package utils; import view.Axis; import view.AxisBorder; import view.Point; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.File; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /** * @author duh * @create 2018/7/17 15:03 * @email duh@elab-plus.com **/ public class AxisUtils { public static void drawAxis(AxisBorder border ,Axis xaxis, Axis yaxis, int width, int height, Graphics2D g){ //抗锯齿 字体更平滑 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); // drawBorder(border, width, height, g); drawXAxis(border, xaxis, width, height, g); drawYAxis(border, yaxis, width, height, g); //设置作图区域颜色为白色 // g.setColor(new Color(0xFFFFFF)); // g.fillRect(border.getLeft(), border.getTop(), width, height); } /** * 画x轴坐标 * @param axisBorder * @param xaxis * @param width * @param height * @param g */ private static void drawXAxis(AxisBorder axisBorder, Axis xaxis, int width ,int height, Graphics2D g){ //画x坐标 Point point1 = new Point(axisBorder.getLeft(), axisBorder.getTop() + height); Point point2 = new Point(axisBorder.getLeft() + width, axisBorder.getTop() + height); drawLine(point1, point2, new Color(xaxis.getLineColor()) , xaxis.getLineWidth(), g); //画刻度 int ticks = xaxis.getTicks(); int skips = width / ticks; int x = axisBorder.getLeft(); int y1 = axisBorder.getTop() + height ; int y2 = y1 + 10; String type = xaxis.getType(); //获取坐标轴类型 for(int i = 1 ; i <= ticks ; i++){ point1 = new Point(x + skips * i,y1); point2 = new Point(x + skips * i,y2); drawLine(point1, point2, new Color(xaxis.getLineColor()) , xaxis.getLineWidth(), g); } //画label if(type.equals(Axis.VALUE)){ double vskips = (xaxis.getMax() - xaxis.getMin() ) / ticks + xaxis.getMin(); for(int i = 1 ; i <= ticks ; i++){ drawString(g, x + skips * i, y2, getValueLabel(vskips * i + xaxis.getMin(), xaxis.getLabelFormat())); } }else if(type.equals(Axis.DATETIME)){ long t0 = xaxis.getStartDate().getTime() ; long tskips = ( xaxis.getEndDate().getTime() - t0 ) /ticks; Calendar c = Calendar.getInstance(); for(int i = 1 ; i <= ticks ; i++){ c.setTimeInMillis(t0 + i * tskips); drawString(g, x + skips * i, y2+10, getDateLabel(c.getTime(), xaxis.getLabelFormat())); } } //画title drawString(g, axisBorder.getLeft(), axisBorder.getTop() + height + axisBorder.getBottom() /2, xaxis.getTitle()); } /** * 画Y轴坐标 * @param axisBorder * @param axis * @param width * @param height * @param g */ private static void drawYAxis(AxisBorder axisBorder, Axis axis, int width ,int height, Graphics2D g){ //画x坐标 Point point1 = new Point(axisBorder.getLeft(), axisBorder.getTop() + height); Point point2 = new Point(axisBorder.getLeft(), axisBorder.getTop()); drawLine(point1, point2, new Color(axis.getLineColor()) , axis.getLineWidth(), g); //画刻度 int ticks = axis.getTicks(); int skips = height / ticks; int x1 = axisBorder.getLeft(); int x2 = x1 - 10 ; int y1 = axisBorder.getTop() + height ; String type = axis.getType(); //获取坐标轴类型 for(int i = 1 ; i <= ticks ; i++){ point1 = new Point(x2,y1 - skips * i); point2 = new Point(x1,y1 - skips * i); drawLine(point1, point2, new Color(axis.getLineColor()) , axis.getLineWidth(), g); } //画label if(type.equals(Axis.VALUE)){ double vskips = (axis.getMax() - axis.getMin() ) / ticks + axis.getMin(); for(int i = 1 ; i <= ticks ; i++){ drawString(g, x2 - 20 , y1 - skips * i, getValueLabel(vskips * i + axis.getMin(), axis.getLabelFormat())); } }else if(type.equals(Axis.DATETIME)){ long t0 = axis.getStartDate().getTime() ; long tskips = ( axis.getEndDate().getTime() - t0 ) /ticks; Calendar c = Calendar.getInstance(); for(int i = 1 ; i <= ticks ; i++){ c.setTimeInMillis(t0 + i * tskips); drawString(g, x2 - 20 , y1 - skips * i, getDateLabel(c.getTime(), axis.getLabelFormat())); } } //画title //画y坐标title int x = Math.min(30, axisBorder.getLeft()); int y0 = axisBorder.getTop() + height/2 + 80; //逆时针旋转180度 g.rotate(-Math.PI/2, x, y0); Font font = new Font("宋体", Font.BOLD, 16); g.setFont(font); g.drawString(axis.getTitle(),x,y0); //恢复画布，顺时针旋转180度 g.rotate(Math.PI/2,x,y0); } /** * 画线 * @param point1 * @param point2 * @param lineColor * @param lineWidth * @param g */ private static void drawLine(Point point1 , Point point2, Color lineColor, int lineWidth ,Graphics2D g){ g.setStroke(new BasicStroke(lineWidth)); g.setColor(lineColor); g.drawLine(point1.getX(), point1.getY(), point2.getX(), point2.getY()); } /** * 写字符 */ private static void drawString(Graphics2D g,int x ,int y,String str){ g.drawString(str, x, y); } /** * 获取数字型label * @param value * @param format * @return */ public static String getValueLabel(double value , String format ){ if(format == null || format.equals("")){ return value +""; } return String.format(format, value+""); } /** * 获取时间类型label * @param date * @param format * @return */ public static String getDateLabel(Date date , String format){ SimpleDateFormat sdf = new SimpleDateFormat("dd"); if(format == null || format.equals("")){ format = "dd日HH时"; } sdf.applyPattern(format); return sdf.format(date); } /** * 画border * @param border * @param width * @param height * @param g */ public static void drawBorder(AxisBorder border, int width, int height,Graphics2D g){ g.setColor(new Color(border.getBackgroundColor())); g.fillRect(0, 0, border.getLeft(), border.getTop()+height+border.getBottom()); //填充背景色 g.fillRect(border.getLeft(), 0, width+border.getRight(), border.getTop()); g.fillRect(border.getLeft(), border.getTop()+height, width+border.getRight(), border.getBottom()); g.fillRect(border.getLeft()+width, border.getTop(), border.getRight(), height); } }