void FatBits::drawLineSkeleton(SkCanvas* max, const SkPoint pts[]) {
SkPaint paint;
this->setupSkeletonPaint(&paint);
SkPath path;
path.moveTo(pts[0]);
path.lineTo(pts[1]);
switch (fStyle) {
case kHair_Style:
if (fUseGPU) {
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SK_Scalar1 * fZoom);
SkPath dst;
p.getFillPath(path, &dst);
path.addPath(dst);
}
break;
case kStroke_Style: {
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SK_Scalar1 * fZoom);
SkPath dst;
p.getFillPath(path, &dst);
path = dst;
if (fUseGPU) {
path.moveTo(dst.getPoint(0));
path.lineTo(dst.getPoint(2));
}
} break;
}
max->drawPath(path, 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);
}
// Draws the given text string using skia. Note that gradient or
// pattern may be NULL, in which case a solid colour is used.
static bool skiaDrawText(HFONT hfont,
HDC dc,
SkCanvas* canvas,
const SkPoint& point,
SkPaint* paint,
const WORD* glyphs,
const int* advances,
const GOFFSET* offsets,
int numGlyphs)
{
float x = point.fX, y = point.fY;
for (int i = 0; i < numGlyphs; i++) {
const SkPath* path = SkiaWinOutlineCache::lookupOrCreatePathForGlyph(dc, hfont, glyphs[i]);
if (!path)
return false;
float offsetX = 0.0f, offsetY = 0.0f;
if (offsets && (offsets[i].du != 0 || offsets[i].dv != 0)) {
offsetX = offsets[i].du;
offsetY = offsets[i].dv;
}
SkPath newPath;
newPath.addPath(*path, x + offsetX, y + offsetY);
canvas->drawPath(newPath, *paint);
x += advances[i];
}
return true;
}
static bool innerPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName, bool threaded) {
#if DEBUG_SHOW_TEST_NAME
if (testName == NULL) {
SkDebugf("\n");
showPathData(a);
showOp(shapeOp);
showPathData(b);
} else {
SkPathOpsDebug::ShowPath(a, b, shapeOp, testName);
}
#endif
SkPath out;
if (!Op(a, b, shapeOp, &out) ) {
SkDebugf("%s did not expect failure\n", __FUNCTION__);
REPORTER_ASSERT(reporter, 0);
return false;
}
if (threaded && !reporter->verbose()) {
return true;
}
SkPath pathOut, scaledPathOut;
SkRegion rgnA, rgnB, openClip, rgnOut;
openClip.setRect(-16000, -16000, 16000, 16000);
rgnA.setPath(a, openClip);
rgnB.setPath(b, openClip);
rgnOut.op(rgnA, rgnB, (SkRegion::Op) shapeOp);
rgnOut.getBoundaryPath(&pathOut);
SkMatrix scale;
scaleMatrix(a, b, scale);
SkRegion scaledRgnA, scaledRgnB, scaledRgnOut;
SkPath scaledA, scaledB;
scaledA.addPath(a, scale);
scaledA.setFillType(a.getFillType());
scaledB.addPath(b, scale);
scaledB.setFillType(b.getFillType());
scaledRgnA.setPath(scaledA, openClip);
scaledRgnB.setPath(scaledB, openClip);
scaledRgnOut.op(scaledRgnA, scaledRgnB, (SkRegion::Op) shapeOp);
scaledRgnOut.getBoundaryPath(&scaledPathOut);
SkBitmap bitmap;
SkPath scaledOut;
scaledOut.addPath(out, scale);
scaledOut.setFillType(out.getFillType());
int result = comparePaths(reporter, pathOut, scaledPathOut, out, scaledOut, bitmap, a, b,
shapeOp, scale);
if (result && gPathStrAssert) {
REPORTER_ASSERT(reporter, 0);
}
reporter->bumpTestCount();
return result == 0;
}
static bool innerPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName, ExpectSuccess expectSuccess,
SkipAssert skipAssert, ExpectMatch expectMatch) {
#if 0 && DEBUG_SHOW_TEST_NAME
showName(a, b, shapeOp);
#endif
SkPath out;
if (!OpDebug(a, b, shapeOp, &out SkDEBUGPARAMS(SkipAssert::kYes == skipAssert)
SkDEBUGPARAMS(testName))) {
if (ExpectSuccess::kYes == expectSuccess) {
SkDebugf("%s %s did not expect failure\n", __FUNCTION__, testName);
REPORTER_ASSERT(reporter, 0);
}
return false;
} else {
if (ExpectSuccess::kNo == expectSuccess) {
SkDebugf("%s %s unexpected success\n", __FUNCTION__, testName);
REPORTER_ASSERT(reporter, 0);
}
}
if (!reporter->verbose()) {
return true;
}
SkPath pathOut, scaledPathOut;
SkRegion rgnA, rgnB, openClip, rgnOut;
openClip.setRect(-16000, -16000, 16000, 16000);
rgnA.setPath(a, openClip);
rgnB.setPath(b, openClip);
rgnOut.op(rgnA, rgnB, (SkRegion::Op) shapeOp);
rgnOut.getBoundaryPath(&pathOut);
SkMatrix scale;
scaleMatrix(a, b, scale);
SkRegion scaledRgnA, scaledRgnB, scaledRgnOut;
SkPath scaledA, scaledB;
scaledA.addPath(a, scale);
scaledA.setFillType(a.getFillType());
scaledB.addPath(b, scale);
scaledB.setFillType(b.getFillType());
scaledRgnA.setPath(scaledA, openClip);
scaledRgnB.setPath(scaledB, openClip);
scaledRgnOut.op(scaledRgnA, scaledRgnB, (SkRegion::Op) shapeOp);
scaledRgnOut.getBoundaryPath(&scaledPathOut);
SkBitmap bitmap;
SkPath scaledOut;
scaledOut.addPath(out, scale);
scaledOut.setFillType(out.getFillType());
int result = comparePaths(reporter, testName, pathOut, scaledPathOut, out, scaledOut, bitmap,
a, b, shapeOp, scale, ExpectMatch::kYes == expectMatch);
reporter->bumpTestCount();
return result == 0;
}
static void
_update_path(mbe_t *mbe) {
SkPath *path = mbe->path;
SkPath *subpath = mbe->subpath;
SkMatrix canvas_matrix;
SkPoint point;
MB_MATRIX_2_SKMATRIX(canvas_matrix, mbe->states->matrix);
path->addPath(*subpath, canvas_matrix);
subpath->getLastPt(&point);
subpath->rewind();
subpath->moveTo(point);
}
void Path::addArc(const FloatPoint& p, float r, float sa, float ea,
bool clockwise) {
SkScalar cx = SkFloatToScalar(p.x());
SkScalar cy = SkFloatToScalar(p.y());
SkScalar radius = SkFloatToScalar(r);
SkRect oval;
oval.set(cx - radius, cy - radius, cx + radius, cy + radius);
float sweep = ea - sa;
bool prependOval = false;
/* Note if clockwise and the sign of the sweep disagree. This particular
logic was deduced from http://canvex.lazyilluminati.com/misc/arc.html
*/
if (clockwise && (sweep > 0 || sweep < -g2PI)) {
sweep = fmodf(sweep, g2PI) - g2PI;
} else if (!clockwise && (sweep < 0 || sweep > g2PI)) {
sweep = fmodf(sweep, g2PI) + g2PI;
}
// If the abs(sweep) >= 2PI, then we need to add a circle before we call
// arcTo, since it treats the sweep mod 2PI. We don't have a prepend call,
// so we just remember this, and at the end create a new path with an oval
// and our current path, and then swap then.
//
if (sweep >= g2PI || sweep <= -g2PI) {
prependOval = true;
// SkDebugf("addArc sa=%g ea=%g cw=%d sweep %g treat as circle\n", sa, ea, clockwise, sweep);
// now reduce sweep to just the amount we need, so that the current
// point is left where the caller expects it.
sweep = fmodf(sweep, g2PI);
}
sa = fast_mod(sa, g2PI);
SkScalar startDegrees = SkFloatToScalar(sa * g180OverPI);
SkScalar sweepDegrees = SkFloatToScalar(sweep * g180OverPI);
// SkDebugf("addArc sa=%g ea=%g cw=%d sweep=%g ssweep=%g\n", sa, ea, clockwise, sweep, SkScalarToFloat(sweepDegrees));
m_path->arcTo(oval, startDegrees, sweepDegrees, false);
if (prependOval) {
SkPath tmp;
tmp.addOval(oval);
tmp.addPath(*m_path);
m_path->swap(tmp);
}
}
void mbe_arc(mbe_t *mbe, co_aix x, co_aix y, co_aix radius,
co_aix angle_start, co_aix angle_stop) {
SkPoint point;
SkPath *subpath = mbe->subpath;
SkRect rect;
SkScalar x0, y0;
SkScalar ang_start, ang_stop;
SkScalar sweep;
SkScalar r; /* radius */
subpath->getLastPt(&point);
x0 = point.fX;
y0 = point.fX;
r = CO_AIX_2_SKSCALAR(radius);
ang_start = CO_AIX_2_SKSCALAR(angle_start * 180 / PI);
ang_stop = CO_AIX_2_SKSCALAR(angle_stop * 180 / PI);
/* Skia can only draw an arc in clockwise directly. We negative
* start and stop point to draw the arc in the mirror along x-axis
* in a sub-path. Then, the sub-path are reflected along x-axis,
* again. We get a right path, and add it to the path of mbe_t.
*/
if(ang_start > ang_stop) {
SkPath tmppath;
SkMatrix matrix;
co_aix reflect[6] = { 1, 0, 0,
0, -1, 0};
rect.set(-r, -r, r, r);
sweep = ang_start - ang_stop;
tmppath.arcTo(rect, -ang_start, sweep, false);
reflect[2] = x;
reflect[5] = y;
MB_MATRIX_2_SKMATRIX(matrix, reflect);
subpath->addPath(tmppath, matrix);
} else {
rect.set(x0 - r, y0 - r, x0 + r, y0 + r);
sweep = ang_stop - ang_start;
subpath->arcTo(rect, ang_start, sweep, false);
}
}
void TextArt::EnvelopeWarp::morph(SkPath& bSkeleton, SkPathMeasure& bMeasure, SkPathCrossing& bCrossing,
SkPath& tSkeleton, SkPathMeasure& tMeasure, SkPathCrossing& tCrossing,
SkPath& glypthPath, SkPathMeasure& lineMeasure, SkMatrix& scaleMatrix,
SkScalar xpos, SkScalar hBOffset, SkScalar hTOffset, SkPath& warpedPath)
{
SkRect glypthBound;
glypthBound = glypthPath.getBounds();
SkScalar k1 = 1.0;
if (!isSymmetric_)
{
SkScalar hBOffsetTmp = 0.0;
SkScalar hTOffsetTmp = 0.0;
if (isTopBased_)
{
glypthBound.fTop = 0;
glypthBound.fBottom = -boundsRect_.height();
SkMatrix compositeTMatrix(scaleMatrix);
compositeTMatrix.postTranslate(xpos + hTOffset, 0);
compositeTMatrix.postConcat(matrix_);
if ( getK(glypthBound, bCrossing, tCrossing, tMeasure, compositeTMatrix, k1, hBOffsetTmp, hTOffsetTmp) )
{
k1 = 1/k1;
hBOffset = hBOffsetTmp;
hTOffset = xpos + hTOffset;
}
}
else
{
glypthBound.fTop = -boundsRect_.height();
glypthBound.fBottom = 0;
SkMatrix compositeBMatrix(scaleMatrix);
compositeBMatrix.postTranslate(xpos + hBOffset, 0);
compositeBMatrix.postConcat(matrix_);
if ( getK(glypthBound, bCrossing, tCrossing, bMeasure, compositeBMatrix, k1, hBOffsetTmp, hTOffsetTmp) )
{
//use distance to Left on Top Skeleton for positioning Top glypthn
hTOffset = hTOffsetTmp;
hBOffset = xpos + hBOffset;
}
}
}
else
{
hBOffset = xpos + hBOffset;
hTOffset = hBOffset;
}
SkMatrix compositeBMatrix(scaleMatrix);
compositeBMatrix.postTranslate(hBOffset, 0);
compositeBMatrix.postConcat(matrix_);
//warp Glypth by bottom line
k1_ = isTopBased_ ? k1 : SkIntToScalar(1);
isTop = false;
SkPath bWarped;
morphpath(&bWarped, glypthPath, bMeasure, compositeBMatrix);
bWarped_.addPath(bWarped);
if (!tSkeleton_.isEmpty())
{
SkMatrix compositeTMatrix(scaleMatrix);
compositeTMatrix.postTranslate(hTOffset, 0);
compositeTMatrix.postConcat(matrix_);
//warp Glypth by top line
k1_ = !isTopBased_ ? k1 : SkIntToScalar(1);
isTop = true;
SkPath tWarped;
morphpath(&tWarped, glypthPath, tMeasure, compositeTMatrix);
tWarped_.addPath(tWarped);
//convert Glypth to Path to allow weighting
SkPath lineMorphed;
morphpath(&lineMorphed, glypthPath, lineMeasure, scaleMatrix);
weight(lineMorphed, tWarped, bWarped, &warpedPath);
}
else
warpedPath.addPath(bWarped_);
}
SkPath makePath() {
SkPath path;
for (uint32_t cIndex = 0; cIndex < fPathContourCount; ++cIndex) {
uint32_t segments = makeSegmentCount();
for (uint32_t sIndex = 0; sIndex < segments; ++sIndex) {
RandomAddPath addPathType = makeAddPathType();
++fAddCount;
if (fPrintName) {
SkDebugf("%.*s%s\n", fPathDepth * 3, fTab,
gRandomAddPathNames[addPathType]);
}
switch (addPathType) {
case kAddArc: {
SkRect oval = makeRect();
SkScalar startAngle = makeAngle();
SkScalar sweepAngle = makeAngle();
path.addArc(oval, startAngle, sweepAngle);
validate(path);
} break;
case kAddRoundRect1: {
SkRect rect = makeRect();
SkScalar rx = makeScalar(), ry = makeScalar();
SkPath::Direction dir = makeDirection();
path.addRoundRect(rect, rx, ry, dir);
validate(path);
} break;
case kAddRoundRect2: {
SkRect rect = makeRect();
SkScalar radii[8];
makeScalarArray(SK_ARRAY_COUNT(radii), radii);
SkPath::Direction dir = makeDirection();
path.addRoundRect(rect, radii, dir);
validate(path);
} break;
case kAddRRect: {
SkRRect rrect = makeRRect();
SkPath::Direction dir = makeDirection();
path.addRRect(rrect, dir);
validate(path);
} break;
case kAddPoly: {
SkTDArray<SkPoint> points;
makePointArray(&points);
bool close = makeBool();
path.addPoly(&points[0], points.count(), close);
validate(path);
} break;
case kAddPath1:
if (fPathDepth < fPathDepthLimit) {
++fPathDepth;
SkPath src = makePath();
validate(src);
SkScalar dx = makeScalar();
SkScalar dy = makeScalar();
SkPath::AddPathMode mode = makeAddPathMode();
path.addPath(src, dx, dy, mode);
--fPathDepth;
validate(path);
}
break;
case kAddPath2:
if (fPathDepth < fPathDepthLimit) {
++fPathDepth;
SkPath src = makePath();
validate(src);
SkPath::AddPathMode mode = makeAddPathMode();
path.addPath(src, mode);
--fPathDepth;
validate(path);
}
break;
case kAddPath3:
if (fPathDepth < fPathDepthLimit) {
++fPathDepth;
SkPath src = makePath();
validate(src);
SkMatrix matrix = makeMatrix();
SkPath::AddPathMode mode = makeAddPathMode();
path.addPath(src, matrix, mode);
--fPathDepth;
validate(path);
}
break;
case kReverseAddPath:
if (fPathDepth < fPathDepthLimit) {
++fPathDepth;
SkPath src = makePath();
validate(src);
path.reverseAddPath(src);
--fPathDepth;
validate(path);
}
break;
case kMoveToPath: {
SkScalar x = makeScalar();
SkScalar y = makeScalar();
path.moveTo(x, y);
validate(path);
} break;
case kRMoveToPath: {
SkScalar x = makeScalar();
SkScalar y = makeScalar();
path.rMoveTo(x, y);
validate(path);
} break;
case kLineToPath: {
SkScalar x = makeScalar();
SkScalar y = makeScalar();
path.lineTo(x, y);
validate(path);
} break;
case kRLineToPath: {
SkScalar x = makeScalar();
SkScalar y = makeScalar();
path.rLineTo(x, y);
validate(path);
} break;
case kQuadToPath: {
SkPoint pt[2];
makePointArray(SK_ARRAY_COUNT(pt), pt);
path.quadTo(pt[0], pt[1]);
validate(path);
} break;
case kRQuadToPath: {
SkPoint pt[2];
makePointArray(SK_ARRAY_COUNT(pt), pt);
path.rQuadTo(pt[0].fX, pt[0].fY, pt[1].fX, pt[1].fY);
validate(path);
} break;
case kConicToPath: {
SkPoint pt[2];
makePointArray(SK_ARRAY_COUNT(pt), pt);
SkScalar weight = makeScalar();
path.conicTo(pt[0], pt[1], weight);
validate(path);
} break;
case kRConicToPath: {
SkPoint pt[2];
makePointArray(SK_ARRAY_COUNT(pt), pt);
SkScalar weight = makeScalar();
path.rConicTo(pt[0].fX, pt[0].fY, pt[1].fX, pt[1].fY, weight);
validate(path);
} break;
case kCubicToPath: {
SkPoint pt[3];
makePointArray(SK_ARRAY_COUNT(pt), pt);
path.cubicTo(pt[0], pt[1], pt[2]);
validate(path);
} break;
case kRCubicToPath: {
SkPoint pt[3];
makePointArray(SK_ARRAY_COUNT(pt), pt);
path.rCubicTo(pt[0].fX, pt[0].fY, pt[1].fX, pt[1].fY, pt[2].fX, pt[2].fY);
validate(path);
} break;
case kArcToPath: {
SkPoint pt[2];
makePointArray(SK_ARRAY_COUNT(pt), pt);
SkScalar radius = makeScalar();
path.arcTo(pt[0], pt[1], radius);
validate(path);
} break;
case kArcTo2Path: {
SkRect oval = makeRect();
SkScalar startAngle = makeAngle();
SkScalar sweepAngle = makeAngle();
bool forceMoveTo = makeBool();
path.arcTo(oval, startAngle, sweepAngle, forceMoveTo);
validate(path);
} break;
case kClosePath:
path.close();
validate(path);
break;
}
}
}
return path;
}
/* OPTIMIZATION: Union doesn't need to be all-or-nothing. A run of three or more convex
paths with union ops could be locally resolved and still improve over doing the
ops one at a time. */
bool SkOpBuilder::resolve(SkPath* result) {
SkPath original = *result;
int count = fOps.count();
bool allUnion = true;
SkPathPriv::FirstDirection firstDir = SkPathPriv::kUnknown_FirstDirection;
for (int index = 0; index < count; ++index) {
SkPath* test = &fPathRefs[index];
if (kUnion_SkPathOp != fOps[index] || test->isInverseFillType()) {
allUnion = false;
break;
}
// If all paths are convex, track direction, reversing as needed.
if (test->isConvex()) {
SkPathPriv::FirstDirection dir;
if (!SkPathPriv::CheapComputeFirstDirection(*test, &dir)) {
allUnion = false;
break;
}
if (firstDir == SkPathPriv::kUnknown_FirstDirection) {
firstDir = dir;
} else if (firstDir != dir) {
SkPath temp;
temp.reverseAddPath(*test);
*test = temp;
}
continue;
}
// If the path is not convex but its bounds do not intersect the others, simplify is enough.
const SkRect& testBounds = test->getBounds();
for (int inner = 0; inner < index; ++inner) {
// OPTIMIZE: check to see if the contour bounds do not intersect other contour bounds?
if (SkRect::Intersects(fPathRefs[inner].getBounds(), testBounds)) {
allUnion = false;
break;
}
}
}
if (!allUnion) {
*result = fPathRefs[0];
for (int index = 1; index < count; ++index) {
if (!Op(*result, fPathRefs[index], fOps[index], result)) {
reset();
*result = original;
return false;
}
}
reset();
return true;
}
SkPath sum;
for (int index = 0; index < count; ++index) {
if (!Simplify(fPathRefs[index], &fPathRefs[index])) {
reset();
*result = original;
return false;
}
if (!fPathRefs[index].isEmpty()) {
// convert the even odd result back to winding form before accumulating it
if (!FixWinding(&fPathRefs[index])) {
*result = original;
return false;
}
sum.addPath(fPathRefs[index]);
}
}
reset();
bool success = Simplify(sum, result);
if (!success) {
*result = original;
}
return success;
}