package com.test.imgtest; /** * @项目 SurfaceDemo 文件名 GLFont.java * @GLFont */ /** * @author leolaurel * @version 1.0.0 2012-7-5 */ import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Typeface; import android.graphics.Paint.FontMetrics; public class GLFont { /* * 默认采用白色字体，宋体文字加粗 */ public static Bitmap getImage(int width, int height ,String mString, int size) { return getImage(width, height, mString, size, Color.RED, Typeface.create("宋体",Typeface.BOLD)); } public static Bitmap getImage(int width, int height ,String mString,int size ,int color) { return getImage(width, height, mString, size, color, Typeface.create("宋体",Typeface.BOLD)); } public static Bitmap getImage(int width, int height ,String mString,int size ,int color, String familyName) { return getImage(width, height, mString, size, color, Typeface.create(familyName,Typeface.BOLD)); } public static Bitmap getImage(int width, int height ,String mString,int size, int color, Typeface font) { int x = width; int y = height; Bitmap bmp = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_8888); //图象大小要根据文字大小算下,以和文本长度对应 Canvas canvasTemp = new Canvas(bmp); canvasTemp.drawColor(Color.BLACK); Paint p = new Paint(); p.setColor(color); p.setTypeface(font); p.setAntiAlias(true);//去除锯齿 p.setFilterBitmap(true);//对位图进行滤波处理 p.setTextSize(scalaFonts(size)); float tX = (x - getFontlength(p, mString))/2; float tY = (y - getFontHeight(p))/2+getFontLeading(p); canvasTemp.drawText(mString,tX,tY,p); return bmp; } /** * 根据屏幕系数比例获取文字大小 * @return */ private static float scalaFonts(int size) { //暂未实现 return size; } /** * @return 返回指定笔和指定字符串的长度 */ public static float getFontlength(Paint paint, String str) { return paint.measureText(str); } /** * @return 返回指定笔的文字高度 */ public static float getFontHeight(Paint paint) { FontMetrics fm = paint.getFontMetrics(); return fm.descent - fm.ascent; } /** * @return 返回指定笔离文字顶部的基准距离 */ public static float getFontLeading(Paint paint) { FontMetrics fm = paint.getFontMetrics(); return fm.leading- fm.ascent; } }