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.drawable.Drawable; 20 import android.graphics.Paint; 21 import android.graphics.Canvas; 22 import android.text.Spanned; 23 import android.text.Layout; 24 25 public class DrawableMarginSpan 26 implements LeadingMarginSpan, LineHeightSpan 27 { 28 public DrawableMarginSpan(Drawable b) { 29 mDrawable = b; 30 } 31 32 public DrawableMarginSpan(Drawable b, int pad) { 33 mDrawable = b; 34 mPad = pad; 35 } 36 37 public int getLeadingMargin(boolean first) { 38 return mDrawable.getIntrinsicWidth() + 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 ix = (int)x; 47 int itop = (int)layout.getLineTop(layout.getLineForOffset(st)); 48 49 int dw = mDrawable.getIntrinsicWidth(); 50 int dh = mDrawable.getIntrinsicHeight(); 51 52 // XXX What to do about Paint? 53 mDrawable.setBounds(ix, itop, ix+dw, itop+dh); 54 mDrawable.draw(c); 55 } 56 57 public void chooseHeight(CharSequence text, int start, int end, 58 int istartv, int v, 59 Paint.FontMetricsInt fm) { 60 if (end == ((Spanned) text).getSpanEnd(this)) { 61 int ht = mDrawable.getIntrinsicHeight(); 62 63 int need = ht - (v + fm.descent - fm.ascent - istartv); 64 if (need > 0) 65 fm.descent += need; 66 67 need = ht - (v + fm.bottom - fm.top - istartv); 68 if (need > 0) 69 fm.bottom += need; 70 } 71 } 72 73 private Drawable mDrawable; 74 private int mPad; 75 } 76
