コード例 #1
0
static SkImage* make_image(GrContext* ctx, int w, int h, const SkIRect& ir) {
    const SkImageInfo info = SkImageInfo::MakeN32(w, h, kOpaque_SkAlphaType);
    SkAutoTUnref<SkSurface> surface(ctx ?
                                    SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info) :
                                    SkSurface::NewRaster(info));
    SkCanvas* canvas = surface->getCanvas();
    canvas->clear(SK_ColorWHITE);

    SkPaint paint;
    paint.setColor(SK_ColorBLACK);
    canvas->drawRect(SkRect::Make(ir), paint);
    return surface->newImageSnapshot();
}
コード例 #2
0
ファイル: PictureTest.cpp プロジェクト: WangCrystal/skia
// Only test this is in release mode. We deliberately crash in debug mode, since a valid caller
// should never do this.
static void test_bad_bitmap() {
    // This bitmap has a width and height but no pixels. As a result, attempting to record it will
    // fail.
    SkBitmap bm;
    bm.setInfo(SkImageInfo::MakeN32Premul(100, 100));
    SkPictureRecorder recorder;
    SkCanvas* recordingCanvas = recorder.beginRecording(100, 100);
    recordingCanvas->drawBitmap(bm, 0, 0);
    SkAutoTUnref<SkPicture> picture(recorder.endRecording());

    SkCanvas canvas;
    canvas.drawPicture(picture);
}
コード例 #3
0
static void test_abort(skiatest::Reporter* reporter) {
    SkDynamicMemoryWStream stream;
    auto doc = SkPDF::MakeDocument(&stream);

    SkCanvas* canvas = doc->beginPage(100, 100);
    canvas->drawColor(SK_ColorRED);
    doc->endPage();

    doc->abort();

    // Test that only the header is written, not the full document.
    REPORTER_ASSERT(reporter, stream.bytesWritten() < 256);
}
コード例 #4
0
void OsmAnd::MapRasterizer_P::rasterizePolylineIcons(
    const Context& context,
    SkCanvas& canvas,
    const SkPath& path,
    const MapStyleEvaluationResult& evalResult)
{
    bool ok;

    QString pathIconName;
    ok = evalResult.getStringValue(context.env->styleBuiltinValueDefs->id_OUTPUT_PATH_ICON, pathIconName);
    if (!ok || pathIconName.isEmpty())
        return;

    float pathIconStep = 0.0f;
    ok = evalResult.getFloatValue(context.env->styleBuiltinValueDefs->id_OUTPUT_PATH_ICON_STEP, pathIconStep);
    if (!ok || pathIconStep <= 0.0f)
        return;

    std::shared_ptr<const SkBitmap> pathIcon;
    ok = context.env->obtainMapIcon(pathIconName, pathIcon);
    if (!ok || !pathIcon)
        return;

    SkMatrix mIconTransform;
    mIconTransform.setIdentity();
    mIconTransform.setTranslate(-0.5f * pathIcon->width(), -0.5f * pathIcon->height());
    mIconTransform.postRotate(90.0f);

    SkPathMeasure pathMeasure(path, false);

    const auto length = pathMeasure.getLength();
    auto iconOffset = 0.5f * pathIconStep;
    const auto iconInstancesCount = static_cast<int>((length - iconOffset) / pathIconStep) + 1;
    if (iconInstancesCount < 1)
        return;

    SkMatrix mIconInstanceTransform;
    for (auto iconInstanceIdx = 0; iconInstanceIdx < iconInstancesCount; iconInstanceIdx++, iconOffset += pathIconStep)
    {
        SkMatrix mPinPoint;
        ok = pathMeasure.getMatrix(iconOffset, &mPinPoint);
        if (!ok)
            break;

        mIconInstanceTransform.setConcat(mPinPoint, mIconTransform);
        canvas.save();
        canvas.concat(mIconInstanceTransform);
        canvas.drawBitmap(*pathIcon, 0, 0, &_defaultPaint);
        canvas.restore();
    }
}
コード例 #5
0
ファイル: helloskia.cpp プロジェクト: 03050903/skia
JNIEXPORT void JNICALL Java_com_example_HelloSkiaActivity_drawIntoBitmap(JNIEnv* env,
        jobject thiz, jobject dstBitmap, jlong elapsedTime)
{
    // Grab the dst bitmap info and pixels
    AndroidBitmapInfo dstInfo;
    void* dstPixels;
    AndroidBitmap_getInfo(env, dstBitmap, &dstInfo);
    AndroidBitmap_lockPixels(env, dstBitmap, &dstPixels);

    SkImageInfo info = SkImageInfo::MakeN32Premul(dstInfo.width, dstInfo.height);

    // Create a surface from the given bitmap
    SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterDirect(info, dstPixels, dstInfo.stride));
    SkCanvas* canvas = surface->getCanvas();

    // Draw something "interesting"

    // Clear the canvas with a white color
    canvas->drawColor(SK_ColorWHITE);

    // Setup a SkPaint for drawing our text
    SkPaint paint;
    paint.setColor(SK_ColorBLACK); // This is a solid black color for our text
    paint.setTextSize(SkIntToScalar(30)); // Sets the text size to 30 pixels
    paint.setAntiAlias(true); // We turn on anti-aliasing so that the text to looks good.

    // Draw some text
    SkString text("Skia is Best!");
    SkScalar fontHeight = paint.getFontSpacing();
    canvas->drawText(text.c_str(), text.size(), // text's data and length
                     10, fontHeight,            // X and Y coordinates to place the text
                     paint);                    // SkPaint to tell how to draw the text

    // Adapt the SkPaint for drawing blue lines
    paint.setAntiAlias(false); // Turning off anti-aliasing speeds up the line drawing
    paint.setColor(0xFF0000FF); // This is a solid blue color for our lines
    paint.setStrokeWidth(SkIntToScalar(2)); // This makes the lines have a thickness of 2 pixels

    // Draw some interesting lines using trig functions
    for (int i = 0; i < 100; i++)
    {
        float x = (float)i / 99.0f;
        float offset = elapsedTime / 1000.0f;
        canvas->drawLine(sin(x * M_PI + offset) * 800.0f, 0,   // first endpoint
                         cos(x * M_PI + offset) * 800.0f, 800, // second endpoint
                         paint);                               // SkPapint to tell how to draw the line
    }

    // Unlock the dst's pixels
    AndroidBitmap_unlockPixels(env, dstBitmap);
}
コード例 #6
0
static void fuzz_drawText(Fuzz* fuzz, sk_sp<SkTypeface> font) {
    SkPaint p;
    init_paint(fuzz, &p);
    sk_sp<SkSurface> surface;
    init_surface(fuzz, &surface);

    char text[kTxtLen];
    init_string(fuzz, text, kTxtLen);

    SkScalar x, y;
    fuzz->next(&x, &y);
    // populate pts array
    SkPoint pts[kPtsLen];
    for (uint8_t i = 0; i < kPtsLen; ++i) {
        pts[i].set(x, y);
        x += p.getTextSize();
    }

    p.setTypeface(font);
    // set text related attributes
    bool b;
    fuzz->next(&b);
    p.setAutohinted(b);
    fuzz->next(&b);
    p.setDevKernText(b);
    fuzz->next(&b);
    p.setEmbeddedBitmapText(b);
    fuzz->next(&b);
    p.setFakeBoldText(b);
    fuzz->next(&b);
    p.setLCDRenderText(b);
    fuzz->next(&b);
    p.setLinearText(b);
    fuzz->next(&b);
    p.setSubpixelText(b);
    fuzz->next(&x);
    p.setTextScaleX(x);
    fuzz->next(&x);
    p.setTextSkewX(x);
    fuzz->next(&x);
    p.setTextSize(x);
    fuzz->next(&b);
    p.setVerticalText(b);

    SkCanvas* cnv = surface->getCanvas();
    cnv->drawPosText(text, (kTxtLen-1), pts, p);

    fuzz->next(&x);
    fuzz->next(&y);
    cnv->drawText(text, (kTxtLen-1), x, y, p);
}
コード例 #7
0
void CanvasRenderingContext2D::addHitRegion(const HitRegionOptions& options,
                                            ExceptionState& exceptionState) {
  if (options.id().isEmpty() && !options.control()) {
    exceptionState.throwDOMException(NotSupportedError,
                                     "Both id and control are null.");
    return;
  }

  if (options.control() &&
      !canvas()->isSupportedInteractiveCanvasFallback(*options.control())) {
    exceptionState.throwDOMException(NotSupportedError,
                                     "The control is neither null nor a "
                                     "supported interactive canvas fallback "
                                     "element.");
    return;
  }

  Path hitRegionPath = options.hasPath() ? options.path()->path() : m_path;

  SkCanvas* c = drawingCanvas();

  if (hitRegionPath.isEmpty() || !c || !state().isTransformInvertible() ||
      !c->getClipDeviceBounds(0)) {
    exceptionState.throwDOMException(NotSupportedError,
                                     "The specified path has no pixels.");
    return;
  }

  hitRegionPath.transform(state().transform());

  if (state().hasClip()) {
    hitRegionPath.intersectPath(state().getCurrentClipPath());
    if (hitRegionPath.isEmpty())
      exceptionState.throwDOMException(NotSupportedError,
                                       "The specified path has no pixels.");
  }

  if (!m_hitRegionManager)
    m_hitRegionManager = HitRegionManager::create();

  // Remove previous region (with id or control)
  m_hitRegionManager->removeHitRegionById(options.id());
  m_hitRegionManager->removeHitRegionByControl(options.control());

  HitRegion* hitRegion = HitRegion::create(hitRegionPath, options);
  Element* element = hitRegion->control();
  if (element && element->isDescendantOf(canvas()))
    updateElementAccessibility(hitRegion->path(), hitRegion->control());
  m_hitRegionManager->addHitRegion(hitRegion);
}
コード例 #8
0
ファイル: FontHarfBuzz.cpp プロジェクト: xiaolu31/webkit-node
void Font::drawComplexText(GraphicsContext* gc, const TextRun& run,
                           const FloatPoint& point, int from, int to) const
{
    if (!run.length())
        return;

    SkCanvas* canvas = gc->platformContext()->canvas();
    TextDrawingModeFlags textMode = gc->platformContext()->getTextDrawingMode();
    bool fill = textMode & TextModeFill;
    bool stroke = (textMode & TextModeStroke)
               && gc->platformContext()->getStrokeStyle() != NoStroke
               && gc->platformContext()->getStrokeThickness() > 0;

    if (!fill && !stroke)
        return;

    SkPaint strokePaint, fillPaint;
    if (fill) {
        gc->platformContext()->setupPaintForFilling(&fillPaint);
        setupForTextPainting(&fillPaint, gc->fillColor().rgb());
    }
    if (stroke) {
        gc->platformContext()->setupPaintForStroking(&strokePaint, 0, 0);
        setupForTextPainting(&strokePaint, gc->strokeColor().rgb());
    }

    ComplexTextController controller(this, run, point.x(), point.y());
    if (run.rtl())
        controller.setupForRTL();

    while (controller.nextScriptRun()) {
        // Check if there is any glyph found in the current script run.
        int fromGlyph, glyphLength;
        controller.glyphsForRange(from, to, fromGlyph, glyphLength);
        if (fromGlyph < 0 || glyphLength <= 0)
            continue;

        if (fill) {
            controller.fontPlatformDataForScriptRun()->setupPaint(&fillPaint);
            adjustTextRenderMode(&fillPaint, gc->platformContext());
            canvas->drawPosText(controller.glyphs() + fromGlyph, glyphLength << 1, controller.positions() + fromGlyph, fillPaint);
        }

        if (stroke) {
            controller.fontPlatformDataForScriptRun()->setupPaint(&strokePaint);
            adjustTextRenderMode(&strokePaint, gc->platformContext());
            canvas->drawPosText(controller.glyphs() + fromGlyph, glyphLength << 1, controller.positions() + fromGlyph, strokePaint);
        }
    }
}
コード例 #9
0
static SkImage* create_circle_texture(int size, SkColor color) {
    SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(size, size));
    SkCanvas* canvas = surface->getCanvas();
    canvas->clear(0xFF000000);

    SkPaint paint;
    paint.setColor(color);
    paint.setStrokeWidth(3);
    paint.setStyle(SkPaint::kStroke_Style);

    canvas->drawCircle(SkScalarHalf(size), SkScalarHalf(size), SkScalarHalf(size), paint);

    return surface->newImageSnapshot();
}
コード例 #10
0
void anchor_handle_renderer::draw_anchor (SkCanvas &canvas, const SkRect &rect, SkPaint &paint) const
{
  switch (m_node_type)
  {
    case handle_type::DIAMOND:
    {
      canvas.save ();
      canvas.translate (rect.centerX (), rect.centerY ());
      canvas.rotate (45);
      SkRect moved_rect = rect;
      moved_rect.offset (-rect.centerX (), -rect.centerY ());
      paint.setAntiAlias (true);
      canvas.drawRect (moved_rect, paint);
      canvas.restore ();
      break;
    }
    case handle_type::SQUARE:
      canvas.drawRect (rect, paint);
      break;
    case handle_type::CIRCLE:
      canvas.drawOval (rect, paint);
      break;
    case handle_type::DOUBLE_HEADED_ARROW:
    case handle_type::ROTATE_ARROW:
      SkPath path = qt2skia::path (*m_paths.at (m_node_type));
      SkMatrix trans;
      trans.setIdentity ();
      trans.postRotate (m_rotation_angle, 32, 32); // TODO: change all these to use info from path_storage (bounding box and center (possibly should be made 0))
      trans.postConcat (qt2skia::matrix (geom::rect2rect (QRectF (0, 0, 64, 64), qt2skia::rect (rect))));
      path.transform (trans);
      paint.setAntiAlias (true);
      canvas.drawPath (path, paint);
      break;
  }
}
コード例 #11
0
 void onDraw(SkCanvas* canvas) override {
     SkPaint blurPaint;
     SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(5.0f, 5.0f));
     blurPaint.setImageFilter(blur);
     const SkScalar tile_size = SkIntToScalar(128);
     SkRect bounds;
     if (!canvas->getClipBounds(&bounds)) {
         bounds.setEmpty();
     }
     int ts = SkScalarCeilToInt(tile_size);
     SkImageInfo info = SkImageInfo::MakeN32Premul(ts, ts);
     SkAutoTUnref<SkSurface> tileSurface(canvas->newSurface(info));
     if (!tileSurface.get()) {
         tileSurface.reset(SkSurface::NewRaster(info));
     }
     SkCanvas* tileCanvas = tileSurface->getCanvas();
     for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
         for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
             tileCanvas->save();
             tileCanvas->clear(0);
             tileCanvas->translate(-x, -y);
             SkRect rect = SkRect::MakeWH(WIDTH, HEIGHT);
             tileCanvas->saveLayer(&rect, &blurPaint);
             SkRRect rrect = SkRRect::MakeRectXY(rect.makeInset(20, 20), 25, 25);
             tileCanvas->clipRRect(rrect, SkRegion::kDifference_Op, true);
             SkPaint paint;
             tileCanvas->drawRect(rect, paint);
             tileCanvas->restore();
             tileCanvas->restore();
             canvas->drawImage(tileSurface->makeImageSnapshot().get(), x, y);
         }
     }
 }
コード例 #12
0
ファイル: BlurTest.cpp プロジェクト: C-Tillion/skia
// This exercises the problem discovered in crbug.com/570232. The return value from
// SkBlurMask::BoxBlur wasn't being checked in SkBlurMaskFilter.cpp::GrRRectBlurEffect::Create
DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(SmallBoxBlurBug, reporter, ctxInfo) {

    SkImageInfo info = SkImageInfo::MakeN32Premul(128, 128);
    auto surface(SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo, info));
    SkCanvas* canvas = surface->getCanvas();

    SkRect r = SkRect::MakeXYWH(10, 10, 100, 100);
    SkRRect rr = SkRRect::MakeRectXY(r, 10, 10);

    SkPaint p;
    p.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle, 0.01f));

    canvas->drawRRect(rr, p);
}
コード例 #13
0
/// M: added for HTML5-benchmark performance @{
PassRefPtr<Image> ImageBuffer::getContextImageRef() const
{
    SkCanvas* canvas = imageBufferCanvas(this);
    if (!canvas)
        return 0;
    SkDevice* device = canvas->getDevice();
    const SkBitmap& orig = device->accessBitmap(false);

    SkBitmapRef* ref = new SkBitmapRef(orig);
    RefPtr<Image> image = BitmapImage::create(ref, 0);
    ref->unref();

    return image;
}
コード例 #14
0
sk_sp<SkSpecialImage> SkDropShadowImageFilter::onFilterImage(SkSpecialImage* source,
                                                             const Context& ctx,
                                                             SkIPoint* offset) const {
    SkIPoint inputOffset = SkIPoint::Make(0, 0);
    sk_sp<SkSpecialImage> input(this->filterInput(0, source, ctx, &inputOffset));
    if (!input) {
        return nullptr;
    }

    const SkIRect inputBounds = SkIRect::MakeXYWH(inputOffset.x(), inputOffset.y(),
                                                  input->width(), input->height());
    SkIRect bounds;
    if (!this->applyCropRect(ctx, inputBounds, &bounds)) {
        return nullptr;
    }

    sk_sp<SkSpecialSurface> surf(source->makeSurface(ctx.outputProperties(), bounds.size()));
    if (!surf) {
        return nullptr;
    }

    SkCanvas* canvas = surf->getCanvas();
    SkASSERT(canvas);

    canvas->clear(0x0);

    SkVector sigma = SkVector::Make(fSigmaX, fSigmaY);
    ctx.ctm().mapVectors(&sigma, 1);
    sigma.fX = SkMaxScalar(0, sigma.fX);
    sigma.fY = SkMaxScalar(0, sigma.fY);

    SkPaint paint;
    paint.setAntiAlias(true);
    paint.setImageFilter(SkBlurImageFilter::Make(sigma.fX, sigma.fY, nullptr));
    paint.setColorFilter(SkColorFilter::MakeModeFilter(fColor, SkBlendMode::kSrcIn));

    SkVector offsetVec = SkVector::Make(fDx, fDy);
    ctx.ctm().mapVectors(&offsetVec, 1);

    canvas->translate(SkIntToScalar(inputOffset.fX - bounds.fLeft),
                      SkIntToScalar(inputOffset.fY - bounds.fTop));
    input->draw(canvas, offsetVec.fX, offsetVec.fY, &paint);

    if (fShadowMode == kDrawShadowAndForeground_ShadowMode) {
        input->draw(canvas, 0, 0, nullptr);
    }
    offset->fX = bounds.fLeft;
    offset->fY = bounds.fTop;
    return surf->makeImageSnapshot();
}
コード例 #15
0
void sk_canvas_draw_image_rect(sk_canvas_t* ccanvas, const sk_image_t* cimage,
                               const sk_rect_t* csrcR, const sk_rect_t* cdstR,
                               const sk_paint_t* cpaint) {
    SkCanvas* canvas = AsCanvas(ccanvas);
    const SkImage* image = AsImage(cimage);
    const SkRect& dst = AsRect(*cdstR);
    const SkPaint* paint = AsPaint(cpaint);

    if (csrcR) {
        canvas->drawImageRect(image, AsRect(*csrcR), dst, paint);
    } else {
        canvas->drawImageRect(image, dst, paint);
    }
}
コード例 #16
0
SkCanvas* TiledPictureRenderer::setupCanvas(int width, int height) {
    SkCanvas* canvas = this->INHERITED::setupCanvas(width, height);
    SkASSERT(fPicture);
    // Clip the tile to an area that is completely inside both the SkPicture and the viewport. This
    // is mostly important for tiles on the right and bottom edges as they may go over this area and
    // the picture may have some commands that draw outside of this area and so should not actually
    // be written.
    // Uses a clipRegion so that it will be unaffected by the scale factor, which may have been set
    // by INHERITED::setupCanvas.
    SkRegion clipRegion;
    clipRegion.setRect(0, 0, this->getViewWidth(), this->getViewHeight());
    canvas->clipRegion(clipRegion);
    return canvas;
}
コード例 #17
0
ファイル: Request.cpp プロジェクト: VarcoDevs/skia
SkColor Request::getPixel(int x, int y) {
    SkCanvas* canvas = this->getCanvas();
    canvas->flush();
    SkAutoTDelete<SkBitmap> bitmap(this->getBitmapFromCanvas(canvas));
    SkASSERT(bitmap);

    // Convert to format suitable for inspection
    sk_sp<SkData> encodedBitmap = sk_tools::encode_bitmap_for_png(*bitmap);
    SkASSERT(encodedBitmap.get());

    const uint8_t* start = encodedBitmap->bytes() + ((y * bitmap->width() + x) * 4);
    SkColor result = SkColorSetARGB(start[3], start[0], start[1], start[2]);
    return result;
}
コード例 #18
0
void draw(SkCanvas* canvas) {
    SkPictureRecorder recorder;
    SkCanvas* pictureCanvas = recorder.beginRecording({0, 0, 256, 256});
    SkPaint paint;
    pictureCanvas->drawRect(SkRect::MakeWH(200, 200), paint);
    paint.setColor(SK_ColorWHITE);
    pictureCanvas->drawRect(SkRect::MakeLTRB(20, 20, 180, 180), paint);
    sk_sp<SkPicture> picture = recorder.finishRecordingAsPicture();
    SkDynamicMemoryWStream writableStream;
    picture->serialize(&writableStream);
    std::unique_ptr<SkStreamAsset> readableStream = writableStream.detachAsStream();
    sk_sp<SkPicture> copy = SkPicture::MakeFromStream(readableStream.get());
    copy->playback(canvas);
}
コード例 #19
0
// Test out the layer replacement functionality with and w/o a BBH
void test_replacements(skiatest::Reporter* r, GrContext* context, bool doReplace) {
    SkAutoTUnref<const SkPicture> pic;

    {
        SkPictureRecorder recorder;
        SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kWidth), SkIntToScalar(kHeight));
        SkPaint paint;
        canvas->saveLayer(nullptr, &paint);
        canvas->clear(SK_ColorRED);
        canvas->restore();
        canvas->drawRect(SkRect::MakeWH(SkIntToScalar(kWidth / 2), SkIntToScalar(kHeight / 2)),
                         SkPaint());
        pic.reset(recorder.endRecording());
    }

    SkAutoTUnref<GrTexture> texture;
    SkPaint paint;
    GrLayerCache* layerCache = context->getLayerCache();

    if (doReplace) {
        int key[1] = { 0 };

        GrCachedLayer* layer = layerCache->findLayerOrCreate(pic->uniqueID(), 0, 2,
                                                             SkIRect::MakeWH(kWidth, kHeight),
                                                             SkIRect::MakeWH(kWidth, kHeight),
                                                             SkMatrix::I(), key, 1, &paint);

        GrSurfaceDesc desc;
        desc.fConfig = kSkia8888_GrPixelConfig;
        desc.fFlags = kRenderTarget_GrSurfaceFlag;
        desc.fWidth = kWidth;
        desc.fHeight = kHeight;
        desc.fSampleCnt = 0;

        texture.reset(context->textureProvider()->createTexture(
                desc, SkBudgeted::kNo, nullptr, 0));
        layer->setTexture(texture, SkIRect::MakeWH(kWidth, kHeight), false);
    }

    SkRecord rerecord;
    SkRecorder canvas(&rerecord, kWidth, kHeight);
    GrRecordReplaceDraw(pic, &canvas, layerCache, SkMatrix::I(), nullptr/*callback*/);

    int numLayers = count_instances_of_type<SkRecords::SaveLayer>(rerecord);
    if (doReplace) {
        REPORTER_ASSERT(r, 0 == numLayers);
    } else {
        REPORTER_ASSERT(r, 1 == numLayers);    
    }
}
コード例 #20
0
static void fuzz_drawPath(Fuzz* fuzz) {
    SkPaint p;
    init_paint(fuzz, &p);
    sk_sp<SkSurface> surface;
    init_surface(fuzz, &surface);

    // TODO(kjlubick): put the ability to fuzz a path in shared file, with
    // other common things (e.g. rects, lines)
    uint8_t i, j;
    fuzz->nextRange(&i, 0, 10); // set i to number of operations to perform
    SkPath path;
    SkScalar a, b, c, d, e, f;
    for (int k = 0; k < i; ++k) {
        fuzz->nextRange(&j, 0, 5); // set j to choose operation to perform
        switch (j) {
            case 0:
                fuzz->next(&a, &b);
                path.moveTo(a, b);
                break;
            case 1:
                fuzz->next(&a, &b);
                path.lineTo(a, b);
                break;
            case 2:
                fuzz->next(&a, &b, &c, &d);
                path.quadTo(a, b, c, d);
                break;
            case 3:
                fuzz->next(&a, &b, &c, &d, &e);
                path.conicTo(a, b, c, d, e);
                break;
            case 4:
                fuzz->next(&a, &b, &c, &d, &e, &f);
                path.cubicTo(a, b, c, d, e, f);
                break;
            case 5:
                fuzz->next(&a, &b, &c, &d, &e);
                path.arcTo(a, b, c, d, e);
                break;
        }
    }
    path.close();

    SkCanvas* cnv = surface->getCanvas();
    cnv->drawPath(path, p);

    bool bl;
    fuzz->next(&bl);
    cnv->clipPath(path, kIntersect_SkClipOp, bl);
}
コード例 #21
0
static void run_test(SkWStream* out, SkBlendMode mode, U8CPU alpha) {
    sk_sp<SkDocument> pdfDoc(SkDocument::MakePDF(out));
    SkCanvas* c = pdfDoc->beginPage(612.0f, 792.0f);
    SkPaint black;
    SkPaint background;
    background.setColor(SK_ColorWHITE);
    background.setAlpha(alpha);
    background.setBlendMode(mode);
    c->drawRect(SkRect::MakeWH(612.0f, 792.0f), background);
    c->drawRect(SkRect::MakeXYWH(36.0f, 36.0f, 9.0f, 9.0f), black);
    c->drawRect(SkRect::MakeXYWH(72.0f, 72.0f, 468.0f, 648.0f), background);
    c->drawRect(SkRect::MakeXYWH(108.0f, 108.0f, 9.0f, 9.0f), black);
    pdfDoc->close();
}
コード例 #22
0
void SkPictureImageFilter::drawPictureAtLocalResolution(SkSpecialImage* source,
                                                        SkCanvas* canvas,
                                                        const SkIRect& deviceBounds,
                                                        const Context& ctx) const {
    SkMatrix inverseCtm;
    if (!ctx.ctm().invert(&inverseCtm)) {
        return;
    }

    SkRect localBounds = SkRect::Make(ctx.clipBounds());
    inverseCtm.mapRect(&localBounds);
    if (!localBounds.intersect(fCropRect)) {
        return;
    }
    SkIRect localIBounds = localBounds.roundOut();

    sk_sp<SkSpecialImage> localImg;
    {                                                            
        const SkImageInfo info = SkImageInfo::MakeN32(localIBounds.width(), localIBounds.height(),
                                                      kPremul_SkAlphaType);

        sk_sp<SkSpecialSurface> localSurface(source->makeSurface(info));
        if (!localSurface) {
            return;
        }

        SkCanvas* localCanvas = localSurface->getCanvas();
        SkASSERT(localCanvas);

        localCanvas->translate(-SkIntToScalar(localIBounds.fLeft),
                               -SkIntToScalar(localIBounds.fTop));
        localCanvas->drawPicture(fPicture);

        localImg = localSurface->makeImageSnapshot();
        SkASSERT(localImg);
    }

    {
        canvas->translate(-SkIntToScalar(deviceBounds.fLeft), -SkIntToScalar(deviceBounds.fTop));
        canvas->concat(ctx.ctm());
        SkPaint paint;
        paint.setFilterQuality(fFilterQuality);

        localImg->draw(canvas,
                       SkIntToScalar(localIBounds.fLeft),
                       SkIntToScalar(localIBounds.fTop),
                       &paint);
    }
}
コード例 #23
0
static void paintSkBitmap(PlatformContextSkia* platformContext, const NativeImageSkia& bitmap, const SkIRect& srcRect, const SkRect& destRect, const SkXfermode::Mode& compOp)
{
#if PLATFORM(CHROMIUM)
    TRACE_EVENT0("skia", "paintSkBitmap");
#endif
    SkPaint paint;
    paint.setXfermodeMode(compOp);
    paint.setAlpha(platformContext->getNormalizedAlpha());
    paint.setLooper(platformContext->getDrawLooper());
    // only antialias if we're rotated or skewed
    paint.setAntiAlias(hasNon90rotation(platformContext));

    SkCanvas* canvas = platformContext->canvas();

    ResamplingMode resampling;
    if (platformContext->isAccelerated())
        resampling = RESAMPLE_LINEAR;
    else if (platformContext->printing())
        resampling = RESAMPLE_NONE;
    else {
        // Take into account scale applied to the canvas when computing sampling mode (e.g. CSS scale or page scale).
        SkRect destRectTarget = destRect;
        if (!(canvas->getTotalMatrix().getType() & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)))
            canvas->getTotalMatrix().mapRect(&destRectTarget, destRect);

        resampling = computeResamplingMode(canvas->getTotalMatrix(), bitmap, srcRect.width(), srcRect.height(),
                                           SkScalarToFloat(destRectTarget.width()), SkScalarToFloat(destRectTarget.height()));
    }

    if (resampling == RESAMPLE_NONE) {
      // FIXME: This is to not break tests (it results in the filter bitmap flag
      // being set to true). We need to decide if we respect RESAMPLE_NONE
      // being returned from computeResamplingMode.
        resampling = RESAMPLE_LINEAR;
    }
    resampling = limitResamplingMode(platformContext, resampling);
    paint.setFilterBitmap(resampling == RESAMPLE_LINEAR);
    if (resampling == RESAMPLE_AWESOME)
        drawResampledBitmap(*canvas, paint, bitmap, srcRect, destRect);
    else {
        // No resampling necessary, we can just draw the bitmap. We want to
        // filter it if we decided to do linear interpolation above, or if there
        // is something interesting going on with the matrix (like a rotation).
        // Note: for serialization, we will want to subset the bitmap first so
        // we don't send extra pixels.
        canvas->drawBitmapRect(bitmap.bitmap(), &srcRect, destRect, &paint);
    }
    platformContext->didDrawRect(destRect, paint, &bitmap.bitmap());
}
コード例 #24
0
SkSpecialImage* SkOffsetImageFilter::onFilterImage(SkSpecialImage* source,
                                                   const Context& ctx,
                                                   SkIPoint* offset) const {
    SkIPoint srcOffset = SkIPoint::Make(0, 0);
    SkAutoTUnref<SkSpecialImage> input(this->filterInput(0, source, ctx, &srcOffset));
    if (!input) {
        return nullptr;
    }

    SkVector vec;
    ctx.ctm().mapVectors(&vec, &fOffset, 1);

    if (!this->cropRectIsSet()) {
        offset->fX = srcOffset.fX + SkScalarRoundToInt(vec.fX);
        offset->fY = srcOffset.fY + SkScalarRoundToInt(vec.fY);
        return input.release();
    } else {
        SkIRect bounds;
        SkIRect srcBounds = SkIRect::MakeWH(input->width(), input->height());
        srcBounds.offset(srcOffset);
        if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
            return nullptr;
        }

        SkImageInfo info = SkImageInfo::MakeN32(bounds.width(), bounds.height(),
                                                kPremul_SkAlphaType);
        sk_sp<SkSpecialSurface> surf(source->makeSurface(info));
        if (!surf) {
            return nullptr;
        }

        SkCanvas* canvas = surf->getCanvas();
        SkASSERT(canvas);

        // TODO: it seems like this clear shouldn't be necessary (see skbug.com/5075)
        canvas->clear(0x0);

        SkPaint paint;
        paint.setXfermodeMode(SkXfermode::kSrc_Mode);
        canvas->translate(SkIntToScalar(srcOffset.fX - bounds.fLeft),
                          SkIntToScalar(srcOffset.fY - bounds.fTop));

        input->draw(canvas, vec.x(), vec.y(), &paint);

        offset->fX = bounds.fLeft;
        offset->fY = bounds.fTop;
        return surf->makeImageSnapshot().release();
    }
}
コード例 #25
0
void ClipRectToCanvas(const SkCanvas& canvas, const SkRect& srcRect, SkRect* destRect) {
    // Translate into the canvas' coordinate space. This is where the clipping
    // region applies.
    SkRect transformedSrc;
    canvas.getTotalMatrix().mapRect(&transformedSrc, srcRect);

    // Do the intersection.
    SkRect transformedDest;
    IntersectRectAndRegion(canvas.getTotalClip(), transformedSrc, &transformedDest);

    // Now transform it back into world space.
    SkMatrix inverseTransform;
    canvas.getTotalMatrix().invert(&inverseTransform);
    inverseTransform.mapRect(destRect, transformedDest);
}
コード例 #26
0
ファイル: Canvas.cpp プロジェクト: Abhishekh-TEL/pdroid
 static void drawString(JNIEnv* env, jobject canvas, jstring text,
                        jfloat x, jfloat y, jobject paint) {
     NPE_CHECK_RETURN_VOID(env, canvas);
     NPE_CHECK_RETURN_VOID(env, paint);
     NPE_CHECK_RETURN_VOID(env, text);
     size_t count = env->GetStringLength(text);
     if (0 == count) {
         return;
     }
     const jchar* text_ = env->GetStringChars(text, NULL);
     SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas);
     c->drawText(text_, count << 1, SkFloatToScalar(x), SkFloatToScalar(y),
                 *GraphicsJNI::getNativePaint(env, paint));
     env->ReleaseStringChars(text, text_);
 }
コード例 #27
0
// http://crbug.com/472147
// RRect radii not properly scaled.
static void test_crbug_472147_actual(skiatest::Reporter* reporter) {
    auto surface(SkSurface::MakeRasterN32Premul(1000, 1000));
    SkCanvas* canvas = surface->getCanvas();
    SkPaint p;
    SkRect r = SkRect::MakeLTRB(-246.0f, 33.0f, 848.0f, 33554464.0f);
    SkVector radii[4] = {
        { 13.0f, 8.0f }, { 170.0f, 2.0 }, { 256.0f, 33554430.0f }, { 120.0f, 5.0f }
    };
    SkRRect rr;
    rr.setRectRadii(r, radii);
    canvas->clipRRect(rr);

    SkRect r2 = SkRect::MakeLTRB(0, 33, 1102, 33554464);
    canvas->drawRect(r2, p);
}
コード例 #28
0
static void movie_draw(JNIEnv* env, jobject movie, jobject canvas,
                       jfloat fx, jfloat fy, jobject jpaint) {
    NPE_CHECK_RETURN_VOID(env, movie);
    NPE_CHECK_RETURN_VOID(env, canvas);
    // its OK for paint to be null

    SkMovie* m = J2Movie(env, movie);
    SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas);
    SkScalar sx = SkFloatToScalar(fx);
    SkScalar sy = SkFloatToScalar(fy);
    const SkBitmap& b = m->bitmap();
    const SkPaint* p = jpaint ? GraphicsJNI::getNativePaint(env, jpaint) : NULL;

    c->drawBitmap(b, sx, sy, p);
}
static jboolean scrollRect(JNIEnv* env, jobject graphics2D, jobject canvas, jobject rect, int dx, int dy) {
    if (canvas == NULL) {
        jniThrowException(env, "java/lang/NullPointerException", NULL);
        return false;
    }
  
    SkIRect src, *srcPtr = NULL;
    if (NULL != rect) {
        GraphicsJNI::jrect_to_irect(env, rect, &src);
        srcPtr = &src;
    }
    SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas);
    const SkBitmap& bitmap = c->getDevice()->accessBitmap(true);
    return bitmap.scrollRect(srcPtr, dx, dy, NULL);
}
コード例 #30
0
// unused
static void TestNWayCanvasStateConsistency(
    skiatest::Reporter* reporter,
    const TestData& d,
    CanvasTestStep* testStep,
    const SkCanvas& referenceCanvas) {

    SkBitmap indirectStore1;
    createBitmap(&indirectStore1, 0xFFFFFFFF);
    SkCanvas indirectCanvas1(indirectStore1);

    SkBitmap indirectStore2;
    createBitmap(&indirectStore2, 0xFFFFFFFF);
    SkCanvas indirectCanvas2(indirectStore2);

    SkISize canvasSize = referenceCanvas.getDeviceSize();
    SkNWayCanvas nWayCanvas(canvasSize.width(), canvasSize.height());
    nWayCanvas.addCanvas(&indirectCanvas1);
    nWayCanvas.addCanvas(&indirectCanvas2);

    testStep->setAssertMessageFormat(kNWayDrawAssertMessageFormat);
    testStep->draw(&nWayCanvas, d, reporter);
    // Verify that the SkNWayCanvas reports consitent state
    testStep->setAssertMessageFormat(kNWayStateAssertMessageFormat);
    AssertCanvasStatesEqual(reporter, d, &nWayCanvas, &referenceCanvas, testStep);
    // Verify that the indirect canvases report consitent state
    testStep->setAssertMessageFormat(kNWayIndirect1StateAssertMessageFormat);
    AssertCanvasStatesEqual(reporter, d, &indirectCanvas1, &referenceCanvas, testStep);
    testStep->setAssertMessageFormat(kNWayIndirect2StateAssertMessageFormat);
    AssertCanvasStatesEqual(reporter, d, &indirectCanvas2, &referenceCanvas, testStep);
}