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