// Verify that associated bitmap cache entries are purged on SkImage destruction.
DEF_TEST(BitmapCache_discarded_image, reporter) {
// Cache entries associated with SkImages fall into two categories:
//
// 1) generated image bitmaps (managed by the image cacherator)
// 2) scaled/resampled bitmaps (cached when HQ filters are used)
//
// To exercise the first cache type, we use generated/picture-backed SkImages.
// To exercise the latter, we draw scaled bitmap images using HQ filters.
const SkMatrix xforms[] = {
SkMatrix::MakeScale(1, 1),
SkMatrix::MakeScale(1.7f, 0.5f),
};
for (size_t i = 0; i < SK_ARRAY_COUNT(xforms); ++i) {
test_discarded_image(reporter, xforms[i], []() {
auto surface(SkSurface::MakeRasterN32Premul(10, 10));
surface->getCanvas()->clear(SK_ColorCYAN);
return surface->makeImageSnapshot();
});
test_discarded_image(reporter, xforms[i], []() {
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(10, 10);
canvas->clear(SK_ColorCYAN);
return SkImage::MakeFromPicture(recorder.finishRecordingAsPicture(),
SkISize::Make(10, 10), nullptr, nullptr,
SkImage::BitDepth::kU8,
SkColorSpace::MakeSRGB());
});
}
}
void onDraw(SkCanvas* canvas) override {
SkPaint blurPaint;
SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(5.0f, 5.0f));
blurPaint.setImageFilter(blur);
const SkScalar tile_size = SkIntToScalar(128);
SkRect bounds;
if (!canvas->getClipBounds(&bounds)) {
bounds.setEmpty();
}
int ts = SkScalarCeilToInt(tile_size);
SkImageInfo info = SkImageInfo::MakeN32Premul(ts, ts);
auto tileSurface(canvas->makeSurface(info));
if (!tileSurface) {
tileSurface = SkSurface::MakeRaster(info);
}
SkCanvas* tileCanvas = tileSurface->getCanvas();
for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
tileCanvas->save();
tileCanvas->clear(0);
tileCanvas->translate(-x, -y);
SkRect rect = SkRect::MakeWH(WIDTH, HEIGHT);
tileCanvas->saveLayer(&rect, &blurPaint);
SkRRect rrect = SkRRect::MakeRectXY(rect.makeInset(20, 20), 25, 25);
tileCanvas->clipRRect(rrect, SkRegion::kDifference_Op, true);
SkPaint paint;
tileCanvas->drawRect(rect, paint);
tileCanvas->restore();
tileCanvas->restore();
canvas->drawImage(tileSurface->makeImageSnapshot().get(), x, y);
}
}
}
static sk_sp<SkImage> render(const SkTextBlob* blob) {
auto surf = SkSurface::MakeRasterN32Premul(SkScalarRoundToInt(blob->bounds().width()),
SkScalarRoundToInt(blob->bounds().height()));
if (!surf) {
return nullptr; // bounds are empty?
}
surf->getCanvas()->clear(SK_ColorWHITE);
surf->getCanvas()->drawTextBlob(blob, -blob->bounds().left(), -blob->bounds().top(), SkPaint());
return surf->makeImageSnapshot();
}
void draw(SkCanvas* canvas) {
SkDebugf("SkSurface::MakeNull(0, 0) %c= nullptr\n", SkSurface::MakeNull(0, 0) == nullptr ?
'=' : '!');
const int w = 37;
const int h = 1000;
auto surf = SkSurface::MakeNull(w, h);
auto nullCanvas = surf->getCanvas();
nullCanvas->drawPaint(SkPaint()); // does not crash, nothing draws
SkDebugf("surf->makeImageSnapshot() %c= nullptr\n", surf->makeImageSnapshot() == nullptr ?
'=' : '!');
}
static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) {
SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
auto surface(rootCanvas->makeSurface(info));
if (!surface) {
surface = SkSurface::MakeRaster(info);
}
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
surface->getCanvas()->drawCircle(50, 50, 50, paint);
return surface->makeImageSnapshot();
}
static void draw_zero_length_capped_paths(SkCanvas* canvas, bool aa) {
canvas->translate(kCellPad, kCellPad);
SkImageInfo info = canvas->imageInfo().makeWH(kCellWidth, kCellHeight);
auto surface = canvas->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRasterN32Premul(kCellWidth, kCellHeight);
}
SkPaint paint;
paint.setColor(SK_ColorWHITE);
paint.setAntiAlias(aa);
paint.setStyle(SkPaint::kStroke_Style);
int numFailedTests = 0;
for (auto cap : kCaps) {
for (auto width : kWidths) {
paint.setStrokeCap(cap);
paint.setStrokeWidth(width);
canvas->save();
for (auto verb : kAllVerbs) {
SkString pathStr;
pathStr.appendf("M %f %f ", (kCellWidth - 1) * 0.5f, (kCellHeight - 1) * 0.5f);
if (verb) {
pathStr.append(verb);
}
SkPath path;
SkParsePath::FromSVGString(pathStr.c_str(), &path);
surface->getCanvas()->clear(SK_ColorTRANSPARENT);
surface->getCanvas()->drawPath(path, paint);
auto img = surface->makeImageSnapshot();
// All cases should draw one cap, except for butt capped, and dangling moves
// (without a verb or close), which shouldn't draw anything.
int expectedCaps = ((SkPaint::kButt_Cap == cap) || !verb) ? 0 : 1;
if (!draw_path_cell(canvas, img.get(), expectedCaps)) {
++numFailedTests;
}
canvas->translate(kCellWidth + kCellPad, 0);
}
canvas->restore();
canvas->translate(0, kCellHeight + kCellPad);
}
}
canvas->drawColor(numFailedTests > 0 ? kFailureRed : kSuccessGreen);
}
DEF_TEST(RecordDraw_drawImage, r){
class SkCanvasMock : public SkCanvas {
public:
SkCanvasMock(int width, int height) : SkCanvas(width, height) {
this->resetTestValues();
}
void onDrawImage(const SkImage* image, SkScalar left, SkScalar top,
const SkPaint* paint) override {
fDrawImageCalled = true;
}
void onDrawImageRect(const SkImage* image, const SkRect* src, const SkRect& dst,
const SkPaint* paint, SrcRectConstraint) override {
fDrawImageRectCalled = true;
}
void resetTestValues() {
fDrawImageCalled = fDrawImageRectCalled = false;
}
bool fDrawImageCalled;
bool fDrawImageRectCalled;
};
auto surface(SkSurface::MakeRasterN32Premul(10, 10));
surface->getCanvas()->clear(SK_ColorGREEN);
sk_sp<SkImage> image(surface->makeImageSnapshot());
SkCanvasMock canvas(10, 10);
{
SkRecord record;
SkRecorder recorder(&record, 10, 10);
recorder.drawImage(image, 0, 0);
SkRecordDraw(record, &canvas, nullptr, nullptr, 0, nullptr, 0);
}
REPORTER_ASSERT(r, canvas.fDrawImageCalled);
canvas.resetTestValues();
{
SkRecord record;
SkRecorder recorder(&record, 10, 10);
recorder.drawImageRect(image, SkRect::MakeWH(10, 10), nullptr);
SkRecordDraw(record, &canvas, nullptr, nullptr, 0, nullptr, 0);
}
REPORTER_ASSERT(r, canvas.fDrawImageRectCalled);
}
void onPerCanvasPreDraw(SkCanvas* canvas) override {
auto ii = SkImageInfo::Make(fImageSize, fImageSize, kRGBA_8888_SkColorType,
kPremul_SkAlphaType, nullptr);
SkRandom random;
for (int i = 0; i < kNumImages; ++i) {
auto surf = canvas->makeSurface(ii);
SkColor color = random.nextU();
surf->getCanvas()->clear(color);
SkPaint paint;
paint.setColor(~color);
paint.setBlendMode(SkBlendMode::kSrc);
surf->getCanvas()->drawRect(SkRect::MakeLTRB(3, 3, fImageSize - 3, fImageSize - 3),
paint);
fImages[i] = surf->makeImageSnapshot();
}
}
// Tests that MIP maps are created and invalidated as expected when drawing to and from GrTextures.
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrTextureMipMapInvalidationTest, reporter, ctxInfo) {
GrContext* context = ctxInfo.grContext();
if (!context->priv().caps()->mipMapSupport()) {
return;
}
auto isMipped = [] (SkSurface* surf) {
const GrTexture* texture = surf->makeImageSnapshot()->getTexture();
return GrMipMapped::kYes == texture->texturePriv().mipMapped();
};
auto mipsAreDirty = [] (SkSurface* surf) {
return surf->makeImageSnapshot()->getTexture()->texturePriv().mipMapsAreDirty();
};
auto info = SkImageInfo::MakeN32Premul(256, 256);
for (auto allocateMips : {false, true}) {
auto surf1 = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info, 0,
kBottomLeft_GrSurfaceOrigin, nullptr,
allocateMips);
auto surf2 = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info);
// Draw something just in case we ever had a solid color optimization
surf1->getCanvas()->drawCircle(128, 128, 50, SkPaint());
surf1->flush();
// No mipmaps initially
REPORTER_ASSERT(reporter, isMipped(surf1.get()) == allocateMips);
// Painting with downscale and medium filter quality should result in mipmap creation
// Flush the context rather than the canvas as flushing the canvas triggers MIP level
// generation.
SkPaint paint;
paint.setFilterQuality(kMedium_SkFilterQuality);
surf2->getCanvas()->scale(0.2f, 0.2f);
surf2->getCanvas()->drawImage(surf1->makeImageSnapshot(), 0, 0, &paint);
context->flush();
REPORTER_ASSERT(reporter, isMipped(surf1.get()) == allocateMips);
REPORTER_ASSERT(reporter, !allocateMips || !mipsAreDirty(surf1.get()));
// Changing the contents of the surface should invalidate the mipmap, but not de-allocate
surf1->getCanvas()->drawCircle(128, 128, 100, SkPaint());
context->flush();
REPORTER_ASSERT(reporter, isMipped(surf1.get()) == allocateMips);
REPORTER_ASSERT(reporter, mipsAreDirty(surf1.get()));
}
}
static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) {
static constexpr SkScalar kSize = 50;
SkImageInfo info = SkImageInfo::MakeN32Premul(kSize, kSize);
auto surface = ToolUtils::makeSurface(rootCanvas, info);
SkPaint p;
p.setAntiAlias(true);
p.setColor(SK_ColorGREEN);
surface->getCanvas()->drawCircle(kSize / 2, kSize / 2, kSize / 2, p);
p.setStyle(SkPaint::kStroke_Style);
p.setColor(SK_ColorRED);
surface->getCanvas()->drawLine(kSize * .25f, kSize * .50f, kSize * .75f, kSize * .50f, p);
surface->getCanvas()->drawLine(kSize * .50f, kSize * .25f, kSize * .50f, kSize * .75f, p);
return surface->makeImageSnapshot();
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReimportImageTextureWithMipLevels, reporter, ctxInfo) {
auto* ctx = ctxInfo.grContext();
if (!ctx->priv().caps()->mipMapSupport()) {
return;
}
static constexpr auto kCreateWithMipMaps = true;
auto surf = SkSurface::MakeRenderTarget(
ctx, SkBudgeted::kYes,
SkImageInfo::Make(100, 100, kRGBA_8888_SkColorType, kPremul_SkAlphaType), 1,
kTopLeft_GrSurfaceOrigin, nullptr, kCreateWithMipMaps);
if (!surf) {
return;
}
surf->getCanvas()->drawColor(SK_ColorDKGRAY);
auto img = surf->makeImageSnapshot();
if (!img) {
return;
}
surf.reset();
GrBackendTexture btex;
SkImage::BackendTextureReleaseProc texRelease;
if (!SkImage::MakeBackendTextureFromSkImage(ctx, std::move(img), &btex, &texRelease)) {
// Not all backends support stealing textures yet.
// ERRORF(reporter, "Could not turn image into texture");
return;
}
REPORTER_ASSERT(reporter, btex.hasMipMaps());
// Reimport the texture as an image and perform a downsampling draw with medium quality which
// should use the upper MIP levels.
img = SkImage::MakeFromTexture(ctx, btex, kTopLeft_GrSurfaceOrigin, kRGBA_8888_SkColorType,
kPremul_SkAlphaType, nullptr);
const auto singlePixelInfo =
SkImageInfo::Make(1, 1, kRGBA_8888_SkColorType, kPremul_SkAlphaType, nullptr);
surf = SkSurface::MakeRenderTarget(ctx, SkBudgeted::kYes, singlePixelInfo, 1,
kTopLeft_GrSurfaceOrigin, nullptr);
SkPaint paint;
paint.setFilterQuality(kMedium_SkFilterQuality);
surf->getCanvas()->drawImageRect(img, SkRect::MakeWH(1, 1), &paint);
uint32_t pixel;
surf->readPixels(singlePixelInfo, &pixel, sizeof(uint32_t), 0, 0);
REPORTER_ASSERT(reporter, pixel == SkPreMultiplyColor(SK_ColorDKGRAY));
img.reset();
texRelease(btex);
}
DEF_TEST(Recorder_drawImage_takeReference, reporter) {
sk_sp<SkImage> image;
{
auto surface(SkSurface::MakeRasterN32Premul(100, 100));
surface->getCanvas()->clear(SK_ColorGREEN);
image = surface->makeImageSnapshot();
}
{
SkRecord record;
SkRecorder recorder(&record, 100, 100);
// DrawImage is supposed to take a reference
recorder.drawImage(image, 0, 0);
REPORTER_ASSERT(reporter, !image->unique());
Tally tally;
tally.apply(record);
REPORTER_ASSERT(reporter, 1 == tally.count<SkRecords::DrawImage>());
}
REPORTER_ASSERT(reporter, image->unique());
{
SkRecord record;
SkRecorder recorder(&record, 100, 100);
// DrawImageRect is supposed to take a reference
recorder.drawImageRect(image, SkRect::MakeWH(100, 100), nullptr);
REPORTER_ASSERT(reporter, !image->unique());
Tally tally;
tally.apply(record);
REPORTER_ASSERT(reporter, 1 == tally.count<SkRecords::DrawImageRect>());
}
REPORTER_ASSERT(reporter, image->unique());
}
static sk_sp<SkImage> MakeAtlas(SkCanvas* caller, const SkRect& target) {
SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
auto surface(caller->makeSurface(info));
if (nullptr == surface) {
surface = SkSurface::MakeRaster(info);
}
SkCanvas* canvas = surface->getCanvas();
// draw red everywhere, but we don't expect to see it in the draw, testing the notion
// that drawAtlas draws a subset-region of the atlas.
canvas->clear(SK_ColorRED);
SkPaint paint;
paint.setBlendMode(SkBlendMode::kClear);
SkRect r(target);
r.inset(-1, -1);
// zero out a place (with a 1-pixel border) to land our drawing.
canvas->drawRect(r, paint);
paint.setBlendMode(SkBlendMode::kSrcOver);
paint.setColor(SK_ColorBLUE);
paint.setAntiAlias(true);
canvas->drawOval(target, paint);
return surface->makeImageSnapshot();
}
// Tests that MIP maps are created and invalidated as expected when drawing to and from GrTextures.
DEF_GPUTEST_FOR_NULLGL_CONTEXT(GrTextureMipMapInvalidationTest, reporter, ctxInfo) {
auto isMipped = [] (SkSurface* surf) {
const GrTexture* texture = surf->makeImageSnapshot()->getTexture();
return GrMipMapped::kYes == texture->texturePriv().mipMapped();
};
auto mipsAreDirty = [] (SkSurface* surf) {
return surf->makeImageSnapshot()->getTexture()->texturePriv().mipMapsAreDirty();
};
GrContext* context = ctxInfo.grContext();
auto info = SkImageInfo::MakeN32Premul(256, 256);
auto surf1 = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info);
auto surf2 = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info);
// Draw something just in case we ever had a solid color optimization
surf1->getCanvas()->drawCircle(128, 128, 50, SkPaint());
surf1->getCanvas()->flush();
// No mipmaps initially
REPORTER_ASSERT(reporter, !isMipped(surf1.get()));
// Painting with downscale and medium filter quality should result in mipmap creation
SkPaint paint;
paint.setFilterQuality(kMedium_SkFilterQuality);
surf2->getCanvas()->scale(0.2f, 0.2f);
surf2->getCanvas()->drawImage(surf1->makeImageSnapshot(), 0, 0, &paint);
surf2->getCanvas()->flush();
REPORTER_ASSERT(reporter, isMipped(surf1.get()));
REPORTER_ASSERT(reporter, !mipsAreDirty(surf1.get()));
// Changing the contents of the surface should invalidate the mipmap, but not de-allocate
surf1->getCanvas()->drawCircle(128, 128, 100, SkPaint());
surf1->getCanvas()->flush();
REPORTER_ASSERT(reporter, isMipped(surf1.get()));
REPORTER_ASSERT(reporter, mipsAreDirty(surf1.get()));
}
static void draw_zero_length_capped_paths_dbl_contour(SkCanvas* canvas, bool aa) {
canvas->translate(kCellPad, kCellPad);
SkImageInfo info = canvas->imageInfo().makeWH(kCellWidth, kCellHeight);
auto surface = canvas->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRasterN32Premul(kCellWidth, kCellHeight);
}
SkPaint paint;
paint.setColor(SK_ColorWHITE);
paint.setAntiAlias(aa);
paint.setStyle(SkPaint::kStroke_Style);
int numFailedTests = 0;
for (auto cap : kCaps) {
for (auto width : kWidths) {
paint.setStrokeCap(cap);
paint.setStrokeWidth(width);
canvas->save();
for (auto firstVerb : kSomeVerbs) {
for (auto secondVerb : kSomeVerbs) {
int expectedCaps = 0;
SkString pathStr;
pathStr.append("M 9.5 9.5 ");
if (firstVerb) {
pathStr.append(firstVerb);
++expectedCaps;
}
pathStr.append("M 40.5 9.5 ");
if (secondVerb) {
pathStr.append(secondVerb);
++expectedCaps;
}
SkPath path;
SkParsePath::FromSVGString(pathStr.c_str(), &path);
surface->getCanvas()->clear(SK_ColorTRANSPARENT);
surface->getCanvas()->drawPath(path, paint);
auto img = surface->makeImageSnapshot();
if (SkPaint::kButt_Cap == cap) {
expectedCaps = 0;
}
if (!draw_path_cell(canvas, img.get(), expectedCaps)) {
++numFailedTests;
}
canvas->translate(kCellWidth + kCellPad, 0);
}
}
canvas->restore();
canvas->translate(0, kCellHeight + kCellPad);
}
}
canvas->drawColor(numFailedTests > 0 ? kFailureRed : kSuccessGreen);
}
static sk_sp<SkImage> picture_to_image(sk_sp<SkPicture> pic) {
SkIRect r = pic->cullRect().round();
auto surf = SkSurface::MakeRasterN32Premul(r.width(), r.height());
surf->getCanvas()->drawPicture(pic);
return surf->makeImageSnapshot();
}
static sk_sp<SkImage> makebm(SkCanvas* origCanvas, SkBitmap* resultBM, int w, int h) {
SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
auto surface(origCanvas->makeSurface(info));
if (nullptr == surface) {
// picture canvas will return null, so fall-back to raster
surface = SkSurface::MakeRaster(info);
}
SkCanvas* canvas = surface->getCanvas();
canvas->clear(SK_ColorTRANSPARENT);
SkScalar wScalar = SkIntToScalar(w);
SkScalar hScalar = SkIntToScalar(h);
SkPoint pt = { wScalar / 2, hScalar / 2 };
SkScalar radius = 4 * SkMaxScalar(wScalar, hScalar);
SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW,
SK_ColorGREEN, SK_ColorMAGENTA,
SK_ColorBLUE, SK_ColorCYAN,
SK_ColorRED};
SkScalar pos[] = {0,
SK_Scalar1 / 6,
2 * SK_Scalar1 / 6,
3 * SK_Scalar1 / 6,
4 * SK_Scalar1 / 6,
5 * SK_Scalar1 / 6,
SK_Scalar1};
SkPaint paint;
SkRect rect = SkRect::MakeWH(wScalar, hScalar);
SkMatrix mat = SkMatrix::I();
for (int i = 0; i < 4; ++i) {
paint.setShader(SkGradientShader::MakeRadial(
pt, radius,
colors, pos,
SK_ARRAY_COUNT(colors),
SkShader::kRepeat_TileMode,
0, &mat));
canvas->drawRect(rect, paint);
rect.inset(wScalar / 8, hScalar / 8);
mat.postScale(SK_Scalar1 / 4, SK_Scalar1 / 4);
}
auto image = surface->makeImageSnapshot();
SkBitmap tempBM;
#if SK_SUPPORT_GPU
if (GrTexture* texture = as_IB(image)->peekTexture()) {
GrWrapTextureInBitmap(texture, image->width(), image->height(), image->isOpaque(), &tempBM);
} else
#endif
{
image->asLegacyBitmap(&tempBM, SkImage::kRO_LegacyBitmapMode);
}
// Let backends know we won't change this, so they don't have to deep copy it defensively.
tempBM.setImmutable();
*resultBM = tempBM;
return image;
}
void onDraw(SkCanvas* canvas) override{
SkPaint blackFill;
//-----------
// Normal paints (no source)
SkTArray<SkPaint> paints;
create_paints(nullptr, &paints);
//-----------
// Paints with a PictureImageFilter as a source
sk_sp<SkPicture> pic;
{
SkPictureRecorder rec;
SkCanvas* c = rec.beginRecording(10, 10);
c->drawRect(SkRect::MakeWH(10, 10), blackFill);
pic = rec.finishRecordingAsPicture();
}
SkAutoTUnref<SkImageFilter> pif(SkPictureImageFilter::Create(pic.get()));
SkTArray<SkPaint> pifPaints;
create_paints(pif, &pifPaints);
//-----------
// Paints with a SkImageSource as a source
auto surface(SkSurface::MakeRasterN32Premul(10, 10));
{
SkPaint p;
SkCanvas* temp = surface->getCanvas();
temp->clear(SK_ColorYELLOW);
p.setColor(SK_ColorBLUE);
temp->drawRect(SkRect::MakeLTRB(5, 5, 10, 10), p);
p.setColor(SK_ColorGREEN);
temp->drawRect(SkRect::MakeLTRB(5, 0, 10, 5), p);
}
sk_sp<SkImage> image(surface->makeImageSnapshot());
SkAutoTUnref<SkImageFilter> imageSource(SkImageSource::Create(image.get()));
SkTArray<SkPaint> bmsPaints;
create_paints(imageSource, &bmsPaints);
//-----------
SkASSERT(paints.count() == kNumVertTiles);
SkASSERT(paints.count() == pifPaints.count());
SkASSERT(paints.count() == bmsPaints.count());
// horizontal separators
for (int i = 1; i < paints.count(); ++i) {
canvas->drawLine(0,
i*SkIntToScalar(kTileHeight),
SkIntToScalar((SK_ARRAY_COUNT(gDrawMthds) + kNumXtraCols)*kTileWidth),
i*SkIntToScalar(kTileHeight),
blackFill);
}
// vertical separators
for (int i = 0; i < (int)SK_ARRAY_COUNT(gDrawMthds) + kNumXtraCols; ++i) {
canvas->drawLine(SkIntToScalar(i * kTileWidth),
0,
SkIntToScalar(i * kTileWidth),
SkIntToScalar(paints.count() * kTileWidth),
blackFill);
}
// A column of saveLayers with PictureImageFilters
for (int i = 0; i < pifPaints.count(); ++i) {
draw_savelayer_with_paint(SkIPoint::Make(0, i*kTileHeight),
canvas, pifPaints[i]);
}
// A column of saveLayers with BitmapSources
for (int i = 0; i < pifPaints.count(); ++i) {
draw_savelayer_with_paint(SkIPoint::Make(kTileWidth, i*kTileHeight),
canvas, bmsPaints[i]);
}
// Multiple columns with different geometry
for (int i = 0; i < (int)SK_ARRAY_COUNT(gDrawMthds); ++i) {
for (int j = 0; j < paints.count(); ++j) {
draw_geom_with_paint(*gDrawMthds[i],
SkIPoint::Make((i+kNumXtraCols) * kTileWidth, j*kTileHeight),
canvas, paints[j]);
}
}
}
virtual void onDraw(SkCanvas* inputCanvas) override {
SkScalar textSizes[] = { 9.0f, 9.0f*2.0f, 9.0f*5.0f, 9.0f*2.0f*5.0f };
SkScalar scales[] = { 2.0f*5.0f, 5.0f, 2.0f, 1.0f };
// set up offscreen rendering with distance field text
GrContext* ctx = inputCanvas->getGrContext();
SkISize size = onISize();
SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), kPremul_SkAlphaType,
inputCanvas->imageInfo().refColorSpace());
SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag,
SkSurfaceProps::kLegacyFontHost_InitType);
auto surface(SkSurface::MakeRenderTarget(ctx, SkBudgeted::kNo, info, 0, &props));
SkCanvas* canvas = surface ? surface->getCanvas() : inputCanvas;
// init our new canvas with the old canvas's matrix
canvas->setMatrix(inputCanvas->getTotalMatrix());
// apply global scale to test glyph positioning
canvas->scale(1.05f, 1.05f);
canvas->clear(0xffffffff);
SkPaint paint;
paint.setAntiAlias(true);
SkFont font(ToolUtils::create_portable_typeface("serif", SkFontStyle()));
font.setSubpixel(true);
const char* text = "Hamburgefons";
const size_t textLen = strlen(text);
// check scaling up
SkScalar x = SkIntToScalar(0);
SkScalar y = SkIntToScalar(78);
for (size_t i = 0; i < SK_ARRAY_COUNT(textSizes); ++i) {
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(x, y);
canvas->scale(scales[i], scales[i]);
font.setSize(textSizes[i]);
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, 0, 0, font, paint);
y += font.getMetrics(nullptr)*scales[i];
}
// check rotation
for (size_t i = 0; i < 5; ++i) {
SkScalar rotX = SkIntToScalar(10);
SkScalar rotY = y;
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(SkIntToScalar(10 + i * 200), -80);
canvas->rotate(SkIntToScalar(i * 5), rotX, rotY);
for (int ps = 6; ps <= 32; ps += 3) {
font.setSize(SkIntToScalar(ps));
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, rotX, rotY, font, paint);
rotY += font.getMetrics(nullptr);
}
}
// check scaling down
font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
x = SkIntToScalar(680);
y = SkIntToScalar(20);
size_t arraySize = SK_ARRAY_COUNT(textSizes);
for (size_t i = 0; i < arraySize; ++i) {
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(x, y);
SkScalar scaleFactor = SkScalarInvert(scales[arraySize - i - 1]);
canvas->scale(scaleFactor, scaleFactor);
font.setSize(textSizes[i]);
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, 0, 0, font, paint);
y += font.getMetrics(nullptr)*scaleFactor;
}
// check pos text
{
SkAutoCanvasRestore acr(canvas, true);
canvas->scale(2.0f, 2.0f);
SkAutoTArray<SkGlyphID> glyphs(SkToInt(textLen));
int count = font.textToGlyphs(text, textLen, SkTextEncoding::kUTF8, glyphs.get(), textLen);
SkAutoTArray<SkPoint> pos(count);
font.setSize(textSizes[0]);
font.getPos(glyphs.get(), count, pos.get(), {340, 75});
auto blob = SkTextBlob::MakeFromPosText(glyphs.get(), count * sizeof(SkGlyphID),
pos.get(), font, SkTextEncoding::kGlyphID);
canvas->drawTextBlob(blob, 0, 0, paint);
}
// check gamma-corrected blending
const SkColor fg[] = {
0xFFFFFFFF,
0xFFFFFF00, 0xFFFF00FF, 0xFF00FFFF,
0xFFFF0000, 0xFF00FF00, 0xFF0000FF,
0xFF000000,
};
paint.setColor(0xFFF7F3F7);
SkRect r = SkRect::MakeLTRB(670, 215, 820, 397);
canvas->drawRect(r, paint);
x = SkIntToScalar(680);
y = SkIntToScalar(235);
font.setSize(SkIntToScalar(19));
for (size_t i = 0; i < SK_ARRAY_COUNT(fg); ++i) {
paint.setColor(fg[i]);
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, x, y, font, paint);
y += font.getMetrics(nullptr);
}
paint.setColor(0xFF181C18);
r = SkRect::MakeLTRB(820, 215, 970, 397);
canvas->drawRect(r, paint);
x = SkIntToScalar(830);
y = SkIntToScalar(235);
font.setSize(SkIntToScalar(19));
for (size_t i = 0; i < SK_ARRAY_COUNT(fg); ++i) {
paint.setColor(fg[i]);
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, x, y, font, paint);
y += font.getMetrics(nullptr);
}
// check skew
{
font.setEdging(SkFont::Edging::kAntiAlias);
SkAutoCanvasRestore acr(canvas, true);
canvas->skew(0.0f, 0.151515f);
font.setSize(SkIntToScalar(32));
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, 745, 70, font, paint);
}
{
font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
SkAutoCanvasRestore acr(canvas, true);
canvas->skew(0.5f, 0.0f);
font.setSize(SkIntToScalar(32));
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, 580, 125, font, paint);
}
// check perspective
{
font.setEdging(SkFont::Edging::kAntiAlias);
SkAutoCanvasRestore acr(canvas, true);
SkMatrix persp;
persp.setAll(0.9839f, 0, 0,
0.2246f, 0.6829f, 0,
0.0002352f, -0.0003844f, 1);
canvas->concat(persp);
canvas->translate(1100, -295);
font.setSize(37.5f);
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, 0, 0, font, paint);
}
{
font.setSubpixel(false);
font.setEdging(SkFont::Edging::kAlias);
SkAutoCanvasRestore acr(canvas, true);
SkMatrix persp;
persp.setAll(0.9839f, 0, 0,
0.2246f, 0.6829f, 0,
0.0002352f, -0.0003844f, 1);
canvas->concat(persp);
canvas->translate(1075, -245);
canvas->scale(375, 375);
font.setSize(0.1f);
canvas->drawSimpleText(text, textLen, SkTextEncoding::kUTF8, 0, 0, font, paint);
}
// check color emoji
if (fEmojiTypeface) {
SkFont emoiFont;
emoiFont.setSubpixel(true);
emoiFont.setTypeface(fEmojiTypeface);
emoiFont.setSize(SkIntToScalar(19));
canvas->drawSimpleText(fEmojiText, strlen(fEmojiText), SkTextEncoding::kUTF8, 670, 90, emoiFont, paint);
}
// render offscreen buffer
if (surface) {
SkAutoCanvasRestore acr(inputCanvas, true);
// since we prepended this matrix already, we blit using identity
inputCanvas->resetMatrix();
inputCanvas->drawImage(surface->makeImageSnapshot().get(), 0, 0, nullptr);
}
}
void SetImageShader(SkPaint* paint, int imageWidth, int imageHeight, SkShader::TileMode xTile,
SkShader::TileMode yTile) {
auto surface = SkSurface::MakeRasterN32Premul(imageWidth, imageHeight);
paint->setShader(SkImageShader::Make(surface->makeImageSnapshot(), xTile, yTile, nullptr));
}