GlyphTransformView Class Reference

Inheritance diagram for GlyphTransformView:

Public Member Functions
	GlyphTransformView ()
void	load (SkScalar w, SkScalar h) override
void	resize (SkScalar w, SkScalar h) override
void	draw (SkCanvas *canvas) override
bool	animate (double nanos) override
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	unload ()
virtual bool	onChar (SkUnichar c)
virtual bool	onMouse (SkScalar x, SkScalar y, skui::InputState state, skui::ModifierKey modifiers)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
const SkString &	getName ()
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 24 of file GlyphTransformSlide.cpp.

Constructor & Destructor Documentation

GlyphTransformView()

GlyphTransformView::GlyphTransformView ( )

inline

Definition at line 26 of file GlyphTransformSlide.cpp.

{ fName = "Glyph Transform"; }

Member Function Documentation

animate()

bool GlyphTransformView::animate ( double  nanos )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 57 of file GlyphTransformSlide.cpp.

                                        {
        constexpr SkScalar maxt = 100000;
        double t = TimeUtils::PingPong(1e-9 * nanos, 20, 0, 0, maxt); // d3 t is in milliseconds
 
        fTranslate.set(sin(t / 3000) - t * fSize.width() * 0.7 / maxt, sin(t / 999) / t);
        fScale = 4.5 - std::sqrt(t) / 99;
        fRotate = sin(t / 734);
 
        return true;
    }

draw()

void GlyphTransformView::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 35 of file GlyphTransformSlide.cpp.

                                         {
        SkPaint paint;
 
        SkFont font(fEmojiFont.typeface);
        const char* text = fEmojiFont.sampleText;
 
        double baseline = fSize.height() / 2;
        canvas->drawLine(0, baseline, fSize.width(), baseline, paint);
 
        SkMatrix ctm;
        ctm.setRotate(fRotate); // d3 rotate takes degrees
        ctm.postScale(fScale * 4, fScale * 4);
        ctm.postTranslate(fTranslate.fX  + fSize.width() * 0.8, fTranslate.fY + baseline);
        canvas->concat(ctm);
 
        // d3 by default anchors text around the middle
        SkRect bounds;
        font.measureText(text, strlen(text), SkTextEncoding::kUTF8, &bounds);
        canvas->drawSimpleText(text, strlen(text), SkTextEncoding::kUTF8, -bounds.centerX(), -bounds.centerY(),
                               font, paint);
    }

load()

void GlyphTransformView::load ( SkScalar  w, SkScalar  h  )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 28 of file GlyphTransformSlide.cpp.

                                               {
        fEmojiFont = ToolUtils::EmojiSample();
        fSize = {w, h};
    }

resize()

void GlyphTransformView::resize ( SkScalar  w, SkScalar  h  )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 33 of file GlyphTransformSlide.cpp.

{ fSize = {w, h}; }

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

• third_party/skia/tools/viewer/GlyphTransformSlide.cpp