17de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett/* 27de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * Copyright (C) 2016 The Android Open Source Project 37de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * 47de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * Licensed under the Apache License, Version 2.0 (the "License"); 57de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * you may not use this file except in compliance with the License. 67de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * You may obtain a copy of the License at 77de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * 87de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * http://www.apache.org/licenses/LICENSE-2.0 97de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * 107de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * Unless required by applicable law or agreed to in writing, software 117de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * distributed under the License is distributed on an "AS IS" BASIS, 127de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 137de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * See the License for the specific language governing permissions and 147de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett * limitations under the License. 157de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett */ 167de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett 17021693b967a2c5556dddd183eb0247df4079e1adStan Iliev#pragma once 18021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 197de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarettnamespace android { 207de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarettnamespace NinePatchUtils { 217de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett 227de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarettstatic inline void SetLatticeDivs(SkCanvas::Lattice* lattice, const Res_png_9patch& chunk, 237de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett int width, int height) { 247de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett lattice->fXCount = chunk.numXDivs; 257de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett lattice->fYCount = chunk.numYDivs; 267de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett lattice->fXDivs = chunk.getXDivs(); 277de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett lattice->fYDivs = chunk.getYDivs(); 287de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett 297de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett // We'll often see ninepatches where the last div is equal to the width or height. 307de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett // This doesn't provide any additional information and is not supported by Skia. 317de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett if (lattice->fXCount > 0 && width == lattice->fXDivs[lattice->fXCount - 1]) { 327de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett lattice->fXCount--; 337de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett } 347de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett if (lattice->fYCount > 0 && height == lattice->fYDivs[lattice->fYCount - 1]) { 357de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett lattice->fYCount--; 367de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett } 377de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett} 387de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett 39021693b967a2c5556dddd183eb0247df4079e1adStan Ilievstatic inline int NumDistinctRects(const SkCanvas::Lattice& lattice) { 40021693b967a2c5556dddd183eb0247df4079e1adStan Iliev int xRects; 41021693b967a2c5556dddd183eb0247df4079e1adStan Iliev if (lattice.fXCount > 0) { 42021693b967a2c5556dddd183eb0247df4079e1adStan Iliev xRects = (0 == lattice.fXDivs[0]) ? lattice.fXCount : lattice.fXCount + 1; 43021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } else { 44021693b967a2c5556dddd183eb0247df4079e1adStan Iliev xRects = 1; 45021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 46021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 47021693b967a2c5556dddd183eb0247df4079e1adStan Iliev int yRects; 48021693b967a2c5556dddd183eb0247df4079e1adStan Iliev if (lattice.fYCount > 0) { 49021693b967a2c5556dddd183eb0247df4079e1adStan Iliev yRects = (0 == lattice.fYDivs[0]) ? lattice.fYCount : lattice.fYCount + 1; 50021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } else { 51021693b967a2c5556dddd183eb0247df4079e1adStan Iliev yRects = 1; 52021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 53021693b967a2c5556dddd183eb0247df4079e1adStan Iliev return xRects * yRects; 54021693b967a2c5556dddd183eb0247df4079e1adStan Iliev} 55021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 56021693b967a2c5556dddd183eb0247df4079e1adStan Ilievstatic inline void SetLatticeFlags(SkCanvas::Lattice* lattice, SkCanvas::Lattice::Flags* flags, 57021693b967a2c5556dddd183eb0247df4079e1adStan Iliev int numFlags, const Res_png_9patch& chunk) { 58021693b967a2c5556dddd183eb0247df4079e1adStan Iliev lattice->fFlags = flags; 59021693b967a2c5556dddd183eb0247df4079e1adStan Iliev sk_bzero(flags, numFlags * sizeof(SkCanvas::Lattice::Flags)); 60021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 61021693b967a2c5556dddd183eb0247df4079e1adStan Iliev bool needPadRow = lattice->fYCount > 0 && 0 == lattice->fYDivs[0]; 62021693b967a2c5556dddd183eb0247df4079e1adStan Iliev bool needPadCol = lattice->fXCount > 0 && 0 == lattice->fXDivs[0]; 63021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 64021693b967a2c5556dddd183eb0247df4079e1adStan Iliev int yCount = lattice->fYCount; 65021693b967a2c5556dddd183eb0247df4079e1adStan Iliev if (needPadRow) { 66021693b967a2c5556dddd183eb0247df4079e1adStan Iliev // Skip flags for the degenerate first row of rects. 67021693b967a2c5556dddd183eb0247df4079e1adStan Iliev flags += lattice->fXCount + 1; 68021693b967a2c5556dddd183eb0247df4079e1adStan Iliev yCount--; 69021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 70021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 71021693b967a2c5556dddd183eb0247df4079e1adStan Iliev int i = 0; 72021693b967a2c5556dddd183eb0247df4079e1adStan Iliev bool setFlags = false; 73021693b967a2c5556dddd183eb0247df4079e1adStan Iliev for (int y = 0; y < yCount + 1; y++) { 74021693b967a2c5556dddd183eb0247df4079e1adStan Iliev for (int x = 0; x < lattice->fXCount + 1; x++) { 75021693b967a2c5556dddd183eb0247df4079e1adStan Iliev if (0 == x && needPadCol) { 76021693b967a2c5556dddd183eb0247df4079e1adStan Iliev // First rect of each column is degenerate, skip the flag. 77021693b967a2c5556dddd183eb0247df4079e1adStan Iliev flags++; 78021693b967a2c5556dddd183eb0247df4079e1adStan Iliev continue; 79021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 80021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 81021693b967a2c5556dddd183eb0247df4079e1adStan Iliev if (0 == chunk.getColors()[i++]) { 82021693b967a2c5556dddd183eb0247df4079e1adStan Iliev *flags = SkCanvas::Lattice::kTransparent_Flags; 83021693b967a2c5556dddd183eb0247df4079e1adStan Iliev setFlags = true; 84021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 85021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 86021693b967a2c5556dddd183eb0247df4079e1adStan Iliev flags++; 87021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 88021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 89021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 90021693b967a2c5556dddd183eb0247df4079e1adStan Iliev if (!setFlags) { 91021693b967a2c5556dddd183eb0247df4079e1adStan Iliev lattice->fFlags = nullptr; 92021693b967a2c5556dddd183eb0247df4079e1adStan Iliev } 93021693b967a2c5556dddd183eb0247df4079e1adStan Iliev} 94021693b967a2c5556dddd183eb0247df4079e1adStan Iliev 957de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett}; // namespace NinePatchUtils 967de73858975fc4dbccfa1c188f6d1a12d39ce2c5Matt Sarett}; // namespace android 97