| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "flutter/lib/ui/painting/vertices.h" |
| |
| #include <algorithm> |
| |
| #include "flutter/lib/ui/ui_dart_state.h" |
| #include "third_party/tonic/dart_binding_macros.h" |
| #include "third_party/tonic/dart_library_natives.h" |
| |
| namespace flutter { |
| |
| IMPLEMENT_WRAPPERTYPEINFO(ui, Vertices); |
| |
| Vertices::Vertices() {} |
| |
| Vertices::~Vertices() {} |
| |
| bool Vertices::init(Dart_Handle vertices_handle, |
| DlVertexMode vertex_mode, |
| Dart_Handle positions_handle, |
| Dart_Handle texture_coordinates_handle, |
| Dart_Handle colors_handle, |
| Dart_Handle indices_handle) { |
| UIDartState::ThrowIfUIOperationsProhibited(); |
| |
| tonic::Float32List positions(positions_handle); |
| tonic::Float32List texture_coordinates(texture_coordinates_handle); |
| tonic::Int32List colors(colors_handle); |
| tonic::Uint16List indices(indices_handle); |
| |
| if (!positions.data()) { |
| return false; |
| } |
| |
| DlVertices::Builder::Flags flags; |
| if (texture_coordinates.data()) { |
| flags = flags | DlVertices::Builder::kHasTextureCoordinates; |
| } |
| if (colors.data()) { |
| flags = flags | DlVertices::Builder::kHasColors; |
| } |
| DlVertices::Builder builder(vertex_mode, positions.num_elements() / 2, flags, |
| indices.num_elements()); |
| |
| if (!builder.is_valid()) { |
| return false; |
| } |
| |
| // positions are required for SkVertices::Builder |
| builder.store_vertices(positions.data()); |
| |
| if (texture_coordinates.data()) { |
| // SkVertices::Builder assumes equal numbers of elements |
| FML_DCHECK(positions.num_elements() == texture_coordinates.num_elements()); |
| builder.store_texture_coordinates(texture_coordinates.data()); |
| } |
| |
| if (colors.data()) { |
| // SkVertices::Builder assumes equal numbers of elements |
| FML_DCHECK(positions.num_elements() / 2 == colors.num_elements()); |
| builder.store_colors(reinterpret_cast<const SkColor*>(colors.data())); |
| } |
| |
| if (indices.data() && indices.num_elements() > 0) { |
| builder.store_indices(indices.data()); |
| } |
| |
| positions.Release(); |
| texture_coordinates.Release(); |
| colors.Release(); |
| indices.Release(); |
| |
| auto vertices = fml::MakeRefCounted<Vertices>(); |
| vertices->vertices_ = builder.build(); |
| vertices->AssociateWithDartWrapper(vertices_handle); |
| |
| return true; |
| } |
| |
| size_t Vertices::GetAllocationSize() const { |
| return vertices_->size(); |
| } |
| |
| } // namespace flutter |