1/* 2 * Copyright (C) 2006 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 17package android.text.style; 18 19import android.graphics.Paint; 20import android.graphics.Bitmap; 21import android.graphics.Canvas; 22import android.graphics.RectF; 23import android.text.Spanned; 24import android.text.Layout; 25 26public class IconMarginSpan 27implements LeadingMarginSpan, LineHeightSpan 28{ 29 public IconMarginSpan(Bitmap b) { 30 mBitmap = b; 31 } 32 33 public IconMarginSpan(Bitmap b, int pad) { 34 mBitmap = b; 35 mPad = pad; 36 } 37 38 public int getLeadingMargin(boolean first) { 39 return mBitmap.getWidth() + mPad; 40 } 41 42 public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, 43 int top, int baseline, int bottom, 44 CharSequence text, int start, int end, 45 boolean first, Layout layout) { 46 int st = ((Spanned) text).getSpanStart(this); 47 int itop = layout.getLineTop(layout.getLineForOffset(st)); 48 49 if (dir < 0) 50 x -= mBitmap.getWidth(); 51 52 c.drawBitmap(mBitmap, x, itop, p); 53 } 54 55 public void chooseHeight(CharSequence text, int start, int end, 56 int istartv, int v, 57 Paint.FontMetricsInt fm) { 58 if (end == ((Spanned) text).getSpanEnd(this)) { 59 int ht = mBitmap.getHeight(); 60 61 int need = ht - (v + fm.descent - fm.ascent - istartv); 62 if (need > 0) 63 fm.descent += need; 64 65 need = ht - (v + fm.bottom - fm.top - istartv); 66 if (need > 0) 67 fm.bottom += need; 68 } 69 } 70 71 private Bitmap mBitmap; 72 private int mPad; 73} 74