1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.text; 18 19 import android.graphics.Canvas; 20 import android.graphics.Paint; 21 22 /** 23 * Please implement this interface if your CharSequence can do quick 24 * draw/measure/widths calculations from an internal array. 25 * {@hide} 26 */ 27 public interface GraphicsOperations 28 extends CharSequence 29 { 30 /** 31 * Just like {@link Canvas#drawText}. 32 */ 33 void drawText(Canvas c, int start, int end, 34 float x, float y, Paint p); 35 36 /** 37 * Just like {@link Canvas#drawTextRun}. 38 * {@hide} 39 */ 40 void drawTextRun(Canvas c, int start, int end, int contextStart, int contextEnd, 41 float x, float y, int flags, Paint p); 42 43 /** 44 * Just like {@link Paint#measureText}. 45 */ 46 float measureText(int start, int end, Paint p); 47 48 /** 49 * Just like {@link Paint#getTextWidths}. 50 */ 51 public int getTextWidths(int start, int end, float[] widths, Paint p); 52 53 /** 54 * Just like {@link Paint#getTextRunAdvances}. 55 * @hide 56 */ 57 float getTextRunAdvances(int start, int end, int contextStart, int contextEnd, 58 int flags, float[] advances, int advancesIndex, Paint paint); 59 60 /** 61 * Just like {@link Paint#getTextRunCursor}. 62 * @hide 63 */ 64 int getTextRunCursor(int contextStart, int contextEnd, int flags, int offset, 65 int cursorOpt, Paint p); 66 } 67
