88 lines
3.0 KiB
Java
88 lines
3.0 KiB
Java
/*
|
|
* Copyright (C) 2010 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 com.hippo.glview.glrenderer;
|
|
|
|
import android.graphics.Bitmap;
|
|
import android.graphics.Canvas;
|
|
import android.graphics.Color;
|
|
import android.graphics.Paint.FontMetricsInt;
|
|
import android.graphics.Typeface;
|
|
import android.text.TextPaint;
|
|
import android.text.TextUtils;
|
|
|
|
// StringTexture is a texture shows the content of a specified String.
|
|
//
|
|
// To create a StringTexture, use the newInstance() method and specify
|
|
// the String, the font size, and the color.
|
|
public class StringTexture extends CanvasTexture {
|
|
private final String mText;
|
|
private final TextPaint mPaint;
|
|
private final FontMetricsInt mMetrics;
|
|
|
|
private StringTexture(String text, TextPaint paint,
|
|
FontMetricsInt metrics, int width, int height) {
|
|
super(width, height);
|
|
mText = text;
|
|
mPaint = paint;
|
|
mMetrics = metrics;
|
|
}
|
|
|
|
public static TextPaint getDefaultPaint(float textSize, int color) {
|
|
TextPaint paint = new TextPaint();
|
|
paint.setTextSize(textSize);
|
|
paint.setAntiAlias(true);
|
|
paint.setColor(color);
|
|
paint.setShadowLayer(2f, 0f, 0f, Color.BLACK);
|
|
return paint;
|
|
}
|
|
|
|
public static StringTexture newInstance(
|
|
String text, float textSize, int color) {
|
|
return newInstance(text, getDefaultPaint(textSize, color));
|
|
}
|
|
|
|
public static StringTexture newInstance(
|
|
String text, float textSize, int color,
|
|
float lengthLimit, boolean isBold) {
|
|
TextPaint paint = getDefaultPaint(textSize, color);
|
|
if (isBold) {
|
|
paint.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));
|
|
}
|
|
if (lengthLimit > 0) {
|
|
text = TextUtils.ellipsize(
|
|
text, paint, lengthLimit, TextUtils.TruncateAt.END).toString();
|
|
}
|
|
return newInstance(text, paint);
|
|
}
|
|
|
|
private static StringTexture newInstance(String text, TextPaint paint) {
|
|
FontMetricsInt metrics = paint.getFontMetricsInt();
|
|
int width = (int) Math.ceil(paint.measureText(text));
|
|
int height = metrics.bottom - metrics.top;
|
|
// The texture size needs to be at least 1x1.
|
|
if (width <= 0) width = 1;
|
|
if (height <= 0) height = 1;
|
|
return new StringTexture(text, paint, metrics, width, height);
|
|
}
|
|
|
|
@Override
|
|
protected void onDraw(Canvas canvas, Bitmap backing) {
|
|
canvas.translate(0, -mMetrics.ascent);
|
|
canvas.drawText(mText, 0, 0, mPaint);
|
|
}
|
|
}
|