FontFamily.h revision 4d4e6bc8118d15542f1f2a9218f0f7a91a29474f
19cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien/* 29cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Copyright (C) 2013 The Android Open Source Project 39cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 49cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Licensed under the Apache License, Version 2.0 (the "License"); 59cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * you may not use this file except in compliance with the License. 69cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * You may obtain a copy of the License at 79cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 89cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * http://www.apache.org/licenses/LICENSE-2.0 99cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 109cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Unless required by applicable law or agreed to in writing, software 119cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * distributed under the License is distributed on an "AS IS" BASIS, 129cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * See the License for the specific language governing permissions and 149cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * limitations under the License. 159cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien */ 169cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 179cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#ifndef MINIKIN_FONT_FAMILY_H 189cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#define MINIKIN_FONT_FAMILY_H 199cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 209cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <vector> 219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 224d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/TypeHelpers.h> 234d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 24b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien#include <minikin/MinikinRefCounted.h> 25b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien 269cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Leviennamespace android { 279cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 289cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien// FontStyle represents all style information needed to select an actual font 299cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien// from a collection. The implementation is packed into a single 32-bit word 309cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien// so it can be efficiently copied, embedded in other objects, etc. 319cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienclass FontStyle { 329cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienpublic: 339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontStyle(int weight = 4, bool italic = false) { 349cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien bits = (weight & kWeightMask) | (italic ? kItalicMask : 0); 359cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 364d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int getWeight() const { return bits & kWeightMask; } 374d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool getItalic() const { return (bits & kItalicMask) != 0; } 384d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool operator==(const FontStyle other) const { return bits == other.bits; } 399cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // TODO: language, variant 404d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 414d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash_t hash() const { return bits; } 429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienprivate: 439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien static const int kWeightMask = 0xf; 449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien static const int kItalicMask = 16; 459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien uint32_t bits; 469cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien}; 479cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levieninline hash_t hash_type(const FontStyle &style) { 494d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return style.hash(); 504d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 52b80c1f19c58b927820a8a24bf2218e5645724608Raph Levienclass FontFamily : public MinikinRefCounted { 539cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienpublic: 54b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien ~FontFamily(); 55b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien 569cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // Add font to family, extracting style information from the font 57bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien bool addFont(MinikinFont* typeface); 589cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 59bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien void addFont(MinikinFont* typeface, FontStyle style); 60bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont* getClosestMatch(FontStyle style) const; 619cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 629cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // API's for enumerating the fonts in a family. These don't guarantee any particular order 639cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien size_t getNumFonts() const; 64bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont* getFont(size_t index) const; 659cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontStyle getStyle(size_t index) const; 669cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienprivate: 67c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien void addFontLocked(MinikinFont* typeface, FontStyle style); 68c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien 699cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien class Font { 709cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien public: 71bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien Font(MinikinFont* typeface, FontStyle style) : 729cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien typeface(typeface), style(style) { } 73bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont* typeface; 749cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontStyle style; 759cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien }; 769cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien std::vector<Font> mFonts; 779cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien}; 789cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 799cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} // namespace android 809cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 819cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#endif // MINIKIN_FONT_FAMILY_H 82