static void blur_path(SkCanvas* canvas, const SkPath& path,
SkScalar gaussianSigma) {
SkScalar midX = path.getBounds().centerX();
SkScalar midY = path.getBounds().centerY();
canvas->translate(-midX, -midY);
SkPaint blurPaint;
blurPaint.setColor(SK_ColorWHITE);
SkMaskFilter* filter = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
gaussianSigma,
SkBlurMaskFilter::kHighQuality_BlurFlag);
blurPaint.setMaskFilter(filter)->unref();
canvas->drawColor(SK_ColorBLACK);
canvas->drawPath(path, blurPaint);
}
// Create a 1-tier drawlooper
sk_sp<SkDrawLooper> create1Looper(SkScalar xOff, SkScalar yOff, SkColor color) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits = SkLayerDrawLooper::kColorFilter_Bit |
SkLayerDrawLooper::kMaskFilter_Bit;
info.fColorMode = SkXfermode::kSrc_Mode;
info.fOffset.set(xOff, yOff);
info.fPostTranslate = false;
SkPaint* paint = looperBuilder.addLayer(info);
paint->setMaskFilter(this->createBlur())->unref();
paint->setColorFilter(SkColorFilter::MakeModeFilter(color, SkXfermode::kSrcIn_Mode));
return looperBuilder.detach();
}
void DrawLooperBuilder::addShadow(const FloatSize& offset,
float blur,
const Color& color,
ShadowTransformMode shadowTransformMode,
ShadowAlphaMode shadowAlphaMode) {
// Detect when there's no effective shadow.
if (!color.alpha())
return;
SkColor skColor = color.rgb();
SkLayerDrawLooper::LayerInfo info;
switch (shadowAlphaMode) {
case ShadowRespectsAlpha:
info.fColorMode = SkBlendMode::kDst;
break;
case ShadowIgnoresAlpha:
info.fColorMode = SkBlendMode::kSrc;
break;
default:
ASSERT_NOT_REACHED();
}
if (blur)
info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur
info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit;
info.fOffset.set(offset.width(), offset.height());
info.fPostTranslate = (shadowTransformMode == ShadowIgnoresTransforms);
SkPaint* paint = m_skDrawLooperBuilder.addLayerOnTop(info);
if (blur) {
const SkScalar sigma = RadiusToSigma(blur / 2);
uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag;
if (shadowTransformMode == ShadowIgnoresTransforms)
mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag;
paint->setMaskFilter(
SkBlurMaskFilter::Make(kNormal_SkBlurStyle, sigma, mfFlags));
}
paint->setColorFilter(
SkColorFilter::MakeModeFilter(skColor, SkBlendMode::kSrcIn));
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < loops; i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
paint.setMaskFilter(SkMaskFilter::MakeBlur(fStyle,
SkBlurMask::ConvertRadiusToSigma(fRadius)));
}
canvas->drawOval(r, paint);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < SkBENCHLOOP(10); i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(fRadius, fStyle, 0);
paint.setMaskFilter(mf)->unref();
}
canvas->drawOval(r, paint);
}
}
void DrawLooper::addShadow(const FloatSize& offset, float blur, const Color& color,
ShadowTransformMode shadowTransformMode, ShadowAlphaMode shadowAlphaMode)
{
// Detect when there's no effective shadow.
if (!color.alpha())
return;
SkColor skColor = color.rgb();
SkLayerDrawLooper::LayerInfo info;
switch (shadowAlphaMode) {
case ShadowRespectsAlpha:
info.fColorMode = SkXfermode::kDst_Mode;
break;
case ShadowIgnoresAlpha:
info.fColorMode = SkXfermode::kSrc_Mode;
break;
default:
ASSERT_NOT_REACHED();
}
if (blur)
info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur
info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit;
info.fOffset.set(offset.width(), offset.height());
info.fPostTranslate = (shadowTransformMode == ShadowIgnoresTransforms);
SkPaint* paint = m_skDrawLooper->addLayerOnTop(info);
if (blur) {
uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag;
if (shadowTransformMode == ShadowIgnoresTransforms)
mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag;
RefPtr<SkMaskFilter> mf = adoptRef(SkBlurMaskFilter::Create(
(double)blur / 2.0, SkBlurMaskFilter::kNormal_BlurStyle, mfFlags));
paint->setMaskFilter(mf.get());
}
RefPtr<SkColorFilter> cf = adoptRef(SkColorFilter::CreateModeFilter(skColor, SkXfermode::kSrcIn_Mode));
paint->setColorFilter(cf.get());
}
void onDraw(SkCanvas* canvas) override {
static const SkScalar kBlurRadius = SkIntToScalar(20);
static const SkScalar kBoxSize = SkIntToScalar(100);
SkRect clipRect = SkRect::MakeXYWH(0, 0, kBoxSize, kBoxSize);
SkRect blurRects[] = {
{ -kBoxSize - (kBlurRadius+1), 0, -(kBlurRadius+1), kBoxSize },
{ 0, -kBoxSize - (kBlurRadius+1), kBoxSize, -(kBlurRadius+1) },
{ kBoxSize+kBlurRadius+1, 0, 2*kBoxSize+kBlurRadius+1, kBoxSize },
{ 0, kBoxSize+kBlurRadius+1, kBoxSize, 2*kBoxSize+kBlurRadius+1 }
};
SkColor colors[] = {
SK_ColorRED,
SK_ColorGREEN,
SK_ColorBLUE,
SK_ColorYELLOW,
};
SkASSERT(SK_ARRAY_COUNT(colors) == SK_ARRAY_COUNT(blurRects));
SkPaint hairlinePaint;
hairlinePaint.setStyle(SkPaint::kStroke_Style);
hairlinePaint.setColor(SK_ColorWHITE);
hairlinePaint.setStrokeWidth(0);
SkPaint blurPaint;
blurPaint.setFilterQuality(kLow_SkFilterQuality);
SkMaskFilter* mf = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(kBlurRadius));
blurPaint.setMaskFilter(mf)->unref();
canvas->clear(SK_ColorBLACK);
canvas->save();
canvas->translate(kBoxSize, kBoxSize);
canvas->drawRect(clipRect, hairlinePaint);
canvas->clipRect(clipRect);
for (size_t i = 0; i < SK_ARRAY_COUNT(blurRects); ++i) {
blurPaint.setColor(colors[i]);
canvas->drawRect(blurRects[i], blurPaint);
canvas->drawRect(blurRects[i], hairlinePaint);
}
canvas->restore();
}
virtual void onDraw(SkCanvas* canvas)
{
this->drawBG(canvas);
canvas->translate(this->width()/2, this->height()/2);
Sk3DView view;
view.rotateX(SkIntToScalar(fRX));
view.rotateY(SkIntToScalar(fRY));
view.applyToCanvas(canvas);
SkPaint paint;
SkScalar rad = SkIntToScalar(50);
SkScalar dim = rad*2;
if (view.dotWithNormal(0, 0, SK_Scalar1) < 0) {
paint.setColor(SK_ColorRED);
}
paint.setAntiAlias(true);
#if 0
SkEmbossMaskFilter::Light light;
light.fDirection[0] = SK_Scalar1;
light.fDirection[1] = SK_Scalar1;
light.fDirection[2] = SK_Scalar1;
light.fAmbient = 180;
light.fSpecular = 16 * 2;
paint.setMaskFilter(new SkEmbossMaskFilter(light, SkIntToScalar(4)));
#endif
canvas->drawCircle(0, 0, rad, paint);
canvas->drawCircle(-dim, -dim, rad, paint);
canvas->drawCircle(-dim, dim, rad, paint);
canvas->drawCircle( dim, -dim, rad, paint);
canvas->drawCircle( dim, dim, rad, paint);
fRY += 1;
if (fRY >= 360)
fRY = 0;
this->inval(NULL);
}
static void draw_rrect(SkCanvas* canvas, const SkRRect& rr, const SkRRect& occRR) {
const SkScalar kBlurSigma = 5.0f;
SkRect occRect;
SkColor strokeColor;
{
SkRect occRect1 = sk_tool_utils::compute_central_occluder(occRR);
SkRect occRect2 = sk_tool_utils::compute_widest_occluder(occRR);
SkRect occRect3 = sk_tool_utils::compute_tallest_occluder(occRR);
SkScalar area1 = occRect1.width() * occRect1.height();
SkScalar area2 = occRect2.width() * occRect2.height();
SkScalar area3 = occRect3.width() * occRect3.height();
if (area1 >= area2 && area1 >= area3) {
strokeColor = SK_ColorRED;
occRect = occRect1;
} else if (area2 > area3) {
strokeColor = SK_ColorYELLOW;
occRect = occRect2;
} else {
strokeColor = SK_ColorCYAN;
occRect = occRect3;
}
}
// draw the blur
SkPaint paint;
paint.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle, kBlurSigma, occRect));
canvas->drawRRect(rr, paint);
// draw the stroked geometry of the full occluder
SkPaint stroke;
stroke.setStyle(SkPaint::kStroke_Style);
stroke.setColor(SK_ColorBLUE);
canvas->drawRRect(occRR, stroke);
// draw the geometry of the occluding rect
stroke.setColor(strokeColor);
canvas->drawRect(occRect, stroke);
}
void onDrawContent(SkCanvas* canvas) override {
static const SkBlurStyle gStyles[] = {
kNormal_SkBlurStyle,
kInner_SkBlurStyle,
kSolid_SkBlurStyle,
kOuter_SkBlurStyle,
};
SkRandom random;
for (size_t i = 0; i < SK_ARRAY_COUNT(gStyles); ++i) {
SkPaint paint;
paint.setMaskFilter(SkBlurMaskFilter::Make(gStyles[i],
fBlurSigma,
SkBlurMaskFilter::kHighQuality_BlurFlag));
paint.setColor(random.nextU() | 0xff000000);
canvas->drawCircle(200 * SK_Scalar1 + 400 * (i % 2) * SK_Scalar1,
200 * SK_Scalar1 + i / 2 * 400 * SK_Scalar1,
fCircleRadius, paint);
}
}
virtual void onDraw(const int loops, SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < loops; i++) {
SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
rand.nextUScalar1() * 400);
r.offset(fRadius, fRadius);
if (fRadius > 0) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(fStyle,
SkBlurMask::ConvertRadiusToSigma(fRadius),
fFlags);
paint.setMaskFilter(mf)->unref();
}
canvas->drawOval(r, paint);
}
}
static SkPaint make_paint() {
SkPaint paint;
paint.setHinting(make_paint_hinting());
paint.setAntiAlias(make_bool());
paint.setDither(make_bool());
paint.setLinearText(make_bool());
paint.setSubpixelText(make_bool());
paint.setLCDRenderText(make_bool());
paint.setEmbeddedBitmapText(make_bool());
paint.setAutohinted(make_bool());
paint.setVerticalText(make_bool());
paint.setFakeBoldText(make_bool());
paint.setDevKernText(make_bool());
paint.setFilterQuality(make_filter_quality());
paint.setStyle(make_paint_style());
paint.setColor(make_color());
paint.setStrokeWidth(make_scalar());
paint.setStrokeMiter(make_scalar());
paint.setStrokeCap(make_paint_cap());
paint.setStrokeJoin(make_paint_join());
paint.setColorFilter(make_color_filter());
paint.setBlendMode(make_xfermode());
paint.setPathEffect(make_path_effect());
paint.setMaskFilter(make_mask_filter());
if (false) {
// our validating buffer does not support typefaces yet, so skip this for now
paint.setTypeface(SkTypeface::MakeFromName(make_font_name().c_str(),
make_typeface_style()));
}
paint.setImageFilter(make_image_filter());
sk_sp<SkData> data(make_3Dlut(nullptr, make_bool(), make_bool(), make_bool()));
paint.setTextAlign(make_paint_align());
paint.setTextSize(make_scalar());
paint.setTextScaleX(make_scalar());
paint.setTextSkewX(make_scalar());
paint.setTextEncoding(make_paint_text_encoding());
return paint;
}
// Create a 4-tier draw looper
sk_sp<SkDrawLooper> create4Looper(SkScalar xOff, SkScalar yOff) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits = SkLayerDrawLooper::kColorFilter_Bit |
SkLayerDrawLooper::kMaskFilter_Bit;
info.fColorMode = (SK_XFERMODE_MODE_PARAM)SkBlendMode::kSrc;
info.fPostTranslate = false;
SkPaint* paint;
for (int i = 3; i >= 0; --i) {
info.fOffset.set(xOff+gBlurOffsets[i].fX, yOff+gBlurOffsets[i].fY);
paint = looperBuilder.addLayer(info);
paint->setMaskFilter(MakeBlur());
paint->setColorFilter(SkColorFilter::MakeModeFilter(gColors[i], SkBlendMode::kSrcIn));
}
return looperBuilder.detach();
}
// Create a 4-tier draw looper
sk_sp<SkDrawLooper> create4Looper(SkScalar xOff, SkScalar yOff) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits = SkLayerDrawLooper::kColorFilter_Bit |
SkLayerDrawLooper::kMaskFilter_Bit;
info.fColorMode = SkXfermode::kSrc_Mode;
info.fPostTranslate = false;
SkPaint* paint;
for (int i = 3; i >= 0; --i) {
info.fOffset.set(xOff+gBlurOffsets[i].fX, yOff+gBlurOffsets[i].fY);
paint = looperBuilder.addLayer(info);
paint->setMaskFilter(this->createBlur())->unref();
SkColorFilter* cf = SkColorFilter::CreateModeFilter(gColors[i], SkXfermode::kSrcIn_Mode);
paint->setColorFilter(cf)->unref();
}
return looperBuilder.detach();
}
void onDraw(SkCanvas* canvas) override {
canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
SkRect r = { 0, 0, 100, 50 };
SkScalar scales[] = { SK_Scalar1, 0.6f };
for (size_t s = 0; s < SK_ARRAY_COUNT(scales); ++s) {
canvas->save();
for (size_t f = 0; f < SK_ARRAY_COUNT(fMaskFilters); ++f) {
SkPaint paint;
paint.setMaskFilter(fMaskFilters[f]);
paint.setAlpha(fAlpha);
SkPaint paintWithRadial = paint;
paintWithRadial.setShader(make_radial());
constexpr Proc procs[] = {
fill_rect, draw_donut, draw_donut_skewed
};
canvas->save();
canvas->scale(scales[s], scales[s]);
this->drawProcs(canvas, r, paint, false, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paintWithRadial, false, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paint, true, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paintWithRadial, true, procs, SK_ARRAY_COUNT(procs));
canvas->restore();
canvas->translate(0, SK_ARRAY_COUNT(procs) * r.height() * 4/3 * scales[s]);
}
canvas->restore();
canvas->translate(4 * r.width() * 4/3 * scales[s], 0);
}
}
void onDrawContent(SkCanvas* canvas) override {
const char* str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
SkPaint paint;
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
paint.setFlags(0x105);
paint.setARGB(fByte, 0xFF, 0xFF, 0xFF);
paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(3))));
paint.getMaskFilter()->unref();
SkRandom rand;
for (int ps = 6; ps <= 35; ps++) {
paint.setColor(rand.nextU() | (0xFF << 24));
paint.setTextSize(SkIntToScalar(ps));
paint.setTextSize(SkIntToScalar(24));
canvas->drawText(str, strlen(str), x, y, paint);
y += paint.getFontMetrics(nullptr);
}
}
void init() {
if (fLooper) return;
static const struct {
SkColor fColor;
SkPaint::Style fStyle;
SkScalar fWidth;
SkScalar fOffset;
SkScalar fBlur;
} gParams[] = {
{ SK_ColorWHITE, SkPaint::kStroke_Style, SkIntToScalar(1)*3/4, 0, 0 },
{ SK_ColorRED, SkPaint::kStroke_Style, SkIntToScalar(4), 0, 0 },
{ SK_ColorBLUE, SkPaint::kFill_Style, 0, 0, 0 },
{ 0x88000000, SkPaint::kFill_Style, 0, SkIntToScalar(10), SkIntToScalar(3) }
};
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits = SkLayerDrawLooper::kStyle_Bit | SkLayerDrawLooper::kMaskFilter_Bit;
info.fColorMode = SkXfermode::kSrc_Mode;
for (size_t i = 0; i < SK_ARRAY_COUNT(gParams); i++) {
info.fOffset.set(gParams[i].fOffset, gParams[i].fOffset);
SkPaint* paint = looperBuilder.addLayer(info);
paint->setColor(gParams[i].fColor);
paint->setStyle(gParams[i].fStyle);
paint->setStrokeWidth(gParams[i].fWidth);
if (gParams[i].fBlur > 0) {
SkMaskFilter* mf = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(gParams[i].fBlur));
paint->setMaskFilter(mf)->unref();
}
}
fLooper = looperBuilder.detachLooper();
}
sk_sp<SkDrawLooper> SkBlurDrawLooper::Make(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy)
{
sk_sp<SkMaskFilter> blur = nullptr;
if (sigma > 0.0f) {
blur = SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, sigma, true);
}
SkLayerDrawLooper::Builder builder;
// First layer
SkLayerDrawLooper::LayerInfo defaultLayer;
builder.addLayer(defaultLayer);
// Blur layer
SkLayerDrawLooper::LayerInfo blurInfo;
blurInfo.fColorMode = SkBlendMode::kSrc;
blurInfo.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit;
blurInfo.fOffset = SkVector::Make(dx, dy);
SkPaint* paint = builder.addLayer(blurInfo);
paint->setMaskFilter(std::move(blur));
paint->setColor(color);
return builder.detach();
}
void makePaints() {
{
// no AA
SkPaint p;
fPaints.push_back(p);
}
{
// AA
SkPaint p;
p.setAntiAlias(true);
fPaints.push_back(p);
}
{
// AA with mask filter
SkPaint p;
p.setAntiAlias(true);
p.setMaskFilter(SkBlurMaskFilter::Make(
kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkBlurMaskFilter::kHighQuality_BlurFlag));
fPaints.push_back(p);
}
{
// AA with radial shader
SkPaint p;
p.setAntiAlias(true);
SkPoint center = SkPoint::Make(SkIntToScalar(40), SkIntToScalar(40));
SkColor colors[] = { SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN };
SkScalar pos[] = { 0, SK_ScalarHalf, SK_Scalar1 };
p.setShader(SkGradientShader::MakeRadial(center, 20, colors, pos, SK_ARRAY_COUNT(colors),
SkShader::kClamp_TileMode));
fPaints.push_back(p);
}
{
// AA with blur
SkPaint p;
p.setAntiAlias(true);
p.setLooper(SkBlurDrawLooper::Make(SK_ColorBLUE,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
SkIntToScalar(5), SkIntToScalar(10),
SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
SkBlurDrawLooper::kOverrideColor_BlurFlag |
SkBlurDrawLooper::kHighQuality_BlurFlag));
fPaints.push_back(p);
}
{
// AA with stroke style
SkPaint p;
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SkIntToScalar(3));
fPaints.push_back(p);
}
{
// AA with stroke style, width = 0
SkPaint p;
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
fPaints.push_back(p);
}
{
// AA with stroke and fill style
SkPaint p;
p.setAntiAlias(true);
p.setStyle(SkPaint::kStrokeAndFill_Style);
p.setStrokeWidth(SkIntToScalar(2));
fPaints.push_back(p);
}
}
void makePaints() {
{
// no AA
SkPaint p;
p.setColor(SK_ColorWHITE);
fPaints.push_back(p);
}
{
// AA
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
fPaints.push_back(p);
}
{
// AA with translucent
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setAlpha(0x66);
fPaints.push_back(p);
}
{
// AA with mask filter
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
SkMaskFilter* mf = SkBlurMaskFilter::Create(
kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkBlurMaskFilter::kHighQuality_BlurFlag);
p.setMaskFilter(mf)->unref();
fPaints.push_back(p);
}
{
// AA with radial shader
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
SkPoint center = SkPoint::Make(SkIntToScalar(-5), SkIntToScalar(30));
SkColor colors[] = { SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN };
SkScalar pos[] = { 0, SK_ScalarHalf, SK_Scalar1 };
SkShader* s = SkGradientShader::CreateRadial(center,
SkIntToScalar(20),
colors,
pos,
SK_ARRAY_COUNT(colors),
SkShader::kClamp_TileMode);
p.setShader(s)->unref();
fPaints.push_back(p);
}
{
// AA with blur
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
SkDrawLooper* shadowLooper =
SkBlurDrawLooper::Create(SK_ColorWHITE,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)),
SkIntToScalar(5), SkIntToScalar(10),
SkBlurDrawLooper::kIgnoreTransform_BlurFlag |
SkBlurDrawLooper::kOverrideColor_BlurFlag |
SkBlurDrawLooper::kHighQuality_BlurFlag);
SkAutoUnref aurL0(shadowLooper);
p.setLooper(shadowLooper);
fPaints.push_back(p);
}
{
// AA with stroke style
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SkIntToScalar(3));
fPaints.push_back(p);
}
{
// AA with bevel-stroke style
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeJoin(SkPaint::kBevel_Join);
p.setStrokeWidth(SkIntToScalar(3));
fPaints.push_back(p);
}
{
// AA with round-stroke style
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeJoin(SkPaint::kRound_Join);
p.setStrokeWidth(SkIntToScalar(3));
fPaints.push_back(p);
}
{
// AA with stroke style, width = 0
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
fPaints.push_back(p);
}
{
// AA with stroke style, width wider than rect width and/or height
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(SkIntToScalar(40));
fPaints.push_back(p);
}
{
// AA with stroke and fill style
SkPaint p;
p.setColor(SK_ColorWHITE);
p.setAntiAlias(true);
p.setStyle(SkPaint::kStrokeAndFill_Style);
p.setStrokeWidth(SkIntToScalar(2));
fPaints.push_back(p);
}
}
static void test_bigblur(SkCanvas* canvas) {
canvas->drawColor(SK_ColorBLACK);
SkBitmap orig, mask;
SkImageDecoder::DecodeFile("/skimages/app_icon.png", &orig);
SkMaskFilter* mf = SkBlurMaskFilter::Create(8, SkBlurMaskFilter::kNormal_BlurStyle);
SkPaint paint;
paint.setMaskFilter(mf)->unref();
SkIPoint offset;
orig.extractAlpha(&mask, &paint, &offset);
paint.setColor(0xFFBB8800);
paint.setColor(SK_ColorWHITE);
int i;
canvas->save();
float gamma = 0.8;
for (i = 0; i < 5; i++) {
paint.setMaskFilter(SkTableMaskFilter::CreateGamma(gamma))->unref();
canvas->drawBitmap(mask, 0, 0, &paint);
paint.setMaskFilter(NULL);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
gamma -= 0.1;
canvas->translate(120, 0);
}
canvas->restore();
canvas->translate(0, 160);
for (i = 0; i < 5; i++) {
paint.setMaskFilter(SkTableMaskFilter::CreateClip(i*30, 255 - 20))->unref();
canvas->drawBitmap(mask, 0, 0, &paint);
paint.setMaskFilter(NULL);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
canvas->translate(120, 0);
}
#if 0
paint.setColor(0xFFFFFFFF);
canvas->drawBitmap(mask, 0, 0, &paint);
paint.setMaskFilter(NULL);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
canvas->translate(120, 0);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
canvas->translate(120, 0);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
canvas->translate(120, 0);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
canvas->translate(120, 0);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(mask, 0, 0, &paint);
canvas->drawBitmap(orig, -offset.fX, -offset.fY, &paint);
#endif
}
void onDraw(SkCanvas* canvas) override {
SkRect dstRect = { 0, 0, SkIntToScalar(64), SkIntToScalar(64)};
static const int kMaxSrcRectSize = 1 << (SkNextLog2(gBmpSize) + 2);
static const int kPadX = 30;
static const int kPadY = 40;
SkPaint paint;
paint.setAlpha(0x20);
canvas->drawBitmapRect(fLargeBitmap, SkRect::MakeIWH(gSize, gSize), &paint);
canvas->translate(SK_Scalar1 * kPadX / 2,
SK_Scalar1 * kPadY / 2);
SkPaint blackPaint;
SkScalar titleHeight = SK_Scalar1 * 24;
blackPaint.setColor(SK_ColorBLACK);
blackPaint.setTextSize(titleHeight);
blackPaint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&blackPaint);
SkString title;
title.printf("Bitmap size: %d x %d", gBmpSize, gBmpSize);
canvas->drawText(title.c_str(), title.size(), 0,
titleHeight, blackPaint);
canvas->translate(0, SK_Scalar1 * kPadY / 2 + titleHeight);
int rowCount = 0;
canvas->save();
for (int w = 1; w <= kMaxSrcRectSize; w *= 4) {
for (int h = 1; h <= kMaxSrcRectSize; h *= 4) {
SkIRect srcRect = SkIRect::MakeXYWH((gBmpSize - w) / 2, (gBmpSize - h) / 2, w, h);
fProc(canvas, fImage, fLargeBitmap, srcRect, dstRect);
SkString label;
label.appendf("%d x %d", w, h);
blackPaint.setAntiAlias(true);
blackPaint.setStyle(SkPaint::kFill_Style);
blackPaint.setTextSize(SK_Scalar1 * 10);
SkScalar baseline = dstRect.height() +
blackPaint.getTextSize() + SK_Scalar1 * 3;
canvas->drawText(label.c_str(), label.size(),
0, baseline,
blackPaint);
blackPaint.setStyle(SkPaint::kStroke_Style);
blackPaint.setStrokeWidth(SK_Scalar1);
blackPaint.setAntiAlias(false);
canvas->drawRect(dstRect, blackPaint);
canvas->translate(dstRect.width() + SK_Scalar1 * kPadX, 0);
++rowCount;
if ((dstRect.width() + kPadX) * rowCount > gSize) {
canvas->restore();
canvas->translate(0, dstRect.height() + SK_Scalar1 * kPadY);
canvas->save();
rowCount = 0;
}
}
}
{
// test the following code path:
// SkGpuDevice::drawPath() -> SkGpuDevice::drawWithMaskFilter()
SkIRect srcRect;
SkPaint paint;
SkBitmap bm;
bm = make_chessbm(5, 5);
paint.setFilterQuality(kLow_SkFilterQuality);
srcRect.setXYWH(1, 1, 3, 3);
SkMaskFilter* mf = SkBlurMaskFilter::Create(
kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkBlurMaskFilter::kHighQuality_BlurFlag |
SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
paint.setMaskFilter(mf)->unref();
canvas->drawBitmapRect(bm, srcRect, dstRect, &paint);
}
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
if (true) {
SkRect r;
r.set(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(220), SkIntToScalar(120));
SkPaint p;
canvas->saveLayer(&r, &p);
canvas->drawColor(0xFFFF0000);
p.setAlpha(1); // or 0
p.setXfermodeMode(SkXfermode::kSrc_Mode);
canvas->drawOval(r, p);
canvas->restore();
return;
}
if (false) {
SkRect r;
r.set(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(220), SkIntToScalar(120));
SkPaint p;
p.setAlpha(0x88);
p.setAntiAlias(true);
if (true) {
canvas->saveLayer(&r, &p);
p.setColor(0xFFFF0000);
canvas->drawOval(r, p);
canvas->restore();
}
p.setColor(0xFF0000FF);
r.offset(SkIntToScalar(20), SkIntToScalar(50));
canvas->drawOval(r, p);
}
if (false) {
SkPaint p;
p.setAlpha(0x88);
p.setAntiAlias(true);
canvas->translate(SkIntToScalar(300), 0);
SkRect r;
r.set(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(220), SkIntToScalar(60));
canvas->saveLayer(&r, &p, (SkCanvas::SaveFlags)(SkCanvas::kHasAlphaLayer_SaveFlag | SkCanvas::kFullColorLayer_SaveFlag));
// canvas->clipRect(r, SkRegion::kDifference_Op);
// canvas->clipRect(r, SkRegion::kIntersect_Op);
r.set(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(220), SkIntToScalar(120));
p.setColor(SK_ColorBLUE);
canvas->drawOval(r, p);
canvas->restore();
return;
}
//canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
test_fade(canvas);
return;
// canvas->setDrawFilter(new RedFilter)->unref();
SkRect r;
SkPaint p;
canvas->translate(SkIntToScalar(220), SkIntToScalar(20));
p.setAntiAlias(true);
r.set(SkIntToScalar(20), SkIntToScalar(20),
SkIntToScalar(220), SkIntToScalar(120));
p.setColor(SK_ColorBLUE);
// p.setMaskFilter(SkBlurMaskFilter::Create(SkIntToScalar(8), SkBlurMaskFilter::kNormal_BlurStyle))->unref();
canvas->drawRect(r, p);
p.setMaskFilter(NULL);
SkRect bounds = r;
bounds.fBottom = bounds.centerY();
canvas->saveLayer(&bounds, NULL, SkCanvas::kARGB_NoClipLayer_SaveFlag);
p.setColor(SK_ColorRED);
canvas->drawOval(r, p);
p.setAlpha(0x80);
p.setXfermodeMode(SkXfermode::kDstIn_Mode);
canvas->drawRect(bounds, p);
canvas->restore();
}
void
DrawTargetSkia::DrawSurfaceWithShadow(SourceSurface *aSurface,
const Point &aDest,
const Color &aColor,
const Point &aOffset,
Float aSigma,
CompositionOp aOperator)
{
MarkChanged();
mCanvas->save(SkCanvas::kMatrix_SaveFlag);
mCanvas->resetMatrix();
uint32_t blurFlags = SkBlurMaskFilter::kHighQuality_BlurFlag |
SkBlurMaskFilter::kIgnoreTransform_BlurFlag;
const SkBitmap& bitmap = static_cast<SourceSurfaceSkia*>(aSurface)->GetBitmap();
SkShader* shader = SkShader::CreateBitmapShader(bitmap, SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
SkMatrix matrix;
matrix.reset();
matrix.setTranslateX(SkFloatToScalar(aDest.x));
matrix.setTranslateY(SkFloatToScalar(aDest.y));
shader->setLocalMatrix(matrix);
SkLayerDrawLooper* dl = new SkLayerDrawLooper;
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits |= SkLayerDrawLooper::kShader_Bit;
SkPaint *layerPaint = dl->addLayer(info);
layerPaint->setShader(shader);
info.fPaintBits = 0;
info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit;
info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit;
info.fColorMode = SkXfermode::kDst_Mode;
info.fOffset.set(SkFloatToScalar(aOffset.x), SkFloatToScalar(aOffset.y));
info.fPostTranslate = true;
SkMaskFilter* mf = SkBlurMaskFilter::Create(aSigma, SkBlurMaskFilter::kNormal_BlurStyle, blurFlags);
SkColor color = ColorToSkColor(aColor, 1);
SkColorFilter* cf = SkColorFilter::CreateModeFilter(color, SkXfermode::kSrcIn_Mode);
layerPaint = dl->addLayer(info);
SkSafeUnref(layerPaint->setMaskFilter(mf));
SkSafeUnref(layerPaint->setColorFilter(cf));
layerPaint->setColor(color);
// TODO: This is using the rasterizer to calculate an alpha mask
// on both the shadow and normal layers. We should fix this
// properly so it only happens for the shadow layer
SkLayerRasterizer *raster = new SkLayerRasterizer();
SkPaint maskPaint;
SkSafeUnref(maskPaint.setShader(shader));
raster->addLayer(maskPaint, 0, 0);
SkPaint paint;
paint.setAntiAlias(true);
SkSafeUnref(paint.setRasterizer(raster));
paint.setXfermodeMode(GfxOpToSkiaOp(aOperator));
SkSafeUnref(paint.setLooper(dl));
SkRect rect = RectToSkRect(Rect(Float(aDest.x), Float(aDest.y),
Float(bitmap.width()), Float(bitmap.height())));
mCanvas->drawRect(rect, paint);
mCanvas->restore();
}
static void test_blur(skiatest::Reporter* reporter) {
SkPaint paint;
paint.setColor(SK_ColorGRAY);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(strokeWidth));
SkScalar radius = SkIntToScalar(5);
for (int style = 0; style < SkBlurMaskFilter::kBlurStyleCount; ++style) {
SkBlurMaskFilter::BlurStyle blurStyle =
static_cast<SkBlurMaskFilter::BlurStyle>(style);
const uint32_t flagPermutations = SkBlurMaskFilter::kAll_BlurFlag;
for (uint32_t flags = 0; flags < flagPermutations; ++flags) {
SkMaskFilter* filter;
filter = SkBlurMaskFilter::Create(radius, blurStyle, flags);
SkMaskFilter::BlurInfo info;
sk_bzero(&info, sizeof(info));
SkMaskFilter::BlurType type = filter->asABlur(&info);
REPORTER_ASSERT(reporter, type ==
static_cast<SkMaskFilter::BlurType>(style + 1));
REPORTER_ASSERT(reporter, info.fRadius == radius);
REPORTER_ASSERT(reporter, info.fIgnoreTransform ==
SkToBool(flags & SkBlurMaskFilter::kIgnoreTransform_BlurFlag));
REPORTER_ASSERT(reporter, info.fHighQuality ==
SkToBool(flags & SkBlurMaskFilter::kHighQuality_BlurFlag));
paint.setMaskFilter(filter);
filter->unref();
for (size_t test = 0; test < SK_ARRAY_COUNT(tests); ++test) {
SkPath path;
tests[test].addPath(&path);
SkPath strokedPath;
paint.getFillPath(path, &strokedPath);
SkRect refBound = strokedPath.getBounds();
SkIRect iref;
refBound.roundOut(&iref);
iref.inset(-outset, -outset);
SkBitmap refBitmap;
create(&refBitmap, iref, SkBitmap::kARGB_8888_Config);
SkCanvas refCanvas(refBitmap);
refCanvas.translate(SkIntToScalar(-iref.fLeft),
SkIntToScalar(-iref.fTop));
drawBG(&refCanvas);
refCanvas.drawPath(path, paint);
for (int view = 0; view < tests[test].viewLen; ++view) {
SkIRect itest = tests[test].views[view];
SkBitmap testBitmap;
create(&testBitmap, itest, SkBitmap::kARGB_8888_Config);
SkCanvas testCanvas(testBitmap);
testCanvas.translate(SkIntToScalar(-itest.fLeft),
SkIntToScalar(-itest.fTop));
drawBG(&testCanvas);
testCanvas.drawPath(path, paint);
REPORTER_ASSERT(reporter,
compare(refBitmap, iref, testBitmap, itest));
}
}
}
}
}
void GraphicsContext::setPlatformShadow(const FloatSize& size,
float blurFloat,
const Color& color,
ColorSpace colorSpace)
{
if (paintingDisabled())
return;
// Detect when there's no effective shadow and clear the looper.
if (!size.width() && !size.height() && !blurFloat) {
platformContext()->setDrawLooper(0);
return;
}
double width = size.width();
double height = size.height();
double blur = blurFloat;
uint32_t mfFlags = SkBlurMaskFilter::kHighQuality_BlurFlag;
SkXfermode::Mode colorMode = SkXfermode::kSrc_Mode;
if (m_state.shadowsIgnoreTransforms) {
// Currently only the GraphicsContext associated with the
// CanvasRenderingContext for HTMLCanvasElement have shadows ignore
// Transforms. So with this flag set, we know this state is associated
// with a CanvasRenderingContext.
mfFlags |= SkBlurMaskFilter::kIgnoreTransform_BlurFlag;
// CSS wants us to ignore the original's alpha, but Canvas wants us to
// modulate with it. Using shadowsIgnoreTransforms to tell us that we're
// in a Canvas, we change the colormode to kDst_Mode, so we don't overwrite
// it with our layer's (default opaque-black) color.
colorMode = SkXfermode::kDst_Mode;
// CG uses natural orientation for Y axis, but the HTML5 canvas spec
// does not.
// So we now flip the height since it was flipped in
// CanvasRenderingContext in order to work with CG.
height = -height;
}
SkColor c;
if (color.isValid())
c = color.rgb();
else
c = SkColorSetARGB(0xFF/3, 0, 0, 0); // "std" apple shadow color.
// TODO(tc): Should we have a max value for the blur? CG clamps at 1000.0
// for perf reasons.
SkLayerDrawLooper* dl = new SkLayerDrawLooper;
SkAutoUnref aur(dl);
// top layer, we just draw unchanged
dl->addLayer();
// lower layer contains our offset, blur, and colorfilter
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit; // our blur
info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit;
info.fColorMode = colorMode;
info.fOffset.set(width, height);
info.fPostTranslate = m_state.shadowsIgnoreTransforms;
SkMaskFilter* mf = SkBlurMaskFilter::Create(blur / 2, SkBlurMaskFilter::kNormal_BlurStyle, mfFlags);
SkColorFilter* cf = SkColorFilter::CreateModeFilter(c, SkXfermode::kSrcIn_Mode);
SkPaint* paint = dl->addLayer(info);
SkSafeUnref(paint->setMaskFilter(mf));
SkSafeUnref(paint->setColorFilter(cf));
// dl is now built, just install it
platformContext()->setDrawLooper(dl);
}
virtual void onDrawContent(SkCanvas* canvas)
{
drawBG(canvas);
SkBlurMaskFilter::BlurStyle NONE = SkBlurMaskFilter::BlurStyle(-999);
static const struct
{
SkBlurMaskFilter::BlurStyle fStyle;
int fCx, fCy;
} gRecs[] =
{
{ NONE, 0, 0 },
{ SkBlurMaskFilter::kInner_BlurStyle, -1, 0 },
{ SkBlurMaskFilter::kNormal_BlurStyle, 0, 1 },
{ SkBlurMaskFilter::kSolid_BlurStyle, 0, -1 },
{ SkBlurMaskFilter::kOuter_BlurStyle, 1, 0 },
};
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(25);
canvas->translate(-40, 0);
SkBlurMaskFilter::BlurFlags flags = SkBlurMaskFilter::kNone_BlurFlag;
for (int j = 0; j < 2; j++)
{
canvas->save();
paint.setColor(SK_ColorBLUE);
for (size_t i = 0; i < SK_ARRAY_COUNT(gRecs); i++)
{
if (gRecs[i].fStyle != NONE)
{
SkMaskFilter* mf = SkBlurMaskFilter::Create(20,
gRecs[i].fStyle,
flags);
paint.setMaskFilter(mf)->unref();
}
else
{
paint.setMaskFilter(NULL);
}
canvas->drawCircle(200 + gRecs[i].fCx*100.f,
200 + gRecs[i].fCy*100.f, 50, paint);
}
// draw text
{
SkMaskFilter* mf = SkBlurMaskFilter::Create(4,
SkBlurMaskFilter::kNormal_BlurStyle,
flags);
paint.setMaskFilter(mf)->unref();
SkScalar x = SkIntToScalar(70);
SkScalar y = SkIntToScalar(400);
paint.setColor(SK_ColorBLACK);
canvas->drawText("Hamburgefons Style", 18, x, y, paint);
canvas->drawText("Hamburgefons Style", 18, x, y + SkIntToScalar(50), paint);
paint.setMaskFilter(NULL);
paint.setColor(SK_ColorWHITE);
x -= SkIntToScalar(2);
y -= SkIntToScalar(2);
canvas->drawText("Hamburgefons Style", 18, x, y, paint);
}
canvas->restore();
flags = SkBlurMaskFilter::kHighQuality_BlurFlag;
canvas->translate(350, 0);
}
}
virtual void onDraw(SkCanvas* canvas) {
drawBG(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 SkBlurMaskFilter::BlurStyle gStyle[] = {
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMaskFilter::kInner_BlurStyle,
SkBlurMaskFilter::kOuter_BlurStyle,
SkBlurMaskFilter::kSolid_BlurStyle,
};
for (int x = 0; x < 5; x++) {
SkMaskFilter* mf;
SkScalar radius = 4;
for (int y = 0; y < 10; y++) {
if (x) {
mf = SkBlurMaskFilter::Create(radius, gStyle[x - 1]);
paint.setMaskFilter(mf)->unref();
}
canvas->drawText("Title Bar", 9, x*100, y*30, paint);
radius *= 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 void do_fuzz(SkCanvas* canvas) {
SkPath path;
SkPaint paint;
paint.setAntiAlias(true);
for (int i=0;i<100;i++) {
switch (R(33)) {
case 0:
paint.setColor(make_fill());
break;
case 1:
paint.setAlpha(gRand.nextU() & 0xFF);
break;
case 2: {
SkXfermode::Mode mode;
switch (R(3)) {
case 0: mode = SkXfermode::kSrc_Mode; break;
case 1: mode = SkXfermode::kXor_Mode; break;
case 2:
default: // silence warning
mode = SkXfermode::kSrcOver_Mode; break;
}
paint.setXfermodeMode(mode);
}
break;
case 3:
switch (R(2)) {
case 0: paint.setStrokeCap(SkPaint::kRound_Cap); break;
case 1: paint.setStrokeCap(SkPaint::kButt_Cap); break;
}
break;
case 4:
switch (R(2)) {
case 0: paint.setStrokeJoin(SkPaint::kRound_Join); break;
case 1: paint.setStrokeJoin(SkPaint::kMiter_Join); break;
}
break;
case 5:
paint.setStrokeWidth(make_number());
break;
case 6:
paint.setStrokeMiter(make_number());
break;
case 7:
if (quick == true) break;
SkSafeUnref(paint.setMaskFilter(SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
make_number())));
break;
case 8:
if (quick == true) break;
//ctx.shadowColor = make_fill();
break;
case 9:
if (quick == true) break;
//ctx.shadowOffsetX = make_number();
//ctx.shadowOffsetY = make_number();
break;
case 10:
canvas->restore();
break;
case 11:
canvas->rotate(make_number());
break;
case 12:
canvas->save();
break;
case 13:
canvas->scale(-1,-1);
break;
case 14:
if (quick == true) break;
if (transval == 0) {
transval = make_number();
canvas->translate(transval,0);
} else {
canvas->translate(-transval,0);
transval = 0;
}
break;
case 15: {
SkRect r;
r.set(make_number(),make_number(),make_number(),make_number());
SkPaint::Style s = paint.getStyle();
paint.setStyle(SkPaint::kFill_Style);
canvas->drawRect(r, paint);
paint.setStyle(s);
// clearrect
} break;
case 16:
if (quick == true) break;
// ctx.drawImage(imgObj,make_number(),make_number(),make_number(),make_number(),make_number(),make_number(),make_number(),make_number());
break;
case 17: {
SkRect r;
r.set(make_number(),make_number(),make_number(),make_number());
SkPaint::Style s = paint.getStyle();
paint.setStyle(SkPaint::kFill_Style);
canvas->drawRect(r, paint);
paint.setStyle(s);
} break;
case 18:
path.reset();
break;
case 19:
// ctx.clip() is evil.
break;
case 20:
path.close();
break;
case 21: {
SkPaint::Style s = paint.getStyle();
paint.setStyle(SkPaint::kFill_Style);
canvas->drawPath(path, paint);
paint.setStyle(s);
} break;
case 22: {
SkPaint::Style s = paint.getStyle();
paint.setStyle(SkPaint::kFill_Style);
canvas->drawPath(path, paint);
paint.setStyle(s);
} break;
case 23: {
SkRect r;
r.set(make_number(),make_number(),make_number(),make_number());
SkPaint::Style s = paint.getStyle();
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawRect(r, paint);
paint.setStyle(s);
} break;
case 24:
if (quick == true) break;
//ctx.arc(make_number(),make_number(),make_number(),make_number(),make_number(),true);
break;
case 25:
if (quick == true) break;
//ctx.arcTo(make_number(),make_number(),make_number(),make_number(),make_number());
break;
case 26:
if (quick == true) break;
//ctx.bezierCurveTo(make_number(),make_number(),make_number(),make_number(),make_number(),make_number());
break;
case 27:
path.lineTo(make_number(),make_number());
break;
case 28:
path.moveTo(make_number(),make_number());
break;
case 29:
if (quick == true) break;
path.quadTo(make_number(),make_number(),make_number(),make_number());
break;
case 30: {
if (quick == true) break;
SkMatrix matrix;
set2x3(&matrix, make_number(),make_number(),make_number(),make_number(),make_number(),make_number());
canvas->concat(matrix);
} break;
case 31: {
if (quick == true) break;
SkMatrix matrix;
set2x3(&matrix, make_number(),make_number(),make_number(),make_number(),make_number(),make_number());
canvas->setMatrix(matrix);
} break;
case 32:
if (scale_large == true) {
switch (scval) {
case 0: canvas->scale(-1000000000,1);
canvas->scale(-1000000000,1);
scval = 1; break;
case 1: canvas->scale(-.000000001f,1); scval = 2; break;
case 2: canvas->scale(-.000000001f,1); scval = 0; break;
}
}
break;
}
}
}
void onDraw(SkCanvas* canvas) override {
constexpr SkScalar kMaxR = kMaxRadius + kMaxBlurRadius;
auto almostCircleMaker = [] (SkScalar radius, SkPath* dst) {
dst->reset();
dst->addArc(SkRect::MakeXYWH(-radius, -radius, 2 * radius, 2 * radius), 0, 355);
dst->setIsVolatile(true);
dst->close();
};
auto blurMaker = [] (SkScalar radius) ->sk_sp<SkMaskFilter> {
return SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(radius),
SkBlurMaskFilter::kHighQuality_BlurFlag);
};
SkPaint paint;
paint.setColor(SK_ColorBLACK);
if (this->getMode() == kSample_Mode) {
paint.setMaskFilter(blurMaker(fAnimBlurRadius));
SkISize size = canvas->getBaseLayerSize();
SkPath almostCircle;
almostCircleMaker(fAnimRadius, &almostCircle);
canvas->save();
canvas->translate(size.fWidth / 2.f, size.fHeight / 4.f);
canvas->drawCircle(0, 0, fAnimRadius, paint);
canvas->translate(0, 2 * kMaxR);
canvas->drawPath(almostCircle, paint);
canvas->restore();
} else {
bool benchMode = this->getMode() == kBench_Mode;
canvas->save();
constexpr SkScalar kPad = 5;
constexpr SkScalar kRadiusSteps = 5;
constexpr SkScalar kBlurRadiusSteps = 5;
canvas->translate(kPad + kMinRadius + kMaxBlurRadius,
kPad + kMinRadius + kMaxBlurRadius);
constexpr SkScalar kDeltaRadius = (kMaxRadius - kMinRadius) / kRadiusSteps;
constexpr SkScalar kDeltaBlurRadius = (kMaxBlurRadius - kMinBlurRadius) /
kBlurRadiusSteps;
SkScalar lineWidth = 0;
if (!benchMode) {
for (int r = 0; r < kRadiusSteps - 1; ++r) {
const SkScalar radius = r * kDeltaRadius + kMinRadius;
lineWidth += 2 * (radius + kMaxBlurRadius) + kPad;
}
}
for (int br = 0; br < kBlurRadiusSteps; ++br) {
SkScalar blurRadius = br * kDeltaBlurRadius + kMinBlurRadius;
if (benchMode) {
blurRadius += fRandom.nextSScalar1() * kDeltaBlurRadius;
}
const SkScalar maxRowR = blurRadius + kMaxRadius;
paint.setMaskFilter(blurMaker(blurRadius));
canvas->save();
for (int r = 0; r < kRadiusSteps; ++r) {
SkScalar radius = r * kDeltaRadius + kMinRadius;
if (benchMode) {
radius += fRandom.nextSScalar1() * kDeltaRadius;
}
SkPath almostCircle;
if (!benchMode) {
almostCircleMaker(radius, &almostCircle);
}
canvas->save();
canvas->drawCircle(0, 0, radius, paint);
canvas->translate(0, 2 * maxRowR + kPad);
if (!benchMode) {
canvas->drawPath(almostCircle, paint);
}
canvas->restore();
const SkScalar maxColR = radius + kMaxBlurRadius;
canvas->translate(maxColR * 2 + kPad, 0);
}
canvas->restore();
if (!benchMode) {
SkPaint blackPaint;
blackPaint.setColor(SK_ColorBLACK);
const SkScalar lineY = 3 * maxRowR + 1.5f * kPad;
if (br != kBlurRadiusSteps - 1) {
canvas->drawLine(0, lineY, lineWidth, lineY, blackPaint);
}
}
canvas->translate(0, maxRowR * 4 + 2 * kPad);
}
canvas->restore();
}
}
