static void scaleMatrix(const SkPath& one, const SkPath& two, SkMatrix& scale) {
SkRect larger = one.getBounds();
larger.join(two.getBounds());
SkScalar largerWidth = larger.width();
if (largerWidth < 4) {
largerWidth = 4;
}
SkScalar largerHeight = larger.height();
if (largerHeight < 4) {
largerHeight = 4;
}
SkScalar hScale = (bitWidth - 2) / largerWidth;
SkScalar vScale = (bitHeight - 2) / largerHeight;
scale.reset();
scale.preScale(hScale, vScale);
larger.fLeft *= hScale;
larger.fRight *= hScale;
larger.fTop *= vScale;
larger.fBottom *= vScale;
SkScalar dx = -16000 > larger.fLeft ? -16000 - larger.fLeft
: 16000 < larger.fRight ? 16000 - larger.fRight : 0;
SkScalar dy = -16000 > larger.fTop ? -16000 - larger.fTop
: 16000 < larger.fBottom ? 16000 - larger.fBottom : 0;
scale.postTranslate(dx, dy);
}
// doesn't work yet
void comparePathsTiny(const SkPath& one, const SkPath& two) {
const SkRect& bounds1 = one.getBounds();
const SkRect& bounds2 = two.getBounds();
SkRect larger = bounds1;
larger.join(bounds2);
SkBitmap bits;
int bitWidth = SkScalarCeil(larger.width()) + 2;
int bitHeight = SkScalarCeil(larger.height()) + 2;
bits.setConfig(SkBitmap::kA1_Config, bitWidth * 2, bitHeight);
bits.allocPixels();
SkCanvas canvas(bits);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
canvas.save();
canvas.translate(-bounds1.fLeft + 1, -bounds1.fTop + 1);
canvas.drawPath(one, paint);
canvas.restore();
canvas.save();
canvas.translate(-bounds2.fLeft + 1, -bounds2.fTop + 1);
canvas.drawPath(two, paint);
canvas.restore();
for (int y = 0; y < bitHeight; ++y) {
uint8_t* addr1 = bits.getAddr1(0, y);
uint8_t* addr2 = bits.getAddr1(bitWidth, y);
for (int x = 0; x < bits.rowBytes(); ++x) {
SkASSERT(addr1[x] == addr2[x]);
}
}
}
static void test_path_bounds(skiatest::Reporter* reporter) {
SkPath path;
SkAAClip clip;
const int height = 40;
const SkScalar sheight = SkIntToScalar(height);
path.addOval(SkRect::MakeWH(sheight, sheight));
REPORTER_ASSERT(reporter, sheight == path.getBounds().height());
clip.setPath(path, nullptr, true);
REPORTER_ASSERT(reporter, height == clip.getBounds().height());
// this is the trimmed height of this cubic (with aa). The critical thing
// for this test is that it is less than height, which represents just
// the bounds of the path's control-points.
//
// This used to fail until we tracked the MinY in the BuilderBlitter.
//
const int teardrop_height = 12;
path.reset();
imoveTo(path, 0, 20);
icubicTo(path, 40, 40, 40, 0, 0, 20);
REPORTER_ASSERT(reporter, sheight == path.getBounds().height());
clip.setPath(path, nullptr, true);
REPORTER_ASSERT(reporter, teardrop_height == clip.getBounds().height());
}
TessellatingPathBatch(const GrColor& color,
const SkPath& path,
const GrStrokeInfo& stroke,
const SkMatrix& viewMatrix,
const SkRect& clipBounds)
: INHERITED(ClassID())
, fColor(color)
, fPath(path)
, fStroke(stroke)
, fViewMatrix(viewMatrix) {
const SkRect& pathBounds = path.getBounds();
fClipBounds = clipBounds;
// Because the clip bounds are used to add a contour for inverse fills, they must also
// include the path bounds.
fClipBounds.join(pathBounds);
if (path.isInverseFillType()) {
fBounds = fClipBounds;
} else {
fBounds = path.getBounds();
}
if (!stroke.isFillStyle()) {
SkScalar radius = SkScalarHalf(stroke.getWidth());
if (stroke.getJoin() == SkPaint::kMiter_Join) {
SkScalar scale = stroke.getMiter();
if (scale > SK_Scalar1) {
radius = SkScalarMul(radius, scale);
}
}
fBounds.outset(radius, radius);
}
viewMatrix.mapRect(&fBounds);
}
bool drawAsciiPaths(const SkPath& one, const SkPath& two,
bool drawPaths) {
if (!drawPaths) {
return true;
}
if (gShowAsciiPaths) {
showPath(one, "one:");
showPath(two, "two:");
}
const SkRect& bounds1 = one.getBounds();
const SkRect& bounds2 = two.getBounds();
SkRect larger = bounds1;
larger.join(bounds2);
SkBitmap bits;
char out[256];
int bitWidth = SkScalarCeil(larger.width()) + 2;
if (bitWidth * 2 + 1 >= (int) sizeof(out)) {
return false;
}
int bitHeight = SkScalarCeil(larger.height()) + 2;
if (bitHeight >= (int) sizeof(out)) {
return false;
}
bits.setConfig(SkBitmap::kARGB_8888_Config, bitWidth * 2, bitHeight);
bits.allocPixels();
SkCanvas canvas(bits);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
canvas.save();
canvas.translate(-bounds1.fLeft + 1, -bounds1.fTop + 1);
canvas.drawPath(one, paint);
canvas.restore();
canvas.save();
canvas.translate(-bounds2.fLeft + 1 + bitWidth, -bounds2.fTop + 1);
canvas.drawPath(two, paint);
canvas.restore();
for (int y = 0; y < bitHeight; ++y) {
uint32_t* addr1 = bits.getAddr32(0, y);
int x;
char* outPtr = out;
for (x = 0; x < bitWidth; ++x) {
*outPtr++ = addr1[x] == (uint32_t) -1 ? '_' : 'x';
}
*outPtr++ = '|';
for (x = bitWidth; x < bitWidth * 2; ++x) {
*outPtr++ = addr1[x] == (uint32_t) -1 ? '_' : 'x';
}
*outPtr++ = '\0';
SkDebugf("%s\n", out);
}
return true;
}
static void check_convex_bounds(skiatest::Reporter* reporter, const SkPath& p,
const SkRect& bounds) {
REPORTER_ASSERT(reporter, p.isConvex());
REPORTER_ASSERT(reporter, p.getBounds() == bounds);
SkPath p2(p);
REPORTER_ASSERT(reporter, p2.isConvex());
REPORTER_ASSERT(reporter, p2.getBounds() == bounds);
SkPath other;
other.swap(p2);
REPORTER_ASSERT(reporter, other.isConvex());
REPORTER_ASSERT(reporter, other.getBounds() == bounds);
}
static void test_maskFromPath(const SkPath& path) {
SkIRect bounds;
path.getBounds().roundOut(&bounds);
SkPaint paint;
paint.setAntiAlias(true);
SkAutoTUnref<SkCanvas> path_canvas(MakeCanvas(bounds));
path_canvas->drawPath(path, paint);
SkAutoTUnref<SkCanvas> rect_canvas(MakeCanvas(bounds));
drawRectAsPath(rect_canvas, path.getBounds(), paint);
compare_canvas(path_canvas, rect_canvas);
}
static void test_cubic2() {
const char* str = "M2242 -590088L-377758 9.94099e+07L-377758 9.94099e+07L2242 -590088Z";
SkPath path;
SkParsePath::FromSVGString(str, &path);
{
#ifdef SK_BUILD_FOR_WIN
// windows doesn't have strtof
float x = (float)strtod("9.94099e+07", NULL);
#else
float x = strtof("9.94099e+07", NULL);
#endif
int ix = (int)x;
int fx = (int)(x * 65536);
int ffx = SkScalarToFixed(x);
printf("%g %x %x %x\n", x, ix, fx, ffx);
SkRect r = path.getBounds();
SkIRect ir;
r.round(&ir);
printf("[%g %g %g %g] [%x %x %x %x]\n",
SkScalarToDouble(r.fLeft), SkScalarToDouble(r.fTop),
SkScalarToDouble(r.fRight), SkScalarToDouble(r.fBottom),
ir.fLeft, ir.fTop, ir.fRight, ir.fBottom);
}
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, 300, 200);
bitmap.allocPixels();
SkCanvas canvas(bitmap);
SkPaint paint;
paint.setAntiAlias(true);
canvas.drawPath(path, paint);
}
bool GrAAConvexPathRenderer::onDrawPath(GrDrawTarget* target,
GrPipelineBuilder* pipelineBuilder,
GrColor color,
const SkMatrix& vm,
const SkPath& path,
const GrStrokeInfo&,
bool antiAlias) {
if (path.isEmpty()) {
return true;
}
// We outset our vertices one pixel and add one more pixel for precision.
// TODO create tighter bounds when we start reordering.
SkRect devRect = path.getBounds();
vm.mapRect(&devRect);
devRect.outset(2, 2);
AAConvexPathBatch::Geometry geometry;
geometry.fColor = color;
geometry.fViewMatrix = vm;
geometry.fPath = path;
SkAutoTUnref<GrBatch> batch(AAConvexPathBatch::Create(geometry));
target->drawBatch(pipelineBuilder, batch, &devRect);
return true;
}
void SkGScalerContext::generateMetrics(SkGlyph* glyph) {
fProxy->getMetrics(glyph);
SkVector advance;
fMatrix.mapXY(SkFloatToScalar(glyph->fAdvanceX),
SkFloatToScalar(glyph->fAdvanceY), &advance);
glyph->fAdvanceX = SkScalarToFloat(advance.fX);
glyph->fAdvanceY = SkScalarToFloat(advance.fY);
SkPath path;
fProxy->getPath(*glyph, &path);
path.transform(fMatrix);
SkRect storage;
const SkPaint& paint = fFace->paint();
const SkRect& newBounds = paint.doComputeFastBounds(path.getBounds(),
&storage,
SkPaint::kFill_Style);
SkIRect ibounds;
newBounds.roundOut(&ibounds);
glyph->fLeft = ibounds.fLeft;
glyph->fTop = ibounds.fTop;
glyph->fWidth = ibounds.width();
glyph->fHeight = ibounds.height();
glyph->fMaskFormat = SkMask::kARGB32_Format;
}
DEFINE_BATCH_CLASS_ID
AAConvexPathBatch(GrColor color, const SkMatrix& viewMatrix, const SkPath& path)
: INHERITED(ClassID()) {
fGeoData.emplace_back(Geometry{color, viewMatrix, path});
this->setTransformedBounds(path.getBounds(), viewMatrix, HasAABloat::kYes,
IsZeroArea::kNo);
}
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.f)),
int32_t(SkFloatToScalar(transformed.y - 1.f)),
int32_t(SkFloatToScalar(transformed.x + 1.f)),
int32_t(SkFloatToScalar(transformed.y + 1.f)));
SkRegion pathRegion;
return pathRegion.setPath(strokePath, pointRect);
}
GrGLPath::GrGLPath(GrGpuGL* gpu, const SkPath& path) : INHERITED(gpu, kIsWrapped) {
#ifndef SK_SCALAR_IS_FLOAT
GrCrash("Assumes scalar is float.");
#endif
SkASSERT(!path.isEmpty());
GL_CALL_RET(fPathID, GenPaths(1));
SkSTArray<16, GrGLubyte, true> pathCommands;
SkSTArray<16, SkPoint, true> pathPoints;
int verbCnt = path.countVerbs();
int pointCnt = path.countPoints();
pathCommands.resize_back(verbCnt);
pathPoints.resize_back(pointCnt);
// TODO: Direct access to path points since we could pass them on directly.
path.getPoints(&pathPoints[0], pointCnt);
path.getVerbs(&pathCommands[0], verbCnt);
GR_DEBUGCODE(int numPts = 0);
for (int i = 0; i < verbCnt; ++i) {
SkPath::Verb v = static_cast<SkPath::Verb>(pathCommands[i]);
pathCommands[i] = verb_to_gl_path_cmd(v);
GR_DEBUGCODE(numPts += num_pts(v));
}
GrAssert(pathPoints.count() == numPts);
GL_CALL(PathCommands(fPathID,
verbCnt, &pathCommands[0],
2 * pointCnt, GR_GL_FLOAT, &pathPoints[0]));
fBounds = path.getBounds();
}
bool SkRasterClip::op(const SkPath& path, const SkMatrix& matrix, const SkIRect& bounds,
SkRegion::Op op, bool doAA) {
AUTO_RASTERCLIP_VALIDATE(*this);
if (fForceConservativeRects) {
SkIRect ir;
switch (mutate_conservative_op(&op, path.isInverseFillType())) {
case kDoNothing_MutateResult:
return !this->isEmpty();
case kReplaceClippedAgainstGlobalBounds_MutateResult:
ir = bounds;
break;
case kContinue_MutateResult: {
SkRect bounds = path.getBounds();
matrix.mapRect(&bounds);
ir = bounds.roundOut();
break;
}
}
return this->op(ir, op);
}
// base is used to limit the size (and therefore memory allocation) of the
// region that results from scan converting devPath.
SkRegion base;
SkPath devPath;
if (matrix.isIdentity()) {
devPath = path;
} else {
path.transform(matrix, &devPath);
devPath.setIsVolatile(true);
}
if (SkRegion::kIntersect_Op == op) {
// since we are intersect, we can do better (tighter) with currRgn's
// bounds, than just using the device. However, if currRgn is complex,
// our region blitter may hork, so we do that case in two steps.
if (this->isRect()) {
// FIXME: we should also be able to do this when this->isBW(),
// but relaxing the test above triggers GM asserts in
// SkRgnBuilder::blitH(). We need to investigate what's going on.
return this->setPath(devPath, this->bwRgn(), doAA);
} else {
base.setRect(this->getBounds());
SkRasterClip clip(fForceConservativeRects);
clip.setPath(devPath, base, doAA);
return this->op(clip, op);
}
} else {
base.setRect(bounds);
if (SkRegion::kReplace_Op == op) {
return this->setPath(devPath, base, doAA);
} else {
SkRasterClip clip(fForceConservativeRects);
clip.setPath(devPath, base, doAA);
return this->op(clip, op);
}
}
}
static void scaleMatrix(const SkPath& one, const SkPath& two, SkMatrix& scale) {
SkRect larger = one.getBounds();
larger.join(two.getBounds());
SkScalar largerWidth = larger.width();
if (largerWidth < 4) {
largerWidth = 4;
}
SkScalar largerHeight = larger.height();
if (largerHeight < 4) {
largerHeight = 4;
}
SkScalar hScale = (bitWidth - 2) / largerWidth;
SkScalar vScale = (bitHeight - 2) / largerHeight;
scale.reset();
scale.preScale(hScale, vScale);
}
void onDraw(const int loops, SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(2);
if (fRound) {
paint.setStrokeJoin(SkPaint::kRound_Join);
}
this->setupPaint(&paint);
const SkRect r = fPath.getBounds();
switch (fAlign) {
case kLeft_Align:
canvas->translate(-r.left(), 0);
break;
case kMiddle_Align:
break;
case kRight_Align:
canvas->translate(640 - r.right(), 0);
break;
}
for (int i = 0; i < loops; i++) {
canvas->drawPath(fPath, paint);
}
}
static void lettersToBitmap2(SkBitmap* dst, const char chars[],
const SkPaint& original, SkBitmap::Config config) {
SkPath path;
SkScalar x = 0;
SkScalar width;
SkPath p;
for (size_t i = 0; i < strlen(chars); i++) {
original.getTextPath(&chars[i], 1, x, 0, &p);
path.addPath(p);
original.getTextWidths(&chars[i], 1, &width);
x += width;
}
SkRect bounds = path.getBounds();
SkScalar sw = -original.getStrokeWidth();
bounds.inset(sw, sw);
path.offset(-bounds.fLeft, -bounds.fTop);
bounds.offset(-bounds.fLeft, -bounds.fTop);
int w = SkScalarRound(bounds.width());
int h = SkScalarRound(bounds.height());
SkPaint paint(original);
paint.setAntiAlias(true);
paint.setXfermodeMode(SkXfermode::kDstATop_Mode);
paint.setColor(original.getColor());
paint.setStyle(SkPaint::kStroke_Style);
dst->setConfig(config, w, h);
dst->allocPixels();
dst->eraseColor(SK_ColorWHITE);
SkCanvas canvas(*dst);
canvas.drawPath(path, paint);
}
bool GrAADistanceFieldPathRenderer::canDrawPath(const GrDrawTarget* target,
const GrPipelineBuilder* pipelineBuilder,
const SkMatrix& viewMatrix,
const SkPath& path,
const GrStrokeInfo& stroke,
bool antiAlias) const {
// TODO: Support inverse fill
// TODO: Support strokes
if (!target->caps()->shaderCaps()->shaderDerivativeSupport() || !antiAlias
|| path.isInverseFillType() || path.isVolatile() || !stroke.isFillStyle()) {
return false;
}
// currently don't support perspective
if (viewMatrix.hasPerspective()) {
return false;
}
// only support paths smaller than 64x64, scaled to less than 256x256
// the goal is to accelerate rendering of lots of small paths that may be scaling
SkScalar maxScale = viewMatrix.getMaxScale();
const SkRect& bounds = path.getBounds();
SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height());
return maxDim < 64.f && maxDim * maxScale < 256.f;
}
static SkBitmap createBitmap(const SkPath& path) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config,
SkImageWidget::kImageWidgetWidth,
SkImageWidget::kImageWidgetHeight);
bitmap.allocPixels();
bitmap.eraseColor(SK_ColorWHITE);
SkDevice* device = new SkDevice(bitmap);
SkCanvas canvas(device);
device->unref();
const SkRect& bounds = path.getBounds();
if (bounds.width() > bounds.height()) {
canvas.scale(SkDoubleToScalar((0.9*SkImageWidget::kImageWidgetWidth)/bounds.width()),
SkDoubleToScalar((0.9*SkImageWidget::kImageWidgetHeight)/bounds.width()));
} else {
canvas.scale(SkDoubleToScalar((0.9*SkImageWidget::kImageWidgetWidth)/bounds.height()),
SkDoubleToScalar((0.9*SkImageWidget::kImageWidgetHeight)/bounds.height()));
}
canvas.translate(-bounds.fLeft+2, -bounds.fTop+2);
SkPaint p;
p.setColor(SK_ColorBLACK);
p.setStyle(SkPaint::kStroke_Style);
canvas.drawPath(path, p);
return bitmap;
}
bool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, SkStrokeRec*) {
if (!fMatrixIsInvertible) {
return false;
}
SkPath tmp;
SkIRect ir;
src.transform(fInverse, &tmp);
tmp.getBounds().round(&ir);
if (!ir.isEmpty()) {
this->begin(ir, dst);
SkRegion rgn;
rgn.setPath(tmp, SkRegion(ir));
SkRegion::Iterator iter(rgn);
for (; !iter.done(); iter.next()) {
const SkIRect& rect = iter.rect();
for (int y = rect.fTop; y < rect.fBottom; ++y) {
this->nextSpan(rect.fLeft, y, rect.width(), dst);
}
}
this->end(dst);
}
return true;
}
void RandomScalerContext::generateMetrics(SkGlyph* glyph) {
// Here we will change the mask format of the glyph
// NOTE: this may be overridden by the base class (e.g. if a mask filter is applied).
switch (glyph->getGlyphID() % 4) {
case 0: glyph->fMaskFormat = SkMask::kLCD16_Format; break;
case 1: glyph->fMaskFormat = SkMask::kA8_Format; break;
case 2: glyph->fMaskFormat = SkMask::kARGB32_Format; break;
case 3: glyph->fMaskFormat = SkMask::kBW_Format; break;
}
fProxy->getMetrics(glyph);
if (fFakeIt || (glyph->getGlyphID() % 4) != 2) {
return;
}
SkPath path;
if (!fProxy->getPath(glyph->getPackedID(), &path)) {
return;
}
glyph->fMaskFormat = SkMask::kARGB32_Format;
SkRect storage;
const SkPaint& paint = this->getRandomTypeface()->paint();
const SkRect& newBounds =
paint.doComputeFastBounds(path.getBounds(), &storage, SkPaint::kFill_Style);
SkIRect ibounds;
newBounds.roundOut(&ibounds);
glyph->fLeft = ibounds.fLeft;
glyph->fTop = ibounds.fTop;
glyph->fWidth = ibounds.width();
glyph->fHeight = ibounds.height();
}
void onDrawContent(SkCanvas* canvas) override {
test_huge_stroke(canvas); return;
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
SkPaint paint;
paint.setAntiAlias(true);
if (true) {
canvas->drawColor(SK_ColorBLACK);
paint.setTextSize(24);
paint.setColor(SK_ColorWHITE);
canvas->translate(10, 30);
static const SkBlurStyle gStyle[] = {
kNormal_SkBlurStyle,
kInner_SkBlurStyle,
kOuter_SkBlurStyle,
kSolid_SkBlurStyle,
};
for (int x = 0; x < 5; x++) {
SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(4));
for (int y = 0; y < 10; y++) {
if (x) {
paint.setMaskFilter(SkBlurMaskFilter::Make(gStyle[x - 1], sigma));
}
canvas->drawString("Title Bar", x*SkIntToScalar(100), y*SkIntToScalar(30), paint);
sigma *= 0.75f;
}
}
return;
}
paint.setColor(SK_ColorBLUE);
#if 1
SkPath p;
float r = rand.nextUScalar1() + 0.5f;
SkScalar x = 0, y = 0;
p.moveTo(x, y);
#if 0
p.cubicTo(x-75*r, y+75*r, x-40*r, y+125*r, x, y+85*r);
p.cubicTo(x+40*r, y+125*r, x+75*r, y+75*r, x, y);
#else
p.cubicTo(x+75*r, y+75*r, x+40*r, y+125*r, x, y+85*r);
p.cubicTo(x-40*r, y+125*r, x-75*r, y+75*r, x, y);
#endif
p.close();
fPath = p;
fPath.offset(100, 0);
#endif
fPath.setFillType(SkPath::kWinding_FillType);
drawSet(canvas, &paint);
canvas->translate(0, fPath.getBounds().height() * 5 / 4);
fPath.setFillType(SkPath::kEvenOdd_FillType);
drawSet(canvas, &paint);
}
static sk_sp<SkPicture> make_tri_picture() {
SkPath tri = make_tri_path(SkScalarHalf(kTriSide), 0);
SkPaint fill;
fill.setStyle(SkPaint::kFill_Style);
fill.setColor(sk_tool_utils::color_to_565(SK_ColorLTGRAY));
SkPaint stroke;
stroke.setStyle(SkPaint::kStroke_Style);
stroke.setStrokeWidth(3);
SkPictureRecorder recorder;
SkRTreeFactory bbhFactory;
SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
SkIntToScalar(kPicHeight),
&bbhFactory);
SkRect r = tri.getBounds();
r.outset(2.0f, 2.0f); // outset for stroke
canvas->clipRect(r);
// The saveLayer/restore block is to exercise layer hoisting
canvas->saveLayer(nullptr, nullptr);
canvas->drawPath(tri, fill);
canvas->drawPath(tri, stroke);
canvas->restore();
return recorder.finishRecordingAsPicture();
}
bool SkHitTestPath(const SkPath& path, SkRect& target, bool hires) {
if (target.isEmpty()) {
return false;
}
bool isInverse = path.isInverseFillType();
if (path.isEmpty()) {
return isInverse;
}
SkRect bounds = path.getBounds();
bool sects = SkRect::Intersects(target, bounds);
if (isInverse) {
if (!sects) {
return true;
}
} else {
if (!sects) {
return false;
}
if (target.contains(bounds)) {
return true;
}
}
SkPath devPath;
const SkPath* pathPtr;
SkRect devTarget;
if (hires) {
const SkScalar coordLimit = SkIntToScalar(16384);
const SkRect limit = { 0, 0, coordLimit, coordLimit };
SkMatrix matrix;
matrix.setRectToRect(bounds, limit, SkMatrix::kFill_ScaleToFit);
path.transform(matrix, &devPath);
matrix.mapRect(&devTarget, target);
pathPtr = &devPath;
} else {
devTarget = target;
pathPtr = &path;
}
SkIRect iTarget;
devTarget.round(&iTarget);
if (iTarget.isEmpty()) {
iTarget.fLeft = SkScalarFloorToInt(devTarget.fLeft);
iTarget.fTop = SkScalarFloorToInt(devTarget.fTop);
iTarget.fRight = iTarget.fLeft + 1;
iTarget.fBottom = iTarget.fTop + 1;
}
SkRegion clip(iTarget);
SkRegion rgn;
return rgn.setPath(*pathPtr, clip) ^ isInverse;
}
// ensure that we don't accidentally screw up the bounds when the oval is
// fractional, and the impl computes the center and radii, and uses them to
// reconstruct the edges of the circle.
// see bug# 1504910
static void test_circlebounds(SkCanvas*) {
#ifdef SK_SCALAR_IS_FLOAT
SkRect r = { 1.39999998f, 1, 21.3999996f, 21 };
SkPath p;
p.addOval(r);
SkASSERT(r == p.getBounds());
#endif
}
SkRect draw(SkCanvas* canvas, const SkPaint& paint) override {
SkPath path;
path.addCircle(15, 15, 10);
path.addOval(SkRect::MakeXYWH(2, 2, 22, 37));
path.setFillType(SkPath::kEvenOdd_FillType);
canvas->drawPath(path, paint);
return path.getBounds();
}
// Computes the bounding box for the stroke and style currently selected into
// the given bounding box. This also takes into account the stroke width.
static FloatRect boundingBoxForCurrentStroke(const GraphicsContext* context)
{
SkPaint paint;
context->platformContext()->setupPaintForStroking(&paint, 0, 0);
SkPath boundingPath;
paint.getFillPath(context->platformContext()->currentPathInLocalCoordinates(), &boundingPath);
return boundingPath.getBounds();
}
FloatRect Path::strokeBoundingRect(const StrokeData& strokeData) const
{
SkPaint paint;
strokeData.setupPaint(&paint);
SkPath boundingPath;
paint.getFillPath(m_path, &boundingPath);
return boundingPath.getBounds();
}
void SkDeferredCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) {
if (path.isInverseFillType()) {
this->flush_before_saves();
} else {
SkRect modRect = path.getBounds();
this->flush_check(&modRect, &paint, kNoClip_Flag | kNoTranslate_Flag | kNoScale_Flag);
}
fCanvas->drawPath(path, paint);
}
/* return non-zero if the path is too big, and should be shrunk to avoid
overflows during intermediate calculations. Note that we compute the
bounds for this. If we had a custom callback/walker for paths, we could
perhaps go faster by using that, and just perform the abs | in that
routine
*/
static int needs_to_shrink(const SkPath& path) {
const SkRect& r = path.getBounds();
SkFixed mask = SkAbs32(r.fLeft);
mask |= SkAbs32(r.fTop);
mask |= SkAbs32(r.fRight);
mask |= SkAbs32(r.fBottom);
// we need the top 3 bits clear (after abs) to avoid overflow
return mask >> 29;
}
