skiagm::DrawImageSetGM Class Reference

Inheritance diagram for skiagm::DrawImageSetGM:

Private Member Functions
SkString	getName () const override
SkISize	getISize () override
void	onOnceBeforeDraw () override
void	onDraw (SkCanvas *canvas) override

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
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
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []
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

Detailed Description

Definition at line 108 of file drawimageset.cpp.

Member Function Documentation

getISize()

SkISize skiagm::DrawImageSetGM::getISize ( )

inlineoverrideprivatevirtual

Implements skiagm::GM.

Definition at line 111 of file drawimageset.cpp.

{ return {1000, 725}; }

getName()

SkString skiagm::DrawImageSetGM::getName ( ) const

inlineoverrideprivatevirtual

Implements skiagm::GM.

Definition at line 110 of file drawimageset.cpp.

{ return SkString("draw_image_set"); }

onDraw()

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

inlineoverrideprivatevirtual

Reimplemented from skiagm::GM.

Definition at line 118 of file drawimageset.cpp.

                                           {
        SkScalar d = SkVector{kM * kTileW, kN * kTileH}.length();
        SkMatrix matrices[4];
        // rotation
        matrices[0].setRotate(30);
        matrices[0].postTranslate(d / 3, 0);
        // perespective
        SkPoint src[4];
        SkRect::MakeWH(kM * kTileW, kN * kTileH).toQuad(src);
        SkPoint dst[4] = {{0, 0},
                          {kM * kTileW + 10.f, -5.f},
                          {kM * kTileW - 28.f, kN * kTileH + 40.f},
                          {45.f, kN * kTileH - 25.f}};
        SkAssertResult(matrices[1].setPolyToPoly(src, dst, 4));
        matrices[1].postTranslate(d, 50.f);
        // skew
        matrices[2].setRotate(-60.f);
        matrices[2].postSkew(0.5f, -1.15f);
        matrices[2].postScale(0.6f, 1.05f);
        matrices[2].postTranslate(d, 2.6f * d);
        // perspective + mirror in x.
        dst[1] = {-.25 * kM * kTileW, 0};
        dst[0] = {5.f / 4.f * kM * kTileW, 0};
        dst[3] = {2.f / 3.f * kM * kTileW, 1 / 2.f * kN * kTileH};
        dst[2] = {1.f / 3.f * kM * kTileW, 1 / 2.f * kN * kTileH - 0.1f * kTileH};
        SkAssertResult(matrices[3].setPolyToPoly(src, dst, 4));
        matrices[3].postTranslate(100.f, d);
        for (auto fm : {SkFilterMode::kNearest, SkFilterMode::kLinear}) {
            SkPaint setPaint;
            setPaint.setBlendMode(SkBlendMode::kSrcOver);
            SkSamplingOptions sampling(fm);
 
            for (size_t m = 0; m < std::size(matrices); ++m) {
                // Draw grid of red lines at interior tile boundaries.
                static constexpr SkScalar kLineOutset = 10.f;
                SkPaint paint;
                paint.setAntiAlias(true);
                paint.setColor(SK_ColorRED);
                paint.setStyle(SkPaint::kStroke_Style);
                paint.setStrokeWidth(0.f);
                for (int x = 1; x < kM; ++x) {
                    SkPoint pts[] = {{x * kTileW, 0}, {x * kTileW, kN * kTileH}};
                    matrices[m].mapPoints(pts, 2);
                    SkVector v = pts[1] - pts[0];
                    v.setLength(v.length() + kLineOutset);
                    canvas->drawLine(pts[1] - v, pts[0] + v, paint);
                }
                for (int y = 1; y < kN; ++y) {
                    SkPoint pts[] = {{0, y * kTileH}, {kTileW * kM, y * kTileH}};
                    matrices[m].mapPoints(pts, 2);
                    SkVector v = pts[1] - pts[0];
                    v.setLength(v.length() + kLineOutset);
                    canvas->drawLine(pts[1] - v, pts[0] + v, paint);
                }
                canvas->save();
                canvas->concat(matrices[m]);
                canvas->experimental_DrawEdgeAAImageSet(fSet, kM * kN, nullptr, nullptr, sampling,
                                                        &setPaint,
                                                        SkCanvas::kFast_SrcRectConstraint);
                canvas->restore();
            }
            // A more exotic case with an unusual blend mode, mixed aa flags set, and alpha,
            // subsets the image. And another with all the above plus a color filter.
            SkCanvas::ImageSetEntry entry;
            entry.fSrcRect = SkRect::MakeWH(kTileW, kTileH).makeInset(kTileW / 4.f, kTileH / 4.f);
            entry.fDstRect = SkRect::MakeWH(1.5 * kTileW, 1.5 * kTileH).makeOffset(d / 4, 2 * d);
            entry.fImage = fSet[0].fImage;
            entry.fAlpha = 0.7f;
            entry.fAAFlags = SkCanvas::kLeft_QuadAAFlag | SkCanvas::kTop_QuadAAFlag;
            canvas->save();
            canvas->rotate(3.f);
 
            setPaint.setBlendMode(SkBlendMode::kExclusion);
            canvas->experimental_DrawEdgeAAImageSet(&entry, 1, nullptr, nullptr, sampling,
                                                    &setPaint, SkCanvas::kFast_SrcRectConstraint);
            canvas->translate(entry.fDstRect.width() + 8.f, 0);
            SkPaint cfPaint = setPaint;
            cfPaint.setColorFilter(SkColorFilters::LinearToSRGBGamma());
            canvas->experimental_DrawEdgeAAImageSet(&entry, 1, nullptr, nullptr, sampling,
                                                    &cfPaint, SkCanvas::kFast_SrcRectConstraint);
            canvas->restore();
            canvas->translate(2 * d, 0);
        }
    }

onOnceBeforeDraw()

void skiagm::DrawImageSetGM::onOnceBeforeDraw ( )

inlineoverrideprivatevirtual

Reimplemented from skiagm::GM.

Definition at line 112 of file drawimageset.cpp.

                                     {
        static constexpr SkColor kColors[] = {SK_ColorCYAN,    SK_ColorBLACK,
                                              SK_ColorMAGENTA, SK_ColorBLACK};
        make_image_tiles(kTileW, kTileH, kM, kN, kColors, fSet);
    }

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

• third_party/skia/gm/drawimageset.cpp