C++ SkPicture::cullRect方法代码示例

static SkPicture* inspect(const char path[]) {
    SkFILEStream stream(path);
    if (!stream.isValid()) {
        printf("-- Can't open '%s'\n", path);
        return nullptr;
    }

    printf("Opening '%s'...\n", path);

    {
        int32_t header[3];
        if (stream.read(header, sizeof(header)) != sizeof(header)) {
            printf("-- Failed to read header (12 bytes)\n");
            return nullptr;
        }
        printf("version:%d width:%d height:%d\n", header[0], header[1], header[2]);
    }

    stream.rewind();
    SkPicture* pic = SkPicture::CreateFromStream(&stream);
    if (nullptr == pic) {
        SkDebugf("Could not create SkPicture: %s\n", path);
        return nullptr;
    }
    printf("picture cullRect: [%f %f %f %f]\n", 
           pic->cullRect().fLeft, pic->cullRect().fTop,
           pic->cullRect().fRight, pic->cullRect().fBottom);
    return pic;
}

static SkBitmap draw_picture(SkPicture& picture) {
     SkBitmap bitmap;
     bitmap.allocN32Pixels(SkScalarCeilToInt(picture.cullRect().width()),
                           SkScalarCeilToInt(picture.cullRect().height()));
     SkCanvas canvas(bitmap);
     picture.playback(&canvas);
     return bitmap;
}

static void rerecord(const SkPicture& src, SkBBHFactory* bbhFactory) {
    SkPictureRecorder recorder;
    if (FLAGS_skr) {
        src.playback(recorder.EXPERIMENTAL_beginRecording(src.cullRect().width(), 
                                                      src.cullRect().height(), 
                                                      bbhFactory));
    } else {
        src.playback(recorder.  DEPRECATED_beginRecording(src.cullRect().width(), 
                                                      src.cullRect().height(), 
                                                      bbhFactory));
    }
    SkAutoTUnref<SkPicture> pic(recorder.endRecording());
}

PassRefPtr<JSONObject> LoggingCanvas::objectForSkPicture(const SkPicture& picture)
{
    const SkIRect bounds = picture.cullRect().roundOut();
    RefPtr<JSONObject> pictureItem = JSONObject::create();
    pictureItem->setNumber("width", bounds.width());
    pictureItem->setNumber("height", bounds.height());
    return pictureItem.release();
}

// Do the commands in 'input' match the supplied pattern? Note: this is a pretty
// heavy-weight operation since we are drawing the picture into a debug canvas
// to extract the commands.
static bool check_pattern(SkPicture& input, const SkTDArray<DrawType> &pattern) {
    SkDebugCanvas debugCanvas(SkScalarCeilToInt(input.cullRect().width()), 
                              SkScalarCeilToInt(input.cullRect().height()));
    input.draw(&debugCanvas);

    if (pattern.count() != debugCanvas.getSize()) {
        return false;
    }

    for (int i = 0; i < pattern.count(); ++i) {
        if (pattern[i] != debugCanvas.getDrawCommandAt(i)->getType()) {
            return false;
        }
    }

    return true;
}

void TestResult::testOne() {
    SkPicture* pic = nullptr;
    {
    #if DEBUG_SHOW_TEST_NAME
        if (fTestStep == kCompareBits) {
            SkString testName(fFilename);
            const char http[] = "http";
            if (testName.startsWith(http)) {
                testName.remove(0, sizeof(http) - 1);
            }
            while (testName.startsWith("_")) {
                testName.remove(0, 1);
            }
            const char dotSkp[] = ".skp";
            if (testName.endsWith(dotSkp)) {
                size_t len = testName.size();
                testName.remove(len - (sizeof(dotSkp) - 1), sizeof(dotSkp) - 1);
            }
            testName.prepend("skp");
            testName.append("1");
            strncpy(DEBUG_FILENAME_STRING, testName.c_str(), DEBUG_FILENAME_STRING_LENGTH);
        } else if (fTestStep == kEncodeFiles) {
            strncpy(DEBUG_FILENAME_STRING, "", DEBUG_FILENAME_STRING_LENGTH);
        }
    #endif
        SkString path = get_in_path(fDirNo, fFilename);
        SkFILEStream stream(path.c_str());
        if (!stream.isValid()) {
            SkDebugf("invalid stream %s\n", path.c_str());
            goto finish;
        }
        pic = SkPicture::CreateFromStream(&stream, &SkImageDecoder::DecodeMemory);
        if (!pic) {
            SkDebugf("unable to decode %s\n", fFilename);
            goto finish;
        }
        SkScalar width = pic->cullRect().width();
        SkScalar height = pic->cullRect().height();
        SkBitmap oldBitmap, opBitmap;
        fScale = 1;
        while (width / fScale > 32767 || height / fScale > 32767) {
            ++fScale;
        }
        do {
            int dimX = SkScalarCeilToInt(width / fScale);
            int dimY = SkScalarCeilToInt(height / fScale);
            if (oldBitmap.tryAllocN32Pixels(dimX, dimY) && opBitmap.tryAllocN32Pixels(dimX, dimY)) {
                break;
            }
            SkDebugf("-%d-", fScale);
        } while (++fScale < 256);
        if (fScale >= 256) {
            SkDebugf("unable to allocate bitmap for %s (w=%f h=%f)\n", fFilename,
                    width, height);
            goto finish;
        }
        oldBitmap.eraseColor(SK_ColorWHITE);
        SkCanvas oldCanvas(oldBitmap);
        oldCanvas.setAllowSimplifyClip(false);
        opBitmap.eraseColor(SK_ColorWHITE);
        SkCanvas opCanvas(opBitmap);
        opCanvas.setAllowSimplifyClip(true);
        drawPict(pic, &oldCanvas, fScale);
        drawPict(pic, &opCanvas, fScale);
        if (fTestStep == kCompareBits) {
            fPixelError = similarBits(oldBitmap, opBitmap);
            int oldTime = timePict(pic, &oldCanvas);
            int opTime = timePict(pic, &opCanvas);
            fTime = SkTMax(0, oldTime - opTime);
        } else if (fTestStep == kEncodeFiles) {
            SkString pngStr = make_png_name(fFilename);
            const char* pngName = pngStr.c_str();
            writePict(oldBitmap, outOldDir, pngName);
            writePict(opBitmap, outOpDir, pngName);
        }
    }
finish:
    if (pic) {
        pic->unref();
    }
}