C++ SkRect::width方法代码示例

GLuint VideoLayerManager::createTextureFromImage(int buttonType)
{
    SkRect rect = SkRect(m_buttonRect);
    SkBitmap bitmap;
    bitmap.setConfig(SkBitmap::kARGB_8888_Config, rect.width(), rect.height());
    bitmap.allocPixels();
    bitmap.eraseColor(0);

    SkCanvas canvas(bitmap);
    canvas.drawARGB(0, 0, 0, 0, SkXfermode::kClear_Mode);
    RenderSkinMediaButton::Draw(&canvas, m_buttonRect, buttonType, true, 0,
                                false);

    GLuint texture;
    glGenTextures(1, &texture);

    GLUtils::createTextureWithBitmap(texture, bitmap);
    bitmap.reset();
    return texture;
}

static void test_inset(skiatest::Reporter* reporter) {
    SkRRect rr, rr2;
    SkRect r = { 0, 0, 100, 100 };

    rr.setRect(r);
    rr.inset(-20, -20, &rr2);
    REPORTER_ASSERT(reporter, rr2.isRect());

    rr.inset(20, 20, &rr2);
    REPORTER_ASSERT(reporter, rr2.isRect());

    rr.inset(r.width()/2, r.height()/2, &rr2);
    REPORTER_ASSERT(reporter, rr2.isEmpty());

    rr.setRectXY(r, 20, 20);
    rr.inset(19, 19, &rr2);
    REPORTER_ASSERT(reporter, rr2.isSimple());
    rr.inset(20, 20, &rr2);
    REPORTER_ASSERT(reporter, rr2.isRect());
}

static void getGlyphMetrics(HB_Font hbFont, HB_Glyph glyph, HB_GlyphMetrics* metrics)
{
    SkPaint* paint = static_cast<SkPaint*>(hbFont->userData);
    paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);

    uint16_t glyph16 = glyph;
    SkScalar width;
    SkRect bounds;
    paint->getTextWidths(&glyph16, sizeof(glyph16), &width, &bounds);

    metrics->x = SkScalarToHBFixed(bounds.fLeft);
    metrics->y = SkScalarToHBFixed(bounds.fTop);
    metrics->width = SkScalarToHBFixed(bounds.width());
    metrics->height = SkScalarToHBFixed(bounds.height());

    metrics->xOffset = SkScalarToHBFixed(width);
    // We can't actually get the |y| correct because Skia doesn't export
    // the vertical advance. However, nor we do ever render vertical text at
    // the moment so it's unimportant.
    metrics->yOffset = 0;
}

void SkPDFDevice::drawRect(const SkDraw& d, const SkRect& r,
                           const SkPaint& paint) {
    if (paint.getPathEffect()) {
        // Create a path for the rectangle and apply the path effect to it.
        SkPath path;
        path.addRect(r);
        paint.getFillPath(path, &path);

        SkPaint noEffectPaint(paint);
        SkSafeUnref(noEffectPaint.setPathEffect(NULL));
        drawPath(d, path, noEffectPaint, NULL, true);
        return;
    }
    updateGSFromPaint(paint, false);

    // Skia has 0,0 at top left, pdf at bottom left.  Do the right thing.
    SkScalar bottom = r.fBottom < r.fTop ? r.fBottom : r.fTop;
    SkPDFUtils::AppendRectangle(r.fLeft, bottom, r.width(), r.height(),
                                &fContent);
    SkPDFUtils::PaintPath(paint.getStyle(), SkPath::kWinding_FillType,
                          &fContent);
}

DEF_FUZZ(PathMeasure, fuzz) {
    uint8_t bits;
    fuzz->next(&bits);
    SkScalar distance[6];
    for (auto index = 0; index < 6; ++index) {
        fuzz->next(&distance[index]);
    }
    SkPath path;
    BuildPath(fuzz, &path, SkPath::Verb::kDone_Verb);
    SkRect bounds = path.getBounds();
    SkScalar maxDim = SkTMax(bounds.width(), bounds.height());
    SkScalar resScale = maxDim / 1000;
    SkPathMeasure measure(path, bits & 1, resScale);
    SkPoint position;
    SkVector tangent;
    ignoreResult(measure.getPosTan(distance[0], &position, &tangent));
    SkPath dst;
    ignoreResult(measure.getSegment(distance[1], distance[2], &dst, (bits >> 1) & 1));
    ignoreResult(measure.nextContour());
    ignoreResult(measure.getPosTan(distance[3], &position, &tangent));
    ignoreResult(measure.getSegment(distance[4], distance[5], &dst, (bits >> 2) & 1));
}

std::unique_ptr<GrFragmentProcessor> GrMagnifierEffect::TestCreate(GrProcessorTestData* d) {
    sk_sp<GrTextureProxy> proxy = d->textureProxy(0);
    const int kMaxWidth = 200;
    const int kMaxHeight = 200;
    const SkScalar kMaxInset = 20.0f;
    uint32_t width = d->fRandom->nextULessThan(kMaxWidth);
    uint32_t height = d->fRandom->nextULessThan(kMaxHeight);
    SkScalar inset = d->fRandom->nextRangeScalar(1.0f, kMaxInset);

    SkIRect bounds = SkIRect::MakeWH(SkIntToScalar(kMaxWidth), SkIntToScalar(kMaxHeight));
    SkRect srcRect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height));

    auto effect = GrMagnifierEffect::Make(std::move(proxy),
                                          bounds,
                                          srcRect,
                                          srcRect.width() / bounds.width(),
                                          srcRect.height() / bounds.height(),
                                          bounds.width() / inset,
                                          bounds.height() / inset);
    SkASSERT(effect);
    return effect;
}

void Viewer::setupCurrentSlide(int previousSlide) {
    if (fCurrentSlide == previousSlide) {
        return; // no change; do nothing
    }

    // prepare dimensions for image slides
    fSlides[fCurrentSlide]->load(SkIntToScalar(fWindow->width()), SkIntToScalar(fWindow->height()));

    fGesture.reset();
    fDefaultMatrix.reset();
    fDefaultMatrixInv.reset();

    if (fWindow->supportsContentRect() && fWindow->scaleContentToFit()) {
        const SkRect contentRect = fWindow->getContentRect();
        const SkISize slideSize = fSlides[fCurrentSlide]->getDimensions();
        const SkRect slideBounds = SkRect::MakeIWH(slideSize.width(), slideSize.height());
        if (contentRect.width() > 0 && contentRect.height() > 0) {
            fDefaultMatrix.setRectToRect(slideBounds, contentRect, SkMatrix::kStart_ScaleToFit);
            SkAssertResult(fDefaultMatrix.invert(&fDefaultMatrixInv));
        }
    }

    if (fWindow->supportsContentRect()) {
        const SkISize slideSize = fSlides[fCurrentSlide]->getDimensions();
        SkRect windowRect = fWindow->getContentRect();
        fDefaultMatrixInv.mapRect(&windowRect);
        fGesture.setTransLimit(SkRect::MakeWH(SkIntToScalar(slideSize.width()), 
                                              SkIntToScalar(slideSize.height())),
                               windowRect);
    }

    this->updateTitle();
    this->updateUIState();
    if (previousSlide >= 0) {
        fSlides[previousSlide]->unload();
    }
    fWindow->inval();
}

    virtual void onDraw(SkCanvas* canvas) {
        SkPath path;
        path.moveTo(0, 0);
        path.cubicTo(140, 150, 40, 10, 170, 150);

        SkPaint paint;
        SkRect bounds = path.getBounds();

        for (SkScalar dy = -1; dy <= 1; dy += 1) {
            canvas->save();
            for (SkScalar dx = -1; dx <= 1; dx += 1) {
                canvas->save();
                canvas->clipRect(bounds);
                canvas->translate(dx, dy);
                canvas->drawPath(path, paint);
                canvas->restore();

                canvas->translate(bounds.width(), 0);
            }
            canvas->restore();
            canvas->translate(0, bounds.height());
        }
    }

sk_sp<SkSpecialImage> SkImageFilter::DrawWithFP(GrContext* context,
                                                sk_sp<GrFragmentProcessor> fp,
                                                const SkIRect& bounds) {
    GrPaint paint;
    paint.addColorFragmentProcessor(fp.get());
    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    sk_sp<GrDrawContext> drawContext(context->newDrawContext(GrContext::kLoose_BackingFit,
                                                             bounds.width(), bounds.height(),
                                                             kRGBA_8888_GrPixelConfig));
    if (!drawContext) {
        return nullptr;
    }

    SkRect srcRect = SkRect::Make(bounds);
    SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
    GrClip clip(dstRect);
    drawContext->fillRectToRect(clip, paint, SkMatrix::I(), dstRect, srcRect);

    return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                       kNeedNewImageUniqueID_SpecialImage,
                                       drawContext->asTexture());
}

static void SkiaGetGlyphWidthAndExtents(SkPaint* paint, hb_codepoint_t codepoint, hb_position_t* width, hb_glyph_extents_t* extents)
{
    ALOG_ASSERT(codepoint <= 0xFFFF);
    paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);

    SkScalar skWidth;
    SkRect skBounds;
    uint16_t glyph = codepoint;

    paint->getTextWidths(&glyph, sizeof(glyph), &skWidth, &skBounds);
    if (kDebugGlyphs) {
        ALOGD("returned glyph for %i: width = %f", codepoint, skWidth);
    }
    if (width)
        *width = SkScalarToHBFixed(skWidth);
    if (extents) {
        // Invert y-axis because Skia is y-grows-down but we set up harfbuzz to be y-grows-up.
        extents->x_bearing = SkScalarToHBFixed(skBounds.fLeft);
        extents->y_bearing = SkScalarToHBFixed(-skBounds.fTop);
        extents->width = SkScalarToHBFixed(skBounds.width());
        extents->height = SkScalarToHBFixed(-skBounds.height());
    }
}

static void toString(const SkRRect& rrect, SkString* str) {
    SkRect r = rrect.getBounds();
    str->appendf("[%g,%g %g:%g]",
                 SkScalarToFloat(r.fLeft), SkScalarToFloat(r.fTop),
                 SkScalarToFloat(r.width()), SkScalarToFloat(r.height()));
    if (rrect.isOval()) {
        str->append("()");
    } else if (rrect.isSimple()) {
        const SkVector& rad = rrect.getSimpleRadii();
        str->appendf("(%g,%g)", rad.x(), rad.y());
    } else if (rrect.isComplex()) {
        SkVector radii[4] = {
            rrect.radii(SkRRect::kUpperLeft_Corner),
            rrect.radii(SkRRect::kUpperRight_Corner),
            rrect.radii(SkRRect::kLowerRight_Corner),
            rrect.radii(SkRRect::kLowerLeft_Corner),
        };
        str->appendf("(%g,%g %g,%g %g,%g %g,%g)",
                     radii[0].x(), radii[0].y(),
                     radii[1].x(), radii[1].y(),
                     radii[2].x(), radii[2].y(),
                     radii[3].x(), radii[3].y());
    }
}

bool SkImageSource::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                            SkBitmap* result, SkIPoint* offset) const {
    SkRect dstRect;
    ctx.ctm().mapRect(&dstRect, fDstRect);
    SkRect bounds = SkRect::MakeIWH(fImage->width(), fImage->height());
    if (fSrcRect == bounds && dstRect == bounds) {
        // No regions cropped out or resized; return entire image.
        offset->fX = offset->fY = 0;
        return fImage->asLegacyBitmap(result, SkImage::kRO_LegacyBitmapMode);
    }

    const SkIRect dstIRect = dstRect.roundOut();
    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(dstIRect.width(), dstIRect.height()));
    if (nullptr == device.get()) {
        return false;
    }

    SkCanvas canvas(device.get());
    SkPaint paint;

    // Subtract off the integer component of the translation (will be applied in loc, below).
    dstRect.offset(-SkIntToScalar(dstIRect.fLeft), -SkIntToScalar(dstIRect.fTop));
    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
    // FIXME: this probably shouldn't be necessary, but drawImageRect asserts
    // None filtering when it's translate-only
    paint.setFilterQuality(
        fSrcRect.width() == dstRect.width() && fSrcRect.height() == dstRect.height() ?
               kNone_SkFilterQuality : fFilterQuality);
    canvas.drawImageRect(fImage, fSrcRect, dstRect, &paint, SkCanvas::kStrict_SrcRectConstraint);

    *result = device.get()->accessBitmap(false);
    offset->fX = dstIRect.fLeft;
    offset->fY = dstIRect.fTop;

    return true;
}

 void bounceMe() {
     SkScalar width = fSrcR.width();
     bounce(&fSrcR.fLeft, &fDX, fLimitR.fLeft, fLimitR.fRight - width);
     fSrcR.fRight = fSrcR.fLeft + width;
 }

 *
 *  The portion in the layer, will end up SRC_OVERing the 0x80 layer pixels onto the canvas' red
 *  pixels, making magenta.
 *
 *  Thus the expected result is the upper half to be magenta 0xFF7F0080, and the lower half to be
 *  light blue 0xFF7F7FFF.
 */
DEF_SIMPLE_GM(dont_clip_to_layer, canvas, 120, 120) {
    const SkRect r { 10, 10, 110, 110 };

    // Wrap the entire test inside a red layer, so we don't punch the actual gm's alpha with
    // kSrc_Mode, which makes it hard to view (we like our GMs to have opaque pixels).
    canvas->saveLayer(&r, nullptr);
    canvas->drawColor(SK_ColorRED);

    SkRect r0 = SkRect::MakeXYWH(r.left(), r.top(), r.width(), r.height()/2);

    SkCanvas::SaveLayerRec rec;
    rec.fPaint = nullptr;
    rec.fBounds = &r0;
    rec.fBackdrop = nullptr;
    rec.fSaveLayerFlags = 1 << 31;//SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag;
    canvas->saveLayer(rec);
    do_draw(canvas, r);
    canvas->restore();

    canvas->restore();  // red-layer
}

/** Draw a 2px border around the target, then red behind the target;
    set the clip to match the target, then draw >> the target in blue.

bool VideoLayerAndroid::drawGL()
{
    // Lazily allocated the textures.
    if (!m_createdTexture) {
        m_backgroundTextureId = createBackgroundTexture();
        m_spinnerOuterTextureId = createSpinnerOuterTexture();
        m_spinnerInnerTextureId = createSpinnerInnerTexture();
        m_posterTextureId = createPosterTexture();
        m_createdTexture = true;
    }

    SkRect rect = SkRect::MakeSize(getSize());
    GLfloat surfaceMatrix[16];

    SkRect innerRect = SkRect(buttonRect);
    if (innerRect.contains(rect))
        innerRect = rect;

    innerRect.offset((rect.width() - IMAGESIZE) / 2 , (rect.height() - IMAGESIZE) / 2);

    // Draw the poster image, the progressing image or the Video depending
    // on the player's state.
    if (m_playerState == PREPARING) {
        // Show the progressing animation, with two rotating circles
		// SSG
		if (m_surfaceTexture.get() && (m_surfaceTexture->getTimestamp() > 0)) {
			m_surfaceTexture->getTransformMatrix(surfaceMatrix);
			GLuint textureId =
				TilesManager::instance()->videoLayerManager()->getTextureId(uniqueId());
			TilesManager::instance()->shader()->drawVideoLayerQuad(m_drawTransform,
					surfaceMatrix,
					rect, textureId);
			TilesManager::instance()->videoLayerManager()->updateMatrix(uniqueId(),
					surfaceMatrix);
		} else {
			TilesManager::instance()->shader()->drawLayerQuad(m_drawTransform, rect,
					m_backgroundTextureId,
					1, true);
		}

        TransformationMatrix addReverseRotation;
        TransformationMatrix addRotation = m_drawTransform;
        addRotation.translate(innerRect.fLeft, innerRect.fTop);
        addRotation.translate(IMAGESIZE / 2, IMAGESIZE / 2);
        addReverseRotation = addRotation;
        addRotation.rotate(m_rotateDegree);
        addRotation.translate(-IMAGESIZE / 2, -IMAGESIZE / 2);

        SkRect size = SkRect::MakeWH(innerRect.width(), innerRect.height());
        TilesManager::instance()->shader()->drawLayerQuad(addRotation, size,
                                                          m_spinnerOuterTextureId,
                                                          1, true);

        addReverseRotation.rotate(-m_rotateDegree);
        addReverseRotation.translate(-IMAGESIZE / 2, -IMAGESIZE / 2);

        TilesManager::instance()->shader()->drawLayerQuad(addReverseRotation, size,
                                                          m_spinnerInnerTextureId,
                                                          1, true);

        m_rotateDegree += ROTATESTEP;

    } else if (m_playerState == PLAYING && m_surfaceTexture.get()) {
        // Show the real video.
        m_surfaceTexture->updateTexImage();
        m_surfaceTexture->getTransformMatrix(surfaceMatrix);
        GLuint textureId =
            TilesManager::instance()->videoLayerManager()->getTextureId(uniqueId());
        TilesManager::instance()->shader()->drawVideoLayerQuad(m_drawTransform,
                                                               surfaceMatrix,
                                                               rect, textureId);
        TilesManager::instance()->videoLayerManager()->updateMatrix(uniqueId(),
                                                                    surfaceMatrix);
    } else {
        GLuint textureId =
            TilesManager::instance()->videoLayerManager()->getTextureId(uniqueId());
        GLfloat* matrix =
            TilesManager::instance()->videoLayerManager()->getMatrix(uniqueId());
        if (textureId && matrix) {
            // Show the screen shot for each video.
            TilesManager::instance()->shader()->drawVideoLayerQuad(m_drawTransform,
                                                               matrix,
                                                               rect, textureId);
        } else {
            // Show the static poster b/c there is no screen shot available.
            TilesManager::instance()->shader()->drawLayerQuad(m_drawTransform, rect,
                                                              m_backgroundTextureId,
                                                              1, true);
            TilesManager::instance()->shader()->drawLayerQuad(m_drawTransform, innerRect,
                                                              m_posterTextureId,
                                                              1, true);
        }
    }

    return drawChildrenGL();
}