GraphitePrimitivesSlide Class Reference

Inheritance diagram for GraphitePrimitivesSlide:

Classes
class	Click

Public Member Functions
	GraphitePrimitivesSlide ()
void	draw (SkCanvas *canvas) override
bool	onChar (SkUnichar) override
Public Member Functions inherited from ClickHandlerSlide
bool	onMouse (SkScalar x, SkScalar y, skui::InputState clickState, skui::ModifierKey modifierKeys) final
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 Member Functions
Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey) override
bool	onClick (Click *) override
Protected Member Functions inherited from ClickHandlerSlide
virtual Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey modi)=0
virtual bool	onClick (Click *)=0

Additional Inherited Members
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 440 of file GraphitePrimitivesSlide.cpp.

Constructor & Destructor Documentation

GraphitePrimitivesSlide()

GraphitePrimitivesSlide::GraphitePrimitivesSlide ( )

inline

Definition at line 445 of file GraphitePrimitivesSlide.cpp.

        : fOrigin{300.f, 300.f}
        , fXAxisPoint{300.f + kBaseScale, 300.f}
        , fYAxisPoint{300.f, 300.f + kBaseScale}
        , fStrokeWidth{10.f}
        , fJoinMode(SkPaint::kMiter_Join)
        , fMode(PrimitiveMode::kFillRect) {
        fName = "GraphitePrimitives";
    }

Member Function Documentation

draw()

void GraphitePrimitivesSlide::draw ( SkCanvas *  canvas )

inlineoverridevirtual

Implements Slide.

Definition at line 455 of file GraphitePrimitivesSlide.cpp.

                                         {
        canvas->save();
        SkM44 viewMatrix = canvas->getLocalToDevice();
 
        canvas->concat(this->basisMatrix());
 
        SkM44 totalMatrix = canvas->getLocalToDevice();
 
            // Base shape + style
            SkRRect rrect = this->primitiveShape();
            canvas->drawRRect(rrect, paint(SK_ColorBLUE, this->strokeWidth(), fJoinMode));
        canvas->restore();
 
        canvas->save();
        canvas->resetMatrix();
            // Draw the full mesh directly in device space
            this->drawVertices(canvas, totalMatrix);
            // Draw the controls in device space so we get consistent circles for the click points.
            SkV4 origin = viewMatrix.map(fOrigin.x, fOrigin.y, 0.f, 1.f);
            SkV4 xAxis = viewMatrix.map(fXAxisPoint.x, fXAxisPoint.y, 0.f, 1.f);
            SkV4 yAxis = viewMatrix.map(fYAxisPoint.x, fYAxisPoint.y, 0.f, 1.f);
 
            // Axes
            canvas->drawLine({origin.x/origin.w, origin.y/origin.w},
                             {xAxis.x/xAxis.w, xAxis.y/xAxis.w}, paint(SK_ColorRED, 0.f));
            canvas->drawLine({origin.x/origin.w, origin.y/origin.w},
                             {yAxis.x/yAxis.w, yAxis.y/yAxis.w}, paint(SK_ColorGREEN, 0.f));
 
            // Control points
            canvas->drawCircle({origin.x/origin.w, origin.y/origin.w},
                               kControlPointRadius, paint(SK_ColorBLACK));
            canvas->drawCircle({xAxis.x/xAxis.w, xAxis.y/xAxis.w},
                               kControlPointRadius, paint(SK_ColorRED));
            canvas->drawCircle({yAxis.x/yAxis.w, yAxis.y/yAxis.w},
                               kControlPointRadius, paint(SK_ColorGREEN));
        canvas->restore();
    }

onChar()

bool GraphitePrimitivesSlide::onChar ( SkUnichar  code )

overridevirtual

Reimplemented from Slide.

Definition at line 674 of file GraphitePrimitivesSlide.cpp.

                                                   {
        switch(code) {
            case '1':
                fMode = PrimitiveMode::kFillRect;
                return true;
            case '2':
                fMode = PrimitiveMode::kFillRRect;
                return true;
            case '3':
                fMode = PrimitiveMode::kStrokeRect;
                return true;
            case '4':
                fMode = PrimitiveMode::kStrokeRRect;
                return true;
            case '-':
                fStrokeWidth = std::max(0.f, fStrokeWidth - 0.4f);
                return true;
            case '=':
                fStrokeWidth = std::min(5 * kBaseScale, fStrokeWidth + 0.4f);
                return true;
            case 'q':
                fJoinMode = SkPaint::kRound_Join;
                return true;
            case 'w':
                fJoinMode = SkPaint::kBevel_Join;
                return true;
            case 'e':
                fJoinMode = SkPaint::kMiter_Join;
                return true;
            case 'r':
                fStrokeWidth = 10.f;
                fOrigin = {300.f, 300.f};
                fXAxisPoint = {300.f + kBaseScale, 300.f};
                fYAxisPoint = {300.f, 300.f + kBaseScale};
                return true;
            case 'c':
                fColorize = !fColorize;
                return true;
        }
        return false;
}

onClick()

bool GraphitePrimitivesSlide::onClick ( Click *  )

overrideprotected

Definition at line 668 of file GraphitePrimitivesSlide.cpp.

                                                                   {
    Click* myClick = (Click*) click;
    myClick->drag();
    return true;
}

onFindClickHandler()

ClickHandlerSlide::Click * GraphitePrimitivesSlide::onFindClickHandler ( SkScalar  x, SkScalar  y, skui::ModifierKey  modi  )

overrideprotectedvirtual

Return a Click object to handle the click. onClick will be called repeatedly with the latest mouse state tracked on the Click object until it returns false.

Implements ClickHandlerSlide.

Definition at line 651 of file GraphitePrimitivesSlide.cpp.

                                                                                       {
    auto selected = [x,y](const SkV2& p) {
        return ((p - SkV2{x,y}).length() < kControlPointRadius);
    };
 
    if (selected(fOrigin)) {
        return new Click(&fOrigin);
    } else if (selected(fXAxisPoint)) {
        return new Click(&fXAxisPoint);
    } else if (selected(fYAxisPoint)) {
        return new Click(&fYAxisPoint);
    } else {
        return nullptr;
    }
}

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

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