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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flutter/lib/ui/painting/path.h"
#include <cmath>
#include "flutter/lib/ui/floating_point.h"
#include "flutter/lib/ui/painting/matrix.h"
#include "flutter/lib/ui/ui_dart_state.h"
#include "third_party/tonic/converter/dart_converter.h"
#include "third_party/tonic/dart_args.h"
#include "third_party/tonic/dart_binding_macros.h"
#include "third_party/tonic/dart_library_natives.h"
using tonic::ToDart;
namespace flutter {
typedef CanvasPath Path;
IMPLEMENT_WRAPPERTYPEINFO(ui, Path);
CanvasPath::CanvasPath()
: path_tracker_(UIDartState::Current()->GetVolatilePathTracker()),
tracked_path_(std::make_shared<VolatilePathTracker::TrackedPath>()) {
FML_DCHECK(path_tracker_);
resetVolatility();
}
CanvasPath::~CanvasPath() = default;
void CanvasPath::resetVolatility() {
if (!tracked_path_->tracking_volatility) {
mutable_path().setIsVolatile(true);
tracked_path_->frame_count = 0;
tracked_path_->tracking_volatility = true;
path_tracker_->Track(tracked_path_);
}
}
int CanvasPath::getFillType() {
return static_cast<int>(path().getFillType());
}
void CanvasPath::setFillType(int fill_type) {
mutable_path().setFillType(static_cast<SkPathFillType>(fill_type));
resetVolatility();
}
void CanvasPath::moveTo(double x, double y) {
mutable_path().moveTo(SafeNarrow(x), SafeNarrow(y));
resetVolatility();
}
void CanvasPath::relativeMoveTo(double x, double y) {
mutable_path().rMoveTo(SafeNarrow(x), SafeNarrow(y));
resetVolatility();
}
void CanvasPath::lineTo(double x, double y) {
mutable_path().lineTo(SafeNarrow(x), SafeNarrow(y));
resetVolatility();
}
void CanvasPath::relativeLineTo(double x, double y) {
mutable_path().rLineTo(SafeNarrow(x), SafeNarrow(y));
resetVolatility();
}
void CanvasPath::quadraticBezierTo(double x1, double y1, double x2, double y2) {
mutable_path().quadTo(SafeNarrow(x1), SafeNarrow(y1), SafeNarrow(x2),
SafeNarrow(y2));
resetVolatility();
}
void CanvasPath::relativeQuadraticBezierTo(double x1,
double y1,
double x2,
double y2) {
mutable_path().rQuadTo(SafeNarrow(x1), SafeNarrow(y1), SafeNarrow(x2),
SafeNarrow(y2));
resetVolatility();
}
void CanvasPath::cubicTo(double x1,
double y1,
double x2,
double y2,
double x3,
double y3) {
mutable_path().cubicTo(SafeNarrow(x1), SafeNarrow(y1), SafeNarrow(x2),
SafeNarrow(y2), SafeNarrow(x3), SafeNarrow(y3));
resetVolatility();
}
void CanvasPath::relativeCubicTo(double x1,
double y1,
double x2,
double y2,
double x3,
double y3) {
mutable_path().rCubicTo(SafeNarrow(x1), SafeNarrow(y1), SafeNarrow(x2),
SafeNarrow(y2), SafeNarrow(x3), SafeNarrow(y3));
resetVolatility();
}
void CanvasPath::conicTo(double x1, double y1, double x2, double y2, double w) {
mutable_path().conicTo(SafeNarrow(x1), SafeNarrow(y1), SafeNarrow(x2),
SafeNarrow(y2), SafeNarrow(w));
resetVolatility();
}
void CanvasPath::relativeConicTo(double x1,
double y1,
double x2,
double y2,
double w) {
mutable_path().rConicTo(SafeNarrow(x1), SafeNarrow(y1), SafeNarrow(x2),
SafeNarrow(y2), SafeNarrow(w));
resetVolatility();
}
void CanvasPath::arcTo(double left,
double top,
double right,
double bottom,
double startAngle,
double sweepAngle,
bool forceMoveTo) {
mutable_path().arcTo(
SkRect::MakeLTRB(SafeNarrow(left), SafeNarrow(top), SafeNarrow(right),
SafeNarrow(bottom)),
SafeNarrow(startAngle) * 180.0f / static_cast<float>(M_PI),
SafeNarrow(sweepAngle) * 180.0f / static_cast<float>(M_PI), forceMoveTo);
resetVolatility();
}
void CanvasPath::arcToPoint(double arcEndX,
double arcEndY,
double radiusX,
double radiusY,
double xAxisRotation,
bool isLargeArc,
bool isClockwiseDirection) {
const auto arcSize = isLargeArc ? SkPath::ArcSize::kLarge_ArcSize
: SkPath::ArcSize::kSmall_ArcSize;
const auto direction =
isClockwiseDirection ? SkPathDirection::kCW : SkPathDirection::kCCW;
mutable_path().arcTo(SafeNarrow(radiusX), SafeNarrow(radiusY),
SafeNarrow(xAxisRotation), arcSize, direction,
SafeNarrow(arcEndX), SafeNarrow(arcEndY));
resetVolatility();
}
void CanvasPath::relativeArcToPoint(double arcEndDeltaX,
double arcEndDeltaY,
double radiusX,
double radiusY,
double xAxisRotation,
bool isLargeArc,
bool isClockwiseDirection) {
const auto arcSize = isLargeArc ? SkPath::ArcSize::kLarge_ArcSize
: SkPath::ArcSize::kSmall_ArcSize;
const auto direction =
isClockwiseDirection ? SkPathDirection::kCW : SkPathDirection::kCCW;
mutable_path().rArcTo(SafeNarrow(radiusX), SafeNarrow(radiusY),
SafeNarrow(xAxisRotation), arcSize, direction,
SafeNarrow(arcEndDeltaX), SafeNarrow(arcEndDeltaY));
resetVolatility();
}
void CanvasPath::addRect(double left, double top, double right, double bottom) {
mutable_path().addRect(SkRect::MakeLTRB(SafeNarrow(left), SafeNarrow(top),
SafeNarrow(right),
SafeNarrow(bottom)));
resetVolatility();
}
void CanvasPath::addOval(double left, double top, double right, double bottom) {
mutable_path().addOval(SkRect::MakeLTRB(SafeNarrow(left), SafeNarrow(top),
SafeNarrow(right),
SafeNarrow(bottom)));
resetVolatility();
}
void CanvasPath::addArc(double left,
double top,
double right,
double bottom,
double startAngle,
double sweepAngle) {
mutable_path().addArc(
SkRect::MakeLTRB(SafeNarrow(left), SafeNarrow(top), SafeNarrow(right),
SafeNarrow(bottom)),
SafeNarrow(startAngle) * 180.0f / static_cast<float>(M_PI),
SafeNarrow(sweepAngle) * 180.0f / static_cast<float>(M_PI));
resetVolatility();
}
void CanvasPath::addPolygon(const tonic::Float32List& points, bool close) {
mutable_path().addPoly(reinterpret_cast<const SkPoint*>(points.data()),
points.num_elements() / 2, close);
resetVolatility();
}
void CanvasPath::addRRect(const RRect& rrect) {
mutable_path().addRRect(rrect.sk_rrect);
resetVolatility();
}
void CanvasPath::addPath(CanvasPath* path, double dx, double dy) {
if (!path) {
Dart_ThrowException(ToDart("Path.addPath called with non-genuine Path."));
return;
}
mutable_path().addPath(path->path(), SafeNarrow(dx), SafeNarrow(dy),
SkPath::kAppend_AddPathMode);
resetVolatility();
}
void CanvasPath::addPathWithMatrix(CanvasPath* path,
double dx,
double dy,
Dart_Handle matrix4_handle) {
tonic::Float64List matrix4(matrix4_handle);
if (!path) {
matrix4.Release();
Dart_ThrowException(
ToDart("Path.addPathWithMatrix called with non-genuine Path."));
return;
}
SkMatrix matrix = ToSkMatrix(matrix4);
matrix4.Release();
matrix.setTranslateX(matrix.getTranslateX() + SafeNarrow(dx));
matrix.setTranslateY(matrix.getTranslateY() + SafeNarrow(dy));
mutable_path().addPath(path->path(), matrix, SkPath::kAppend_AddPathMode);
resetVolatility();
}
void CanvasPath::extendWithPath(CanvasPath* path, double dx, double dy) {
if (!path) {
Dart_ThrowException(
ToDart("Path.extendWithPath called with non-genuine Path."));
return;
}
mutable_path().addPath(path->path(), SafeNarrow(dx), SafeNarrow(dy),
SkPath::kExtend_AddPathMode);
resetVolatility();
}
void CanvasPath::extendWithPathAndMatrix(CanvasPath* path,
double dx,
double dy,
Dart_Handle matrix4_handle) {
tonic::Float64List matrix4(matrix4_handle);
if (!path) {
matrix4.Release();
Dart_ThrowException(
ToDart("Path.addPathWithMatrix called with non-genuine Path."));
return;
}
SkMatrix matrix = ToSkMatrix(matrix4);
matrix4.Release();
matrix.setTranslateX(matrix.getTranslateX() + SafeNarrow(dx));
matrix.setTranslateY(matrix.getTranslateY() + SafeNarrow(dy));
mutable_path().addPath(path->path(), matrix, SkPath::kExtend_AddPathMode);
resetVolatility();
}
void CanvasPath::close() {
mutable_path().close();
resetVolatility();
}
void CanvasPath::reset() {
mutable_path().reset();
resetVolatility();
}
bool CanvasPath::contains(double x, double y) {
return path().contains(SafeNarrow(x), SafeNarrow(y));
}
void CanvasPath::shift(Dart_Handle path_handle, double dx, double dy) {
fml::RefPtr<CanvasPath> path = Create(path_handle);
auto& other_mutable_path = path->mutable_path();
mutable_path().offset(SafeNarrow(dx), SafeNarrow(dy), &other_mutable_path);
resetVolatility();
}
void CanvasPath::transform(Dart_Handle path_handle,
Dart_Handle matrix4_handle) {
tonic::Float64List matrix4(matrix4_handle);
auto sk_matrix = ToSkMatrix(matrix4);
matrix4.Release();
fml::RefPtr<CanvasPath> path = Create(path_handle);
auto& other_mutable_path = path->mutable_path();
mutable_path().transform(sk_matrix, &other_mutable_path);
}
tonic::Float32List CanvasPath::getBounds() {
tonic::Float32List rect(Dart_NewTypedData(Dart_TypedData_kFloat32, 4));
const SkRect& bounds = path().getBounds();
rect[0] = bounds.left();
rect[1] = bounds.top();
rect[2] = bounds.right();
rect[3] = bounds.bottom();
return rect;
}
bool CanvasPath::op(CanvasPath* path1, CanvasPath* path2, int operation) {
bool result = Op(path1->path(), path2->path(),
static_cast<SkPathOp>(operation), &tracked_path_->path);
resetVolatility();
return result;
}
void CanvasPath::clone(Dart_Handle path_handle) {
fml::RefPtr<CanvasPath> path = Create(path_handle);
// per Skia docs, this will create a fast copy
// data is shared until the source path or dest path are mutated
path->mutable_path() = this->path();
}
} // namespace flutter