C++ SkTArray::push_back方法代码示例

void CubicToQuads(const SkDCubic& cubic, double precision, SkTArray<SkDQuad, true>& quads) {
    SkTArray<double, true> ts;
    toQuadraticTs(&cubic, precision, &ts);
    if (ts.count() <= 0) {
        SkDQuad quad = cubic.toQuad();
        quads.push_back(quad);
        return;
    }
    double tStart = 0;
    for (int i1 = 0; i1 <= ts.count(); ++i1) {
        const double tEnd = i1 < ts.count() ? ts[i1] : 1;
        SkDRect bounds;
        bounds.setBounds(cubic);
        SkDCubic part = cubic.subDivide(tStart, tEnd);
        SkDQuad quad = part.toQuad();
        if (quad[1].fX < bounds.fLeft) {
            quad[1].fX = bounds.fLeft;
        } else if (quad[1].fX > bounds.fRight) {
            quad[1].fX = bounds.fRight;
        }
        if (quad[1].fY < bounds.fTop) {
            quad[1].fY = bounds.fTop;
        } else if (quad[1].fY > bounds.fBottom) {
            quad[1].fY = bounds.fBottom;
        }
        quads.push_back(quad);
        tStart = tEnd;
    }
}

static void handle_cmd(struct android_app* app, int32_t cmd) {
    struct VisualBenchState* state = (struct VisualBenchState*)app->userData;
    switch (cmd) {
        case APP_CMD_INIT_WINDOW:
            // The window is being shown, get it ready.
            if (state->fApp->window != nullptr && kInit_State == state->fState) {
                // drain any events that occurred before |window| was assigned.
                while (SkEvent::ProcessEvent());

                // Start normal Skia sequence
                application_init();

                SkTArray<const char*> args;
                args.push_back("VisualBench");
                for (int i = 0; i < state->fFlags.count(); i++) {
                    SkDebugf(state->fFlags[i].c_str());
                    args.push_back(state->fFlags[i].c_str());
                }

                state->fWindow = create_sk_window((void*)state->fApp->window,
                                                  args.count(),
                                                  const_cast<char**>(args.begin()));
                state->fWindow->forceInvalAll();
                state->fState = kAnimate_State;
            }
            break;
        case APP_CMD_TERM_WINDOW:
            state->fState = kDestroyRequested_State;
            break;
    }
}

    void onDraw(SkCanvas* canvas) override {
        // This GM exists to test a specific feature of the GPU backend. It does not work with the
        // sw rasterizer, tile modes, etc.
        if (nullptr == canvas->getGrContext()) {
            skiagm::GM::DrawGpuOnlyMessage(canvas);
            return;
        }
        SkPaint paint;
        SkTArray<SkMatrix> devMats;
        devMats.push_back().reset();
        devMats.push_back().setRotate(45, 500, 500);
        devMats.push_back().setRotate(-30, 200, 200);
        devMats.back().setPerspX(-SK_Scalar1 / 2000);
        devMats.back().setPerspY(SK_Scalar1 / 1000);


        SkTArray<SkMatrix> viewMats;
        viewMats.push_back().setScale(0.75f, 0.75f);
        viewMats.push_back().setRotate(45, 50, 50);
        viewMats.back().postScale(0.5f, 1.1f);

        canvas->translate(10, 20);
        canvas->save();
        SkScalar tx = 0, maxTy = 0;
        static const SkScalar kW = 900;

        for (int aa = 0; aa < 2; ++aa) {
            for (int i = 0; i < fPrims.count(); ++i) {
                for (int j = 0; j < devMats.count(); ++j) {
                    for (int k = 0; k < viewMats.count(); ++k) {
                        paint.setShader(new DCShader(devMats[j]))->unref();
                        paint.setAntiAlias(SkToBool(aa));
                        canvas->save();
                        canvas->concat(viewMats[k]);
                        SkRect bounds = fPrims[i]->draw(canvas, paint);
                        canvas->restore();
                        viewMats[k].mapRect(&bounds);
                        // add margins
                        bounds.fRight += 20;
                        bounds.fBottom += 20;
                        canvas->translate(bounds.fRight, 0);
                        tx += bounds.fRight;
                        maxTy = SkTMax(bounds.fBottom, maxTy);
                        if (tx > kW) {
                            tx = 0;
                            canvas->restore();
                            canvas->translate(0, maxTy);
                            canvas->save();
                            maxTy = 0;
                        }
                    }
                }
            }
        }
        canvas->restore();
    }

/**
 *  Helper function to write a bitmap subset to a file. Only called if subsets were created
 *  and a writePath was provided. Behaves differently depending on
 *  FLAGS_writeChecksumBasedFilenames. If true:
 *      Writes the image to a PNG file named according to the digest hash, as described in
 *      write_bitmap.
 *  If false:
 *      Creates a subdirectory called 'subsets' and writes a PNG to that directory. Also
 *      creates a subdirectory called 'extracted' and writes a bitmap created using
 *      extractSubset to a PNG in that directory. Both files will represent the same
 *      subrectangle and have the same name for convenient comparison. In this case, the
 *      digest is ignored.
 *
 *  @param writePath Parent directory to hold the folders for the PNG files to write. Must
 *      not be NULL.
 *  @param subsetName Basename of the original file, with the dimensions of the subset tacked
 *      on. Used to name the new file/folder.
 *  @param bitmapAndDigestFromDecodeSubset SkBitmap (with digest) created by
 *      SkImageDecoder::DecodeSubset, using rect as the area to decode.
 *  @param rect Rectangle of the area decoded into bitmapFromDecodeSubset. Used to call
 *      extractSubset on originalBitmap to create a bitmap with the same dimensions/pixels as
 *      bitmapFromDecodeSubset (assuming decodeSubset worked properly).
 *  @param originalBitmap SkBitmap decoded from the same stream as bitmapFromDecodeSubset,
 *      using SkImageDecoder::decode to get the entire image. Used to create a PNG file for
 *      comparison to the PNG created by bitmapAndDigestFromDecodeSubset's bitmap.
 *  @return bool Whether the function succeeded at drawing the decoded subset and the extracted
 *      subset to files.
 */
static bool write_subset(const char* writePath, const SkString& subsetName,
                         const skiagm::BitmapAndDigest bitmapAndDigestFromDecodeSubset,
                         SkIRect rect, const SkBitmap& originalBitmap) {
    // All parameters must be valid.
    SkASSERT(writePath != NULL);

    SkString subsetPath;
    if (FLAGS_writeChecksumBasedFilenames) {
        subsetPath.set(writePath);
    } else {
        // Create a subdirectory to hold the results of decodeSubset.
        subsetPath = SkOSPath::SkPathJoin(writePath, "subsets");
        if (!sk_mkdir(subsetPath.c_str())) {
            gFailedSubsetDecodes.push_back().printf("Successfully decoded subset %s, but "
                                                    "failed to create a directory to write to.",
                                                    subsetName.c_str());
            return false;
        }
    }
    SkAssertResult(write_bitmap(subsetPath.c_str(), subsetName.c_str(),
                                bitmapAndDigestFromDecodeSubset));
    gSuccessfulSubsetDecodes.push_back().printf("\twrote %s", subsetName.c_str());

    if (!FLAGS_writeChecksumBasedFilenames) {
        // FIXME: The goal of extracting the subset is for visual comparison/using skdiff/skpdiff.
        // Currently disabling for writeChecksumBasedFilenames since it will be trickier to
        // determine which files to compare.

        // Also use extractSubset from the original for visual comparison.
        // Write the result to a file in a separate subdirectory.
        SkBitmap extractedSubset;
        if (!originalBitmap.extractSubset(&extractedSubset, rect)) {
            gFailedSubsetDecodes.push_back().printf("Successfully decoded subset %s, but failed "
                                                    "to extract a similar subset for comparison.",
                                                    subsetName.c_str());
            return false;
        }

        SkString dirExtracted = SkOSPath::SkPathJoin(writePath, "extracted");
        if (!sk_mkdir(dirExtracted.c_str())) {
            gFailedSubsetDecodes.push_back().printf("Successfully decoded subset%s, but failed "
                                                    "to create a directory for extractSubset "
                                                    "comparison.",
                                                    subsetName.c_str());
            return false;
        }

        skiagm::BitmapAndDigest bitmapAndDigestFromExtractSubset(extractedSubset);
        SkAssertResult(write_bitmap(dirExtracted.c_str(), subsetName.c_str(),
                                    bitmapAndDigestFromExtractSubset));
    }
    return true;
}

JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_init(JNIEnv* env,
        jobject thiz, jobject jsampleActivity, jint msaaSampleCount)
{
    // setup jni hooks to the java activity
    gActivityGlue.m_env = env;
    jclass clazz = env->FindClass("com/skia/SkiaSampleActivity");
    gActivityGlue.m_obj = env->NewWeakGlobalRef(jsampleActivity);
    gActivityGlue.m_setTitle = GetJMethod(env, clazz, "setTitle", "(Ljava/lang/CharSequence;)V");
    gActivityGlue.m_setSlideList = GetJMethod(env, clazz, "setSlideList", "([Ljava/lang/String;)V");
    gActivityGlue.m_addToDownloads = GetJMethod(env, clazz, "addToDownloads",
            "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V");
    env->DeleteLocalRef(clazz);

    // setup jni hooks to the java renderer
    clazz = env->FindClass("com/skia/SkiaSampleRenderer");
    gWindowGlue.m_obj = env->NewWeakGlobalRef(thiz);
    gWindowGlue.m_inval = GetJMethod(env, clazz, "requestRender", "()V");
    gWindowGlue.m_queueSkEvent = GetJMethod(env, clazz, "queueSkEvent", "()V");
    gWindowGlue.m_startTimer = GetJMethod(env, clazz, "startTimer", "(I)V");
    gWindowGlue.m_getMSAASampleCount = GetJMethod(env, clazz, "getMSAASampleCount", "()I");
    env->DeleteLocalRef(clazz);

    application_init();
    SkTArray<const char*> args;

    args.push_back("SampleApp");
    // TODO: push ability to select skp dir into the UI
    args.push_back("--pictureDir");
    args.push_back("/sdcard/skiabot/skia_skp");

    SkString msaaSampleCountString;
    if (msaaSampleCount > 0) {
        args.push_back("--msaa");
        msaaSampleCountString.appendS32(static_cast<uint32_t>(msaaSampleCount));
        args.push_back(msaaSampleCountString.c_str());
    }

    gWindow = new SampleWindow(NULL, args.count(), const_cast<char**>(args.begin()), NULL);

    // send the list of slides up to the activity
    const int slideCount = gWindow->sampleCount();
    jobjectArray slideList = env->NewObjectArray(slideCount, env->FindClass("java/lang/String"), env->NewStringUTF(""));
    for (int i = 0; i < slideCount; i++) {
        jstring slideTitle = env->NewStringUTF(gWindow->getSampleTitle(i).c_str());
        env->SetObjectArrayElement(slideList, i, slideTitle);
        env->DeleteLocalRef(slideTitle);
    }
    env->CallVoidMethod(gActivityGlue.m_obj, gActivityGlue.m_setSlideList, slideList);
    env->DeleteLocalRef(slideList);
}

    CameraView() {
        fRX = fRY = fRZ = 0;
        fShaderIndex = 0;
        fFrontFace = false;

        for (int i = 0;; i++) {
            SkString str;
            str.printf("/skimages/elephant%d.jpeg", i);
            SkBitmap bm;
            if (decode_file(str.c_str(), &bm)) {
                SkRect src = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
                SkRect dst = { -150, -150, 150, 150 };
                SkMatrix matrix;
                matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit);

                fShaders.push_back(SkShader::MakeBitmapShader(bm,
                                                           SkShader::kClamp_TileMode,
                                                           SkShader::kClamp_TileMode,
                                                           &matrix));
            } else {
                break;
            }
        }
        this->setBGColor(0xFFDDDDDD);
    }

void GLCpuPosInstancedArraysBench::setupSingleVbo(const GrGLInterface* gl,
                                                  const SkMatrix* viewMatrices) {
    // Constants for our various shader programs
    Vertex vertices[kVerticesPerTri * kNumTri];
    for (uint32_t i = 0; i < kNumTri; i++) {
        Vertex* v = &vertices[i * kVerticesPerTri];
        v[0].fPositions.set(-1.0f, -1.0f);
        v[1].fPositions.set( 1.0f, -1.0f);
        v[2].fPositions.set( 1.0f,  1.0f);

        SkPoint* position = reinterpret_cast<SkPoint*>(v);
        viewMatrices[i].mapPointsWithStride(position, sizeof(Vertex), kVerticesPerTri);

        // set colors
        float color = i == kNumTri - 1 ? 1.0f : 0.0f;
        for (uint32_t j = 0; j < kVerticesPerTri; j++) {
            uint32_t offset = 0;
            v->fColors[offset++] = color; v->fColors[offset++] = 0.0f; v->fColors[offset++] = 0.0f;
            v++;
        }
    }

    GrGLuint vbo;
    // setup VBO
    GR_GL_CALL(gl, GenBuffers(1, &vbo));
    GR_GL_CALL(gl, BindBuffer(GR_GL_ARRAY_BUFFER, vbo));
    GR_GL_CALL(gl, EnableVertexAttribArray(0));
    GR_GL_CALL(gl, EnableVertexAttribArray(1));
    GR_GL_CALL(gl, VertexAttribPointer(0, 2, GR_GL_FLOAT, GR_GL_FALSE, sizeof(Vertex),
                                       (GrGLvoid*)0));
    GR_GL_CALL(gl, VertexAttribPointer(1, 3, GR_GL_FLOAT, GR_GL_FALSE, sizeof(Vertex),
                                       (GrGLvoid*)(sizeof(SkPoint))));
    GR_GL_CALL(gl, BufferData(GR_GL_ARRAY_BUFFER, sizeof(vertices), vertices, GR_GL_STATIC_DRAW));
    fBuffers.push_back(vbo);
}

    int FindOrAdd(IDWriteFontFileLoader* fontFileLoader,
                  const void* refKey, UINT32 refKeySize) const
    {
        SkTScopedComPtr<IUnknown> fontFileLoaderId;
        HR_GENERAL(fontFileLoader->QueryInterface(&fontFileLoaderId),
                   "Failed to re-convert to IDWriteFontFileLoader.",
                   SkFontIdentity::kInvalidDataId);

        SkAutoMutexAcquire ama(fDataIdCacheMutex);
        int count = fDataIdCache.count();
        int i;
        for (i = 0; i < count; ++i) {
            const DataId& current = fDataIdCache[i];
            if (fontFileLoaderId.get() == current.fLoader &&
                refKeySize == current.fKeySize &&
                0 == memcmp(refKey, current.fKey, refKeySize))
            {
                return i;
            }
        }
        DataId& added = fDataIdCache.push_back();
        added.fLoader = fontFileLoaderId.release();  // Ref is passed.
        added.fKey = sk_malloc_throw(refKeySize);
        memcpy(added.fKey, refKey, refKeySize);
        added.fKeySize = refKeySize;

        return i;
    }

static void push_sink(const SkCommandLineConfig& config, Sink* s) {
    SkAutoTDelete<Sink> sink(s);

    // Try a simple Src as a canary.  If it fails, skip this sink.
    struct : public Src {
        Error draw(SkCanvas* c) const override {
            c->drawRect(SkRect::MakeWH(1,1), SkPaint());
            return "";
        }
        SkISize size() const override { return SkISize::Make(16, 16); }
        Name name() const override { return "justOneRect"; }
    } justOneRect;

    SkBitmap bitmap;
    SkDynamicMemoryWStream stream;
    SkString log;
    Error err = sink->draw(justOneRect, &bitmap, &stream, &log);
    if (err.isFatal()) {
        info("Could not run %s: %s\n", config.getTag().c_str(), err.c_str());
        exit(1);
    }

    TaggedSink& ts = gSinks.push_back();
    ts.reset(sink.release());
    ts.tag = config.getTag();
}

    void buildNameToFamilyMap(SkTDArray<FontFamily*> families) {
        for (int i = 0; i < families.count(); i++) {
            FontFamily& family = *families[i];

            SkTDArray<NameToFamily>* nameToFamily = &fNameToFamilyMap;
            if (family.fIsFallbackFont) {
                nameToFamily = &fFallbackNameToFamilyMap;

                if (0 == family.fNames.count()) {
                    SkString& fallbackName = family.fNames.push_back();
                    fallbackName.printf("%.2x##fallback", i);
                }
            }

            SkFontStyleSet_Android* newSet =
                SkNEW_ARGS(SkFontStyleSet_Android, (family, fScanner));
            if (0 == newSet->count()) {
                SkDELETE(newSet);
                continue;
            }
            fFontStyleSets.push_back().reset(newSet);

            for (int j = 0; j < family.fNames.count(); j++) {
                NameToFamily* nextEntry = nameToFamily->append();
                SkNEW_PLACEMENT_ARGS(&nextEntry->name, SkString, (family.fNames[j]));
                nextEntry->styleSet = newSet;
            }
        }
    }

    void buildNameToFamilyMap(SkTDArray<FontFamily*> families, const bool isolated) {
        for (int i = 0; i < families.count(); i++) {
            FontFamily& family = *families[i];

            SkTDArray<NameToFamily>* nameToFamily = &fNameToFamilyMap;
            if (family.fIsFallbackFont) {
                nameToFamily = &fFallbackNameToFamilyMap;

                if (0 == family.fNames.count()) {
                    SkString& fallbackName = family.fNames.push_back();
                    fallbackName.printf("%.2x##fallback", i);
                }
            }

            SkFontStyleSet_Android* newSet = new SkFontStyleSet_Android(family, fScanner, isolated);
            if (0 == newSet->count()) {
                delete newSet;
                continue;
            }
            fFontStyleSets.push_back().reset(newSet);

            for (int j = 0; j < family.fNames.count(); j++) {
                NameToFamily* nextEntry = nameToFamily->append();
                new (&nextEntry->name) SkString(family.fNames[j]);
                nextEntry->styleSet = newSet;
            }
        }
    }

static void start(ImplicitString config, ImplicitString src,
                  ImplicitString srcOptions, ImplicitString name) {
    SkString id = SkStringPrintf("%s %s %s %s", config.c_str(), src.c_str(),
                                                srcOptions.c_str(), name.c_str());
    SkAutoMutexAcquire lock(gRunningMutex);
    gRunning.push_back(id);
}

static void push_sink(const char* tag, Sink* s) {
    SkAutoTDelete<Sink> sink(s);
    if (!FLAGS_config.contains(tag)) {
        return;
    }
    // Try a simple Src as a canary.  If it fails, skip this sink.
    struct : public Src {
        Error draw(SkCanvas* c) const override {
            c->drawRect(SkRect::MakeWH(1,1), SkPaint());
            return "";
        }
        SkISize size() const override { return SkISize::Make(16, 16); }
        Name name() const override { return "justOneRect"; }
    } justOneRect;

    SkBitmap bitmap;
    SkDynamicMemoryWStream stream;
    SkString log;
    Error err = sink->draw(justOneRect, &bitmap, &stream, &log);
    if (err.isFatal()) {
        SkDebugf("Could not run %s: %s\n", tag, err.c_str());
        exit(1);
    }

    TaggedSink& ts = gSinks.push_back();
    ts.reset(sink.detach());
    ts.tag = tag;
}

void CubicToQuads(const SkDCubic& cubic, double precision, SkTArray<SkDQuad, true>& quads) {
    SkTArray<double, true> ts;
    toQuadraticTs(&cubic, precision, &ts);
    if (ts.count() <= 0) {
        SkDQuad quad = cubic.toQuad();
        quads.push_back(quad);
        return;
    }
    double tStart = 0;
    for (int i1 = 0; i1 <= ts.count(); ++i1) {
        const double tEnd = i1 < ts.count() ? ts[i1] : 1;
        SkDCubic part = cubic.subDivide(tStart, tEnd);
        SkDQuad quad = part.toQuad();
        quads.push_back(quad);
        tStart = tEnd;
    }
}

static void TestTSet_basic(skiatest::Reporter* reporter) {
    SkTArray<int, MEM_MOVE> a;

    // Starts empty.
    REPORTER_ASSERT(reporter, a.empty());
    REPORTER_ASSERT(reporter, a.count() == 0);

    // { }, add a default constructed element
    a.push_back() = 0;
    REPORTER_ASSERT(reporter, !a.empty());
    REPORTER_ASSERT(reporter, a.count() == 1);

    // { 0 }, removeShuffle the only element.
    a.removeShuffle(0);
    REPORTER_ASSERT(reporter, a.empty());
    REPORTER_ASSERT(reporter, a.count() == 0);

    // { }, add a default, add a 1, remove first
    a.push_back() = 0;
    REPORTER_ASSERT(reporter, a.push_back() = 1);
    a.removeShuffle(0);
    REPORTER_ASSERT(reporter, !a.empty());
    REPORTER_ASSERT(reporter, a.count() == 1);
    REPORTER_ASSERT(reporter, a[0] == 1);

    // { 1 }, replace with new array
    int b[5] = { 0, 1, 2, 3, 4 };
    a.reset(b, SK_ARRAY_COUNT(b));
    REPORTER_ASSERT(reporter, a.count() == SK_ARRAY_COUNT(b));
    REPORTER_ASSERT(reporter, a[2] == 2);
    REPORTER_ASSERT(reporter, a[4] == 4);

    // { 0, 1, 2, 3, 4 }, removeShuffle the last
    a.removeShuffle(4);
    REPORTER_ASSERT(reporter, a.count() == SK_ARRAY_COUNT(b) - 1);
    REPORTER_ASSERT(reporter, a[3] == 3);

    // { 0, 1, 2, 3 }, remove a middle, note shuffle
    a.removeShuffle(1);
    REPORTER_ASSERT(reporter, a.count() == SK_ARRAY_COUNT(b) - 2);
    REPORTER_ASSERT(reporter, a[0] == 0);
    REPORTER_ASSERT(reporter, a[1] == 3);
    REPORTER_ASSERT(reporter, a[2] == 2);

    // {0, 3, 2 }
}