C++ SkRRect::setOval方法代码示例

// Test that all the SkRRect entry points correctly handle un-sorted and
// zero-sized input rects
static void test_empty(skiatest::Reporter* reporter) {
    static const SkRect oooRects[] = {  // out of order
        { 100, 0, 0, 100 },  // ooo horizontal
        { 0, 100, 100, 0 },  // ooo vertical
        { 100, 100, 0, 0 },  // ooo both
    };

    static const SkRect emptyRects[] = {
        { 100, 100, 100, 200 }, // empty horizontal
        { 100, 100, 200, 100 }, // empty vertical
        { 100, 100, 100, 100 }, // empty both
        { 0, 0, 0, 0 }          // setEmpty-empty
    };

    static const SkVector radii[4] = { { 0, 1 }, { 2, 3 }, { 4, 5 }, { 6, 7 } };

    SkRRect r;

    for (size_t i = 0; i < SK_ARRAY_COUNT(oooRects); ++i) {
        r.setRect(oooRects[i]);
        REPORTER_ASSERT(reporter, !r.isEmpty());

        r.setOval(oooRects[i]);
        REPORTER_ASSERT(reporter, !r.isEmpty());

        r.setRectXY(oooRects[i], 1, 2);
        REPORTER_ASSERT(reporter, !r.isEmpty());

        r.setNinePatch(oooRects[i], 0, 1, 2, 3);
        REPORTER_ASSERT(reporter, !r.isEmpty());

        r.setRectRadii(oooRects[i], radii);
        REPORTER_ASSERT(reporter, !r.isEmpty());
    }

    for (size_t i = 0; i < SK_ARRAY_COUNT(emptyRects); ++i) {
        r.setRect(emptyRects[i]);
        REPORTER_ASSERT(reporter, r.isEmpty());

        r.setOval(emptyRects[i]);
        REPORTER_ASSERT(reporter, r.isEmpty());

        r.setRectXY(emptyRects[i], 1, 2);
        REPORTER_ASSERT(reporter, r.isEmpty());

        r.setNinePatch(emptyRects[i], 0, 1, 2, 3);
        REPORTER_ASSERT(reporter, r.isEmpty());

        r.setRectRadii(emptyRects[i], radii);
        REPORTER_ASSERT(reporter, r.isEmpty());
    }
}

void draw(SkCanvas* canvas) {
    canvas->clear(SK_ColorWHITE);
    SkPaint paint;
    paint.setAntiAlias(true);
    paint.setColor(0x8055aaff);
    SkRRect oval;
    oval.setOval({10, 20, 90, 100});
    canvas->clipRRect(oval, SkClipOp::kIntersect, true);
    canvas->drawCircle(70, 100, 60, paint);
}

DEF_TEST(CanvasState_test_soft_clips, reporter) {
    SkBitmap bitmap;
    bitmap.allocN32Pixels(10, 10);
    SkCanvas canvas(bitmap);

    SkRRect roundRect;
    roundRect.setOval(SkRect::MakeWH(5, 5));

    canvas.clipRRect(roundRect, SkCanvas::kIntersect_Op, true);

    SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas);
    REPORTER_ASSERT(reporter, !state);
}

 SkRRect makeRRect() {
     SkRRect rrect;
     RandomSetRRect rrectType = makeSetRRectType();
     if (fPrintName) {
         SkDebugf("%.*s%s\n", fPathDepth * 3, fTab, gRandomSetRRectNames[rrectType]);
     }
     switch (rrectType) {
     case kSetEmpty:
         rrect.setEmpty();
         break;
     case kSetRect: {
         SkRect rect = makeRect();
         rrect.setRect(rect);
     }
     break;
     case kSetOval: {
         SkRect oval = makeRect();
         rrect.setOval(oval);
     }
     break;
     case kSetRectXY: {
         SkRect rect = makeRect();
         SkScalar xRad = makeScalar();
         SkScalar yRad = makeScalar();
         rrect.setRectXY(rect, xRad, yRad);
     }
     break;
     case kSetNinePatch: {
         SkRect rect = makeRect();
         SkScalar leftRad = makeScalar();
         SkScalar topRad = makeScalar();
         SkScalar rightRad = makeScalar();
         SkScalar bottomRad = makeScalar();
         rrect.setNinePatch(rect, leftRad, topRad, rightRad, bottomRad);
         SkDebugf("");  // keep locals in scope
     }
     break;
     case kSetRectRadii: {
         SkRect rect = makeRect();
         SkVector radii[4];
         makeVectorArray(SK_ARRAY_COUNT(radii), radii);
         rrect.setRectRadii(rect, radii);
     }
     break;
     }
     return rrect;
 }

DEF_TEST(CanvasState_test_soft_clips, reporter) {
    SkBitmap bitmap;
    bitmap.allocN32Pixels(10, 10);
    SkCanvas canvas(bitmap);

    SkRRect roundRect;
    roundRect.setOval(SkRect::MakeWH(5, 5));

    canvas.clipRRect(roundRect, SkRegion::kIntersect_Op, true);

    SkSetErrorCallback(error_callback, NULL);

    SkCanvasState* state = SkCanvasStateUtils::CaptureCanvasState(&canvas);
    REPORTER_ASSERT(reporter, !state);

    REPORTER_ASSERT(reporter, kInvalidOperation_SkError == SkGetLastError());
    SkClearLastError();
}

void SkClipStack::Element::initPath(int saveCount, const SkPath& path, SkRegion::Op op,
                                    bool doAA) {
    if (!path.isInverseFillType()) {
        SkRect r;
        if (path.isRect(&r)) {
            this->initRect(saveCount, r, op, doAA);
            return;
        }
        SkRect ovalRect;
        if (path.isOval(&ovalRect)) {
            SkRRect rrect;
            rrect.setOval(ovalRect);
            this->initRRect(saveCount, rrect, op, doAA);
            return;
        }
    }
    fPath.set(path);
    fPath.get()->setIsVolatile(true);
    fType = kPath_Type;
    this->initCommon(saveCount, op, doAA);
}

    void onDraw(SkCanvas* canvas) override {
        // Set up a gradient paint for a rect.
        // And non-gradient paint for other objects.
        canvas->drawColor(SK_ColorWHITE);

        SkPaint paint;
        paint.setStyle(SkPaint::kFill_Style);
        paint.setAntiAlias(true);
        paint.setStrokeWidth(4);
        paint.setColor(0xFFFE938C);

        SkRect rect = SkRect::MakeXYWH(10, 10, 100, 160);

        SkPoint points[2] = {
            SkPoint::Make(0.0f, 0.0f),
            SkPoint::Make(256.0f, 256.0f)
        };
        SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
        SkPaint newPaint(paint);
        newPaint.setShader(SkGradientShader::MakeLinear(
                points, colors, nullptr, 2, SkTileMode::kClamp));
        canvas->drawRect(rect, newPaint);

        SkRRect oval;
        oval.setOval(rect);
        oval.offset(40, 80);
        paint.setColor(0xFFE6B89C);
        canvas->drawRRect(oval, paint);

        paint.setColor(0xFF9CAFB7);
        canvas->drawCircle(180, 50, 25, paint);

        rect.offset(80, 50);
        paint.setColor(0xFF4281A4);
        paint.setStyle(SkPaint::kStroke_Style);
        canvas->drawRoundRect(rect, 10, 10, paint);
    }

// Test out the case where an oval already off in space is translated/scaled 
// further off into space - yielding numerical issues when the rect & radii
// are transformed separatly
// BUG=skia:2696
static void test_issue_2696(skiatest::Reporter* reporter) {
    SkRRect rrect;
    SkRect r = { 28443.8594f, 53.1428604f, 28446.7148f, 56.0000038f };
    rrect.setOval(r);

    SkMatrix xform;
    xform.setAll(2.44f,  0.0f, 485411.7f,
                 0.0f,  2.44f,   -438.7f,
                 0.0f,   0.0f,      1.0f);
    SkRRect dst;

    bool success = rrect.transform(xform, &dst);
    REPORTER_ASSERT(reporter, success);

    SkScalar halfWidth = SkScalarHalf(dst.width());
    SkScalar halfHeight = SkScalarHalf(dst.height());

    for (int i = 0; i < 4; ++i) {
        REPORTER_ASSERT(reporter, 
                        SkScalarNearlyEqual(dst.radii((SkRRect::Corner)i).fX, halfWidth));
        REPORTER_ASSERT(reporter, 
                        SkScalarNearlyEqual(dst.radii((SkRRect::Corner)i).fY, halfHeight));
    }
}

SkRRect create_circle(const SkPoint& offset) {
    SkRRect circle;
    circle.setOval(create_rect(offset));
    return circle;
}