Request Struct Reference

#include <Request.h>

Public Member Functions
	Request (SkString rootUrl)
	~Request ()
sk_sp< SkData >	drawToPng (int n, int m=-1)
sk_sp< SkData >	writeOutSkp ()
SkCanvas *	getCanvas ()
bool	enableGPU (bool enable)
bool	setOverdraw (bool enable)
bool	setColorMode (int mode)
bool	hasPicture () const
int	getLastOp () const
bool	initPictureFromStream (SkStream *)
sk_sp< SkData >	getJsonOps ()
sk_sp< SkData >	getJsonOpsTask ()
sk_sp< SkData >	getJsonInfo (int n)
SkColor	getPixel (int x, int y)

Public Attributes
UploadContext *	fUploadContext
std::unique_ptr< DebugCanvas >	fDebugCanvas
UrlDataManager	fUrlDataManager

Detailed Description

Definition at line 34 of file Request.h.

Constructor & Destructor Documentation

Request()

Request::Request

(

SkString

rootUrl

)

Definition at line 29 of file Request.cpp.

    : fUploadContext(nullptr)
    , fUrlDataManager(rootUrl)
    , fGPUEnabled(false)
    , fOverdraw(false)
    , fColorMode(0) {
    // create surface
    GrContextOptions grContextOpts;
    fContextFactory = new GrContextFactory(grContextOpts);
}

~Request()

Request::~Request

(

)

Definition at line 40 of file Request.cpp.

                  {
    if (fContextFactory) {
        delete fContextFactory;
    }
}

Member Function Documentation

drawToPng()

sk_sp< SkData > Request::drawToPng	(	int	n,
		int	m = -1
	)

Definition at line 81 of file Request.cpp.

                                             {
    //fDebugCanvas->setOverdrawViz(true);
    auto* canvas = this->getCanvas();
    canvas->clear(SK_ColorTRANSPARENT);
    fDebugCanvas->drawTo(canvas, n, m);
    //fDebugCanvas->setOverdrawViz(false);
    return writeCanvasToPng(this->getCanvas());
}

enableGPU()

bool Request::enableGPU

(

bool

enable

)

Definition at line 181 of file Request.cpp.

                                   {
    if (enable) {
        SkSurface* surface = this->createGPUSurface();
        if (surface) {
            fSurface.reset(surface);
            fGPUEnabled = true;
 
            // When we switch to GPU, there seems to be some mystery draws in the canvas.  So we
            // draw once to flush the pipe
            // TODO understand what is actually happening here
            if (fDebugCanvas) {
                fDebugCanvas->drawTo(this->getCanvas(), this->getLastOp());
                this->directContext()->flush(fSurface.get());
            }
 
            return true;
        }
        return false;
    }
    fSurface.reset(this->createCPUSurface());
    fGPUEnabled = false;
    return true;
}

getCanvas()

SkCanvas * Request::getCanvas

(

)

Definition at line 58 of file Request.cpp.

                             {
#ifdef SK_GL
    GrContextFactory* factory = fContextFactory;
    GLTestContext* gl = factory->getContextInfo(skgpu::ContextType::kGL,
            GrContextFactory::ContextOverrides::kNone).glContext();
    if (!gl) {
        gl = factory->getContextInfo(skgpu::ContextType::kGLES,
                                     GrContextFactory::ContextOverrides::kNone).glContext();
    }
    if (gl) {
        gl->makeCurrent();
    }
#endif
    SkASSERT(fDebugCanvas);
 
    // create the appropriate surface if necessary
    if (!fSurface) {
        this->enableGPU(fGPUEnabled);
    }
    SkCanvas* target = fSurface->getCanvas();
    return target;
}

getJsonInfo()

sk_sp< SkData > Request::getJsonInfo

(

int

n

)

Definition at line 255 of file Request.cpp.

                                        {
    // drawTo
    sk_sp<SkSurface> surface(this->createCPUSurface());
    SkCanvas* canvas = surface->getCanvas();
 
    // TODO this is really slow and we should cache the matrix and clip
    fDebugCanvas->drawTo(canvas, n);
 
    // make some json
    SkDynamicMemoryWStream stream;
    SkJSONWriter writer(&stream, SkJSONWriter::Mode::kFast);
 
    SkM44 vm = fDebugCanvas->getCurrentMatrix();
    SkIRect clip = fDebugCanvas->getCurrentClip();
 
    writer.beginObject(); // root
    writer.appendName("ViewMatrix");
    DrawCommand::MakeJsonMatrix44(writer, vm);
    writer.appendName("ClipRect");
    DrawCommand::MakeJsonIRect(writer, clip);
    writer.endObject(); // root
 
    // TODO: Old code explicitly avoided the null terminator in the returned data. Important?
    writer.flush();
    return stream.detachAsData();
}

getJsonOps()

sk_sp< SkData > Request::getJsonOps

(

)

Definition at line 227 of file Request.cpp.

                                  {
    SkCanvas* canvas = this->getCanvas();
    SkDynamicMemoryWStream stream;
    SkJSONWriter writer(&stream, SkJSONWriter::Mode::kFast);
    writer.beginObject(); // root
 
    writer.appendCString("mode", fGPUEnabled ? "gpu" : "cpu");
    writer.appendBool("drawGpuOpBounds", fDebugCanvas->getDrawGpuOpBounds());
    writer.appendS32("colorMode", fColorMode);
    fDebugCanvas->toJSON(writer, fUrlDataManager, canvas);
 
    writer.endObject(); // root
    writer.flush();
    return stream.detachAsData();
}

getJsonOpsTask()

sk_sp< SkData > Request::getJsonOpsTask

(

)

Definition at line 243 of file Request.cpp.

                                      {
    SkCanvas* canvas = this->getCanvas();
    SkASSERT(fGPUEnabled);
    SkDynamicMemoryWStream stream;
    SkJSONWriter writer(&stream, SkJSONWriter::Mode::kFast);
 
    fDebugCanvas->toJSONOpsTask(writer, canvas);
 
    writer.flush();
    return stream.detachAsData();
}

getLastOp()

int Request::getLastOp ( ) const

inline

Definition at line 46 of file Request.h.

{ return fDebugCanvas->getSize() - 1; }

getPixel()

SkColor Request::getPixel	(	int	x,
		int	y
	)

Definition at line 282 of file Request.cpp.

                                      {
    SkBitmap bmp;
    bmp.allocPixels(this->getCanvas()->imageInfo().makeWH(1, 1));
    SkAssertResult(this->getCanvas()->readPixels(bmp, x, y));
    return bmp.getColor(0, 0);
}

hasPicture()

bool Request::hasPicture ( ) const

inline

Definition at line 45 of file Request.h.

{ return SkToBool(fPicture.get()); }

initPictureFromStream()

bool Request::initPictureFromStream

(

SkStream *

stream

)

Definition at line 205 of file Request.cpp.

                                                    {
    // parse picture from stream
    fPicture = SkPicture::MakeFromStream(stream);
    if (!fPicture) {
        fprintf(stderr, "Could not create picture from stream.\n");
        return false;
    }
 
    // reinitialize canvas with the new picture dimensions
    this->enableGPU(fGPUEnabled);
 
    // pour picture into debug canvas
    SkIRect bounds = this->getBounds();
    fDebugCanvas = std::make_unique<DebugCanvas>(bounds.width(), bounds.height());
    fDebugCanvas->drawPicture(fPicture);
 
    // for some reason we need to 'flush' the debug canvas by drawing all of the ops
    fDebugCanvas->drawTo(this->getCanvas(), this->getLastOp());
    this->directContext()->flush(fSurface.get());
    return true;
}

setColorMode()

bool Request::setColorMode

(

int

mode

)

Definition at line 176 of file Request.cpp.

                                   {
    fColorMode = mode;
    return enableGPU(fGPUEnabled);
}

setOverdraw()

bool Request::setOverdraw

(

bool

enable

)

Definition at line 171 of file Request.cpp.

                                     {
    fOverdraw = enable;
    return true;
}

writeOutSkp()

sk_sp< SkData > Request::writeOutSkp

(

)

Definition at line 90 of file Request.cpp.

                                   {
    // Playback into picture recorder
    SkIRect bounds = this->getBounds();
    SkPictureRecorder recorder;
    SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(bounds.width()),
                                               SkIntToScalar(bounds.height()));
 
    fDebugCanvas->draw(canvas);
 
    return recorder.finishRecordingAsPicture()->serialize();
}

Member Data Documentation

fDebugCanvas

std::unique_ptr<DebugCanvas> Request::fDebugCanvas

Definition at line 63 of file Request.h.

fUploadContext

UploadContext* Request::fUploadContext

Definition at line 62 of file Request.h.

fUrlDataManager

UrlDataManager Request::fUrlDataManager

Definition at line 64 of file Request.h.

---

The documentation for this struct was generated from the following files:

• third_party/skia/tools/skiaserve/Request.h
• third_party/skia/tools/skiaserve/Request.cpp