예제 #1
0
파일: SkSVGDevice.cpp 프로젝트: Jichao/skia
void SkSVGDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
                             int x, int y, const SkPaint& paint) {
    SkMatrix adjustedMatrix = *draw.fMatrix;
    adjustedMatrix.preTranslate(SkIntToScalar(x), SkIntToScalar(y));
    SkDraw adjustedDraw(draw);
    adjustedDraw.fMatrix = &adjustedMatrix;

    drawBitmapCommon(adjustedDraw, bitmap, paint);
}
예제 #2
0
bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix,
                                    const SkIRect* clipBounds,
                                    SkMask* mask, SkMask::CreateMode mode) const {
    SkASSERT(fLayers);
    if (fLayers->empty()) {
        return false;
    }

    if (SkMask::kJustRenderImage_CreateMode != mode) {
        if (!compute_bounds(*fLayers, path, matrix, clipBounds, &mask->fBounds))
            return false;
    }

    if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode) {
        mask->fFormat   = SkMask::kA8_Format;
        mask->fRowBytes = mask->fBounds.width();
        size_t size = mask->computeImageSize();
        if (0 == size) {
            return false;   // too big to allocate, abort
        }
        mask->fImage = SkMask::AllocImage(size);
        memset(mask->fImage, 0, size);
    }

    if (SkMask::kJustComputeBounds_CreateMode != mode) {
        SkBitmap        device;
        SkRasterClip    rectClip;
        SkDraw          draw;
        SkMatrix        translatedMatrix;  // this translates us to our local pixels
        SkMatrix        drawMatrix;        // this translates the path by each layer's offset

        rectClip.setRect(SkIRect::MakeWH(mask->fBounds.width(), mask->fBounds.height()));

        translatedMatrix = matrix;
        translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft),
                                       -SkIntToScalar(mask->fBounds.fTop));

        device.installMaskPixels(*mask);

        draw.fBitmap    = &device;
        draw.fMatrix    = &drawMatrix;
        draw.fRC        = &rectClip;
        draw.fClip      = &rectClip.bwRgn();
        // we set the matrixproc in the loop, as the matrix changes each time (potentially)

        SkDeque::F2BIter        iter(*fLayers);
        SkLayerRasterizer_Rec*  rec;

        while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
            drawMatrix = translatedMatrix;
            drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
            draw.drawPath(path, rec->fPaint);
        }
    }
    return true;
}
예제 #3
0
bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix,
                                    const SkIRect* clipBounds,
                                    SkMask* mask, SkMask::CreateMode mode)
{
    if (fLayers.empty())
        return false;

    if (SkMask::kJustRenderImage_CreateMode != mode)
    {
        if (!compute_bounds(fLayers, path, matrix, clipBounds, &mask->fBounds))
            return false;
    }

    if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode)
    {
        mask->fFormat   = SkMask::kA8_Format;
        mask->fRowBytes = SkToU16(mask->fBounds.width());
        mask->fImage = SkMask::AllocImage(mask->computeImageSize());
        memset(mask->fImage, 0, mask->computeImageSize());
    }

    if (SkMask::kJustComputeBounds_CreateMode != mode)
    {    
        SkBitmap device;
        SkDraw   draw;
        SkMatrix translatedMatrix;  // this translates us to our local pixels
        SkMatrix drawMatrix;        // this translates the path by each layer's offset
        SkRegion rectClip;
        
        rectClip.setRect(0, 0, mask->fBounds.width(), mask->fBounds.height());

        translatedMatrix = matrix;
        translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft),
                                       -SkIntToScalar(mask->fBounds.fTop));

        device.setConfig(SkBitmap::kA8_Config, mask->fBounds.width(), mask->fBounds.height(), mask->fRowBytes);
        device.setPixels(mask->fImage);

        draw.fBitmap    = &device;
        draw.fMatrix    = &drawMatrix;
        draw.fClip      = &rectClip;
        // we set the matrixproc in the loop, as the matrix changes each time (potentially)
        draw.fBounder   = NULL;
        
        SkDeque::Iter           iter(fLayers);
        SkLayerRasterizer_Rec*  rec;

        while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
            drawMatrix = translatedMatrix;
            drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
            draw.drawPath(path, rec->fPaint);
        }
    }
    return true;
}
예제 #4
0
static SkBitmap make_bmp(int w, int h) {
    SkBitmap bmp;
    bmp.allocN32Pixels(w, h, true);

    SkCanvas canvas(bmp);
    SkScalar wScalar = SkIntToScalar(w);
    SkScalar hScalar = SkIntToScalar(h);

    SkPoint     pt = { wScalar / 2, hScalar / 2 };

    SkScalar    radius = 3 * SkMaxScalar(wScalar, hScalar);

    SkColor     colors[] = { SK_ColorDKGRAY, 0xFF222255,
                             0xFF331133, 0xFF884422,
                             0xFF000022, SK_ColorWHITE,
                             0xFFAABBCC};

    SkScalar    pos[] = {0,
                         SK_Scalar1 / 6,
                         2 * SK_Scalar1 / 6,
                         3 * SK_Scalar1 / 6,
                         4 * SK_Scalar1 / 6,
                         5 * SK_Scalar1 / 6,
                         SK_Scalar1};

    SkPaint paint;
    SkRect rect = SkRect::MakeWH(wScalar, hScalar);
    SkMatrix mat = SkMatrix::I();
    for (int i = 0; i < 4; ++i) {
        paint.setShader(SkGradientShader::CreateRadial(
                        pt, radius,
                        colors, pos,
                        SK_ARRAY_COUNT(colors),
                        SkShader::kRepeat_TileMode,
                        0, &mat))->unref();
        canvas.drawRect(rect, paint);
        rect.inset(wScalar / 8, hScalar / 8);
        mat.preTranslate(6 * wScalar, 6 * hScalar);
        mat.postScale(SK_Scalar1 / 3, SK_Scalar1 / 3);
    }

    paint.setAntiAlias(true);
    sk_tool_utils::set_portable_typeface(&paint);
    paint.setTextSize(wScalar / 2.2f);
    paint.setShader(0);
    paint.setColor(SK_ColorLTGRAY);
    static const char kTxt[] = "Skia";
    SkPoint texPos = { wScalar / 17, hScalar / 2 + paint.getTextSize() / 2.5f };
    canvas.drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, texPos.fX, texPos.fY, paint);
    paint.setColor(SK_ColorBLACK);
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setStrokeWidth(SK_Scalar1);
    canvas.drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, texPos.fX, texPos.fY, paint);
    return bmp;
}
예제 #5
0
void GrLayerHoister::DrawLayersToAtlas(GrContext* context,
                                       const SkTDArray<GrHoistedLayer>& atlased) {
    if (atlased.count() > 0) {
        // All the atlased layers are rendered into the same GrTexture
        SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
                                        atlased[0].fLayer->texture()->asRenderTarget(), NULL));

        SkCanvas* atlasCanvas = surface->getCanvas();

        SkPaint clearPaint;
        clearPaint.setColor(SK_ColorTRANSPARENT);
        clearPaint.setXfermode(SkXfermode::Create(SkXfermode::kSrc_Mode))->unref();

        for (int i = 0; i < atlased.count(); ++i) {
            const GrCachedLayer* layer = atlased[i].fLayer;
            const SkPicture* pict = atlased[i].fPicture;
            const SkIPoint offset = atlased[i].fOffset;
            SkDEBUGCODE(const SkPaint* layerPaint = layer->paint();)

            SkASSERT(!layerPaint || !layerPaint->getImageFilter());

            atlasCanvas->save();

            // Add a rect clip to make sure the rendering doesn't
            // extend beyond the boundaries of the atlased sub-rect
            SkRect bound = SkRect::MakeXYWH(SkIntToScalar(layer->rect().fLeft),
                                            SkIntToScalar(layer->rect().fTop),
                                            SkIntToScalar(layer->rect().width()),
                                            SkIntToScalar(layer->rect().height()));
            atlasCanvas->clipRect(bound);

            // Since 'clear' doesn't respect the clip we need to draw a rect
            atlasCanvas->drawRect(bound, clearPaint);

            // '-offset' maps the layer's top/left to the origin.
            // Since this layer is atlased, the top/left corner needs
            // to be offset to the correct location in the backing texture.
            SkMatrix initialCTM;
            initialCTM.setTranslate(SkIntToScalar(-offset.fX), SkIntToScalar(-offset.fY));
            initialCTM.preTranslate(bound.fLeft, bound.fTop);
            initialCTM.preConcat(atlased[i].fPreMat);

            atlasCanvas->setMatrix(initialCTM);
            atlasCanvas->concat(atlased[i].fLocalMat);

            SkRecordPartialDraw(*pict->fRecord.get(), atlasCanvas, bound,
                                layer->start() + 1, layer->stop(), initialCTM);

            atlasCanvas->restore();
        }

        atlasCanvas->flush();
    }
예제 #6
0
void GrLayerHoister::DrawLayersToAtlas(GrContext* context,
                                       const SkTDArray<GrHoistedLayer>& atlased) {
    if (atlased.count() > 0) {
        // All the atlased layers are rendered into the same GrTexture
        SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
        SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
                                        atlased[0].fLayer->texture()->asRenderTarget(), &props));

        SkCanvas* atlasCanvas = surface->getCanvas();

        for (int i = 0; i < atlased.count(); ++i) {
            const GrCachedLayer* layer = atlased[i].fLayer;
            const SkBigPicture* pict = atlased[i].fPicture->asSkBigPicture();
            if (!pict) {
                // TODO: can we assume / assert this?
                continue;
            }
            const SkIPoint offset = SkIPoint::Make(layer->srcIR().fLeft, layer->srcIR().fTop);
            SkDEBUGCODE(const SkPaint* layerPaint = layer->paint();)

            SkASSERT(!layerPaint || !layerPaint->getImageFilter());
            SkASSERT(!layer->filter());

            atlasCanvas->save();

            // Add a rect clip to make sure the rendering doesn't
            // extend beyond the boundaries of the atlased sub-rect
            const SkRect bound = SkRect::Make(layer->rect());
            atlasCanvas->clipRect(bound);
            atlasCanvas->clear(0);

            // '-offset' maps the layer's top/left to the origin.
            // Since this layer is atlased, the top/left corner needs
            // to be offset to the correct location in the backing texture.
            SkMatrix initialCTM;
            initialCTM.setTranslate(SkIntToScalar(-offset.fX), SkIntToScalar(-offset.fY));
            initialCTM.preTranslate(bound.fLeft, bound.fTop);
            initialCTM.preConcat(atlased[i].fPreMat);

            atlasCanvas->setMatrix(initialCTM);
            atlasCanvas->concat(atlased[i].fLocalMat);

            pict->partialPlayback(atlasCanvas, layer->start() + 1, layer->stop(), initialCTM);
            atlasCanvas->restore();
        }

        atlasCanvas->flush();
    }
예제 #7
0
////////////////////////////////////////////////////////////////////////////////
// set up the draw state to enable the aa clipping mask. Besides setting up the
// stage matrix this also alters the vertex layout
static const GrFragmentProcessor* create_fp_for_mask(GrTexture* result, const SkIRect &devBound) {
    SkMatrix mat;
    // We use device coords to compute the texture coordinates. We set our matrix to be a
    // translation to the devBound, and then a scaling matrix to normalized coords.
    mat.setIDiv(result->width(), result->height());
    mat.preTranslate(SkIntToScalar(-devBound.fLeft),
                     SkIntToScalar(-devBound.fTop));

    SkIRect domainTexels = SkIRect::MakeWH(devBound.width(), devBound.height());
    return GrTextureDomainEffect::Create(result,
                                         mat,
                                         GrTextureDomain::MakeTexelDomain(result, domainTexels),
                                         GrTextureDomain::kDecal_Mode,
                                         GrTextureParams::kNone_FilterMode,
                                         kDevice_GrCoordSet);
}
예제 #8
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void draw(SkCanvas* canvas) {
    SkPaint paint;
    SkPictureRecorder recorder;
    SkCanvas* recordingCanvas = recorder.beginRecording(50, 50);
    for (auto color : { SK_ColorRED, SK_ColorBLUE, 0xff007f00 } ) {
        paint.setColor(color);
        recordingCanvas->drawRect({10, 10, 30, 40}, paint);
        recordingCanvas->translate(10, 10);
        recordingCanvas->scale(1.2f, 1.4f);
    }
    sk_sp<SkPicture> playback = recorder.finishRecordingAsPicture();
    const SkPicture* playbackPtr = playback.get();
    SkMatrix matrix;
    matrix.reset();
    for (auto alpha : { 70, 140, 210 } ) {
    paint.setAlpha(alpha);
    canvas->drawPicture(playbackPtr, &matrix, &paint);
    matrix.preTranslate(70, 70);
    }
}
예제 #9
0
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
        GrDrawTarget* target,
        const GrIRect& rect) {
    GrDrawState* drawState = target->drawState();

    GrDrawState::AutoDeviceCoordDraw adcd(drawState);
    if (!adcd.succeeded()) {
        return;
    }
    enum {
        // the SW path renderer shares this stage with glyph
        // rendering (kGlyphMaskStage in GrTextContext)
        // && edge rendering (kEdgeEffectStage in GrContext)
        kPathMaskStage = GrPaint::kTotalStages,
    };

    GrRect dstRect = GrRect::MakeLTRB(
                         SK_Scalar1 * rect.fLeft,
                         SK_Scalar1 * rect.fTop,
                         SK_Scalar1 * rect.fRight,
                         SK_Scalar1 * rect.fBottom);

    // We want to use device coords to compute the texture coordinates. We set our matrix to be
    // equal to the view matrix followed by a translation so that the top-left of the device bounds
    // maps to 0,0, and then a scaling matrix to normalized coords. We apply this matrix to the
    // vertex positions rather than local coords.
    SkMatrix maskMatrix;
    maskMatrix.setIDiv(texture->width(), texture->height());
    maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
    maskMatrix.preConcat(drawState->getViewMatrix());

    GrAssert(!drawState->isStageEnabled(kPathMaskStage));
    drawState->setEffect(kPathMaskStage,
                         GrSimpleTextureEffect::Create(texture,
                                 maskMatrix,
                                 false,
                                 GrEffect::kPosition_CoordsType))->unref();

    target->drawSimpleRect(dstRect);
    drawState->disableStage(kPathMaskStage);
}
예제 #10
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static void morphpoints(SkPoint dst[], const SkPoint src[], int count,
                        SkPathMeasure& meas, SkScalar dist) {
    for (int i = 0; i < count; i++) {
        SkPoint pos;
        SkVector tangent;
        
        SkScalar sx = src[i].fX;
        SkScalar sy = src[i].fY;
        
        meas.getPosTan(dist + sx, &pos, &tangent);
        
        SkMatrix    matrix;
        SkPoint     pt;
        
        pt.set(sx, sy);
        matrix.setSinCos(tangent.fY, tangent.fX, 0, 0);
        matrix.preTranslate(-sx, 0);
        matrix.postTranslate(pos.fX, pos.fY);
        matrix.mapPoints(&dst[i], &pt, 1);
    }
}
예제 #11
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static bool compute_bounds(const SkDeque& layers, const SkPath& path,
                           const SkMatrix& matrix,
                           const SkIRect* clipBounds, SkIRect* bounds) {
    SkDeque::F2BIter        iter(layers);
    SkLayerRasterizer_Rec*  rec;

    bounds->set(SK_MaxS32, SK_MaxS32, SK_MinS32, SK_MinS32);

    while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
        const SkPaint&  paint = rec->fPaint;
        SkPath          fillPath, devPath;
        const SkPath*   p = &path;

        if (paint.getPathEffect() || paint.getStyle() != SkPaint::kFill_Style) {
            paint.getFillPath(path, &fillPath);
            p = &fillPath;
        }
        if (p->isEmpty()) {
            continue;
        }

        // apply the matrix and offset
        {
            SkMatrix m = matrix;
            m.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
            p->transform(m, &devPath);
        }

        SkMask  mask;
        if (!SkDraw::DrawToMask(devPath, clipBounds, paint.getMaskFilter(),
                                &matrix, &mask,
                                SkMask::kJustComputeBounds_CreateMode,
                                SkPaint::kFill_Style)) {
            return false;
        }

        bounds->join(mask.fBounds);
    }
    return true;
}
예제 #12
0
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
                                              GrDrawContext* drawContext,
                                              const GrPaint* paint,
                                              const GrUserStencilSettings* userStencilSettings,
                                              const GrClip& clip,
                                              GrColor color,
                                              const SkMatrix& viewMatrix,
                                              const SkIRect& rect) {
    SkMatrix invert;
    if (!viewMatrix.invert(&invert)) {
        return;
    }

    SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
                                      SK_Scalar1 * rect.fTop,
                                      SK_Scalar1 * rect.fRight,
                                      SK_Scalar1 * rect.fBottom);

    // We use device coords to compute the texture coordinates. We take the device coords and apply
    // a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
    // matrix to normalized coords.
    SkMatrix maskMatrix;
    maskMatrix.setIDiv(texture->width(), texture->height());
    maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));

    GrPipelineBuilder pipelineBuilder(*paint, drawContext->isUnifiedMultisampled());
    pipelineBuilder.setRenderTarget(drawContext->accessRenderTarget());
    pipelineBuilder.setUserStencil(userStencilSettings);

    pipelineBuilder.addCoverageFragmentProcessor(
                         GrSimpleTextureEffect::Create(texture,
                                                       maskMatrix,
                                                       GrTextureParams::kNone_FilterMode,
                                                       kDevice_GrCoordSet))->unref();

    SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
                                                                        dstRect, nullptr, &invert));
    drawContext->drawBatch(pipelineBuilder, clip, batch);
}
예제 #13
0
파일: SkDevice.cpp 프로젝트: fsy351/skia
void SkBaseDevice::drawTextBlob(const SkDraw& draw, const SkTextBlob* blob, SkScalar x, SkScalar y,
                                const SkPaint &paint) {

    SkMatrix localMatrix;
    SkDraw localDraw(draw);

    if (x || y) {
        localMatrix = *draw.fMatrix;
        localMatrix.preTranslate(x, y);
        localDraw.fMatrix = &localMatrix;
    }

    SkPaint runPaint = paint;
    SkTextBlob::RunIterator it(blob);
    while (!it.done()) {
        size_t textLen = it.glyphCount() * sizeof(uint16_t);
        const SkPoint& offset = it.offset();
        // applyFontToPaint() always overwrites the exact same attributes,
        // so it is safe to not re-seed the paint.
        it.applyFontToPaint(&runPaint);

        switch (it.positioning()) {
        case SkTextBlob::kDefault_Positioning:
            this->drawText(localDraw, it.glyphs(), textLen, offset.x(), offset.y(), runPaint);
            break;
        case SkTextBlob::kHorizontal_Positioning:
        case SkTextBlob::kFull_Positioning:
            this->drawPosText(localDraw, it.glyphs(), textLen, it.pos(), offset.y(),
                              SkTextBlob::ScalarsPerGlyph(it.positioning()), runPaint);
            break;
        default:
            SkFAIL("unhandled positioning mode");
        }

        it.next();
    }
}
예제 #14
0
SkPDFImageShader::SkPDFImageShader(SkPDFShader::State* state) : fState(state) {
    fState.get()->fImage.lockPixels();

    SkMatrix finalMatrix = fState.get()->fCanvasTransform;
    finalMatrix.preConcat(fState.get()->fShaderTransform);
    SkRect surfaceBBox;
    surfaceBBox.set(fState.get()->fBBox);
    transformBBox(finalMatrix, &surfaceBBox);

    SkMatrix unflip;
    unflip.setTranslate(0, SkScalarRound(surfaceBBox.height()));
    unflip.preScale(SK_Scalar1, -SK_Scalar1);
    SkISize size = SkISize::Make(SkScalarRound(surfaceBBox.width()),
                                 SkScalarRound(surfaceBBox.height()));
    SkPDFDevice pattern(size, size, unflip);
    SkCanvas canvas(&pattern);
    canvas.translate(-surfaceBBox.fLeft, -surfaceBBox.fTop);
    finalMatrix.preTranslate(surfaceBBox.fLeft, surfaceBBox.fTop);

    const SkBitmap* image = &fState.get()->fImage;
    int width = image->width();
    int height = image->height();
    SkShader::TileMode tileModes[2];
    tileModes[0] = fState.get()->fImageTileModes[0];
    tileModes[1] = fState.get()->fImageTileModes[1];

    canvas.drawBitmap(*image, 0, 0);
    SkRect patternBBox = SkRect::MakeXYWH(-surfaceBBox.fLeft, -surfaceBBox.fTop,
                                          width, height);

    // Tiling is implied.  First we handle mirroring.
    if (tileModes[0] == SkShader::kMirror_TileMode) {
        SkMatrix xMirror;
        xMirror.setScale(-1, 1);
        xMirror.postTranslate(2 * width, 0);
        canvas.drawBitmapMatrix(*image, xMirror);
        patternBBox.fRight += width;
    }
    if (tileModes[1] == SkShader::kMirror_TileMode) {
        SkMatrix yMirror;
        yMirror.setScale(SK_Scalar1, -SK_Scalar1);
        yMirror.postTranslate(0, 2 * height);
        canvas.drawBitmapMatrix(*image, yMirror);
        patternBBox.fBottom += height;
    }
    if (tileModes[0] == SkShader::kMirror_TileMode &&
            tileModes[1] == SkShader::kMirror_TileMode) {
        SkMatrix mirror;
        mirror.setScale(-1, -1);
        mirror.postTranslate(2 * width, 2 * height);
        canvas.drawBitmapMatrix(*image, mirror);
    }

    // Then handle Clamping, which requires expanding the pattern canvas to
    // cover the entire surfaceBBox.

    // If both x and y are in clamp mode, we start by filling in the corners.
    // (Which are just a rectangles of the corner colors.)
    if (tileModes[0] == SkShader::kClamp_TileMode &&
            tileModes[1] == SkShader::kClamp_TileMode) {
        SkPaint paint;
        SkRect rect;
        rect = SkRect::MakeLTRB(surfaceBBox.fLeft, surfaceBBox.fTop, 0, 0);
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(0, 0));
            canvas.drawRect(rect, paint);
        }

        rect = SkRect::MakeLTRB(width, surfaceBBox.fTop, surfaceBBox.fRight, 0);
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(width - 1, 0));
            canvas.drawRect(rect, paint);
        }

        rect = SkRect::MakeLTRB(width, height, surfaceBBox.fRight,
                                surfaceBBox.fBottom);
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(width - 1, height - 1));
            canvas.drawRect(rect, paint);
        }

        rect = SkRect::MakeLTRB(surfaceBBox.fLeft, height, 0,
                                surfaceBBox.fBottom);
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(0, height - 1));
            canvas.drawRect(rect, paint);
        }
    }

    // Then expand the left, right, top, then bottom.
    if (tileModes[0] == SkShader::kClamp_TileMode) {
        SkIRect subset = SkIRect::MakeXYWH(0, 0, 1, height);
        if (surfaceBBox.fLeft < 0) {
            SkBitmap left;
            SkAssertResult(image->extractSubset(&left, subset));

            SkMatrix leftMatrix;
            leftMatrix.setScale(-surfaceBBox.fLeft, 1);
            leftMatrix.postTranslate(surfaceBBox.fLeft, 0);
            canvas.drawBitmapMatrix(left, leftMatrix);

            if (tileModes[1] == SkShader::kMirror_TileMode) {
                leftMatrix.postScale(SK_Scalar1, -SK_Scalar1);
                leftMatrix.postTranslate(0, 2 * height);
                canvas.drawBitmapMatrix(left, leftMatrix);
            }
            patternBBox.fLeft = 0;
        }

        if (surfaceBBox.fRight > width) {
            SkBitmap right;
            subset.offset(width - 1, 0);
            SkAssertResult(image->extractSubset(&right, subset));

            SkMatrix rightMatrix;
            rightMatrix.setScale(surfaceBBox.fRight - width, 1);
            rightMatrix.postTranslate(width, 0);
            canvas.drawBitmapMatrix(right, rightMatrix);

            if (tileModes[1] == SkShader::kMirror_TileMode) {
                rightMatrix.postScale(SK_Scalar1, -SK_Scalar1);
                rightMatrix.postTranslate(0, 2 * height);
                canvas.drawBitmapMatrix(right, rightMatrix);
            }
            patternBBox.fRight = surfaceBBox.width();
        }
    }

    if (tileModes[1] == SkShader::kClamp_TileMode) {
        SkIRect subset = SkIRect::MakeXYWH(0, 0, width, 1);
        if (surfaceBBox.fTop < 0) {
            SkBitmap top;
            SkAssertResult(image->extractSubset(&top, subset));

            SkMatrix topMatrix;
            topMatrix.setScale(SK_Scalar1, -surfaceBBox.fTop);
            topMatrix.postTranslate(0, surfaceBBox.fTop);
            canvas.drawBitmapMatrix(top, topMatrix);

            if (tileModes[0] == SkShader::kMirror_TileMode) {
                topMatrix.postScale(-1, 1);
                topMatrix.postTranslate(2 * width, 0);
                canvas.drawBitmapMatrix(top, topMatrix);
            }
            patternBBox.fTop = 0;
        }

        if (surfaceBBox.fBottom > height) {
            SkBitmap bottom;
            subset.offset(0, height - 1);
            SkAssertResult(image->extractSubset(&bottom, subset));

            SkMatrix bottomMatrix;
            bottomMatrix.setScale(SK_Scalar1, surfaceBBox.fBottom - height);
            bottomMatrix.postTranslate(0, height);
            canvas.drawBitmapMatrix(bottom, bottomMatrix);

            if (tileModes[0] == SkShader::kMirror_TileMode) {
                bottomMatrix.postScale(-1, 1);
                bottomMatrix.postTranslate(2 * width, 0);
                canvas.drawBitmapMatrix(bottom, bottomMatrix);
            }
            patternBBox.fBottom = surfaceBBox.height();
        }
    }

    SkRefPtr<SkPDFArray> patternBBoxArray = new SkPDFArray;
    patternBBoxArray->unref();  // SkRefPtr and new both took a reference.
    patternBBoxArray->reserve(4);
    patternBBoxArray->appendScalar(patternBBox.fLeft);
    patternBBoxArray->appendScalar(patternBBox.fTop);
    patternBBoxArray->appendScalar(patternBBox.fRight);
    patternBBoxArray->appendScalar(patternBBox.fBottom);

    // Put the canvas into the pattern stream (fContent).
    SkRefPtr<SkStream> content = pattern.content();
    content->unref();  // SkRefPtr and content() both took a reference.
    pattern.getResources(&fResources);

    setData(content.get());
    insertName("Type", "Pattern");
    insertInt("PatternType", 1);
    insertInt("PaintType", 1);
    insertInt("TilingType", 1);
    insert("BBox", patternBBoxArray.get());
    insertScalar("XStep", patternBBox.width());
    insertScalar("YStep", patternBBox.height());
    insert("Resources", pattern.getResourceDict());
    insert("Matrix", SkPDFUtils::MatrixToArray(finalMatrix))->unref();

    fState.get()->fImage.unlockPixels();
}
예제 #15
0
sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* source,
                                                             const Context& ctx,
                                                             SkIPoint* offset) const {
    SkIPoint colorOffset = SkIPoint::Make(0, 0);
    sk_sp<SkSpecialImage> color(this->filterInput(1, source, ctx, &colorOffset));
    if (!color) {
        return nullptr;
    }

    SkIPoint displOffset = SkIPoint::Make(0, 0);
    sk_sp<SkSpecialImage> displ(this->filterInput(0, source, ctx, &displOffset));
    if (!displ) {
        return nullptr;
    }

    const SkIRect srcBounds = SkIRect::MakeXYWH(colorOffset.x(), colorOffset.y(),
                                                color->width(), color->height());

    // Both paths do bounds checking on color pixel access, we don't need to
    // pad the color bitmap to bounds here.
    SkIRect bounds;
    if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
        return nullptr;
    }

    SkIRect displBounds;
    displ = this->applyCropRect(ctx, displ.get(), &displOffset, &displBounds);
    if (!displ) {
        return nullptr;
    }

    if (!bounds.intersect(displBounds)) {
        return nullptr;
    }

    const SkIRect colorBounds = bounds.makeOffset(-colorOffset.x(), -colorOffset.y());

    SkVector scale = SkVector::Make(fScale, fScale);
    ctx.ctm().mapVectors(&scale, 1);

#if SK_SUPPORT_GPU
    if (source->isTextureBacked()) {
        GrContext* context = source->getContext();

        sk_sp<GrTexture> colorTexture(color->asTextureRef(context));
        sk_sp<GrTexture> displTexture(displ->asTextureRef(context));
        if (!colorTexture || !displTexture) {
            return nullptr;
        }

        GrSurfaceDesc desc;
        desc.fFlags = kRenderTarget_GrSurfaceFlag;
        desc.fWidth = bounds.width();
        desc.fHeight = bounds.height();
        desc.fConfig = kSkia8888_GrPixelConfig;

        SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
        if (!dst) {
            return nullptr;
        }

        GrPaint paint;
        SkMatrix offsetMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(displTexture.get());
        offsetMatrix.preTranslate(SkIntToScalar(colorOffset.fX - displOffset.fX),
                                  SkIntToScalar(colorOffset.fY - displOffset.fY));

        paint.addColorFragmentProcessor(
            GrDisplacementMapEffect::Create(fXChannelSelector,
                                            fYChannelSelector,
                                            scale,
                                            displTexture.get(),
                                            offsetMatrix,
                                            colorTexture.get(),
                                            SkISize::Make(color->width(),
                                                          color->height())))->unref();
        paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
        SkMatrix matrix;
        matrix.setTranslate(-SkIntToScalar(colorBounds.x()), -SkIntToScalar(colorBounds.y()));

        SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
        if (!drawContext) {
            return nullptr;
        }

        drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(colorBounds));

        offset->fX = bounds.left();
        offset->fY = bounds.top();
        return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                           kNeedNewImageUniqueID_SpecialImage,
                                           dst);
    }
#endif

    SkBitmap colorBM, displBM;

    if (!color->getROPixels(&colorBM) || !displ->getROPixels(&displBM)) {
        return nullptr;
    }

    if ((colorBM.colorType() != kN32_SkColorType) ||
        (displBM.colorType() != kN32_SkColorType)) {
        return nullptr;
    }

    SkAutoLockPixels colorLock(colorBM), displLock(displBM);
    if (!colorBM.getPixels() || !displBM.getPixels()) {
        return nullptr;
    }

    SkImageInfo info = SkImageInfo::MakeN32(bounds.width(), bounds.height(),
                                            colorBM.alphaType());

    SkBitmap dst;
    if (!dst.tryAllocPixels(info)) {
        return nullptr;
    }

    SkAutoLockPixels dstLock(dst);

    computeDisplacement(fXChannelSelector, fYChannelSelector, scale, &dst,
                        displBM, colorOffset - displOffset, colorBM, colorBounds);

    offset->fX = bounds.left();
    offset->fY = bounds.top();
    return SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                          dst);
}
예제 #16
0
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
                                           const SkBitmap& src,
                                           const Context& ctx,
                                           SkBitmap* result,
                                           SkIPoint* offset) const {
    SkBitmap background = src;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (getInput(0) && !getInput(0)->getInputResultGPU(proxy, src, ctx, &background,
                                                       &backgroundOffset)) {
        return onFilterImage(proxy, src, ctx, result, offset);
    }
    GrTexture* backgroundTex = background.getTexture();
    SkBitmap foreground = src;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (getInput(1) && !getInput(1)->getInputResultGPU(proxy, src, ctx, &foreground,
                                                       &foregroundOffset)) {
        return onFilterImage(proxy, src, ctx, result, offset);
    }
    GrTexture* foregroundTex = foreground.getTexture();
    GrContext* context = foregroundTex->getContext();

    GrEffect* xferEffect = NULL;

    GrTextureDesc desc;
    desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
    desc.fWidth = src.width();
    desc.fHeight = src.height();
    desc.fConfig = kSkia8888_GrPixelConfig;

    GrAutoScratchTexture ast(context, desc);
    if (NULL == ast.texture()) {
        return false;
    }
    SkAutoTUnref<GrTexture> dst(ast.detach());

    GrContext::AutoRenderTarget art(context, dst->asRenderTarget());

    if (!fMode || !fMode->asNewEffect(&xferEffect, backgroundTex)) {
        // canFilterImageGPU() should've taken care of this
        SkASSERT(false);
        return false;
    }

    SkMatrix foregroundMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(foregroundTex);
    foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
                                  SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));


    SkRect srcRect;
    src.getBounds(&srcRect);

    GrPaint paint;
    paint.addColorTextureEffect(foregroundTex, foregroundMatrix);
    paint.addColorEffect(xferEffect)->unref();
    context->drawRect(paint, srcRect);

    offset->fX = backgroundOffset.fX;
    offset->fY = backgroundOffset.fY;
    WrapTexture(dst, src.width(), src.height(), result);
    return true;
}
예제 #17
0
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
                                           const SkBitmap& src,
                                           const Context& ctx,
                                           SkBitmap* result,
                                           SkIPoint* offset) const {
    SkBitmap background = src;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (this->getInput(0) && 
        !this->getInput(0)->getInputResultGPU(proxy, src, ctx, &background, &backgroundOffset)) {
        return this->onFilterImage(proxy, src, ctx, result, offset);
    }

    GrTexture* backgroundTex = background.getTexture();
    if (NULL == backgroundTex) {
        SkASSERT(false);
        return false;
    }

    SkBitmap foreground = src;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (this->getInput(1) && 
        !this->getInput(1)->getInputResultGPU(proxy, src, ctx, &foreground, &foregroundOffset)) {
        return this->onFilterImage(proxy, src, ctx, result, offset);
    }
    GrTexture* foregroundTex = foreground.getTexture();
    GrContext* context = foregroundTex->getContext();

    GrFragmentProcessor* xferProcessor = NULL;

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = src.width();
    desc.fHeight = src.height();
    desc.fConfig = kSkia8888_GrPixelConfig;
    SkAutoTUnref<GrTexture> dst(context->textureProvider()->refScratchTexture(
        desc, GrTextureProvider::kApprox_ScratchTexMatch));
    if (!dst) {
        return false;
    }

    GrPaint paint;
    if (!fMode || !fMode->asFragmentProcessor(&xferProcessor, paint.getProcessorDataManager(),
                                              backgroundTex)) {
        // canFilterImageGPU() should've taken care of this
        SkASSERT(false);
        return false;
    }

    SkMatrix foregroundMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(foregroundTex);
    foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
                                  SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));


    SkRect srcRect;
    src.getBounds(&srcRect);

    SkAutoTUnref<GrFragmentProcessor> foregroundDomain(GrTextureDomainEffect::Create(
        paint.getProcessorDataManager(),
        foregroundTex, foregroundMatrix,
        GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
        GrTextureDomain::kDecal_Mode,
        GrTextureParams::kNone_FilterMode)
    );

    paint.addColorProcessor(foregroundDomain.get());
    paint.addColorProcessor(xferProcessor)->unref();

    GrDrawContext* drawContext = context->drawContext();
    if (!drawContext) {
        return false;
    }

    drawContext->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, 
                          SkMatrix::I(), srcRect);

    offset->fX = backgroundOffset.fX;
    offset->fY = backgroundOffset.fY;
    WrapTexture(dst, src.width(), src.height(), result);
    return true;
}
예제 #18
0
파일: SkPDFShader.cpp 프로젝트: Dnnono/skia
SkPDFImageShader* SkPDFImageShader::Create(
        SkPDFCanon* canon,
        SkScalar dpi,
        SkAutoTDelete<SkPDFShader::State>* autoState) {
    const SkPDFShader::State& state = **autoState;

    state.fImage.lockPixels();

    // The image shader pattern cell will be drawn into a separate device
    // in pattern cell space (no scaling on the bitmap, though there may be
    // translations so that all content is in the device, coordinates > 0).

    // Map clip bounds to shader space to ensure the device is large enough
    // to handle fake clamping.
    SkMatrix finalMatrix = state.fCanvasTransform;
    finalMatrix.preConcat(state.fShaderTransform);
    SkRect deviceBounds;
    deviceBounds.set(state.fBBox);
    if (!inverse_transform_bbox(finalMatrix, &deviceBounds)) {
        return NULL;
    }

    const SkBitmap* image = &state.fImage;
    SkRect bitmapBounds;
    image->getBounds(&bitmapBounds);

    // For tiling modes, the bounds should be extended to include the bitmap,
    // otherwise the bitmap gets clipped out and the shader is empty and awful.
    // For clamp modes, we're only interested in the clip region, whether
    // or not the main bitmap is in it.
    SkShader::TileMode tileModes[2];
    tileModes[0] = state.fImageTileModes[0];
    tileModes[1] = state.fImageTileModes[1];
    if (tileModes[0] != SkShader::kClamp_TileMode ||
            tileModes[1] != SkShader::kClamp_TileMode) {
        deviceBounds.join(bitmapBounds);
    }

    SkISize size = SkISize::Make(SkScalarRoundToInt(deviceBounds.width()),
                                 SkScalarRoundToInt(deviceBounds.height()));
    SkAutoTUnref<SkPDFDevice> patternDevice(
            SkPDFDevice::CreateUnflipped(size, dpi, canon));
    SkCanvas canvas(patternDevice.get());

    SkRect patternBBox;
    image->getBounds(&patternBBox);

    // Translate the canvas so that the bitmap origin is at (0, 0).
    canvas.translate(-deviceBounds.left(), -deviceBounds.top());
    patternBBox.offset(-deviceBounds.left(), -deviceBounds.top());
    // Undo the translation in the final matrix
    finalMatrix.preTranslate(deviceBounds.left(), deviceBounds.top());

    // If the bitmap is out of bounds (i.e. clamp mode where we only see the
    // stretched sides), canvas will clip this out and the extraneous data
    // won't be saved to the PDF.
    canvas.drawBitmap(*image, 0, 0);

    SkScalar width = SkIntToScalar(image->width());
    SkScalar height = SkIntToScalar(image->height());

    // Tiling is implied.  First we handle mirroring.
    if (tileModes[0] == SkShader::kMirror_TileMode) {
        SkMatrix xMirror;
        xMirror.setScale(-1, 1);
        xMirror.postTranslate(2 * width, 0);
        drawBitmapMatrix(&canvas, *image, xMirror);
        patternBBox.fRight += width;
    }
    if (tileModes[1] == SkShader::kMirror_TileMode) {
        SkMatrix yMirror;
        yMirror.setScale(SK_Scalar1, -SK_Scalar1);
        yMirror.postTranslate(0, 2 * height);
        drawBitmapMatrix(&canvas, *image, yMirror);
        patternBBox.fBottom += height;
    }
    if (tileModes[0] == SkShader::kMirror_TileMode &&
            tileModes[1] == SkShader::kMirror_TileMode) {
        SkMatrix mirror;
        mirror.setScale(-1, -1);
        mirror.postTranslate(2 * width, 2 * height);
        drawBitmapMatrix(&canvas, *image, mirror);
    }

    // Then handle Clamping, which requires expanding the pattern canvas to
    // cover the entire surfaceBBox.

    // If both x and y are in clamp mode, we start by filling in the corners.
    // (Which are just a rectangles of the corner colors.)
    if (tileModes[0] == SkShader::kClamp_TileMode &&
            tileModes[1] == SkShader::kClamp_TileMode) {
        SkPaint paint;
        SkRect rect;
        rect = SkRect::MakeLTRB(deviceBounds.left(), deviceBounds.top(), 0, 0);
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(0, 0));
            canvas.drawRect(rect, paint);
        }

        rect = SkRect::MakeLTRB(width, deviceBounds.top(),
                                deviceBounds.right(), 0);
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(image->width() - 1, 0));
            canvas.drawRect(rect, paint);
        }

        rect = SkRect::MakeLTRB(width, height,
                                deviceBounds.right(), deviceBounds.bottom());
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(image->width() - 1,
                                           image->height() - 1));
            canvas.drawRect(rect, paint);
        }

        rect = SkRect::MakeLTRB(deviceBounds.left(), height,
                                0, deviceBounds.bottom());
        if (!rect.isEmpty()) {
            paint.setColor(image->getColor(0, image->height() - 1));
            canvas.drawRect(rect, paint);
        }
    }

    // Then expand the left, right, top, then bottom.
    if (tileModes[0] == SkShader::kClamp_TileMode) {
        SkIRect subset = SkIRect::MakeXYWH(0, 0, 1, image->height());
        if (deviceBounds.left() < 0) {
            SkBitmap left;
            SkAssertResult(image->extractSubset(&left, subset));

            SkMatrix leftMatrix;
            leftMatrix.setScale(-deviceBounds.left(), 1);
            leftMatrix.postTranslate(deviceBounds.left(), 0);
            drawBitmapMatrix(&canvas, left, leftMatrix);

            if (tileModes[1] == SkShader::kMirror_TileMode) {
                leftMatrix.postScale(SK_Scalar1, -SK_Scalar1);
                leftMatrix.postTranslate(0, 2 * height);
                drawBitmapMatrix(&canvas, left, leftMatrix);
            }
            patternBBox.fLeft = 0;
        }

        if (deviceBounds.right() > width) {
            SkBitmap right;
            subset.offset(image->width() - 1, 0);
            SkAssertResult(image->extractSubset(&right, subset));

            SkMatrix rightMatrix;
            rightMatrix.setScale(deviceBounds.right() - width, 1);
            rightMatrix.postTranslate(width, 0);
            drawBitmapMatrix(&canvas, right, rightMatrix);

            if (tileModes[1] == SkShader::kMirror_TileMode) {
                rightMatrix.postScale(SK_Scalar1, -SK_Scalar1);
                rightMatrix.postTranslate(0, 2 * height);
                drawBitmapMatrix(&canvas, right, rightMatrix);
            }
            patternBBox.fRight = deviceBounds.width();
        }
    }

    if (tileModes[1] == SkShader::kClamp_TileMode) {
        SkIRect subset = SkIRect::MakeXYWH(0, 0, image->width(), 1);
        if (deviceBounds.top() < 0) {
            SkBitmap top;
            SkAssertResult(image->extractSubset(&top, subset));

            SkMatrix topMatrix;
            topMatrix.setScale(SK_Scalar1, -deviceBounds.top());
            topMatrix.postTranslate(0, deviceBounds.top());
            drawBitmapMatrix(&canvas, top, topMatrix);

            if (tileModes[0] == SkShader::kMirror_TileMode) {
                topMatrix.postScale(-1, 1);
                topMatrix.postTranslate(2 * width, 0);
                drawBitmapMatrix(&canvas, top, topMatrix);
            }
            patternBBox.fTop = 0;
        }

        if (deviceBounds.bottom() > height) {
            SkBitmap bottom;
            subset.offset(0, image->height() - 1);
            SkAssertResult(image->extractSubset(&bottom, subset));

            SkMatrix bottomMatrix;
            bottomMatrix.setScale(SK_Scalar1, deviceBounds.bottom() - height);
            bottomMatrix.postTranslate(0, height);
            drawBitmapMatrix(&canvas, bottom, bottomMatrix);

            if (tileModes[0] == SkShader::kMirror_TileMode) {
                bottomMatrix.postScale(-1, 1);
                bottomMatrix.postTranslate(2 * width, 0);
                drawBitmapMatrix(&canvas, bottom, bottomMatrix);
            }
            patternBBox.fBottom = deviceBounds.height();
        }
    }

    // Put the canvas into the pattern stream (fContent).
    SkAutoTDelete<SkStreamAsset> content(patternDevice->content());

    SkPDFImageShader* imageShader =
            SkNEW_ARGS(SkPDFImageShader, (autoState->detach()));
    imageShader->setData(content.get());

    SkAutoTUnref<SkPDFDict> resourceDict(
            patternDevice->createResourceDict());
    populate_tiling_pattern_dict(imageShader, patternBBox,
                                 resourceDict.get(), finalMatrix);

    imageShader->fShaderState->fImage.unlockPixels();

    canon->addImageShader(imageShader);
    return imageShader;
}
예제 #19
0
void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
                                    const SkRect* src, const SkRect& dst,
                                    const SkPaint& paint,
                                    SkCanvas::DrawBitmapRectFlags flags) {
    SkMatrix    matrix;
    SkRect      bitmapBounds, tmpSrc, tmpDst;
    SkBitmap    tmpBitmap;

    bitmapBounds.isetWH(bitmap.width(), bitmap.height());

    // Compute matrix from the two rectangles
    if (src) {
        tmpSrc = *src;
    } else {
        tmpSrc = bitmapBounds;
    }
    matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);

    const SkRect* dstPtr = &dst;
    const SkBitmap* bitmapPtr = &bitmap;

    // clip the tmpSrc to the bounds of the bitmap, and recompute dstRect if
    // needed (if the src was clipped). No check needed if src==null.
    if (src) {
        if (!bitmapBounds.contains(*src)) {
            if (!tmpSrc.intersect(bitmapBounds)) {
                return; // nothing to draw
            }
            // recompute dst, based on the smaller tmpSrc
            matrix.mapRect(&tmpDst, tmpSrc);
            dstPtr = &tmpDst;
        }

        // since we may need to clamp to the borders of the src rect within
        // the bitmap, we extract a subset.
        SkIRect srcIR;
        tmpSrc.roundOut(&srcIR);
        if (!bitmap.extractSubset(&tmpBitmap, srcIR)) {
            return;
        }
        bitmapPtr = &tmpBitmap;

        // Since we did an extract, we need to adjust the matrix accordingly
        SkScalar dx = 0, dy = 0;
        if (srcIR.fLeft > 0) {
            dx = SkIntToScalar(srcIR.fLeft);
        }
        if (srcIR.fTop > 0) {
            dy = SkIntToScalar(srcIR.fTop);
        }
        if (dx || dy) {
            matrix.preTranslate(dx, dy);
        }

        SkRect extractedBitmapBounds;
        extractedBitmapBounds.isetWH(bitmapPtr->width(), bitmapPtr->height());
        if (extractedBitmapBounds == tmpSrc) {
            // no fractional part in src, we can just call drawBitmap
            goto USE_DRAWBITMAP;
        }
    } else {
        USE_DRAWBITMAP:
        // We can go faster by just calling drawBitmap, which will concat the
        // matrix with the CTM, and try to call drawSprite if it can. If not,
        // it will make a shader and call drawRect, as we do below.
        this->drawBitmap(draw, *bitmapPtr, matrix, paint);
        return;
    }

    // construct a shader, so we can call drawRect with the dst
    SkShader* s = SkShader::CreateBitmapShader(*bitmapPtr,
                                               SkShader::kClamp_TileMode,
                                               SkShader::kClamp_TileMode,
                                               &matrix);
    if (NULL == s) {
        return;
    }

    SkPaint paintWithShader(paint);
    paintWithShader.setStyle(SkPaint::kFill_Style);
    paintWithShader.setShader(s)->unref();

    // Call ourself, in case the subclass wanted to share this setup code
    // but handle the drawRect code themselves.
    this->drawRect(draw, *dstPtr, paintWithShader);
}
예제 #20
0
sk_sp<SkSpecialImage> SkXfermodeImageFilter::filterImageGPU(SkSpecialImage* source,
                                                            sk_sp<SkSpecialImage> background,
                                                            const SkIPoint& backgroundOffset,
                                                            sk_sp<SkSpecialImage> foreground,
                                                            const SkIPoint& foregroundOffset,
                                                            const SkIRect& bounds) const {
    SkASSERT(source->isTextureBacked());

    GrContext* context = source->getContext();

    sk_sp<GrTexture> backgroundTex, foregroundTex;
    
    if (background) {
        backgroundTex = background->asTextureRef(context);
    }

    if (foreground) {
        foregroundTex = foreground->asTextureRef(context);
    }

    GrPaint paint;
    // SRGBTODO: AllowSRGBInputs?
    sk_sp<GrFragmentProcessor> bgFP;

    if (backgroundTex) {
        SkMatrix backgroundMatrix;
        backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
        backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
                                      SkIntToScalar(-backgroundOffset.fY));
        bgFP = GrTextureDomainEffect::Make(
                            backgroundTex.get(), nullptr, backgroundMatrix,
                            GrTextureDomain::MakeTexelDomain(backgroundTex.get(),
                                                             background->subset()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode);
    } else {
        bgFP = GrConstColorProcessor::Make(GrColor_TRANSPARENT_BLACK,
                                             GrConstColorProcessor::kIgnore_InputMode);
    }

    if (foregroundTex) {
        SkMatrix foregroundMatrix;
        foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
        foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
                                      SkIntToScalar(-foregroundOffset.fY));

        sk_sp<GrFragmentProcessor> foregroundFP;

        foregroundFP = GrTextureDomainEffect::Make(
                            foregroundTex.get(), nullptr, foregroundMatrix,
                            GrTextureDomain::MakeTexelDomain(foregroundTex.get(), 
                                                             foreground->subset()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode);

        paint.addColorFragmentProcessor(std::move(foregroundFP));

        // A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
        SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
        if (!mode) {
            // It would be awesome to use SkXfermode::Create here but it knows better
            // than us and won't return a kSrcOver_Mode SkXfermode. That means we
            // have to get one the hard way.
            struct ProcCoeff rec;
            rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
            SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);

            mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
        }

        sk_sp<GrFragmentProcessor> xferFP(
            mode->makeFragmentProcessorForImageFilter(std::move(bgFP)));

        // A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
        if (xferFP) {
            paint.addColorFragmentProcessor(std::move(xferFP));
        }
    } else {
        paint.addColorFragmentProcessor(std::move(bgFP));
    }

    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    sk_sp<GrDrawContext> drawContext(context->makeDrawContext(SkBackingFit::kApprox,
                                                              bounds.width(), bounds.height(),
                                                              kSkia8888_GrPixelConfig,
                                                              sk_ref_sp(source->getColorSpace())));
    if (!drawContext) {
        return nullptr;
    }

    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    drawContext->drawRect(GrNoClip(), paint, matrix, SkRect::Make(bounds));

    return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                       kNeedNewImageUniqueID_SpecialImage,
                                       drawContext->asTexture(),
                                       sk_ref_sp(drawContext->getColorSpace()));
}
예제 #21
0
bool SVGPaintServerGradient::setup(GraphicsContext*& context, 
    const RenderObject* object, 
    SVGPaintTargetType type, 
    bool isPaintingText) const
{
    m_ownerElement->buildGradient();

    RenderStyle* style = object->style();
    bool isFilled = 
        (type & ApplyToFillTargetType) && 
         style->svgStyle()->hasFill();
    bool isStroked = 
        (type & ApplyToStrokeTargetType) && 
         style->svgStyle()->hasStroke();

    if(!gradientStops().size())
        return false;

    if(gradientStops().size()==1) {
        context->setFillColor(gradientStops()[0].second);
        return true;
    }

    // Create a gradient builder helper to generate the data 
    // we'll need to provide Skia
    SkiaGradientBuilder builder(gradientStops(), 
        isFilled ? style->svgStyle()->fillOpacity() : 
                   style->svgStyle()->strokeOpacity());

    SkShader::TileMode tile_mode;

    // Convert SVG spread modes to Skia tile modes
    switch(spreadMethod())
    {
    default:
    case SPREADMETHOD_PAD:     
        tile_mode = SkShader::kClamp_TileMode; break;
    case SPREADMETHOD_REFLECT: 
        tile_mode = SkShader::kMirror_TileMode; break;
    case SPREADMETHOD_REPEAT:  
        tile_mode = SkShader::kRepeat_TileMode; break;
    }

    SkShader* shader = NULL;

    SkMatrix matrix;

    // Calculate a matrix to transform a gradient to fit the bounding box
    if (boundingBoxMode()) {
        matrix.reset();
        SkRect rc = context->getBoundingBoxForCurrentPath(true);

        matrix.preTranslate(rc.fLeft, rc.fTop);
        matrix.preScale(rc.width(), rc.height());
        matrix.preConcat(gradientTransform());
    } else
        matrix = gradientTransform();

    if (this->type() == LinearGradientPaintServer) {
        const SVGPaintServerLinearGradient* linear = 
            static_cast<const SVGPaintServerLinearGradient*>(this);

        SkPoint pts[2];

        pts[0].fX = linear->gradientStart().x();
        pts[0].fY = linear->gradientStart().y();
        pts[1].fX = linear->gradientEnd().x();
        pts[1].fY = linear->gradientEnd().y();

        shader = SkGradientShader::CreateLinear(pts, 
            builder.colors(), builder.pos(), builder.count(), tile_mode);
    } else if (this->type() == RadialGradientPaintServer) {
        const SVGPaintServerRadialGradient* radial = 
            static_cast<const SVGPaintServerRadialGradient*>(this);

        SkPoint center;
        SkScalar radius;

        center.fX = radial->gradientCenter().x();
        center.fY = radial->gradientCenter().y();
        radius = radial->gradientRadius();

        shader = SkGradientShader::CreateRadial(
            center, radius, builder.colors(), builder.pos(), 
            builder.count(), tile_mode);

    } else {
        return false;
    }

    if (isPaintingText) {
        if (isFilled) {
            context->setTextDrawingMode(cTextFill);
        }

        if (isStroked) {
            context->setTextDrawingMode(cTextStroke);
        }
    }

    if (isStroked) {
        applyStrokeStyleToContext(context, style, object);
    }

    if (shader) {
        shader->setLocalMatrix(matrix);
        context->platformContext()->setGradient(shader);

        return true;
    }

    return false;
}
예제 #22
0
sk_sp<SkShader> Gradient::createShader(const SkMatrix& localMatrix) {
  sortStopsIfNecessary();
  ASSERT(m_stopsSorted);

  size_t countUsed = totalStopsNeeded(m_stops.data(), m_stops.size());
  ASSERT(countUsed >= 2);
  ASSERT(countUsed >= m_stops.size());

  ColorStopOffsetVector pos(countUsed);
  ColorStopColorVector colors(countUsed);
  fillStops(m_stops.data(), m_stops.size(), pos, colors);

  SkShader::TileMode tile = SkShader::kClamp_TileMode;
  switch (m_spreadMethod) {
    case SpreadMethodReflect:
      tile = SkShader::kMirror_TileMode;
      break;
    case SpreadMethodRepeat:
      tile = SkShader::kRepeat_TileMode;
      break;
    case SpreadMethodPad:
      tile = SkShader::kClamp_TileMode;
      break;
  }

  sk_sp<SkShader> shader;
  uint32_t shouldDrawInPMColorSpace =
      m_drawInPMColorSpace ? SkGradientShader::kInterpolateColorsInPremul_Flag
                           : 0;
  if (m_radial) {
    SkMatrix adjustedLocalMatrix = localMatrix;

    if (m_aspectRatio != 1) {
      // CSS3 elliptical gradients: apply the elliptical scaling at the
      // gradient center point.
      adjustedLocalMatrix.preTranslate(m_p0.x(), m_p0.y());
      adjustedLocalMatrix.preScale(1, 1 / m_aspectRatio);
      adjustedLocalMatrix.preTranslate(-m_p0.x(), -m_p0.y());
      ASSERT(m_p0 == m_p1);
    }

    // Since the two-point radial gradient is slower than the plain radial,
    // only use it if we have to.
    if (m_p0 == m_p1 && m_r0 <= 0.0f) {
      shader = SkGradientShader::MakeRadial(
          m_p1.data(), m_r1, colors.data(), pos.data(),
          static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace,
          &adjustedLocalMatrix);
    } else {
      // The radii we give to Skia must be positive. If we're given a
      // negative radius, ask for zero instead.
      SkScalar radius0 = m_r0 >= 0.0f ? WebCoreFloatToSkScalar(m_r0) : 0;
      SkScalar radius1 = m_r1 >= 0.0f ? WebCoreFloatToSkScalar(m_r1) : 0;
      shader = SkGradientShader::MakeTwoPointConical(
          m_p0.data(), radius0, m_p1.data(), radius1, colors.data(), pos.data(),
          static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace,
          &adjustedLocalMatrix);
    }
  } else {
    SkPoint pts[2] = {m_p0.data(), m_p1.data()};
    shader = SkGradientShader::MakeLinear(
        pts, colors.data(), pos.data(), static_cast<int>(countUsed), tile,
        shouldDrawInPMColorSpace, &localMatrix);
  }

  if (!shader) {
    // use last color, since our "geometry" was degenerate (e.g. radius==0)
    shader = SkShader::MakeColorShader(colors[countUsed - 1]);
  }

  return shader;
}
예제 #23
0
static void
SetPaintPattern(SkPaint& aPaint, const Pattern& aPattern, TempBitmap& aTmpBitmap,
                Float aAlpha = 1.0)
{
  switch (aPattern.GetType()) {
    case PatternType::COLOR: {
      Color color = static_cast<const ColorPattern&>(aPattern).mColor;
      aPaint.setColor(ColorToSkColor(color, aAlpha));
      break;
    }
    case PatternType::LINEAR_GRADIENT: {
      const LinearGradientPattern& pat = static_cast<const LinearGradientPattern&>(aPattern);
      GradientStopsSkia *stops = static_cast<GradientStopsSkia*>(pat.mStops.get());
      SkShader::TileMode mode = ExtendModeToTileMode(stops->mExtendMode);

      if (stops->mCount >= 2) {
        SkPoint points[2];
        points[0] = SkPoint::Make(SkFloatToScalar(pat.mBegin.x), SkFloatToScalar(pat.mBegin.y));
        points[1] = SkPoint::Make(SkFloatToScalar(pat.mEnd.x), SkFloatToScalar(pat.mEnd.y));

        SkShader* shader = SkGradientShader::CreateLinear(points,
                                                          &stops->mColors.front(),
                                                          &stops->mPositions.front(),
                                                          stops->mCount,
                                                          mode);

        if (shader) {
            SkMatrix mat;
            GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
            SkShader* matrixShader = SkShader::CreateLocalMatrixShader(shader, mat);
            SkSafeUnref(shader);
            SkSafeUnref(aPaint.setShader(matrixShader));
        }

      } else {
        aPaint.setColor(SkColorSetARGB(0, 0, 0, 0));
      }
      break;
    }
    case PatternType::RADIAL_GRADIENT: {
      const RadialGradientPattern& pat = static_cast<const RadialGradientPattern&>(aPattern);
      GradientStopsSkia *stops = static_cast<GradientStopsSkia*>(pat.mStops.get());
      SkShader::TileMode mode = ExtendModeToTileMode(stops->mExtendMode);

      if (stops->mCount >= 2) {
        SkPoint points[2];
        points[0] = SkPoint::Make(SkFloatToScalar(pat.mCenter1.x), SkFloatToScalar(pat.mCenter1.y));
        points[1] = SkPoint::Make(SkFloatToScalar(pat.mCenter2.x), SkFloatToScalar(pat.mCenter2.y));

        SkShader* shader = SkGradientShader::CreateTwoPointConical(points[0],
                                                                   SkFloatToScalar(pat.mRadius1),
                                                                   points[1],
                                                                   SkFloatToScalar(pat.mRadius2),
                                                                   &stops->mColors.front(),
                                                                   &stops->mPositions.front(),
                                                                   stops->mCount,
                                                                   mode);
        if (shader) {
            SkMatrix mat;
            GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
            SkShader* matrixShader = SkShader::CreateLocalMatrixShader(shader, mat);
            SkSafeUnref(shader);
            SkSafeUnref(aPaint.setShader(matrixShader));
        }

      } else {
        aPaint.setColor(SkColorSetARGB(0, 0, 0, 0));
      }
      break;
    }
    case PatternType::SURFACE: {
      const SurfacePattern& pat = static_cast<const SurfacePattern&>(aPattern);
      aTmpBitmap = GetBitmapForSurface(pat.mSurface);
      SkBitmap& bitmap = aTmpBitmap.mBitmap;

      SkMatrix mat;
      GfxMatrixToSkiaMatrix(pat.mMatrix, mat);

      if (!pat.mSamplingRect.IsEmpty()) {
        SkIRect rect = IntRectToSkIRect(pat.mSamplingRect);
        bitmap.extractSubset(&bitmap, rect);
        mat.preTranslate(rect.x(), rect.y());
      }

      SkShader::TileMode mode = ExtendModeToTileMode(pat.mExtendMode);
      SkShader* shader = SkShader::CreateBitmapShader(bitmap, mode, mode);
      SkShader* matrixShader = SkShader::CreateLocalMatrixShader(shader, mat);
      SkSafeUnref(shader);
      SkSafeUnref(aPaint.setShader(matrixShader));
      if (pat.mFilter == Filter::POINT) {
        aPaint.setFilterLevel(SkPaint::kNone_FilterLevel);
      }
      break;
    }
  }
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
                                           const SkBitmap& src,
                                           const Context& ctx,
                                           SkBitmap* result,
                                           SkIPoint* offset) const {
    SkBitmap background = src;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPU(0, proxy, src, ctx, &background, &backgroundOffset)) {
        return false;
    }

    GrTexture* backgroundTex = background.getTexture();
    if (nullptr == backgroundTex) {
        SkASSERT(false);
        return false;
    }

    SkBitmap foreground = src;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPU(1, proxy, src, ctx, &foreground, &foregroundOffset)) {
        return false;
    }
    GrTexture* foregroundTex = foreground.getTexture();
    GrContext* context = foregroundTex->getContext();
    SkIRect bounds = background.bounds().makeOffset(backgroundOffset.x(), backgroundOffset.y());
    bounds.join(foreground.bounds().makeOffset(foregroundOffset.x(), foregroundOffset.y()));
    if (bounds.isEmpty()) {
        return false;
    }

    const GrFragmentProcessor* xferFP = nullptr;

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = bounds.width();
    desc.fHeight = bounds.height();
    desc.fConfig = kSkia8888_GrPixelConfig;
    SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
    if (!dst) {
        return false;
    }

    GrPaint paint;
    SkMatrix backgroundMatrix;
    backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
    backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
                                  SkIntToScalar(-backgroundOffset.fY));
    SkAutoTUnref<const GrFragmentProcessor> bgFP(GrTextureDomainEffect::Create(
        backgroundTex, backgroundMatrix,
        GrTextureDomain::MakeTexelDomain(backgroundTex, background.bounds()),
        GrTextureDomain::kDecal_Mode,
        GrTextureParams::kNone_FilterMode)
    );
    if (!fMode || !fMode->asFragmentProcessor(&xferFP, bgFP)) {
        // canFilterImageGPU() should've taken care of this
        SkASSERT(false);
        return false;
    }

    SkMatrix foregroundMatrix;
    foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
    foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
                                  SkIntToScalar(-foregroundOffset.fY));


    SkAutoTUnref<const GrFragmentProcessor> foregroundFP(GrTextureDomainEffect::Create(
        foregroundTex, foregroundMatrix,
        GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
        GrTextureDomain::kDecal_Mode,
        GrTextureParams::kNone_FilterMode)
    );

    paint.addColorFragmentProcessor(foregroundFP.get());
    if (xferFP) {
        paint.addColorFragmentProcessor(xferFP)->unref();
    }
    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
    if (!drawContext) {
        return false;
    }

    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));

    offset->fX = bounds.left();
    offset->fY = bounds.top();
    GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
    return true;
}
static SkMatrix make_div_and_translate_matrix(GrTexture* texture, int x, int y) {
    SkMatrix matrix = GrCoordTransform::MakeDivByTextureWHMatrix(texture);
    matrix.preTranslate(SkIntToScalar(x), SkIntToScalar(y));
    return matrix;
}
예제 #26
0
 static void preTranslate(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
     SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
     obj->preTranslate(dx, dy);
 }
예제 #27
0
bool SkDisplacementMapEffect::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                             SkBitmap* result, SkIPoint* offset) const {
    SkBitmap colorBM = src;
    SkIPoint colorOffset = SkIPoint::Make(0, 0);
    if (getColorInput() && !getColorInput()->getInputResultGPU(proxy, src, ctx, &colorBM,
                                                               &colorOffset)) {
        return false;
    }
    SkBitmap displacementBM = src;
    SkIPoint displacementOffset = SkIPoint::Make(0, 0);
    if (getDisplacementInput() &&
        !getDisplacementInput()->getInputResultGPU(proxy, src, ctx, &displacementBM,
                                                   &displacementOffset)) {
        return false;
    }
    SkIRect bounds;
    // Since GrDisplacementMapEffect does bounds checking on color pixel access, we don't need to
    // pad the color bitmap to bounds here.
    if (!this->applyCropRect(ctx, colorBM, colorOffset, &bounds)) {
        return false;
    }
    SkIRect displBounds;
    if (!this->applyCropRect(ctx, proxy, displacementBM,
                             &displacementOffset, &displBounds, &displacementBM)) {
        return false;
    }
    if (!bounds.intersect(displBounds)) {
        return false;
    }
    GrTexture* color = colorBM.getTexture();
    GrTexture* displacement = displacementBM.getTexture();
    GrContext* context = color->getContext();

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = bounds.width();
    desc.fHeight = bounds.height();
    desc.fConfig = kSkia8888_GrPixelConfig;

    SkAutoTUnref<GrTexture> dst(
        context->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch));

    if (!dst) {
        return false;
    }

    SkVector scale = SkVector::Make(fScale, fScale);
    ctx.ctm().mapVectors(&scale, 1);

    GrPaint paint;
    SkMatrix offsetMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(displacement);
    offsetMatrix.preTranslate(SkIntToScalar(colorOffset.fX - displacementOffset.fX),
                              SkIntToScalar(colorOffset.fY - displacementOffset.fY));

    paint.addColorProcessor(
        GrDisplacementMapEffect::Create(fXChannelSelector,
                                        fYChannelSelector,
                                        scale,
                                        displacement,
                                        offsetMatrix,
                                        color,
                                        colorBM.dimensions()))->unref();
    SkIRect colorBounds = bounds;
    colorBounds.offset(-colorOffset);
    SkMatrix matrix;
    matrix.setTranslate(-SkIntToScalar(colorBounds.x()),
                        -SkIntToScalar(colorBounds.y()));
    context->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, matrix,
                      SkRect::Make(colorBounds));
    offset->fX = bounds.left();
    offset->fY = bounds.top();
    WrapTexture(dst, bounds.width(), bounds.height(), result);
    return true;
}
예제 #28
0
void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
                                    const SkRect* src, const SkRect& dst,
                                    const SkPaint& paint, SkCanvas::SrcRectConstraint constraint) {
    SkMatrix    matrix;
    SkRect      bitmapBounds, tmpSrc, tmpDst;
    SkBitmap    tmpBitmap;

    bitmapBounds.isetWH(bitmap.width(), bitmap.height());

    // Compute matrix from the two rectangles
    if (src) {
        tmpSrc = *src;
    } else {
        tmpSrc = bitmapBounds;
    }
    matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);

    LogDrawScaleFactor(SkMatrix::Concat(*draw.fMatrix, matrix), paint.getFilterQuality());

    const SkRect* dstPtr = &dst;
    const SkBitmap* bitmapPtr = &bitmap;

    // clip the tmpSrc to the bounds of the bitmap, and recompute dstRect if
    // needed (if the src was clipped). No check needed if src==null.
    if (src) {
        if (!bitmapBounds.contains(*src)) {
            if (!tmpSrc.intersect(bitmapBounds)) {
                return; // nothing to draw
            }
            // recompute dst, based on the smaller tmpSrc
            matrix.mapRect(&tmpDst, tmpSrc);
            dstPtr = &tmpDst;
        }
    }

    if (src && !src->contains(bitmapBounds) &&
        SkCanvas::kFast_SrcRectConstraint == constraint &&
        paint.getFilterQuality() != kNone_SkFilterQuality) {
        // src is smaller than the bounds of the bitmap, and we are filtering, so we don't know
        // how much more of the bitmap we need, so we can't use extractSubset or drawBitmap,
        // but we must use a shader w/ dst bounds (which can access all of the bitmap needed).
        goto USE_SHADER;
    }

    if (src) {
        // since we may need to clamp to the borders of the src rect within
        // the bitmap, we extract a subset.
        const SkIRect srcIR = tmpSrc.roundOut();
        if (!bitmap.extractSubset(&tmpBitmap, srcIR)) {
            return;
        }
        bitmapPtr = &tmpBitmap;

        // Since we did an extract, we need to adjust the matrix accordingly
        SkScalar dx = 0, dy = 0;
        if (srcIR.fLeft > 0) {
            dx = SkIntToScalar(srcIR.fLeft);
        }
        if (srcIR.fTop > 0) {
            dy = SkIntToScalar(srcIR.fTop);
        }
        if (dx || dy) {
            matrix.preTranslate(dx, dy);
        }

        SkRect extractedBitmapBounds;
        extractedBitmapBounds.isetWH(bitmapPtr->width(), bitmapPtr->height());
        if (extractedBitmapBounds == tmpSrc) {
            // no fractional part in src, we can just call drawBitmap
            goto USE_DRAWBITMAP;
        }
    } else {
        USE_DRAWBITMAP:
        // We can go faster by just calling drawBitmap, which will concat the
        // matrix with the CTM, and try to call drawSprite if it can. If not,
        // it will make a shader and call drawRect, as we do below.
        if (CanApplyDstMatrixAsCTM(matrix, paint)) {
            draw.drawBitmap(*bitmapPtr, matrix, dstPtr, paint);
            return;
        }
    }

    USE_SHADER:

    // Since the shader need only live for our stack-frame, pass in a custom allocator. This
    // can save malloc calls, and signals to SkMakeBitmapShader to not try to copy the bitmap
    // if its mutable, since that precaution is not needed (give the short lifetime of the shader).
    SkTBlitterAllocator allocator;
    // construct a shader, so we can call drawRect with the dst
    auto s = SkMakeBitmapShader(*bitmapPtr, SkShader::kClamp_TileMode, SkShader::kClamp_TileMode,
                                &matrix, kNever_SkCopyPixelsMode, &allocator);
    if (!s) {
        return;
    }
    // we deliberately add a ref, since the allocator wants to be the last owner
    s.get()->ref();

    SkPaint paintWithShader(paint);
    paintWithShader.setStyle(SkPaint::kFill_Style);
    paintWithShader.setShader(s);

    // Call ourself, in case the subclass wanted to share this setup code
    // but handle the drawRect code themselves.
    this->drawRect(draw, *dstPtr, paintWithShader);
}
예제 #29
0
bool SkXfermodeImageFilter::filterImageGPUDeprecated(Proxy* proxy,
                                                     const SkBitmap& src,
                                                     const Context& ctx,
                                                     SkBitmap* result,
                                                     SkIPoint* offset) const {
    GrContext* context = nullptr;
    SkBitmap background = src;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPUDeprecated(0, proxy, src, ctx, &background, &backgroundOffset)) {
        background.reset();
    }
    GrTexture* backgroundTex = background.getTexture();
    if (backgroundTex) {
        context = backgroundTex->getContext();
    }

    SkBitmap foreground = src;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPUDeprecated(1, proxy, src, ctx, &foreground, &foregroundOffset)) {
        foreground.reset();
    }
    GrTexture* foregroundTex = foreground.getTexture();
    if (foregroundTex) {
        context = foregroundTex->getContext();
    }

    if (!context) {
        return false;
    }

    SkIRect bounds = background.bounds().makeOffset(backgroundOffset.x(), backgroundOffset.y());
    bounds.join(foreground.bounds().makeOffset(foregroundOffset.x(), foregroundOffset.y()));
    if (bounds.isEmpty()) {
        return false;
    }

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = bounds.width();
    desc.fHeight = bounds.height();
    desc.fConfig = kSkia8888_GrPixelConfig;
    SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
    if (!dst) {
        return false;
    }

    GrPaint paint;
    SkAutoTUnref<const GrFragmentProcessor> bgFP;

    if (backgroundTex) {
        SkMatrix backgroundMatrix;
        backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
        backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
                                      SkIntToScalar(-backgroundOffset.fY));
        bgFP.reset(GrTextureDomainEffect::Create(
                            backgroundTex, backgroundMatrix,
                            GrTextureDomain::MakeTexelDomain(backgroundTex, background.bounds()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode));
    } else {
        bgFP.reset(GrConstColorProcessor::Create(GrColor_TRANSPARENT_BLACK,
                                                 GrConstColorProcessor::kIgnore_InputMode));
    }

    if (foregroundTex) {
        SkMatrix foregroundMatrix;
        foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
        foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
                                      SkIntToScalar(-foregroundOffset.fY));

        SkAutoTUnref<const GrFragmentProcessor> foregroundFP;

        foregroundFP.reset(GrTextureDomainEffect::Create(
                            foregroundTex, foregroundMatrix,
                            GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode));

        paint.addColorFragmentProcessor(foregroundFP.get());

        // A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
        SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
        if (!mode) {
            // It would be awesome to use SkXfermode::Create here but it knows better
            // than us and won't return a kSrcOver_Mode SkXfermode. That means we
            // have to get one the hard way.
            struct ProcCoeff rec;
            rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
            SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);

            mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
        }

        SkAutoTUnref<const GrFragmentProcessor> xferFP(mode->getFragmentProcessorForImageFilter(bgFP));

        // A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
        if (xferFP) {
            paint.addColorFragmentProcessor(xferFP);
        }
    } else {
        paint.addColorFragmentProcessor(bgFP);
    }

    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
    if (!drawContext) {
        return false;
    }

    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));

    offset->fX = bounds.left();
    offset->fY = bounds.top();
    GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
    return true;
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
                                           const SkBitmap& src,
                                           const SkMatrix& ctm,
                                           SkBitmap* result,
                                           SkIPoint* offset) {
    SkBitmap background;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (!SkImageFilterUtils::GetInputResultGPU(getInput(0), proxy, src, ctm, &background,
                                               &backgroundOffset)) {
        return false;
    }
    GrTexture* backgroundTex = background.getTexture();
    SkBitmap foreground;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (!SkImageFilterUtils::GetInputResultGPU(getInput(1), proxy, src, ctm, &foreground,
                                               &foregroundOffset)) {
        return false;
    }
    GrTexture* foregroundTex = foreground.getTexture();
    GrContext* context = foregroundTex->getContext();

    GrEffectRef* xferEffect = NULL;

    GrTextureDesc desc;
    desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
    desc.fWidth = src.width();
    desc.fHeight = src.height();
    desc.fConfig = kSkia8888_GrPixelConfig;

    GrAutoScratchTexture ast(context, desc);
    SkAutoTUnref<GrTexture> dst(ast.detach());

    GrContext::AutoRenderTarget art(context, dst->asRenderTarget());

    SkXfermode::Coeff sm, dm;
    if (!SkXfermode::AsNewEffectOrCoeff(fMode, &xferEffect, &sm, &dm, backgroundTex)) {
        return false;
    }

    SkMatrix foregroundMatrix = GrEffect::MakeDivByTextureWHMatrix(foregroundTex);
    foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
                                  SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));


    SkRect srcRect;
    src.getBounds(&srcRect);
    if (NULL != xferEffect) {
        GrPaint paint;
        paint.addColorTextureEffect(foregroundTex, foregroundMatrix);
        paint.addColorEffect(xferEffect)->unref();
        context->drawRect(paint, srcRect);
    } else {
        GrPaint backgroundPaint;
        SkMatrix backgroundMatrix = GrEffect::MakeDivByTextureWHMatrix(backgroundTex);
        backgroundPaint.addColorTextureEffect(backgroundTex, backgroundMatrix);
        context->drawRect(backgroundPaint, srcRect);

        GrPaint foregroundPaint;
        foregroundPaint.setBlendFunc(sk_blend_to_grblend(sm), sk_blend_to_grblend(dm));
        foregroundPaint.addColorTextureEffect(foregroundTex, foregroundMatrix);
        context->drawRect(foregroundPaint, srcRect);
    }
    offset->fX += backgroundOffset.fX;
    offset->fY += backgroundOffset.fY;
    return SkImageFilterUtils::WrapTexture(dst, src.width(), src.height(), result);
}