C++ SkRect::bottom方法代码示例

static void draw_bbox(SkCanvas* canvas, const SkRect& r) {
    SkPaint paint;
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setColor(0xFFFF7088);
    canvas->drawRect(r, paint);
    canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), paint);
    canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), paint);
}

void draw(SkCanvas* canvas) {
    SkRect rect = SkRect::MakeLTRB(5, 35, 15, 25);
    SkDebugf("rect: %g, %g, %g, %g  isEmpty: %s\n", rect.left(), rect.top(), rect.right(),
              rect.bottom(), rect.isEmpty() ? "true" : "false");
    rect.sort();
    SkDebugf("rect: %g, %g, %g, %g  isEmpty: %s\n", rect.left(), rect.top(), rect.right(),
              rect.bottom(), rect.isEmpty() ? "true" : "false");
}

static void convolve_gaussian(GrDrawContext* drawContext,
                              GrRenderTarget* rt,
                              const GrClip& clip,
                              const SkRect& srcRect,
                              const SkRect& dstRect,
                              GrTexture* texture,
                              Gr1DKernelEffect::Direction direction,
                              int radius,
                              float sigma,
                              bool cropToSrcRect) {
    float bounds[2] = { 0.0f, 1.0f };
    if (!cropToSrcRect) {
        convolve_gaussian_1d(drawContext, rt, clip, srcRect, dstRect, texture,
                             direction, radius, sigma, false, bounds);
        return;
    }
    SkRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
    SkRect middleSrcRect = srcRect, middleDstRect = dstRect;
    SkRect upperSrcRect = srcRect, upperDstRect = dstRect;
    SkScalar size;
    SkScalar rad = SkIntToScalar(radius);
    if (direction == Gr1DKernelEffect::kX_Direction) {
        bounds[0] = SkScalarToFloat(srcRect.left()) / texture->width();
        bounds[1] = SkScalarToFloat(srcRect.right()) / texture->width();
        size = srcRect.width();
        lowerSrcRect.fRight = srcRect.left() + rad;
        lowerDstRect.fRight = dstRect.left() + rad;
        upperSrcRect.fLeft = srcRect.right() - rad;
        upperDstRect.fLeft = dstRect.right() - rad;
        middleSrcRect.inset(rad, 0);
        middleDstRect.inset(rad, 0);
    } else {
        bounds[0] = SkScalarToFloat(srcRect.top()) / texture->height();
        bounds[1] = SkScalarToFloat(srcRect.bottom()) / texture->height();
        size = srcRect.height();
        lowerSrcRect.fBottom = srcRect.top() + rad;
        lowerDstRect.fBottom = dstRect.top() + rad;
        upperSrcRect.fTop = srcRect.bottom() - rad;
        upperDstRect.fTop = dstRect.bottom() - rad;
        middleSrcRect.inset(0, rad);
        middleDstRect.inset(0, rad);
    }
    if (radius >= size * SK_ScalarHalf) {
        // Blur radius covers srcRect; use bounds over entire draw
        convolve_gaussian_1d(drawContext, rt, clip, srcRect, dstRect, texture,
                            direction, radius, sigma, true, bounds);
    } else {
        // Draw upper and lower margins with bounds; middle without.
        convolve_gaussian_1d(drawContext, rt, clip, lowerSrcRect, lowerDstRect, texture,
                             direction, radius, sigma, true, bounds);
        convolve_gaussian_1d(drawContext, rt, clip, upperSrcRect, upperDstRect, texture,
                             direction, radius, sigma, true, bounds);
        convolve_gaussian_1d(drawContext, rt, clip, middleSrcRect, middleDstRect, texture,
                             direction, radius, sigma, false, bounds);
    }
}

static void draw_box_frame(SkCanvas* canvas, int width, int height) {
    SkPaint p;
    p.setStyle(SkPaint::kStroke_Style);
    p.setColor(SK_ColorRED);
    SkRect r = SkRect::MakeIWH(width, height);
    r.inset(0.5f, 0.5f);
    canvas->drawRect(r, p);
    canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), p);
    canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), p);
}

 virtual void onDraw(SkCanvas* canvas) {
     SkPaint paint;
     paint.setImageFilter(SkBlurImageFilter::Create(fSigmaX, fSigmaY))->unref();
     const SkScalar tile_size = SkIntToScalar(128);
     SkRect bounds;
     if (!canvas->getClipBounds(&bounds)) {
         bounds.setEmpty();
     }
     for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
         for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
             canvas->save();
             canvas->clipRect(SkRect::MakeXYWH(x, y, tile_size, tile_size));
             canvas->saveLayer(NULL, &paint);
             const char* str[] = {
                 "The quick",
                 "brown fox",
                 "jumped over",
                 "the lazy dog.",
             };
             SkPaint textPaint;
             textPaint.setAntiAlias(true);
             textPaint.setTextSize(SkIntToScalar(100));
             int posY = 0;
             for (unsigned i = 0; i < SK_ARRAY_COUNT(str); i++) {
                 posY += 100;
                 canvas->drawText(str[i], strlen(str[i]), SkIntToScalar(0),
                                  SkIntToScalar(posY), textPaint);
             }
             canvas->restore();
             canvas->restore();
         }
     }
 }

static bool quick_reject_in_y(const SkPoint pts[4], const SkRect& clip) {
    Sk4s ys(pts[0].fY, pts[1].fY, pts[2].fY, pts[3].fY);
    Sk4s t(clip.top());
    Sk4s b(clip.bottom());

    return (ys < t).allTrue() || (ys > b).allTrue();
}

 void onDraw(SkCanvas* canvas) override {
     SkPaint blurPaint;
     SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(5.0f, 5.0f));
     blurPaint.setImageFilter(blur);
     const SkScalar tile_size = SkIntToScalar(128);
     SkRect bounds;
     if (!canvas->getClipBounds(&bounds)) {
         bounds.setEmpty();
     }
     int ts = SkScalarCeilToInt(tile_size);
     SkImageInfo info = SkImageInfo::MakeN32Premul(ts, ts);
     SkAutoTUnref<SkSurface> tileSurface(canvas->newSurface(info));
     if (!tileSurface.get()) {
         tileSurface.reset(SkSurface::NewRaster(info));
     }
     SkCanvas* tileCanvas = tileSurface->getCanvas();
     for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
         for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
             tileCanvas->save();
             tileCanvas->clear(0);
             tileCanvas->translate(-x, -y);
             SkRect rect = SkRect::MakeWH(WIDTH, HEIGHT);
             tileCanvas->saveLayer(&rect, &blurPaint);
             SkRRect rrect = SkRRect::MakeRectXY(rect.makeInset(20, 20), 25, 25);
             tileCanvas->clipRRect(rrect, SkRegion::kDifference_Op, true);
             SkPaint paint;
             tileCanvas->drawRect(rect, paint);
             tileCanvas->restore();
             tileCanvas->restore();
             canvas->drawImage(tileSurface->makeImageSnapshot().get(), x, y);
         }
     }
 }

Json::Value SkJSONCanvas::makeRect(const SkRect& rect) {
    Json::Value result(Json::arrayValue);
    result.append(Json::Value(rect.left()));
    result.append(Json::Value(rect.top()));
    result.append(Json::Value(rect.right()));
    result.append(Json::Value(rect.bottom()));
    return result;
}

PassRefPtr<JSONObject> LoggingCanvas::objectForSkRect(const SkRect& rect)
{
    RefPtr<JSONObject> rectItem = JSONObject::create();
    rectItem->setNumber("left", rect.left());
    rectItem->setNumber("top", rect.top());
    rectItem->setNumber("right", rect.right());
    rectItem->setNumber("bottom", rect.bottom());
    return rectItem.release();
}

    void drawBorders(SkCanvas* canvas) {
        SkPaint p;
        p.setStyle(SkPaint::kStroke_Style);
        p.setColor(SK_ColorBLUE);

        SkRect r = SkRect::MakeWH(fCell.width() * 2, fCell.height() * 2);
        r.inset(SK_ScalarHalf, SK_ScalarHalf);
        canvas->drawRect(r, p);
        canvas->drawLine(r.left(), r.centerY(), r.right(), r.centerY(), p);
        canvas->drawLine(r.centerX(), r.top(), r.centerX(), r.bottom(), p);
    }

// Return true if the rectangle is aligned to integer boundaries.
// See comments for computeBitmapDrawRects() for how this is used.
static bool areBoundariesIntegerAligned(const SkRect& rect)
{
    // Value is 1.19209e-007. This is the tolerance threshold.
    const float epsilon = std::numeric_limits<float>::epsilon();
    SkIRect roundedRect = roundedIntRect(rect);

    return fabs(rect.x() - roundedRect.x()) < epsilon
        && fabs(rect.y() - roundedRect.y()) < epsilon
        && fabs(rect.right() - roundedRect.right()) < epsilon
        && fabs(rect.bottom() - roundedRect.bottom()) < epsilon;
}

static sk_sp<SkShader> make_shader(const SkRect& bounds) {
    const SkPoint pts[] = {
        { bounds.left(), bounds.top() },
        { bounds.right(), bounds.bottom() },
    };
    const SkColor colors[] = {
        SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorBLACK,
        SK_ColorCYAN, SK_ColorMAGENTA, SK_ColorYELLOW,
    };
    return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
                                        SkShader::kClamp_TileMode);
}

    void writePathVertices(GrDrawBatch::Target* target,
                           GrBatchAtlas* atlas,
                           intptr_t offset,
                           GrColor color,
                           size_t vertexStride,
                           const SkMatrix& viewMatrix,
                           const ShapeData* shapeData) const {
        GrTexture* texture = atlas->getTexture();

        SkScalar dx = shapeData->fBounds.fLeft;
        SkScalar dy = shapeData->fBounds.fTop;
        SkScalar width = shapeData->fBounds.width();
        SkScalar height = shapeData->fBounds.height();

        SkScalar invScale = 1.0f / shapeData->fScale;
        dx *= invScale;
        dy *= invScale;
        width *= invScale;
        height *= invScale;

        SkPoint* positions = reinterpret_cast<SkPoint*>(offset);

        // vertex positions
        // TODO make the vertex attributes a struct
        SkRect r = SkRect::MakeXYWH(dx, dy, width, height);
        positions->setRectFan(r.left(), r.top(), r.right(), r.bottom(), vertexStride);

        // colors
        for (int i = 0; i < kVerticesPerQuad; i++) {
            GrColor* colorPtr = (GrColor*)(offset + sizeof(SkPoint) + i * vertexStride);
            *colorPtr = color;
        }

        const SkScalar tx = SkIntToScalar(shapeData->fAtlasLocation.fX);
        const SkScalar ty = SkIntToScalar(shapeData->fAtlasLocation.fY);

        // vertex texture coords
        SkPoint* textureCoords = (SkPoint*)(offset + sizeof(SkPoint) + sizeof(GrColor));
        textureCoords->setRectFan(tx / texture->width(),
                                  ty / texture->height(),
                                  (tx + shapeData->fBounds.width()) / texture->width(),
                                  (ty + shapeData->fBounds.height())  / texture->height(),
                                  vertexStride);
    }

 void draw_control(SkCanvas* canvas, const SkRect& bounds, SkScalar value,
         SkScalar min, SkScalar max, const char* name) {
     SkPaint paint;
     paint.setAntiAlias(true);
     paint.setStyle(SkPaint::kStroke_Style);
     canvas->drawRect(bounds, paint);
     SkScalar scale = max - min;
     SkScalar yPos = bounds.fTop + (value - min) * bounds.height() / scale;
     paint.setColor(0xFFFF0000);
     canvas->drawLine(bounds.fLeft - 5, yPos, bounds.fRight + 5, yPos, paint);
     SkString label;
     label.printf("%0.3g", value);
     paint.setColor(0xFF000000);
     paint.setTextSize(11.0f);
     paint.setStyle(SkPaint::kFill_Style);
     canvas->drawText(label.c_str(), label.size(), bounds.fLeft + 5, yPos - 5, paint);
     paint.setTextSize(13.0f);
     canvas->drawText(name, strlen(name), bounds.fLeft, bounds.bottom() + 11, paint);
 }

        void advance(const SkRect& bounds) {
            fCenter += fVelocity;
            if (fCenter.fX > bounds.right()) {
                SkASSERT(fVelocity.fX > 0);
                fVelocity.fX = -fVelocity.fX;
            } else if (fCenter.fX < bounds.left()) {
                SkASSERT(fVelocity.fX < 0);
                fVelocity.fX = -fVelocity.fX;
            }
            if (fCenter.fY > bounds.bottom()) {
                if (fVelocity.fY > 0) {
                    fVelocity.fY = -fVelocity.fY;
                }
            } else if (fCenter.fY < bounds.top()) {
                if (fVelocity.fY < 0) {
                    fVelocity.fY = -fVelocity.fY;
                }
            }

            fScale += fDScale;
            if (fScale > 2 || fScale < SK_Scalar1/2) {
                fDScale = -fDScale;
            }

            fRadian += fDRadian;
            fRadian = SkScalarMod(fRadian, 2 * SK_ScalarPI);

            fAlpha += fDAlpha;
            if (fAlpha > 1) {
                fAlpha = 1;
                fDAlpha = -fDAlpha;
            } else if (fAlpha < 0) {
                fAlpha = 0;
                fDAlpha = -fDAlpha;
            }
        }