mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 13:45:27 +00:00
254 lines
6.4 KiB
C++
254 lines
6.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "PathSkia.h"
|
|
#include <math.h>
|
|
#include "DrawTargetSkia.h"
|
|
#include "Logging.h"
|
|
#include "HelpersSkia.h"
|
|
#include "PathHelpers.h"
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
PathBuilderSkia::PathBuilderSkia(const Matrix& aTransform, const SkPath& aPath, FillRule aFillRule)
|
|
: mPath(aPath)
|
|
{
|
|
SkMatrix matrix;
|
|
GfxMatrixToSkiaMatrix(aTransform, matrix);
|
|
mPath.transform(matrix);
|
|
SetFillRule(aFillRule);
|
|
}
|
|
|
|
PathBuilderSkia::PathBuilderSkia(FillRule aFillRule)
|
|
{
|
|
SetFillRule(aFillRule);
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::SetFillRule(FillRule aFillRule)
|
|
{
|
|
mFillRule = aFillRule;
|
|
if (mFillRule == FILL_WINDING) {
|
|
mPath.setFillType(SkPath::kWinding_FillType);
|
|
} else {
|
|
mPath.setFillType(SkPath::kEvenOdd_FillType);
|
|
}
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::MoveTo(const Point &aPoint)
|
|
{
|
|
mPath.moveTo(SkFloatToScalar(aPoint.x), SkFloatToScalar(aPoint.y));
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::LineTo(const Point &aPoint)
|
|
{
|
|
if (!mPath.countPoints()) {
|
|
MoveTo(aPoint);
|
|
} else {
|
|
mPath.lineTo(SkFloatToScalar(aPoint.x), SkFloatToScalar(aPoint.y));
|
|
}
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::BezierTo(const Point &aCP1,
|
|
const Point &aCP2,
|
|
const Point &aCP3)
|
|
{
|
|
if (!mPath.countPoints()) {
|
|
MoveTo(aCP1);
|
|
}
|
|
mPath.cubicTo(SkFloatToScalar(aCP1.x), SkFloatToScalar(aCP1.y),
|
|
SkFloatToScalar(aCP2.x), SkFloatToScalar(aCP2.y),
|
|
SkFloatToScalar(aCP3.x), SkFloatToScalar(aCP3.y));
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::QuadraticBezierTo(const Point &aCP1,
|
|
const Point &aCP2)
|
|
{
|
|
if (!mPath.countPoints()) {
|
|
MoveTo(aCP1);
|
|
}
|
|
mPath.quadTo(SkFloatToScalar(aCP1.x), SkFloatToScalar(aCP1.y),
|
|
SkFloatToScalar(aCP2.x), SkFloatToScalar(aCP2.y));
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::Close()
|
|
{
|
|
mPath.close();
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::Arc(const Point &aOrigin, float aRadius, float aStartAngle,
|
|
float aEndAngle, bool aAntiClockwise)
|
|
{
|
|
ArcToBezier(this, aOrigin, Size(aRadius, aRadius), aStartAngle, aEndAngle, aAntiClockwise);
|
|
}
|
|
|
|
Point
|
|
PathBuilderSkia::CurrentPoint() const
|
|
{
|
|
int pointCount = mPath.countPoints();
|
|
if (!pointCount) {
|
|
return Point(0, 0);
|
|
}
|
|
SkPoint point = mPath.getPoint(pointCount - 1);
|
|
return Point(SkScalarToFloat(point.fX), SkScalarToFloat(point.fY));
|
|
}
|
|
|
|
TemporaryRef<Path>
|
|
PathBuilderSkia::Finish()
|
|
{
|
|
RefPtr<PathSkia> path = new PathSkia(mPath, mFillRule);
|
|
return path;
|
|
}
|
|
|
|
void
|
|
PathBuilderSkia::AppendPath(const SkPath &aPath)
|
|
{
|
|
mPath.addPath(aPath);
|
|
}
|
|
|
|
TemporaryRef<PathBuilder>
|
|
PathSkia::CopyToBuilder(FillRule aFillRule) const
|
|
{
|
|
return TransformedCopyToBuilder(Matrix(), aFillRule);
|
|
}
|
|
|
|
TemporaryRef<PathBuilder>
|
|
PathSkia::TransformedCopyToBuilder(const Matrix &aTransform, FillRule aFillRule) const
|
|
{
|
|
RefPtr<PathBuilderSkia> builder = new PathBuilderSkia(aTransform, mPath, aFillRule);
|
|
return builder;
|
|
}
|
|
|
|
bool
|
|
PathSkia::ContainsPoint(const Point &aPoint, const Matrix &aTransform) const
|
|
{
|
|
Matrix inverse = aTransform;
|
|
inverse.Invert();
|
|
Point transformed = inverse * aPoint;
|
|
|
|
Rect bounds = GetBounds(aTransform);
|
|
|
|
if (aPoint.x < bounds.x || aPoint.y < bounds.y ||
|
|
aPoint.x > bounds.XMost() || aPoint.y > bounds.YMost()) {
|
|
return false;
|
|
}
|
|
|
|
SkRegion pointRect;
|
|
pointRect.setRect(int32_t(SkFloatToScalar(transformed.x - 1)),
|
|
int32_t(SkFloatToScalar(transformed.y - 1)),
|
|
int32_t(SkFloatToScalar(transformed.x + 1)),
|
|
int32_t(SkFloatToScalar(transformed.y + 1)));
|
|
|
|
SkRegion pathRegion;
|
|
|
|
return pathRegion.setPath(mPath, pointRect);
|
|
}
|
|
|
|
static Rect SkRectToRect(const SkRect& aBounds)
|
|
{
|
|
return Rect(SkScalarToFloat(aBounds.fLeft),
|
|
SkScalarToFloat(aBounds.fTop),
|
|
SkScalarToFloat(aBounds.fRight - aBounds.fLeft),
|
|
SkScalarToFloat(aBounds.fBottom - aBounds.fTop));
|
|
}
|
|
|
|
bool
|
|
PathSkia::StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
|
|
const Point &aPoint,
|
|
const Matrix &aTransform) const
|
|
{
|
|
Matrix inverse = aTransform;
|
|
inverse.Invert();
|
|
Point transformed = inverse * aPoint;
|
|
|
|
SkPaint paint;
|
|
StrokeOptionsToPaint(paint, aStrokeOptions);
|
|
|
|
SkPath strokePath;
|
|
paint.getFillPath(mPath, &strokePath);
|
|
|
|
Rect bounds = aTransform.TransformBounds(SkRectToRect(strokePath.getBounds()));
|
|
|
|
if (aPoint.x < bounds.x || aPoint.y < bounds.y ||
|
|
aPoint.x > bounds.XMost() || aPoint.y > bounds.YMost()) {
|
|
return false;
|
|
}
|
|
|
|
SkRegion pointRect;
|
|
pointRect.setRect(int32_t(SkFloatToScalar(transformed.x - 1)),
|
|
int32_t(SkFloatToScalar(transformed.y - 1)),
|
|
int32_t(SkFloatToScalar(transformed.x + 1)),
|
|
int32_t(SkFloatToScalar(transformed.y + 1)));
|
|
|
|
SkRegion pathRegion;
|
|
|
|
return pathRegion.setPath(strokePath, pointRect);
|
|
}
|
|
|
|
Rect
|
|
PathSkia::GetBounds(const Matrix &aTransform) const
|
|
{
|
|
Rect bounds = SkRectToRect(mPath.getBounds());
|
|
return aTransform.TransformBounds(bounds);
|
|
}
|
|
|
|
Rect
|
|
PathSkia::GetStrokedBounds(const StrokeOptions &aStrokeOptions,
|
|
const Matrix &aTransform) const
|
|
{
|
|
SkPaint paint;
|
|
StrokeOptionsToPaint(paint, aStrokeOptions);
|
|
|
|
SkPath result;
|
|
paint.getFillPath(mPath, &result);
|
|
|
|
Rect bounds = SkRectToRect(result.getBounds());
|
|
return aTransform.TransformBounds(bounds);
|
|
}
|
|
|
|
void
|
|
PathSkia::StreamToSink(PathSink *aSink) const
|
|
{
|
|
SkPath::RawIter iter(mPath);
|
|
|
|
SkPoint points[4];
|
|
SkPath::Verb currentVerb;
|
|
while ((currentVerb = iter.next(points)) != SkPath::kDone_Verb) {
|
|
switch (currentVerb) {
|
|
case SkPath::kMove_Verb:
|
|
aSink->MoveTo(SkPointToPoint(points[0]));
|
|
break;
|
|
case SkPath::kLine_Verb:
|
|
aSink->LineTo(SkPointToPoint(points[1]));
|
|
break;
|
|
case SkPath::kCubic_Verb:
|
|
aSink->BezierTo(SkPointToPoint(points[1]),
|
|
SkPointToPoint(points[2]),
|
|
SkPointToPoint(points[3]));
|
|
break;
|
|
case SkPath::kQuad_Verb:
|
|
aSink->QuadraticBezierTo(SkPointToPoint(points[1]),
|
|
SkPointToPoint(points[2]));
|
|
break;
|
|
case SkPath::kClose_Verb:
|
|
aSink->Close();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false);
|
|
// Unexpected verb found in path!
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|