PathTextSlide Class Reference

Inheritance diagram for PathTextSlide:

Classes
struct	Glyph
class	GlyphAnimator
class	MovingGlyphAnimator
class	WavyGlyphAnimator

Public Member Functions
	PathTextSlide ()
virtual void	reset ()
void	load (SkScalar w, SkScalar h) final
void	resize (SkScalar w, SkScalar h) final
bool	onChar (SkUnichar) override
bool	animate (double nanos) final
void	draw (SkCanvas *canvas) override
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	draw (SkCanvas *canvas)=0
virtual bool	animate (double nanos)
virtual void	load (SkScalar winWidth, SkScalar winHeight)
virtual void	resize (SkScalar winWidth, SkScalar winHeight)
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

Protected Attributes
Glyph	fGlyphs [kNumPaths]
SkRandom	fRand {25}
SkPath	fClipPath = ToolUtils::make_star(SkRect{0, 0, 1, 1}, 11, 3)
bool	fDoClip = false
std::unique_ptr< GlyphAnimator >	fGlyphAnimator = std::make_unique<GlyphAnimator>(fGlyphs)
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 25 of file PathTextSlide.cpp.

Constructor & Destructor Documentation

PathTextSlide()

PathTextSlide::PathTextSlide ( )

inline

Definition at line 30 of file PathTextSlide.cpp.

{ fName = "PathText"; }

Member Function Documentation

animate()

bool PathTextSlide::animate ( double  nanos )

inlinefinalvirtual

Reimplemented from Slide.

Definition at line 70 of file PathTextSlide.cpp.

                                     {
        return fGlyphAnimator->animate(nanos, fSize.width(), fSize.height());
    }

draw()

void PathTextSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 74 of file PathTextSlide.cpp.

                                         {
        if (fDoClip) {
            SkPath deviceSpaceClipPath = fClipPath;
            deviceSpaceClipPath.transform(SkMatrix::Scale(fSize.width(), fSize.height()));
            canvas->save();
            canvas->clipPath(deviceSpaceClipPath, SkClipOp::kDifference, true);
            canvas->clear(SK_ColorBLACK);
            canvas->restore();
            canvas->clipPath(deviceSpaceClipPath, SkClipOp::kIntersect, true);
        }
        fGlyphAnimator->draw(canvas);
    }

load()

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

inlinefinalvirtual

Reimplemented from Slide.

Definition at line 39 of file PathTextSlide.cpp.

                                            {
        fSize = {w, h};
 
        SkFont defaultFont = ToolUtils::DefaultFont();
        SkStrikeSpec strikeSpec = SkStrikeSpec::MakeWithNoDevice(defaultFont);
        SkBulkGlyphMetricsAndPaths pathMaker{strikeSpec};
        SkPath glyphPaths[52];
        for (int i = 0; i < 52; ++i) {
            // I and l are rects on OS X ...
            char c = "aQCDEFGH7JKLMNOPBRZTUVWXYSAbcdefghijk1mnopqrstuvwxyz"[i];
            SkGlyphID id(defaultFont.unicharToGlyph(c));
            const SkGlyph* glyph = pathMaker.glyph(id);
            if (glyph->path()) {
                glyphPaths[i] = *glyph->path();
            }
        }
 
        for (int i = 0; i < kNumPaths; ++i) {
            const SkPath& p = glyphPaths[i % 52];
            fGlyphs[i].init(fRand, p);
        }
        this->reset();
    }

onChar()

bool PathTextSlide::onChar ( SkUnichar  unichar )

overridevirtual

Reimplemented from Slide.

Definition at line 435 of file PathTextSlide.cpp.

                                            {
    switch (unichar) {
        case 'X':
            fDoClip = !fDoClip;
            return true;
        case 'S':
            fGlyphAnimator = std::make_unique<GlyphAnimator>(fGlyphs);
            fGlyphAnimator->reset(&fRand, fSize.width(), fSize.height());
            return true;
        case 'M':
            fGlyphAnimator = std::make_unique<MovingGlyphAnimator>(fGlyphs);
            fGlyphAnimator->reset(&fRand, fSize.width(), fSize.height());
            return true;
        case 'W':
            fGlyphAnimator = std::make_unique<WavyGlyphAnimator>(fGlyphs);
            fGlyphAnimator->reset(&fRand, fSize.width(), fSize.height());
            return true;
    }
    return false;
}

reset()

virtual void PathTextSlide::reset ( )

inlinevirtual

Definition at line 32 of file PathTextSlide.cpp.

                         {
        for (Glyph& glyph : fGlyphs) {
            glyph.reset(fRand, fSize.width(), fSize.height());
        }
        fGlyphAnimator->reset(&fRand, fSize.width(), fSize.height());
    }

resize()

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

inlinefinalvirtual

Reimplemented from Slide.

Definition at line 63 of file PathTextSlide.cpp.

                                              {
        fSize = {w, h};
        this->reset();
    }

Member Data Documentation

fClipPath

SkPath PathTextSlide::fClipPath = ToolUtils::make_star(SkRect{0, 0, 1, 1}, 11, 3)

protected

Definition at line 127 of file PathTextSlide.cpp.

fDoClip

bool PathTextSlide::fDoClip = false

protected

Definition at line 128 of file PathTextSlide.cpp.

fGlyphAnimator

std::unique_ptr<GlyphAnimator> PathTextSlide::fGlyphAnimator = std::make_unique<GlyphAnimator>(fGlyphs)

protected

Definition at line 129 of file PathTextSlide.cpp.

fGlyphs

Glyph PathTextSlide::fGlyphs[kNumPaths]

protected

Definition at line 125 of file PathTextSlide.cpp.

fRand

SkRandom PathTextSlide::fRand {25}

protected

Definition at line 126 of file PathTextSlide.cpp.

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

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