skiagm::TextBlobMixedSizes Class Reference

Inheritance diagram for skiagm::TextBlobMixedSizes:

Public Member Functions
	TextBlobMixedSizes (bool useDFT)
Public Member Functions inherited from skiagm::GM
	GM (SkColor backgroundColor=SK_ColorWHITE)
virtual	~GM ()
void	setMode (Mode mode)
Mode	getMode () const
DrawResult	gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
void	gpuTeardown ()
void	onceBeforeDraw ()
DrawResult	draw (SkCanvas *canvas)
DrawResult	draw (SkCanvas *, SkString *errorMsg)
void	drawBackground (SkCanvas *)
DrawResult	drawContent (SkCanvas *canvas)
DrawResult	drawContent (SkCanvas *, SkString *errorMsg)
virtual bool	runAsBench () const
SkScalar	width ()
SkScalar	height ()
SkColor	getBGColor () const
void	setBGColor (SkColor)
void	drawSizeBounds (SkCanvas *, SkColor)
bool	animate (double)
virtual bool	onChar (SkUnichar)
bool	getControls (SkMetaData *controls)
void	setControls (const SkMetaData &controls)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual void	modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
virtual bool	isBazelOnly () const
virtual std::map< std::string, std::string >	getGoldKeys () const

Protected Member Functions
void	onOnceBeforeDraw () override
SkString	getName () const override
SkISize	getISize () override
void	onDraw (SkCanvas *inputCanvas) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Additional Inherited Members
Public Types inherited from skiagm::GM
enum	Mode { kGM_Mode , kSample_Mode , kBench_Mode }
using	DrawResult = skiagm::DrawResult
using	GraphiteTestContext = skiatest::graphite::GraphiteTestContext
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []

Detailed Description

Definition at line 39 of file textblobmixedsizes.cpp.

Constructor & Destructor Documentation

TextBlobMixedSizes()

skiagm::TextBlobMixedSizes::TextBlobMixedSizes ( bool  useDFT )

inline

Definition at line 42 of file textblobmixedsizes.cpp.

: fUseDFT(useDFT) {}

Member Function Documentation

getISize()

SkISize skiagm::TextBlobMixedSizes::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 106 of file textblobmixedsizes.cpp.

{ return SkISize::Make(kWidth, kHeight); }

getName()

SkString skiagm::TextBlobMixedSizes::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 101 of file textblobmixedsizes.cpp.

                                      {
        return SkStringPrintf("textblobmixedsizes%s",
                              fUseDFT ? "_df" : "");
    }

onDraw()

void skiagm::TextBlobMixedSizes::onDraw ( SkCanvas *  inputCanvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 108 of file textblobmixedsizes.cpp.

                                                {
        SkCanvas* canvas = inputCanvas;
        sk_sp<SkSurface> surface;
        if (fUseDFT) {
            // Create a new Canvas to enable DFT
            auto ctx = inputCanvas->recordingContext();
            SkISize size = getISize();
            sk_sp<SkColorSpace> colorSpace = inputCanvas->imageInfo().refColorSpace();
            SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(),
                                                    kPremul_SkAlphaType, colorSpace);
            SkSurfaceProps inputProps;
            inputCanvas->getProps(&inputProps);
            SkSurfaceProps props(
                    SkSurfaceProps::kUseDeviceIndependentFonts_Flag | inputProps.flags(),
                    inputProps.pixelGeometry());
            surface = SkSurfaces::RenderTarget(ctx, skgpu::Budgeted::kNo, info, 0, &props);
            canvas = surface ? surface->getCanvas() : inputCanvas;
            // init our new canvas with the old canvas's matrix
            canvas->setMatrix(inputCanvas->getTotalMatrix());
        }
        canvas->drawColor(SK_ColorWHITE);
 
        SkRect bounds = fBlob->bounds();
 
        const int kPadX = SkScalarFloorToInt(bounds.width() / 3);
        const int kPadY = SkScalarFloorToInt(bounds.height() / 3);
 
        int rowCount = 0;
        canvas->translate(SkIntToScalar(kPadX), SkIntToScalar(kPadY));
        canvas->save();
        SkRandom random;
 
        SkPaint paint;
        if (!fUseDFT) {
            paint.setColor(SK_ColorWHITE);
        }
        paint.setAntiAlias(false);
 
        const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(8));
 
        // setup blur paint
        SkPaint blurPaint(paint);
        blurPaint.setColor(SK_ColorBLACK);
        blurPaint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, kSigma));
 
        for (int i = 0; i < 4; i++) {
            canvas->save();
            switch (i % 2) {
                case 0:
                    canvas->rotate(random.nextF() * 45.f);
                    break;
                case 1:
                    canvas->rotate(-random.nextF() * 45.f);
                    break;
            }
            if (!fUseDFT) {
                canvas->drawTextBlob(fBlob, 0, 0, blurPaint);
            }
            canvas->drawTextBlob(fBlob, 0, 0, paint);
            canvas->restore();
            canvas->translate(bounds.width() + SK_Scalar1 * kPadX, 0);
            ++rowCount;
            if ((bounds.width() + 2 * kPadX) * rowCount > kWidth) {
                canvas->restore();
                canvas->translate(0, bounds.height() + SK_Scalar1 * kPadY);
                canvas->save();
                rowCount = 0;
            }
        }
        canvas->restore();
 
        // 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);
        }
    }

onOnceBeforeDraw()

void skiagm::TextBlobMixedSizes::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 45 of file textblobmixedsizes.cpp.

                                     {
        SkTextBlobBuilder builder;
 
        // make textblob.  To stress distance fields, we choose sizes appropriately
        sk_sp<SkTypeface> tf = ToolUtils::CreateTypefaceFromResource("fonts/HangingS.ttf");
        if (!tf) {
            tf = ToolUtils::DefaultPortableTypeface();
        }
        SkFont font(tf, 262);
        font.setSubpixel(true);
        font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
 
        const char* text = "Skia";
 
        ToolUtils::add_to_text_blob(&builder, text, font, 0, 0);
 
        // large
        SkRect bounds;
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        SkScalar yOffset = bounds.height();
        font.setSize(162);
 
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset);
 
        // Medium
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        yOffset += bounds.height();
        font.setSize(72);
 
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset);
 
        // Small
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        yOffset += bounds.height();
        font.setSize(32);
 
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset);
 
        // micro (will fall out of distance field text even if distance field text is enabled)
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        yOffset += bounds.height();
        font.setSize(14);
 
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset);
 
        // Zero size.
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        yOffset += bounds.height();
        font.setSize(0);
 
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset);
 
        // build
        fBlob = builder.make();
    }

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The documentation for this class was generated from the following file:

• third_party/skia/gm/textblobmixedsizes.cpp