void onDrawContent(SkCanvas* canvas) override {
if (!fInitialized) {
this->init();
fInitialized = true;
}
canvas->clear(0xFFDDDDDD);
SkPaint paint;
make_paint(&paint, fTypeface);
// draw a consistent run of the 'words' - one word per line
int index = fIndex;
for (SkScalar y = 0.0f; y < 1024.0f; ) {
y += -fMetrics.fAscent;
canvas->drawTextBlob(fBlobs[index], 0, y, paint);
y += fMetrics.fDescent + fMetrics.fLeading;
++index;
index %= fBlobs.count();
}
// now "fling" a random amount
fIndex += fRand.nextRangeU(5, 20);
fIndex %= fBlobs.count();
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
make_paint(&paint, SkShader::kRepeat_TileMode);
// canvas->scale(SK_Scalar1*2, SK_Scalar1);
canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
canvas->drawPaint(paint);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
SkPaint paint;
make_paint(&paint, SkShader::kRepeat_TileMode);
// canvas->scale(SK_Scalar1*2, SK_Scalar1);
canvas->translate(SkIntToScalar(100), SkIntToScalar(100));
canvas->drawPaint(paint);
}
static SkPaint make_paint() {
SkPaint paint;
if (fuzz->exhausted()) {
return 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_number(false));
paint.setStrokeMiter(make_number(false));
paint.setStrokeCap(make_paint_cap());
paint.setStrokeJoin(make_paint_join());
paint.setColorFilter(make_color_filter());
paint.setBlendMode(make_blendmode());
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()));
}
SkLayerRasterizer::Builder rasterizerBuilder;
SkPaint paintForRasterizer;
if (make_bool()) {
paintForRasterizer = make_paint();
}
rasterizerBuilder.addLayer(paintForRasterizer);
paint.setRasterizer(rasterizerBuilder.detach());
paint.setImageFilter(make_image_filter());
bool a, b, c;
fuzz->next(&a, &b, &c);
sk_sp<SkData> data(make_3Dlut(nullptr, a, b, c));
paint.setTextAlign(make_paint_align());
SkScalar d, e, f;
fuzz->next(&d, &e, &f);
paint.setTextSize(d);
paint.setTextScaleX(e);
paint.setTextSkewX(f);
paint.setTextEncoding(make_paint_text_encoding());
return 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.setUnderlineText(make_bool());
paint.setStrikeThruText(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.setXfermodeMode(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
SkAutoTUnref<SkTypeface> typeface(
SkTypeface::CreateFromName(make_font_name().c_str(), make_typeface_style()));
paint.setTypeface(typeface);
}
SkLayerRasterizer::Builder rasterizerBuilder;
SkPaint paintForRasterizer;
if (R(2) == 1) {
paintForRasterizer = make_paint();
}
rasterizerBuilder.addLayer(paintForRasterizer);
paint.setRasterizer(rasterizerBuilder.detach());
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;
}
void init() {
fTypeface = chinese_typeface();
SkPaint paint;
make_paint(&paint, fTypeface);
paint.getFontMetrics(&fMetrics);
SkUnichar glyphs[kWordLength];
for (int32_t i = 0; i < kNumBlobs; ++i) {
this->createRandomWord(glyphs);
SkTextBlobBuilder builder;
sk_tool_utils::add_to_text_blob_w_len(&builder, (const char*) glyphs, kWordLength*4,
paint, 0, 0);
fBlobs.emplace_back(builder.make());
}
fIndex = 0;
}
// test drawing with strips of fading gradient above and below
static void test_fade(SkCanvas* canvas) {
SkAutoCanvasRestore ar(canvas, true);
SkRect r;
SkPaint p;
p.setAlpha(0x88);
SkAutoCanvasRestore(canvas, false);
// create the layers
r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100));
canvas->clipRect(r);
r.fBottom = SkIntToScalar(20);
canvas->saveLayer(&r, NULL, (SkCanvas::SaveFlags)(SkCanvas::kHasAlphaLayer_SaveFlag | SkCanvas::kFullColorLayer_SaveFlag));
r.fTop = SkIntToScalar(80);
r.fBottom = SkIntToScalar(100);
canvas->saveLayer(&r, NULL, (SkCanvas::SaveFlags)(SkCanvas::kHasAlphaLayer_SaveFlag | SkCanvas::kFullColorLayer_SaveFlag));
// now draw the "content"
if (true) {
r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100));
canvas->saveLayerAlpha(&r, 0x80);
SkPaint p;
p.setColor(SK_ColorRED);
p.setAntiAlias(true);
canvas->drawOval(r, p);
dump_layers("inside layer alpha", canvas);
canvas->restore();
} else {
r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100));
SkPaint p;
p.setColor(SK_ColorRED);
p.setAntiAlias(true);
canvas->drawOval(r, p);
}
// return;
dump_layers("outside layer alpha", canvas);
// now apply an effect
SkPaint paint;
make_paint(&paint);
r.set(0, 0, SkIntToScalar(100), SkIntToScalar(20));
// SkDebugf("--------- draw top grad\n");
canvas->drawRect(r, paint);
SkMatrix m;
SkShader* s = paint.getShader();
m.setScale(SK_Scalar1, -SK_Scalar1);
m.postTranslate(0, SkIntToScalar(100));
s->setLocalMatrix(m);
r.fTop = SkIntToScalar(80);
r.fBottom = SkIntToScalar(100);
// SkDebugf("--------- draw bot grad\n");
canvas->drawRect(r, paint);
}
static SkImageFilter* make_image_filter(bool canBeNull) {
SkImageFilter* filter = 0;
// Add a 1 in 3 chance to get a nullptr input
if (canBeNull && (R(3) == 1)) { return filter; }
enum { ALPHA_THRESHOLD, MERGE, COLOR, LUT3D, BLUR, MAGNIFIER,
DOWN_SAMPLE, XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE,
DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW,
MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, PAINT, NUM_FILTERS };
switch (R(NUM_FILTERS)) {
case ALPHA_THRESHOLD:
filter = SkAlphaThresholdFilter::Create(make_region(), make_scalar(), make_scalar());
break;
case MERGE:
filter = SkMergeImageFilter::Create(make_image_filter(), make_image_filter(), make_xfermode());
break;
case COLOR:
{
SkAutoTUnref<SkColorFilter> cf(make_color_filter());
filter = cf.get() ? SkColorFilterImageFilter::Create(cf, make_image_filter()) : 0;
}
break;
case LUT3D:
{
int cubeDimension;
SkAutoDataUnref lut3D(make_3Dlut(&cubeDimension, (R(2) == 1), (R(2) == 1), (R(2) == 1)));
SkAutoTUnref<SkColorFilter> cf(SkColorCubeFilter::Create(lut3D, cubeDimension));
filter = cf.get() ? SkColorFilterImageFilter::Create(cf, make_image_filter()) : 0;
}
break;
case BLUR:
filter = SkBlurImageFilter::Create(make_scalar(true), make_scalar(true), make_image_filter());
break;
case MAGNIFIER:
filter = SkMagnifierImageFilter::Create(make_rect(), make_scalar(true));
break;
case DOWN_SAMPLE:
filter = SkDownSampleImageFilter::Create(make_scalar());
break;
case XFERMODE:
{
SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(make_xfermode()));
filter = SkXfermodeImageFilter::Create(mode, make_image_filter(), make_image_filter());
}
break;
case OFFSET:
filter = SkOffsetImageFilter::Create(make_scalar(), make_scalar(), make_image_filter());
break;
case MATRIX:
filter = SkImageFilter::CreateMatrixFilter(make_matrix(),
(SkFilterQuality)R(4),
make_image_filter());
break;
case MATRIX_CONVOLUTION:
{
SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize)));
SkISize size = SkISize::Make(R(10)+1, R(10)+1);
int arraySize = size.width() * size.height();
SkTArray<SkScalar> kernel(arraySize);
for (int i = 0; i < arraySize; ++i) {
kernel.push_back() = make_scalar();
}
SkIPoint kernelOffset = SkIPoint::Make(R(SkIntToScalar(size.width())),
R(SkIntToScalar(size.height())));
filter = SkMatrixConvolutionImageFilter::Create(size,
kernel.begin(),
make_scalar(),
make_scalar(),
kernelOffset,
(SkMatrixConvolutionImageFilter::TileMode)R(3),
R(2) == 1,
make_image_filter(),
&cropR);
}
break;
case COMPOSE:
filter = SkComposeImageFilter::Create(make_image_filter(), make_image_filter());
break;
case DISTANT_LIGHT:
filter = (R(2) == 1) ?
SkLightingImageFilter::CreateDistantLitDiffuse(make_point(),
make_color(), make_scalar(), make_scalar(), make_image_filter()) :
SkLightingImageFilter::CreateDistantLitSpecular(make_point(),
make_color(), make_scalar(), make_scalar(), SkIntToScalar(R(10)),
make_image_filter());
break;
case POINT_LIGHT:
filter = (R(2) == 1) ?
SkLightingImageFilter::CreatePointLitDiffuse(make_point(),
make_color(), make_scalar(), make_scalar(), make_image_filter()) :
SkLightingImageFilter::CreatePointLitSpecular(make_point(),
make_color(), make_scalar(), make_scalar(), SkIntToScalar(R(10)),
make_image_filter());
break;
case SPOT_LIGHT:
filter = (R(2) == 1) ?
SkLightingImageFilter::CreateSpotLitDiffuse(SkPoint3::Make(0, 0, 0),
make_point(), make_scalar(), make_scalar(), make_color(),
make_scalar(), make_scalar(), make_image_filter()) :
SkLightingImageFilter::CreateSpotLitSpecular(SkPoint3::Make(0, 0, 0),
make_point(), make_scalar(), make_scalar(), make_color(),
make_scalar(), make_scalar(), SkIntToScalar(R(10)), make_image_filter());
break;
case NOISE:
{
SkAutoTUnref<SkShader> shader((R(2) == 1) ?
SkPerlinNoiseShader::CreateFractalNoise(
make_scalar(true), make_scalar(true), R(10.0f), make_scalar()) :
SkPerlinNoiseShader::CreateTurbulence(
make_scalar(true), make_scalar(true), R(10.0f), make_scalar()));
SkPaint paint;
paint.setShader(shader);
SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize)));
filter = SkPaintImageFilter::Create(paint, &cropR);
}
break;
case DROP_SHADOW:
filter = SkDropShadowImageFilter::Create(make_scalar(), make_scalar(), make_scalar(true),
make_scalar(true), make_color(), make_shadow_mode(), make_image_filter(),
nullptr);
break;
case MORPHOLOGY:
if (R(2) == 1) {
filter = SkDilateImageFilter::Create(R(static_cast<float>(kBitmapSize)),
R(static_cast<float>(kBitmapSize)), make_image_filter());
} else {
filter = SkErodeImageFilter::Create(R(static_cast<float>(kBitmapSize)),
R(static_cast<float>(kBitmapSize)), make_image_filter());
}
break;
case BITMAP:
{
SkAutoTUnref<SkImage> image(SkImage::NewFromBitmap(make_bitmap()));
if (R(2) == 1) {
filter = SkImageSource::Create(image, make_rect(), make_rect(), kHigh_SkFilterQuality);
} else {
filter = SkImageSource::Create(image);
}
}
break;
case DISPLACE:
filter = SkDisplacementMapEffect::Create(make_channel_selector_type(),
make_channel_selector_type(), make_scalar(),
make_image_filter(false), make_image_filter());
break;
case TILE:
filter = SkTileImageFilter::Create(make_rect(), make_rect(), make_image_filter(false));
break;
case PICTURE:
{
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize),
&factory, 0);
drawSomething(recordingCanvas);
SkAutoTUnref<SkPicture> pict(recorder.endRecording());
filter = SkPictureImageFilter::Create(pict.get(), make_rect());
}
break;
case PAINT:
{
SkImageFilter::CropRect cropR(make_rect());
filter = SkPaintImageFilter::Create(make_paint(), &cropR);
}
default:
break;
}
return (filter || canBeNull) ? filter : make_image_filter(canBeNull);
}
static sk_sp<SkImageFilter> make_image_filter(bool canBeNull) {
sk_sp<SkImageFilter> filter;
// Add a 1 in 3 chance to get a nullptr input
uint8_t i;
fuzz->nextRange(&i, 0, 2);
if (fuzz->exhausted() || (canBeNull && i == 1)) {
return filter;
}
enum { ALPHA_THRESHOLD, MERGE, COLOR, BLUR, MAGNIFIER,
BLENDMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE,
DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW,
MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, PAINT, NUM_FILTERS };
uint8_t s;
fuzz->nextRange(&s, 0, NUM_FILTERS - 1);
switch (s) {
case ALPHA_THRESHOLD: {
SkRegion reg = make_region();
SkScalar innerMin, outerMax;
fuzz->next(&innerMin, &outerMax);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkAlphaThresholdFilter::Make(reg, innerMin, outerMax, fil);
break;
}
case MERGE: {
sk_sp<SkImageFilter> filA = make_image_filter();
sk_sp<SkImageFilter> filB = make_image_filter();
filter = SkMergeImageFilter::Make(filA, filB);
break;
}
case COLOR: {
sk_sp<SkColorFilter> cf(make_color_filter());
filter = cf ? SkColorFilterImageFilter::Make(std::move(cf), make_image_filter())
: nullptr;
break;
}
case BLUR: {
SkScalar sX = make_number(true);
SkScalar sY = make_number(true);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkBlurImageFilter::Make(sX, sY, fil);
break;
}
case MAGNIFIER: {
SkRect rect = make_rect();
SkScalar inset = make_number(true);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkMagnifierImageFilter::Make(rect, inset, fil);
break;
}
case BLENDMODE: {
SkBlendMode mode = make_blendmode();
sk_sp<SkImageFilter> filA = make_image_filter();
sk_sp<SkImageFilter> filB = make_image_filter();
filter = SkXfermodeImageFilter::Make(mode, filA, filB, nullptr);
break;
}
case OFFSET: {
SkScalar dx, dy;
fuzz->next(&dx, &dy);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkOffsetImageFilter::Make(dx, dy, fil);
break;
}
case MATRIX: {
SkMatrix m;
init_matrix(&m);
int qual;
fuzz->nextRange(&qual, 0, SkFilterQuality::kLast_SkFilterQuality - 1);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkImageFilter::MakeMatrixFilter(m, (SkFilterQuality)qual, fil);
break;
}
case MATRIX_CONVOLUTION: {
SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize)));
int w, h;
fuzz->nextRange(&w, 1, 10);
fuzz->nextRange(&h, 1, 10);
SkISize size = SkISize::Make(w, h);
int arraySize = size.width() * size.height();
SkTArray<SkScalar> kernel(arraySize);
for (int i = 0; i < arraySize; ++i) {
kernel.push_back() = make_number(false);
}
fuzz->nextRange(&w, 0, size.width() - 1);
fuzz->nextRange(&h, 0, size.height() - 1);
SkIPoint kernelOffset = SkIPoint::Make(w, h);
int mode;
fuzz->nextRange(&mode, 0, SkMatrixConvolutionImageFilter::kMax_TileMode - 1);
bool convolveAlpha = make_bool();
SkScalar gain, bias;
fuzz->next(&gain, &bias);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkMatrixConvolutionImageFilter::Make(size,
kernel.begin(),
gain,
bias,
kernelOffset,
(SkMatrixConvolutionImageFilter::TileMode)mode,
convolveAlpha,
fil,
&cropR);
break;
}
case COMPOSE: {
sk_sp<SkImageFilter> filA = make_image_filter();
sk_sp<SkImageFilter> filB = make_image_filter();
filter = SkComposeImageFilter::Make(filA, filB);
break;
}
case DISTANT_LIGHT: {
SkPoint3 p = make_point();
SkColor c = make_color();
SkScalar ss, kd;
fuzz->next(&ss, &kd);
int shininess;
fuzz->nextRange(&shininess, 0, 9);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = make_bool()
? SkLightingImageFilter::MakeDistantLitDiffuse(p, c, ss, kd, fil)
: SkLightingImageFilter::MakeDistantLitSpecular(p, c, ss, kd, shininess, fil);
break;
}
case POINT_LIGHT: {
SkPoint3 p = make_point();
SkColor c = make_color();
SkScalar ss, kd;
fuzz->next(&ss, &kd);
int shininess;
fuzz->nextRange(&shininess, 0, 9);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = make_bool()
? SkLightingImageFilter::MakePointLitDiffuse(p, c, ss, kd, fil)
: SkLightingImageFilter::MakePointLitSpecular(p, c, ss, kd, shininess, fil);
break;
}
case SPOT_LIGHT: {
SkPoint3 p = make_point();
SkColor c = make_color();
SkScalar se, ca, ss, kd;
fuzz->next(&se, &ca, &ss, &kd);
int shininess;
fuzz->nextRange(&shininess, 0, 9);
sk_sp<SkImageFilter> fil = make_image_filter();
filter = make_bool()
? SkLightingImageFilter::MakeSpotLitDiffuse(SkPoint3::Make(0, 0, 0),
p, se, ca, c, ss, kd, fil)
: SkLightingImageFilter::MakeSpotLitSpecular(SkPoint3::Make(0, 0, 0),
p, se, ca, c, ss, kd,
shininess, fil);
break;
}
case NOISE: {
SkScalar bfx = make_number(true);
SkScalar bfy = make_number(true);
SkScalar seed = make_number(false);
int octaves;
fuzz->nextRange(&octaves, 0, 9);
sk_sp<SkShader> shader(make_bool()
? SkPerlinNoiseShader::MakeFractalNoise(bfx, bfy, octaves, seed)
: SkPerlinNoiseShader::MakeTurbulence(bfx, bfy, octaves, seed));
SkPaint paint;
paint.setShader(shader);
SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize)));
filter = SkPaintImageFilter::Make(paint, &cropR);
break;
}
case DROP_SHADOW: {
SkScalar dx, dy, sx, sy;
fuzz->next(&dx, &dy);
sx = make_number(true);
sy = make_number(true);
SkColor c = make_color();
SkDropShadowImageFilter::ShadowMode mode = make_shadow_mode();
sk_sp<SkImageFilter> fil = make_image_filter();
filter = SkDropShadowImageFilter::Make(dx, dy, sx, sy, c, mode, fil, nullptr);
break;
}
case MORPHOLOGY: {
int rx, ry;
fuzz->nextRange(&rx, 0, kBitmapSize);
fuzz->nextRange(&ry, 0, kBitmapSize);
sk_sp<SkImageFilter> fil = make_image_filter();
if (make_bool()) {
filter = SkDilateImageFilter::Make(rx, ry, fil);
} else {
filter = SkErodeImageFilter::Make(rx, ry, fil);
}
break;
}
case BITMAP: {
sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_bitmap()));
if (make_bool()) {
filter = SkImageSource::Make(std::move(image),
make_rect(),
make_rect(),
kHigh_SkFilterQuality);
} else {
filter = SkImageSource::Make(std::move(image));
}
break;
}
case DISPLACE: {
SkDisplacementMapEffect::ChannelSelectorType x = make_channel_selector_type();
SkDisplacementMapEffect::ChannelSelectorType y = make_channel_selector_type();
SkScalar scale = make_number(false);
sk_sp<SkImageFilter> filA = make_image_filter(false);
sk_sp<SkImageFilter> filB = make_image_filter();
filter = SkDisplacementMapEffect::Make(x, y, scale, filA, filB);
break;
}
case TILE: {
SkRect src = make_rect();
SkRect dest = make_rect();
sk_sp<SkImageFilter> fil = make_image_filter(false);
filter = SkTileImageFilter::Make(src, dest, fil);
break;
}
case PICTURE: {
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize),
&factory, 0);
drawSomething(recordingCanvas);
sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture());
filter = SkPictureImageFilter::Make(pict, make_rect());
break;
}
case PAINT: {
SkImageFilter::CropRect cropR(make_rect());
filter = SkPaintImageFilter::Make(make_paint(), &cropR);
break;
}
default:
break;
}
return filter;
}