1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* 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;
}
|