skiagm::TextBlobColorTrans Class Reference

Inheritance diagram for skiagm::TextBlobColorTrans:

Public Member Functions
	TextBlobColorTrans ()
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
void	onOnceBeforeDraw () override
SkString	getName () const override
SkISize	getISize () override
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 28 of file textblobcolortrans.cpp.

Constructor & Destructor Documentation

TextBlobColorTrans()

skiagm::TextBlobColorTrans::TextBlobColorTrans ( )

inline

Definition at line 33 of file textblobcolortrans.cpp.

{ }

Member Function Documentation

getISize()

SkISize skiagm::TextBlobColorTrans::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 63 of file textblobcolortrans.cpp.

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

getName()

SkString skiagm::TextBlobColorTrans::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 61 of file textblobcolortrans.cpp.

{ return SkString("textblobcolortrans"); }

onDraw()

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

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 65 of file textblobcolortrans.cpp.

                                           {
 
        canvas->drawColor(SK_ColorGRAY);
 
        SkPaint paint;
        canvas->translate(10, 40);
 
        SkRect bounds = fBlob->bounds();
 
        // Colors were chosen to map to pairs of canonical colors.  The GPU Backend will cache A8
        // Texture Blobs based on the canonical color they map to.  Canonical colors are used to
        // create masks.  For A8 there are 8 of them.
        SkColor colors[] = {SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorYELLOW, SK_ColorWHITE};
 
        size_t count = std::size(colors);
        size_t colorIndex = 0;
        for (int y = 0; y + SkScalarFloorToInt(bounds.height()) < kHeight;
             y += SkScalarFloorToInt(bounds.height())) {
            paint.setColor(colors[colorIndex++ % count]);
            canvas->save();
            canvas->translate(0, SkIntToScalar(y));
            canvas->drawTextBlob(fBlob, 0, 0, paint);
            canvas->restore();
        }
    }

onOnceBeforeDraw()

void skiagm::TextBlobColorTrans::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 36 of file textblobcolortrans.cpp.

                                     {
        SkTextBlobBuilder builder;
 
        // make textblob
        // Large text is used to trigger atlas eviction
        SkFont font(ToolUtils::DefaultPortableTypeface(), 256);
        font.setEdging(SkFont::Edging::kAlias);
        const char* text = "AB";
 
        SkRect bounds;
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
 
        SkScalar yOffset = bounds.height();
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset - 30);
 
        // A8
        font.setSize(28);
        text = "The quick brown fox jumps over the lazy dog.";
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        ToolUtils::add_to_text_blob(&builder, text, font, 0, yOffset - 8);
 
        // build
        fBlob = builder.make();
    }

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

• third_party/skia/gm/textblobcolortrans.cpp