ColorMatrixGM Class Reference

Inheritance diagram for ColorMatrixGM:

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

Static Protected Member Functions
static sk_sp< SkImage >	CreateSolidBitmap (int width, int height)
static sk_sp< SkImage >	CreateTransparentBitmap (int width, int height)

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 colormatrix.cpp.

Constructor & Destructor Documentation

ColorMatrixGM()

ColorMatrixGM::ColorMatrixGM ( )

inline

Definition at line 41 of file colormatrix.cpp.

                    {
        this->setBGColor(0xFF808080);
    }

Member Function Documentation

CreateSolidBitmap()

static sk_sp< SkImage > ColorMatrixGM::CreateSolidBitmap ( int  width, int  height  )

inlinestaticprotected

Definition at line 55 of file colormatrix.cpp.

                                                                   {
        SkBitmap bm;
        bm.allocN32Pixels(width, height);
        SkCanvas canvas(bm);
        canvas.clear(0x0);
        for (int y = 0; y < height; ++y) {
            for (int x = 0; x < width; ++x) {
                SkPaint paint;
                paint.setColor(SkColorSetARGB(255, x * 255 / width, y * 255 / height, 0));
                canvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(x),
                    SkIntToScalar(y), SK_Scalar1, SK_Scalar1), paint);
            }
        }
        return bm.asImage();
    }

CreateTransparentBitmap()

static sk_sp< SkImage > ColorMatrixGM::CreateTransparentBitmap ( int  width, int  height  )

inlinestaticprotected

Definition at line 72 of file colormatrix.cpp.

                                                                         {
        SkBitmap bm;
        bm.allocN32Pixels(width, height);
        SkCanvas canvas(bm);
        canvas.clear(0x0);
 
        SkPoint pts[] = {{0, 0}, {SkIntToScalar(width), SkIntToScalar(height)}};
        SkColor colors[] = {0x00000000, 0xFFFFFFFF};
        SkPaint paint;
        paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2,
                                                     SkTileMode::kClamp));
        canvas.drawRect(SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)), paint);
        return bm.asImage();
    }

getISize()

SkISize ColorMatrixGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 48 of file colormatrix.cpp.

{ return SkISize::Make(WIDTH, HEIGHT); }

getName()

SkString ColorMatrixGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 46 of file colormatrix.cpp.

{ return SkString("colormatrix"); }

onDraw()

void ColorMatrixGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 87 of file colormatrix.cpp.

                                           {
        SkPaint paint;
        SkColorMatrix matrix;
 
        paint.setBlendMode(SkBlendMode::kSrc);
        const SkImage* bmps[] = { fSolidImg.get(), fTransparentImg.get() };
 
        for (size_t i = 0; i < std::size(bmps); ++i) {
            matrix.setIdentity();
            set_color_matrix(&paint, matrix);
            canvas->drawImage(bmps[i], 0, 0, SkSamplingOptions(), &paint);
 
            ///////////////////////////////////////////////
 
            matrix.setSaturation(0.0f);
            set_color_matrix(&paint, matrix);
            canvas->drawImage(bmps[i], 80, 0, SkSamplingOptions(), &paint);
 
            matrix.setSaturation(0.5f);
            set_color_matrix(&paint, matrix);
            canvas->drawImage(bmps[i], 160, 0, SkSamplingOptions(), &paint);
 
            matrix.setSaturation(1.0f);
            set_color_matrix(&paint, matrix);
            canvas->drawImage(bmps[i], 240, 0, SkSamplingOptions(), &paint);
 
            matrix.setSaturation(2.0f);
            set_color_matrix(&paint, matrix);
            canvas->drawImage(bmps[i], 320, 0, SkSamplingOptions(), &paint);
 
            ///////////////////////////////////////////////
 
            // Move red into alpha, set color to white
            float data[20] = {
                0,  0, 0, 0, 1,
                0,  0, 0, 0, 1,
                0,  0, 0, 0, 1,
                1, 0, 0, 0, 0,
            };
 
            set_array(&paint, data);
            canvas->drawImage(bmps[i], 400, 0, SkSamplingOptions(), &paint);
            ///////////////////////////////////////////////
            canvas->translate(0, 80);
        }
    }

onOnceBeforeDraw()

void ColorMatrixGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 50 of file colormatrix.cpp.

                                     {
        fSolidImg = CreateSolidBitmap(64, 64);
        fTransparentImg = CreateTransparentBitmap(64, 64);
    }

---

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

• third_party/skia/gm/colormatrix.cpp