C++ Paint::paint方法代码示例

void Canvas::drawAtlas(CanvasImage* atlas,
    const Vector<RSTransform>& transforms, const Vector<Rect>& rects,
    const Vector<SkColor>& colors, TransferMode mode,
    const Rect& cullRect, const Paint& paint)
{
  if (!m_canvas)
    return;

  RefPtr<SkImage> skImage = atlas->image();

  Vector<SkRSXform> skXForms;
  skXForms.reserveInitialCapacity(transforms.size());
  for (const RSTransform& transform : transforms)
    skXForms.append(transform.sk_xform);

  Vector<SkRect> skRects;
  skRects.reserveInitialCapacity(rects.size());
  for (const Rect& rect : rects)
    skRects.append(rect.sk_rect);

  m_canvas->drawAtlas(
      skImage.get(),
      skXForms.data(),
      skRects.data(),
      colors.isEmpty() ? nullptr : colors.data(),
      skXForms.size(),
      mode,
      cullRect.is_null ? nullptr : &cullRect.sk_rect,
      paint.paint()
  );
}

void Canvas::saveLayer(const Rect& bounds, const Paint& paint)
{
    if (!m_canvas)
        return;
    m_canvas->saveLayer(!bounds.is_null ? &bounds.sk_rect : nullptr,
                        paint.paint());
}

void Canvas::drawImageNine(const CanvasImage* image, Rect& center, Rect& dst, const Paint& paint) {
    if (!m_canvas)
        return;
    ASSERT(image);
    SkIRect icenter;
    center.sk_rect.round(&icenter);
    m_canvas->drawImageNine(image->image(), icenter, dst.sk_rect, paint.paint());
}

void Canvas::drawVertices(SkCanvas::VertexMode vertexMode,
        const Vector<Point>& vertices,
        const Vector<Point>& textureCoordinates,
        const Vector<SkColor>& colors,
        SkXfermode::Mode transferMode,
        const Vector<int>& indices,
        const Paint& paint,
        ExceptionState& es)
{
    if (!m_canvas)
        return;
    size_t vertexCount = vertices.size();

    if (textureCoordinates.size() && textureCoordinates.size() != vertexCount)
        return es.ThrowRangeError("vertices and textureCoordinates lengths must match");
    if (colors.size() && colors.size() != vertexCount)
        return es.ThrowRangeError("vertices and colors lengths must match");

    Vector<SkPoint> skVertices;
    for (size_t x = 0; x < vertices.size(); x++) {
        const Point& point = vertices[x];
        if (point.is_null)
            return es.ThrowRangeError("vertices contained a null");
        skVertices.append(point.sk_point);
    }

    Vector<SkPoint> skTextureCoordinates;
    for (size_t x = 0; x < textureCoordinates.size(); x++) {
        const Point& point = textureCoordinates[x];
        if (point.is_null)
            return es.ThrowRangeError("textureCoordinates contained a null");
        skTextureCoordinates.append(point.sk_point);
    }

    Vector<uint16_t> skIndices;
    for (size_t x = 0; x < indices.size(); x++) {
        uint16_t i = indices[x];
        skIndices.append(i);
    }

    RefPtr<SkXfermode> transferModePtr = adoptRef(SkXfermode::Create(transferMode));

    m_canvas->drawVertices(
        vertexMode,
        skVertices.size(),
        skVertices.data(),
        skTextureCoordinates.isEmpty() ? nullptr : skTextureCoordinates.data(),
        colors.isEmpty() ? nullptr : colors.data(),
        transferModePtr.get(),
        skIndices.isEmpty() ? nullptr : skIndices.data(),
        skIndices.size(),
        *paint.paint()
    );
}

void Canvas::saveLayer(double left,
                       double top,
                       double right,
                       double bottom,
                       const Paint& paint)
{
    if (!m_canvas)
        return;
    SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom);
    m_canvas->saveLayer(&bounds, paint.paint());
}

void Canvas::drawVertices(SkCanvas::VertexMode vertexMode,
        const std::vector<Point>& vertices,
        const std::vector<Point>& textureCoordinates,
        const std::vector<CanvasColor>& colors,
        TransferMode transferMode,
        const std::vector<int>& indices,
        const Paint& paint)
{
  if (!m_canvas)
    return;

  std::vector<SkPoint> skVertices;
  skVertices.reserve(vertices.size());
  for (const Point& point : vertices)
    skVertices.push_back(point.sk_point);

  std::vector<SkPoint> skTextureCoordinates;
  skVertices.reserve(textureCoordinates.size());
  for (const Point& point : textureCoordinates)
    skTextureCoordinates.push_back(point.sk_point);

  std::vector<SkColor> skColors;
  skColors.reserve(colors.size());
  for (const CanvasColor& color : colors)
    skColors.push_back(color);

  std::vector<uint16_t> skIndices;
  skIndices.reserve(indices.size());
  for (uint16_t i : indices)
    skIndices.push_back(i);

  RefPtr<SkXfermode> transferModePtr = adoptRef(SkXfermode::Create(transferMode));

  m_canvas->drawVertices(
    vertexMode,
    skVertices.size(),
    skVertices.data(),
    skTextureCoordinates.empty() ? nullptr : skTextureCoordinates.data(),
    skColors.empty() ? nullptr : skColors.data(),
    transferModePtr.get(),
    skIndices.empty() ? nullptr : skIndices.data(),
    skIndices.size(),
    *paint.paint()
  );
}

void Canvas::drawImageRect(const CanvasImage* image,
                           double srcLeft,
                           double srcTop,
                           double srcRight,
                           double srcBottom,
                           double dstLeft,
                           double dstTop,
                           double dstRight,
                           double dstBottom,
                           const Paint& paint) {
    if (!m_canvas)
        return;
    ASSERT(image);
    m_canvas->drawImageRect(image->image(),
                            SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom),
                            SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom),
                            paint.paint(),
                            SkCanvas::kFast_SrcRectConstraint);
}

void Canvas::drawImageNine(const CanvasImage* image,
                           double centerLeft,
                           double centerTop,
                           double centerRight,
                           double centerBottom,
                           double dstLeft,
                           double dstTop,
                           double dstRight,
                           double dstBottom,
                           const Paint& paint) {
    if (!m_canvas)
        return;
    ASSERT(image);
    SkRect center = SkRect::MakeLTRB(centerLeft, centerTop, centerRight, centerBottom);
    SkIRect icenter;
    center.round(&icenter);
    m_canvas->drawImageNine(image->image(),
                            icenter,
                            SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom),
                            paint.paint());
}

void Canvas::drawAtlas(CanvasImage* atlas,
    const Vector<RSTransform>& transforms, const Vector<Rect>& rects,
    const Vector<SkColor>& colors, SkXfermode::Mode mode,
    const Rect& cullRect, const Paint& paint, ExceptionState& es)
{
    if (!m_canvas)
        return;
    RefPtr<SkImage> skImage = atlas->image();
    if (transforms.size() != rects.size())
        return es.ThrowRangeError("transforms and rects lengths must match");
    if (colors.size() && colors.size() != rects.size())
        return es.ThrowRangeError("if supplied, colors length must match that of transforms and rects");

    Vector<SkRSXform> skXForms;
    for (size_t x = 0; x < transforms.size(); x++) {
        const RSTransform& transform = transforms[x];
        if (transform.is_null)
            return es.ThrowRangeError("transforms contained a null");
        skXForms.append(transform.sk_xform);
    }

    Vector<SkRect> skRects;
    for (size_t x = 0; x < rects.size(); x++) {
        const Rect& rect = rects[x];
        if (rect.is_null)
            return es.ThrowRangeError("rects contained a null");
        skRects.append(rect.sk_rect);
    }

    m_canvas->drawAtlas(
        skImage.get(),
        skXForms.data(),
        skRects.data(),
        colors.isEmpty() ? nullptr : colors.data(),
        skXForms.size(),
        mode,
        cullRect.is_null ? nullptr : &cullRect.sk_rect,
        paint.paint()
    );
}

void Canvas::drawVertices(SkCanvas::VertexMode vertexMode,
        const Vector<Point>& vertices,
        const Vector<Point>& textureCoordinates,
        const Vector<SkColor>& colors,
        TransferMode transferMode,
        const Vector<int>& indices,
        const Paint& paint)
{
  if (!m_canvas)
    return;

  Vector<SkPoint> skVertices;
  skVertices.reserveInitialCapacity(vertices.size());
  for (const Point& point : vertices)
    skVertices.append(point.sk_point);

  Vector<SkPoint> skTextureCoordinates;
  skVertices.reserveInitialCapacity(textureCoordinates.size());
  for (const Point& point : textureCoordinates)
    skTextureCoordinates.append(point.sk_point);

  Vector<uint16_t> skIndices;
  skIndices.reserveInitialCapacity(indices.size());
  for (uint16_t i : indices)
    skIndices.append(i);

  RefPtr<SkXfermode> transferModePtr = adoptRef(SkXfermode::Create(transferMode));

  m_canvas->drawVertices(
    vertexMode,
    skVertices.size(),
    skVertices.data(),
    skTextureCoordinates.isEmpty() ? nullptr : skTextureCoordinates.data(),
    colors.isEmpty() ? nullptr : colors.data(),
    transferModePtr.get(),
    skIndices.isEmpty() ? nullptr : skIndices.data(),
    skIndices.size(),
    *paint.paint()
  );
}

void Canvas::drawAtlas(CanvasImage* atlas,
    const std::vector<RSTransform>& transforms, const std::vector<Rect>& rects,
    const std::vector<CanvasColor>& colors, TransferMode mode,
    const Rect& cullRect, const Paint& paint)
{
  if (!m_canvas)
    return;

  RefPtr<SkImage> skImage = atlas->image();

  std::vector<SkRSXform> skXForms;
  skXForms.reserve(transforms.size());
  for (const RSTransform& transform : transforms)
    skXForms.push_back(transform.sk_xform);

  std::vector<SkRect> skRects;
  skRects.reserve(rects.size());
  for (const Rect& rect : rects)
    skRects.push_back(rect.sk_rect);

  std::vector<SkColor> skColors;
  skColors.reserve(colors.size());
  for (const CanvasColor& color : colors)
    skColors.push_back(color);

  m_canvas->drawAtlas(
      skImage.get(),
      skXForms.data(),
      skRects.data(),
      skColors.empty() ? nullptr : skColors.data(),
      skXForms.size(),
      mode,
      cullRect.is_null ? nullptr : &cullRect.sk_rect,
      paint.paint()
  );
}

void Canvas::drawImageRect(const CanvasImage* image, Rect& src, Rect& dst, const Paint& paint) {
    if (!m_canvas)
        return;
    ASSERT(image);
    m_canvas->drawImageRect(image->image(), src.sk_rect, dst.sk_rect, paint.paint(), SkCanvas::kFast_SrcRectConstraint);
}

void Canvas::drawImage(const CanvasImage* image, const Point& p, const Paint& paint) {
    if (!m_canvas)
        return;
    ASSERT(image);
    m_canvas->drawImage(image->image(), p.sk_point.x(), p.sk_point.y(), paint.paint());
}

void Canvas::saveLayerWithoutBounds(const Paint& paint) {
    if (!m_canvas)
        return;
    m_canvas->saveLayer(nullptr, paint.paint());
}

void Canvas::drawImage(const CanvasImage* image, double x, double y, const Paint& paint) {
    if (!m_canvas)
        return;
    ASSERT(image);
    m_canvas->drawImage(image->image(), x, y, paint.paint());
}