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/*
* 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.graphics.RectF;
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();
if (dir < 0)
x -= dw;
// 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;
}
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