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 */ drawText(Canvas c, int start, int end, float x, float y, Paint p)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 */ drawTextRun(Canvas c, int start, int end, int contextStart, int contextEnd, float x, float y, boolean isRtl, Paint p)40 void drawTextRun(Canvas c, int start, int end, int contextStart, int contextEnd, 41 float x, float y, boolean isRtl, Paint p); 42 43 /** 44 * Just like {@link Paint#measureText}. 45 */ measureText(int start, int end, Paint p)46 float measureText(int start, int end, Paint p); 47 48 /** 49 * Just like {@link Paint#getTextWidths}. 50 */ getTextWidths(int start, int end, float[] widths, Paint p)51 public int getTextWidths(int start, int end, float[] widths, Paint p); 52 53 /** 54 * Just like {@link Paint#getTextRunAdvances}. 55 * @hide 56 */ getTextRunAdvances(int start, int end, int contextStart, int contextEnd, boolean isRtl, float[] advances, int advancesIndex, Paint paint)57 float getTextRunAdvances(int start, int end, int contextStart, int contextEnd, 58 boolean isRtl, float[] advances, int advancesIndex, Paint paint); 59 60 /** 61 * Just like {@link Paint#getTextRunCursor}. 62 * @hide 63 */ getTextRunCursor(int contextStart, int contextEnd, int dir, int offset, int cursorOpt, Paint p)64 int getTextRunCursor(int contextStart, int contextEnd, int dir, int offset, 65 int cursorOpt, Paint p); 66 } 67