java - 如何将 apache 的幻灯片形状元素转换为 SVG PATH?
问题描述
我使用 apache POI 将 (SVG path d="") 转换为形状对象。代码是:
String d = "M100.000,100.000 L-0.000,100.000 L-0.000,-0.000 L100.000,-0.000 L100.000,100.000 Z";
PathParser parser = new PathParser();
AWTPathProducer pathProducer = new AWTPathProducer();
parser.setPathHandler(pathProducer);
parser.parse(d);
XSLFFreeformShape shape = this.slide.createFreeform();
shape.setPath(new Path2D.Double(pathProducer.getShape(),getTransform(translate, rotate, scale)));
导出为 PowerPoint 后正常显示。
现在,我正在尝试执行导入功能,但我遇到了问题。
XSLFFreeformShape shape = (XSLFFreeformShape) xslfShape;
我有一个形状对象,但我不能把它变成路径。
如何获得“路径”属性“d”?
如何转换它?
请给我一些建议。
解决方案
我不相信已经有这样的事情了。但是您可以从 中获取 PathIteratorPath2D.Double
并使用该PathIterator来返回其边界的几何形状。然后应该可以将该边界几何图形转换为路径字符串。
例子:
import java.io.FileOutputStream;
import org.apache.poi.xslf.usermodel.*;
import org.apache.poi.sl.usermodel.*;
import java.awt.Rectangle;
import java.awt.geom.Path2D;
import java.awt.geom.PathIterator;
import java.awt.geom.AffineTransform;
public class CreatePPTXFreeformShape {
static String getPathString(Path2D.Double path2D) {
double[] coords = new double[6];
StringBuilder pathStringBuilder = new StringBuilder();
for (PathIterator pathIterator = path2D.getPathIterator(new AffineTransform()); !pathIterator.isDone(); pathIterator.next()) {
int type = pathIterator.currentSegment(coords);
if (type == PathIterator.SEG_MOVETO) {
pathStringBuilder.append("M");
pathStringBuilder.append(coords[0] + "," + coords[1]);
pathStringBuilder.append(" ");
} else if (type == PathIterator.SEG_LINETO) {
pathStringBuilder.append("L");
pathStringBuilder.append(coords[0] + "," + coords[1]);
pathStringBuilder.append(" ");
} else if (type == PathIterator.SEG_QUADTO) {
pathStringBuilder.append("Q");
pathStringBuilder.append(coords[0] + "," + coords[1] + "," + coords[2] + "," + coords[3]);
pathStringBuilder.append(" ");
} else if (type == PathIterator.SEG_CUBICTO) {
pathStringBuilder.append("C");
pathStringBuilder.append(coords[0] + "," + coords[1] + "," + coords[2]+ "," + coords[3] + "," + coords[4] + "," + coords[5]);
pathStringBuilder.append(" ");
} else if (type == PathIterator.SEG_CLOSE) {
pathStringBuilder.append("Z");
pathStringBuilder.append(" ");
}
}
return pathStringBuilder.toString();
}
public static void main(String[] args) throws Exception {
XMLSlideShow slideShow = new XMLSlideShow();
XSLFSlide slide = slideShow.createSlide();
Path2D.Double path2D = null;
XSLFFreeformShape shape1 = slide.createFreeform();
path2D = new Path2D.Double();
path2D.moveTo(100.000,100.000);
path2D.lineTo(-0.000,100.000);
path2D.lineTo(-0.000,-0.000);
path2D.lineTo(100.000,-0.000);
//path2D.lineTo(100.000,100.000);
path2D.closePath();
shape1.setPath(path2D);
shape1.setLineWidth(1.0);
shape1.setLineColor(java.awt.Color.BLACK);
shape1.setAnchor(new Rectangle(100, 100, 100, 100));
XSLFFreeformShape shape2 = slide.createFreeform();
path2D = new Path2D.Double();
path2D.moveTo(100.000,100.000);
path2D.curveTo(60.000,0.000, 40.000,0.000, 0.000,100.000);
path2D.closePath();
shape2.setPath(path2D);
shape2.setLineWidth(1.0);
shape2.setLineColor(java.awt.Color.BLACK);
shape2.setAnchor(new Rectangle(300, 100, 100, 100));
XSLFFreeformShape shape3 = slide.createFreeform();
path2D = new Path2D.Double();
path2D.moveTo(100.000,100.000);
path2D.quadTo(50.000,0.000, 0.000,100.000);
path2D.closePath();
shape3.setPath(path2D);
shape3.setLineWidth(1.0);
shape3.setLineColor(java.awt.Color.BLACK);
shape3.setAnchor(new Rectangle(500, 100, 100, 100));
String pathString = getPathString(shape1.getPath());
System.out.println(pathString);
pathString = getPathString(shape2.getPath());
System.out.println(pathString);
pathString = getPathString(shape3.getPath());
System.out.println(pathString);
FileOutputStream out = new FileOutputStream("CreatePPTXFreeformShape.pptx");
slideShow.write(out);
out.close();
}
}
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