C++ SkIRect::contains方法代码示例

static void test_restriction(skiatest::Reporter* reporter, SkCanvas* canvas) {
    REPORTER_ASSERT(reporter, canvas->getDeviceClipBounds() == gBaseRestrictedR);

    const SkIRect restrictionR = { 2, 2, 8, 8 };
    canvas->androidFramework_setDeviceClipRestriction(restrictionR);
    REPORTER_ASSERT(reporter, canvas->getDeviceClipBounds() == restrictionR);

    const SkIRect clipR = { 4, 4, 6, 6 };
    canvas->clipRect(SkRect::Make(clipR), SkClipOp::kIntersect);
    REPORTER_ASSERT(reporter, canvas->getDeviceClipBounds() == clipR);

#ifdef SK_SUPPORT_DEPRECATED_CLIPOPS
    // now test that expanding clipops can't exceed the restriction
    const SkClipOp expanders[] = {
        SkClipOp::kUnion_deprecated,
        SkClipOp::kXOR_deprecated,
        SkClipOp::kReverseDifference_deprecated,
        SkClipOp::kReplace_deprecated,
    };

    const SkRect expandR = { 0, 0, 5, 9 };
    SkASSERT(!SkRect::Make(restrictionR).contains(expandR));

    for (SkClipOp op : expanders) {
        canvas->save();
        canvas->clipRect(expandR, op);
        REPORTER_ASSERT(reporter, gBaseRestrictedR.contains(canvas->getDeviceClipBounds()));
        canvas->restore();
    }
#endif
}

bool SkImageFilter::applyCropRect(const Context& ctx, Proxy* proxy, const SkBitmap& src,
                                  SkIPoint* srcOffset, SkIRect* bounds, SkBitmap* dst) const {
    SkIRect srcBounds;
    src.getBounds(&srcBounds);
    srcBounds.offset(*srcOffset);
    SkIRect dstBounds;
    this->onFilterNodeBounds(srcBounds, ctx.ctm(), &dstBounds, kForward_MapDirection);
    fCropRect.applyTo(dstBounds, ctx.ctm(), bounds);
    if (!bounds->intersect(ctx.clipBounds())) {
        return false;
    }

    if (srcBounds.contains(*bounds)) {
        *dst = src;
        return true;
    } else {
        SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds->width(), bounds->height()));
        if (!device) {
            return false;
        }
        SkCanvas canvas(device);
        canvas.clear(0x00000000);
        canvas.drawBitmap(src, srcOffset->x() - bounds->x(), srcOffset->y() - bounds->y());
        *srcOffset = SkIPoint::Make(bounds->x(), bounds->y());
        *dst = device->accessBitmap(false);
        return true;
    }
}

static void imagescaleproc(SkCanvas* canvas, SkImage* image, const SkBitmap&, const SkIRect& srcIR,
                           const SkRect& dstR) {
    const int newW = SkScalarRoundToInt(dstR.width());
    const int newH = SkScalarRoundToInt(dstR.height());
    SkAutoTUnref<SkImage> newImage(image->newImage(newW, newH, &srcIR));

#ifdef SK_DEBUG
    const SkIRect baseR = SkIRect::MakeWH(image->width(), image->height());
    const bool containsSubset = baseR.contains(srcIR);
#endif

    if (newImage) {
        SkASSERT(containsSubset);
        canvas->drawImage(newImage, dstR.x(), dstR.y());
    } else {
        // newImage() does not support subsets that are not contained by the original
        // but drawImageRect does, so we just draw an X in its place to indicate that we are
        // deliberately not drawing here.
        SkASSERT(!containsSubset);
        SkPaint paint;
        paint.setStyle(SkPaint::kStroke_Style);
        paint.setStrokeWidth(4);
        canvas->drawLine(4, 4, newW - 4.0f, newH - 4.0f, paint);
        canvas->drawLine(4, newH - 4.0f, newW - 4.0f, 4, paint);
    }
}

bool TiledPage::updateTileDirtiness(const SkIRect& tileBounds)
{
    if (!m_glWebViewState || tileBounds.isEmpty()) {
        m_invalRegion.setEmpty();
        m_invalTilesRegion.setEmpty();
        return false;
    }

    bool visibleTileIsDirty = false;
    for (int x = 0; x < m_baseTileSize; x++) {

        BaseTile& tile = m_baseTiles[x];

        // if the tile is in the dirty region then we must invalidate it
        if (m_invalRegion.contains(tile.x(), tile.y())) {
            tile.markAsDirty(m_latestPictureInval, m_invalTilesRegion);
            if (tileBounds.contains(tile.x(), tile.y()))
                visibleTileIsDirty = true;
        }
    }

    // clear the invalidated region as all tiles within that region have now
    // been marked as dirty.
    m_invalRegion.setEmpty();
    m_invalTilesRegion.setEmpty();
    return visibleTileIsDirty;
}

int SkRTree::validateSubtree(Node* root, SkIRect bounds, bool isRoot) const {
    // make sure the pointer is pointing to a valid place
    SkASSERT(fNodes.contains(static_cast<void*>(root)));

    if (isRoot) {
        // If the root of this subtree is the overall root, we have looser standards:
        if (root->isLeaf()) {
            SkASSERT(root->fNumChildren >= 1 && root->fNumChildren <= fMaxChildren);
        } else {
            SkASSERT(root->fNumChildren >= 2 && root->fNumChildren <= fMaxChildren);
        }
    } else {
        SkASSERT(root->fNumChildren >= fMinChildren && root->fNumChildren <= fMaxChildren);
    }

    for (int i = 0; i < root->fNumChildren; ++i) {
        SkASSERT(bounds.contains(root->child(i)->fBounds));
    }

    if (root->isLeaf()) {
        SkASSERT(0 == root->fLevel);
        return root->fNumChildren;
    } else {
        int childCount = 0;
        for (int i = 0; i < root->fNumChildren; ++i) {
            SkASSERT(root->child(i)->fChild.subtree->fLevel == root->fLevel - 1);
            childCount += this->validateSubtree(root->child(i)->fChild.subtree,
                                                root->child(i)->fBounds);
        }
        return childCount;
    }
}

bool GrGpu::writePixels(GrSurface* surface, GrSurfaceOrigin origin, int left, int top, int width,
                        int height, GrColorType srcColorType, const GrMipLevel texels[],
                        int mipLevelCount) {
    SkASSERT(surface);
    if (1 == mipLevelCount) {
        // We require that if we are not mipped, then the write region is contained in the surface
        SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height);
        SkIRect bounds = SkIRect::MakeWH(surface->width(), surface->height());
        if (!bounds.contains(subRect)) {
            return false;
        }
    } else if (0 != left || 0 != top || width != surface->width() || height != surface->height()) {
        // We require that if the texels are mipped, than the write region is the entire surface
        return false;
    }

    for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
        if (!texels[currentMipLevel].fPixels ) {
            return false;
        }
    }

    this->handleDirtyContext();
    if (this->onWritePixels(surface, origin, left, top, width, height, srcColorType, texels,
                            mipLevelCount)) {
        SkIRect rect = SkIRect::MakeXYWH(left, top, width, height);
        this->didWriteToSurface(surface, origin, &rect, mipLevelCount);
        fStats.incTextureUploads();
        return true;
    }
    return false;
}

// Much of readPixels is exercised by copyTo testing, since readPixels is the backend for that
// method. Here we explicitly test subset copies.
//
DEF_TEST(BitmapReadPixels, reporter) {
    const int W = 4;
    const int H = 4;
    const size_t rowBytes = W * sizeof(SkPMColor);
    const SkImageInfo srcInfo = SkImageInfo::MakeN32Premul(W, H);
    SkPMColor srcPixels[16];
    fill_4x4_pixels(srcPixels);
    SkBitmap srcBM;
    srcBM.installPixels(srcInfo, srcPixels, rowBytes);

    SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(W, H);
    SkPMColor dstPixels[16];

    const struct {
        bool     fExpectedSuccess;
        SkIPoint fRequestedSrcLoc;
        SkISize  fRequestedDstSize;
        // If fExpectedSuccess, check these, otherwise ignore
        SkIPoint fExpectedDstLoc;
        SkIRect  fExpectedSrcR;
    } gRec[] = {
        { true,  { 0, 0 }, { 4, 4 }, { 0, 0 }, { 0, 0, 4, 4 } },
        { true,  { 1, 1 }, { 2, 2 }, { 0, 0 }, { 1, 1, 3, 3 } },
        { true,  { 2, 2 }, { 4, 4 }, { 0, 0 }, { 2, 2, 4, 4 } },
        { true,  {-1,-1 }, { 2, 2 }, { 1, 1 }, { 0, 0, 1, 1 } },
        { false, {-1,-1 }, { 1, 1 }, { 0, 0 }, { 0, 0, 0, 0 } },
    };

    for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
        clear_4x4_pixels(dstPixels);

        dstInfo = dstInfo.makeWH(gRec[i].fRequestedDstSize.width(),
                                 gRec[i].fRequestedDstSize.height());
        bool success = srcBM.readPixels(dstInfo, dstPixels, rowBytes,
                                        gRec[i].fRequestedSrcLoc.x(), gRec[i].fRequestedSrcLoc.y());

        REPORTER_ASSERT(reporter, gRec[i].fExpectedSuccess == success);
        if (success) {
            const SkIRect srcR = gRec[i].fExpectedSrcR;
            const int dstX = gRec[i].fExpectedDstLoc.x();
            const int dstY = gRec[i].fExpectedDstLoc.y();
            // Walk the dst pixels, and check if we got what we expected
            for (int y = 0; y < H; ++y) {
                for (int x = 0; x < W; ++x) {
                    SkPMColor dstC = dstPixels[y*4+x];
                    // get into src coordinates
                    int sx = x - dstX + srcR.x();
                    int sy = y - dstY + srcR.y();
                    if (srcR.contains(sx, sy)) {
                        REPORTER_ASSERT(reporter, check_4x4_pixel(dstC, sx, sy));
                    } else {
                        REPORTER_ASSERT(reporter, 0 == dstC);
                    }
                }
            }
        }
    }
}

void draw(SkCanvas* canvas) {
    SkIRect rect = { 30, 50, 40, 60 };
    SkIRect tests[] = { { 30, 50, 31, 51}, { 39, 49, 40, 50}, { 29, 59, 30, 60} };
    for (auto contained : tests) {
        SkDebugf("rect: (%d, %d, %d, %d) %s (%d, %d, %d, %d)\n",
                 rect.left(), rect.top(), rect.right(), rect.bottom(),
                 rect.contains(contained) ? "contains" : "does not contain",
                 contained.left(), contained.top(), contained.right(), contained.bottom());
    }
}

SkCodec::Result SkCodec::startScanlineDecode(const SkImageInfo& dstInfo,
        const SkCodec::Options* options, SkPMColor ctable[], int* ctableCount) {
    // Reset fCurrScanline in case of failure.
    fCurrScanline = -1;
    // Ensure that valid color ptrs are passed in for kIndex8 color type
    if (kIndex_8_SkColorType == dstInfo.colorType()) {
        if (nullptr == ctable || nullptr == ctableCount) {
            return SkCodec::kInvalidParameters;
        }
    } else {
        if (ctableCount) {
            *ctableCount = 0;
        }
        ctableCount = nullptr;
        ctable = nullptr;
    }

    if (!this->rewindIfNeeded()) {
        return kCouldNotRewind;
    }

    // Set options.
    Options optsStorage;
    if (nullptr == options) {
        options = &optsStorage;
    } else if (options->fSubset) {
        SkIRect size = SkIRect::MakeSize(dstInfo.dimensions());
        if (!size.contains(*options->fSubset)) {
            return kInvalidInput;
        }

        // We only support subsetting in the x-dimension for scanline decoder.
        // Subsetting in the y-dimension can be accomplished using skipScanlines().
        if (options->fSubset->top() != 0 || options->fSubset->height() != dstInfo.height()) {
            return kInvalidInput;
        }
    }

    // FIXME: Support subsets somehow?
    if (!this->dimensionsSupported(dstInfo.dimensions())) {
        return kInvalidScale;
    }

    const Result result = this->onStartScanlineDecode(dstInfo, *options, ctable, ctableCount);
    if (result != SkCodec::kSuccess) {
        return result;
    }

    fCurrScanline = 0;
    fDstInfo = dstInfo;
    fOptions = *options;
    return kSuccess;
}

bool TiledPage::hasMissingContent(const SkIRect& tileBounds)
{
    int neededTiles = tileBounds.width() * tileBounds.height();
    for (int j = 0; j < m_baseTileSize; j++) {
        BaseTile& tile = m_baseTiles[j];
        if (tileBounds.contains(tile.x(), tile.y())) {
            if (tile.frontTexture())
                neededTiles--;
        }
    }
    return neededTiles > 0;
}

static bool clip_to_limit(const SkRegion& orig, SkRegion* reduced) {
    // need to limit coordinates such that the width/height of our rect can be represented
    // in SkFixed (16.16). See skbug.com/7998
    const int32_t limit = 32767 >> 1;

    SkIRect limitR;
    limitR.set(-limit, -limit, limit, limit);
    if (limitR.contains(orig.getBounds())) {
        return false;
    }
    reduced->op(orig, limitR, SkRegion::kIntersect_Op);
    return true;
}

bool TiledPage::isReady(const SkIRect& tileBounds)
{
    int neededTiles = tileBounds.width() * tileBounds.height();
    XLOG("tiled page %p needs %d ready tiles", this, neededTiles);
    for (int j = 0; j < m_baseTileSize; j++) {
        BaseTile& tile = m_baseTiles[j];
        if (tileBounds.contains(tile.x(), tile.y())) {
            if (tile.isTileReady())
                neededTiles--;
        }
    }
    XLOG("tiled page %p still needs %d ready tiles", this, neededTiles);
    return neededTiles == 0;
}

SkImage* SkImage::newSubset(const SkIRect& subset) const {
    if (subset.isEmpty()) {
        return nullptr;
    }

    const SkIRect bounds = SkIRect::MakeWH(this->width(), this->height());
    if (!bounds.contains(subset)) {
        return nullptr;
    }

    // optimization : return self if the subset == our bounds
    if (bounds == subset) {
        return SkRef(const_cast<SkImage*>(this));
    }
    return as_IB(this)->onNewSubset(subset);
}

bool SkLatticeIter::Valid(int width, int height, const SkCanvas::Lattice& lattice) {
    SkIRect totalBounds = SkIRect::MakeWH(width, height);
    SkASSERT(lattice.fBounds);
    const SkIRect latticeBounds = *lattice.fBounds;
    if (!totalBounds.contains(latticeBounds)) {
        return false;
    }

    bool zeroXDivs = lattice.fXCount <= 0 || (1 == lattice.fXCount &&
                                              latticeBounds.fLeft == lattice.fXDivs[0]);
    bool zeroYDivs = lattice.fYCount <= 0 || (1 == lattice.fYCount &&
                                              latticeBounds.fTop == lattice.fYDivs[0]);
    if (zeroXDivs && zeroYDivs) {
        return false;
    }

    return valid_divs(lattice.fXDivs, lattice.fXCount, latticeBounds.fLeft, latticeBounds.fRight)
        && valid_divs(lattice.fYDivs, lattice.fYCount, latticeBounds.fTop, latticeBounds.fBottom);
}

    void updateMC(const SkMatrix& totalMatrix, const SkRegion& totalClip,
                  const SkClipStack& clipStack, SkRegion* updateClip) {
        int x = fDevice->getOrigin().x();
        int y = fDevice->getOrigin().y();
        int width = fDevice->width();
        int height = fDevice->height();

        if ((x | y) == 0) {
            fMatrix = &totalMatrix;
            fClip = totalClip;
        } else {
            fMatrixStorage = totalMatrix;
            fMatrixStorage.postTranslate(SkIntToScalar(-x),
                                         SkIntToScalar(-y));
            fMatrix = &fMatrixStorage;

            totalClip.translate(-x, -y, &fClip);
        }

        fClip.op(0, 0, width, height, SkRegion::kIntersect_Op);

        // intersect clip, but don't translate it (yet)

        if (updateClip) {
            updateClip->op(x, y, x + width, y + height,
                           SkRegion::kDifference_Op);
        }

        fDevice->setMatrixClip(*fMatrix, fClip, clipStack);

#ifdef SK_DEBUG
        if (!fClip.isEmpty()) {
            SkIRect deviceR;
            deviceR.set(0, 0, width, height);
            SkASSERT(deviceR.contains(fClip.getBounds()));
        }
#endif
        // default is to assume no external matrix
        fMVMatrix = NULL;
        fExtMatrix = NULL;
    }