| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.text.style; |
| |
| import android.graphics.drawable.Drawable; |
| import android.graphics.Paint; |
| import android.graphics.Canvas; |
| import android.text.Spanned; |
| import android.text.Layout; |
| |
| public class DrawableMarginSpan |
| implements LeadingMarginSpan, LineHeightSpan |
| { |
| public DrawableMarginSpan(Drawable b) { |
| mDrawable = b; |
| } |
| |
| public DrawableMarginSpan(Drawable b, int pad) { |
| mDrawable = b; |
| mPad = pad; |
| } |
| |
| public int getLeadingMargin(boolean first) { |
| return mDrawable.getIntrinsicWidth() + mPad; |
| } |
| |
| public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, |
| int top, int baseline, int bottom, |
| CharSequence text, int start, int end, |
| boolean first, Layout layout) { |
| int st = ((Spanned) text).getSpanStart(this); |
| int ix = (int)x; |
| int itop = (int)layout.getLineTop(layout.getLineForOffset(st)); |
| |
| int dw = mDrawable.getIntrinsicWidth(); |
| int dh = mDrawable.getIntrinsicHeight(); |
| |
| // XXX What to do about Paint? |
| mDrawable.setBounds(ix, itop, ix+dw, itop+dh); |
| mDrawable.draw(c); |
| } |
| |
| public void chooseHeight(CharSequence text, int start, int end, |
| int istartv, int v, |
| Paint.FontMetricsInt fm) { |
| if (end == ((Spanned) text).getSpanEnd(this)) { |
| int ht = mDrawable.getIntrinsicHeight(); |
| |
| int need = ht - (v + fm.descent - fm.ascent - istartv); |
| if (need > 0) |
| fm.descent += need; |
| |
| need = ht - (v + fm.bottom - fm.top - istartv); |
| if (need > 0) |
| fm.bottom += need; |
| } |
| } |
| |
| private Drawable mDrawable; |
| private int mPad; |
| } |