libs/minikin/BoundsCache.cpp

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "minikin/BoundsCache.h"

namespace minikin {

void ValueExtractor::operator()(const LayoutPiece& layoutPiece, const MinikinPaint& paint) {
    value.reset(new BoundsValue);
    value->rect = BoundsCache::getBounds(layoutPiece, paint);
    value->advance = layoutPiece.advance();
}

// static
MinikinRect BoundsCache::getBounds(const LayoutPiece& layoutPiece, const MinikinPaint& paint) {
    MinikinRect pieceBounds;
    MinikinRect tmpRect;
    for (uint32_t i = 0; i < layoutPiece.glyphCount(); ++i) {
        const FakedFont& font = layoutPiece.fontAt(i);
        const Point& point = layoutPiece.pointAt(i);

        MinikinFont* minikinFont = font.font->typeface().get();
        minikinFont->GetBounds(&tmpRect, layoutPiece.glyphIdAt(i), paint, font.fakery);
        tmpRect.offset(point.x, point.y);
        pieceBounds.join(tmpRect);
    }
    return pieceBounds;
}

}  // namespace minikin