blob: e7680d115bfdbad69f2b5116016634cf9521dbc2 [file] [log] [blame]
// 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