VariedTextGM Class Reference

Inheritance diagram for VariedTextGM:

Public Member Functions
	VariedTextGM (bool effectiveClip, bool lcd)
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	onOnceBeforeDraw () override
void	onDraw (SkCanvas *canvas) override
bool	runAsBench () const 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

Draws text with random parameters. The text draws each get their own clip rect. It is also used as a bench to measure how well the GPU backend combines draw ops for text draws.

Definition at line 32 of file variedtext.cpp.

Constructor & Destructor Documentation

VariedTextGM()

VariedTextGM::VariedTextGM ( bool  effectiveClip, bool  lcd  )

inline

Definition at line 34 of file variedtext.cpp.

        : fEffectiveClip(effectiveClip)
        , fLCD(lcd) {
    }

Member Function Documentation

getISize()

SkISize VariedTextGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 55 of file variedtext.cpp.

{ return SkISize::Make(640, 480); }

getName()

SkString VariedTextGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 40 of file variedtext.cpp.

                                      {
        SkString name("varied_text");
        if (fEffectiveClip) {
            name.append("_clipped");
        } else {
            name.append("_ignorable_clip");
        }
        if (fLCD) {
            name.append("_lcd");
        } else {
            name.append("_no_lcd");
        }
        return name;
    }

onDraw()

void VariedTextGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 116 of file variedtext.cpp.

                                           {
        for (int i = 0; i < kCnt; ++i) {
            fPaint.setColor(fColors[i]);
            fFont.setSize(fPtSizes[i]);
            fFont.setTypeface(fTypefaces[fTypefaceIndices[i]]);
 
            canvas->save();
                canvas->clipRect(fClipRects[i]);
                canvas->translate(fOffsets[i].fX, fOffsets[i].fY);
                canvas->drawSimpleText(fStrings[i].c_str(), fStrings[i].size(), SkTextEncoding::kUTF8,
                                       0, 0, fFont, fPaint);
            canvas->restore();
        }
 
        // Visualize the clips, but not in bench mode.
        if (kBench_Mode != this->getMode()) {
            SkPaint wirePaint;
            wirePaint.setAntiAlias(true);
            wirePaint.setStrokeWidth(0);
            wirePaint.setStyle(SkPaint::kStroke_Style);
            for (int i = 0; i < kCnt; ++i) {
                canvas->drawRect(fClipRects[i], wirePaint);
            }
        }
    }

onOnceBeforeDraw()

void VariedTextGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 57 of file variedtext.cpp.

                                     {
        fPaint.setAntiAlias(true);
        fFont.setEdging(fLCD ? SkFont::Edging::kSubpixelAntiAlias : SkFont::Edging::kAntiAlias);
 
        SkISize size = this->getISize();
        SkScalar w = SkIntToScalar(size.fWidth);
        SkScalar h = SkIntToScalar(size.fHeight);
 
        SkASSERTF(4 == std::size(fTypefaces), "typeface_cnt");
        fTypefaces[0] = ToolUtils::CreatePortableTypeface("sans-serif", SkFontStyle());
        fTypefaces[1] = ToolUtils::CreatePortableTypeface("sans-serif", SkFontStyle::Bold());
        fTypefaces[2] = ToolUtils::CreatePortableTypeface("serif", SkFontStyle());
        fTypefaces[3] = ToolUtils::CreatePortableTypeface("serif", SkFontStyle::Bold());
 
        SkRandom random;
        for (int i = 0; i < kCnt; ++i) {
            int length = random.nextRangeU(kMinLength, kMaxLength);
            char text[kMaxLength];
            for (int j = 0; j < length; ++j) {
                text[j] = (char)random.nextRangeU('!', 'z');
            }
            fStrings[i].set(text, length);
 
            fColors[i] = random.nextU();
            fColors[i] |= 0xFF000000;
            fColors[i] = ToolUtils::color_to_565(fColors[i]);
 
            constexpr SkScalar kMinPtSize = 8.f;
            constexpr SkScalar kMaxPtSize = 32.f;
 
            fPtSizes[i] = random.nextRangeScalar(kMinPtSize, kMaxPtSize);
 
            fTypefaceIndices[i] = random.nextULessThan(std::size(fTypefaces));
 
            SkRect r;
            fPaint.setColor(fColors[i]);
            fFont.setTypeface(fTypefaces[fTypefaceIndices[i]]);
            fFont.setSize(fPtSizes[i]);
 
            fFont.measureText(fStrings[i].c_str(), fStrings[i].size(), SkTextEncoding::kUTF8, &r);
            // The set of x,y offsets which place the bounding box inside the GM's border.
            SkRect safeRect = SkRect::MakeLTRB(-r.fLeft, -r.fTop, w - r.fRight, h - r.fBottom);
            if (safeRect.isEmpty()) {
                // If the bounds don't fit then allow any offset in the GM's border.
                safeRect = SkRect::MakeWH(w, h);
            }
            fOffsets[i].fX = random.nextRangeScalar(safeRect.fLeft, safeRect.fRight);
            fOffsets[i].fY = random.nextRangeScalar(safeRect.fTop, safeRect.fBottom);
 
            fClipRects[i] = r;
            fClipRects[i].offset(fOffsets[i].fX, fOffsets[i].fY);
            fClipRects[i].outset(2.f, 2.f);
 
            if (fEffectiveClip) {
                fClipRects[i].fRight -= 0.25f * fClipRects[i].width();
            }
        }
    }

runAsBench()

bool VariedTextGM::runAsBench ( ) const

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 142 of file variedtext.cpp.

{ return true; }

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

• third_party/skia/gm/variedtext.cpp