
class_<SkVertices::Builder>("_VerticesBuilder")
.constructor<SkVertices::VertexMode, int, int, uint32_t>()
.function("colors", optional_override([](SkVertices::Builder& self) -> WASMPointerF32 {
// Emscripten won't let us return bare pointers, but we can return ints
// just fine.
return reinterpret_cast<WASMPointerF32>(self.colors());
}))
.function("detach", &SkVertices::Builder::detach)
.function("indices", optional_override([](SkVertices::Builder& self) -> WASMPointerU16 {
// Emscripten won't let us return bare pointers, but we can return ints
// just fine.
return reinterpret_cast<WASMPointerU16>(self.indices());
}))
.function("positions",
optional_override([](SkVertices::Builder& self) -> WASMPointerF32 {
// Emscripten won't let us return bare pointers, but we can return ints
// just fine.
return reinterpret_cast<WASMPointerF32>(self.positions());
}))
.function("texCoords",
optional_override([](SkVertices::Builder& self) -> WASMPointerF32 {
// Emscripten won't let us return bare pointers, but we can return ints
// just fine.
return reinterpret_cast<WASMPointerF32>(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_<SkColorChannel>("ColorChannel")
.value("Red", SkColorChannel::kR)
.value("Green", SkColorChannel::kG)
.value("Blue", SkColorChannel::kB)
.value("Alpha", SkColorChannel::kA);
enum_<SkColorType>("ColorType")
.value("Alpha_8", SkColorType::kAlpha_8_SkColorType)
.value("RGB_565", SkColorType::kRGB_565_SkColorType)
.value("RGBA_8888", SkColorType::kRGBA_8888_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("RGB_F16F16F16x", SkColorType::kRGB_F16F16F16x_SkColorType)
.value("RGBA_F32", SkColorType::kRGBA_F32_SkColorType);
enum_<SkPathFillType>("FillType")
.value("Winding", SkPathFillType::kWinding)
.value("EvenOdd", SkPathFillType::kEvenOdd);
enum_<SkFilterMode>("FilterMode")
.value("Nearest", SkFilterMode::kNearest)
.value("Linear", SkFilterMode::kLinear);
// Only used to control the encode function.
// TODO(kjlubick): compile these out when the appropriate encoder is disabled.
enum_<SkEncodedImageFormat>("ImageFormat")
.value("PNG", SkEncodedImageFormat::kPNG)
.value("JPEG", SkEncodedImageFormat::kJPEG)
.value("WEBP", SkEncodedImageFormat::kWEBP);
enum_<SkMipmapMode>("MipmapMode")
.value("None", SkMipmapMode::kNone)
.value("Nearest", SkMipmapMode::kNearest)
.value("Linear", SkMipmapMode::kLinear);
enum_<SkPaint::Style>("PaintStyle")
.value("Fill", SkPaint::Style::kFill_Style)
.value("Stroke", SkPaint::Style::kStroke_Style);
enum_<SkPath1DPathEffect::Style>("Path1DEffect")
.value("Translate", SkPath1DPathEffect::Style::kTranslate_Style)
.value("Rotate", SkPath1DPathEffect::Style::kRotate_Style)
.value("Morph", SkPath1DPathEffect::Style::kMorph_Style);
#ifdef CK_INCLUDE_PATHOPS
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);
#endif
enum_<SkCanvas::PointMode>("PointMode")
.value("Points", SkCanvas::PointMode::kPoints_PointMode)
.value("Lines", SkCanvas::PointMode::kLines_PointMode)
.value("Polygon", SkCanvas::PointMode::kPolygon_PointMode);
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);
#ifndef CK_NO_FONTS
enum_<SkFontHinting>("FontHinting")
.value("None", SkFontHinting::kNone)
.value("Slight", SkFontHinting::kSlight)
.value("Normal", SkFontHinting::kNormal)
.value("Full", SkFontHinting::kFull);
enum_<SkFont::Edging>("FontEdging")
#ifndef CK_NO_ALIAS_FONT
.value("Alias", SkFont::Edging::kAlias)
#endif
.value("AntiAlias", SkFont::Edging::kAntiAlias)
.value("SubpixelAntiAlias", SkFont::Edging::kSubpixelAntiAlias);
#endif
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://emscripten.org/docs/porting/connecting_cpp_and_javascript/embind.html#value-types
value_object<SimpleImageInfo>("ImageInfo")
.field("width", &SimpleImageInfo::width)
.field("height", &SimpleImageInfo::height)
.field("colorType", &SimpleImageInfo::colorType)
.field("alphaType", &SimpleImageInfo::alphaType)
.field("colorSpace", &SimpleImageInfo::colorSpace);
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);
constant("MOVE_VERB", MOVE);
constant("LINE_VERB", LINE);
constant("QUAD_VERB", QUAD);
constant("CONIC_VERB", CONIC);
constant("CUBIC_VERB", CUBIC);
constant("CLOSE_VERB", CLOSE);
constant("SaveLayerInitWithPrevious",
(int)SkCanvas::SaveLayerFlagsSet::kInitWithPrevious_SaveLayerFlag);
constant("SaveLayerF16ColorType", (int)SkCanvas::SaveLayerFlagsSet::kF16ColorType);
constant("ShadowTransparentOccluder", (int)SkShadowFlags::kTransparentOccluder_ShadowFlag);
constant("ShadowGeometricOnly", (int)SkShadowFlags::kGeometricOnly_ShadowFlag);
constant("ShadowDirectionalLight", (int)SkShadowFlags::kDirectionalLight_ShadowFlag);
#ifdef CK_INCLUDE_PARAGRAPH
constant("_GlyphRunFlags_isWhiteSpace",
(int)skia::textlayout::Paragraph::kWhiteSpace_VisitorFlag);
#endif
}