skiagm::OvalGM Class Reference

Inheritance diagram for skiagm::OvalGM:

Public Member Functions
	OvalGM ()
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 SkISize	getISize ()=0
virtual SkString	getName () const =0
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
SkString	getName () const override
SkISize	getISize () override
void	makePaints ()
void	makeMatrices ()
SkColor	genColor (SkRandom *rand)
void	onDraw (SkCanvas *canvas) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual void	onOnceBeforeDraw ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual void	onDraw (SkCanvas *)
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 32 of file ovals.cpp.

Constructor & Destructor Documentation

OvalGM()

skiagm::OvalGM::OvalGM ( )

inline

Definition at line 34 of file ovals.cpp.

             {
        this->setBGColor(0xFF000000);
        this->makePaints();
        this->makeMatrices();
    }

Member Function Documentation

genColor()

SkColor skiagm::OvalGM::genColor ( SkRandom *  rand )

inlineprotected

Definition at line 136 of file ovals.cpp.

                                     {
        SkScalar hsv[3];
        hsv[0] = rand->nextRangeF(0.0f, 360.0f);
        hsv[1] = rand->nextRangeF(0.75f, 1.0f);
        hsv[2] = rand->nextRangeF(0.75f, 1.0f);
 
        return ToolUtils::color_to_565(SkHSVToColor(hsv));
    }

getISize()

SkISize skiagm::OvalGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 43 of file ovals.cpp.

{ return SkISize::Make(1200, 900); }

getName()

SkString skiagm::OvalGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 41 of file ovals.cpp.

{ return SkString("ovals"); }

makeMatrices()

void skiagm::OvalGM::makeMatrices ( )

inlineprotected

Definition at line 86 of file ovals.cpp.

                        {
        {
        SkMatrix m;
        m.setIdentity();
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setScale(SkIntToScalar(3), SkIntToScalar(2));
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setScale(SkIntToScalar(2), SkIntToScalar(2));
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setScale(SkIntToScalar(1), SkIntToScalar(2));
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setScale(SkIntToScalar(4), SkIntToScalar(1));
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setRotate(SkIntToScalar(90));
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setSkew(SkIntToScalar(2), SkIntToScalar(3));
        fMatrices.push_back(m);
        }
 
        {
        SkMatrix m;
        m.setRotate(SkIntToScalar(60));
        fMatrices.push_back(m);
        }
    }

makePaints()

void skiagm::OvalGM::makePaints ( )

inlineprotected

Definition at line 45 of file ovals.cpp.

                      {
        {
        // no AA
        SkPaint p;
        fPaints.push_back(p);
        }
 
        {
        // AA
        SkPaint p;
        p.setAntiAlias(true);
        fPaints.push_back(p);
        }
 
        {
        // AA with stroke style
        SkPaint p;
        p.setAntiAlias(true);
        p.setStyle(SkPaint::kStroke_Style);
        p.setStrokeWidth(SkIntToScalar(5));
        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(3));
        fPaints.push_back(p);
        }
    }

onDraw()

void skiagm::OvalGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 145 of file ovals.cpp.

                                           {
        SkRandom rand(1);
        canvas->translate(20 * SK_Scalar1, 20 * SK_Scalar1);
        const SkRect kOval = SkRect::MakeLTRB(-20, -30, 20, 30);
 
        const SkScalar kXStart = 60.0f;
        const SkScalar kYStart = 80.0f;
        const int kXStep = 150;
        const int kYStep = 160;
        int maxX = fMatrices.size();
 
        SkPaint rectPaint;
        rectPaint.setAntiAlias(true);
        rectPaint.setStyle(SkPaint::kStroke_Style);
        rectPaint.setStrokeWidth(SkIntToScalar(0));
        rectPaint.setColor(SK_ColorLTGRAY);
 
        int testCount = 0;
        for (int i = 0; i < fPaints.size(); ++i) {
            for (int j = 0; j < fMatrices.size(); ++j) {
                canvas->save();
                SkMatrix mat = fMatrices[j];
                // position the oval, and make it at off-integer coords.
                mat.postTranslate(kXStart + SK_Scalar1 * kXStep * (testCount % maxX) +
                                  SK_Scalar1 / 4,
                                  kYStart + SK_Scalar1 * kYStep * (testCount / maxX) +
                                  3 * SK_Scalar1 / 4);
                canvas->concat(mat);
 
                SkColor color = genColor(&rand);
                fPaints[i].setColor(color);
 
                canvas->drawRect(kOval, rectPaint);
                canvas->drawOval(kOval, fPaints[i]);
 
                canvas->restore();
 
                ++testCount;
            }
        }
 
        // special cases
 
        // non-scaled tall and skinny oval
        for (int i = 0; i < fPaints.size(); ++i) {
            SkRect oval = SkRect::MakeLTRB(-20, -60, 20, 60);
            canvas->save();
            // position the oval, and make it at off-integer coords.
            canvas->translate(kXStart + SK_Scalar1 * kXStep * 2.55f + SK_Scalar1 / 4,
                              kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4);
 
            SkColor color = genColor(&rand);
            fPaints[i].setColor(color);
 
            canvas->drawRect(oval, rectPaint);
            canvas->drawOval(oval, fPaints[i]);
            canvas->restore();
        }
 
        // non-scaled wide and short oval
        for (int i = 0; i < fPaints.size(); ++i) {
            SkRect oval = SkRect::MakeLTRB(-80, -30, 80, 30);
            canvas->save();
            // position the oval, and make it at off-integer coords.
            canvas->translate(kXStart + SK_Scalar1 * kXStep * 4 + SK_Scalar1 / 4,
                              kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 +
                              SK_ScalarHalf * kYStep);
 
            SkColor color = genColor(&rand);
            fPaints[i].setColor(color);
 
            canvas->drawRect(oval, rectPaint);
            canvas->drawOval(oval, fPaints[i]);
            canvas->restore();
        }
 
        // super skinny oval
        for (int i = 0; i < fPaints.size(); ++i) {
            SkRect oval = SkRect::MakeLTRB(0, -60, 1, 60);
            canvas->save();
            // position the oval, and make it at off-integer coords.
            canvas->translate(kXStart + SK_Scalar1 * kXStep * 3.25f + SK_Scalar1 / 4,
                              kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4);
 
            SkColor color = genColor(&rand);
            fPaints[i].setColor(color);
 
            canvas->drawOval(oval, fPaints[i]);
            canvas->restore();
        }
 
        // super short oval
        for (int i = 0; i < fPaints.size(); ++i) {
            SkRect oval = SkRect::MakeLTRB(-80, -1, 80, 0);
            canvas->save();
            // position the oval, and make it at off-integer coords.
            canvas->translate(kXStart + SK_Scalar1 * kXStep * 2.5f + SK_Scalar1 / 4,
                              kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 +
                              SK_ScalarHalf * kYStep);
 
            SkColor color = genColor(&rand);
            fPaints[i].setColor(color);
 
            canvas->drawOval(oval, fPaints[i]);
            canvas->restore();
        }
 
        // radial gradient
        SkPoint center = SkPoint::Make(SkIntToScalar(0), SkIntToScalar(0));
        SkColor colors[] = { SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN };
        SkScalar pos[] = { 0, SK_ScalarHalf, SK_Scalar1 };
        auto shader = SkGradientShader::MakeRadial(center, 20, colors, pos, std::size(colors),
                                                   SkTileMode::kClamp);
 
        for (int i = 0; i < fPaints.size(); ++i) {
            canvas->save();
            // position the path, and make it at off-integer coords.
            canvas->translate(kXStart + SK_Scalar1 * kXStep * 0 + SK_Scalar1 / 4,
                              kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 +
                              SK_ScalarHalf * kYStep);
 
            SkColor color = genColor(&rand);
            fPaints[i].setColor(color);
            fPaints[i].setShader(shader);
 
            canvas->drawRect(kOval, rectPaint);
            canvas->drawOval(kOval, fPaints[i]);
 
            fPaints[i].setShader(nullptr);
 
            canvas->restore();
        }
 
        // reflected oval
        for (int i = 0; i < fPaints.size(); ++i) {
            SkRect oval = SkRect::MakeLTRB(-30, -30, 30, 30);
            canvas->save();
            // position the oval, and make it at off-integer coords.
            canvas->translate(kXStart + SK_Scalar1 * kXStep * 5 + SK_Scalar1 / 4,
                              kYStart + SK_Scalar1 * kYStep * i + 3 * SK_Scalar1 / 4 +
                              SK_ScalarHalf * kYStep);
            canvas->rotate(90);
            canvas->scale(1, -1);
            canvas->scale(1, 0.66f);
 
            SkColor color = genColor(&rand);
            fPaints[i].setColor(color);
 
            canvas->drawRect(oval, rectPaint);
            canvas->drawOval(oval, fPaints[i]);
            canvas->restore();
        }
    }

---

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

• third_party/skia/gm/ovals.cpp