MinikinFont.h revision 5986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5
1bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien/* 2bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * Copyright (C) 2013 The Android Open Source Project 3bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * 4bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * Licensed under the Apache License, Version 2.0 (the "License"); 5bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * you may not use this file except in compliance with the License. 6bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * You may obtain a copy of the License at 7bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * 8bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * http://www.apache.org/licenses/LICENSE-2.0 9bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * 10bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * Unless required by applicable law or agreed to in writing, software 11bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * distributed under the License is distributed on an "AS IS" BASIS, 12bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * See the License for the specific language governing permissions and 14bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien * limitations under the License. 15bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien */ 16bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 17bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#ifndef MINIKIN_FONT_H 18bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#define MINIKIN_FONT_H 19bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 205986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod#include <string> 215986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod 22b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien#include <minikin/MinikinRefCounted.h> 239a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien#include <minikin/FontFamily.h> 24b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien 25bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien// An abstraction for platform fonts, allowing Minikin to be used with 26bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien// multiple actual implementations of fonts. 27bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 28bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Leviennamespace android { 29bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 30bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienclass MinikinFont; 31bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 32bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien// Possibly move into own .h file? 335986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod// Note: if you add a field here, either add it to LayoutCacheKey or to skipCache() 34bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienstruct MinikinPaint { 3583d5a3c53d77c34fbeac7012ab3612933982d494Behdad Esfahbod MinikinPaint() : font(0), size(0), scaleX(0), skewX(0), letterSpacing(0), paintFlags(0), 365986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod fakery(), fontFeatureSettings() { } 375986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod 385986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod bool skipCache() const { 395986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod return !fontFeatureSettings.empty(); 405986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod } 415986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod 42bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont *font; 43bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien float size; 44448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float scaleX; 45448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float skewX; 468e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod float letterSpacing; 473164d1a77eecf3185347a44342131f4275de824fRaph Levien uint32_t paintFlags; 489a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien FontFakery fakery; 495986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod std::string fontFeatureSettings; 50bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien}; 51bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 52ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienstruct MinikinRect { 53ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float mLeft, mTop, mRight, mBottom; 54ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien bool isEmpty() const { 55ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return mLeft == mRight || mTop == mBottom; 56ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 57ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien void set(const MinikinRect& r) { 58ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mLeft = r.mLeft; 59ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mTop = r.mTop; 60ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mRight = r.mRight; 61ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBottom = r.mBottom; 62ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 63ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien void offset(float dx, float dy) { 64ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mLeft += dx; 65ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mTop += dy; 66ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mRight += dx; 67ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBottom += dy; 68ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 69ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien void setEmpty() { 70ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mLeft = mTop = mRight = mBottom = 0; 71ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 72ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien void join(const MinikinRect& r); 73ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien}; 74ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 75bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienclass MinikinFontFreeType; 76bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 77b80c1f19c58b927820a8a24bf2218e5645724608Raph Levienclass MinikinFont : public MinikinRefCounted { 78bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienpublic: 79bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien virtual bool GetGlyph(uint32_t codepoint, uint32_t *glyph) const = 0; 80bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 81bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien virtual float GetHorizontalAdvance(uint32_t glyph_id, 82bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien const MinikinPaint &paint) const = 0; 83bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 84ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien virtual void GetBounds(MinikinRect* bounds, uint32_t glyph_id, 85ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const MinikinPaint &paint) const = 0; 86ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 87bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien // If buf is NULL, just update size 88bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien virtual bool GetTable(uint32_t tag, uint8_t *buf, size_t *size) = 0; 89bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 90bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien virtual int32_t GetUniqueId() const = 0; 91bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 92bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien static uint32_t MakeTag(char c1, char c2, char c3, char c4) { 93bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return ((uint32_t)c1 << 24) | ((uint32_t)c2 << 16) | 94bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien ((uint32_t)c3 << 8) | (uint32_t)c4; 95bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien } 96bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien}; 97bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 98bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien} // namespace android 99bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 100bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#endif // MINIKIN_FONT_H 101