| /* |
| * Copyright (C) 2014 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. |
| */ |
| |
| /** |
| * Utilities for making Minikin work, especially from existing objects like |
| * SkPaint and so on. |
| **/ |
| |
| // TODO: does this really need to be separate from MinikinSkia? |
| |
| #ifndef ANDROID_MINIKIN_UTILS_H |
| #define ANDROID_MINIKIN_UTILS_H |
| |
| namespace android { |
| |
| class Layout; |
| class TypefaceImpl; |
| |
| class MinikinUtils { |
| public: |
| static std::string setLayoutProperties(Layout* layout, const SkPaint* paint, int bidiFlags, |
| TypefaceImpl* typeface); |
| |
| static float xOffsetForTextAlign(SkPaint* paint, const Layout& layout); |
| |
| // f is a functor of type void f(SkTypeface *, size_t start, size_t end); |
| template <typename F> |
| static void forFontRun(const Layout& layout, F& f) { |
| SkTypeface* lastFace = NULL; |
| size_t start = 0; |
| size_t nGlyphs = layout.nGlyphs(); |
| for (size_t i = 0; i < nGlyphs; i++) { |
| MinikinFontSkia* mfs = static_cast<MinikinFontSkia*>(layout.getFont(i)); |
| SkTypeface* skFace = mfs->GetSkTypeface(); |
| if (i > 0 && skFace != lastFace) { |
| f(lastFace, start, i); |
| start = i; |
| } |
| lastFace = skFace; |
| } |
| if (nGlyphs > start) { |
| f(lastFace, start, nGlyphs); |
| } |
| } |
| }; |
| |
| } // namespace android |
| |
| #endif // ANDROID_MINIKIN_UTILS_H |