C++ SkIRect::inset方法代码示例

static bool containsrect_proc(SkRegion& a, SkRegion& b) {
    SkIRect r = a.getBounds();
    r.inset(r.width()/4, r.height()/4);
    (void)a.contains(r);

    r = b.getBounds();
    r.inset(r.width()/4, r.height()/4);
    return b.contains(r);
}

void GraphicsContext::drawFocusRing(const Vector<IntRect>& rects, int width, int offset, const Color& color)
{
    if (paintingDisabled())
        return;

    unsigned rectCount = rects.size();
    if (!rectCount)
        return;

    SkRegion focusRingRegion;
    const int focusRingOutset = getFocusRingOutset(offset);
    for (unsigned i = 0; i < rectCount; i++) {
        SkIRect r = rects[i];
        r.inset(-focusRingOutset, -focusRingOutset);
        focusRingRegion.op(r, SkRegion::kUnion_Op);
    }

    SkPath path;
    SkPaint paint;
    paint.setAntiAlias(true);
    paint.setStyle(SkPaint::kStroke_Style);

    paint.setColor(color.rgb());
    focusRingRegion.getBoundaryPath(&path);
    drawOuterPath(platformContext(), path, paint, width);
    drawInnerPath(platformContext(), path, paint, width);
}

SkDebugCanvas::SkDebugCanvas(int width, int height)
        : INHERITED(width, height)
        , fPicture(NULL)
        , fFilter(false)
        , fMegaVizMode(false)
        , fOverdrawViz(false)
        , fOverrideFilterQuality(false)
        , fFilterQuality(kNone_SkFilterQuality) {
    fUserMatrix.reset();

    // SkPicturePlayback uses the base-class' quickReject calls to cull clipped
    // operations. This can lead to problems in the debugger which expects all
    // the operations in the captured skp to appear in the debug canvas. To
    // circumvent this we create a wide open clip here (an empty clip rect
    // is not sufficient).
    // Internally, the SkRect passed to clipRect is converted to an SkIRect and
    // rounded out. The following code creates a nearly maximal rect that will
    // not get collapsed by the coming conversions (Due to precision loss the
    // inset has to be surprisingly large).
    SkIRect largeIRect = SkIRect::MakeLargest();
    largeIRect.inset(1024, 1024);
    SkRect large = SkRect::Make(largeIRect);
#ifdef SK_DEBUG
    SkASSERT(!large.roundOut().isEmpty());
#endif
    // call the base class' version to avoid adding a draw command
    this->INHERITED::onClipRect(large, SkRegion::kReplace_Op, kHard_ClipEdgeStyle);
}

void GraphicsContext::drawFocusRing(const Vector<IntRect>& rects, int /* width */, int /* offset */, const Color& color)
{
    if (paintingDisabled())
        return;

    unsigned rectCount = rects.size();
    if (!rectCount)
        return;

    SkRegion focusRingRegion;
    const SkScalar focusRingOutset = WebCoreFloatToSkScalar(0.5);
    for (unsigned i = 0; i < rectCount; i++) {
        SkIRect r = rects[i];
        r.inset(-focusRingOutset, -focusRingOutset);
        focusRingRegion.op(r, SkRegion::kUnion_Op);
    }

    SkPath path;
    SkPaint paint;
    paint.setAntiAlias(true);
    paint.setStyle(SkPaint::kStroke_Style);

    paint.setColor(color.rgb());
    paint.setStrokeWidth(focusRingOutset * 2);
    paint.setPathEffect(new SkCornerPathEffect(focusRingOutset * 2))->unref();
    focusRingRegion.getBoundaryPath(&path);
    platformContext()->canvas()->drawPath(path, paint);
}

void SkPageFlipper::inval(const SkRect& rect, bool antialias) {
    SkIRect r;
    rect.round(&r);
    if (antialias) {
        r.inset(-1, -1);
    }
    this->inval(r);
}

static void apply_morphology_pass(GrRenderTargetContext* renderTargetContext,
                                  const GrClip& clip,
                                  sk_sp<GrTextureProxy> textureProxy,
                                  const SkIRect& srcRect,
                                  const SkIRect& dstRect,
                                  int radius,
                                  GrMorphologyEffect::Type morphType,
                                  GrMorphologyEffect::Direction direction) {
    float bounds[2] = { 0.0f, 1.0f };
    SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
    SkIRect middleSrcRect = srcRect, middleDstRect = dstRect;
    SkIRect upperSrcRect = srcRect, upperDstRect = dstRect;
    if (direction == GrMorphologyEffect::Direction::kX) {
        bounds[0] = SkIntToScalar(srcRect.left()) + 0.5f;
        bounds[1] = SkIntToScalar(srcRect.right()) - 0.5f;
        lowerSrcRect.fRight = srcRect.left() + radius;
        lowerDstRect.fRight = dstRect.left() + radius;
        upperSrcRect.fLeft = srcRect.right() - radius;
        upperDstRect.fLeft = dstRect.right() - radius;
        middleSrcRect.inset(radius, 0);
        middleDstRect.inset(radius, 0);
    } else {
        bounds[0] = SkIntToScalar(srcRect.top()) + 0.5f;
        bounds[1] = SkIntToScalar(srcRect.bottom()) - 0.5f;
        lowerSrcRect.fBottom = srcRect.top() + radius;
        lowerDstRect.fBottom = dstRect.top() + radius;
        upperSrcRect.fTop = srcRect.bottom() - radius;
        upperDstRect.fTop = dstRect.bottom() - radius;
        middleSrcRect.inset(0, radius);
        middleDstRect.inset(0, radius);
    }
    if (middleSrcRect.width() <= 0) {
        // radius covers srcRect; use bounds over entire draw
        apply_morphology_rect(renderTargetContext, clip, std::move(textureProxy),
                              srcRect, dstRect, radius, morphType, bounds, direction);
    } else {
        // Draw upper and lower margins with bounds; middle without.
        apply_morphology_rect(renderTargetContext, clip, textureProxy,
                              lowerSrcRect, lowerDstRect, radius, morphType, bounds, direction);
        apply_morphology_rect(renderTargetContext, clip, textureProxy,
                              upperSrcRect, upperDstRect, radius, morphType, bounds, direction);
        apply_morphology_rect_no_bounds(renderTargetContext, clip, std::move(textureProxy),
                                        middleSrcRect, middleDstRect, radius, morphType, direction);
    }
}

static void apply_morphology_pass(GrDrawContext* drawContext,
                                  const GrClip& clip,
                                  GrTexture* texture,
                                  const SkIRect& srcRect,
                                  const SkIRect& dstRect,
                                  int radius,
                                  GrMorphologyEffect::MorphologyType morphType,
                                  Gr1DKernelEffect::Direction direction) {
    float bounds[2] = { 0.0f, 1.0f };
    SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
    SkIRect middleSrcRect = srcRect, middleDstRect = dstRect;
    SkIRect upperSrcRect = srcRect, upperDstRect = dstRect;
    if (direction == Gr1DKernelEffect::kX_Direction) {
        bounds[0] = (SkIntToScalar(srcRect.left()) + 0.5f) / texture->width();
        bounds[1] = (SkIntToScalar(srcRect.right()) - 0.5f) / texture->width();
        lowerSrcRect.fRight = srcRect.left() + radius;
        lowerDstRect.fRight = dstRect.left() + radius;
        upperSrcRect.fLeft = srcRect.right() - radius;
        upperDstRect.fLeft = dstRect.right() - radius;
        middleSrcRect.inset(radius, 0);
        middleDstRect.inset(radius, 0);
    } else {
        bounds[0] = (SkIntToScalar(srcRect.top()) + 0.5f) / texture->height();
        bounds[1] = (SkIntToScalar(srcRect.bottom()) - 0.5f) / texture->height();
        lowerSrcRect.fBottom = srcRect.top() + radius;
        lowerDstRect.fBottom = dstRect.top() + radius;
        upperSrcRect.fTop = srcRect.bottom() - radius;
        upperDstRect.fTop = dstRect.bottom() - radius;
        middleSrcRect.inset(0, radius);
        middleDstRect.inset(0, radius);
    }
    if (middleSrcRect.fLeft - middleSrcRect.fRight >= 0) {
        // radius covers srcRect; use bounds over entire draw
        apply_morphology_rect(drawContext, clip, texture, srcRect, dstRect, radius,
                              morphType, bounds, direction);
    } else {
        // Draw upper and lower margins with bounds; middle without.
        apply_morphology_rect(drawContext, clip, texture, lowerSrcRect, lowerDstRect, radius,
                              morphType, bounds, direction);
        apply_morphology_rect(drawContext, clip, texture, upperSrcRect, upperDstRect, radius,
                              morphType, bounds, direction);
        apply_morphology_rect_no_bounds(drawContext, clip, texture, middleSrcRect, middleDstRect,
                                        radius, morphType, direction);
    }
}

void draw(SkCanvas* canvas) {
    SkIRect bounds;
    source.getBounds(&bounds);
    bounds.inset(100, 100);
    SkBitmap bitmap;
    source.extractSubset(&bitmap, bounds);
    canvas->scale(.5f, .5f);
    canvas->drawBitmap(bitmap, 10, 10);
}

static void test_blur_drawing(skiatest::Reporter* reporter) {

    SkPaint paint;
    paint.setColor(SK_ColorGRAY);
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setStrokeWidth(SkIntToScalar(strokeWidth));

    SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5));
    for (int style = 0; style <= kLastEnum_SkBlurStyle; ++style) {
        SkBlurStyle blurStyle = static_cast<SkBlurStyle>(style);

        const uint32_t flagPermutations = SkBlurMaskFilter::kAll_BlurFlag;
        for (uint32_t flags = 0; flags < flagPermutations; ++flags) {
            SkMaskFilter* filter;
            filter = SkBlurMaskFilter::Create(blurStyle, sigma, flags);

            paint.setMaskFilter(filter);
            filter->unref();

            for (size_t test = 0; test < SK_ARRAY_COUNT(tests); ++test) {
                SkPath path;
                tests[test].addPath(&path);
                SkPath strokedPath;
                paint.getFillPath(path, &strokedPath);
                SkRect refBound = strokedPath.getBounds();
                SkIRect iref;
                refBound.roundOut(&iref);
                iref.inset(-outset, -outset);
                SkBitmap refBitmap;
                create(&refBitmap, iref);

                SkCanvas refCanvas(refBitmap);
                refCanvas.translate(SkIntToScalar(-iref.fLeft),
                                    SkIntToScalar(-iref.fTop));
                drawBG(&refCanvas);
                refCanvas.drawPath(path, paint);

                for (int view = 0; view < tests[test].viewLen; ++view) {
                    SkIRect itest = tests[test].views[view];
                    SkBitmap testBitmap;
                    create(&testBitmap, itest);

                    SkCanvas testCanvas(testBitmap);
                    testCanvas.translate(SkIntToScalar(-itest.fLeft),
                                         SkIntToScalar(-itest.fTop));
                    drawBG(&testCanvas);
                    testCanvas.drawPath(path, paint);

                    REPORTER_ASSERT(reporter,
                        compare(refBitmap, iref, testBitmap, itest));
                }
            }
        }
    }
}

void SkTileGrid::search(const SkIRect& query, SkTDArray<void*>* results) {
    SkIRect adjustedQuery = query;
    // The inset is to counteract the outset that was applied in 'insert'
    // The outset/inset is to optimize for lookups of size
    // 'tileInterval + 2 * margin' that are aligned with the tile grid.
    adjustedQuery.inset(fInfo.fMargin.width(), fInfo.fMargin.height());
    adjustedQuery.offset(fInfo.fOffset);
    adjustedQuery.sort();  // in case the inset inverted the rectangle
    // Convert the query rectangle from device coordinates to tile coordinates
    // by rounding outwards to the nearest tile boundary so that the resulting tile
    // region includes the query rectangle. (using truncating division to "floor")
    int tileStartX = adjustedQuery.left() / fInfo.fTileInterval.width();
    int tileEndX = (adjustedQuery.right() + fInfo.fTileInterval.width() - 1) /
        fInfo.fTileInterval.width();
    int tileStartY = adjustedQuery.top() / fInfo.fTileInterval.height();
    int tileEndY = (adjustedQuery.bottom() + fInfo.fTileInterval.height() - 1) /
        fInfo.fTileInterval.height();

    tileStartX = SkPin32(tileStartX, 0, fXTileCount - 1);
    tileEndX = SkPin32(tileEndX, tileStartX+1, fXTileCount);
    tileStartY = SkPin32(tileStartY, 0, fYTileCount - 1);
    tileEndY = SkPin32(tileEndY, tileStartY+1, fYTileCount);

    int queryTileCount = (tileEndX - tileStartX) * (tileEndY - tileStartY);
    SkASSERT(queryTileCount);
    if (queryTileCount == 1) {
        *results = this->tile(tileStartX, tileStartY);
    } else {
        results->reset();
        SkTDArray<int> curPositions;
        curPositions.setCount(queryTileCount);
        // Note: Reserving space for 1024 tile pointers on the stack. If the
        // malloc becomes a bottleneck, we may consider increasing that number.
        // Typical large web page, say 2k x 16k, would require 512 tiles of
        // size 256 x 256 pixels.
        SkAutoSTArray<1024, SkTDArray<void *>*> storage(queryTileCount);
        SkTDArray<void *>** tileRange = storage.get();
        int tile = 0;
        for (int x = tileStartX; x < tileEndX; ++x) {
            for (int y = tileStartY; y < tileEndY; ++y) {
                tileRange[tile] = &this->tile(x, y);
                curPositions[tile] = tileRange[tile]->count() ? 0 : kTileFinished;
                ++tile;
            }
        }
        void *nextElement;
        while(NULL != (nextElement = fNextDatumFunction(tileRange, curPositions))) {
            results->push(nextElement);
        }
    }
}

void CursorRing::draw(SkCanvas* canvas, LayerAndroid* layer)
{
#if USE(ACCELERATED_COMPOSITING)
    int layerId = m_node->isInLayer() ? m_frame->layer(m_node)->uniqueId() : -1;
    if (layer->uniqueId() != layerId)
        return;
#endif
    if (canvas->quickReject(m_bounds, SkCanvas::kAA_EdgeType)) {
        DBG_NAV_LOGD("canvas->quickReject cursorNode=%d (nodePointer=%p)"
            " bounds=(%d,%d,w=%d,h=%d)", m_node->index(), m_node->nodePointer(),
            m_bounds.x(), m_bounds.y(), m_bounds.width(), m_bounds.height());
        m_followedLink = false;
        return;
    }
    unsigned rectCount = m_rings.size();
    SkRegion rgn;
    SkPath path;
    for (unsigned i = 0; i < rectCount; i++)
    {
        SkRect  r(m_rings[i]);
        SkIRect ir;

        r.round(&ir);
        ir.inset(-CURSOR_RING_OUTER_OUTSET, -CURSOR_RING_OUTER_OUTSET);
        rgn.op(ir, SkRegion::kUnion_Op);
    }
    rgn.getBoundaryPath(&path);

    SkPaint paint;
    paint.setAntiAlias(true);
    paint.setPathEffect(new SkCornerPathEffect(CURSOR_RING_ROUNDEDNESS))->unref();
    if (m_flavor >= NORMAL_ANIMATING) { // pressed
        paint.setColor(cursorPressedColors[m_flavor - NORMAL_ANIMATING]);
        canvas->drawPath(path, paint);
    }
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setStrokeWidth(CURSOR_RING_OUTER_DIAMETER);
    paint.setColor(cursorOuterColors[m_flavor]);
    canvas->drawPath(path, paint);
    paint.setStrokeWidth(CURSOR_RING_INNER_DIAMETER);
    paint.setColor(cursorInnerColors[m_flavor]);
    canvas->drawPath(path, paint);
}

void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) {
    const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
                                         dst.fTop + (dst.height() / 2.0f));

    SkIRect inner = dst;
    inner.inset(dst.width()/4, dst.height()/4);

    SkPoint3 norm;
    const SkPoint3 left =  SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
    const SkPoint3 up =    SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
    const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2,  0.0f, SK_ScalarRoot2Over2);
    const SkPoint3 down =  SkPoint3::Make(0.0f,  SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);

    for (int y = dst.fTop; y < dst.fBottom; ++y) {
        for (int x = dst.fLeft; x < dst.fRight; ++x) {
            if (inner.contains(x, y)) {
                norm.set(0.0f, 0.0f, 1.0f);
            } else {
                SkScalar locX = x + 0.5f - center.fX;
                SkScalar locY = y + 0.5f - center.fY;

                if (locX >= 0.0f) {
                    if (locY > 0.0f) {
                        norm = locX >= locY ? right : down;   // LR corner
                    } else {
                        norm = locX > -locY ? right : up;     // UR corner
                    }
                } else {
                    if (locY > 0.0f) {
                        norm = -locX > locY ? left : down;    // LL corner
                    } else {
                        norm = locX > locY ? up : left;       // UL corner
                    }
                }
            }

            norm_to_rgb(bm, x, y, norm);
        }
    }
}

bool SkRasterizer::rasterize(const SkPath& fillPath, const SkMatrix& matrix,
                             const SkIRect* clipBounds, SkMaskFilter* filter,
                             SkMask* mask, SkMask::CreateMode mode) const {
    SkIRect storage;

    if (clipBounds && filter && SkMask::kJustRenderImage_CreateMode != mode) {
        SkIPoint    margin;
        SkMask      srcM, dstM;

        srcM.fFormat = SkMask::kA8_Format;
        srcM.fBounds.set(0, 0, 1, 1);
        srcM.fImage = NULL;
        if (!filter->filterMask(&dstM, srcM, matrix, &margin)) {
            return false;
        }
        storage = *clipBounds;
        storage.inset(-margin.fX, -margin.fY);
        clipBounds = &storage;
    }

    return this->onRasterize(fillPath, matrix, clipBounds, mask, mode);
}

static void convolve_gaussian(GrDrawContext* drawContext,
                              const GrClip& clip,
                              const SkIRect& srcRect,
                              GrTexture* texture,
                              Gr1DKernelEffect::Direction direction,
                              int radius,
                              float sigma,
                              const SkIRect* srcBounds,
                              const SkIPoint& srcOffset) {
    float bounds[2] = { 0.0f, 1.0f };
    SkIRect dstRect = SkIRect::MakeWH(srcRect.width(), srcRect.height());
    if (!srcBounds) {
        convolve_gaussian_1d(drawContext, clip, dstRect, srcOffset, texture,
                             direction, radius, sigma, false, bounds);
        return;
    }
    SkIRect midRect = *srcBounds, leftRect, rightRect;
    midRect.offset(srcOffset);
    SkIRect topRect, bottomRect;
    if (direction == Gr1DKernelEffect::kX_Direction) {
        bounds[0] = SkIntToFloat(srcBounds->left()) / texture->width();
        bounds[1] = SkIntToFloat(srcBounds->right()) / texture->width();
        topRect = SkIRect::MakeLTRB(0, 0, dstRect.right(), midRect.top());
        bottomRect = SkIRect::MakeLTRB(0, midRect.bottom(), dstRect.right(), dstRect.bottom());
        midRect.inset(radius, 0);
        leftRect = SkIRect::MakeLTRB(0, midRect.top(), midRect.left(), midRect.bottom());
        rightRect =
            SkIRect::MakeLTRB(midRect.right(), midRect.top(), dstRect.width(), midRect.bottom());
        dstRect.fTop = midRect.top();
        dstRect.fBottom = midRect.bottom();
    } else {
        bounds[0] = SkIntToFloat(srcBounds->top()) / texture->height();
        bounds[1] = SkIntToFloat(srcBounds->bottom()) / texture->height();
        topRect = SkIRect::MakeLTRB(0, 0, midRect.left(), dstRect.bottom());
        bottomRect = SkIRect::MakeLTRB(midRect.right(), 0, dstRect.right(), dstRect.bottom());
        midRect.inset(0, radius);
        leftRect = SkIRect::MakeLTRB(midRect.left(), 0, midRect.right(), midRect.top());
        rightRect =
            SkIRect::MakeLTRB(midRect.left(), midRect.bottom(), midRect.right(), dstRect.height());
        dstRect.fLeft = midRect.left();
        dstRect.fRight = midRect.right();
    }
    if (!topRect.isEmpty()) {
        drawContext->clear(&topRect, 0, false);
    }

    if (!bottomRect.isEmpty()) {
        drawContext->clear(&bottomRect, 0, false);
    }
    if (midRect.isEmpty()) {
        // Blur radius covers srcBounds; use bounds over entire draw
        convolve_gaussian_1d(drawContext, clip, dstRect, srcOffset, texture,
                             direction, radius, sigma, true, bounds);
    } else {
        // Draw right and left margins with bounds; middle without.
        convolve_gaussian_1d(drawContext, clip, leftRect, srcOffset, texture,
                             direction, radius, sigma, true, bounds);
        convolve_gaussian_1d(drawContext, clip, rightRect, srcOffset, texture,
                             direction, radius, sigma, true, bounds);
        convolve_gaussian_1d(drawContext, clip, midRect, srcOffset, texture,
                             direction, radius, sigma, false, bounds);
    }
}

//.........这里部分代码省略.........
            paint.setStyle(SkPaint::kStroke_Style);
            canvas->drawIRect(irect, paint);
        }

        // clip the drop-down arrow to be inside the select box
        if (extraParams->menuList.arrowX - 4 > irect.fLeft)
            irect.fLeft = extraParams->menuList.arrowX - 4;
        if (extraParams->menuList.arrowX + 12 < irect.fRight)
            irect.fRight = extraParams->menuList.arrowX + 12;

        irect.fTop = extraParams->menuList.arrowY - (extraParams->menuList.arrowHeight) / 2;
        irect.fBottom = extraParams->menuList.arrowY + (extraParams->menuList.arrowHeight - 1) / 2;
        halfWidth = irect.width() / 2;
        quarterWidth = irect.width() / 4;

        if (state == WebThemeEngine::StateFocused) // FIXME: draw differenty?
            state = WebThemeEngine::StateNormal;
        box(canvas, irect, bgColors[state]);
        triangle(canvas,
            irect.fLeft  + quarterWidth, irect.fTop,
            irect.fRight - quarterWidth, irect.fTop,
            irect.fLeft  + halfWidth,    irect.fBottom,
            edgeColor);

        break;

    case WebThemeEngine::PartSliderTrack: {
        SkIRect lirect =  irect;

        // Draw a narrow rect for the track plus box hatches on the ends.
        if (state == WebThemeEngine::StateFocused) // FIXME: draw differently?
            state = WebThemeEngine::StateNormal;
        if (extraParams->slider.vertical) {
            lirect.inset(halfWidth - sliderIndent, noOffset);
            box(canvas, lirect, bgColors[state]);
            line(canvas, left, top, right, top, edgeColor);
            line(canvas, left, bottom, right, bottom, edgeColor);
        } else {
            lirect.inset(noOffset, halfHeight - sliderIndent);
            box(canvas, lirect, bgColors[state]);
            line(canvas, left, top, left, bottom, edgeColor);
            line(canvas, right, top, right, bottom, edgeColor);
        }
        break;
    }

    case WebThemeEngine::PartSliderThumb:
        if (state == WebThemeEngine::StateFocused) // FIXME: draw differently?
            state = WebThemeEngine::StateNormal;
        oval(canvas, irect, bgColors[state]);
        break;

    case WebThemeEngine::PartInnerSpinButton: {
        // stack half-height up and down arrows on top of each other
        SkIRect lirect;
        int halfHeight = rect.height / 2;
        if (extraParams->innerSpin.readOnly)
            state = blink::WebThemeEngine::StateDisabled;

        lirect.set(rect.x, rect.y, rect.x + rect.width - 1, rect.y + halfHeight - 1);
        box(canvas, lirect, bgColors[state]);
        bottom = lirect.fBottom;
        quarterHeight = lirect.height() / 4;
        triangle(canvas,
            left  + quarterWidth, bottom - quarterHeight,
            right - quarterWidth, bottom - quarterHeight,